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  • 1.
    Aneq Åström, Meriam
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Klinisk fysiologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Hjärt- och Medicincentrum, Fysiologiska kliniken US.
    Fluur, Christina
    Östergötlands Läns Landsting, Hjärt- och Medicincentrum, Kardiologiska kliniken US.
    Rehnberg, Malin
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet.
    Söderkvist, Peter
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Cellbiologi. Linköpings universitet, Hälsouniversitetet.
    Engvall, Jan
    Linköpings universitet, Institutionen för medicin och hälsa, Klinisk fysiologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Hjärt- och Medicincentrum, Fysiologiska kliniken US.
    Nylander, Eva
    Linköpings universitet, Institutionen för medicin och hälsa, Klinisk fysiologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Hjärt- och Medicincentrum, Fysiologiska kliniken US.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Novel plakophilin2 mutation. Three generation family with arrhythmogenic right ventricular cardiomyopathy2012Inngår i: Scandinavian Cardiovascular Journal, ISSN 1401-7431, E-ISSN 1651-2006, Vol. 46, nr 2, s. 72-75Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objectives: The autosomal dominant form of arrhythmogenic right ventricular cardiomyopathy (ARVC)has been linked to mutations in desmosomal proteins. Different studies have shown that amutation in plakophilin-2 (PKP 2) is a frequent genetic cause for ARVC. We describe a newmutation in the PKP2 gene, the genotype-phenotype variation in this mutation and its clinicalconsequences.

    Design: Individuals in a three generation family were investigated after the sudden cardiac death of a young male. Clinical evaluation, electrocardiography, echocardiography, magnetic resonance imaging, endomyocardial biopsy and genetic testing were performed.

    Results: A novel heterozygote mutation, a c.368G>A transition, located in exon 3 of the PKP2 gene was found (p.Trp123X). The phenotype was characterized by arrhythmia at an early age in some individuals, with mild abnormalities on imaging. However a relative carrying this mutation, with positive findings on endomyocardial biopsy had an otherwise normal phenotype, for 16 years, whereas a relative fulfilling the modified Task Force Criteria for ARVC turned out to be a non-carrier.

    Conclusions: This shows the variable penetrance and phenotypic expression in ARVC and highlights the need of genetic testing as well as a thorough phenotype examination as a part of the investigations in ARVC pedigrees.

  • 2.
    Cordeddu, Viviana
    et al.
    Ist Super Sanita, Italy; University of G dAnnunzio, Italy.
    Yin, Jiani C.
    University of Toronto, Canada; University of Toronto, Canada.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Region Östergötland, Diagnostikcentrum, Klinisk patologi och klinisk genetik. Linköpings universitet, Medicinska fakulteten.
    Virtanen, Carl
    University of Toronto, Canada; University of Toronto, Canada.
    Drunat, Severine
    Hop Robert Debre, France.
    Lepri, Francesca
    Bambino Gesu Pediat Hospital, Italy.
    De Luca, Alessandro
    Casa Sollievo Sofferenza Hospital, Italy.
    Rossi, Cesare
    St Orsola Marcello Malpighi Hospital, Italy.
    Ciolfi, Andrea
    Ist Super Sanita, Italy.
    Pugh, Trevor J.
    University of Toronto, Canada; University of Toronto, Canada.
    Bruselles, Alessandro
    Ist Super Sanita, Italy.
    Priest, James R.
    Stanford University, CA 94305 USA; Stanford University, CA 94305 USA.
    Pennacchio, Len A.
    University of Calif Berkeley, CA 94720 USA; US Department Energy Joint Genome Institute, CA 94598 USA.
    Lu, Zhibin
    University of Toronto, Canada; University of Toronto, Canada.
    Danesh, Arnavaz
    University of Toronto, Canada; University of Toronto, Canada.
    Quevedo, Rene
    University of Toronto, Canada; University of Toronto, Canada.
    Hamid, Alaa
    University of Toronto, Canada; University of Toronto, Canada.
    Martinelli, Simone
    Ist Super Sanita, Italy.
    Pantaleoni, Francesca
    Ist Super Sanita, Italy.
    Gnazzo, Maria
    Bambino Gesu Pediat Hospital, Italy.
    Daniele, Paola
    Casa Sollievo Sofferenza Hospital, Italy.
    Lissewski, Christina
    Otto von Guericke University, Germany.
    Bocchinfuso, Gianfranco
    University of Roma Tor Vergata, Italy.
    Stella, Lorenzo
    University of Roma Tor Vergata, Italy.
    Odent, Sylvie
    Hop SUD, France.
    Philip, Nicole
    Hop Enfants la Timone, France.
    Faivre, Laurence
    Hop Enfants, France.
    Vlckova, Marketa
    Charles University of Prague, Czech Republic; University Hospital Motol, Czech Republic.
    Seemanova, Eva
    Charles University of Prague, Czech Republic; University Hospital Motol, Czech Republic.
    Digilio, Cristina
    Bambino Gesu Pediat Hospital, Italy.
    Zenker, Martin
    Otto von Guericke University, Germany.
    Zampino, Giuseppe
    University of Cattolica Sacro Cuore, Italy.
    Verloes, Alain
    Hop Robert Debre, France.
    Dallapiccola, Bruno
    Bambino Gesu Pediat Hospital, Italy.
    Roberts, Amy E.
    Boston Childrens Hospital, MA 02115 USA; Boston Childrens Hospital, MA 02115 USA.
    Cave, Helene
    Hop Robert Debre, France; University of Paris Diderot, France.
    Gelb, Bruce D.
    Icahn School Medical Mt Sinai, NY 10029 USA; Icahn School Medical Mt Sinai, NY 10029 USA; Icahn School Medical Mt Sinai, NY 10029 USA.
    Neel, Benjamin G.
    University of Toronto, Canada; University of Toronto, Canada; NYU, NY 10016 USA.
    Tartaglia, Marco
    Ist Super Sanita, Italy; Bambino Gesu Pediat Hospital, Italy.
    Activating Mutations Affecting the Dbl Homology Domain of SOS2 Cause Noonan Syndrome2015Inngår i: Human Mutation, ISSN 1059-7794, E-ISSN 1098-1004, Vol. 36, nr 11, s. 1080-1087Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The RASopathies constitute a family of autosomal-dominant disorders whose major features include facial dysmorphism, cardiac defects, reduced postnatal growth, variable cognitive deficits, ectodermal and skeletal anomalies, and susceptibility to certain malignancies. Noonan syndrome (NS), the commonest RASopathy, is genetically heterogeneous and caused by functional dysregulation of signal transducers and regulatory proteins with roles in the RAS/extracellular signal-regulated kinase (ERK) signal transduction pathway. Mutations in known disease genes account for approximately 80% of affected individuals. Here, we report that missense mutations altering Son of Sevenless, Drosophila, homolog 2 (SOS2), which encodes a RAS guanine nucleotide exchange factor, occur in a small percentage of subjects with NS. Four missense mutations were identified in five unrelated sporadic cases and families transmitting NS. Disease-causing mutations affected three conserved residues located in the Dbl homology (DH) domain, of which two are directly involved in the intramolecular binding network maintaining SOS2 in its autoinhibited conformation. All mutations were found to promote enhanced signaling from RAS to ERK. Similar to NS-causing SOS1 mutations, the phenotype associated with SOS2 defects is characterized by normal development and growth, as well as marked ectodermal involvement. Unlike SOS1 mutations, however, those in SOS2 are restricted to the DH domain.

  • 3.
    Ferm Widlund, Kjerstin
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Laboratoriemedicinskt centrum, Klinisk patologi och klinisk genetik.
    Nordin, Karin
    Uppsala University.
    Hansson, Mats G
    Uppsala University.
    Pregnant women are satisfied with the information they receive about prenatal diagnosis, but are their decisions well informed?2009Inngår i: Acta obstetricia et gynecologica Scandinavica, ISSN 1600-0412, Vol. 88, nr 10, s. 1128-1132Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    OBJECTIVE. To survey the information about prenatal diagnosis that midwives give to pregnant women and to find out how the women experience the information. Furthermore, to evaluate the midwives' opinion about their knowledge and personal need for education. DESIGN. Descriptive cross-sectional study. SETTING. The southeast healthcare region of Sweden. METHODS. One hundred and fifty-seven midwives and 150 pregnant women were invited to reply to a confidential questionnaire in 2008. RESULTS. The reply rate was 78% for the midwives and 53% for the women. Ninety-six percentage of the midwives used < or =10 minutes to inform women about prenatal diagnosis. Seventy-two percentage always informed about the advantages and 41% about the choice to continue or terminate the pregnancy if a serious abnormality was detected. In addition, 41% considered that they had sufficient knowledge to inform about prenatal diagnosis, while 84% wanted additional education. Seventy-six percentage of the women took the decision to have prenatal diagnosis as soon as they found out that they were pregnant. A majority considered that they had been given enough time for questions and reflections. CONCLUSIONS. There was discrepancy between the amount of information, which midwives gave to pregnant women about prenatal diagnosis compared to what would be needed for a complete understanding of the relevant medical facts and the risks involved, but even so the women were satisfied with the information.

  • 4.
    Gati, Istvan
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet.
    Danielsson, Olof
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Vrethem, Magnus
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Neurologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Närsjukvården i centrala Östergötland, Neurologiska kliniken.
    Häggqvist, Bo
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Molekylär och immunologisk patologi. Linköpings universitet, Hälsouniversitetet.
    Fredriksson, Bengt-Arne
    Linköpings universitet, Institutionen för klinisk och experimentell medicin.
    Landtblom, Anne-Marie
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Neurologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Närsjukvården i centrala Östergötland, Neurologiska kliniken.
    Letter: Bent Spine Syndrome: A Phenotype of Dysferlinopathy or a Symptomatic DYSF Gene Mutation Carrier2012Inngår i: European Neurology, ISSN 0014-3022, E-ISSN 1421-9913, Vol. 67, nr 5, s. 300-302Artikkel i tidsskrift (Annet vitenskapelig)
    Abstract [en]

    n/a

  • 5.
    Gréen, Anna
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Green, Henrik
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för läkemedelsforskning. Linköpings universitet, Medicinska fakulteten. Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden; Royal Institute Technology, Sweden; Science for Life Laboratory,{ School of Biotechnology, Division of Gene Technology, Royal Institute of Technology, Stockholm, Sweden.
    Rehnberg, Malin
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Svensson, Anneli
    Linköpings universitet, Institutionen för medicin och hälsa. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Hjärt- och Medicincentrum, Kardiologiska kliniken US.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Jonasson, Jon
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Assessment of HaloPlex Amplification for Sequence Capture and Massively Parallel Sequencing of Arrhythmogenic Right Ventricular Cardiomyopathy-Associated Genes2015Inngår i: Journal of Molecular Diagnostics, ISSN 1525-1578, E-ISSN 1943-7811, Vol. 17, nr 1, s. 31-42Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The genetic basis of arrhythmogenic right ventricular cardiomyopathy (ARVC) is complex. Mutations in genes encoding components of the cardiac desmosomes have been implicated as being causally related to ARVC. Next-generation sequencing allows parallel sequencing and duplication/deletion analysis of many genes simultaneously, which is appropriate for screening of mutations in disorders with heterogeneous genetic backgrounds. We designed and validated a next-generation sequencing test panel for ARVC using HaloPlex. We used SureDesign to prepare a HaloPlex enrichment system for sequencing of DES, DSC2, DSG2, DSP, JUP, PKP2, RYR2, TGFB3, TMEM43, and TIN from patients with ARVC using a MiSeq instrument. Performance characteristics were determined by comparison with Sanger, as the gold standard, and TruSeq Custom Amplicon sequencing of DSC2, DSG2, DSP, JUP, and PKP2. All the samples were successfully sequenced after HaloPlex capture, with greater than99% of targeted nucleotides covered by greater than20x. The sequences were of high quality, although one problematic area due to a presumptive context-specific sequencing error causing motif Located in exon 1 of the DSP gene was detected. The mutations found by Sanger sequencing were also found using the HaloPlex technique. Depending on the bioinformatics pipeline, sensitivity varied from 99.3% to 100%, and specificity varied from 99.90/0 to 100%. Three variant positions found by Sanger and HaloPlex sequencing were missed by TruSeq Custom Amplicon owing to Loss of coverage.

  • 6.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Steroid converting enzymes in breast cancer2005Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Estrogens play a central role in the development of breast cancer. Most breast carcinomas are detected after menopause and despite a low degree of ovarian estrogen production and low levels of serum estrogen these tumors show a high in situ level of estrogens. Enzymes modulating local steroid availability seem to play an important role in the progression of especially estrogen receptor positive breast cancer. The 17ß-hydroxysteroid dehydrogenase (17ß-HSD) enzymes are involved in the interconversion of biologically active and inactive sex steroids and are considered to play a critical role in the in situ metabolism of estrogen.

    The aim of this thesis was to investigate the expression of 17ß-HSD type 1 and 2 in breast cancer and correlate this to prognosis, and to analyze if the gene encoding 17ßHSD type 1 exhibits altered gene copy number in breast cancer. We also wanted to examine if the protein levels of aromatase, 17ßHSD type 1 and 17ßHSD type 2 show association with the expression of COX-2 in breast tumors and whether these proteins correlate to prognosis. Real-time RT-PCR was used to detect the rnRNA levels of 17ßHSD type 1 and type 2, and immunohistochemistry to detect the protein expression. To analyze if the gene encoding 17ßHSD type 1 exhibits altered gene copy number in breast cancer we used real-time PCR and genomic DNA.

    While 17ßHSD type 1 catalyzes the conversion of estrone to the more potent estradiol, the type 2 enzyme catalyzes the opposite reaction. All tumors investigated in this study exhibited detectable rnRNA levels of 17ßHSD type 1. We found detectable rnRNA levels of 17ßHSD type 2 in the normal breast tissue, whereas many tumors lacked expression of type 2, especially among ER-positive tumors. In Paper I the expression of 17ßHSD type 2 was detectable in 14% of the tumors and in Paper III 17ßHSD type 2 mRNA was detected in 69% of the tumors. The expression of 17ßHSD type 2 seems to be lost in a subset of the breast tumors.

    In Paper II we found amplification of the gene coding for 17ßHSD type 1 in 14.5% of the cases. HSD17B1 amplification had prognostic significance, and in particular, for ER-positive patients who received tamoxifen treatment, increased gene copy number indicated a decreased breast cancer survival. There was a significant correlation between HSD17B1 gene copy number and mRNA expression level of 17ßHSD type 1, when analyzing a subgroup of the patients.

    In Paper II, among ER-positive patients, those with low expression of type 2 had a significantly higher recurrence rate compared with patients who expressed normal levels and this difference could not be seen among ER-negative patients. The prognostic significance of type 2 hold true in multivariate analysis. In Paper I, patients with late relapse in their disease more frequently had lost the mRNA expression of 17ßHSD type 2 than had matched control patients. In Paper IV, patients with ER-positive breast tumors with low protein levels of 17ßHSD type 2 had a worse prognosis, both concerning distant recurrence and breast cancer related death. In Paper I a high mRNA level of 17ßHSD type 1 predicted late relapses among breast cancer patients, however, in Paper IV a prognostic value of 17ßHSD type 1 could not be detected. In Paper III, there was no significant association between 17HSD type 1 and recurrence-free survival if the entire follow-up period was considered. However, for ER-positive patients still recurrence-free after 5 years, high levels of 17HSD type 1 was associated with a significantly higher rate of late relapse in the disease. When 17ßHSD type 1 and 2 were considered together, the expression ratio was a significant prognostic variable.

    COX-2 protein expression was significantly correlated to aromatase, 17ßHSD type 1 and 17ßHSD type 2 levels, and this suggests that COX-2 might contribute to the upregulation of steroid converting enzymes. However, any significant prognostic value of COX-2 or aromatase could not be detected.

    In summary, these results suggest that 17ß-HSD type 1 and 2 have prognostic importance in estrogen dependent breast cancer.

    Delarbeid
    1. Abnormal expression of 17β-hydroxysteroid dehydrogenases in breast cancer predicts late recurrence
    Åpne denne publikasjonen i ny fane eller vindu >>Abnormal expression of 17β-hydroxysteroid dehydrogenases in breast cancer predicts late recurrence
    2001 (engelsk)Inngår i: Cancer Research, ISSN 0008-5472, E-ISSN 1538-7445, Vol. 61, nr 23, s. 8448-8451Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    The 17β-hydroxysteroid dehydrogenase (17β-HSD) enzymes are involved in the interconversion of biologically active and inactive sex steroids and are considered to play a critical role in the in situ metabolism of estrogen, especially in estrogen-dependent breast cancer. The gene encoding 17β-HSD type 2 is located at 16q24.1-2, and earlier studies have shown that allelic loss in this region is an early and frequent event in breast cancer progression. Recurrence of hormone-dependent breast cancer frequently occurs several years after the primary treatment. The aim of this study was to investigate whether the expression of 17β-HSD types 1 and 2 differs in tumors from patients with late relapses (>5 years) compared with controls without recurrence after long-term follow-up. Using real-time reverse transcription-PCR, we found that the normal mammary gland expressed both 17β-HSD types 1 and 2, whereas the tumors frequently lacked detectable levels of type 2. Only 10% of the estrogen receptor-positive tumors expressed type 2, whereas 31% of the ERnegative tumors did so (P = 0.031). In a case-control series of 84 patients, a high level of 17β-HSD type 1 indicated increased risk to develop late relapse of breast cancer (odds ratio, 3.0; 95% confidence interval, 1.0–12.6; P = 0.041), whereas retained expression of type 2 indicated decreased risk (odds ratio, 0.25; 95% confidence interval, 0.05–1.2; P = 0.050). In multivariate analysis of the estrogen receptor-positive patients, the absence of 17β-HSD type 2 combined with a high expression of type 1 showed prognostic significance (P = 0.016) in addition to DNA aneuploidy (P = 0.0058), whereas progesterone receptor status did not (P = 0.71). These findings suggest that abnormal expression of 17β-HSD isoforms has prognostic significance in breast cancer and that altered expression of these enzymes may have importance in breast cancer progression.

    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-24885 (URN)11731426 (PubMedID)9287 (Lokal ID)9287 (Arkivnummer)9287 (OAI)
    Tilgjengelig fra: 2009-10-07 Laget: 2009-10-07 Sist oppdatert: 2017-12-13bibliografisk kontrollert
    2. Amplification of HSD17B1 and ERBB2 in primary breast cancer
    Åpne denne publikasjonen i ny fane eller vindu >>Amplification of HSD17B1 and ERBB2 in primary breast cancer
    Vise andre…
    2003 (engelsk)Inngår i: Oncogene, ISSN 0950-9232, E-ISSN 1476-5594, Vol. 22, nr 1, s. 34-40Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Estrogens play a crucial role in the development of breast cancer. Estradiol can be produced in the breast tissue in situ, and one of the enzymes involved in this process is 17β-hydroxysteriod dehydrogenase (17β-HSD) type 1 that catalyzes the interconversion of estrone (E1) to the biologically more potent estradiol (E2). The gene coding for 17β-HSD type 1 (HSD17B1) is located at 17q12-21, close to the more studied ERBB2 and BRCA1. The aim of this study was to investigate if HSD17B1 shows an altered gene copy number in breast cancer. We used real-time PCR and examined 221 postmenopausal breast tumors for amplification of HSD17B1 and ERBB2. In all, 32 tumors (14.5%) showed amplification of HSD17B1 and 21% were amplified for ERBB2. Amplification of the two genes was correlated (P = 0.00078) and in 14 tumors (44%) with amplification of HSD17B1, ERBB2 was co amplified. The patients with amplification in at least one of the genes had a significantly worse outcome than patients without (P = 0.0059). For estrogen receptor (ER)-positive patients who received adjuvant tamoxifen, amplification of HSD17B1 was related to decreased breast cancer survival (P = 0.017), whereas amplification of ERRB2 was not. Amplification of HSD17B1 might be an indicator of adverse prognosis among ER-positive patients, and possibly a mechanism for decreased benefit from tamoxifen treatment.

    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-24842 (URN)10.1038/sj.onc.1206078 (DOI)12527905 (PubMedID)9240 (Lokal ID)9240 (Arkivnummer)9240 (OAI)
    Tilgjengelig fra: 2009-10-07 Laget: 2009-10-07 Sist oppdatert: 2017-12-13bibliografisk kontrollert
    3. 17β-hydroxysteroid dehydrogenases involved in local oestrogen synthesis have prognostic significance in breast cancer
    Åpne denne publikasjonen i ny fane eller vindu >>17β-hydroxysteroid dehydrogenases involved in local oestrogen synthesis have prognostic significance in breast cancer
    2005 (engelsk)Inngår i: British Journal of Cancer, ISSN 0007-0920, E-ISSN 1532-1827, Vol. 92, nr 3, s. 547-552Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    The 17β-hydroxysteroid dehydrogenase (17HSD) enzymes are involved in the local regulation of sex steroids. The 17HSD type 1 enzyme catalyses the interconversion of the weak oestrone (E1) to the more potent oestradiol (E2), whereas 17HSD type 2 catalyses the oxidation of E2 to E1. The aim of this study was to correlate the expression of these enzymes in the tumour with the recurrence-free survival of tamoxifen-treated breast cancer patients. We used real-time reverse transcriptase PCR to investigate the mRNA expression of 17HSD types 1 and 2 in tumour samples from 230 postmenopausal patients. For the patients with oestrogen receptor (ER)-positive breast cancer, we found a statistically significant positive correlation between recurrence-free survival and expression of 17HSD type 2 (P = 0.026). We examined the ratio of 17HSD types 2 and 1, and ER-positive patients with low ratios showed a significantly higher rate of recurrence than those with higher ratios (P = 0.0047), ER positive patients with high expression levels of 17HSD type 1 had a significantly higher risk for late relapse (P = 0.0051). The expression of 17HSD types 1 and 2 in breast cancer differs from the expression of these enzymes in normal mammary gland, and this study indicates that the expression has prognostic significance in breast cancer.

    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-24442 (URN)10.1038/sj.bjc.6602375 (DOI)6550 (Lokal ID)6550 (Arkivnummer)6550 (OAI)
    Tilgjengelig fra: 2009-10-07 Laget: 2009-10-07 Sist oppdatert: 2017-12-13bibliografisk kontrollert
    4. Expression of COX-2 and steroid converting enzymes in breast cancer
    Åpne denne publikasjonen i ny fane eller vindu >>Expression of COX-2 and steroid converting enzymes in breast cancer
    Vise andre…
    2006 (engelsk)Inngår i: Oncology Reports, ISSN 1021-335X, E-ISSN 1791-2431, Vol. 16, nr 2, s. 219-224Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    COX-2 is upregulated in many breast tumors, and one of the products of COX-2 is PGE2 that is suggested to upregulate aromatase through cAMP signaling in breast cancer. Although aromatase can increase the estrogen levels in tumors, 17β-hydroxysteroid dehydrogenase (17HSD) activity is finally needed for the estrone/estradiol regulation. The aim of this study was to investigate if the protein expression of enzymes involved in estrogen synthesis shows covariation with the expression of COX-2. We also wanted to correlate these results with prognosis. We analyzed the expression of COX-2, aromatase, 17HSD1 and 17HSD2 with immunohistochemistry using tissue microarrays composed of 356 primary breast tumors. In the present study COX-2 was correlated to aromatase (P<0.00001), 17HSD1 (P=0.0073), and 17HSD2 (P<0.00001). Patients with ER positive tumors expressing low amounts of 17HSD2 had decreased breast cancer survival (P=0.013). Elevated expression of COX-2 and aromatase was more frequent among larger tumors (P=0.017 and P=0.013). COX-2 expression correlates with the levels of the examined steroid converting enzymes and may contribute to increased estrogen levels in the tumor. In breast cancer cells, the regulatory function of 17HSD2 could be lost, and in the present study patients with low or non-detectable levels of 17HSD2 had worse prognosis than had breast cancer patients with higher levels of the enzyme.

    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-35971 (URN)16820896 (PubMedID)29152 (Lokal ID)29152 (Arkivnummer)29152 (OAI)
    Tilgjengelig fra: 2009-10-10 Laget: 2009-10-10 Sist oppdatert: 2018-03-23bibliografisk kontrollert
  • 7.
    Gunnarsson, Cecilia
    et al.
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Ahnström, Marie
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Kirschner, Kristina
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Kirurgi. Linköpings universitet, Hälsouniversitetet.
    Olsson, Birgit
    Department of Oncology, Huddinge University Hospital, Stockholm, Sweden.
    Nordenskjöld, Bo
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Rutqvist, Lars Erik
    Department of Oncology, Huddinge University Hospital, Stockholm, Sweden.
    Skoog, Lambert
    Division of Cytology, Karolinska Hospital, Stockholm, Sweden.
    Stål, Olle
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Amplification of HSD17B1 and ERBB2 in primary breast cancer2003Inngår i: Oncogene, ISSN 0950-9232, E-ISSN 1476-5594, Vol. 22, nr 1, s. 34-40Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Estrogens play a crucial role in the development of breast cancer. Estradiol can be produced in the breast tissue in situ, and one of the enzymes involved in this process is 17β-hydroxysteriod dehydrogenase (17β-HSD) type 1 that catalyzes the interconversion of estrone (E1) to the biologically more potent estradiol (E2). The gene coding for 17β-HSD type 1 (HSD17B1) is located at 17q12-21, close to the more studied ERBB2 and BRCA1. The aim of this study was to investigate if HSD17B1 shows an altered gene copy number in breast cancer. We used real-time PCR and examined 221 postmenopausal breast tumors for amplification of HSD17B1 and ERBB2. In all, 32 tumors (14.5%) showed amplification of HSD17B1 and 21% were amplified for ERBB2. Amplification of the two genes was correlated (P = 0.00078) and in 14 tumors (44%) with amplification of HSD17B1, ERBB2 was co amplified. The patients with amplification in at least one of the genes had a significantly worse outcome than patients without (P = 0.0059). For estrogen receptor (ER)-positive patients who received adjuvant tamoxifen, amplification of HSD17B1 was related to decreased breast cancer survival (P = 0.017), whereas amplification of ERRB2 was not. Amplification of HSD17B1 might be an indicator of adverse prognosis among ER-positive patients, and possibly a mechanism for decreased benefit from tamoxifen treatment.

  • 8.
    Gunnarsson, Cecilia
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Laboratoriemedicinskt centrum, Klinisk patologi och klinisk genetik.
    Foyn Bruhn, Cathrine
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Pediatrik. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Barn- och kvinnocentrum, Barn- och ungdomskliniken i Linköping.
    Molecular Characterization and Clinical Features of a Patient With an Interstitial Deletion of 3p25.3-p26.12010Inngår i: AMERICAN JOURNAL OF MEDICAL GENETICS PART A, ISSN 1552-4825, Vol. 152A, nr 12, s. 3110-3114Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Distal chromosome 3p deletions (3p- syndrome) are associated with various developmental defects. The majority of cases have a terminal deletion of the short arm of chromosome 3 with loss of either the maternal or the paternal copy. A girl with an interstitial molecularly characterized 1.6 Mb deletion in cytoband 3p25.3-26.1 of the paternal chromosome 3 is presented. To our knowledge, she possesses the smallest deletion that has ever been reported for a patient with a clinical phenotype in accordance with the 3p- syndrome. The boundaries of the deletion lies within nearly all previously reported terminal deletions causing this syndrome. Selected genes that are present in the hemizygous state and which might be important for the phenotype of this patient as regards the congenital heart defect, autistic behavior and mental retardation (CAV3, OXTR, and SRGAP3/MEGAP, respectively) are discussed in context of the clinical features.

  • 9.
    Gunnarsson, Cecilia
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Laboratoriemedicinskt centrum, Klinisk patologi och klinisk genetik.
    Graffmann, Barbara
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Barn- och kvinnocentrum, Barn- och ungdomskliniken i Linköping.
    Jonasson, Jon
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Laboratoriemedicinskt centrum, Klinisk patologi och klinisk genetik.
    Chromosome r(10)(p15.3q26.12) in a newborn child: case report.2009Inngår i: Molecular Cytogenetics, ISSN 1755-8166, Vol. 2, s. 25-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    ABSTRACT: BACKGROUND: Ring chromosome 10 is a rare cytogenetic finding. Of the less than 10 reported cases we have found in the literature, none was characterized using high-resolution microarray analysis. Ring chromosomes are frequently unstable due to sister chromatid exchanges and mitotic failures. When mosaicism is present, the interpretation of genotype-phenotype correlations becomes extremely difficult. RESULTS: We report on a newborn girl with growth retardation, microcephaly, congenital heart defects, dysmorphic features and psychomotor retardation. Karyotyping revealed a non-mosaic apparently stable ring chromosome 10 replacing one of the normal homologues in all analyzed metaphases. High-resolution oligonucleotide microarray analysis showed a de novo approximately 12.5 Mb terminal deletion 10q26.12 -> qter and a corresponding 285 kb terminal deletion of 10pter -> p15.3. CONCLUSION: This case demonstrates that an increased nuchal translucency thickness detected by early ultrasonography should preferably lead to not only QF-PCR for the diagnosis of Down syndrome but also karyotyping. In the future, microarray analysis, which needs further evaluation, might become the method of choice. The clinical phenotype of our patient was in agreement with that of patients with a terminal 10q deletion. For the purpose of genotype-phenotype analysis, there seems to be no need for a "ring syndrome" concept.

  • 10.
    Gunnarsson, Cecilia
    et al.
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Hellqvist, Eva
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Stål, Olle
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    17β-hydroxysteroid dehydrogenases involved in local oestrogen synthesis have prognostic significance in breast cancer2005Inngår i: British Journal of Cancer, ISSN 0007-0920, E-ISSN 1532-1827, Vol. 92, nr 3, s. 547-552Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The 17β-hydroxysteroid dehydrogenase (17HSD) enzymes are involved in the local regulation of sex steroids. The 17HSD type 1 enzyme catalyses the interconversion of the weak oestrone (E1) to the more potent oestradiol (E2), whereas 17HSD type 2 catalyses the oxidation of E2 to E1. The aim of this study was to correlate the expression of these enzymes in the tumour with the recurrence-free survival of tamoxifen-treated breast cancer patients. We used real-time reverse transcriptase PCR to investigate the mRNA expression of 17HSD types 1 and 2 in tumour samples from 230 postmenopausal patients. For the patients with oestrogen receptor (ER)-positive breast cancer, we found a statistically significant positive correlation between recurrence-free survival and expression of 17HSD type 2 (P = 0.026). We examined the ratio of 17HSD types 2 and 1, and ER-positive patients with low ratios showed a significantly higher rate of recurrence than those with higher ratios (P = 0.0047), ER positive patients with high expression levels of 17HSD type 1 had a significantly higher risk for late relapse (P = 0.0051). The expression of 17HSD types 1 and 2 in breast cancer differs from the expression of these enzymes in normal mammary gland, and this study indicates that the expression has prognostic significance in breast cancer.

  • 11.
    Gunnarsson, Cecilia
    et al.
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Jansson, Agneta
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Holmlund, Birgitta
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Ferraud, Lilianne
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Nordenskjöld, Bo
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Rutqvist, Lars Erik
    Clinic of Oncology, Karolinska University Hospital, Stockholm, Sweden.
    Skoog, Lambert
    Division of Cytology, Karolinska University Hospital, Stockholm, Sweden.
    Stål, Olle
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Expression of COX-2 and steroid converting enzymes in breast cancer2006Inngår i: Oncology Reports, ISSN 1021-335X, E-ISSN 1791-2431, Vol. 16, nr 2, s. 219-224Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    COX-2 is upregulated in many breast tumors, and one of the products of COX-2 is PGE2 that is suggested to upregulate aromatase through cAMP signaling in breast cancer. Although aromatase can increase the estrogen levels in tumors, 17β-hydroxysteroid dehydrogenase (17HSD) activity is finally needed for the estrone/estradiol regulation. The aim of this study was to investigate if the protein expression of enzymes involved in estrogen synthesis shows covariation with the expression of COX-2. We also wanted to correlate these results with prognosis. We analyzed the expression of COX-2, aromatase, 17HSD1 and 17HSD2 with immunohistochemistry using tissue microarrays composed of 356 primary breast tumors. In the present study COX-2 was correlated to aromatase (P<0.00001), 17HSD1 (P=0.0073), and 17HSD2 (P<0.00001). Patients with ER positive tumors expressing low amounts of 17HSD2 had decreased breast cancer survival (P=0.013). Elevated expression of COX-2 and aromatase was more frequent among larger tumors (P=0.017 and P=0.013). COX-2 expression correlates with the levels of the examined steroid converting enzymes and may contribute to increased estrogen levels in the tumor. In breast cancer cells, the regulatory function of 17HSD2 could be lost, and in the present study patients with low or non-detectable levels of 17HSD2 had worse prognosis than had breast cancer patients with higher levels of the enzyme.

  • 12.
    Gunnarsson, Cecilia
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Jerevall, Piiha-Lotta
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Hammar, Karl
    Linköpings universitet, Institutionen för datavetenskap. Linköpings universitet, Tekniska högskolan.
    Olsson, Birgit
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Nordenskjöld, Bo
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Östergötlands Läns Landsting, Kirurgi- och onkologicentrum, Onkologiska kliniken US.
    Jansson, Agneta
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi.
    Stål, Olle
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Östergötlands Läns Landsting, Kirurgi- och onkologicentrum, Onkologiska kliniken US.
    Amplification of HSD17B1 has prognostic significance in postmenopausal breast cancer2008Inngår i: Breast Cancer Research and Treatment, ISSN 0167-6806, E-ISSN 1573-7217, Vol. 108, nr 1, s. 35-41Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In situ synthesis of estrogens is believed to be of great importance for the progression of breast cancer. In postmenopausal women most estrogens are synthesized in peripheral hormone-target tissues from circulating precursor steroids, by the enzymes involved in formation of active estrogens. One of the enzymes involved in this process is 17β-hydroxysteroid dehydrogenase (17β-HSD) type 1. This enzyme catalyzes the interconversion of estrone (E1) to the biologically more potent estradiol (E2). The gene coding for 17β-HSD type 1 (HSD17B1) is located at 17q12-21. The aim of this study was to investigate altered gene copy number of HSD17B1 in breast cancer. We used real-time PCR and examined 387 postmenopausal breast tumors for amplification of HSD17B1, and if an increased mRNA level of this enzyme is associated with amplification of the gene. We also investigated whether amplification of HSD17B1 has a prognostic value. There was a significant correlation between gene copy number of HSD17B1 and mRNA expression level (P = 0.00002). ER-positive patients with amplification of HSD17B1 showed lower breast cancer survival than patients without amplification (P = 0.025). Among ER-negative patients there was no significant correlation between increased gene copy number of HSD17B1 and prognosis. Furthermore, we found that amplification of the gene had prognostic significance in multivariate analysis adjusting for other clinicopathological variables. © 2007 Springer Science+Business Media, LLC.

  • 13.
    Gunnarsson, Cecilia
    et al.
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Olsson, Birgit
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Stål, Olle
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Arnesson, Lars-Gunnar
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Abnormal expression of 17β-hydroxysteroid dehydrogenases in breast cancer predicts late recurrence2001Inngår i: Cancer Research, ISSN 0008-5472, E-ISSN 1538-7445, Vol. 61, nr 23, s. 8448-8451Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The 17β-hydroxysteroid dehydrogenase (17β-HSD) enzymes are involved in the interconversion of biologically active and inactive sex steroids and are considered to play a critical role in the in situ metabolism of estrogen, especially in estrogen-dependent breast cancer. The gene encoding 17β-HSD type 2 is located at 16q24.1-2, and earlier studies have shown that allelic loss in this region is an early and frequent event in breast cancer progression. Recurrence of hormone-dependent breast cancer frequently occurs several years after the primary treatment. The aim of this study was to investigate whether the expression of 17β-HSD types 1 and 2 differs in tumors from patients with late relapses (>5 years) compared with controls without recurrence after long-term follow-up. Using real-time reverse transcription-PCR, we found that the normal mammary gland expressed both 17β-HSD types 1 and 2, whereas the tumors frequently lacked detectable levels of type 2. Only 10% of the estrogen receptor-positive tumors expressed type 2, whereas 31% of the ERnegative tumors did so (P = 0.031). In a case-control series of 84 patients, a high level of 17β-HSD type 1 indicated increased risk to develop late relapse of breast cancer (odds ratio, 3.0; 95% confidence interval, 1.0–12.6; P = 0.041), whereas retained expression of type 2 indicated decreased risk (odds ratio, 0.25; 95% confidence interval, 0.05–1.2; P = 0.050). In multivariate analysis of the estrogen receptor-positive patients, the absence of 17β-HSD type 2 combined with a high expression of type 1 showed prognostic significance (P = 0.016) in addition to DNA aneuploidy (P = 0.0058), whereas progesterone receptor status did not (P = 0.71). These findings suggest that abnormal expression of 17β-HSD isoforms has prognostic significance in breast cancer and that altered expression of these enzymes may have importance in breast cancer progression.

  • 14.
    Jansson, Agneta
    et al.
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Carlsson, Jonas
    Linköpings universitet, Institutionen för fysik, kemi och biologi, Bioinformatik. Linköpings universitet, Tekniska högskolan.
    Olsson, Anette
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Storm, Petter
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Margolin, Sara
    Department of Oncology, Karolinska University Hospital/ Södersjukhuset, Stockholm, Sweden.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Medicinsk genetik. Linköpings universitet, Hälsouniversitetet.
    Stenmark Askmalm, Marie
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Lindblom, Annika
    Department of Molecular Medicine, Karolinska Institute, Stockholm, Sweden.
    Persson, Bengt
    Linköpings universitet, Institutionen för fysik, kemi och biologi, Bioinformatik. Linköpings universitet, Tekniska högskolan.
    Stål, Olle
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    A new polymorphism in the coding region of exon four in HSD17B2 in relation to risk of sporadic and hereditary breast cancer2007Inngår i: Breast Cancer Research and Treatment, ISSN 0167-6806, E-ISSN 1573-7217, Vol. 106, nr 1, s. 57-64Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In situ synthesis of oestrogens is of great importance in the development and progression of breast cancer. 17β-hydroxysteroid dehydrogenase (17HSD) type 2 catalyses oxidation from oestradiol to oestrone, and thereby protects the breast epithelial cells from oestradiol. Low expression of 17HSD type 2 has been associated with decreased survival in breast cancer, but no studies have investigated the mechanism behind the low expression. The 17HSD type 2 gene (HSD17B2) was screened for mutations with Single Stranded Conformation Polymorphism (SSCP)-DNA sequencing in 59 sporadic breast cancer cases, 19 hereditary breast cancer cases and seven breast cancer cell lines. DNA samples from 226 healthy individuals were used to identify if changes were previously unknown polymorphisms. No mutation was detected and therefore mutations in HSD17B2 do not explain why some breast tumours exhibit low 17HSD type 2 expression. However, a previously unknown polymorphism was found in exon four (Met226Val). Using molecular modelling, we found that the substituted residue is located at the outer part of the steroid binding site, probably causing minor alterations in the substrate binding. We further studied if the polymorphism contributes to breast cancer susceptibility in a larger material, but did not find an increased risk in the group of 317 sporadic breast cancer patients, 188 breast cancer patients with two close relatives with breast cancer or 122 hereditary breast cancer patients, compared to the healthy control group. We suggest that the detected polymorphism does not contribute to a higher risk of developing breast cancer.

  • 15.
    Jansson, Agneta
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Delander, Lovisa
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet.
    Fornander, Tommy
    Karolinska University Hospital.
    Skoog, Lambert
    Karolinska University Hospital.
    Nordenskjöld, Bo
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Kirurgi- och onkologicentrum, Onkologiska kliniken US.
    Stål, Olle
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Kirurgi- och onkologicentrum, Onkologiska kliniken US.
    Ratio of 17HSD1 to 17HSD2 protein expression predicts the outcome of tamoxifen treatment in postmenopausal breast cancer patients.2009Inngår i: Clinical Cancer Research, ISSN 1078-0432, E-ISSN 1557-3265, Vol. 15, nr 10, s. 3610-3616Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    PURPOSE: Estrogens have great significance in the development of breast cancer. After menopause, most estrogen biosynthesis is done in peripheral tissue, and the main enzymes involved in balancing the amount of estrone against estradiol are 17beta-hydroxysteroid dehydrogenases (17HSD). The aim of this study was to investigate the prognostic and tamoxifen predictive values of 17HSD1 and 17HSD2 expression. EXPERIMENTAL DESIGN: Tumors from low-risk breast cancer patients randomized to adjuvant tamoxifen therapy or no adjuvant treatment were analyzed with immunohistochemistry to investigate protein expression of 17HSD1 and 17HSD2 in 912 cases. All patients had lymph node-negative breast cancer and were postmenopausal at the time of diagnosis. RESULTS: Low 17HSD1 expression was associated with significant benefit from tamoxifen treatment among patients with estrogen receptor (ER)-positive tumors (P < 0.001). For patients with a 17HSD1 score not exceeding that of 17HSD2, tamoxifen increased the rate of distant recurrence-free survival (hazard ratio, 0.37; 95% confidence interval, 0.23-0.60) and breast cancer-specific survival (hazard ratio, 0.30; 95% confidence interval, 0.16-0.54), whereas no apparent effect was observed when the 17HSD1 score was higher than that of 17HSD2. The interaction was significant for both distant recurrence-free survival (P = 0.036) and breast cancer-specific survival (P = 0.014). In the cohort of systemically untreated patients, no prognostic importance was observed. CONCLUSIONS: This is the first report that clearly distinguishes between the prognostic and predictive importance of 17HSD1 and 17HSD2 in ER-positive breast cancer treated with or without tamoxifen. Our data suggest that the 17HSD1/17HSD2 ratio might be useful as a predictive factor for tamoxifen treatment in ER-positive breast cancer patients.

  • 16.
    Jansson, Agneta
    et al.
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Gunnarsson, Cecilia
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Östergötlands Läns Landsting, Kirurgi- och onkologicentrum, Kirurgiska kliniken i Östergötland med verksamhet i Linköping, Norrköping och Motala.
    Cohen, Maja
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Sivik, Tove
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Stål, Olle
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Östergötlands Läns Landsting, Kirurgi- och onkologicentrum, Onkologiska kliniken US.
    17β-hydroxysteroid dehydrogenase 14 affects estradiol levels in breast cancer cells and is a prognostic marker in estrogen receptor-positive breast cancer2006Inngår i: Cancer Research, ISSN 0008-5472, E-ISSN 1538-7445, Vol. 66, nr 23, s. 11471-11477Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Estrogens have an important role in the progression of breast cancer. The 17β-hydroxysteroid dehydrogenase (17HSD) family has been identified to be of significance in hormone-dependent tissues. 17HSD1 and 17HSD2 are the main 17HSD enzymes involved in breast cancer investigated this far, but it is possible that other hormone-regulating enzymes have a similar role. 17HSD5 and 17HSD12 are associated with sex steroid metabolism, and 17HSD14 is a newly discovered enzyme that may be involved in the estrogen balance. The mRNA expression of 17HSD5, 17HSD12, and 17HSD14 were analyzed in 131 breast cancer specimens by semiquantitative real-time PCR. The results were compared with recurrence-free survival and breast cancer-specific survival of the patients. The breast cancer cell lines MCF7, SKBR3, and ZR75-1 were transiently transfected with 17HSD14 to investigate any possible effect on estradiol levels. We found that high 17HSD5 was related to significantly higher risk of late relapse in estrogen receptor (ER)-positive patients remaining recurrence-free later than 5 years after diagnosis (P = 0.02). No relation to 17HSD12 expression was found, indicating that 17HSD12 is of minor importance in breast cancer. Patients with ER-positive tumors with high expression levels of 17HSD14 showed a significantly better prognosis about recurrence-free survival (P = 0.008) as well as breast cancer-specific survival (P = 0.01), confirmed by multivariate analysis (P = 0.04). Transfection of 17HSD14 in the human breast cancer cells MCF7 and SKBR3 significantly decreased the levels of estradiol, presenting an effect of high expression levels of the enzyme. ©2006 American Association for Cancer Research.

  • 17.
    Jansson, Agneta
    et al.
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Stål, Olle
    Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Proliferative responses to altered 17β-hydroxysteroid dehydrogenase (17HSD) type 2 expression in human breast cancer cells are dependent on endogenous expression of 17HSD type 1 and the oestradiol receptors2006Inngår i: Endocrine-Related Cancer, ISSN 1351-0088, E-ISSN 1479-6821, Vol. 13, nr 3, s. 875-884Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The primary source of oestrogen in premenopausal women is the ovary but, after menopause, oestrogen biosynthesis in peripheral tissue is the exclusive site of formation. An enzyme group that affects the availability of active oestrogens is the 17β-hydroxysteroid dehydrogenase (17HSD) family. In breast cancer, 17HSD type 1 and type 2 have been mostly investigated and seem to be the principal 17HSD enzymes involved thus far. The question whether 17HSD type 1 or type 2 is of greatest importance in breast tumour development is still not clear. The aim of this study was to investigate how the loss of 17HSD type 2 expression, using siRNA in the non-tumour breast epithelial cells HMEC (human mammal epithelial cells) and MCF10A, and gain of 17HSD type 2 expression, using transient transfection in the breast cancer derived cell lines MCF7 and T47D, affect oestradiol conversion and proliferation rate measured as S-phase fraction. We further investigated how this was related to the endogenous expression of 17HSD type 1 and oestradiol receptors in the examined cell lines. The oestradiol level in the medium changed significantly in the MCF7 transfected cells and the siRNA-treated HMEC cells, but not in T47D or MCF10A. The S-phase fraction decreased in the 17HSD type 2-transfected MCF7 cells and the siRNA-treated HMEC cells. The results seemed to be dependent on the endogenous expression of 17HSD type 1 and the oestradiol receptors. In conclusion, we found that high or low levels of 17HSD type 2 affected the oestradiol concentration significantly. However, the response was dependent on the endogenous expression of 17HSD type 1. Expression of 17HSD type 1 seems to be dominant to 17HSD type 2. Therefore, it may be important to investigate a ratio between 17HSD type 1 and 17HSD type 2.

  • 18.
    Lindgren, Richard
    et al.
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för molekylär och klinisk medicin, Obstetrik och gynekologi.
    Gunnarsson, Cecilia
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för molekylär och klinisk medicin, Obstetrik och gynekologi.
    Jakobsson, Anna
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för molekylär och klinisk medicin, Obstetrik och gynekologi.
    Hammar, Mats
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för molekylär och klinisk medicin, Obstetrik och gynekologi. Östergötlands Läns Landsting, Kirurgi- och onkologicentrum, Kirurgiska kliniken i Östergötland med verksamhet i Linköping, Norrköping och Motala.
    Hypersecretion of ovarian androgens may be gonadotrophin dependent many years after menopause2000Inngår i: Maturitas, ISSN 0378-5122, E-ISSN 1873-4111, Vol. 34, nr 1, s. 43-46Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: In fertile women both adrenals and ovaries contribute to androgen production, whereas after the menopause the ovarian contribution normally decreases. Objective: The objective of this case study was to assess whether ovarian androgen secretion was responsive to decreased gonadotrophin stimulation and whether gonadotrophins were sensitive to negative feedback from sex steroids many years after the menopause. Methods: In this uncontrolled case study a 72 years old slightly overweight woman with noninsulin-dependent diabetes mellitus presented with hirsuitism and elevated serum testosterone concentrations. The woman was reluctant to have an oophorectomy, and received an oral estradiol/progestagene preparation. Serum testosterone and gonadotrophin concentrations were measured before and after steroid hormone therapy. Results: Serum gonadotrophin concentrations decreased and testosterone levels returned to normal during therapy. When the hormone therapy was stopped for 1 month the high testosterone concentrations returned, but were again normalized when the hormone therapy was reinitiated. Conclusion: The ovaries of this woman were apparently still responsive to pituitary stimulation and her hypothalamic-pituitary-ovarian feed-back system still seemed to be working after 70 years of age.

  • 19.
    Olsson, Hans
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Molekylär och immunologisk patologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Jansson, Agneta
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Holmlund, Birgitta
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Medicinsk genetik. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Methods for evaluating HER2 status in breast cancer: comparison of IHC, FISH, and real-time PCR analysis of formalin-fixed paraffin-embedded tissue2013Inngår i: Pathology and Laboratory Medicine International, ISSN 1179-2698, Vol. 5, s. 31-37Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The human epidermal growth factor receptor 2 gene (HER2) is amplified in approximately 15%–20% of all breast cancers. This results in overexpression of the HER2 protein, which is associated with worse clinical outcomes in breast cancer patients. Several studies have shown that trastuzumab, a monoclonal antibody that interferes with the HER2/neu receptor, can improve overall survival in patients with HER2-positive breast cancer. Immunohistochemistry (IHC), combined with different methods for in situ hybridization, is currently used for routine assessment of HER2 status. The aim of the present study was to determine whether real-time polymerase chain reaction (PCR) can serve as a supplementary method for evaluation of HER2 status in primary breast cancer. For this purpose, 145 formalin-fixed paraffin-embedded primary breast cancer samples were tested by real-time PCR amplification of HER2, using amyloid precursor protein as a reference. The results were compared with HER2 status determined by fluorescence in situ hybridization (FISH) and IHC. The specificity, sensitivity, and reproducibility of real-time PCR were evaluated, and a comparison of formalin-fixed and fresh-frozen samples was performed. This showed concordance of 93% between real-time PCR and FISH, and 86% between real-time PCR and IHC. Therefore, we suggest that real-time PCR can be a useful supplementary method for assessment of HER2 status.

  • 20.
    Palfi, Miodrag
    et al.
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för molekylär och klinisk medicin, Transfusionsmedicin. Östergötlands Läns Landsting, Laboratoriemedicinskt centrum, Klinisk immunologi och transfusionsmedicin.
    Gunnarsson, Cecilia
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin. Östergötlands Läns Landsting, Laboratoriemedicinskt centrum, Klinisk patologi och klinisk genetik.
    The frequency of anti-C + anti-G in the absence of anti-D in alloimmunized pregnancies2001Inngår i: Transfusion Medicine, ISSN 0958-7578, E-ISSN 1365-3148, Vol. 11, nr 3, s. 207-210Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Anti-D+C are often initially identified in sera from alloimmunized women. Anti-G may be present in these samples, mimicking anti-D+C, and therefore the differentiation of anti-D, -C and -G may be important. Sera from 27 alloimmunized women, initially identified as containing anti-D + anti-C, were analysed by adsorption/elution studies in the presence of polyethylene glycol (PEG) using R0r (D+C-G+) and r'r(D-C+G+) red blood cells (RBC). Additionally, 15/27 samples were tested by adsorption in the presence of PEG and subsequently warm elution, using rGr (D-C-G+) RBC. Anti-G + anti-C, without anti-D, were identified in 4/27 samples (14.8%) and none of the newborn children needed postpartum treatment. The combination of D+G, D+C and D+C+G antibodies occurred in 25.9%, 11.1% and 48.1% of the women, respectively. Overall, anti-G was detected in 24/27 samples (88.9%). Pregnant women shown to have anti-G+C but not anti-D should receive Rh immune globulin. Additionally, the finding of apparent anti-D+C during pregnancy in D-negative spouses may lead to paternity testing and therefore a correct antibody identification is necessary.

  • 21.
    Rehnberg, Malin
    et al.
    Östergötlands Läns Landsting, Laboratoriemedicinskt centrum, Klinisk patologi och klinisk genetik. Linköpings universitet, Hälsouniversitetet.
    Jonasson, Jon
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Molekylär och immunologisk patologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Laboratoriemedicinskt centrum, Klinisk patologi och klinisk genetik.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Laboratoriemedicinskt centrum, Klinisk patologi och klinisk genetik.
    Letter: Novel L1CAM Splice Site Mutation in a Young Male With L1 Syndrome2011Inngår i: American Journal of Medical Genetics. Part A, ISSN 1552-4825, E-ISSN 1552-4833, Vol. 155A, nr 2, s. 439-441Artikkel i tidsskrift (Annet vitenskapelig)
    Abstract [en]

    n/a

  • 22.
    Shabo, Ivan
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för kliniska vetenskaper. Region Östergötland, Centrum för kirurgi, ortopedi och cancervård, Kirurgiska kliniken US. Linköpings universitet, Medicinska fakulteten. Karolinska Institute, Sweden; Karolinska University Hospital, Sweden.
    Midtbö, Kristine Maria
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten.
    Andersson, Henrik
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten.
    Åkerlund, Emma
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten.
    Olsson, Hans
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Wegman, Pia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Region Östergötland, Diagnostikcentrum, Klinisk patologi och klinisk genetik. Linköpings universitet, Medicinska fakulteten.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Region Östergötland, Diagnostikcentrum, Klinisk patologi och klinisk genetik. Linköpings universitet, Medicinska fakulteten.
    Lindström, Annelie
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten.
    Macrophage traits in cancer cells are induced by macrophage-cancer cell fusion and cannot be explained by cellular interaction2015Inngår i: BMC Cancer, ISSN 1471-2407, E-ISSN 1471-2407, Vol. 15, nr 1, s. 922-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: Cell fusion is a natural process in normal development and tissue regeneration. Fusion between cancer cells and macrophages generates metastatic hybrids with genetic and phenotypic characteristics from both maternal cells. However, there are no clinical markers for detecting cell fusion in clinical context. Macrophage-specific antigen CD163 expression in tumor cells is reported in breast and colorectal cancers and proposed being caused by macrophages-cancer cell fusion in tumor stroma. The purpose of this study is to examine the cell fusion process as a biological explanation for macrophage phenotype in breast. Methods: Monocytes, harvested from male blood donor, were activated to M2 macrophages and co-cultured in ThinCert transwell system with GFP-labeled MCF-7 cancer cells. MCF7/macrophage hybrids were generated by spontaneous cell fusion, isolated by fluorescence-activated cell sorting and confirmed by fluorescence microscopy, short tandem repeats analysis and flow cytometry. CD163 expression was evaluated in breast tumor samples material from 127 women by immunohistochemistry. Results: MCF-7/macrophage hybrids were generated spontaneously at average rate of 2 % and showed phenotypic and genetic traits from both maternal cells. CD163 expression in MCF-7 cells could not be induced by paracrine interaction with M2-activated macrophages. CD163 positive cancer cells in tumor sections grew in clonal collection and a cutoff point greater than25 % of positive cancer cells was significantly correlated to disease free and overall survival. Conclusions: In conclusion, macrophage traits in breast cancer might be caused by cell fusion rather than explained by paracrine cellular interaction. These data provide new insights into the role of cell fusion in breast cancer and contributes to the development of clinical markers to identify cell fusion.

  • 23.
    Sivik, Tove
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Gunnarsson, Cecilia
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Medicinsk genetik. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Fornander, Tommy
    Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.
    Nordenskjöld, Bo
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Onkologiska kliniken US.
    Skoog, Lambert
    Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.
    Stål, Olle
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Onkologiska kliniken US.
    Jansson, Agneta
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet.
    17β-hydroxysteroid dehydrogenase type 14 is a predictive marker for tamoxifen response in oestrogen receptor positive breast cancer2012Inngår i: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 7, nr 7, s. e40568-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Introduction: 17β-hydroxysteroid dehydrogenases (17βHSDs) are important enzymes regulating the pool of bioactive steroids in the breast. The current study was undertaken in order to evaluate implications of 17βHSD14 in breast cancer, measuring 17βHSD14 protein expression in breast tumours.

    Methods: An antibody targeting the 17βHSD14 antigen was generated and validated using HSD17B14-transfected cells and a peptide-neutralising assay. Tissue microarrays with tumours from 912 post-menopausal women diagnosed with lymph node-negative breast cancer, and randomised to adjuvant tamoxifen or no endocrine treatment, were analysed for 17βHSD14 protein expression with immunohistochemistry.

    Results: Results were obtained from 847 tumours. Patients with oestrogen positive tumours with high 17βHSD14 expression had fewer local recurrences when treated with tamoxifen (HR 0.38; 95% C.I. 0.19–0.77, p = 0.007) compared to patients with lower tumoural 17βHSD14 expression, for whom tamoxifen did not reduce the number of local recurrences (HR 1.19; 95% C.I. 0.54–2.59; p = 0.66). No prognostic importance of 17βHSD14 was seen for systemically untreated patients.

    Conclusions: Using a highly specific validated antibody for immunohistochemical analysis of a large number of breast tumours, we have shown that tumoural expression levels of 17βHSD14 can predict the outcome of adjuvant tamoxifen treatment in terms of local recurrence-free survival in patients with lymph node-negative ER+ breast cancer. The results need be verified to confirm any clinical relevance.

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