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  • 1.
    Alehagen, Urban
    et al.
    Linköping University, Department of Medical and Health Sciences, Division of Cardiovascular Medicine. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Heart and Medicine Center, Department of Cardiology in Linköping.
    Slind Olsen, Renate
    Linköping University, Department of Medical and Health Sciences, Division of Drug Research. Linköping University, Faculty of Medicine and Health Sciences. County Hospital Ryhov, Sweden.
    Länne, Toste
    Linköping University, Department of Medical and Health Sciences, Division of Cardiovascular Medicine. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Heart and Medicine Center, Department of Thoracic and Vascular Surgery.
    Matussek, Andreas
    County Hospital Ryhov, Sweden.
    Wågsäter, Dick
    Linköping University, Department of Medical and Health Sciences, Division of Drug Research. Linköping University, Faculty of Medicine and Health Sciences.
    PDGF-D gene polymorphism is associated with increased cardiovascular mortality in elderly men2016In: BMC Medical Genetics, ISSN 1471-2350, E-ISSN 1471-2350, Vol. 17, no 62Article in journal (Refereed)
    Abstract [en]

    Background: Platelet-derived growth factor (PDGF) D has been reported to be active in fibroblasts, and in areas of myocardial infarction. In this longitudinal study we evaluated the association between PDGF-D polymorphism and cardiovascular mortality, and attempted to discover whether specific genotype differences regarding risk could be observed, and if gender differences could be seen. Methods: Four hundred seventy-six elderly community participants were included in this study. All participants underwent a clinical examination, echocardiography, and blood sampling including PDGF-D single nucleotide polymorphism (SNP) analyses of the rs974819 A/A, G/A and G/G SNP. The follow-up time was 6.7 years. Results: No specific genotype of rs974819 demonstrated increased cardiovascular mortality in the total population, however, the male group with genotypes A/A and G/A demonstrated an increased risk that persisted in a multivariate evaluation where adjustments were made for well-known cardiovascular risk factors (2.7 fold compared with the G/G genotype). No corresponding finding was observed in the female group. Conclusion: We report here for the first time that the genotypes G/A or A/A of the SNP rs974819 near PDGF-D exhibited a 2.7 fold increased cardiovascular mortality risk in males. Corresponding increased risk could not be observed in either the total population and thus not in the female group. However, the sample size is was small and the results should be regarded as hypothesis-generating, and thus more research in the field is recommended.

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  • 2.
    Alehagen, Urban
    et al.
    Linköping University, Department of Medical and Health Sciences, Division of Cardiovascular Medicine. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Heart and Medicine Center, Department of Cardiology in Linköping.
    Vorkapic, Emina
    Linköping University, Department of Medical and Health Sciences, Division of Drug Research. Linköping University, Faculty of Medicine and Health Sciences.
    Ljungberg, Liza
    Linköping University, Department of Medical and Health Sciences, Division of Cardiovascular Medicine. Linköping University, Faculty of Medicine and Health Sciences.
    Länne, Toste
    Linköping University, Department of Medical and Health Sciences, Division of Cardiovascular Medicine. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Heart and Medicine Center, Department of Thoracic and Vascular Surgery.
    Wågsäter, Dick
    Linköping University, Department of Medical and Health Sciences, Division of Drug Research. Linköping University, Faculty of Medicine and Health Sciences.
    Gender difference in adiponectin associated with cardiovascular mortality2015In: BMC Medical Genetics, ISSN 1471-2350, E-ISSN 1471-2350, Vol. 16, no 9Article in journal (Refereed)
    Abstract [en]

    Background: It is important to identify cardiovascular diseases in patients at high risk. To include genetics into routine cardiological patients has therefore been discussed recently. We wanted to evaluate the association between high-molecular weight adiponectin and cardiovascular risk, and secondly in the same population evaluate if specific genotype differences regarding risk could be observed, and thirdly if gender differences could be seen. Method: Four hundred seventy-six elderly participants recruited from a rural community were included. All participants underwent a clinical examination, echocardiography, and blood sampling and the single nucleotide polymorphism (SNP) (rs266729) of adiponectin was analysed. Follow-up time was 6.7 years. Results: Those with high serum concentration of adiponectin had a more 2 fold increased cardiovascular risk, and it might be that females exhibits even higher risk where a more than 5 fold increased risk could be seen. The result could be demonstrated even in a multivariate model adjusting for well-known clinical risk factors. However, as the sample size was small the gender differences should be interpreted with caution. In the genotype evaluation the C/C carriers of the female group had a more than 9-fold increased risk of cardiovascular mortality, however the confidence interval was wide. Such genotype difference could not be found in the male group. Conclusion: High level of adiponectin was associated with increased cardiovascular risk. Also a gender difference in the genotype evaluation could be seen where the C/C carriers obtained higher risk in the female group but not in the male group. Thus, in order to identify patients at risk early, genetic analyses may add to the armamentarium used in the clinical routine. However, information should be regarded as hypothesis generating as the sample size was small and should stimulate further research in individualized cardiovascular prevention and treatment.

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  • 3.
    Elenis, Evangelia
    et al.
    Uppsala Univ, Sweden.
    Skalkidou, Alkistis
    Uppsala Univ, Sweden.
    Skoog-Svanberg, Agneta
    Uppsala Univ, Sweden.
    Sydsjö, Gunilla
    Linköping University, Department of Clinical and Experimental Medicine, Division of Children's and Women's health. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center of Paediatrics and Gynaecology and Obstetrics, Department of Gynaecology and Obstetrics in Linköping.
    Stavreus-Evers, Anneli
    Uppsala Univ, Sweden.
    Akerud, Helena
    Uppsala Univ, Sweden.
    HRG C633T polymorphism and risk of gestational hypertensive disorders: a pilot study2018In: BMC Medical Genetics, ISSN 1471-2350, E-ISSN 1471-2350, Vol. 19, article id 44Article in journal (Refereed)
    Abstract [en]

    Background: Preeclampsia and gestational hypertensive disorders are thought to occur due to endothelial cell dysfunction and abnormal placentation, triggered by angiogenesis-related factors yet undetermined. The aim of this study was to investigate whether a genetic polymorphism (SNP) of Histidine-rich glycoprotein (HRG), HRG C633T SNP, is associated with gestational hypertensive disorders. Methods: It was performed a nested case-control study from the BASIC Cohort of Uppsala University Hospital comprising 92 women diagnosed with gestational hypertensive disorders without other comorbidities and 200 women with full term uncomplicated pregnancies, all genotyped regarding HRG C633T SNP. Results: The genetic analysis of the study sample showed that C/C genotype was more prevalent among controls. The presence of the T-allele showed a tendency towards an increased risk of gestational hypertensive disorders. After clustering the study participants based on their genotype, it was observed that the odds for gestational hypertensive disorders among heterozygous C/T or homozygous T/T carriers were higher compared to homozygous C/C carriers [OR 1.72, 95% CI (1.04-2.84)]. The association remained significant even after adjustment for maternal age, BMI and parity. Conclusions: The HRG C633T genotype seems to be associated with gestational hypertensive disorders, and as part of a greater algorithm, might contribute in the future to the prediction of the individual susceptibility to the condition.

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  • 4.
    Fardell, Camilla
    et al.
    Univ Gothenburg, Sweden.
    Zettergren, Anna
    Univ Gothenburg, Sweden.
    Ran, Caroline
    Karolinska Inst, Sweden.
    Belin, Andrea Carmine
    Karolinska Inst, Sweden.
    Ekman, Agneta
    Univ Gothenburg, Sweden.
    Sydow, Olof
    Karolinska Univ Hosp, Sweden.
    Backman, Lars
    Karolinska Inst, Sweden.
    Holmberg, Bjorn
    Univ Gothenburg, Sweden.
    Dizdar Segrell, Nil
    Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Local Health Care Services in Central Östergötland, Department of Neurology.
    Söderkvist, Peter
    Linköping University, Department of Clinical and Experimental Medicine, Division of Cell Biology. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Diagnostics, Clinical genetics.
    Nissbrandt, Hans
    Univ Gothenburg, Sweden.
    S100B polymorphisms are associated with age of onset of Parkinsons disease2018In: BMC Medical Genetics, ISSN 1471-2350, E-ISSN 1471-2350, Vol. 19, article id 42Article in journal (Refereed)
    Abstract [en]

    Background: In this study we investigated the association between SNPs in the S100B gene and Parkinsons disease (PD) in two independent Swedish cohorts. The SNP rs9722 has previously been shown to be associated with higher S100B concentrations in serum and frontal cortex in humans. S100B is widely expressed in the central nervous system and has many functions such as regulating calcium homeostasis, inflammatory processes, cytoskeleton assembly/disassembly, protein phosphorylation and degradation, and cell proliferation and differentiation. Several of these functions have been suggested to be of importance for the pathophysiology of PD. Methods: The SNPs rs9722, rs2239574, rs881827, rs9984765, and rs1051169 of the S100B gene were genotyped using the KASPar (R) PCR SNP genotyping system in a case-control study of two populations (431 PD patients and 465 controls, 195 PD patients and 378 controls, respectively). The association between the genotype and allelic distributions and PD risk was evaluated using Chi-Square and Cox proportional hazards test, as well as logistic regression. Linear regression and Cox proportional hazards tests were applied to assess the effect of the rs9722 genotypes on age of disease onset. Results: The S100B SNPs tested were not associated with the risk of PD. However, in both cohorts, the T allele of rs9722 was significantly more common in early onset PD patients compared to late onset PD patients. The SNP rs9722 was significantly related to age of onset, and each T allele lowered disease onset with 4.9 years. In addition, allelic variants of rs881827, rs9984765, and rs1051169, were significantly more common in early-onset PD compared to late-onset PD in the pooled population. Conclusions: rs9722, a functional SNP in the 3-UTR of the S100B gene, was strongly associated with age of onset of PD.

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  • 5.
    von Otter, Malin
    et al.
    University of Gothenburg, Sweden.
    Bergström, Petra
    University of Gothenburg, Sweden.
    Quattrone, Aldo
    Magna Graecia University of Catanzaro, Italy; CNR, Italy.
    Valeria De Marco, Elvira
    CNR, Italy.
    Annesi, Grazia
    CNR, Italy.
    Söderkvist, Peter
    Linköping University, Department of Clinical and Experimental Medicine, Division of Cell Biology. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Diagnostics, Department of Clinical Pathology and Clinical Genetics.
    Bezzina Wettinger, Stephanie
    University of Malta, Malta.
    Drozdzik, Marek
    Pomeranian Medical University, Poland.
    Bialecka, Monika
    Pomeranian Medical University, Poland.
    Nissbrandt, Hans
    University of Gothenburg, Sweden.
    Klein, Christine
    Medical University of Lubeck, Germany.
    Nilsson, Michael
    University of Gothenburg, Sweden; University of Newcastle, Australia.
    Hammarsten, Ola
    University of Gothenburg, Sweden.
    Nilsson, Staffan
    Chalmers, Sweden.
    Zetterberg, Henrik
    University of Gothenburg, Sweden; UCL Institute Neurol, England.
    Genetic associations of Nrf2-encoding NFE2L2 variants with Parkinson s disease a multicenter study2014In: BMC Medical Genetics, ISSN 1471-2350, E-ISSN 1471-2350, Vol. 15, no 131Article in journal (Refereed)
    Abstract [en]

    Background: The transcription factor Nrf2, encoded by the NFE2L2 gene, is an important regulator of the cellular protection against oxidative stress. Parkinson s disease is a neurodegenerative disease highly associated with oxidative stress. In a previously published study, we reported associations of NFE2L2 haplotypes with risk and age at onset of idiopathic Parkinson s disease in a Swedish discovery material and a Polish replication material. Here, we have extended the replication study and performed meta-analyses including the Polish material and four new independent European patient-control materials. Furthermore, all SNPs included in the haplotype windows were investigated individually for associations with Parkinson s disease in meta-analyses including all six materials. Methods: Totally 1038 patients and 1600 control subjects were studied. Based on previous NFE2L2 haplotype associations with Parkinson s disease, five NFE2L2 tag SNPs were genotyped by allelic discrimination and three functional NFE2L2 promoter SNPs were genotyped by sequencing. The impact of individual SNPs and haplotypes on risk and age at onset of Parkinson s disease were investigated in each material individually and in meta-analyses of the obtained results. Results: Meta-analyses of NFE2L2 haplotypes showed association of haplotype GAGCAAAA, including the fully functional promoter haplotype AGC, with decreased risk (OR = 0.8 per allele, p = 0.012) and delayed onset (+ 1.1 years per allele, p = 0.048) of Parkinson s disease. These results support the previously observed protective effect of this haplotype in the first study. Further, meta-analyses of the SNPs included in the haplotypes revealed four NFE2L2 SNPs associated with age at onset of Parkinson s disease (rs7557529 G greater than A, -1.0 years per allele, p = 0.042; rs35652124 A greater than G, -1.1 years per allele, p = 0.045; rs2886161 A greater than G, -1.2 years per allele, p = 0.021; rs1806649 G greater than A, + 1.2 years per allele, p = 0.029). One of these (rs35652124) is a functional SNP located in the NFE2L2 promoter. No individual SNP was associated with risk of Parkinson s disease. Conclusion: Our results support the hypothesis that variation in the NFE2L2 gene, encoding a central protein in the cellular protection against oxidative stress, may contribute to the pathogenesis of Parkinson s disease. Functional studies are now needed to explore these results further.

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