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  • 1.
    Bourghardt Peebo, Beatrice
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Oftalmiatrik. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Ögonkliniken US/LiM.
    Fagerholm, Per
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Oftalmiatrik. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Ögonkliniken US/LiM.
    Traneus-Rockert, Catharina
    Östergötlands Läns Landsting, Diagnostikcentrum, Klinisk patologi och klinisk genetik.
    Lagali, Neil
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Oftalmiatrik. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Ögonkliniken US/LiM.
    Cellular level characterization of capillary regression in inflammatory angiogenesis using an in vivo corneal model2011Inngår i: Angiogenesis, ISSN 0969-6970, E-ISSN 1573-7209, Vol. 14, nr 3, s. 393-405Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this study, we introduce a technique for repeated, microscopic observation of single regressing capillaries in vivo in inflamed murine corneas. Natural capillary regression was initiated by removal of inflammatory stimulus during an active pro-angiogenic phase, while the additional impact of anti-angiogenic treatment with triamcinolone or bevazicumab was investigated. Capillaries regressed naturally within 1 week and treatments did not further enhance the natural regression. Morphologically, early-phase regression was characterized by significant lumen narrowing and a significant reduction in CD11b+ myeloid cell infiltration of the extracellular matrix. By 1 week, vascular remodeling occurred concomitant with CD11b+CD68+KiM2R+ mature macrophage localization on capillary walls. Empty conduits without blood flow, positive for collagen IV and devoid of vascular endothelium and pericytes, were apparent in vivo and by 3 weeks were more numerous than perfused capillaries. By 3 weeks, macrophages aggregated around remaining perfused capillaries and were observed in apposition with degrading capillary segments. Abrupt termination of capillary sprouting in our regression model further revealed vascular endothelial abandonment of sprout tips and perfused capillary loop formation within a single angiogenic sprout, possibly as an intussusceptive response to cessation of the stimulus. Finally, we observed lumen constriction and macrophage localization on capillary walls in vivo in a clinical case of corneal capillary regression that paralleled findings in our murine model.

  • 2.
    Dabrosin, Charlotta
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Östergötlands Läns Landsting, Kirurgi- och onkologicentrum, Onkologiska kliniken US.
    Sex steroid regulation of angiogenesis in breast tissue2005Inngår i: Angiogenesis, ISSN 0969-6970, E-ISSN 1573-7209, Vol. 8, nr 2, s. 127-136Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Angiogenesis is essential for normal function in the female reproductive tract and a prerequisite for growth and metastasis of solid tumors. Several factors, both inducers and inhibitors, play essential roles in the regulation of the angiogenic process. Exposure to sex steroids increases the risk of breast cancer but the mechanisms are poorly understood and the importance of angiogenesis in breast carcinogenesis is undefined. In the female reproductive tract ovarian hormones tightly regulate angiogenesis. The breast is also a target organ for sex steroids but very little is known about sex steroid effects on angiogenesis in normal breast tissue and breast cancer. In this review several regulators of angiogenesis, and their relation to sex steroids, in breast tissue are discussed. Increased knowledge in this area is of utmost importance for future therapeutic treatment options and for breast cancer prevention. © Springer 2005.

  • 3.
    Jensen, Lasse Dahl
    et al.
    Novo Nordisk A/S, Måløv, Denmark .
    Hansen, Anker J.
    Novo Nordisk A/S, Måløv, Denmark .
    Lundbaek, Jens A.
    Novo Nordisk A/S, Måløv, Denmark .
    Regulation of endothelial cell migration by amphiphiles - are changes in cell membrane physical properties involved?2007Inngår i: Angiogenesis, ISSN 0969-6970, E-ISSN 1573-7209, Vol. 10, nr 1, s. 13-22Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Endothelial cell (EC) migration is an integral part of angiogenesis and a prerequisite for malignant tumor growth. Recent studies suggest that amphiphilic compounds can regulate migration of bovine aortic ECs by altering the physical properties of the cell membrane lipid bilayers. A number of structurally different amphiphiles thus regulate the migration in quantitative correlation with their effects on the plasma membrane microviscosity. Many amphiphiles that affect EC migration and angiogenesis alter the physical properties of lipid bilayers, suggesting that such a regulatory mechanism may be of general importance. To investigate this notion, we studied the effects of lysophospholipids that inhibit migration of bovine aortic ECs and decrease cell membrane microviscosity, and of other amphiphiles that decrease membrane microviscosity (Triton X-100, octyl-beta-glucoside, arachidonic acid, docosahexaenoic acid, ETYA, capsaicin) on the migration of porcine aortic ECs. We further studied whether the enzyme secretory phospholipase A(2) (sPLA(2)) would affect migration in accordance with the changes in membrane microviscosity induced by its hydrolysis products lysophospholipids and polyunsaturated fatty acids. Arachidonic acid, at low concentrations, promoted cell migration by a mechanism involving metabolic products of this compound. Apart from this effect, all the amphiphiles, as well as sPLA(2), inhibited cell migration. A semi-quantitative analysis found a similar correlation between the effects on migration and on lipid bilayer stiffness measured using gramicidin channels as molecular force transducers. These results suggest that changes in cell membrane physical properties may generally contribute to the effects of amphiphiles on EC migration.

  • 4.
    Lennikov, Anton
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Laboratory of Biomedical Cell Technologies, School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia.
    Mirabelli, Pierfrancesco
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Ögonkliniken US/LiM.
    Mukwaya, Anthony
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten.
    Schaupper, Mira
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten.
    Thangavelu, Muthukumar
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Ögonkliniken US/LiM.
    Lachota, Mieszko
    Department of Immunology, Medical University of Warsaw, Warsaw, Poland.
    Ali, Zaheer
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för kardiovaskulär medicin. Linköpings universitet, Medicinska fakulteten.
    Jensen, Lasse
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för kardiovaskulär medicin. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Diagnostikcentrum, Klinisk farmakologi.
    Lagali, Neil
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Ögonkliniken US/LiM.
    Selective IKK2 inhibitor IMD0354 disrupts NF-kappa B signaling to suppress corneal inflammation and angiogenesis2018Inngår i: Angiogenesis, ISSN 0969-6970, E-ISSN 1573-7209, Vol. 21, nr 2, s. 267-285Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Corneal neovascularization is a sight-threatening condition caused by angiogenesis in the normally avascular cornea. Neovascularization of the cornea is often associated with an inflammatory response, thus targeting VEGF-A alone yields only a limited efficacy. The NF-kappa B signaling pathway plays important roles in inflammation and angiogenesis. Here, we study consequences of the inhibition of NF-kappa B activation through selective blockade of the IKK complex I kappa B kinase beta (IKK2) using the compound IMD0354, focusing on the effects of inflammation and pathological angiogenesis in the cornea. In vitro, IMD0354 treatment diminished HUVEC migration and tube formation without an increase in cell death and arrested rat aortic ring sprouting. In HUVEC, the IMD0354 treatment caused a dose-dependent reduction in VEGF-A expression, suppressed TNF alpha-stimulated expression of chemokines CCL2 and CXCL5, and diminished actin filament fibers and cell filopodia formation. In developing zebrafish embryos, IMD0354 treatment reduced expression of Vegf-a and disrupted retinal angiogenesis. In inflammation-induced angiogenesis in the rat cornea, systemic selective IKK2 inhibition decreased inflammatory cell invasion, suppressed CCL2, CXCL5, Cxcr2, and TNF-alpha expression and exhibited anti-angiogenic effects such as reduced limbal vessel dilation, reduced VEGF-A expression and reduced angiogenic sprouting, without noticeable toxic effect. In summary, targeting NF-kappa B by selective IKK2 inhibition dampened the inflammatory and angiogenic responses in vivo by modulating the endothelial cell expression profile and motility, thus indicating an important role of NF-kappa B signaling in the development of pathologic corneal neovascularization.

  • 5.
    Mukwaya, Anthony
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten.
    Lennikov, Anton
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten.
    Xeroudaki, Maria
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Ögonkliniken US/LiM.
    Mirabelli, Pierfrancesco
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Ögonkliniken US/LiM.
    Lachota, Mieszko
    Department of Immunology, Medical University of Warsaw, Warsaw, Poland.
    Jensen, Lasse
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för kardiovaskulär medicin. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Diagnostikcentrum, Klinisk farmakologi.
    Peebo, Beatrice
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Ögonkliniken US/LiM.
    Lagali, Neil
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Ögonkliniken US/LiM.
    Time-dependent LXR/RXR pathway modulation characterizes capillary remodeling in inflammatory corneal neovascularization2018Inngår i: Angiogenesis, ISSN 0969-6970, E-ISSN 1573-7209, Vol. 21, nr 2, s. 395-413Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Inflammation in the normally immune-privileged cornea can initiate a pathologic angiogenic response causing vision-threatening corneal neovascularization. Inflammatory pathways, however, are numerous, complex and are activated in a time-dependent manner. Effective resolution of inflammation and associated angiogenesis in the cornea requires knowledge of these pathways and their time dependence, which has, to date, remained largely unexplored. Here, using a model of endogenous resolution of inflammation-induced corneal angiogenesis, we investigate the time dependence of inflammatory genes in effecting capillary regression and the return of corneal transparency. Endogenous capillary regression was characterized by a progressive thinning and remodeling of angiogenic capillaries and inflammatory cell retreat in vivo in the rat cornea. By whole-genome longitudinal microarray analysis, early suppression of VEGF ligand-receptor signaling and inflammatory pathways preceded an unexpected later-phase preferential activation of LXR/RXR, PPAR alpha/RXR alpha and STAT3 canonical pathways, with a concurrent attenuation of LPS/IL-1 inhibition of RXR function and Wnt/beta-catenin signaling pathways. Potent downstream inflammatory cytokines such as Cxcl5, IL-1 beta, IL-6 and Ccl2 were concomitantly downregulated during the remodeling phase. Upstream regulators of the inflammatory pathways included Socs3, Sparc and ApoE. A complex and coordinated time-dependent interplay between pro- and anti-inflammatory signaling pathways highlights a potential anti-inflammatory role of LXR/RXR, PPAR alpha/RXR alpha and STAT3 signaling pathways in resolving inflammatory corneal angiogenesis.

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