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A NEW APPROACH TO STUDY PROPERTIES OF ISOLATED PREADIPOCYTES FOLLOWING IN VIVO EXPOSURE TO HYPOXIA

机译:研究体内低氧暴露后分离的单核细胞特性的新方法

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摘要

In the present study we developed a novel approach tornstudy the properties of isolated human preadipocytesrnfrom subjects exposed to conditions of hypoxiarnequivalent to an altitude of 4000 m. By using confocalrnmicroscopy we studied the expression of dipeptidylrnpeptidase 4 (DPP4) in preadipocytes from adultrnnormal-weight males. DPP4 is a transmembranernglycoprotein with enzymatic activity that cleaves Nterminalrndipeptides from a diverse range of substrates.rnThe activity of DPP4 is implicated in immune responsernas well as in glucose homeostasis. To gain insights intornthe pathophysiological role of DPP4 in insulinrnresistance we here explored DPP4 expression duringrnprolonged exposure to hypoxia, an experimental modelrnof obesity onset. We used here a rapid method tornisolate cells from biopsies and immunolabelled themrnwith antibodies. Then cells were prepared for thernanalysis with confocal microscopy. The results showrnthat a prolonged exposure to hypoxic environmentrnappears to increases the expression of DPP4 onrnpreadipocytes.
机译:在本研究中,我们开发了一种新颖的方法来研究暴露于低等当量海拔4000 m的受试者的分离的人前脂肪细胞的特性。通过共聚焦显微镜,我们研究了成年体重正常男性前脂肪细胞中二肽基肽酶4(DPP4)的表达。 DPP4是一种跨膜糖蛋白,具有酶活性,可从多种底物上切割N末端二肽。DPP4的活性与免疫应答和葡萄糖稳态有关。为了深入了解DPP4在胰岛素抵抗中的病理生理作用,我们在这里探讨了长时间暴露于缺氧的DPP4表达,这是实验性肥胖症的实验模型。我们在这里使用了一种快速的方法从活检组织中分离细胞,并用抗体对其进行免疫标记。然后准备细胞用于共聚焦显微镜的热分析。结果表明,长时间暴露在低氧环境中似乎会增加DPP4上脂细胞的表达。

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  • 会议地点 Aberdeen(GB)
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    Laboratory for Neuroendocrinology - Molecular Cell Physiology, Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, Zaloska 4, 1000 Ljubljana, Slovenia, Celica, Biomedical Center, Technology Park 24, 1000 Ljubljana, Slovenia Email: helena.chowdhury@mf.uni-lj.si;

    Laboratory for Neuroendocrinology - Molecular Cell Physiology, Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, Zaloska 4, 1000 Ljubljana, Slovenia, Celica, Biomedical Center, Technology Park 24, 1000 Ljubljana, Slovenia;

    Laboratory for Neuroendocrinology - Molecular Cell Physiology, Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, Zaloska 4, 1000 Ljubljana, Slovenia, Celica, Biomedical Center, Technology Park 24, 1000 Ljubljana, Slovenia;

    Celica, Biomedical Center, Technology Park 24, 1000 Ljubljana, Slovenia;

    Department of Automation, Biocybernetics and Robotics, Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia, Email: igor.mekjavic@ijs.si;

    Department of Environmental Physiology, School of Technology and Health, Royal Institute ofTechnology, Berzelius v. 13, Stockholm, Sweden, Email: ola.eiken@sth.kth.se;

    Laboratory for Neuroendocrinology - Molecular Cell Physiology, Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, Zaloska 4, 1000 Ljubljana, Slovenia, Celica, Biomedical Center, Technology Park 24, 1000 Ljubljana, Slovenia Email: robert.zorec@celica.si;

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