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Rosiglitazone modulates insulin-induced plasma membrane area changes in single 3T3-L1 adipocytesVelebit Marković, Jelena ...In this study we hypothesized that rosiglitazone, an antidiabetic high-affinity agonist for the peroxisome proliferator-activated receptor gamma, affects the plasma membrane (PM) turnover in single ... 3T3-L1 adipocytes. To study the PM turnover, the patch-clamp electrophysiological method was usedto measure changes in membrane capacitance (C (m)), a parameter linearly related to the PM area. Microscopy results show that the presence of rosiglitazone in the differentiating medium significantly increased the differentiation of 3T3-L1 adipocytes in cell culture, based on oil red O-stained area (11.4 +/- 1.2%) vs. controls (3.1 +/- 0.5%). Moreover, rosiglitazone treatment significantly reduced the size of single 3T3-L1 adipocytes; their average radius of 21.1 +/- 1.1 mum in controls was reduced to 17.5 +/- 0.5 mum in rosiglitazone-treated cells. Consistent with this, insulin application increased the rate of C (m) increase to 2.34 +/- 0.10%/min, which was significantly different from controls (0.12 +/- 0.08%/min). However, pretreatment of cells with rosiglitazone prior to the treatment with insulin resulted in an attenuated rate of C (m) increase. Thesedata support the involvement of insulin in the modulation of membrane area and show that treatment by rosiglitazone reduced the insulin-mediated membrane area increase in 3T3-L1 adipocytes.Source: The journal of membrane biology. - ISSN 0022-2631 (Letn. 223, št. 3, 2008, str. 141-149)Type of material - article, component partPublish date - 2008Language - englishCOBISS.SI-ID - 24857049
Author
Velebit Marković, Jelena |
Kovačič, Petra Brina, nevrobiologinja |
Lobe Prebil, Mateja |
Chowdhury Haque, Helena |
Grilc, Sonja |
Kreft, Marko |
Jensen, Jørgen, fizik |
Isenović, Esma R. |
Zorec, Robert, 1958-
Topics
Adipocytes |
Drug Effects |
Endocytosis |
Exocytosis |
Insulin |
Hypoglycemic Agents |
Cell Membrane Permeability |
Electric Conductivity |
Cells, Cultured |
Patch-Clamp Techniques |
Microscopy, Confocal |
Eksocitoza |
Hipoglikemiki |
Adipociti |
Inzulin |
Endocitoza |
Celična membrana, propustnost |
Električna prevodnost |
Mikroskopija konfokalna |
Celične kulture |
Snov-vnos, tehnike
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Velebit Marković, Jelena | 32525 |
Kovačič, Petra Brina, nevrobiologinja | 28638 |
Lobe Prebil, Mateja | 28325 |
Chowdhury Haque, Helena | 18548 |
Grilc, Sonja | 06846 |
Kreft, Marko | 15666 |
Jensen, Jørgen, fizik | |
Isenović, Esma R. | |
Zorec, Robert, 1958- | 03702 |
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