Hormone-sensitive lipase is critical mediators of acute exercise-induced regulation of lipolysis in rat adipocytes.

Abstract:

:The purpose of the present study was to investigate the effect of acute exercise on lipolysis via coordination of hormone-sensitive lipase (HSL) and scaffold proteins, i.e., perilipin A and comparative gene identification-58 (CGI-58), in rat primary adipocytes. Glycerol release was significantly elevated immediately (0h) and three hours (3h) after exercise. Both activity and localization to the pellet of HSL were significantly greater in the pellet fraction, which is included in lipid droplet associated-proteins, than in the supernatant fraction. In the pellet fraction, although neither perilipin A nor CGI-58 protein level changed, level of perilipin A/CGI-58 complex was significantly reduced, accompanied by up-regulated association of perilipin A/HSL at 0h and 3h after exercise. On the other hand, there were no changes in these molecules at 24h after exercise, despite a significant decrease in lipolysis that was observed in response to isoproterenol. These findings suggest that acute exercise enhances lipolysis up to at least 3h after exercise in a manner dependent on modification of HSL and its association with and alteration in scaffold protein.

authors

Ogasawara J,Nomura S,Rahman N,Sakurai T,Kizaki T,Izawa T,Ishida H,Haga S,Ohno H

doi

10.1016/j.bbrc.2010.08.026

subject

Has Abstract

pub_date

2010-09-10 00:00:00

pages

134-9

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(10)01512-3

journal_volume

400

pub_type

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