Caveolins/caveolae protect adipocytes from fatty acid-mediated lipotoxicity
نویسندگان
چکیده
منابع مشابه
Caveolins/caveolae protect adipocytes from fatty acid-mediated lipotoxicity.
Mice and humans lacking functional caveolae are dyslipidemic and have reduced fat stores and smaller fat cells. To test the role of caveolins/caveolae in maintaining lipid stores and adipocyte integrity, we compared lipolysis in caveolin-1 (Cav1)-null fat cells to that in cells reconstituted for caveolae by caveolin-1 re-expression. We find that the Cav1-null cells have a modestly enhanced rate...
متن کاملEvidence for protein-mediated fatty acid efflux by adipocytes.
AIM The hormonally controlled mobilization and release of fatty acids from adipocytes into the circulation is an important physiological process required for energy homeostasis. While uptake of fatty acids by adipocytes has been suggested to be predominantly protein-mediated, it is unclear whether the efflux of fatty acids also requires membrane proteins. METHODS We used fluorescent fatty aci...
متن کاملDoes Endurance Training Protect From Lipotoxicity?
Modest regular exercise and reduction of dietary fat halves the risk of developing type 2 diabetes. In overt type 2 diabetes, higher levels of exercise training improve glycemic control, whereas the impact of diet and optimal dietary composition are presently unknown (1). Thus, one can assume that intensive exercise protects from diet-induced insulin resistance. Intravenous lipid infusion is an...
متن کاملFatty acid-induced insulin resistance in adipocytes.
Elevated serum-free fatty acid (FFA) levels induce insulin resistance in whole animals and humans. To understand the direct mechanism by which FFAs impact insulin-responsive tissue, we have used our previously developed in vitro model of long-chain saturated fatty acids (LCSFA)-induced insulin resistance in adipocytes. In addition to explanted rat adipocytes, we now demonstrate that overnight e...
متن کاملTriglyceride accumulation protects against fatty acid-induced lipotoxicity.
Excess lipid accumulation in non-adipose tissues is associated with insulin resistance, pancreatic beta-cell apoptosis and heart failure. Here, we demonstrate in cultured cells that the relative toxicity of two common dietary long chain fatty acids is related to channeling of these lipids to distinct cellular metabolic fates. Oleic acid supplementation leads to triglyceride accumulation and is ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Lipid Research
سال: 2011
ISSN: 0022-2275
DOI: 10.1194/jlr.m015628