Apolipoprotein B and triacylglycerol secretion in human triacylglycerol hydrolase transgenic mice
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چکیده
منابع مشابه
Apolipoprotein B and triacylglycerol secretion in human triacylglycerol hydrolase transgenic mice.
Apolipoprotein B (apoB)-containing lipoproteins play a critical role in whole body lipid homeostasis and the pathogenesis of atherosclerosis. The assembly of hepatic apoB-containing lipoproteins, VLDL, is governed by the availability of lipids, including triacylglycerol (TG). The majority of TG associated with VLDL is derived from the hepatic cytoplasmic lipid stores by a process involving lipo...
متن کاملEffects of triacylglycerol and diacylglycerol oils on blood clearance, tissue uptake, and hepatic apolipoprotein B secretion in mice.
Prior studies have suggested that FAs liberated in the small intestine from ingested 1,3-diacylglycerol (DAG) are inefficiently incorporated into triglyceride (TG) in enterocytes, with less chylomicron TG entering the circulation postprandially. We found less TG, but more monacylglyerol and DAG, with similar total acylglycerol in newly secreted chylomicrons after oral DAG or triacylglycerol (TA...
متن کاملCharacterisation of triacylglycerol hydrolase activities in human placenta.
Triacylglycerol hydrolase activities were characterised in homogenates, cytosol, and microvillous membranes (MVM) of human placenta. Homogenates of placenta exhibited three distinct triacylyglycerol hydrolase activities with pH optima 4.5, 6.0 and 8. 0. On further fractionation, placental cytosol exhibited both acid cholesterol ester hydrolase (pH 4.5) and hormone sensitive lipase (pH 6.0) acti...
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The effects of alpha and beta-adrenergic stimulation on triacylglycerol secretion were investigated in isolated rat hepatocytes. Epinephrine within 3h of incubation suppressed triacylglycerol secretion by 35% and increased its cellular content by 18%. The inhibitory effect of epinephrine was abolished by inclusion of phentolamine and also prazosin but not with propranolol. Trifluoperazine c...
متن کاملAltered Lipid Droplet Dynamics in Hepatocytes Lacking Triacylglycerol Hydrolase Expression
Lipid droplets (LDs) form from the endoplasmic reticulum (ER) and grow in size by obtaining triacylglycerols (TG). Triacylglycerol hydrolase (TGH), a lipase residing in the ER, is involved in the mobilization of TG stored in LDs for the secretion of very-low-density lipoproteins. In this study, we investigated TGH-mediated changes in cytosolic LD dynamics. We have found that TGH deficiency resu...
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ژورنال
عنوان ژورنال: Journal of Lipid Research
سال: 2007
ISSN: 0022-2275
DOI: 10.1194/jlr.m700320-jlr200