Abstract
Chylomicrons are the triglyceride-rich lipoproteins that carry dietary lipids absorbed in the intestine. In the bloodstream , chylomicron triglycerides are broken-down by lipoprotein lipase using apoliprotein (apo) CII as co factor. Fatty acids and glycerol resulting from the enzymatic action are absorbed and stored in the body tissues mainly adipose and muscle for subsequent utilizations energy source. The resulting triglycerides depleted remnants are taken-up by liver receptor such as the LDL receptor using mainly apo E as ligand. For methodological reasons, chylomicron metabolism has been unfrequently studied in subjects despite its pathophysiological importance, and this metabolism was not evaluated in the great clinical trials that established the link between atherosclerosis and lipids. In studies using oral fat load tests, it has been shown that in patients with coronary artery disease there is a trend to accumulation of post-prandial triglycerides, vitamin A or apo B-48 , suggesting that in those patients chylomicrons and their remnants are slowly removed from the circulation. A triglyceride-rich emulsion marked radioisotopic which mimics chylomicron metabolism when injected into the bloodstream has been described that can offer a more straight forward approach to evaluate chylomicrons. In coronary artery disease patients both lipolysis and remnant removal from the
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Citation Formats
Brandizzi, Laura Ines Ventura.
Chylomicrons metabolism in patients with coronary artery disease; Metabolismo de quilomicrons em pacientes portadores de doenca arterial coronaria.
Brazil: N. p.,
2002.
Web.
Brandizzi, Laura Ines Ventura.
Chylomicrons metabolism in patients with coronary artery disease; Metabolismo de quilomicrons em pacientes portadores de doenca arterial coronaria.
Brazil.
Brandizzi, Laura Ines Ventura.
2002.
"Chylomicrons metabolism in patients with coronary artery disease; Metabolismo de quilomicrons em pacientes portadores de doenca arterial coronaria."
Brazil.
@misc{etde_20943325,
title = {Chylomicrons metabolism in patients with coronary artery disease; Metabolismo de quilomicrons em pacientes portadores de doenca arterial coronaria}
author = {Brandizzi, Laura Ines Ventura}
abstractNote = {Chylomicrons are the triglyceride-rich lipoproteins that carry dietary lipids absorbed in the intestine. In the bloodstream , chylomicron triglycerides are broken-down by lipoprotein lipase using apoliprotein (apo) CII as co factor. Fatty acids and glycerol resulting from the enzymatic action are absorbed and stored in the body tissues mainly adipose and muscle for subsequent utilizations energy source. The resulting triglycerides depleted remnants are taken-up by liver receptor such as the LDL receptor using mainly apo E as ligand. For methodological reasons, chylomicron metabolism has been unfrequently studied in subjects despite its pathophysiological importance, and this metabolism was not evaluated in the great clinical trials that established the link between atherosclerosis and lipids. In studies using oral fat load tests, it has been shown that in patients with coronary artery disease there is a trend to accumulation of post-prandial triglycerides, vitamin A or apo B-48 , suggesting that in those patients chylomicrons and their remnants are slowly removed from the circulation. A triglyceride-rich emulsion marked radioisotopic which mimics chylomicron metabolism when injected into the bloodstream has been described that can offer a more straight forward approach to evaluate chylomicrons. In coronary artery disease patients both lipolysis and remnant removal from the plasma of the chylomicron-like emulsions were found slowed-down compared with control subjects without the disease. The introduction of more practical techniques to assess chylomicron metabolism may be new mechanisms underlying atherogenesis. (author)}
place = {Brazil}
year = {2002}
month = {Jul}
}
title = {Chylomicrons metabolism in patients with coronary artery disease; Metabolismo de quilomicrons em pacientes portadores de doenca arterial coronaria}
author = {Brandizzi, Laura Ines Ventura}
abstractNote = {Chylomicrons are the triglyceride-rich lipoproteins that carry dietary lipids absorbed in the intestine. In the bloodstream , chylomicron triglycerides are broken-down by lipoprotein lipase using apoliprotein (apo) CII as co factor. Fatty acids and glycerol resulting from the enzymatic action are absorbed and stored in the body tissues mainly adipose and muscle for subsequent utilizations energy source. The resulting triglycerides depleted remnants are taken-up by liver receptor such as the LDL receptor using mainly apo E as ligand. For methodological reasons, chylomicron metabolism has been unfrequently studied in subjects despite its pathophysiological importance, and this metabolism was not evaluated in the great clinical trials that established the link between atherosclerosis and lipids. In studies using oral fat load tests, it has been shown that in patients with coronary artery disease there is a trend to accumulation of post-prandial triglycerides, vitamin A or apo B-48 , suggesting that in those patients chylomicrons and their remnants are slowly removed from the circulation. A triglyceride-rich emulsion marked radioisotopic which mimics chylomicron metabolism when injected into the bloodstream has been described that can offer a more straight forward approach to evaluate chylomicrons. In coronary artery disease patients both lipolysis and remnant removal from the plasma of the chylomicron-like emulsions were found slowed-down compared with control subjects without the disease. The introduction of more practical techniques to assess chylomicron metabolism may be new mechanisms underlying atherogenesis. (author)}
place = {Brazil}
year = {2002}
month = {Jul}
}