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  • Title: Significance of various cholesterol, ester hydrolases in aorta.
    Author: Subbiah MT.
    Journal: Steroids; 1979 Mar; 33(3):305-15. PubMed ID: 442126.
    Abstract:
    This study for the first time has simultaneously assayed three cholesteryl ester hydrolase activities located in the various subcellular fractions (lysosomal, microsomal, and soluble) of the aorta and their significance in aortic cholesteryl ester accumulation during genetic and cholesterol-fed atherosclerosis is assessed. When the enzyme activities in the aorta of age-matched atherosclerosis-susceptible White Carneau and atherosclerosis-resistant Show Racer pigeons were compared, a decrease in microsomal cholesteryl ester hydrolase activity was found during the period of cholesteryl ester accumulation. However, under cholesterol-fed conditions (which further increase cholesteryl ester accumulation), an increase in lysosomal cholesteryl ester hydrolase activity and a decrease in soluble cholesteryl ester hydrolase activity was found. These studies have documented differences in response in specific cholesteryl ester hydrosases of the aorta to genetic and cholesterol-fed atherogenesis and warrant further studies to investigate the effect of hormonal and dietary factors on the activities of these enzymes.
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