The plasma cholesterol esterification reaction
نویسندگان
چکیده
منابع مشابه
Cholesterol esterification in rabbit plasma.
1. When [4-(14)C]cholesterol, attached to beta-globulin or dispersed with Tween 20, was incubated with fresh rabbit (New Zealand albino females) plasma, 30-47% esterification was observed. The optimum pH was 6.8. This esterification was accomplished by the transfer of fatty acids from the C-2 position of lecithin (phosphatidylcholine) to cholesterol. 2. There was no evidence that triglycerides ...
متن کاملRole of sphingomyelin in the regulation of cholesterol esterification in the plasma lipoproteins. Inhibition of lecithin-cholesterol acyltransferase reaction.
In order to determine whether sphingomyelin (SPH) affects the rate of cholesterol esterification by plasma lecithin-cholesterol acyltransferase (LCAT), we studied the effects of its incorporation in to defined proteoliposome substrates containing phosphatidyl choline (PC), unesterified cholesterol, and apoprotein A-I, on the activity of purified LCAT. Cholesterol esterification was inhibited by...
متن کاملThe relationship between dietary fat composition and plasma cholesterol esterification
1. Cholesterol esterscation has been studied in the plasma of subjects on diets rich in saturated or polyunsaturated fat. 2. The diet rich in polyunsaturated fat was associated with lower rates of plasma cholesterol esterification in vitro. The data suggest that there was a reduction of plasma lecithin-cholesterol acyltransferase activity as well as decreased ability of the lipoprotein substrat...
متن کاملRegulation of plasma cholesterol esterification by sphingomyelin: effect of physiological variations of plasma sphingomyelin on lecithin-cholesterol acyltransferase activity.
Although sphingomyelin (SM) is the most abundant phospholipid in the plasma, next to phosphatidylcholine (PC), its physiological function in plasma is unclear. Here we employed plasma from various genetic models of mice which naturally differ in their plasma SM/PC ratios, to study the role of SM as a modulator of LCAT, the enzyme responsible for HDL maturation and the synthesis of cholesteryl e...
متن کاملAn enzymatic method for the determination of the initial rate of cholesterol esterification in human plasma.
A method is described for the determination of the initial rate of cholesterol esterification in human plasma, based on the enzymatic determination of free cholesterol in the plasma before and after incubation at 37 degrees C. The cholesterol esterification rate was linear up to 40 minutes. In 18 normal male and 10 normal female subjects the cholesterol esterification rate was 91 +/- 15 (mean +...
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ژورنال
عنوان ژورنال: Nippon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics
سال: 1969
ISSN: 0300-9173
DOI: 10.3143/geriatrics.6.308