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Effect of AMO 1618 on cholesterol and fatty acid metabolism in chickens and rats.

Abstract：

:AMO 1618 (2-isopropyl-4-dimethylamino-5-methylphenyl-1-piperidine carboxylate methyl chloride) was added to corn-soy based diets and fed to 9-week-old female chickens for 3 weeks to measure the inhibition of hepatic beta-hydroxy-beta-methylglutaryl coenzyme A (HMG-CoA) reductase and cholesterol 7 alpha-hydroxylase. Dose-related decreases in the activities of these two enzymes were obtained (2.5--15 ppm) of AMO 1618. Decreases in plasma total cholesterol, chol-HDL, and chol-LDL levels were observed, but the decreases in chol-LDL were substantially larger than those of chol-HDL in both chicken and rat. Assays of livers from rats fed 20 ppm AMO 1618 for 3 days had 24% less HMG-CoA reductase activity and 67% less cholesterol 7 alpha-hydroxylase activity than the controls. Plasma cholesterol in these animals was reduced 26%; the ratio of total cholesterol : chol-HDL was reduced from 3.27 to 2.67 and the chol-LDL : chol-HDL ratio was reduced from 1.96 to 1.14 as a result of the relatively brief treatment. Fatty acid synthetase (FAS) and other key lipogenic enzymes increased 1.5--4-fold in both the chicken and rat. The inhibition of HMG-CoA reductase and the induction of FAS by AMO 1618 were tested in vitro, using 10--100 micrograms (28--280 mumoles) for 15 min with isolated hepatocytes from chicken and rat. Linear responses in activity were dose-dependent and increased with duration of incubation (30 micrograms or 85 mumoles AMO 1618, 5--120 min) in both species. The results suggest the compound acts at the cellular level and AMO 1618 appears to possess several properties which recommend it for testing as a cholesterol-lowering agent in humans.

journal_name

Atherosclerosis

journal_title

Atherosclerosis

authors

Qureshi AA,Abuirmeileh N,Burger WC,Din ZZ,Elson CE

doi

10.1016/0021-9150(83)90111-9

subject

Has Abstract

pub_date

1983-02-01 00:00:00

pages

203-16

issue

2

eissn

0021-9150

issn

1879-1484

pii

0021-9150(83)90111-9

journal_volume

46

pub_type

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