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Hupolipidemic activity of (--)-hydroxycitrate
Lipids
|January 1, 1977
Summary
(-)--Hydroxycitrate significantly reduces triglyceride and cholesterol synthesis in rats. This compound effectively lowers lipid levels in both normal and hyperlipidemic models, demonstrating its potential for managing hypertriglyceridemia.
Area of Science:
- Biochemistry
- Pharmacology
- Metabolic Research
Background:
- Hypertriglyceridemia is a condition characterized by elevated triglyceride levels, often linked to increased hepatic lipogenesis.
- Adenosine triphosphate (ATP) citrate lyase is a key enzyme in fatty acid and cholesterol synthesis.
- (-)-Hydroxycitrate is a known inhibitor of ATP citrate lyase.
Purpose of the Study:
- To investigate the effect of (-)-hydroxycitrate on lipid synthesis and serum lipid levels in normal and hyperlipidemic rat models.
- To determine the impact of (-)-hydroxycitrate on both in vitro and in vivo hepatic fatty acid and cholesterol synthesis.
- To evaluate the efficacy of (-)-hydroxycitrate in different models of hypertriglyceridemia.
Main Methods:
- Utilized normal and hyperlipidemic rat models, including Zucker rats, fructose-treated rats, and Triton-treated rats.
- Assessed in vitro lipid biosynthesis in isolated liver cells.
- Measured in vivo hepatic fatty acid and cholesterol synthesis rates after oral administration of (-)-hydroxycitrate.
- Monitored serum triglyceride and cholesterol levels.
Main Results:
- (-)-Hydroxycitrate significantly reduced the biosynthesis of triglycerides, phospholipids, cholesterol, diglycerides, cholesteryl esters, and free fatty acids in isolated liver cells.
- Oral administration of (-)-hydroxycitrate suppressed in vivo hepatic fatty acid and cholesterol synthesis rates in normolipidemic rats.
- (-)-Hydroxycitrate significantly lowered serum triglyceride and cholesterol levels in various hyperlipidemic rat models, including Zucker, fructose-treated, and Triton-treated rats.
- The compound effectively reduced elevated triglyceride levels and hyperlipogenesis in Zucker and fructose-treated rats.
- In Triton-treated rats, (-)-hydroxycitrate inhibited both serum triglyceride levels and lipogenesis.
Conclusions:
- (-)-Hydroxycitrate is an effective inhibitor of hepatic lipid synthesis, impacting both fatty acid and cholesterol biosynthesis.
- The compound demonstrates significant potential in reducing serum triglyceride and cholesterol levels across multiple models of hypertriglyceridemia.
- (-)-Hydroxycitrate's ability to suppress lipogenesis makes it a promising therapeutic agent for managing lipid disorders.