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High doses of bifendate elevate serum and hepatic triglyceride levels in rabbits and mice: animal models of acute hypertriglyceridemia

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Aim: To investigate the effects of bifendate on serum and hepatic lipids level in rabbits and mice. Methods: Animals were administered bifendate [powdered pill suspended in 0.5% sodium carboxymethylcellulose (CMC)] at increasing doses (0.25–1 g/kg, ig). Blood lipid and apolipoprotein levels were measured using commercially available assay kits. Results: The treatment of rabbits with a single dose of bifendate (0.3 g/kg) caused a time-dependent and biphasic change in serum triglyceride (TG) levels, with the value reaching a maximum (3 -fold increase compared to the baseline value) between 24 and 36 h post-dosing. When mice were orally treated with bifendate (0.25–1 g/kg), serum TG levels increased by 39%–76% and 14%–39% at 24 and 48 h post-dosing, respectively. When given at daily doses of 0.25 and 1 g/kg for 4 d, bifendate increased serum TG levels (56%–79%), with concomitant elevations in apolipoprotein A-I and apolipoprotein B levels at 24 h after the last dosing. TG levels were also increased (11%–43%) in liver samples of mice receiving single or multiple doses of bifendate. However, bifendate treatment caused slight reductions in serum and hepatic total cholesterol levels (9%–13%). The hypertriglyceridemia induced by bifendate was ameliorated by fenofibrate but not inositol nicotinate treatment in mice. Conclusion: The findings suggest that bifendate treatment at high oral doses can cause an acute elevation in serum and hepatic TG levels.

Keywords: acute hypertriglyceridemia; bifendate; fenofibrate; inositol nicotinate; total cholesterol; triglycerides

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1745-7254.2006.00332.x

Affiliations: 1: Department of Pharmacology, Beijing University of Chinese Medicine, Beijing 100029, China 2: Department of Biochemistry, Hong Kong University of Science & Technology, Clear Water Bay, Hong Kong, China

Publication date: June 1, 2006

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