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PubMed2003

Fenofibrate treatment is associated with better glycemic control and lower serum leptin and insulin levels in type 2 diabetic patients with hypertriglyceridemia.

Background: Hertriglyceridemia is commonly encountered in type 2 diabetic patients. Fibrates are a group of drugs that efficiently decrease triglycerides, increase HDL, and improve the prognosis in both diabetic and nondiabetic patients. However, the effects of fibrates on glycemic control, blood pressure, fasting serum insulin, and leptin concentrations are not clear. The present study addresses the question of whether fenofibrate treatment in hypertriglyceridemic type 2 diabetic patients leads to changes in metabolic control, body mass index, leptin, free fatty acids, plasma insulin, and blood pressure. Methods: Thirty-one type 2 diabetic patients who had serum triglyceride levels between 250 and 400 mg/dl were included in the study. They were given 250 mg/day fenofibrate once daily for 3 months. Antidiabetic and antihypertensive treatments were kept unchanged throughout the study. Results: Fenofibrate treatment resulted in better glycemic control, as evidenced by lower fasting and postprandial blood glucose and HbAlc, decreased fasting serum insulin and leptin levels, as well as a reduction in hypertrigyceridemia and serum free fatty acids, and an increase in HDL cholesterol. Blood pressure, body mass index, and LDL remained unchanged. Fenofibrate was well tolerated in all patients. Conclusion: Fenofibrate treatment in hypertriglyceridemic type 2 diabetic patients is beneficial not only in terms of lipid profile, but also for glycemic control and insulin resistance.

Journal Article↗
PubMed1989

Hypertriglyceridemia and lower LDL cholesterol concentration in relation to apolipoprotein E phenotypes in myotonic dystrophy.

Plasma lipid, lipoprotein levels and apolipoprotein apo E phenotypes were determined in 70 patients with myotonic dystrophy (MyD) and 81 controls. Marked differences were noticed in the apo E phenotype frequencies between the two groups. Plasma triglycerides and VLDL cholesterol were higher in MyD than controls, but only the latter was related to differences in the apo E phenotypes between two groups. Accordingly, the ratio of VLDL cholesterol/plasma triglycerides was increased significantly in MyD, suggesting accumulation of intermediary density particles due to lower affinity of E2 containing lipoproteins for lipoprotein cell receptors. The LDL cholesterol concentration was lower in MyD than controls and was related to differences in the apo E phenotype frequencies between the two groups. These results indicate increased removal of LDL particles in the apo E2 phenotypes, perhaps due to upregulation of LDL (B, E) receptor activity. Plasma cholesterol and HDL cholesterol concentrations were similar in both groups. Another feature of the study was lower levels of plasma cholesterol, triglycerides, VLDL and LDL cholesterol in the homozygous E4:E4 phenotype. These results suggest increased clearance rate of both VLDL and LDL particles and support the concept that apo E4-containing lipoproteins have higher in vivo affinity for ape E and/or B, E receptors.

Adolescent↗
PubMed2006

Evaluation of the hypolipemic property of Camellia sinensisVar. ptilophylla on postprandial hypertriglyceridemia.

A naturally decaffeinated tea, Camellia sinensis var. ptilophylla (cocoa tea), has long been popular in southern China as a healthy beverage. Our experiments indicate that a single oral administration of 500 mg/kg of cocoa tea extract suppresses increases in plasma triacylgycerol (TG) levels when fed with 5 mL/kg of olive or lard oil in mice and that the inhibition rates are 22.9% and 31.5%, respectively, compared with controls. Under the same condition, cocoa tea extract did not affect the level of plasma free fatty acid. Likewise, the extract reduced the lymphatic absorption of lipids at 250 and 500 mg/kg. Also, cocoa tea extract and polyphenols isolated from cocoa tea inhibit pancreatic lipase. These findings suggest that cocoa tea has hypolipemic activity, which may be due to the suppression of digestive lipase activity by the polyphenols contained within the tea.

Animals↗
PubMed1985

Effects of tiadenol and clofibrate on plasma post heparin lipolytic hepatic, extrahepatic and monoglyceride hydrolase activities in rats with hypertriglyceridemia induced by a sucrose rich diet.

Normal rats fed an isocaloric sucrose-rich diet (SRD) for 3 weeks developed high levels of triacylglycerol in plasma (P) (mmol triacylglycerol I-1) heart (H) and liver (L) tissues (mumol triacylglycerol mg DNA-1) as compared to control rats fed the standard chow (STD) (X +/- SEM; P: SRD 1.32 +/- 0.06 vs STD 0.49 +/- 0.05, P less than 0.001; H: SRD 2.1 +/- 0.17 vs STD 0.94 +/- 0.01, P less than 0.001; L: SRD 8.48 +/- 1.47 vs STD 1.71 +/- 0.12, P less than 0.001). A simultaneous drop in the activities (mumol glycerol ml-1 hr-1) of several plasma post heparin lipolytic enzymes was observed; total triglyceride lipase (T-TGL): SRD 5.32 +/- 0.34 vs STD 7.48 +/- 0.64, P less than 0.01; lipoprotein lipase (LPL): SRD 1.61 +/- 0.26 vs STD 2.42 +/- 0.41, P less than 0.05; hepatictriglyceride lipase (H-TGL): SRD 3.71 +/- 0.28 vs STD 5.05 +/- 0.69, P less than 0.05 and monoglyceride hydrolase (MGH) (mumol glycerol I-1 min-1): SRD 558 +/- 108 vs STD 1165 +/- 45, P less than 0.001. Rats fed the SRD presented glucose intolerance after i.v. glucose (Kg X 10(-2); 1.06 +/- 0.09 vs 2.61 +/- 0.14 of STD, P less than 0.001) in spite of the presence of hyperinsulinism (sigma plasma IRI microU/ml from 0 to 30 min: 184.6 +/- 23.6 vs 100.5 +/- 9.7 of STD, P less than 0.01) suggesting that a state of insulin resistance had developed.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗