Atorvastatin decreases apolipoprotein C-III in apolipoprotein B-containing lipoprotein and HDL in type 2 diabetes: a potential mechanism to lower plasma triglycerides.
Diabetes Care
; 27(6): 1358-64, 2004 Jun.
Article
in En
| MEDLINE
| ID: mdl-15161788
ABSTRACT
OBJECTIVE:
Apolipoprotein (apo)C-III is a constituent of HDL (HDL apoC-III) and of apoB-containing lipoproteins (LpBC-III). It slows the clearance of triglyceride-rich lipoproteins (TRLs) by inhibition of the activity of the enzyme lipoprotein lipase (LPL) and by interference with lipoprotein binding to cell-surface receptors. Elevated plasma LpBC-III is an independent risk factor for cardiovascular disease. We studied the effect of atorvastatin on plasma LpBC-III and HDL apoC-III. RESEARCH DESIGN ANDMETHODS:
We studied the effect of 30 weeks' treatment with 10 and 80 mg atorvastatin on plasma apoC-III levels in a randomized, double-blind, placebo-controlled trial involving 217 patients with type 2 diabetes and fasting plasma triglycerides between 1.5 and 6.0 mmol/l.RESULTS:
Baseline levels of total plasma apoC-III, HDL apoC-III, and LpBC-III were 41.5 +/- 10.0, 17.7 +/- 5.5, and 23.8 +/- 7.7 mg/l, respectively. Plasma apoC-III was strongly correlated with plasma triglycerides (r = 0.74, P < 0.001). Atorvastatin 10- and 80-mg treatment significantly decreased plasma apoC-III (atorvastatin 10 mg, 21%, and 80 mg, 27%), HDL apoC-III (atorvastatin 10 mg, 22%, and 80 mg, 28%) and LpBC-III (atorvastatin 10 mg, 23%, and 80 mg, 28%; all P < 0.001). The decrease in plasma apoC-III, mainly in LpBC-III, strongly correlated with a decrease in triglycerides (atorvastatin 10 mg, r = 0.70, and 80 mg, r = 0.78; P < 0.001). Atorvastatin treatment also leads to a reduction in the HDL apoC-III-to-HDL cholesterol and HDL apoC-III-to-apoA-I ratios, indicating a change in the number of apoC-III per HDL particle (atorvastatin 10 mg, -21%, and 80 mg, -31%; P < 0.001).CONCLUSIONS:
Atorvastatin treatment resulted in a significant dose-dependent reduction in plasma apoC-III, HDL apoC-III, and LpBC-III levels in patients with type 2 diabetes. These data indicate a potentially important antiatherogenic effect of statin treatment and may explain (part of) the triglyceride-lowering effect of atorvastatin.
Search on Google
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Apolipoproteins B
/
Apolipoproteins C
/
Pyrroles
/
Angiotensin-Converting Enzyme Inhibitors
/
Hypertriglyceridemia
/
Diabetes Mellitus, Type 2
/
Heptanoic Acids
/
Lipoproteins, HDL
Type of study:
Clinical_trials
/
Risk_factors_studies
Limits:
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Diabetes Care
Year:
2004
Document type:
Article
Affiliation country:
Netherlands