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Metformin improves peripheral vascular flow in nonhyperlipidemic patients with arterial disease.

Abstract：

:The clinical activity of metformin (N,N-dimethyl biguanide), a widely used antidiabetic agent, on arterial blood flow was evaluated in 15 patients with peripheral atherosclerosis. Flow was determined by quantitative strain-gauge plethysmography; plasma lipid, lipoprotein, and apoprotein levels were repeatedly tested during the cross-over trial, comparing 6 months of drug and placebo administration. Metformin (850 mg tid) significantly increased arterial flow after a standardized ischemia (+17.3% after 3 months and +40.0% after 6 months). The increase in arterial flow was reversible after the switch to placebo was made. The drug was similarly effective, although to a lesser extent (+18.6% after 6 months), when given after the placebo. A highly significant effect of drug treatment, as well as of the sequence of administration, could be established by analysis of variance. In spite of the minimal changes of plasma lipid levels during metformin, a highly significant increase of high density lipoprotein cholesterol (+ 8.3% during the whole treatment) was demonstrated; plasma levels of isoprotein AI-1 were also raised during the metformin period. This controlled experiment confirms data from previous open studies, as well as from a longstanding clinical experience. Although the mechanism of the metformin effect cannot, at present, be defined, the reported results indicate that treatments not markedly affecting plasma lipid-lipoprotein levels may improve vascular function in selected arterial districts.

journal_name

J Cardiovasc Pharmacol

journal_title

Journal of cardiovascular pharmacology

authors

Sirtori CR,Franceschini G,Gianfranceschi G,Sirtori M,Montanari G,Bosisio E,Mantero E,Bondioli A

doi

10.1097/00005344-198409000-00027

subject

Has Abstract

pub_date

1984-09-01 00:00:00

pages

914-23

issue

5

eissn

0160-2446

issn

1533-4023

journal_volume

6

pub_type

临床试验,杂志文章,随机对照试验

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