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Abstract Title:

Randomized clinical trial of folate supplementation in patients with peripheral arterial disease.

Abstract Source:

Br J Surg. 2009 Sep;96(9):990-8. PMID: 19672935

Abstract Author(s):

N Khandanpour, M P Armon, B Jennings, P M Finglas, G Willis, A Clark, F J Meyer

Abstract:

BACKGROUND: The aim was to determine whether folate supplementation improved arterial function in patients with peripheral arterial disease (PAD). METHODS: Individuals with PAD were randomly assigned to receive 400 microg folic acid (45 patients) or 5-methyltetrahydrofolate (5-MTHF) (48) daily, or placebo (40) for 16 weeks. Primary endpoints were changes in plasma total homocysteine (tHcy), ankle : brachial pressure index (ABPI) and pulse wave velocity (PWV). Secondary outcomes were changes in plasma inflammatory markers. RESULTS: Plasma tHcy was significantly reduced in folic acid and 5-MTHF groups compared with controls: median difference: - 2.12 (95 per cent confidence interval - 3.70 to - 0.75) micromol/l (P = 0.002) and - 2.07 (-3.48 to - 0.54) micromol/l (P = 0.007) respectively. ABPI improved significantly: median difference 0.07 (0.04 to 0.11) (P < 0.001) and 0.05 (0.01 to 0.10) (P = 0.009) respectively. Brachial-knee PWV (bk-PWV) decreased significantly in individuals receiving 5-MTHF and tended to be reduced in those taking folic acid compared with controls: median difference: - 1.10 (-2.20 to - 0.20) m/s (P = 0.011) and - 0.90 (-2.10 to 0.00) m/s (P = 0.051) respectively. Plasma levels of inflammatory markers were not affected. CONCLUSION: Folate administration reduced plasma homocysteine, and slightly improved ABPI and bk-PWV. (c) 2009 British Journal of Surgery Society Ltd. Published by John Wiley & Sons, Ltd.

Study Type : Human Study

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Sayer Ji
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