Low vitamin B6 but not homocyst(e)ine is associated with increased risk of stroke and transient ischemic attack in the era of folic acid grain fortification.

Abstract:

BACKGROUND AND PURPOSE:The introduction of cereal grain folic acid fortification in 1998 has reduced homocyst(e)ine (tHcy) concentrations in the US population. We performed a case-control study to determine the risk of stroke and transient ischemic attack (TIA) associated with tHcy and low vitamin status in a postfortification US sample. METHODS:Consecutive cases with new ischemic stroke/TIA were compared with matched controls. Fasting tHcy, folate, pyridoxal 5'-phosphate (PLP), B12, and MTHFR 677C-->T genotype were measured. RESULTS:Mean PLP was significantly lower in cases than controls (39.97 versus 84.1 nmol/L, P<0.0001). After stroke risk factors were controlled for, a strong independent association was present between stroke/TIA and low PLP (adjusted odds ratio [OR], 4.6; 95% CI, 1.4 to 15.1; P<0.001) but not elevated tHcy (OR, 0.92; 95% CI, 0.4 to 2.1). CONCLUSIONS:Low B6 but not tHcy was strongly associated with cerebrovascular disease in this postfortification, folate-replete sample.

journal_name

Stroke

journal_title

Stroke

authors

Kelly PJ,Shih VE,Kistler JP,Barron M,Lee H,Mandell R,Furie KL

doi

10.1161/01.STR.0000071109.23410.AB

subject

Has Abstract

pub_date

2003-06-01 00:00:00

pages

e51-4

issue

6

eissn

0039-2499

issn

1524-4628

pii

01.STR.0000071109.23410.AB

journal_volume

34

pub_type

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