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Plasma homocysteine level and the course of ischemic stroke

100%

Pniewski J. , Chodakowska-Zebrowska M. , Wozniak R. , Stepien K. , Stafiej A.

Acta Neurobiologiae Experimentalis

2003

tom 63

nr 2

127-130

Increased level of homocysteine (Hcy) in blood seems to influence negatively the course of ischemic stroke (IS), the possible mechanism of this action could be acceleration of oxidative stress. The aim of this study is to assess the influence of Hcy level in patients with IS on the prognosis 3 moths after the stroke onset. 75 patients aged 68.27 12.62 years, with the diagnosis of first ever IS were examined. Patients with the symptoms corresponding with TACS at the beginning of stroke and with diminished level of consciousness were not included. The level of Hcy over 15 mol/l was assessed as mild hiperhomocysteinemia (MHcy). 74 (98.7%) patients were assessed 3 months after IS onset in the Rankin scale. Recovery was assessed, according to Rankin Scale: good recovery (GR) 0-2, bad recovery (BR) 3-5 and death. MHcy was seen in 9 (14.5%) with GR and in 8 (66.7%) with BR (P=0,0005). MHcy increases the risk of BR 11.78 times (95%CI 2.93-47.42).

C677T polymorphism of the methylenetetrahydrofolate reductase gene and the risk of ischemic stroke in Polish subjects

88%

Goracy I. , Cyrylowski L. , Kaczmarczyk M. , Fabian A. , Koziarska D. , Goracy J. , Ciechanowicz A.

Journal of Applied Genetics

2009

tom 50

nr 1

63-67

Hyperhomocysteinemia is reported to be an independent risk factor for the development of ischemic stroke. Several studies on genetic variants of methylenetetrahydrofolate reductase (MTHFR, which plays a crucial role in regulation of plasma homocysteine concentration) reported an association between C677T gene polymorphism and stroke in some Asian populations. No study but one detected this association in Caucasians. The purpose of the present case-control study was to find a relationship between MTHFR genotypes and stroke in a Polish population. MTHFR genotypes were determined by PCR in 152 patients with ischemic stroke from northwestern Poland and in 135 consecutive newborns from the same population. The TT genotype and the T allele were significantly more frequent in patients than in the control group (11.8% vs. 4.4%, and 34.5% vs. 21.5%, P < 0.01). When males and females were analyzed separately, the differences were statistically significant in both genders. It is concluded that presence of the T allele is a risk factor for ischemic stroke in Polish subjects.