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  • Title: Hyperhomocyst(e)inemia is a risk factor of secondary vascular events in stroke patients.
    Author: Del Ser T, Barba R, Herranz AS, Seijas V, López-Manglano C, Domingo J, Pondal M.
    Journal: Cerebrovasc Dis; 2001 Aug; 12(2):91-8. PubMed ID: 11490102.
    Abstract:
    OBJECTIVE: Moderate hyperhomocyst(e)inemia is an independent risk factor for stroke, but it is unclear whether it also would be a risk factor for secondary vascular events after stroke. METHODS: Longitudinal study of 137 consecutive ischemic stroke patients (age 45-91 years) who were prospectively studied with a standard clinical protocol. Vascular events (stroke recurrence, ischemic heart disease, deep venous thrombosis or peripheral arterial disease) were identified during 2 years of follow-up. Serum homocyst(e)ine was determined 3 months after the stroke. The cumulative proportion of patients with homocyst(e)ine above or below the 75th percentile who survived free of vascular events was determined by Kaplan-Meier analysis. Cox models were used to estimate the relative risk of vascular events after controlling for other confounding factors. RESULTS: Serum homocyst(e)ine was significantly higher in patients with vascular events (26.2 versus 19.4 micromol/l; p = 0.016). The cumulative proportion of patients with vascular events was 46.5% in the group with homocyst(e)ine over the 75th percentile (>30 micromol/l) and 20.2% in the other group (log-rank test 7.5; p = 0.0062). After adjustment for age, sex, high blood pressure, diabetes, heart disease, previous cerebrovascular disease, smoking and serum cholesterol, the relative risk of vascular event for patients above compared with those below the 75th percentile of serum homocyst(e)ine was 2.8 (CI 95% 1.3-6; p = 0.01). CONCLUSION: Hyperhomocyst(e)inemia is a significant risk factor for vascular events after ischemic stroke. This finding is independent of other risk factors such as hypertension, and may have therapeutic relevance in the secondary prevention of vascular diseases in stroke patients.
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