The purpose of this meta-analysis was to investigate the correlation between serum homocysteine (Hcy) levels and the pathogenesis of cerebral infarction (CI). Relevant studies involving serum Hcy levels and the pathogenesis of CI were identified using electronic database search supplemented with manual search. The search result studies were screened in accordance with our strict inclusion and exclusion criteria. Statistical analyses were conducted with Comprehensive Meta Analysis 2.0 (CMA 2.0) software. A total of 13 studies were eligible for our meta-analysis and included 1206 patients with CI and 1202 healthy controls. Our meta-analysis revealed that the serum Hcy levels in CI patients were significantly higher than those in healthy controls. Subgroup analysis based on ethnicity showed that Caucasians and Asians had significantly higher serum Hcy levels in CI patients compared to healthy controls and Africans showed no significant differences in serum Hcy levels between CI patients and controls. In conclusion, our meta-analysis reveals a strong correlation between elevated serum Hcy levels and the pathogenesis of CI, suggesting that serum Hcy levels may be an important biomarker for the early diagnosis and treatment assessment of CI.
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