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Higher serum homocysteine levels are associated with an increased risk of hemorrhagic transformation in patients with acute ischemic stroke.

BMC Neurology 2023 March 12
BACKGROUND: Hemorrhagic transformation (HT) is a common complication of acute ischemic stroke (AIS), and may develop into parenchyma hemorrhage (PH). We aimed to investigate the association between serum homocysteine levels and HT as well as PH in all AIS patients, and in those with and without thrombolysis by subgroup analysis.

METHODS: AIS patients who were admitted within 24 h after onset were enrolled and categorized into the higher homocysteine level group (≥ 15.5 µmol/L) and the lower homocysteine level group (< 15.5 µmol/L). HT was determined by a second round of brain imaging within 7 days during hospitalization, and PH was defined as hematoma in the ischemic parenchyma. Multivariate logistic regression was used to investigate the associations between serum homocysteine levels and HT and PH, respectively.

RESULTS: Of the 427 included patients (mean age 67.35 years, 60.0% males), 56 (13.11%) developed HT and 28 (6.56%) had PH. Serum homocysteine levels were significantly associated with HT (adjusted OR 1.029, 95%CI 1.003-1.055) and PH (adjusted OR 1.041, 95%CI 1.013-1.070). The higher homocysteine group was more likely to have HT (adjusted OR 1.902, 95% CI 1.022-3.539) and PH (adjusted OR 3.073, 95% CI 1.327-7.120) than the lower homocysteine group. Subgroup analysis of patients without thrombolysis also showed the significant differences in HT (adjusted OR 2.064, 95% CI 1.043-4.082) and PH (adjusted OR 2.926, 95% CI 1.196-7.156) between the two groups.

CONCLUSION: Higher serum homocysteine levels are associated with an increased risk of HT and PH in AIS patients, especially in those without thrombolysis. Monitoring the serum homocysteine may be conducive to determining individuals at a high risk of HT.

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