Abstract
This study was undertaken to evaluate the role of ACE and αADDUCIN polymorphisms in patients with recurrent and nonrecurrent hypertensive intracerebral hemorrhage (ICH). A total of 101 nonrecurrent and 33 recurrent hypertensive ICH patients underwent an ACE (rs4646994) and αADDUCIN (rs4961) gene polymorphism study. The risk factors, clinical findings, CT scan abnormalities and functional outcome of recurrent and nonrecurrent ICH were compared. ACE (rs4646994) and αADDUCIN (rs4961) gene polymorphisms were also compared in the two groups and with 198 controls. The patients with recurrent ICH were older compared to those with nonrecurrent ICH and the other stroke risk factors were found in the two groups. Ganglionic-ganglionic pattern of recurrence was the commonest (75.6%) and all had at least one ICH in the location of hypertensive ICH. ACE DD genotype (OR6.18, 95%CI 2.93-13.02) and D allele (OR 2.43, 95%CI 1.70-3.47) were associated with nonrecurrent ICH compared to controls. In patients with recurrent ICH, DD genotype (OR 7.46, 95%CI 2.8-19.4) and D allele (OR 3.16, 95%CI 1.83-5.46) of ACE, and GW (OR 3.49, 95%CI 1.47-8.28), WW (OR 2.9, 95%CI 1.40-4.30) genotypes and W allele (OR 7.46, 95%CI 2.80-19.40) of αADDUCIN were more frequent compared to controls. Recurrent ICH also had higher frequency of WW genotype (OR 9.43, 95%CI 1.49-59.50) and W allele (OR 2.19, 95%CI 1.11-4.03) compared to nonrecurrent ICH. The frequency of DD + WW (P = 0.008) and DD/WW + ID/GW (P = 0.0001) genotypes in the recurrent ICH was higher than in the nonrecurrent ICH and the controls. Variant genotype combinations of ACE and αADDUCIN render the hypertensive patient more vulnerable to recurrent ICH.
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