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Year : 2014  |  Volume : 62  |  Issue : 2  |  Page : 183--188

Association of genetic polymorphisms at beta-adrenergic receptor with risk of intracerebral hemorrhagic stroke in North Indian population: A case control study

1 Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
2 Department of Neurobiochemistry, All India Institute of Medical Sciences, New Delhi, India

Correspondence Address:
Kameshwar Prasad
Department of Neurology, Clinical Epidemiology Unit, Room No. 704, Neurosciences Center, All India Institute of Medical Sciences, Ansari Nagar, New Delhi
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0028-3886.132383

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Background: Stroke is a multifactorial, polygenic disorder, influenced by both environmental and genetic factors. Aim: The purpose of this study was to determine the association of beta-1 and beta-2 adrenergic receptor (AR) polymorphisms with intracerebral hemorrhagic stroke (ICH) in a North Indian population. Materials and Methods: One hundred and six patients with intracerebral hemorrhage (ICH) and 106 age- and sex- matched controls were recruited. Genotyping was performed by using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. RFLP results of three samples of each genotype were confirmed by DNA sequencing. Results: Mean age of cases and controls were 53.47 ± 14 and 52.92 ± 13.4, respectively. Significant association between Ser49Gly polymorphism of beta-1 AR and ICH in patients who had onset of disease at a later stage of life (>50 years) under a dominant model of inheritance (OR, 3.6; 95% 1.4 to 9.7) was observed. Under the dominant model of inheritance, Gln27Glu polymorphism of beta-2 AR was associated with risk of ICH (OR, 3.2; 95% CI, 1.7 to 5.8) and significant association persisted even after adjustment for demographic and other risk factor variables (OR, 2.9; 95% CI, 1.04 to 8; P = 0.04). Age-stratified analysis showed an independent significant association of Gln27Glu polymorphism of beta-2 AR with risk of ICH in patients those had onset of disease at young age (<50 years) under a dominant model of inheritance (OR, 3.5; 95% CI, 1.1 to 11). Conclusion: The present study provides the first preliminary evidence that Gln27Glu polymorphism of beta-2 AR may contribute modest effect in increase in risk of ICH in North Indian Population. Large prospective studies with large sample size are required to confirm these findings.


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