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Translational Stroke Research : Volume 1

Association of CYP1A1 Gene Polymorphism with Ischemic Stroke in South Indian Population

Content Provider	Springer Nature Link
Author	Sultana, Shehnaz Kolla, Venkata Karunakar Peddireddy, Vidyullatha Jeedigunta, Yasovanthi Penagaluru, Pranay K. Joshi, Sindhu Penagaluru, Usha Rani Penagaluru, Pardhananda Reddy
Copyright Year	2011
Abstract	Stroke is a major cause of morbidity and mortality worldwide. Genetic and environmental factors are involved in the pathogenesis of stroke. Hypertension, diabetes mellitus, and cigarette smoking are the major risk factors, and smoking doubles the risk of ischemic stroke. Smoking cessation decreased the risk for ischemic stroke. CYP1A1 is the phase I metabolizing enzyme which plays a key role in metabolic activation of polycyclic aromatic hydrocarbons which are present in cigarette smoke and considered carcinogenic. So far, the association of CYP1A1 gene polymorphism with stroke has not been investigated in Indian population. So, the study is taken up to evaluate the association of this polymorphism with ischemic stroke in a South Indian population. We genotyped 215 ischemic stroke patients and 162 age-matched controls using polymerase chain reaction–restriction fragment length polymorphism. Statistical analysis showed that CYP1A1 “CC” genotype is associated with five times increased risk of ischemic stroke (odds ratio (OR) = 5.14; 95% confidence interval (95% CI) = 1.14–23.14, p = 0.01), while “TT” (OR = 0.78, 95% CI = 0.51–1.19, p = 0.25) and “TC” (OR = 1.04, 95% CI = 0.67–1.60, p = 0.85) genotypes were nonsignificant with the increased risk of stroke. T and C allele frequencies in stroke were 76.5% and 23.5% as against 81.8% and 18.2% in control group, respectively, thus, suggesting no statistically significant differences in the T (OR = 0.72, 95% CI = 0.50–1.03, p = 0.07) and C (OR = 1.37, 95% CI = 0.96–1.97, p = 0.07) allele frequencies between the two groups. The distribution of CYP1A1 genotypes and allelic frequency within the stroke subtypes showed a significant association of CC genotype only in intracranial large artery atherosclerosis (OR = 5.21, 95% CI = 1.03–26.38, p = 0.02) while other subtypes did not show any association. Further analysis of CYP1A1 genotypes in patients and control subjects with smoking habit also showed a similar trend. Hence, we conclude that the CYP1A1 CC genotype is associated with the increased risk of ischemic stroke.
Starting Page	26
Ending Page	32
Page Count	7
File Format	PDF
ISSN	18684483
Journal	Translational Stroke Research
Volume Number	2
Issue Number	1
e-ISSN	1868601X
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-01-20
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cytochrome P450 Ischemic stroke Gene polymorphism South Indian population Smoking Vascular Surgery Neurosurgery Cardiology Neurology Neurosciences
Content Type	Text
Resource Type	Article
Subject	Cardiology and Cardiovascular Medicine Neuroscience Neurology (clinical)

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