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Applying DNA barcodes for identification of plant species in the family Araliaceae
Authors:Liu Zhihua  Zeng Xu  Yang Dan  Chu Guiyan  Yuan Zhengrong  Chen Shilin
Affiliation:
  • a Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Begumpet, Hyderabad-500016, India
  • b Dr. NTR University of Health Sciences, Vijayawada, Andhra Pradesh, India
  • c Nizams Institute of Medical Sciences, Punjagutta, Hyderabad-500082, India
  • d Dept. of Botany and Microbiology, King Saud University, Riyadh, Saudi Arabia
  • e National Institute of Nutrition, Tarnaka, Hyderabad, India
  • Abstract:Genetic variants of tPA (PLAT) and PAI-1 genes have been suggested to be the risk factors for stroke. In the present case-control study we investigated the association of − 7351 C/T polymorphism (rs2020918) and I/D polymorphism of tPA gene and Insertion/deletion polymorphism (4 G/5 G) of PAI-1 gene with genetic predisposition to ischemic stroke. 516 stroke patients and 513, sex and age matched healthy controls were involved in the study. We did not find a significant association of tPA − 7351 C/T polymorphism and PAI-1 4 G/5 G polymorphism with stroke. However, in case of I/D polymorphism significant difference was observed in the genotypic distribution and allelic frequency between the stroke patients and healthy controls. DD genotype and D allele associated significantly with stroke (p = 0.002 and < 0.001 respectively). We also found significant association of I/D polymorphism with intracranial large artery atherosclerosis and stroke of undetermined etiology. Exploring the association between gene-gene interaction (26 combinations including the three variants) and stroke, we found that individuals with CC + 4G4G + DD, CC + 5G5G + ID, CT + 4G5G + ID, CT + 5G5G + II, CT + 5G5G + ID and TT + 4G5G + II had a significantly higher risk of stroke. The results of this study suggest that − 7351 C/T polymorphism of tPA and 4 G/5 G polymorphism of PAI-1 are not associated with stroke, while as DD genotype and D allele of tPA gene are important risk factors for ischemic stroke. Further we found that the subjects with different tPA and PAI genotype combinations displayed a significantly high risk for overall ischemic stroke suggesting that gene-gene interaction involving more variants may change the susceptibility of particular subjects to the disease.
    Keywords:tPA (PLAT), Tissue Plasminogen Activator   PAI, Plasminogen Activator Inhibitor   CT, Computed Tomography   MRI, Magnetic Resonance Imaging   ARMS, Amplification Refractory Mutation System   Open EPI6, Open Epi Version 2.3.1 from Department of Epidemology, Rollins School of Public Health   A.P, Andhra Pradesh   HDL, High Density Lipoprotein   TOAST, Trial of Org 10172 in Acute Stroke Treatment
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