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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Renin-angiotensin system haplotypes and the risk of myocardial infarction and stroke in pharmacologically treated hypertensive patients.

The products of the renin-angiotensin system (RAS) play an important role in the pathogenesis of cardiovascular disease. Studies examining RAS gene variants and cardiovascular disease have focused on single-nucleotide polymorphisms (SNPs) rather than haplotypes, which better characterize the patterns of genetic variation. The authors conducted a population-based, case-control study at Group Health (Seattle, Washington) between 1995 and 1999 to determine whether common haplotypes in the angiotensinogen gene (AGT), the renin gene, the angiotensin-converting enzyme gene, and the angiotensin II receptor type 1 and receptor type 2 genes were associated with the risk of myocardial infarction and stroke among pharmacologically treated hypertensive patients. SNP discovery was done using 23 European-origin samples. Thirty tagSNPs (the minimum sets of SNPs that capture most of the haplotype diversity within a block) were genotyped in cases and controls. Haplotypes were inferred using the program PHASE (http://www.stat.washington.edu/stephens/software.html). The authors used weighted logistic regression to estimate associations and conducted a permutation test to estimate the probability of a chance finding. AGT haplotype B was associated with the risk of myocardial infarction (odds ratio = 1.58, 95% confidence interval: 1.06, 2.35); however, results were not statistically significant given the number of tests performed (permutation p = 0.17). In this case-control study, RAS gene haplotypes were not significantly associated with increased risks of myocardial infarction or stroke.[1]

References

  1. Renin-angiotensin system haplotypes and the risk of myocardial infarction and stroke in pharmacologically treated hypertensive patients. Marciante, K.D., Bis, J.C., Rieder, M.J., Reiner, A.P., Lumley, T., Monks, S.A., Kooperberg, C., Carlson, C., Heckbert, S.R., Psaty, B.M. Am. J. Epidemiol. (2007) [Pubmed]
 
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