background: coronary artery disease (cad) is a multifactorial and heterogenic disease. recently, genome-wide association studies have reported that rs1333040 (c/t) and rs1004638 (a/t) single nucleotide polymorphisms (snps) in the 9p21 locus have very strong association with cad. this study aimed to examine these associations in southwest of iran. methods: blood samples were collected from 200 c...

the innate immune system recognizes the presence of bacterial products through the expression of a family of membrane receptors known as toll-like receptors (tlrs). polymorphisms in tlrs have been shown to be associated with increased susceptibility to diseases such as inflammatory bowel disease. the aim of this study was to determine whether there was a correlation between polymorphisms of tlr...

background: regulatory cd4+t (treg) cells are effective in maintaining immune tolerance. objective: to investigate single nucleotide polymorphisms (snps) of transforming growth factor β-1 (tgf-β1) and forkhead box protein 3 (foxp3) genes in iranian patients with allergic rhinitis (ar). methods: variations at codons 10 and 25 of tgf-β1 and foxp3 at positions -3279 a>c and -924 a>g were evaluated...

metabolic syndrome (mets) is characterized by a cluster of cardiovascular risk factors that include: abdominal obesity, dyslipidaemia, hypertension, insulin resistance and impaired glucose tolerance. recent genome wide association studies have identified several susceptibility regions involved in lipid metabolism that are also associated with mets. we have explored the association of 9 genetic ...

In Caenorhabditis elegans collagens comprise a dispersed family of 40-150 genes, the majority of which probably code for collagen proteins found in the animal's cuticle. The conserved (Gly-X-Y)n triple helix coding sequence of collagen genes has facilitated the isolation of a large number of C. elegans collagen genes by recombinant DNA methods. We have begun a study of the chromosomal organizat...

abstract background: gastric cancer is one of the most common malignant tumors in iran. hypomethylation and/or hypermethylation of dna have been described in gastric cancer and is presumed to be an early event in this process. objective: we hypothesized that single nucleotide polymorphisms of dnmt1 gene may be associated with the genetic susceptibility to gastric cancer. methods: 200 patients a...

Non-recombining sex chromosomes are expected to undergo evolutionary decay, ending up genetically degenerated, as has happened in birds and mammals. Why are then sex chromosomes so often homomorphic in cold-blooded vertebrates? One possible explanation is a high rate of turnover events, replacing master sex-determining genes by new ones on other chromosomes. An alternative is that X-Y similarit...

The non-recombining nature of the Y chromosome and the well-established phylogeny of Y-specific Single Nucleotide Polymorphisms (Y-SNPs) make them useful for defining haplogroups with high geographical specificity; therefore, they are more apt than the Y-STRs to detect population stratification in admixed populations from diverse continental origins. Different Y-SNP typing strategies have been ...

BACKGROUND AND RATIONALE Age is one of the predictors for sustained virological response (SVR) when treating chronic hepatitis C (CHC) patients with pegylated-interferon/ribavirin (PegIFN/RBV). However, the treatment responses of the young patients had not been analyzed before. Therefore, we conducted this study to investigate the treatment responses of CHC patients younger than 40 years old (y...

A chromosomal locus (ure) involved in the production of urease activity in the bacterial pathogen Yersinia pseudotuberculosis was characterized. The genetic organization of the Y. pseudotuberculosis ure locus closely resembles that of the related ureolytic Yersinia species Y. enterocolitica. This locus encompasses seven open reading frames encoding polypeptides with predicted molecular weights ...