abstract background and objective: a high level of homogeneity observed within all bacteria in the mycobacterium tuberculosis complex makes a property that seriously challenges traditional biochemical-based identification methods of these pathogens in the laboratory. the work presented here was conducted to characterize mycobacterium tuberculosis complex isolates in golestan, northern iran. mat...

background: urinary tract infections are one of the most frequent health problems and uropathogenic escherichia coli is the major pathogen resulting utis. the severity of utis is caused by the expression of a large range of virulence factors.in this study, we evaluated the allelic frequency fimh gene, in upecs isolated from patients with utis. this study also aimed to determine the roles of c64...

It is widely hoped that variation in the human genome will provide a means of predicting risk of a variety of complex, chronic diseases. A major stumbling block to the successful identification of association between human DNA polymorphisms (SNPs) and variability in risk of complex diseases is the enormous number of SNPs in the human genome (4,9). The large number of SNPs results in unacceptabl...

in study, spherical silver nanoparticles (snps) were synthesized by chemical reduction method from a metal precursor silver nitrate in presence of an anionic surfactant and strong reducing agent. in this experimental work, snps are synthesized in presence of different concentration of stabilizing agent and effect of stabilizing agent on size distribution of snps have been observed. further anti...

According to circumstance of kerman sarcheshmeh cooper complex that its anode slime is mainly consisted of Cu, Ag, Au, Pb and Se. In this work, recovery of silver from anode slime and subsequent synthesis of silver nanoparticles from leaching solution was made. Silver was separated from anode slime by using of HNO3 and HCl. X-Ray fluorescence spectroscopy (XRF) was used to characterize anode sl...

objective(s): accumulating evidence has demonstrated that mirnas contribute to various genetic and epigenetic modifications in the pathogenesis of gastric cancer (gc). recent studies focused on the four single nucleotide polymorphisms (snps) of pre-mirnas including rs11614913, rs3746444, rs2910164, and rs2292832. it was suggested that these four snps were significantly associated with the risk ...

background: single nucleotide polymorphism (snps) are considered as one of the underlying causes of male infertility. proper sperm chromatin packaging which involves replacement of histones with protamines has profound effect on male fertility. over 20 snps have been reported for the protamine 1 and 2. materials and methods: the aim of this study was to evaluate the frequency of two previously ...