introduction: transforming growth factor-beta 1 (tgf-β1) is a pleiotropic cytokine with potent anti-inflammatory property, which has been considered as an essential risk factor in the inflammatory process of ischemic stroke (is), by involving in the pathophysiological progression of hypertension, atherosclerosis, and lipid metabolisms. -509c/t tgf-β1 gene polymorphism has been found to be assoc...

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. MaterialsAndMethods The aim of this study was to evaluate the frequency of two previously repo...

In this paper, we describe a production procedure of the one-to-one double helical complex of poly(dG)-poly(dC), characterized by a well-defined length (up to 10 kb) and narrow size distribution of molecules. Direct evidence of strands slippage during poly(dG)-poly(dC) synthesis by Klenow exo(-) fragment of polymerase I is obtained by fluorescence resonance energy transfer (FRET). We show that ...

hepatitis c virus is one of the main reasons for chronic liver disease and hepatocellular carcinoma. combination therapy with interferon (peg-ifn-α) and ribavirin (rbv) clear the virus more likely than the others. different factors like virus and host characteristics influence on response to treatment. the most important viral factors include virus genotype and viral load; host factors like gen...

background: normal tissue toxicity continues to remain as a major challenge for radiation oncologists for delivering the total dose to the tumour cells in cancer patients. cellular, molecular and plasma based early biomarkers to predict the overreactions and non-overreactions of normal tissue toxicity before the initiation of radiotherapy can be valuable for personalised treatment. the aim of t...

coronary artery disease (cad) including myocardial infarction (mi) as its complication, is one of the most common heart diseases worldwide and also in iran, with extremely elevated mortality. cad is a multifactorial disorder. twin and family studies at different loci have demonstrated that genetic factors have an important role in the progression of cad. many studies have reported a significant...

background: several methods have been developed for detection of sequence variation in genes and each has its advantages and disadvantages. a disadvantage of them is that the simpler, cost-effective methods are commonly perceived as being less sensitive in their detection of sequence variation, whereas those with proven sensitivity have a requirement for complex or expensive laboratory equipmen...

background: bcl-2 is the most important anti-apoptotic regulator and bax is a pro-apoptotic protein. the status of these parameters or the ration of bcl-2 to bax is important in malignant cell fate as well as normal cells. methods: sixty-two all patients and 62 healthy sex-and age-matched controls were studied. after genotyping, the promoter region of the bax and bcl-2 genes by rflp-pcr method ...

A 90-base-pair tract of a simple sequence composed of alternating guanosine and thymidine nucleotide residues (poly[d(GT) . d(CA)]) was inserted into the simian virus 40 genome at nucleotide 2666 (0.17 map units). The poly[d(GT) . d(CA)] insertion was stably maintained in the viral genome, but the variant virus grew more slowly than simian virus 40.