نتایج جستجو برای: genotype frequency
تعداد نتایج: 565280 فیلتر نتایج به سال:
The presence of missing single-nucleotide polymorphism (SNP) genotypes is common in genetic studies. For studies with low-density SNPs, the most commonly used approach to dealing with genotype missingness is to simply remove the observations with missing genotypes from the analyses. This naïve method is straightforward but is valid only when the missingness is random. However, a given assay oft...
Background: Helicobacter pylori vacA (vacuolating toxin A) gene is comprised of mid- (m), intermediate- (i) and signal-regions. Recently, the vacA-i region genotype has been suggested to be a better predictor of disease severity than either the s- or m-region. The main aim of the present study was to determine the associations of i region poly-morphisms of vacA gene with gastric cancer (GC) and...
Background: Repeated implantation failure (RIF) is the main problem after using assisted reproductive techniques (ART). The main causes of RIF as a multifactorial problem including decrease in endometrial receptivity, defects of embryo or combinational. Successful embryo implantation depends on trophoblast proliferation, migration and invasion to the endometrium, all of which are associated wit...
Background: Angiotensin I converting enzyme (ACE) is a Zinc metalloproteinase, converts Ang-I to Ang- II, a pro-inflammatory agent which may contribute to pathophysiology of some diseases like type 2 diabetes. Objective: To investigate the relationship between ACE I/D polymorphism and type 2 diabetes in 261 Iranian casecontrol pairs. Methods: 170 patients (85 type 2 diabetics with nephropathy a...
Background & Aims: Tuberculosis is the second factor in the deaths caused by infectious diseases in the world. Out of every ten infected people, only in one the clinical symptoms of the disease is developed. The correct vitamin D receptor activity on the nuclei of macrophages is one of the main components of the host innate immunity against M. tuberculosis. In the present study, the relation...
The melanocortin-1 receptor (MC1R) gene has been investigated by many studies regarding the pigmentation variation in various species. In order to determine its allelic and genotypic distribution, we sequenced the goat MC1R gene from 78 individuals in ten populations (Gembrong, Senduro, Ettawa Grade, Boerawa, Boerka, Kosta, Samosir, Muara, Boer and Kacang). Direct sequencing m...
Background and purpose: Oral squamous cell carcinoma (OSCC) is the most common tumor of the head and neck. XRCC1 is a DNA repair gene and there are controversies about the association between XRCC1 gene polymorphism (RS1799782) in pathogenesis and susceptibility to OSCC. The purpose of this study was to investigate the association between XRCC1 (rs1799782) gene polymorphism and its dominant all...
Background and purpose: Glutathion S-transferase (GSTs) are a family of detoxification phase II enzymes that catalyze the conjugation of carcinogenic and cytotoxic componds with glutathion. GSTs are polymorphic and deletion of GSTM1 and GSTT1 polymorphism is caused by lack of enzyme production that lead to loss of antioxidant activity. In this study, we examined the frequency of GSTM1 and G...
The objective of this study was to evaluate myostatin (MSTN) gene by polymerase chain reaction -restriction fragment length polymorphism (PCR-RFLP) and sequencing methods in four goat breeds including Mohabadi, Markhoz, Lori and Bital breeds. A573 bp fragment of MSTN gene was amplified by PCR. A new 5 bp deletion in 5`UTR (206TTTTA) of the MSTN gene was directly identified by sequencing. The AA...
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