نتایج جستجو برای: human reaction time
تعداد نتایج: 3593454 فیلتر نتایج به سال:
background: the aim of the current study was to assess the mrna levels of two mitochondria-related genes, including nuclear-encoded nrf1 (nuclear respiratory factor 1), mitochondrial transcription factor a (tfam), and mitochondrial-encoded cytochrome c oxidase subunit 1 (mt-co1) genes in various stages of the human oocyte maturation. methods: oocytes were obtained from nine infertile women with...
tissue nutrient supply may be synchronized with endogenous physiological rhythms to optimize animal and human health. glucose tolerance and insulin sensitivity have endogenous rhythms that are not essentially dependent on food type and eating. human glucose tolerance declines as day comes into night. based on such evolutionary findings, large evening meals must be avoided to reduce risks of vis...
background: one of the most common sexual‑transmitted infections among women is human papillomavirus (hpv) infection which is associated with genital cancers. different studies in iran reported various prevalences, and combining their results could be important for health policy makers. this study aims to determine the total prevalence of hpv infection as well as its related genotypes, particul...
objective: the aim of this study was to investigate the existence of human t-lymphotropic virus type 1 (htlv-1) in subgingival plaque of htlv-1 seropositive pa-tients. materials and methods: a total of 18 patients including 13 females and fivemales, with a mean age of 37 years participated in this descriptive study. half of them were htlv-1 carriers and the others were in htlv-1 associated myel...
background &objective: breast cancer is the most common female malignancy. detection of dna of human papillomaviruses (hpvs) in breast carcinomas suggests that the virus may play a role in the pathogenesis of this disease. the aim of this study was to evaluate the frequency of hpvs genotypes 6, 11, 16, 18 and 31 in paraffin-embedded tissue samples of invasive breast carcinomas. methods: thr...
background and objective: human papillomavirus (hpv) is one of the possible etiologic factors in development of esophageal squamous cell carcinoma (escc). in this study we aimed to study the role of hpv in escc. patients and methods:in this study, 140 cases of escc were analyzed for the hpv dna by polymerase chain reaction (pcr) using gp5+/gp6+ primers for l1 open reading frame (orf) to am...
conclusions in this study b19-parvovirus infection were detected in patients with hematologic disorders in comparison with control subjects. screening of patients with a high risk of parvovirus b19 infection can considerably reduce the incidence and prevalence of b19 infection. results the parvovirus b19-specific nucleotide sequence was detected in 6 patients (20%). none of the samples obtained...
مقدمه: آفلاتوکسین ها ترکیباتی سرطان زا هستند که توسط قارچ های aspergillus flvaus و a. parasiticus تولید می شوند. در میان آفلاتوکسین های شناخته شده سرطان زایی آفلاتوکسین b1 بیشتر از سایر آفلاتوکسین ها می باشد. این سم می تواند با آلوده کردن مواد غذایی وارد بدن انسان و درنهایت بافت پستان شود. دو ژن مؤثر در سرکوب تومور در پستان، ژن های brca1 و brca2 می باشند که بیان این ژن ها می تواند توسط آفلاتوکس...
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