نتایج جستجو برای: p53
تعداد نتایج: 42422 فیلتر نتایج به سال:
Introduction & Objective: Genetic agents play important roles in developing of cancers. Mutations and polymorphism affects on p53 protein function in suppressing tumor. We aimed to investigate the intron 3 polymorphism of p53 in Isfahanian breast invasive ductal carcinoma. Materials & Methods: We undertook a case–control study on 192 controls and 192 patients with breast invasive ductal carc...
The objective of the present study was to compare P53 protein expression in aggressive and non-aggressive Basal Cell Carcinoma(BCC). BCC is the most common skin cancer in whites and is seen in men more than in women. P53 is a tumor suppressor gene and has role in cell growth control. Mutation in this gene leads to loss of cell growth control and, therefore, malignancy. Various studies...
زمینه و هدف: سرطان معده دومین سرطان شایع در جهان است. فاکتورهای ژنتیکی مانند انکوژن ها و ژن های سرکوبگر تومور، همواره از جمله مهمترین عوامل در بروز این سرطان هستند. ژن P53 یک ژن سرکوبگر تومور است و نقش بسیار مهمی در فرآیند مرگ برنامه ریزی شده سلول ایفا می کند. جهش در ژن P53 موجب از بین رفتن عملکرد محافظتی آن شده که یکی ازعوامل اصلی بروز سرطان معده در انسان است. این مطالعه با هدف بررسی جهش ها...
Cyclooxygenase-2 (COX-2) has a pivotal role in the pathogenesis of the lung cancer. It is known that COX-2 negatively regulates the activity of a number of tumor suppressors, including p53. Consequently, inhibition of COX-2 signaling is anticipated to be a promising approach to stabilize p53 functionality. In this regard, we investigated the effect of COX-2 signaling blockade on p53 and COX-2 e...
backgrounds and aims: p53 gene is regarded important in pathogenesis of different cancers. therefore, this study aimed to investigate the frequency of p53 gene codon 72 arg/pro polymorphism in women suffering from breast cancer. materials and methods: a total of 90 patients with breast cancer and 83 matched healthy control women participated in this case-control study. genomic dna was extracted...
p53 tumor suppressor gene, also known as “genome guardian” is mutated in more than half of allkind of cancers. in this study we have investigated the controls of environmental ph for p53 genemutation in point of specific sequence which is prone to mutagenesis. the most probable cancerousmutations occur as point mutations in exons 5-8 of p53 gene. the 175th codon of p53 is the thirdmost mutated ...
background: human papillomavirus (hpv) and p53 alterations are speculated to play a role in carcinogenesis. this study was carried out to find out the association of hpv and p53 with precancerous lesions of the oral cavity such as leukoplakia: the objective of this study was to find the association among human papilloma virus (hpv) 16 infections and p53 polymorphism in tobacco using the oral le...
مقدمه: ادنتوژنیک کراتوسیست(okc) یک نوع کیست رشدی تکاملی است که دارای خصوصیات تهاجمی و میزان عود بالا میباشد. کیست دنتی ژروس شایع ترین کیست رشدی تکاملی فکین می باشد، که توانایی تبدیل به نئوپلاسم را دارد.p53 و mdm2 (murine double minute2) در برخی از کیستها و تومورهای ادنتوژنیک افزایش بیان پیدا میکنند. هدف از این مطالعه بررسی بروز نشانگرهای mdm2 و p53 در ادونتوژنیک کراتوسیست و کیست دنتیژروس و...
introduction: gastric cancer remains the second most common cause of cancer-related deaths worldwide. in many malignancies like, lung and breast, multiple prognostic factors are known, such as mutations in ki-67, her-2/neu, p53. in this study, we evaluated immunohistochemical protein expression patterns of cell-cycle-regulators p53, proliferation marker ki-67, surface expression of cd44, her-2/...
Introduction: Prostatic adenocarcinoma is the most common malignancy of internal system and after lung cancer is the second cause of death in male. Genetic base of many neoplasms is related to suppressor tumor gene such as P53. Therefore, we aimed in this study, to assess the intensity of prostatic adenocarcinoma tissue staining with P53 staining method and its relationship with Gleason grade. ...
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