نتایج جستجو برای: ژن gpx1
تعداد نتایج: 16299 فیلتر نتایج به سال:
How higher organisms respond to elevated oxidative stress in vivo is poorly understood. Therefore, we measured oxidative stress parameters and gene expression alterations (Affymetrix arrays) in the liver caused by elevated reactive oxygen species induced in vivo by diquat or by genetic ablation of the major antioxidant enzymes CuZn-superoxide dismutase (Sod1) and glutathione peroxidase-1 (Gpx1)...
To identify the relationship between selenium intake and breast cancer progression, SeMet supplement was applied to 4T1 murine mammary carcinoma for 28 days and the effect of SeMet on tumor growth was assessed. Combined with SXRF mapping, trace metal distribution in tumor tissues in relation to selenium-associated protein expressions and cellular transcription factors, HIF-1α accumulation and i...
سرطان کولورکتال ناشی از رشد سرطان در ناحیه کولون و رکتوم می باشد. این بیماری در زنان به عنوان دومین سرطان رایج و در مردان سومین سرطان شایع به شمار می رود. استرس اکسیداتیو حالتی است که در آن تعادل بین گونه های اکسیژن فعال (ros) و آنتی اکسیدان ها مختل می شود. کاتالاز (cat) و گلوتاتیون پراکسیداز (gpx-1) دو آنزیم آنتی اکسیدان اصلی هستند که ros را طی یک فرایند متوالی از میان می برند. pro198leu از ژن...
The hierarchy of selenium (Se) requirements for growing rats ranges from 0.01 to 0.1 g Se/g diet, depending on the choice of Se status parameter. To further evaluate the efficacy of molecular biology markers to determine Se requirements in later periods of the life cycle, which are less amenable to traditional approaches, we studied pregnant and lactating rats. Female weanling rats were fed a S...
BACKGROUND AND OBJECTIVES The risk of non-Hodgkin's lymphoma (NHL) has been associated with inflammation. One possible mechanism may involve oxidative stress as reactive oxygen species (ROS) can generate pro-inflammatory signals. Anti-oxidant enzymes including superoxide dismutase, glutathione peroxidase and catalase protect against the harmful effects of ROS. Genetic variation in the genes cod...
Dietary selenium (Se) requirements in rats have been based largely upon glutathione peroxidase-1 (Gpx1) enzyme activity and Gpx1 mRNA levels can also be used to determine Se requirements. The identification of the complete selenoprotein proteome suggests that we might identify additional useful molecular biomarkers for assessment of Se status. To characterize Se regulation of the entire rat sel...
Rodents and humans have 24-25 selenoproteins, and these proteins contain the 21st amino acid, selenocysteine, incorporated co-translationally into the peptide backbone in a series of reactions dependent on at least 6 unique gene products. In selenium (Se) deficiency, there is differential regulation of selenoprotein expression, whereby levels of some selenoproteins and their transcripts decreas...
The hierarchy of selenium (Se) requirements for growing rats ranges from <0.01 to 0.1 microg Se/g diet, depending on the choice of Se status parameter. To further evaluate the efficacy of molecular biology markers to determine Se requirements in later periods of the life cycle, which are less amenable to traditional approaches, we studied pregnant and lactating rats. Female weanling rats were f...
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