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Showing 2 results for Pparγ
Akbar Heidari, Mohammad Nouri , Mahzad Sadaghiani , Esmat Aghadavod,
Volume 20, Issue 6 (1-2017)
Abstract
Background: Polycystic ovarian syndrome (PCOS) often induces reduced ovulation, infertility and insulin resistance. One of the most influential inducer factors in disease is peroxisome proliferator-activated receptor gamma (PPARγ) a member of the nuclear receptor superfamily, which has a variety of physiological functions. PPARγ agonists are used for the treatment of insulin resistance, hyperandrogenism and ovarian dysfunction in PCOS patients. Fatty acids like eicosapentaenoic acid (EPA) and their metabolites are natural ligands for PPARγ and a good option for regulation of PPARγ gene expression.
Materials and Methods: This case-control study was carried out on 30 women with PCOS referred to the Tabriz-Alzahra fertility center for in vitro fertilization (IVF). Granulosa cells collected from follicular fluid of these individuals were cultured in vitro. Gene expression of PPARγ, insulin-like growth factor 1(IGF-1) and cyclooxygenase-2 were examined on cultured granulosa cells in culture medium and EPA–mediated culture media.
Results: The PPARγ gene expression was increased in EPA-treated medium with a maximum expression at a concentration of 100 mmol in 48 hours. On this basis, increment of PPARγ expression lead to the increased gene expression involved in the steroidogenesis, (i.e. IGF-1). However, the exptression of both genes were decreased in PCOS and the control medium.
Conclusion: In this study, we observed that different concentrations of EPA increased PPARγ gene expression.
Maryam Sadat Hashemi-Taklimi, Maryam Shabani, Saeedeh Shadmehri, Mohammad Sherafati-Moghadam, Mohammad Fathalipour,
Volume 23, Issue 4 (8-2019)
Abstract
Background: Today, important proteins and pathways have been identified that lead to the regulation of the white adipose tissue and converting it to brown adipose tissue, the proteins PPARγ and PRDM16 are key proteins in this setting. Diabetes is one of the major causes of obesity and complications that can interfere in the function of these two proteins. This study aimed to investigate the effect of 4 weeks High-Intensity Interval Training (HIIT) on the content of PPARγ and PRDM16 proteins in subcutaneous adipose tissue of diabetic obese male rats.
Materials and Methods: In this experimental study, 16 Sprague-Dawley male rats (mean weight of 300±20 gr) were selected and after induction of diabetes by injection of STZ and nicotinamide was randomly assigned into two groups: diabetic training and diabetic control. The experimental group performed HIIT training for 4 weeks, accordance with the training program for 4 weeks, while the control group did not have any training program. Independent T-test was used to analyze the data.
Results: Significant change was not observed in the content of PPARγ (P=0.16) and PRDM16 (P=0.83) proteins in HIIT training group compared to the control group.
Conclusion: According to the results of this study, HIIT training has not led to significant change the content of PPARγ and PRDM16 proteins. It seems to the intensity of HIIT training be a major contributor to the result that should be taken into consideration.
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