کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8526320 | 1557945 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nrf2 overexpression is associated with P-glycoprotein upregulation in gastric cancer
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
علوم پزشکی و سلامت
پزشکی و دندانپزشکی
تومور شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The efficacy of chemotherapeutic agents remains very poor in gastric cancer (GC) patients due to the development of multidrug resistance (MDR) phenotype. The nuclear factor erythroid 2-related factor 2 (Nrf2), is a pivotal transcriptional factor that regulates phase II detoxifying enzymes, antioxidants and efflux transporters including P-glycoprotein (P-gp). The aim of this study was to investigate the association of Nrf2 and P-gp and their correlations with clinicopathological criteria in GC patients.Nrf2 and MDR1/P-gp expressions in both mRNA and protein levels were examined by real-time PCR and immunohistochemical staining (IHC) respectively, in endoscopic biopsy samples from60 GC patients compared with those expressions in non-GC individuals. Our results from IHC examinations revealed that Nrf2 expression in GC patients (46.7%) is markedly higher than that in non-GC individuals (11.7%) (p < 0.001, Mann-Whitney test) which was confirmed by real-time PCR in mRNA levels. Induction of P-gp as a drug efflux pump, was associated with Nrf2 overexpression in these samples (r = 0.55, p < 0.001). There was also a strong correlation between Nrf2 overexpression and tumor size, histological grade, lymph node and distant metastasis while P-gp upregulation was shown to be associated only with the histological grade and tumor size (Chi-square, all p < 0.05). Our results suggest that therapeutic inhibition of Nrf2 expression can improve the efficacy of chemotherapeutic agents for GC patients by down regulation of P-gp expression.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomedicine & Pharmacotherapy - Volume 97, January 2018, Pages 286-292
Journal: Biomedicine & Pharmacotherapy - Volume 97, January 2018, Pages 286-292
نویسندگان
Farhad Jeddi, Narges Soozangar, Mohammad Reza Sadeghi, Mohammad Hossein Somi, Masoud Shirmohamadi, Amir-Taher Eftekhar-Sadat, Nasser Samadi,