کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5854780 1562041 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Genistein alleviates lead-induced neurotoxicity in vitro and in vivo: Involvement of multiple signaling pathways
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست بهداشت، سم شناسی و جهش زایی
پیش نمایش صفحه اول مقاله
Genistein alleviates lead-induced neurotoxicity in vitro and in vivo: Involvement of multiple signaling pathways
چکیده انگلیسی
Lead (Pb) is a ubiquitous environmental and industrial pollutant. It induces neurotoxicity and cell death by disrupting the pro- and anti-oxidative balance; however, the mechanisms of its toxicity have yet to be fully understood. The soy-derived isoflavonoid, genistein (GEN), was reported to possess neuroprotective and antioxidative properties. The present study investigated the molecular mechanisms of Pb-induced neurotoxicity in vivo and in vitro, addressing the efficacy of GEN in protecting against Pb-induced toxicity. Pb exposure was associated with reduction of cell viability and cell apoptosis, concomitant with reactive oxygen species (ROS) generation in vitro, and pre-treatment with GEN markedly ameliorated the Pb-induced oxidative injury by increasing the expression of key antioxidant enzymes and the antioxidant transcription factor, nuclear factor erythroid 2 p45-related factor 2 (Nrf2). Next, PKC-α activation was found after Pb exposure in vitro and pretreatment with GEN attenuated Pb-induced ROS generation by PKC-α inhibition. MAPK-NF-κB activation triggered by Pb was also inhibited by GEN. In summary, our study establishes that GEN alleviates Pb-induced impairment in spatial memory, and reduces cell apoptosis caused by Pb exposure and GEN protects neurons from Pb-induced neurotoxicity by downstream activation of antioxidant and anti-apoptotic pathways via regulation of Nrf2 and MAPK-NF-κB signaling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroToxicology - Volume 53, March 2016, Pages 153-164
نویسندگان
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