OBJECTIVE Bisphenol A(BPA)is a commonly used phenolic environmental estrogen that impacts male reproductive system.Cistanchetubulosa(CT)is a traditional Chinese medicine used to boost male sexual activity.It has been ...OBJECTIVE Bisphenol A(BPA)is a commonly used phenolic environmental estrogen that impacts male reproductive system.Cistanchetubulosa(CT)is a traditional Chinese medicine used to boost male sexual activity.It has been proved for increasing the expression of steroidogenic enzyme and remarkable antioxidant activity.This study aimed to investigate the mechanisms behind the possible protective effects of CT against BPA-induced testicular and sperm toxicity in rats.METHODS CT was identified by 5.8sgene sequencing.The major compositions(echinacosideand acteoside)of CT were quantified by HPLC method.CT(200or 400mg·kg-1)or VE(positive control,300mg·kg-1)and BPA(200mg·kg-1)were administered orally(one time per day)to adult male ratsfor 6weeks.The sperm parameters were observed by dark-field microscope;serum hormone levels(FSH,LH and T)were tested by radio immunosorbent;LDH-x activity,redox balance status(content of MDA,GSH,H2O2 and OH-,and activity of SOD)were evaluated using commercial kits;the expression of the key steroidogenic enzymes were evaluated by qRT-PCR,heat map,immunofluorescence and Western blotting.RESULTS The CT treatment reversed BPA-induced abnormal in sperm characteristics,testicular structure and LDH-x activity,as well as normalized serum testosterone.CT increased both mRNA and protein expressions of key steroidogenic enzymes including StAR,CYP11A1,3β-HSD,17β-HSD and CYP17A1,suggesting that CT enhanced sex hormone synthesis.Moreover,the remarkable antioxidant effect of CT contributed to its protection against BPA-induced testicular toxicity,which was evidenced by the normalization of testicular,redox markers(MDA,H2O2,OH-and GSH contents,and SOD activity)after CT treatment.CONCLUSION CT effectively attenuated BPA-induced poor sperm quality and testicular toxicity in rats through steroidogenesis and redox pathways.展开更多
主题语境:生态保护篇幅:334词建议用时:7分钟1 A study reveals red squirrels are thriving on the Isle of Wight,with sufficient food and habitat to nearly double their estimated 3,500‐strong population—the largest remain...主题语境:生态保护篇幅:334词建议用时:7分钟1 A study reveals red squirrels are thriving on the Isle of Wight,with sufficient food and habitat to nearly double their estimated 3,500‐strong population—the largest remaining group of the endangered species in southern England.展开更多
基金The project supported by the High-end Foreign Experts Recruitment Programme of State Administration of Foreign Experts Affairs(GDW20146100228)the Ministry of Education and State Administration of Foreign Experts Affair″Overseas Teacher″Project(MS2011XBNL057)the Key Construction Program of International Cooperation Base in S&T,Shaanxi Province(2015SD0018)
文摘OBJECTIVE Bisphenol A(BPA)is a commonly used phenolic environmental estrogen that impacts male reproductive system.Cistanchetubulosa(CT)is a traditional Chinese medicine used to boost male sexual activity.It has been proved for increasing the expression of steroidogenic enzyme and remarkable antioxidant activity.This study aimed to investigate the mechanisms behind the possible protective effects of CT against BPA-induced testicular and sperm toxicity in rats.METHODS CT was identified by 5.8sgene sequencing.The major compositions(echinacosideand acteoside)of CT were quantified by HPLC method.CT(200or 400mg·kg-1)or VE(positive control,300mg·kg-1)and BPA(200mg·kg-1)were administered orally(one time per day)to adult male ratsfor 6weeks.The sperm parameters were observed by dark-field microscope;serum hormone levels(FSH,LH and T)were tested by radio immunosorbent;LDH-x activity,redox balance status(content of MDA,GSH,H2O2 and OH-,and activity of SOD)were evaluated using commercial kits;the expression of the key steroidogenic enzymes were evaluated by qRT-PCR,heat map,immunofluorescence and Western blotting.RESULTS The CT treatment reversed BPA-induced abnormal in sperm characteristics,testicular structure and LDH-x activity,as well as normalized serum testosterone.CT increased both mRNA and protein expressions of key steroidogenic enzymes including StAR,CYP11A1,3β-HSD,17β-HSD and CYP17A1,suggesting that CT enhanced sex hormone synthesis.Moreover,the remarkable antioxidant effect of CT contributed to its protection against BPA-induced testicular toxicity,which was evidenced by the normalization of testicular,redox markers(MDA,H2O2,OH-and GSH contents,and SOD activity)after CT treatment.CONCLUSION CT effectively attenuated BPA-induced poor sperm quality and testicular toxicity in rats through steroidogenesis and redox pathways.
文摘主题语境:生态保护篇幅:334词建议用时:7分钟1 A study reveals red squirrels are thriving on the Isle of Wight,with sufficient food and habitat to nearly double their estimated 3,500‐strong population—the largest remaining group of the endangered species in southern England.
