Quercetin attenuates cadmium-induced oxidative damage and apoptosis in granulosa cells from chicken ovarian follicles.
The attenuating effect of quercetin on cadmium-induced oxidative damage and apoptosis was investigated in cultured granulosa cells from chicken ovarian follicles. Results showed that exposure to 5 μM CdCl(2) induced a decrease in granulosa cell number and viability, caused chromatin condensation and DNA fragmentation. Moreover, cadmium treatment markedly increased malondialdehyde level and decreased glutathione peroxidase and superoxide dismutase activities. Furthermore, cadmium provoked higher BAX expression, inhibited expression of BCL2 and X-linked inhibitor of apoptosis protein (XIAP) and activated caspase-3. However, simultaneous supplementation with 1 μg/ml quercetin protected granulosa cells against cadmium-induced cytotoxicity through attenuating lipid peroxidation, renewing antioxidant enzymes activities and alleviating apoptosis by modulating XIAP, BAX and BCL2 expression, and inhibiting caspase-3 activity. Therefore, these results suggested that quercetin, as a widely distributed dietary antioxidant, contributes potentially to prevent cadmium-induced cytotoxicity in granulosa cells through attenuating lipid peroxidation, elevating intracellular antioxidant status and inhibiting apoptosis to ensure reproductive health.
Key Laboratory of Animal Epidemic Etiology & Immunological Prevention of the Ministry of Agriculture, Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, No. 268 Kaixuan Road, Hangzhou 310029, PR China.
Yudong
Y
Jia
Jinxing
J
Lin
Yuling
Y
Mi
Caiqiao
C
Zhang
D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D019256:Cadmium Chloride / Q000633:toxicity*; D053148:Caspase 3 / Q000378:metabolism; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D002645:Chickens; D019610:Cytoprotection; D004305:Dose-Response Relationship, Drug; D005260:Female; D005434:Flow Cytometry; D005979:Glutathione Peroxidase / Q000378:metabolism; D006107:Granulosa Cells / Q000187:drug effects* / Q000473:pathology; D020287:In Situ Nick-End Labeling; D008315:Malondialdehyde / Q000378:metabolism; D006080:Ovarian Follicle / Q000187:drug effects* / Q000473:pathology; D018384:Oxidative Stress / Q000187:drug effects*; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000378:metabolism; D011794:Quercetin / Q000494:pharmacology*; D013482:Superoxide Dismutase / Q000378:metabolism; D051636:X-Linked Inhibitor of Apoptosis Protein / Q000378:metabolism; D051028:bcl-2-Associated X Protein / Q000378:metabolism
D000975:Antioxidants; D019253:Proto-Oncogene Proteins c-bcl-2; D051636:X-Linked Inhibitor of Apoptosis Protein; D051028:bcl-2-Associated X Protein; D008315:Malondialdehyde; D011794:Quercetin; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D053148:Caspase 3; D019256:Cadmium Chloride