1.Research on mechanisms of oxidative stress in ovarian dysfunction
Yuan LI ; Yisha ZHANG ; Dian YOU ; Kaiwen TONG ; Yingying XIANG ; Yichen CHEN ; Yiwen PEI ; Ting ZHANG
Acta Laboratorium Animalis Scientia Sinica 2024;32(12):1606-1615
Age-related ovarian aging is significantly influenced by oxidative stress,which has intricate underlying mechanisms.Studies conducted recently have demonstrated that oxidative stress is a mediator of several pathological processes that lead to ovarian dysfunction in aging.These processes include telomere shortening,chronic inflammation,apoptosis,and mitochondrial dysfunction.Under oxidative stress,antioxidant treatment can assist in enhancing ovarian function.
2.Research on mechanisms of oxidative stress in ovarian dysfunction
Yuan LI ; Yisha ZHANG ; Dian YOU ; Kaiwen TONG ; Yingying XIANG ; Yichen CHEN ; Yiwen PEI ; Ting ZHANG
Acta Laboratorium Animalis Scientia Sinica 2024;32(12):1606-1615
Age-related ovarian aging is significantly influenced by oxidative stress,which has intricate underlying mechanisms.Studies conducted recently have demonstrated that oxidative stress is a mediator of several pathological processes that lead to ovarian dysfunction in aging.These processes include telomere shortening,chronic inflammation,apoptosis,and mitochondrial dysfunction.Under oxidative stress,antioxidant treatment can assist in enhancing ovarian function.
3.Areca catechu L.ameliorates chronic unpredictable mil stress-induced depression behavior in rats by the promotion of the BDNF signaling pathway
Caihong YAO ; Yiwen ZHANG ; Xinran SUN ; Haiyue PEI ; Shanshan WEI ; Mengdi WANG ; Qi CHANG ; Xinmin LIU ; Ning JIANG
Chinese Journal of Pharmacology and Toxicology 2023;37(7):523-523
OBJECTIVE To investigated the anti-de-pressant effects of the fruit Areca catechu L.(ACL)and elucidated its potential underlying mechanism using a rat model of chronic unpredictable mild stress(CUMS).METHODS CUMS was induced in rats to establish a depression animal model for 28 d.According to the baseline sucrose preference,the male rats were divided into six different groups.They were treated with parox-etine hydrochloride,ACL,and water once a day until the behavioral tests were performed.The levels of corticoste-rone(CORT),malondialdehyde(MDA),catalase(CAT),and total superoxide dismutase(T-SOD)in serum were de-tected using a commercial kit,and the concentrations of 5-hydroxytryptamine(5-HT)and dopamine(DA)mono-amine neurotransmitters in the brain tissues were detect-ed by liquid chromatography-tandem mass spectrometry.Doublecortin(DCX)expression in the hippocampal den-tate gyrus(DG)was determined by immunofluorescence,and the relative abundance of brain-derived neurotrophic factor(BDNF),TrkB,PI3K,p-Akt/Akt,PSD-95,and p-GSK-3β/GSK-3β of brain tissues were assayed by West-ern blotting.RESULTS ACL markedly increased sucrose preference,decreased the immobility time,and short-ened the feeding latency of CUMS-induced rats.CUMS induction resulted in marked changes in the contents of the monoamine neurotransmitters(5-HT and DA)in the hippocampus and cortex of brain tissues and the levels of CORT,MDA,CAT,and T-SOD in serum,whereas ACL administration alleviated these considerable changes.ACL promoted DCX expression in DG and increased the protein levels of BDNF,TrkB,PI3K,p-Akt/Akt,PSD-95,and p-GSK-3β/GSK-3β in the brains of CUMS-induced rats.CONCLUSION Our results indicated that ACL may improve depression-like behaviors in CUMS-induced rats by decreasing the hyperfunction and oxidative stress of the hypothalamic-pituitary-adrenal axis,stimulating hippo-campal neurogenesis,and activating the BDNF signaling pathway.

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