Objective To investigate the effect and mechanism of melatonin in alleviating hypoxia-induced apoptosis in ovarian gra-nulosa cells.Methods Rat ovarian granulosa cells were isolated and divided into normoxic,hypoxic,and melatonin groups.Hypoxia-induced injury models were established in the hypoxic and melatonin groups,and granulosa cells in the melatonin group were treated with melatonin.A total of 24 rats were randomized into the control,model,and intervention groups(n=8 per group).Rat models of declining ovarian function induced by long-term hypoxia were established in the model and intervention groups.The rats in the intervention group were intraperitoneally injected with melatonin.Cell proliferation was measured using a CCK-8 assay,and lactate secretion and HIF-1αprotein with a specific kit,respectively.The levels of estradiol and progesterone in the cell supernatant and rat serum were detected using ELISA.Granulosa cell apoptosis was detected by flow cytometry,ovarian morphology by HE staining,and Bax and caspase-3 expression by Western blotting.Results Compared with the normoxic group,the hypoxic group exhibited decreased granulosa cell proliferation,increased apoptosis,elevated lactate and HIF-1α levels,and reduced estradiol and progesterone levels(P＜0.05).Compared with hypoxic group,these changes were significantly reversed in the molatonin group(P＜0.05).Compared with the control group,the model group showed increased lactate,HIF-1α,Bax,and caspase-3 levels,decreased estradiol and progesterone levels,and reduced follicles.Compared with the model group,all the indicators were ameliorated in the intervention group(P＜0.05).Conclusion Melatonin alleviated hypoxia-induced granulosa cell apoptosis and promoted the recovery of ovarian function.

Objective To investigate the effect and mechanism of melatonin in alleviating hypoxia-induced apoptosis in ovarian gra-nulosa cells.Methods Rat ovarian granulosa cells were isolated and divided into normoxic,hypoxic,and melatonin groups.Hypoxia-induced injury models were established in the hypoxic and melatonin groups,and granulosa cells in the melatonin group were treated with melatonin.A total of 24 rats were randomized into the control,model,and intervention groups(n=8 per group).Rat models of declining ovarian function induced by long-term hypoxia were established in the model and intervention groups.The rats in the intervention group were intraperitoneally injected with melatonin.Cell proliferation was measured using a CCK-8 assay,and lactate secretion and HIF-1αprotein with a specific kit,respectively.The levels of estradiol and progesterone in the cell supernatant and rat serum were detected using ELISA.Granulosa cell apoptosis was detected by flow cytometry,ovarian morphology by HE staining,and Bax and caspase-3 expression by Western blotting.Results Compared with the normoxic group,the hypoxic group exhibited decreased granulosa cell proliferation,increased apoptosis,elevated lactate and HIF-1α levels,and reduced estradiol and progesterone levels(P＜0.05).Compared with hypoxic group,these changes were significantly reversed in the molatonin group(P＜0.05).Compared with the control group,the model group showed increased lactate,HIF-1α,Bax,and caspase-3 levels,decreased estradiol and progesterone levels,and reduced follicles.Compared with the model group,all the indicators were ameliorated in the intervention group(P＜0.05).Conclusion Melatonin alleviated hypoxia-induced granulosa cell apoptosis and promoted the recovery of ovarian function.

Objective To analyze the influencing factors of clinical pregnancy and live birth rates in patients undergoing frozen-thawed embryo transfer(FET)for the first time.Methods The clinical data of 1 458 patients who underwent FET cycle-assisted pregnancy for the first time were retrospectively analyzed and divided into four groups according to clinical pregnancy and live bith outcomes.The clini-cal data were compared to analyze the factors affecting clinical pregnancy and live birth rates in FET cycles that were included in multiple logistic regression analysis.Results Of the 1458 cycles,the clinical pregnancy and live birth rates were 44.0% and 34.0%,respectively.The mean age of the clinical pregnancy and live birth groups was lower than that in non-clinical pregnancy and stillbirth groups(P<0.05).The clinical pregnancy and live birth rates of patients aged<35 years were higher than those aged≥35 years(P<0.05).The clinical preg-nancy and live birth rates of patients with≥8 mm endometrial thickness were higher than those with<8 mm endometrial thickness(P<0.05).The clinical pregnancy rate of natural cycles of endometrial preparation regimen was higher than that of HRT cycles(P<0.05).The clinical pregnancy and live birth rates of double-embryo transfers were higher than that of single-embryo transfers(P<0.05).The clinical pregnancy and live birth rates of blastocyst transfers were higher than those of cleavage stage(P<0.05).Conclusion Age,endometrial thickness,number of transplanted embryos,and embryo morphology were the independent factors influencing clinical pregnancy and live birth outcomes during FET cycle transplantation.

Objective To investigate the effect of resveratrol(RES)on ovarian function in mice and elucidate the potential mechanism involving miR-23a.Methods Thirty mice were randomly divided into control,premature ovarian failure(POF)model,and treatment(RES)groups,with n=10 per group.The body weight and ovarian mass of the mice were measured,and the ovarian index was calculated.Hematoxylin and eosin staining was performed to observe pathological changes in mouse ovarian tissue.Real-time quantitative PCR and Western blotting were performed to measure the mRNA and protein levels of miR-23a,X-linked inhibitor of apoptosis protein(XIAP),and caspase-3 in the ovarian tissue.Results Compared with the control group,the POF group exhibited significant decreases in ovarian mass(P＜0.05),ovarian index(P＜0.05),number of primary follicles,and XIAP mRNA expression(P＜0.05),alongside significant increases in miR-23a and caspase-3 mRNA expression(P＜0.05).Compared with the POF group,the RES group exhibited significant increases in the ovarian mass(P＜0.05),ovarian index(P＜0.05),number of primary follicles,and XIAP mRNA expression(P＜0.05),as well as significant decreases in miR-23a and caspase-3 mRNA expression(P＜0.05).XIAP protein expression was significantly lower and caspase-3 protein expression was significantly higher in the POF group than in the control group(P＜0.05).Conversely,XIAP protein expression was significantly higher and caspase-3 protein expression was significantly lower in the RES group than in the POF group(P＜0.05).Conclusion RES exerts a protective effect on weakened ovarian function in mice,potentially mediated through its effect on miR-23a targeting the XIAP-caspase-3 signaling pathway.

Objective:To explore the application effect of pre-hospital information publicity and education management model in patients with gastrointestinal tumors.Methods:The inpatients with gastrointestinal tumors who made an appointment in the outpatient department of the Affiliated Hospital of Qingdao University were randomly divided into 225 cases in the control group and 226 cases in the experimental group. The control group was treated according to the routine process, the experimental group implemented pre hospital information education and management, and the patients were individually assessed and health education through the official account of WeChat, Heals mobile education system, telephone communication and WeChat group.Results:After the implementation of pre-hospital information management model, the anxiety and depression scores of patients in the experiment group were (55.89 ± 15.53) and (56.19 ± 17.87), which were significantly better than those in the control group, (60.84 ± 15.42) and (62.28 ± 19.67) ( t = 3.40, 3.43, both P<0.01). The awareness rate of admission related knowledge (74% to 93%) and satisfaction with pre-hospital publicity and education management in the experimental group were also higher than control group ( χ2 values were 5.84-20.28, all P<0.05). The hospitalization rate of patients in the experimental group was 91.15%(206/226), which was significantly higher than that in thecontrol group, 81.78%(184/225), the difference was significant ( χ2 = 8.47, P<0.01). The secondary hospitalization rate in the experimental group was 8.41%(19/226), which was significantly lower than that in the control group, 19.11% (43/225)( χ2 = 10.90, P<0.01). Conclusion:The pre-hospital information publicity and education management model can improve the awareness rate of patients′ admission related knowledge, improve patients′ satisfaction with pre hospital publicity and education management, reduce the secondary hospitalization rate and shorten the average preoperative hospital stay, which is worthy of further promotion and application in clinic.