Bisphenol A induces testicular oxidative stress in mice leading to ferroptosis / 亚洲男科学杂志(英文版)

Bisphenol A is a common environmental factor and endocrine disruptor that exerts a negative impact on male reproductive ability. By exploring bisphenol A-induced testicular cell death using the Institute of Cancer Research (ICR) mouse model, we found that a ferroptosis phenomenon may exist. Mice were divided into six groups and administered different doses of bisphenol A via intragastric gavage once daily for 45 consecutive days. Serum was then collected to determine the levels of superoxide dismutase and malondialdehyde. Epididymal sperm was also collected for semen analysis, and testicular tissue was collected for ferritin content determination, electron microscope observation of mitochondrial morphology, immunohistochemistry, real-time quantitative polymerase chain reaction, and western blot analysis. Exposure to bisphenol A was found to decrease sperm quality and cause oxidative damage, iron accumulation, and mitochondrial damage in the testes of mice. In addition, bisphenol A was confirmed to affect the expression of the ferroptosis-related genes, glutathione peroxidase 4 (GPX4), ferritin heavy chain 1 (FTH1), cyclooxygenase 2 (COX2), and acyl-CoA synthetase 4 (ACSL4) in mouse testicular tissues. Accordingly, we speculate that bisphenol A induces oxidative stress, which leads to the ferroptosis of testicular cells. Overall, the inhibition of ferroptosis may be a potential strategy to reduce male reproductive toxicity caused by bisphenol A.

Efficacy of severe intrauterine adhesions / 医学研究生学报

ObjectiveTo investigate the effect of COOK balloon placement time on the efficacy of severe intrauterine adhesions.Methods150 patients with severe IUA were prospectively enrolled and randomized divided into three short-term group, medium-term group and long-term group, with respectively balloon placement time 1 week, 1 month and 2 months. All subjects underwent transcervical resection of adhesion (TCRA). Re-adhesion and pregnancy rate after treatment, the relevant infection indicators, uterine cavity recovery, AFS score improvement rate, menstrual improvement, and endometrial thickness were analyzed.ResultsAll patients underwent transcervical resection of adhesion (TCRA) and COOK balloon placement successfully. Improvement of pregnancy rate and first pregnancy time were observed in group B and C than group A (P0.05).ConclusionPlacement of the uterine COOK balloon for more than 1 month may improve uterine cavity, pregnancy rate, AFS score, menstruation and endometrial thickness. However, the risk of infection increased at the second month after COOK balloon placement.

Efficacy of severe intrauterine adhesions / 医学研究生学报

ObjectiveTo investigate the effect of COOK balloon placement time on the efficacy of severe intrauterine adhesions.Methods150 patients with severe IUA were prospectively enrolled and randomized divided into three short-term group, medium-term group and long-term group, with respectively balloon placement time 1 week, 1 month and 2 months. All subjects underwent transcervical resection of adhesion (TCRA). Re-adhesion and pregnancy rate after treatment, the relevant infection indicators, uterine cavity recovery, AFS score improvement rate, menstrual improvement, and endometrial thickness were analyzed.ResultsAll patients underwent transcervical resection of adhesion (TCRA) and COOK balloon placement successfully. Improvement of pregnancy rate and first pregnancy time were observed in group B and C than group A (P0.05).ConclusionPlacement of the uterine COOK balloon for more than 1 month may improve uterine cavity, pregnancy rate, AFS score, menstruation and endometrial thickness. However, the risk of infection increased at the second month after COOK balloon placement.

Expression of osteopontin in central nervous system leukemia and its clinical significance / 中国实验血液学杂志

This study was aimed to investigate the expression of osteopontin (OPN) in central nervous system leukemia (CNSL) and to understand its clinical significance. The expression level of OPN in serum of 62 pediatric patients (22 cases of CNSL, 20 cases of acute leukemia without extramedullary infiltration and 20 cases of nontumor patients) and 19 cases of CNSL with complete remission (CR)were assayed by ELISA; the expression changes of OPN mRNA in bone marrow of the CNSL patients were detected by RT-PCR. The results indicated that the serum OPN level was significantly higher in CNSL group (25.21 ± 6.87 ng/ml) than that in acute leukemia group (13.24 ± 2.73 ng/ml) (P < 0.001) and nontumorous group (3.14 ± 1.60 ng/ml) (P < 0.001); the serum OPN level (4.35 ± 1.50 ng/ml) in CNSL group with CR decreased obviously (P < 0.001) after therapy; RT-PCR analysis showed that the expression of OPN mRNA was higher in CNSL group as compared with other two groups (P < 0.01). It is concluded that the OPN expression may play a role in central nervous system infiltration of leukemia, the mechanism of which remains to need further clinical exploration.