Objective:To investigate the length of time required to resolve COVID-19 effects on semen quality and DNA integrity.Methods:A prospective cohort study was conducted among 42 men who tested positive for SARS-CoV-2 and ...Objective:To investigate the length of time required to resolve COVID-19 effects on semen quality and DNA integrity.Methods:A prospective cohort study was conducted among 42 men who tested positive for SARS-CoV-2 and underwent semen analysis at baseline and four months’post-recovery.Semen samples were collected and evaluated for macroscopic and microscopic parameters,sperm chromatin maturation,and DNA fragmentation.Results:The mean age of participants was 37(±7)years,and 14%had normozoospermia at baseline.After a four-month recovery from COVID-19,48%of patients had normozoospermia.Sperm count,motility,and morphology increased significantly,while sperm DNA fragmentation and sperm chromatin maturation decreased significantly post-recovery from COVID-19.Conclusions:Sperm parameters improve after a four-month recovery from COVID-19.The findings indicate significant improvements in sperm count,motility,morphology,DNA fragmentation,and chromatin maturation after a four-month recovery period.展开更多
目的探讨TLR-2(Toll like receptor-2)信号途径对新生儿免疫系统在淋巴细胞增殖和调节性T细胞(Treg)扩增方面的影响及其与成人免疫系统的差别。方法应用TLR-2的配体-肽聚糖(PPG)和有丝分裂原-植物凝血素(PHA)刺激胎儿脐带血单核淋巴细胞...目的探讨TLR-2(Toll like receptor-2)信号途径对新生儿免疫系统在淋巴细胞增殖和调节性T细胞(Treg)扩增方面的影响及其与成人免疫系统的差别。方法应用TLR-2的配体-肽聚糖(PPG)和有丝分裂原-植物凝血素(PHA)刺激胎儿脐带血单核淋巴细胞(CBMC)和成人外周血单核淋巴细胞(PBMC),然后采用3H胸腺嘧啶掺入法测淋巴细胞增殖情况及流式细胞技术检测活化T细胞,Treg细胞扩增情况。结果PPG和PHA刺激后,CBMC淋巴细胞总体明显增殖(P<0.05),但PPG的刺激不能使活化T细胞和Treg细胞比例增加(P>0.05)。PPG和PHA刺激后,PBMC淋巴细胞总体明显增殖(P<0.05),且活化T细胞和Treg细胞比例均增加(P<0.05)。此外,PPG诱导的CBMC淋巴细胞增殖强度弱于PBMC(P<0.05)。结论TLR-2信号途径可以诱导新生儿淋巴细胞增殖但活化T细胞和Treg细胞比例不增加,与成人免疫系统的TLR-2信号途径存在差别。展开更多
文摘Objective:To investigate the length of time required to resolve COVID-19 effects on semen quality and DNA integrity.Methods:A prospective cohort study was conducted among 42 men who tested positive for SARS-CoV-2 and underwent semen analysis at baseline and four months’post-recovery.Semen samples were collected and evaluated for macroscopic and microscopic parameters,sperm chromatin maturation,and DNA fragmentation.Results:The mean age of participants was 37(±7)years,and 14%had normozoospermia at baseline.After a four-month recovery from COVID-19,48%of patients had normozoospermia.Sperm count,motility,and morphology increased significantly,while sperm DNA fragmentation and sperm chromatin maturation decreased significantly post-recovery from COVID-19.Conclusions:Sperm parameters improve after a four-month recovery from COVID-19.The findings indicate significant improvements in sperm count,motility,morphology,DNA fragmentation,and chromatin maturation after a four-month recovery period.
文摘目的探讨TLR-2(Toll like receptor-2)信号途径对新生儿免疫系统在淋巴细胞增殖和调节性T细胞(Treg)扩增方面的影响及其与成人免疫系统的差别。方法应用TLR-2的配体-肽聚糖(PPG)和有丝分裂原-植物凝血素(PHA)刺激胎儿脐带血单核淋巴细胞(CBMC)和成人外周血单核淋巴细胞(PBMC),然后采用3H胸腺嘧啶掺入法测淋巴细胞增殖情况及流式细胞技术检测活化T细胞,Treg细胞扩增情况。结果PPG和PHA刺激后,CBMC淋巴细胞总体明显增殖(P<0.05),但PPG的刺激不能使活化T细胞和Treg细胞比例增加(P>0.05)。PPG和PHA刺激后,PBMC淋巴细胞总体明显增殖(P<0.05),且活化T细胞和Treg细胞比例均增加(P<0.05)。此外,PPG诱导的CBMC淋巴细胞增殖强度弱于PBMC(P<0.05)。结论TLR-2信号途径可以诱导新生儿淋巴细胞增殖但活化T细胞和Treg细胞比例不增加,与成人免疫系统的TLR-2信号途径存在差别。