目的初步研究胰激肽原酶(PK)对精子质量的影响,为改进精子体外保存条件提供参考。方法选择来成都西囡妇科医院行辅助生殖技术治疗的男性患者精液20例,将同一份精液均等地分成3份,并随机分编为A、B、C 3组,每组20例。A组每份加入常规精...目的初步研究胰激肽原酶(PK)对精子质量的影响,为改进精子体外保存条件提供参考。方法选择来成都西囡妇科医院行辅助生殖技术治疗的男性患者精液20例,将同一份精液均等地分成3份,并随机分编为A、B、C 3组,每组20例。A组每份加入常规精子冷冻保护剂,B组加入等量的冷冻保护剂及40 U PK,C组加入等量的冷冻保护剂及80 U PK。检测冷冻前后3组的精子常规参数及精子DNA碎片指数(DFI)。结果 (1)冷冻前3组的前向运动精子百分比呈递增趋势,B、C组与A组比较,差异有统计学意义(P<0.05),复苏后3组差异无统计学意义(P>0.05)。(2)冷冻前3组的精子活动率呈递增趋势,B、C组与A组比较,差异有统计学意义(P<0.05),复苏后3组差异无统计学意义(P>0.05)。(3)冷冻前及复苏后3组的精子DFI差异无统计学意义(P>0.05)。结论 PK有助于提高精子体外保存时的活力,当在常规冷冻保护剂中添加PK时,冷冻复苏后的精子质量有一定改善。展开更多
This study investigated the changes in human umbilical vein endothelial cells (HUVECs) induced by overexpression of endothelial nitric oxide synthase traffic inducer (NOSTRIN) and its role in cellular injury. Reco...This study investigated the changes in human umbilical vein endothelial cells (HUVECs) induced by overexpression of endothelial nitric oxide synthase traffic inducer (NOSTRIN) and its role in cellular injury. Recombinant NOSTRIN-expressing and empty vectors were transfected into cultured HUVECs, and factor Ⅷ-related antigen was examined by using immunohistochemical analysis. Growth curves were generated for both transfected and untransfected cells and these indicated that the prolifera- tive ability of cells overexpressing NOSTRIN was significantly decreased. The expression of NOSTRIN and eNOS proteins was detected by using Western blot analysis, endothelial NOS (eNOS) activity was assayed by using spectrophotometry, and NO2-/NO3- levels were measured usin~ nitrate reductase. Immunohistochemical analysis demonstrated that all groups expressed NOSTRIN in the plasma mem- brane and cytoplasm, and Western blot analysis confirmed that NOSTR1N levels were significantly higher in cells transfected with the NOSTR1N plasmid (P〈0.01). The activity of eNOS and the levels of NO2-/NO3 were significantly decreased in NOSTRIN overexpressing cells as compared with empty vector and untransfected cells (P〈0.01 and P〈0.01, respectively). Morphological and ultrastructural changes were observed under light and electron microscopy, and it was found that NOS- TRIN-overexpressing cells were elongated with deformities of the karyotheca, injury to the plasma membrane, increased lipids in the cytoplasm, and shortened microvilli. This study showed that overex- pression of NOSTRIN had a significant effect on eNOS activity in HUVECs and resulted in significant cellular damage.展开更多
目的:利用母外周血中胎儿有核红细胞结合血清三联筛查及三维超声,建立快速无创性产前诊断唐氏综合征的有效模式。方法:早、中期孕妇共670例,采取血清三联筛查结合三维超声和病史选取唐氏高危孕妇,抽取高危孕妇的外周血,流式细胞术富集...目的:利用母外周血中胎儿有核红细胞结合血清三联筛查及三维超声,建立快速无创性产前诊断唐氏综合征的有效模式。方法:早、中期孕妇共670例,采取血清三联筛查结合三维超声和病史选取唐氏高危孕妇,抽取高危孕妇的外周血,流式细胞术富集母血中的胎儿有核红细胞(Fetal Nucleated Red Blood Cells,FNRBCs);次日进行多重引物原位杂交(muti-primed in situ labeling,multi-PRINS)检测胎儿细胞21号染色体与Y染色体。结果:通过血清三联筛查和三维超声结合病史筛选出高危孕妇24例,高危孕妇在两日内即可确诊,24例中诊断23例染色体正常胎儿,包括男胎12例、女胎11例;诊断1例男性唐氏综合征胎儿。24例标本检测结果和实际胎儿核型符合。结论:血清三联筛查、超声检查结合病史筛选出高危孕妇,然后利用母血中胎儿有核红细胞进行多重引物原位杂交检测细胞染色体,可作为快速、无创性产前诊断唐氏综合征的有效模式,并可为其他胎儿染色体基因异常或者宫内感染的无创性产前诊断提供参考。展开更多
文摘目的初步研究胰激肽原酶(PK)对精子质量的影响,为改进精子体外保存条件提供参考。方法选择来成都西囡妇科医院行辅助生殖技术治疗的男性患者精液20例,将同一份精液均等地分成3份,并随机分编为A、B、C 3组,每组20例。A组每份加入常规精子冷冻保护剂,B组加入等量的冷冻保护剂及40 U PK,C组加入等量的冷冻保护剂及80 U PK。检测冷冻前后3组的精子常规参数及精子DNA碎片指数(DFI)。结果 (1)冷冻前3组的前向运动精子百分比呈递增趋势,B、C组与A组比较,差异有统计学意义(P<0.05),复苏后3组差异无统计学意义(P>0.05)。(2)冷冻前3组的精子活动率呈递增趋势,B、C组与A组比较,差异有统计学意义(P<0.05),复苏后3组差异无统计学意义(P>0.05)。(3)冷冻前及复苏后3组的精子DFI差异无统计学意义(P>0.05)。结论 PK有助于提高精子体外保存时的活力,当在常规冷冻保护剂中添加PK时,冷冻复苏后的精子质量有一定改善。
文摘This study investigated the changes in human umbilical vein endothelial cells (HUVECs) induced by overexpression of endothelial nitric oxide synthase traffic inducer (NOSTRIN) and its role in cellular injury. Recombinant NOSTRIN-expressing and empty vectors were transfected into cultured HUVECs, and factor Ⅷ-related antigen was examined by using immunohistochemical analysis. Growth curves were generated for both transfected and untransfected cells and these indicated that the prolifera- tive ability of cells overexpressing NOSTRIN was significantly decreased. The expression of NOSTRIN and eNOS proteins was detected by using Western blot analysis, endothelial NOS (eNOS) activity was assayed by using spectrophotometry, and NO2-/NO3- levels were measured usin~ nitrate reductase. Immunohistochemical analysis demonstrated that all groups expressed NOSTRIN in the plasma mem- brane and cytoplasm, and Western blot analysis confirmed that NOSTR1N levels were significantly higher in cells transfected with the NOSTR1N plasmid (P〈0.01). The activity of eNOS and the levels of NO2-/NO3 were significantly decreased in NOSTRIN overexpressing cells as compared with empty vector and untransfected cells (P〈0.01 and P〈0.01, respectively). Morphological and ultrastructural changes were observed under light and electron microscopy, and it was found that NOS- TRIN-overexpressing cells were elongated with deformities of the karyotheca, injury to the plasma membrane, increased lipids in the cytoplasm, and shortened microvilli. This study showed that overex- pression of NOSTRIN had a significant effect on eNOS activity in HUVECs and resulted in significant cellular damage.
文摘目的:利用母外周血中胎儿有核红细胞结合血清三联筛查及三维超声,建立快速无创性产前诊断唐氏综合征的有效模式。方法:早、中期孕妇共670例,采取血清三联筛查结合三维超声和病史选取唐氏高危孕妇,抽取高危孕妇的外周血,流式细胞术富集母血中的胎儿有核红细胞(Fetal Nucleated Red Blood Cells,FNRBCs);次日进行多重引物原位杂交(muti-primed in situ labeling,multi-PRINS)检测胎儿细胞21号染色体与Y染色体。结果:通过血清三联筛查和三维超声结合病史筛选出高危孕妇24例,高危孕妇在两日内即可确诊,24例中诊断23例染色体正常胎儿,包括男胎12例、女胎11例;诊断1例男性唐氏综合征胎儿。24例标本检测结果和实际胎儿核型符合。结论:血清三联筛查、超声检查结合病史筛选出高危孕妇,然后利用母血中胎儿有核红细胞进行多重引物原位杂交检测细胞染色体,可作为快速、无创性产前诊断唐氏综合征的有效模式,并可为其他胎儿染色体基因异常或者宫内感染的无创性产前诊断提供参考。