Objective:To investigate the effect of human chorionic gonadotropin (hCG) on the motility of rat sperm and the fertilization rate following in vitro fertilization. Methods: hCG concentrations of 25, 50, 75 and 100 ng/...Objective:To investigate the effect of human chorionic gonadotropin (hCG) on the motility of rat sperm and the fertilization rate following in vitro fertilization. Methods: hCG concentrations of 25, 50, 75 and 100 ng/mL with incubation time of 1 h and 2 h were used in medium to study sperm motility. Then, 25 and 100 ng/mL of hCG with incubation time of 2 h were applied for in vitrofertilization. After 6 h, the number of two pronuclei was counted. Obtained data was subjected to one way ANOVA and Bonferroni-Dun hoc-post test.Results:Total motility and progressive motility of sperms were increased significantly (P<0.05) in hCG experimental group with concentration of 25 ng/L and incubation time of 2 h compared to control group, however, total motility and progressive motility of sperms were decreased significantly (P<0.05) with increasing dose of hCG. Fertilization rate was decreased significantly (P<0.05) in hCG experimental group with dose of 100 ng/mL compared to 25 ng/mL and control group. Conclusions:The effect of hCG on the rat sperm motility and the rate of their fertility is dose-dependent so that hCG with dose of 25 ng/mL leads to an increase in rat sperm motility and to some extent fertilization rate.展开更多
[ Objective] To study the effects of clindamycin on germ cells of male mice. [Method] A total of 48 healthy adult male mice were randomly divided into group A, group B, group C and control group, 12 mice in each group...[ Objective] To study the effects of clindamycin on germ cells of male mice. [Method] A total of 48 healthy adult male mice were randomly divided into group A, group B, group C and control group, 12 mice in each group. The mice in the group A, group B and group C were respectively administrated with clindamycin at doses of 15, 30 and 60 mg/kg.d via intraperitoneai injection, and those in the control group were trea- ted with normal saline. On Day 29 after administration, the mice were killed by dislocation, and the sperm motility rate, sperm deformity rate and the percentage of sperm having swollen tail membrane were determined, respectively. [ Result] The sperm motility rate and the percentage of sperm having swollen tail membrane of the group B and group C were lower than those of the control group; and the sperm deformity rate of the group B and group C was higher than that of the control group. The sperm motility rate, sperm deformity rate and percentage of sperm having swollen tail membrane had no significant difference between the group A and control group. [ Conclusion] The clindamycin at a dose equal to or more than that used for severe infection affects the normal function of sperm in mice.展开更多
文摘Objective:To investigate the effect of human chorionic gonadotropin (hCG) on the motility of rat sperm and the fertilization rate following in vitro fertilization. Methods: hCG concentrations of 25, 50, 75 and 100 ng/mL with incubation time of 1 h and 2 h were used in medium to study sperm motility. Then, 25 and 100 ng/mL of hCG with incubation time of 2 h were applied for in vitrofertilization. After 6 h, the number of two pronuclei was counted. Obtained data was subjected to one way ANOVA and Bonferroni-Dun hoc-post test.Results:Total motility and progressive motility of sperms were increased significantly (P<0.05) in hCG experimental group with concentration of 25 ng/L and incubation time of 2 h compared to control group, however, total motility and progressive motility of sperms were decreased significantly (P<0.05) with increasing dose of hCG. Fertilization rate was decreased significantly (P<0.05) in hCG experimental group with dose of 100 ng/mL compared to 25 ng/mL and control group. Conclusions:The effect of hCG on the rat sperm motility and the rate of their fertility is dose-dependent so that hCG with dose of 25 ng/mL leads to an increase in rat sperm motility and to some extent fertilization rate.
基金supported by the grants from the University Scientific Research Project of Inner Mongolia Autonomous Region (NJzc08159)
文摘[ Objective] To study the effects of clindamycin on germ cells of male mice. [Method] A total of 48 healthy adult male mice were randomly divided into group A, group B, group C and control group, 12 mice in each group. The mice in the group A, group B and group C were respectively administrated with clindamycin at doses of 15, 30 and 60 mg/kg.d via intraperitoneai injection, and those in the control group were trea- ted with normal saline. On Day 29 after administration, the mice were killed by dislocation, and the sperm motility rate, sperm deformity rate and the percentage of sperm having swollen tail membrane were determined, respectively. [ Result] The sperm motility rate and the percentage of sperm having swollen tail membrane of the group B and group C were lower than those of the control group; and the sperm deformity rate of the group B and group C was higher than that of the control group. The sperm motility rate, sperm deformity rate and percentage of sperm having swollen tail membrane had no significant difference between the group A and control group. [ Conclusion] The clindamycin at a dose equal to or more than that used for severe infection affects the normal function of sperm in mice.
文摘本文研究在不同浓度Na+、K+、Ca2+、Mg2+、Cu2+及葡萄糖、果糖溶液中,中华鲟(Acipenser sinensisGray)精子活动情况。结果表明:Na+浓度为2‰时,中华鲟精子寿命时间(Life time,LT)最长,为347s,而Na+浓度为1‰时,中华鲟精子剧烈运动时间(Acute movement time,AT)最长,为98.67s,精子激活率在Na+浓度小于等于2‰时,为100%,随着Na+浓度的增加中华鲟精子激活率明显下降;与Na+溶液不同,在K+浓度为0.005‰时中华鲟精子活力最佳,其AT和LT最长,分别为80s和174s。而精子激活率随K+浓度增加而增强,在浓度为0.005‰时激活率最强为60%,然后快速下降;在Ca2+、Mg2+、Cu2+三种溶液中,随着三种溶液浓度的增加,中华鲟精子剧烈运动时间和寿命逐渐缩短,精子激活率逐步下降;与Ca2+、Mg2+、Cu2+三种溶液完全不同的是,随着葡萄糖和果糖两种单糖浓度的增加,中华鲟精子AT及精子LT逐渐延长。结果说明适量浓度的Na+、K+可以延长中华鲟精子AT及其LT,激活精子活力;而Ca2+、Mg2+、Cu2+三种溶液即使在较低浓度下都表现出对中华鲟精子AT、精子LT及其激活率明显的抑制作用;而葡萄糖和果糖则能有效地延长中华鲟精子AT和LT。