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性周期

性周期的相关文献在1978年到2022年内共计131篇,主要集中在畜牧、动物医学、狩猎、蚕、蜂、基础医学、动物学 等领域,其中期刊论文106篇、会议论文1篇、专利文献15372篇;相关期刊92种,包括股市动态分析、四川动物、水生生物学报等; 相关会议1种,包括中国中医药学会建会20周年学术年会等;性周期的相关文献由302位作者贡献,包括朱建行、胡家兵、李英彪等。

性周期—发文量

期刊论文>

论文:106 占比:0.68%

会议论文>

论文:1 占比:0.01%

专利文献>

论文:15372 占比:99.31%

总计:15479篇

性周期—发文趋势图

性周期

-研究学者

  • 朱建行
  • 胡家兵
  • 李英彪
  • 王桢
  • 王铁柱
  • 郭剑波
  • 马士聪
  • 张俭
  • 张艳
  • 郭泽仁
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 翁钰; 王琴; 赵玉芬; 于凯; 郝绍瑜; 于泊洋; 杜晨光; 苏布登格日勒; 李海军
    • 摘要: 【目的】鉴于在多囊卵巢综合征(polycystic ovary syndrome,PCOS)发病机理和治疗方式上的诸多争议,以及使用人类PCOS材料进行研究的局限性,本研究通过构建PCOS小鼠模型以探究在模型构建过程中性激素水平的变化规律。【方法】皮下注射脱氢表雄酮(dehydroepiandrosterone,DHEA)诱导昆明白雌鼠产生PCOS样临床症状,通过结晶紫染色查看小鼠性周期是否发生停滞;利用HE染色的方式确定卵巢发育状况;利用ELISA技术调查建模过程中血清睾酮和雌二醇浓度的变化规律。【结果】使用结晶紫对小鼠阴道上皮细胞染色可准确区分小鼠各个性周期阶段;使用6 mg/100 g DHEA持续诱导20 d后,昆明白小鼠性周期循环发生了一定的停滞,且在建模过程中体重变化与芝麻油溶剂的加入呈显著相关(P<0.05),与DHEA处理无关;DHEA连续处理后可见卵巢中巨大囊状卵泡出现,血清睾酮水平出现显著升高(P<0.05);自PCOS模型构建的第5天起,血清睾酮水平显著上升(P<0.05),且维持到建模结束;而血清雌二醇水平出现了阶段性变化,在第10、15天均显著高于对照组(P<0.05),第20天时低于对照组。【结论】改进DHEA溶解方式可成功构建昆明白小鼠PCOS模型,在建模过程中血清睾酮持续处于较高水平,而雌二醇水平呈现先增高后降低的趋势,后者在建模中期瞬时升高的病理意义需进一步研究。
    • 叶廷龙; 陈佐龙; 张泽南
    • 摘要: 房中术作为古代四大方技之一,虽然夹杂封建思想的糟粕,但其主流思想是健康的,虽不能"飞升"但可"养生",虽不能"长生不老"但可"夫妻长乐".近代性医学研究因《人类性反应》的出版取得了长足进步,两者理论体系虽然不同,但是很多地方异曲同工,笔者以《人类性反应》所提出的性周期为纲,将所收集文献重新编排顺序整理,浅谈房中著述在各阶段的指导应用.
    • 翟静旭; 刘媛媛; 孙灿; 郝澎丽; 刘亚玲
    • 摘要: Objective To investigate the expression of aromatase and estrogen receptors α(ERα),β(ERβ), GPR30 in the lumbar spinal cord of mouse.Method By Western blot ,the expression of aromatase and estrogen receptors α,β, GPR30 in the lumbar spinal cord were investigated at different stages of estrus cycle.Results The expressions of aromatase in the lumbar spinal cord during the stage of proestrus ,estrus ,metestrus and diestrus were 0.62, 0.63, 0.67, 0.74;there was no significant difference between them(P=0.075). The estrogen receptorα expressed in the lumbar spinal cord during the stage of the estrus cycle were 0.34, 0.54, 0.39, 0.35.They were no statistically significant difference(P=0.065). The expressions of estrogen receptor βin the lumbar spinal cord during the stage of proestrus ,estrus ,metestrus and diestrus were 0.6, 0.62, 0.61, 0.70 .We found no significant difference between them(P=0.654).Moreover, the estrogen receptor GPR30 expressed in the lumbar spinal cord during the stage of the estrus cycle were 0.76, 0.75, 0.80, 0.92. They were no statistically significant difference(P=0.123). Conclusion The physiological levels and cyclic changes of circulating estrogen do not influence the expression of aromatase and estrogen receptor α,β,GPR30 in the spinal cord of mouse.%目的:比较小鼠性周期各阶段脊髓腰段芳香化酶和三种雌激素受体的变化。方法应用Western blot方法观察小鼠性周期不同阶段脊髓腰段:动情前期(P期)、动情期(E期)、动情后期(M期)、动情间期(D期)脊髓腰段芳香化酶和雌激素受体α(ERα)、β(ERβ)和GPR30表达量的变化。结果芳香化酶的表达在P期、E期、M期及D期分别为0.62,0.63,0.67,0.74,差异无统计学意义(P=0.075);ERα在P期、E期、M期及D期的表达分别为0.34,0.54,0.39,0.35,差异无统计学意义(P=0.065);ERβ在P期、E期、M期及D期的表达分别为0.6,0.62,0.61,0.70,差异无统计学意义(P=0.654);GPR30在P期、E期、M期及D期的表达分别为0.76,0.75,0.80,0.92,差异无统计学意义(P=0.123)。结论循环系统雌激素水平的生理性波动对脊髓腰段芳香化酶和雌激素受体α、β和GPR30含量无明显影响。
    • 闫浩; 苏宝锋; 常玉梅; 孙博; 尚梅; 张立民; 梁利群
    • 摘要: 采用组织切片技术对滩头雅罗鱼(Tribolodon brandti)性腺结构、弱碱和淡水性腺发育、产卵时间及类型进行了研究.滩头雅罗鱼精巢为典型的小叶型结构,共可分为6个时期.按照卵巢外形特征和生殖细胞类型,卵巢可分为6个发育时期,对应卵细胞6个时相.研究表明,性成熟的滩头雅罗鱼在9月末性腺发育到第Ⅲ期,并以Ⅲ期越冬.而未达到性成熟的幼鱼(2+龄)性腺发育到Ⅱ期,并以Ⅱ期越冬.性成熟的雄鱼在4月末或5月初性腺发育到第Ⅴ期,雌鱼在5月中下旬或6月初才能发育到第Ⅴ期,雄鱼性腺发育快于雌鱼.2~3龄个体在淡水或弱碱水环境中养殖,性腺发育时相并无明显区别.弱碱水2+龄群体体重显著高于淡水同龄群体,然而3+龄群体在弱碱水和淡水中体重没有显著差异.同时,弱碱水和淡水中的同龄雌、雄之间体重变化存在差异.在性腺发育周期中,雌、雄的平均肥满度在1.313~1.697之间波动.随性周期变化,雄性从II期开始性腺指数显著上升;雌性性腺指数在不同发育时期都存在显著差异,在V期最大为14.22.滩头雅罗鱼性腺发育高峰期一年只出现一次,为一次性产卵类型.%Using the histological methods, the gonadal development, structures of gonad, spawning time and type of reproduction in Tribolodon brandti were studied. The testes of T. brandti have typical lobular structures, and can be divided into six developmental sta-ges. According to the characteristics of the ovaries and the types of ovarian germ cells, the oogenesis process can also be divided into six developmental stages. The microscopic observation showed that the gonadal development of sexual mature T. brandti differentiated to stage III at the end of September, and stayed at the phase III in the winter period. While the gonadal development of immature ju-veniles age 2 + was at the phaseⅡand remained such stage during the winter period. In the late April and early May, gonadal develop-ment of sexual mature males differentiated to the phase V, but in the females it was until late May or early June that they reached to the developmental phase V. Taken together, gonadal development of the males was faster than that of the females. No significant difference was observed in the gonad development of 2-3-year-old juvenile cultured in either fresh water or weak alkali water environment. The body weight 2 + -year-old group in the weak alkali water were significantly higher than that in the fresh water, but no significant difference was found between 3 + -year-old groups reared in weak alkali environment and those in fresh water. Meanwhile, significant differences of body weight existed between females and males in the weak alkali as well as in the fresh water. In the gonad development cycle, the average condition factor of female and male ranged from 1. 313 to 1. 697. During the sexual cycle, the male gonad index be-gan to rise significantly from the II period, while the female gonad index was significantly different among development periods, with the peak value of 14. 22 in the period of V. The conclusion could be drawn that the gonadal development peak of T. brandti appears only once a year, the ovary is partial synchronic, and this species is iteroparous.
    • 沈向华; 潘登; 范奎奎; 李强; 李婷; 杜晨光
    • 摘要: As the specific energy regulator,the function of ghrelin was widely studied in the energy metabolism and reproduction regulation,but its exact regulatory mechanism in the estrous cycle of mice has still not been elucidated.In this study,by intraperitoneal injection of ghrelin to mice,we investigated its effect on feed intake and serum estradiol concentrations (competitive immunoassay electrochemistry luminescence detection) of mice during different stages of estrous cycle,the co-localization between estrogen receptor α (ERα) and ghrelin which existed in arcuate nucleus (ARC) were also studied by immunofluorescence.In the results,ghrelin (50 μg · kg-1)enhanced the feed intake of mice in protesters,in two hours post injection (P<0.05);ghrelin suppressed the concentration of estrogen in serum (P<0.01),and there was no significant change in other estrous cycle.Moreover,ghrelin enhanced mice neuron activation (P<0.05 or P<0.01),and ghrelin directly act on ERα neuron in ARC nucleus in whole estrous cycle,and highest co-expression rate was occurred in the proestrus.Thus,we hypothesis that ghrelin has the ability to direct acting on ERα neurons in mice hypothalamus to effect on the concentration of estrogen in serum,and finally mediate mice food behavior in mice protesters.%Ghrelin作为一种具有特殊功能的能量调控因子,在能量代谢平衡以及生殖调控研究中被广泛关注,然而其在小鼠性周期变化过程中发挥调控的机制尚不明确.本研究通过腹腔注射ghrelin研究其对小鼠性周期不同阶段采食量及血清中雌二醇浓度的影响,并运用免疫荧光技术鉴定了ghrelin与弓状核(arcuate nucleus,ARC)区域分布的α型雌二醇受体(estrogen receptor α,ERα)神经元之间的共表达情况.结果表明,ghrelin(50 μg·kg-1)注射后的2h内可显著促进小鼠发情前期采食量(P<0.05);ghrelin可极显著抑制雌激素的分泌(P<0.01),其他阶段未见显著性差异.同时,ghrelin显著增强小鼠各个性周期中ARC区域的神经元活动(P<0.05或P<0.01),均能直接作用于ARC区域ERα神经元,且在发情前期共表达率最高.因此,我们推论小鼠发情前期,腹腔注射ghre-lin可直接作用于下丘脑区域的ERα神经元调控血清中雌二醇浓度,并最终介导雌性小鼠采食.
    • Noah Litberland; Pat Hoffman; 王永康
    • 摘要: 乳用小母牛的初情期可以定义为。由于卵巢上黄体的存在使血液孕酮有一种可测定的增加.而且小母牛活跃地开始其性周期。乳用小母牛是在一定的成熟阶段(45%~50%的成年体重).而不是在某一年龄,达到初情期的。
    • 柳春风
    • 摘要: 奶牛屡配不孕是奶牛在其无生殖疾病、处于性周期情况下,超过两次配孕失败的一种病症,该病症造成了奶牛场繁殖受胎率降低。临床中奶牛的该症状受到多方面的影响,病情也是比较复杂,所以治疗起来成效不显著。部分奶牛在其长期的配孕过程中仍然无法受孕而必须被淘汰,因此给养殖场带来了较大的经济损失。
    • 高胜利
    • 摘要: 临床生产中,通常把持久黄体称作永久黄体或者称为黄体滞留。母牛在分娩结束或者是性周期排卵以后,妊娠黄体或者是发情周期黄体及其功能能够保存很长一段时间而不会消失,所以将其称作持久黄体。持久黄体和妊娠黄体以及发情周期黄体在组织结构和生理作用方面基本上是一样的,
    • 孟祥瑞; 李想; 曲海强; 赵骞
    • 摘要: 小鼠具有体型小、繁殖快、性周期短、产仔数多、饲养管理费用低等优点,是当今世界上研究最详尽的哺乳类实验动物。小鼠中昆明鼠(KM)、NIH、ICR为最常用3个品种。KM小鼠起源于远交系小鼠,于1944年引入云南昆明,经过半个多世纪的饲养繁殖,已成为我国目前使用最为广泛的小鼠,是我国独有的远交群实验动物。
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