期刊文献+
共找到8篇文章
< 1 >
每页显示 20 50 100
大黄鱼性早熟问题的研究I.网箱养殖鱼性腺发育状况 被引量:16
1
作者 方永强 翁幼竹 +3 位作者 周晶 刘家富 谢芳靖 陈慧娟 《台湾海峡》 CAS CSCD 2000年第3期354-359,共6页
用组织学方法研究了网箱养殖大黄鱼性腺发育的状况。结果表明 ,在所研究的 10个网箱 (养殖期 1a)中 ,其中 6个网箱各有少数大黄鱼卵巢进入大生长期 ,卵母细胞胞质出现卵黄颗粒 ,其余网箱大黄鱼处于小生长期。在雄性 ,全部网箱大黄鱼精... 用组织学方法研究了网箱养殖大黄鱼性腺发育的状况。结果表明 ,在所研究的 10个网箱 (养殖期 1a)中 ,其中 6个网箱各有少数大黄鱼卵巢进入大生长期 ,卵母细胞胞质出现卵黄颗粒 ,其余网箱大黄鱼处于小生长期。在雄性 ,全部网箱大黄鱼精巢发育进入Ⅲ~Ⅳ期。根据这些结果 ,我们认为 ,在夏季 7、8月间可能有50 %~ 60 %雌性和 60 %~ 70 %雄性提早性腺成熟。 展开更多
关键词 大黄鱼 卵巢 精巢 组织学 性早熟 网箱养殖 发育
下载PDF
垂体降调节方案的比较 被引量:1
2
作者 黄孙兴 周灿权 《生殖医学杂志》 CAS 2012年第6期524-528,共5页
垂体降调节是辅助生殖技术(ART)的促排卵治疗发展过程中一个重要的里程。它一方面明显地改善了ART的效果,另一方面也促进了对相关生殖生理的基础研究。回顾垂体降调节的应用的历史,垂体降调节方案的确立以及推广应用经历了效果与安... 垂体降调节是辅助生殖技术(ART)的促排卵治疗发展过程中一个重要的里程。它一方面明显地改善了ART的效果,另一方面也促进了对相关生殖生理的基础研究。回顾垂体降调节的应用的历史,垂体降调节方案的确立以及推广应用经历了效果与安全性评估的考验。在经历近二十年的发展后,一些被认为可行而且临床效果肯定的方案得以广泛推广,这些方案被认为是降调节的经典方案。对经典的温故比较,可以进一步理解降调节的生理,为建立个体化的降调节方案提供理论基础以及相关的临床应用经验。 展开更多
关键词 调节方案 促性腺激素释放激素类似物 垂体 体外受精 辅助生殖 生殖生理 基础研究 临床效果
下载PDF
利用烯丙孕素使授精未孕母猪重返预定的配种方案 被引量:3
3
作者 张贤群 Johannes Kauffold 《国外畜牧学(猪与禽)》 2008年第1期41-44,共4页
为研究烯丙孕素、马绒毛膜促性腺激素(eCG)和人绒毛膜促性腺激素(hCG)或促性腺激素释放激素类似物(GnRH-A)D-Phe6-LHRH在促使诊断为未孕的高胎龄母猪同步发情同步排卵以使其重返预定的人工授精方案中的作用,特进行了一项现场研究。试验... 为研究烯丙孕素、马绒毛膜促性腺激素(eCG)和人绒毛膜促性腺激素(hCG)或促性腺激素释放激素类似物(GnRH-A)D-Phe6-LHRH在促使诊断为未孕的高胎龄母猪同步发情同步排卵以使其重返预定的人工授精方案中的作用,特进行了一项现场研究。试验选用531头在人工授精后第21~35天期间经超声波检查确诊为未孕的母猪,并随机分入3个试验组:⑴试验Ⅰ组(EGⅠ):每头母猪按16mg/d的剂量连续15d口服烯丙孕素以阻止滤泡的生长,停服24h后肌肉注射1000IU马绒毛膜促性腺激素以刺激卵泡生长,78~80h后再肌肉注射500IU人绒毛膜促性腺激素以诱导排卵;⑵试验Ⅱ组(EGⅡ):除将烯丙孕素的剂量由16mg改为20mg和马绒毛膜促性腺激素剂量由1000IU改为800IU以外,其它与试验Ⅰ组相似;⑶试验Ⅲ组(EGⅢ):除用50μg促性腺激素释放激素类似物D-Phe6-LHRH替代500IU人绒毛膜促性腺激素来诱导排卵外,其它均与试验Ⅱ组相似。试验母猪分别在注射eCG/D-Phe6-LHRH后16h和40h各进行一次人工授精,并利用超声波扫描仪检查卵巢情况以确诊激素处理是否获得成功。记录母猪的受孕率、分娩率、总产仔数和活产仔数,并与同步发情首次配种的母猪比较。试验母猪在激素处理前卵巢结构各不相同,烯丙孕素的两种口服剂量都能使80%以上的母猪卵巢卵泡生长得到阻止,不过口服16mg/d的烯丙孕素会提高多囊卵巢变性的发生率。4%~18%的母猪经烯丙孕素处理后其卵巢中仍存在黄体,大多数母猪在2次人工授精之间或第2次人工授精之后排卵(P<0.05)。注射促性腺激素释放激素类似物(GnRH-A)D-Phe6-LHRH的母猪排卵往往早于注射人绒毛膜促性腺激素的母猪。被诊断为未怀孕的母猪受孕率和分娩率比初次交配母猪低25%(P<0.05)。在诊断为未孕的母猪中,注射促性腺激素释放激素类似物(GnRH-A)D-Phe6-LHRH的母猪受孕率较高(P<0.05),但在总产仔数和活产仔数上各试验组间无显著差异。总之,给诊断为未孕的母猪口服20mg烯丙孕素,然后肌注800IU马绒毛膜促性腺激素和50μg促性腺激素释放激素类似物D-Phe6-LHRH是诱使其同步发情和同步排卵的最佳方法,至于母猪口服烯丙孕素的时间是否一个较长的18d间隔还有待进一步的研究。 展开更多
关键词 人工授精 促性腺激素释放激素类似物 人绒毛膜促性腺激素 母猪 配种 预定 超声波检查 肌肉注射
下载PDF
几种奶牛繁殖疾病的治疗方法
4
作者 季大平 《北方牧业》 2009年第19期25-25,共1页
1卵巢囊肿 1.1促性腺激素释放激素类似物奶牛每次肌肉注射400~600微克,每日一次,可连续1~4次,但总量不得超过3000微克。一般在用药后15~20天内,囊肿逐渐消失而恢复正常发情。
关键词 繁殖疾病 促性腺激素释放激素类似物 奶牛 治疗 卵巢囊肿 肌肉注射 发情
下载PDF
Gonadotropin-releasing hormone agonists cotreatment during chemotherapy in borderline ovarian tumor and ovarian cancer patients 被引量:10
5
作者 ZHU Hong-lan WANG Yan LI Xiao-ping WANG Chao-hua WANG Yue CUI Heng WANG Jian-liu WEI Li-hui 《Chinese Medical Journal》 SCIE CAS CSCD 2013年第4期688-691,共4页
Background Recently, conservative surgery is acceptable in young patients with borderline ovarian tumor and ovarian cancer. The preservation of these patients' future fertility has been the focus of recent interest. ... Background Recently, conservative surgery is acceptable in young patients with borderline ovarian tumor and ovarian cancer. The preservation of these patients' future fertility has been the focus of recent interest. This study aimed to observe the effect of gonadotropin-releasing hormone agonists (GnRHa) cotreatment during chemotherapy in borderline ovarian tumor and ovarian cancer patients. Methods Sixteen patients who were treated with fertility preservation surgery for borderline ovarian tumor and ovarian cancer and then administered GnRHa during chemotherapy in Peking University People's Hospital from January 2006 to July 2010 were retrospectively analyzed. This group was compared with a control group of 16 women who were treated concurrently with similar chemotherapy (n=5) without GnRHa or were historical controls (n=11). The disease recurrence, the menstruation status and reproductive outcome were followed up and compared between the two groups. Results There were no significant differences between both groups regarding age, body weight, height, marriage status, classification of the tumors, stage of the disease, as were the cumulative doses of each chemotherapeutic agent. One (1/16) patient in the study group while 2 (2/16) patients in the control group relapsed 2 years after conclusion of the primary treatment (P 〉0.05). All of the 16 women in the study group compared with 11 of the 16 patients in the control group resumed normal menses 6 months after the termination of the treatment (P 〈0.05). There were 4 spontaneous pregnancies in the study group while 2 in the control group, all of the neonates were healthy. Conclusions GnRHa administration before and during chemotherapy in borderline ovarian tumor and ovarian cancer patients who had undergone fertility preservation operation may bring up higher rates of spontaneous resumption of menses and a better pregnancy rate. Long-term follow up and large scale clinical studies are required. 展开更多
关键词 gonadotropin-releasing hormone agonists fertility preservation chemotherapy borderline ovarian tumor ovarian cancer
原文传递
Efficacy and Safety of Domestic Leuprorelin in Girls with Idiopathic Central Precocious Puberty: A Multicenter,Randomized, Parallel, Controlled Trial 被引量:2
6
作者 Wen-Jing Li Chun-Xiu Gong +13 位作者 Mei-Jie Guo Jie Xing Tang Li Wen-Hui Song Xiao-Ping Luo Di Wu Jian-Ping Liang Bing-Yan Cao Yi Gu Chang Su Xue-Jun Liang Min Liu Rui Wang Feng-Ting Li 《Chinese Medical Journal》 SCIE CAS CSCD 2015年第10期1314-1320,共7页
Background:In central precocious puberty (CPP),the pulse secretion and release ofgonadotropin-releasing hormone (GnRH) are increased due to early activation of the hypothalamic-pituitary-gonadal axis,resulting in... Background:In central precocious puberty (CPP),the pulse secretion and release ofgonadotropin-releasing hormone (GnRH) are increased due to early activation of the hypothalamic-pituitary-gonadal axis,resulting in developmental abnormalities with gonadal development and appearance of secondary sexual characteristics.The CPP without organic disease is known as idiopathic CPP (ICPP).The objective of the study was to evaluate the clinical efficacy and safety of domestic leuprorelin (GnRH analog) in girls with ICPP.Methods:A total of 236 girls with ICPP diagnosed from April 2012 to January 2014 were selected and were randomized into two groups.One hundred fifty-seven girls in the test group were treated with domestic leuprorelin acetate,79 girls in the control group were treated with imported leuprorelin acetate.They all were treated and observed for 6 months.After 6-month treatment,the percentage of children with peak luteinizing hormone (LH) ≤3.3 U/L,the percentage of children with peak LH/peak follicle stimulating hormone (FSH) ratio 〈0.6,the improvements of secondary sexual characteristics,gonadal development and sex hormone levels,the change of growth rate of bone age (BA) and growth velocity,and drug adverse effects between two groups were compared.Results:After the treatment,the percentage of children with a suppressed LH response to GnRH,defined as a peak LH ≤3.3 U/L,at 6 months in test and control groups were 96.80% and 96.20%,respectively,and the percentage of children with peak LH/FSH ratio ≤0.6 at 6 months in test and control groups were 93.60% and 93.70%,respectively.The sizes of breast,uterus and ovary of children and the levels of estradiol (E2) were significantly reduced,and the growth rate of BA was also reduced.All the differences between pre-and post-treatment in each group were statistically significant (P 〈 0.05),but the differences of the parameters between two groups were not significant (P 〉 0.05).Conclusions:Domestic leuprorelin is effective and safe in the treatment of Chinese girls with ICPP.Its effectiveness and safety are comparable with imported leuprorelin. 展开更多
关键词 Central Precocious Puberty Gonadotropin-releasing Hormone Analog Idiopathic Central Precocious Puberty LEUPRORELIN
原文传递
Risk of cardiovascular thrombotic events after surgical castration versus gonadotropin-releasing hormone agonists in Chinese men with prostate cancer
7
作者 Jeremy YC Teoh Samson YS Chan +4 位作者 Peter KF Chiu Darren MC Poon Ho-Yuen Cheung Simon SM Hou Chi-Fai Ng 《Asian Journal of Andrology》 SCIE CAS CSCD 2015年第3期493-496,共4页
We investigated the cardiovascular thrombotic risk after surgical castration (SC) versus genadotmpin-releasing hormone agonists (GnRHa) in Chinese men with prostate cancer. All Chinese prostate cancer patients who... We investigated the cardiovascular thrombotic risk after surgical castration (SC) versus genadotmpin-releasing hormone agonists (GnRHa) in Chinese men with prostate cancer. All Chinese prostate cancer patients who were treated with SC or GnRHa from year 2000 to 2009 were reviewed and compared. The primary outcome was any new-onset of cardiovascular thrombotic events after SC or GnRHa, which was defined as any event of acute myocardial infarction or ischemic stroke. The risk of new-onset cardiovascular thrombotic event was compared between the SC group and the GnRHa group using Kaplan-Meier method. Multivariate Cox regression analysis was performed to adjust for other potential confounding factors. A total of 684 Chinese patients was included in our study, including 387 patients in the SC group and 297 patients in the GnRHa group. The mean age in the SC group (75.3 ~ 7.5 years) was significantly higher than the GnRHa group (71.8 ~ 8.3 years) (P 〈 0.001). There was increased risk of new cardiovascular thrombotic events in the SC group when compared to the GnRHa group upon Kaplan-Meier analysis (P= 0.014). Upon multivariate Cox regression analysis, age (hazard ratio [HR] 1.072, 95% confidence interval [CI] 1.04-1.11, P 〈 0.001), hyperlipidemia (HR 2.455, 95% Cl 1.53-3.93, P 〈 0.001), and SC (HR 1.648, 95% CI 1.05-2.59, P = 0.031) were significant risk factors of cardiovascular thrombotic events. In conclusion, SC was associated with increased risk of cardiovascular thrombotic events when compared to GnRHa. This is an important aspect to consider while deciding on the method of androgen deprivation therapy, especially in elderly men with known history of hyperlipidemia. 展开更多
关键词 androgen deprivation therapy Chinese population cardiovascular events myocardial infarction prostate cancer STROKE
原文传递
From bench to bedside: bipolar androgen therapy in a pilot clinical study 被引量:1
8
作者 Qing Zhang Phillip J Gray 《Asian Journal of Andrology》 SCIE CAS CSCD 2015年第5期767-768,共2页
Prostate cancer remains a leading cause of cancer death in Europe andthe United States and is an emerging problem in Asia despite significant improvements in available treatments over the last few decades. Androgen de... Prostate cancer remains a leading cause of cancer death in Europe andthe United States and is an emerging problem in Asia despite significant improvements in available treatments over the last few decades. Androgen deprivation therapy (ADT) has been the core treatment of advance-staged disease since the discovery of prostate cancer's androgen dependence in 1941 by Huggins et al. Options for initial medical treatment include gonadotropin-releasing hormone analogues such as leuprolide (LHRH agonist) and degarelix (LHRH antagonist) and androgen receptor (AR) binding agents such as bicalutamide. Although most patients will initially respond to either surgical or medical castration, there is almost always progression to castration-resistant prostate cancer (CRPC) necessitating treatment with more novel agents. However, even drugs such as abiraterone and enzalutamide, two next-generation agents used commonly in metastatic CRPC, have failed to demonstrate persistent efficacy in most patients. 展开更多
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部