Single nucleotide polymorphisms （SNP） of chicken gonadotropin-releasing hormone receptor （GnRHR） and neuropeptide Y （NPY） were selected to identify the genotypes of Wenchang （Chinese indigenous breed） chicken ...Single nucleotide polymorphisms （SNP） of chicken gonadotropin-releasing hormone receptor （GnRHR） and neuropeptide Y （NPY） were selected to identify the genotypes of Wenchang （Chinese indigenous breed） chicken with restricton fragment length polymorphisms. The associations of the SNPs with the total egg production （NE）, average days of continual laying （ADCL）, and number of double-yolked eggs （DYE） traits were analyzed. The frequency of restriction enzyme A/a alleles in the population was for GnRHR 0.69 （Bpu1102 Ⅰ A） and 0.31 （Bpu1102 Ⅰ a） and for NPY 0.46 （Dra Ⅰ B） and 0.54 （Dra Ⅰ b）. Trait data from a total of 120 hens, which were purebred introduced from Hainan Province, China from one generation were recorded. Two significant effects of genes＇ marker were found： for GnRHR and number of eggs （dominant; t= 2.67, df= 116） and NPY and number of eggs （additive; t= 1.97, df= 116）. The current research supports the effects of GnRHR and NPY genes on egg-laying traits of chickens.展开更多
[ Objective] To locate gonadotropin-releasing hormone （GnRH） in pituitary of Guangxi swamp buffaloes and to provide a theoretical ba- sis for cloning and sequence analysis of GnRH receptor gene. [ Method] GnRH in pi...[ Objective] To locate gonadotropin-releasing hormone （GnRH） in pituitary of Guangxi swamp buffaloes and to provide a theoretical ba- sis for cloning and sequence analysis of GnRH receptor gene. [ Method] GnRH in pituitary were immunohistochemically stained by avidin biotin complex method. The GnRH expression was analyzed with image system. The GnRH receptor gene was amplified by real-time PCR. [ Result] Many GnRH positive cells were detected in pars distalis of adenohypophysis. GnRH were distributed in cytoplasm but not in nuclei. No positive sig- nal was observed in neurohypophysis. In addition, the GnRH receptor gene, 920 bp in size, was amplified. [ Conclusion] A large number of GnRH and GnRH receptor were found in pars distalis of adenohypophysis, which indicates that anterior pituitary is an important tissue for functions of hypo- thalamus-pituitary-gonadal axis and other endocrine axes.展开更多
Kisspeptin is essential for activation of the hypothalamo-pituitary-gonadal axis. In this study, we established gonadotropin-releasing hormone/enhanced green fluorescent protein transgenic rats. Rats were injected wit...Kisspeptin is essential for activation of the hypothalamo-pituitary-gonadal axis. In this study, we established gonadotropin-releasing hormone/enhanced green fluorescent protein transgenic rats. Rats were injected with 1, 10, or 100 pM kisspeptin-10, a peptide derived from full-length kisspeptin, into the arcuate nucleus and medial preoptic area, and with the kJsspeptJn antagonist peptJde 234 into the lateral cerebral ventricle. The results of immunohistochemical staining revealed that pulsatile luteinizing hormone secretion was suppressed after injection of antagonist peptide 234 into the lateral cerebral ventricle, and a significant increase in luteinizing hormone level was observed after kisspeptin-10 injection into the arcuate nucleus and medial preoptic area. The results of an enzyme-linked immunosorbent assay showed that luteinizing hormone levels during the first hour of kisspeptin-10 infusion into the arcuate nucleus were significantly greater in the 100 pM kisspeptin-10 group than in the 10 pM kisspeptin-10 group. These findings indicate that kisspeptin directly promotes gonadotropin-releasing hormone secretion and luteinizing hormone release in gonadotropin-releasing hormone/enhanced green fluorescent protein transgenic rats. The arcuate nucleus is a key component of the kisspeptin-G protein-coupled receptor 54 signaling pathway underlying regulating luteinizing hormone pulse secretion.展开更多
OBJECTIVE:To explore the nature of ascendingdescending-floating-sinking of Traditional Chinese Medicine on normal rats using gonadotropin-releasing hormone(GnRh).METHODS:Normal male Sprague-Dawley rats were orally adm...OBJECTIVE:To explore the nature of ascendingdescending-floating-sinking of Traditional Chinese Medicine on normal rats using gonadotropin-releasing hormone(GnRh).METHODS:Normal male Sprague-Dawley rats were orally administered six floating Chinese medicines and seven sinking Chinese medicines for 14 d.Then,GnRh and relevant indicators were detected.Initially,the different effects of floating and sinking drugs on the body were explored.To verify the effects of floating and sinking drugs on the body,normal rats were orally administered Mahuang(Herba Ephedra Sinica)and Tinglizi(Semen Lepidii Apetali)for 14 d.Then,GnRh antagonists were administered.We observed the changes of relevant indicators and clarified the correlation between GnRh and the laws of floating and sinking.RESULTS:Floating Chinese medicines significantly increased the testicular coefficients;GnRh level in the serum;the protein level of GnRh receptor(GnRhR)in the testis;and the mRNA levels of androgen receptor(AR),small C-terminal domain phosphatase(SCP)3,SCP2,SYCE1,SMC1 B,SMC3,and Rec8(P<0.01 or<0.05).Sinking Chinese medicines did not react similarly,while GnRh antagonists blocked the regulatory effect of Mahuang(Herba Ephedra Sinica)but did not affect Tinglizi(Semen Lepidii Apetali).CONCLUSIONS:GnRh may be closely related to the nature of ascending-descending-floating-sinking of Chinese medicine.Floating Chinese medicines may promote their medicinal properties by regulating Gn RH level;however,sinking Chinese medicines did not affect GnRh level.展开更多
目的：建立人脑膜瘤组织微阵列（组织芯片）,应用组织芯片技术研究促性腺激素释放激素受体（GnRHR）在人脑膜瘤的表达及与脑膜瘤病理分级的相关性.方法：收集手术切除的脑膜瘤蜡块标本126例,制作成直径2.0 mm 的组织芯片,以正常人脑组...目的：建立人脑膜瘤组织微阵列（组织芯片）,应用组织芯片技术研究促性腺激素释放激素受体（GnRHR）在人脑膜瘤的表达及与脑膜瘤病理分级的相关性.方法：收集手术切除的脑膜瘤蜡块标本126例,制作成直径2.0 mm 的组织芯片,以正常人脑组织为对照,采用免疫组化方法检测GnRHR在不同级别脑膜瘤中的表达.结果：①126例脑膜瘤中GnRHR的阳性表达率为69.05%,随着脑膜瘤WHO分级的增高,GnRHR表达率逐渐下降;不同级别脑膜瘤的GnRHR表达率组间有统计学意义（P=0.0015）;②不同类型脑膜瘤GnRHR阳性表达间差别无统计学意义.③正常脑组织中未见到GnRHR的表达,与脑膜瘤组比较差别有统计学意义.结论：GnRHR与人脑膜瘤发生密切相关,GnRHR在超过半数的脑膜瘤中有表达,而且对脑膜瘤的发展与演变可能起着重要的促进作用.展开更多
目的研究促性腺激素释放激素(gonadotropin-releasing hormone,GnRH)及其受体(gonadotropin-releasing hormone receptor,GnRHR)在乳腺癌中的表达情况,探索其临床意义。方法从美国癌症基因组图谱(The Cancer Genomes Atlas,TCGA)数据库...目的研究促性腺激素释放激素(gonadotropin-releasing hormone,GnRH)及其受体(gonadotropin-releasing hormone receptor,GnRHR)在乳腺癌中的表达情况,探索其临床意义。方法从美国癌症基因组图谱(The Cancer Genomes Atlas,TCGA)数据库下载乳腺癌患者GnRH、GnRHR基因表达数据和临床病理信息资料,分析GnRH、GnRHR与乳腺癌临床病理学指标和预后的相关性。结果乳腺癌组织中GnRH表达量低于正常乳腺组织(0.42 vs 1.27,P=0.000),其与年龄(U=134190.000,P=0.046)、人种(χ2=30.030,P=0.000)、淋巴结状态(U=126697.000,P=0.003)、ER(U=69435.000,P=0.000)、PR(U=99978.000,P=0.000)、HER2(U=53388,P=0.000)相关,以年龄≤55岁、黑人或非裔美国人、淋巴结阴性、ER阴性、PR阴性、HER2阴性者GnRH表达量较高。生存分析提示GnRH高表达组总生存期(overall survival,OS)优于低表达组(P=0.018)。乳腺癌组织中GnRHR表达量与正常乳腺组织相似(0.08 vs 0.07,P=0.778),其与年龄(U=133325.000,P=0.031)、人种(χ2=16.829,P=0.000)、ER(U=68438.000,P=0.000)、PR(U=92714.500,P=0.000)、HER2(U=66205.000,P=0.030)相关,以年龄>55岁、白人、ER阳性、PR阳性、HER2阴性者GnRHR表达量较高。GnRHR高表达组与低表达组间OS差异无统计学意义(P=0.719),亚组分析发现在三阴性乳腺癌亚组中GnRHR高表达组OS优于低表达组(P=0.028),而在非三阴性亚组中GnRHR与OS无相关性(P=0.976)。结论GnRH、GnRHR表达与乳腺癌部分临床病理学指标存在相关性,与乳腺癌(尤其是三阴性乳腺癌)的预后存在相关性。GnRH、GnRHR信号通路可能具有抑癌活性。展开更多
文摘Single nucleotide polymorphisms （SNP） of chicken gonadotropin-releasing hormone receptor （GnRHR） and neuropeptide Y （NPY） were selected to identify the genotypes of Wenchang （Chinese indigenous breed） chicken with restricton fragment length polymorphisms. The associations of the SNPs with the total egg production （NE）, average days of continual laying （ADCL）, and number of double-yolked eggs （DYE） traits were analyzed. The frequency of restriction enzyme A/a alleles in the population was for GnRHR 0.69 （Bpu1102 Ⅰ A） and 0.31 （Bpu1102 Ⅰ a） and for NPY 0.46 （Dra Ⅰ B） and 0.54 （Dra Ⅰ b）. Trait data from a total of 120 hens, which were purebred introduced from Hainan Province, China from one generation were recorded. Two significant effects of genes＇ marker were found： for GnRHR and number of eggs （dominant; t= 2.67, df= 116） and NPY and number of eggs （additive; t= 1.97, df= 116）. The current research supports the effects of GnRHR and NPY genes on egg-laying traits of chickens.
基金supported by the grants from Research and Innovation Project for Master Degree Candidates(105930903014)Guangxi Natural Science Foundation(06400150832043 and 0991042+3 种基金Guangxi Science and Technology Department)Research Foundation of Guangxi Education Department(200709LX075Guangxi Education and Research)Guangxi Large-scale Instrument Collaboration and Sharing Network Program
文摘[ Objective] To locate gonadotropin-releasing hormone （GnRH） in pituitary of Guangxi swamp buffaloes and to provide a theoretical ba- sis for cloning and sequence analysis of GnRH receptor gene. [ Method] GnRH in pituitary were immunohistochemically stained by avidin biotin complex method. The GnRH expression was analyzed with image system. The GnRH receptor gene was amplified by real-time PCR. [ Result] Many GnRH positive cells were detected in pars distalis of adenohypophysis. GnRH were distributed in cytoplasm but not in nuclei. No positive sig- nal was observed in neurohypophysis. In addition, the GnRH receptor gene, 920 bp in size, was amplified. [ Conclusion] A large number of GnRH and GnRH receptor were found in pars distalis of adenohypophysis, which indicates that anterior pituitary is an important tissue for functions of hypo- thalamus-pituitary-gonadal axis and other endocrine axes.
文摘Kisspeptin is essential for activation of the hypothalamo-pituitary-gonadal axis. In this study, we established gonadotropin-releasing hormone/enhanced green fluorescent protein transgenic rats. Rats were injected with 1, 10, or 100 pM kisspeptin-10, a peptide derived from full-length kisspeptin, into the arcuate nucleus and medial preoptic area, and with the kJsspeptJn antagonist peptJde 234 into the lateral cerebral ventricle. The results of immunohistochemical staining revealed that pulsatile luteinizing hormone secretion was suppressed after injection of antagonist peptide 234 into the lateral cerebral ventricle, and a significant increase in luteinizing hormone level was observed after kisspeptin-10 injection into the arcuate nucleus and medial preoptic area. The results of an enzyme-linked immunosorbent assay showed that luteinizing hormone levels during the first hour of kisspeptin-10 infusion into the arcuate nucleus were significantly greater in the 100 pM kisspeptin-10 group than in the 10 pM kisspeptin-10 group. These findings indicate that kisspeptin directly promotes gonadotropin-releasing hormone secretion and luteinizing hormone release in gonadotropin-releasing hormone/enhanced green fluorescent protein transgenic rats. The arcuate nucleus is a key component of the kisspeptin-G protein-coupled receptor 54 signaling pathway underlying regulating luteinizing hormone pulse secretion.
基金Supported by the National Key Research and Development Program:the Major Project for Research of the Modernization of TCM(No.2019YFC1708802)Henan Province high-level personnel special support:“Zhong Yuan One Thousand People Plan”-Zhongyuan Leading Talent(No.ZYQR201810080)Key Scientific Research Projects of Colleges and Universities of Henan Province(No.21A360014)
文摘OBJECTIVE:To explore the nature of ascendingdescending-floating-sinking of Traditional Chinese Medicine on normal rats using gonadotropin-releasing hormone(GnRh).METHODS:Normal male Sprague-Dawley rats were orally administered six floating Chinese medicines and seven sinking Chinese medicines for 14 d.Then,GnRh and relevant indicators were detected.Initially,the different effects of floating and sinking drugs on the body were explored.To verify the effects of floating and sinking drugs on the body,normal rats were orally administered Mahuang(Herba Ephedra Sinica)and Tinglizi(Semen Lepidii Apetali)for 14 d.Then,GnRh antagonists were administered.We observed the changes of relevant indicators and clarified the correlation between GnRh and the laws of floating and sinking.RESULTS:Floating Chinese medicines significantly increased the testicular coefficients;GnRh level in the serum;the protein level of GnRh receptor(GnRhR)in the testis;and the mRNA levels of androgen receptor(AR),small C-terminal domain phosphatase(SCP)3,SCP2,SYCE1,SMC1 B,SMC3,and Rec8(P<0.01 or<0.05).Sinking Chinese medicines did not react similarly,while GnRh antagonists blocked the regulatory effect of Mahuang(Herba Ephedra Sinica)but did not affect Tinglizi(Semen Lepidii Apetali).CONCLUSIONS:GnRh may be closely related to the nature of ascending-descending-floating-sinking of Chinese medicine.Floating Chinese medicines may promote their medicinal properties by regulating Gn RH level;however,sinking Chinese medicines did not affect GnRh level.
文摘目的：建立人脑膜瘤组织微阵列（组织芯片）,应用组织芯片技术研究促性腺激素释放激素受体（GnRHR）在人脑膜瘤的表达及与脑膜瘤病理分级的相关性.方法：收集手术切除的脑膜瘤蜡块标本126例,制作成直径2.0 mm 的组织芯片,以正常人脑组织为对照,采用免疫组化方法检测GnRHR在不同级别脑膜瘤中的表达.结果：①126例脑膜瘤中GnRHR的阳性表达率为69.05%,随着脑膜瘤WHO分级的增高,GnRHR表达率逐渐下降;不同级别脑膜瘤的GnRHR表达率组间有统计学意义（P=0.0015）;②不同类型脑膜瘤GnRHR阳性表达间差别无统计学意义.③正常脑组织中未见到GnRHR的表达,与脑膜瘤组比较差别有统计学意义.结论：GnRHR与人脑膜瘤发生密切相关,GnRHR在超过半数的脑膜瘤中有表达,而且对脑膜瘤的发展与演变可能起着重要的促进作用.
文摘目的研究促性腺激素释放激素(gonadotropin-releasing hormone,GnRH)及其受体(gonadotropin-releasing hormone receptor,GnRHR)在乳腺癌中的表达情况,探索其临床意义。方法从美国癌症基因组图谱(The Cancer Genomes Atlas,TCGA)数据库下载乳腺癌患者GnRH、GnRHR基因表达数据和临床病理信息资料,分析GnRH、GnRHR与乳腺癌临床病理学指标和预后的相关性。结果乳腺癌组织中GnRH表达量低于正常乳腺组织(0.42 vs 1.27,P=0.000),其与年龄(U=134190.000,P=0.046)、人种(χ2=30.030,P=0.000)、淋巴结状态(U=126697.000,P=0.003)、ER(U=69435.000,P=0.000)、PR(U=99978.000,P=0.000)、HER2(U=53388,P=0.000)相关,以年龄≤55岁、黑人或非裔美国人、淋巴结阴性、ER阴性、PR阴性、HER2阴性者GnRH表达量较高。生存分析提示GnRH高表达组总生存期(overall survival,OS)优于低表达组(P=0.018)。乳腺癌组织中GnRHR表达量与正常乳腺组织相似(0.08 vs 0.07,P=0.778),其与年龄(U=133325.000,P=0.031)、人种(χ2=16.829,P=0.000)、ER(U=68438.000,P=0.000)、PR(U=92714.500,P=0.000)、HER2(U=66205.000,P=0.030)相关,以年龄>55岁、白人、ER阳性、PR阳性、HER2阴性者GnRHR表达量较高。GnRHR高表达组与低表达组间OS差异无统计学意义(P=0.719),亚组分析发现在三阴性乳腺癌亚组中GnRHR高表达组OS优于低表达组(P=0.028),而在非三阴性亚组中GnRHR与OS无相关性(P=0.976)。结论GnRH、GnRHR表达与乳腺癌部分临床病理学指标存在相关性,与乳腺癌(尤其是三阴性乳腺癌)的预后存在相关性。GnRH、GnRHR信号通路可能具有抑癌活性。
