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1.
BMPR-IB基因是发现最早且对绵羊排卵率影响机理已经阐明的多胎主效基因,主要在与繁殖有关的组织和器官中表达,并且对绵羊排卵起重要的调控作用。本研究采用实时荧光定量PCR(Real-time Quantitative PCR,RQ-PCR)技术的相对定量方法对BMPR-IB基因在不同生理时期蒙古羊的卵巢和子宫组织进行了差异表达的研究。定量结果得到-βActin基因的扩增曲线回归方程为y=-3.358x+35.708,回归系数R2=0.990,BMPR-IB基因的扩增曲线回归方程为y=-2.119x+31.424,回归系数R2=0.992。以非发情期蒙古羊的卵巢组织定量结果为对照计算得到BMPR-IB基因在发情期蒙古羊的卵巢组织中表达量最高,在发情期的子宫组织中表达量最低,在发情期卵巢组织中的表达量是非发情期的2.65倍。 相似文献
2.
《中国草食动物科学》2017,(6)
为研究不同季节蒙古羊卵巢中骨形态发生蛋白受体IB(bone morphogenetic protein receptor IB,BMPR-IB)基因的表达与血清中生殖激素的关联性,采用酶联免疫法测定了蒙古羊血清中促卵泡素(follicle stimulating hormone,FSH)和促黄体素(luteinizing hormone,LH)的浓度,对不同季节蒙古羊卵巢组织中BMPR-IB基因的表达量进行了实时荧光定量PCR(Real-time PCR,RT-PCR)分析。结果表明:发情季节(11月份)蒙古羊血液中FSH和LH的浓度均高于非发情季节(4月份),非发情季节蒙古羊卵巢中BMPR-IB基因的表达量极显著高于发情季节(P0.01)。说明蒙古羊卵巢中BMPR-IB基因的表达量与血液激素水平有呈负相关的趋势。 相似文献
3.
以绵羊BMPR-IB基因为主效基因.以中国美利奴羊(新疆军垦型)多胎品系为研究对象,应用Genopro软件绘制多胎品系绵羊的系谱.记录母羊产羔数.采用PCR-RFLP方法对BMPR-IB基因进行基因型分型.分析多胎性状的分离规律,研究BMPR-IB基因型分布与以多胎性能为目标的品系培育的相关性.结果表明,在品系培育中,BMPR-IB基因的表型符合孟德尔遗传分离模式,增加绵羊产羔数由常染色体突变所致,BMPR-IB基因可以用于对绵羊产羔数的选择. 相似文献
4.
文章就BMPR-IB基因、BMP4基因和BMPR-IA基因等几个高繁殖力基因和尚需深入研究的高繁殖力基因(GnRHR、INHA、FSHβ以及PGR)在绵羊上的研究做了简要概述,旨在为探讨绵羊高繁殖力的形成规律提供理论依据。 相似文献
5.
《畜牧兽医学报》2015,(4)
为了探讨AA-NAT基因表达与绵羊常年发情之间的关联性,本研究以常年发情小尾寒羊和季节性发情滩羊各9只为研究对象,利用real-time PCR技术检测AA-NAT基因在这2种绵羊不同发情阶段下丘脑、垂体、松果体、卵巢、子宫体和肾上腺6种组织中的mRNA表达情况。结果显示,AA-NAT基因在不同情期的两个绵羊品种的6个组织中表达有明显差异,在发情期绵羊的卵巢、子宫体、松果体中高水平表达。春秋季发情期小尾寒羊与秋季发情期滩羊相比,其卵巢和子宫体中AA-NAT基因表达量极显著偏低(P0.01),而松果体中表达量极显著偏高(P0.01)。本研究结果初步表明,卵巢、子宫体和松果体中AA-NAT基因表达上调可能与小尾寒羊常年发情相关。 相似文献
6.
《畜牧兽医学报》2016,(6)
本研究旨在克隆BB基因型小尾寒羊的BMPR-IB基因编码区,构建重组载体,瞬时转染绒山羊成纤维细胞,并对BMPR-IB等基因的表达情况进行检测。采用RT-PCR方法扩增BMPR-IB基因完整编码区,构建真核表达载体pEGFP-BMPR-IB,经脂质体Lipofectamine LTXPLUS介导转染绒山羊成纤维细胞,并分别于转染后48和72h收集细胞,分别提取RNA和蛋白,利用RT-PCR和Western blot方法检测相关基因的表达情况。结果扩增得到了包含BMPR-IB基因完整编码区全长在内的1 550bp片段,与已知序列高度同源;Real-time PCR检测结果均表明,转基因组细胞中BMPR-IB表达量显著高于空白对照组(P0.01),IGF-Ⅰ基因表达量也显著上调(P0.01),TLR4、IFN、MHC、PNRP、GDF5、INH基因的表达量显著降低(P0.01);Western blot检测表明,转染组BMPR-IB、IGF-I的表达有所增加,BMP4、TLR4的表达略有降低,但差异均不显著(P0.05)。本研究成功实现了小尾寒羊BMPR-IB基因在山羊成纤维细胞中的表达,为转BMPR-IB基因阳性细胞株和细胞系的建立提供了基础;研究表明BMPR-IB(BB型)基因的过表达能上调IGF-Ⅰ基因的表达,下调TLR4基因的表达。 相似文献
7.
BMPR-IB基因中的A746G突变与Booroola绵羊高繁殖力完全相关.为了研究该基因与山羊繁殖力的关系,试验采用PCR-SSCP方法对河北中部本地山羊中不同繁殖力群体的BMPR-IB基因进行多态性检测.并通过BLAST、BioEdit、DNasp等生物软件对山羊、绵羊、人等6个物种BMPR-IB基因的CDS序列进行了生物信息分析.结果发现在供试山羊不同繁殖力群体BMPR-IB基因不存在A746G的突变,生物信息学分析发现35条序列闻存在370个多态位点,山羊和绵羊间的核苷酸歧义度和遗传距离是各物种间最小的. 相似文献
8.
云岭黑山羊BMPR-IB基因部分编码区的克隆及多态性分析 总被引：4，自引：0，他引：4
应用RT-PCR方法从云岭黑山羊卵巢组织克隆与产羔性状相关的BMPR-IB基因。结果表明,克隆的BMPR-IB基因扩增片段长467 bp,扩增片段位于该基因编码区第497与963位碱基之间,与已报道的野生型山羊、绵羊、猪、人和鼠的BMPR-IB基因该编码区的同源性分别为99%、99%、92%、92%和87%;与野生型山羊相比,云岭黑山羊BMPR-IB基因第498位和575位碱基存在多态性位点,其中第498位碱基由T突变为C,组成的密码仍编码天冬氨酸（Asp,D）,为同义突变;第575位碱基由C突变为T,编码的氨基酸由脯氨酸（Pro,P）变为亮氨酸（Leu,L）,为错义突变;BMPR-IB蛋白的二级结构在错义突变位点可能具有多种构象。本研究结果为深入研究BMPR-IB基因与云岭黑山羊产羔性状间的关系奠定了基础。 相似文献
9.
《中国畜牧杂志》2019,(11)
为探究PER2基因在绵羊繁殖相关组织中的表达水平及其多态性与绵羊繁殖性状的关系,本实验通过实时荧光定量PCR(qPCR)检测PER2基因在季节性发情的苏尼特羊和常年发情的小尾寒羊松果体、下丘脑、垂体、卵巢、输卵管以及子宫组织中的表达情况,同时利用Sequenom MassARRAY~?SNP技术检测季节性发情绵羊品种(草原型藏羊、苏尼特羊、滩羊共204只)和常年发情绵羊品种(小尾寒羊、湖羊、策勒黑羊共564只)PER2基因g.2852655T>C位点的多态性。结果表明:PER2基因在绵羊的松果体、下丘脑、垂体、卵巢、输卵管以及子宫组织中均有表达,且在季节性繁殖的苏尼特羊卵巢和子宫组织中的表达均显著高于常年发情小尾寒羊(P<0.05),而在输卵管组织中则相反(P<0.05);分型结果表明,PER2基因的g.2852655T>C位点存在3种基因型,该位点的基因型频率和等位基因频率在发情性状不同的绵羊品种之间具有显著差异。综上,PER2基因在季节性发情苏尼特羊卵巢组织中的表达量显著高于常年发情小尾寒羊,初步推测卵巢中较高水平PER2基因的表达通过抑制LHR受体的表达及孕酮的分泌,进而影响绵羊的季节性发情,且较高水平PER2基因表达可能在卵子受精和胚胎发育过程中也起到重要调控作用。 相似文献
10.
本研究旨在探讨PROP1和PRLR基因在绵羊不同组织中的表达差异及其发育变化规律。利用荧光实时定量PCR技术分析了PROP1和PRLR基因在中国美利奴成年母羊13种组织中的表达谱信息,并检测了垂体组织中PROP1基因和垂体、卵巢、睾丸和皮肤组织中PRLR基因在0、7、14、30、60和90日龄时表达水平的发育变化。结果表明:PROP1基因仅在绵羊垂体组织中表达;而PRLR基因在绵羊各种组织中广泛表达,且在子宫和下丘脑组织中的表达量高于其它组织(P<0.01)。垂体组织中的PROP1基因表达量较低,在7日龄高于30(P<0.01)、14和60日龄(P<0.05)。垂体组织中PRLR基因表达量在30日龄时最高,之后急剧下降,各日龄间无差异(P>0.05);在卵巢组织中从7日龄起呈先下降后上升的趋势,90日龄高于0(P<0.01)、14和30日龄(P<0.05);在睾丸组织中总体呈上升趋势;在皮肤组织中呈现为生长前期高于后期的趋势(P<0.01)。绵羊PROP1和PRLR基因表达存在明显的组织表达差异和发育变化差异;PROP1和PRLR基因的表达可能对绵羊繁殖等性状的发育有一定的调节作用。 相似文献
11.
Owen J Slocombe D McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1986,27(9):324-328
In late December 1985, 1485 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1985 and 44% of them responded. Veterinarians reported that 137,300 dogs were blood-tested to check for microfilariae and 1210 dogs were found with heartworm. Another 36 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number diagnosed in 1985 as 1247 (0.91%).
Heartworm was reported from all provinces except Prince Edward Island, Newfoundland and Saskatchewan but most (1126) of the cases were in Ontario. Southwestern Ontario continued to be the primary focus of the infection in Canada. From Quebec, 91 cases were reported mostly from and around Montreal. From Manitoba, 19 cases were reported from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 28% of the cases were observed with clinical signs of heartworm disease and 78% had a history of not having left Canada.
相似文献12.
Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1989,30(6):504-508
In late November 1988, 1581 small and mixed animal clinics and institutional veterinarians across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1988, and 46% of them responded. Veterinarians reported that 181,577 dogs were blood-tested for heartworm disease and 367 dogs were found with D. immitis microfilariae. Another 60 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1988 as 441 (0.24%). 相似文献
13.
Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1985,26(10):323-327
In late December 1984, 1853 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1984 and 35% of them responded. Veterinarians reported that 97,794 dogs were blood-tested to check for microfilariae and 1417 dogs (1.45% of those tested) were found with heartworm. Another 34 dogs were amicrofilaremic, but were diagnosed as having heartworm disease, to give the total number diagnosed in 1984 as 1451 (1.48%). Heartworm was reported from all provinces except Prince Edward Island and Newfoundland but most (1310) of the cases were in Ontario. In Quebec, 126 cases were reported mostly from west of Montreal.
Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 27% of the cases were observed with clinical signs of heartworm disease and 72% had a history of not having left Canada. Southwestern Ontario continued to be the primary focus of the infection.
相似文献14.
15.
Slocombe JO Villeneuve A 《The Canadian veterinary journal. La revue veterinaire canadienne》1993,34(10):630-633
In late November 1991, 1883 clinics in Canada were sent a questionnaire to assess the status of Dirofilaria immitis in dogs in 1991 and there was a 60.0% response. There were 344,031 dogs tested for heart-worm (HW), 627 were found infected and the prevalence of HW infection was 0.18%. There were 417 dogs with HW in Ontario, 116 in Manitoba, 38 in Quebec, 53 in British Columbia, three in Alberta, and one in Nova Scotia. In British Columbia, all of the infected dogs but one were from the Okanagan valley which, as from 1991, is a new focus of infection in Canada. Most dogs with HW had not been on preventive medication in 1990, and the prevalence among dogs tested and unprotected was 0.59%. That prevalence was considerably higher in endemic areas. Companion dogs, over three years of age and maintained primarily outdoors in rural areas, were most frequently infected. One cat was diagnosed with D. immitis and 33 dogs had Dipetalonema reconditium. 相似文献
16.
In late November 1989, 1732 clinics and institutional veterinarians were sent a questionnaire to assess the status of Dirofilaria immitis, and 51.7% responded. Of 247,716 dogs tested, 394 had D. immitis microfilariae and 51 were amicrofilaremic for a total of 445 cases and heartworm prevalence of 0.17%. Most (408) of these dogs had no preventive medication and the prevalence among dogs tested and unprotected was 1.01%. That prevalence was considerably higher in endemic areas. Thirty-seven dogs with heartworm had preventive medication. Heartworm was most frequent in companion dogs over three years of age maintained outdoors in rural areas. About 75% of the cases had never left Canada, 26% had clinical signs and 125 were not treated.
Heartworm was reported from British Columbia, Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland, but 383 cases were in Ontario. South-western Ontario was the primary focus of infection. There were 33 cases in Quebec and 24 in Manitoba, mainly found in and around Metropolitan Montreal and Winnipeg respectively.
相似文献17.
Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(8):641-646
In late November 1987, 1246 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1987, and 50% of them responded. Veterinarians reported that 165,428 dogs were blood tested for heartworm disease and 511 dogs were found with D. immitis microfilariae. Another 78 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1987 as 589 (0.35%). 相似文献
18.
Owen J Slocombe D McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1987,28(8):491-495
In late December 1986, 1224 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1986; 46% of them responded. Veterinarians reported that 150,989 dogs were blood-tested for microfilariae and 869 dogs were found with heartworm. Another 65 dogs were amicrofilaremic but diagnosed with heartworm disease and one was found with heartworm at necropsy to give the total number diagnosed in 1986 as 935 (0.62%).
Heartworm was reported from Manitoba, New Brunswick, Ontario and Quebec, but most (810) of the cases were from Ontario. South-western Ontario continued to be the primary focus of the infection in Canada. There were 103 cases reported from Quebec, mostly from and around Montreal, and 21 cases from Manitoba, from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 33% of the cases were observed with clinical signs of heartworm disease and 81% had a history of not having left Canada.
相似文献19.
20.
Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1984,25(9):347-350
In late December 1983, 2 800 veterinarians across Canada were sent a questionnaire in order to assess the status of heartworm disease in Canada in 1983 and 26% of them responded. Veterinarians reported that 59 504 dogs were blood-tested to check for microfilariae and 771 dogs (1.30% of those tested) were found with Dirofilaria immitis. Heartworm disease was diagnosed in all provinces except New Brunswick and Newfoundland but most (733) of the cases were in Ontario.
Heartworm disease was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 31% of the cases were observed with clinical signs of heartworm disease and 64% had a history of not having left Canada. Southwestern Ontario continues to be the focus of the infection and most of the dogs there had not left the province previously.
相似文献