Nesfatin-1对初情期雌性大鼠促性腺激素及其mRNA表达的影响     

王尧尧  李冉  李运生  蒋书东  王勇  时代  岳晓琳  方富贵  李福宝 《中国农业大学学报》2015,20(3):139-145

为探究侧脑室注射Nesfatin-1对雌性大鼠促性腺激素水平及其mRNA表达的影响,对初情期前雌性大鼠的侧脑室注射Nesfatin-1,采用实时荧光定量PCR法检测促黄体素(Luteinizing hormone,LH)和促卵泡素(Folliclestimulating hormone,FSH)mRNA在垂体中的变化,采用酶联免疫分析法检测血清LH和FSH的浓度。结果表明:在初情期前的雌性大鼠中,Nesfatin-1可促进初情期启动、增加卵巢重量、血清LH水平、垂体LH mRNA和FSH mRNA的表达增加(P0.05);但Nesfatin-1对FSH水平的影响不突出,注射后15min时增加(P0.05),60min不产生影响(P0.05)。侧脑室注射Nesfatin-1后15和60min均能提高血清LH水平,15min时提高更明显(P0.05),但对FSH水平的影响不尽相同。在成年的雌性大鼠中,Nesfatin-1对LH和FSH的分泌不产生影响(P0.05)。Nesfatin-1可通过下丘脑诱导和增强初情期过渡阶段雌性大鼠LH和FSH的释放及LH、FSH mRNA的表达。  相似文献   

中国大白兔的超数排卵效果比较   总被引：5，自引：0，他引：5  

丁志丽  戴荣亮  周俊波  王杏龙 《河南畜牧兽医(综合版)》2005,26(11):7-9

采用国产FSH和德国产PM SG对58只中国大白兔进行超数排卵试验。结果表明:①两种激素超排均有较好的效果,FSH组平均排卵点和平均回收胚胎数分别为285±180个、225±132枚;PM SG组分别为270±119个、236±98枚,经t检验,两者差异不显著(p>005),但从超排母兔回收胚胎的分布情况看,PM SG组的超排效果更稳定些。②右侧卵巢排卵数无论是FSH组(537%)还是PM SG组(505%)均高于左侧卵巢(分别为463%和495%),FSH组左、右侧卵巢排卵数差异极显著(p<001),PM SG组差异不显著(p>005)。③两种激素在春季对母兔的超排效果都明显优于秋季(p<001)。  相似文献   

猪FSHβ亚基基因、ESR及ob基因分子遗传标记的检测方法   总被引：5，自引：1，他引：4  

杜立新  柳淑芳  姜运良  王爱华 《中国畜牧杂志》2001,37(3):11-13

本文对影响猪繁殖性能和产肉性能的雌激素受体 (ESR)基因、促卵泡素 (FSH) β亚基基因和ob基因的检测方法进行了研究 ,对不同基因型的PCR反应条件和程序进行了改进 ,建立了一次PCR反应同时检测这 3个基因分子遗传标记的方法 ,结果与分别对 3个基因进行检测的结果完全相同  相似文献   

限制性内切酶片段长度多态性在几个绵羊品种中的研究   总被引：1，自引：0，他引：1  

曹红鹤 《畜牧兽医学报》1994,(5)

本文利用羊的促卵泡激素（ＦＳＨ）ｃＤＮＡ，胸腺（Ｔｈｙｍｕｓ）基因组ＤＮＡ及卵泡抑止素（Ｆｏｌｌｉｓｔａｔｉｎ）ｃＤＮＡ等３种探针与泰国长尾羊，喀麦隆羊（Ｃａｍｅｒｏｏｎ）及它们Ｆ１代杂种的基因组ＤＮＡ进行分子杂交，结果在ＥｃｏＲＩ，ＨｉｎｄⅢ和ＴａｑⅠ酶切的ＤＮＡ片段与ＦＳＨｃＤＮＡ杂交的图谱上，可观察到ＲＦＬＰ的存在，并可根据某些特殊区带的存在与否区别两个不同种的羊。用ＥｃｏＲＩ酶切的ＤＮＡ片段与胸腺基因组ＤＮＡ探针杂交，也发现了ＲＦＬＰ，而其它３种酶的酶切片段与此探针杂交，个体间的图谱是一致的。利用本实验所采用的４种限制性内切酶，在所测定品种及杂交种的卵泡抑止素位点没有发现变异。  相似文献   

Interaction between melatonin and follicle-stimulating hormone promotes in vitro development of caprine preantral follicles     

R.M.P. Rocha  L.F. Lima  A.M.C.V. Alves  J.J.H. Celestino  M.H.T. Matos  I.B. Lima-Verde  M.P. Bernuci  C.A.P. Lopes  S.N. Báo  C.C. Campello  A.P.R. Rodrigues  J.R. Figueiredo 《Domestic animal endocrinology》2013

The aim of this study was to investigate the effects of melatonin and follicle-stimulating hormone (FSH) on the in vitro culture of goat preantral follicles. Ovarian fragments were cultured for 7 d in α-minimum essential medium (α-MEM⁺) containing melatonin (100, 250, 500, or 1,000 pM), FSH (50 ng/mL), or a combination of the 2 hormones and further analyzed by histology and transmission electron and fluorescent microscopy. The results showed that after 7 d of culture, tissues cultured in α-MEM⁺ alone or supplemented with FSH alone, melatonin (500 and 1,000 pM), or the combination of FSH and melatonin (1,000 pM) maintained percentages of normal preantral follicles similar to the fresh control. In contrast to the noncultured tissues, the percentage of developing follicles was increased under all culture conditions after 7 d (P < 0.05). The addition of 1,000 pM melatonin associated with FSH to the culture medium increased follicular and oocyte diameters compared with α-MEM⁺ alone after 7 d of culture (P < 0.05). Ultrastructural and fluorescent analyses confirmed the integrity of follicles cultured with 1,000 pM of melatonin plus FSH for 7 d. In conclusion, this study demonstrated that the interaction between melatonin and FSH maintains ultrastructural integrity and stimulates further growth of cultured caprine preantral follicles.  相似文献   

FSH up-regulates angiogenic factors in luteal cells of buffaloes     

L.A. Fátima  M.C. Evangelista  R.S. Silva  A.P.M. Cardoso  P.S. Baruselli  P.C. Papa 《Domestic animal endocrinology》2013

Follicle-stimulating hormone has been widely used to induce superovulation in buffaloes and cows and usually triggers functional and morphologic alterations in the corpus luteum (CL). Several studies have shown that FSH is involved in regulating vascular development and that adequate angiogenesis is essential for normal luteal development. Angiogenesis is regulated by many growth factors, of which vascular endothelial growth factor (VEGF) and fibroblast growth factor 2 (FGF2) have an established central role. Therefore, we have used a combination of in vitro and in vivo studies to assess the effects of FSH on the expression of VEGF and FGF2 and their receptors in buffalo luteal cells. The in vivo model consisted of 12 buffalo cows, divided into control (n = 6) and superovulated (n = 6) groups, and CL samples were collected on day 6 after ovulation. In this model, we analyzed the gene and protein expression of FGF2 and its receptors and the protein expression of VEGFA systems with the use of real-time PCR, Western blot analysis, and immunohistochemistry. In the in vitro model, granulosa cells were collected from small follicles (diameter, 4–6 mm) of buffaloes and cultured for 4 d in serum-free medium with or without FSH (10 ng/mL). To induce in vitro luteinization, LH (250 ng/mL) and fetal bovine serum (10%) were added to the medium, and granulosa cells were maintained in culture for 4 d more. The progesterone concentration in the medium was measured at days 4, 5, and 8 after the beginning of cell culture. Cells were collected at day 8 and subjected to real-time PCR, Western blot analysis, and immunofluorescence for assessment of the expression of FGF2, VEGF, and their receptors. To address the percentage of steroidogenic and growth factor-expressing cells in the culture, flow cytometry was performed. We observed that in superovulated buffalo CL, the FGF2 system mRNA expression was decreased even as protein expression was increased and that the VEGF protein was increased (P < 0.05). In vitro experiments with granulosa cells showed an increase in the mRNA expression of VEGF and FGF2 and its receptors 1 and 2 and protein expression of VEGF, kinase insert domain receptor, FGF receptor 2, and FGF receptor 3 in cells treated with FSH (P < 0.05), in contrast to the in vivo experiments. Moreover, the progesterone production by FSH-treated cells was elevated compared with untreated cells (P < 0.05). Our findings indicate that VEGF, FGF2, and their receptors were differentially regulated by FSH in vitro and in vivo in buffalo luteal cells, which points toward a role of CL environment in modulating cellular answers to gonadotropins.  相似文献   

Superstimulation of Follicular Growth in Thai Native Heifers by a Single Administration of Follicle Stimulating Hormone Dissolved in Polyvinylpyrrolidone     

Jakkhaphan CHASOMBAT  Denpong SAKHONG  Takashi NAGAI  Rangsun PARNPAI  Thevin VONGPRALUB 《The Journal of reproduction and development》2013,59(2):214-218

  相似文献   

西藏牦牛超数排卵技术研究     

张成福 《草业与畜牧》2013,(5):33-37,53

本研究选择24头藏北当雄牦牛为对象,分为组Ⅰ、组Ⅱ和组Ⅲ三组,每组8头,选用PG＋FSH、Cu-Mate ＋FSH和Cu-Mate ＋FSH ＋PMSG三种方法分别处理进行超数排卵试验.结果表明：25～60h内的发情率为100％,其中,25～36h为16.67％,37～48h为62.5％,49～60h为20.83％,37～48h之间发情率与25～36h之间差异显著（P＜0.05）,37～48h之间发情率与49～60h之间差异极显著（P＜0.01）;组Ⅰ、组Ⅱ、组Ⅲ黄体数分别为15、11、12个,头均分别为1.875、1.375、1.5个,回收胚胎数分别为7、4、5枚,可用胚胎数分别为6、4、4枚,三组之间在黄体数、头均黄体数、获得胚胎数及可用胚胎数上差异均不显著（P＞0.05）.说明三种方法都能获得较好的超排效果.  相似文献   

Follicle-stimulating hormone (FSH) and follicle-stimulating hormone receptor (FSHR) in female mammal     

ZHAO Zhun-jun  ZHANG Guo-lei 《黑龙江动物繁殖》2008,16(4)

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Effects of follicle‐stimulating hormone followed by gonadotropin‐releasing hormone on embryo production by ovum pick‐up and in vitro fertilization in the river buffalo (Bubalus bubalis)     

Kenichiro Sakaguchi  Excel Rio S. Maylem  Ramesh C. Tilwani  Yojiro Yanagawa  Seiji Katagiri  Edwin C. Atabay  Eufrocina P. Atabay  Masashi Nagano 《Animal Science Journal》2019,90(5):690-695

In this study, we examined the effects of superstimulation using follicle‐stimulating hormone (FSH) followed by gonadotropin‐releasing hormone (GnRH) on buffalo embryo production by ultrasound‐guided ovum pick‐up (OPU) and in vitro fertilization (IVF). Nine Murrah buffaloes were subjected to OPU‐IVF without superstimulation (control). The morphologies of the oocytes collected were evaluated, and oocytes were then submitted to in vitro maturation (IVM). Two days after OPU, same nine buffaloes were treated with twice‐daily injections of FSH for 3 days for superstimulation followed by a GnRH injection. Oocytes were collected by OPU 23–24 hr after the GnRH injection and submitted to IVM (the superstimulated group). The total number of follicles, number of follicles with a diameter > 8 mm, and number of oocytes surrounded by multi‐layered cumulus cells were higher in the superstimulated group than in the control group (p ≤ 0.05). After IVF, the percentages of cleavage and development to blastocysts were higher in the superstimulated group than in the control group (p < 0.05). In conclusion, superstimulation improved the quality of oocytes and the embryo productivity of OPU‐IVF in river buffaloes.  相似文献