In the present study, a model is suggested to describe hormone control in male blue gourami (<i><span style="font-family:Verdana;">Trichogaster trichopterus</span></i><span style=&...In the present study, a model is suggested to describe hormone control in male blue gourami (<i><span style="font-family:Verdana;">Trichogaster trichopterus</span></i><span style="font-family:Verdana;">) along the gonadotropic brain</span><span style="font-size:10pt;font-family:Verdana;">-</span><span style="font-size:10pt;font-family:Verdana;">pituitary</span><span style="font-size:10pt;font-family:Verdana;">- </span><span style="font-size:10pt;font-family:Verdana;">gonad axis (BPG axis) and the hypothalamic-pituitary-somatotropic axis (HPS axis). This model is based on the cloning</span><span style="font-size:10.0pt;font-family:""><span style="font-family:Verdana;"> and transcription of genes encoding hormones of the two axes involved in spermatogenesis during blue gourami reproduction. Gene transcription is affected by environmental, biological, </span><span style="font-family:Verdana;">and behavioral factors. Mature males were examined in two different stages—nonreproductive in high-density habitats and reproductive in low-density </span><span style="font-family:Verdana;">habitats. Based on gene transcription, gonadotropin-releasing hormone 1 (GnRH1) was involved in controlling spermatogenesis (spermatogonia to spermatids) via the BPG axis in nonreproductive and reproductive stages by controlling follicle-stimulating hormone (FSH), 11-ketotestosterone (11KT) and 17</span><i><span style="font-family:Verdana;">β</span></i><span style="font-family:Verdana;">-estradiol (E</span><sub><span style="font-family:Verdana;">2</span></sub><span style="font-family:Verdana;">). However, GnRH3 had a larger effect during the reproductive stage via the BPG axis (spermatids to sperm) on luteinizing hormone (LH), 11KT, and 17</span><i><span style="font-family:Verdana;">α</span></i></span><span style="font-size:10pt;font-family:Verdana;">-</span><span style="font-size:10pt;font-family:Verdana;">hydroxyprogesterone (17P). At the same time, the HPS axis was involved in spermatogenesis via pituitary adenylate cyclase-activating polypeptide (PACAP) and its related peptide PRP (formerly known as GHRH-like peptide) in the brain, and growth hormone (GH) in the pituitary affected synthesis of insulin-like growth factor 1 (IGF1) in the liver.</span>展开更多
Reproduction technologies(RTs)can provide for the reliable reproduction of amphibians,as well as perpetuation of species genetic variation with the use of biobanks.In 1982,in anticipation of the biodiversity conservat...Reproduction technologies(RTs)can provide for the reliable reproduction of amphibians,as well as perpetuation of species genetic variation with the use of biobanks.In 1982,in anticipation of the biodiversity conservation crisis,major Russian institutions collaborated in a dynamic program to develop and implement RTs for the sustainable management of amphibian biodiversity.An initial primary focus was the captive breeding of threatened Russian endemic anuran and caudate species,using RTs that varied from environmental manipulation to the use of exogenous gonadotropic hormones to stimulate reproduction.These species were mostly from Palearctic or cool mountain regions,but also included a wide range of species from warm regions.Other early achievements included the successful cryopreservation of anuran spermatozoa and anuran diploid pluripotent cell nuclei,in order to store both the matrilineal and patrilineal genomes in biobanks,with their subsequent development to the blastula stage after implantation into enucleated oocytes.After the turn of the 21st Century,in support of the priorities of the Amphibian Conservation Action Plan(2007),we developed RTs for the refrigerated storage of testicular or urinary spermatozoa for days to weeks at 4℃,the cryopreservation of urinary spermatozoa using anovel cryoprotectant,the in vitro fertilisation of hormonally induced oocytes either fresh or after refrigerated ex situ or in situ storage,and the artificial insemination of salamanders with fresh spermatozoa.In this article,we describe previously unpublished techniques and techniques from obscure Russian sources.展开更多
目的:探讨改良超长方案对子宫内膜异位症患者在体外受精-胚胎移植(IVF-ET)/卵细胞浆内单精子注射(ICSI)的应用及其对妊娠结局的影响。方法:对65例子宫内膜异位症患者长效长方案助孕未孕之后行改良超长方案(n=65),比较两种方案促性腺激...目的:探讨改良超长方案对子宫内膜异位症患者在体外受精-胚胎移植(IVF-ET)/卵细胞浆内单精子注射(ICSI)的应用及其对妊娠结局的影响。方法:对65例子宫内膜异位症患者长效长方案助孕未孕之后行改良超长方案(n=65),比较两种方案促性腺激素启动前一日黄体生成素(LH)水平、注射绒促性素(HCG)日LH水平、孕酮(P)水平、雌激素(E2)水平、P/E2比值、子宫内膜厚度、促排天数、用药量、平均获卵数、受精率、优胚率,且统计改良超长方案组着床率、临床妊娠率、活产率等。结果:与长效长方案组相比,改良超长方案组Gn启动前一日LH水平(2.54±0.87 U/L vs 1.04±1.76 U/L,P=0.000)、HCG日LH水平(1.39±0.66 U/L vs 1.01±0.52 U/L,P=0.000)、P/E2比值(0.42±0.25 vs 0.32±0.17,P=0.010)均明显下降,而HCG日E2(657.86±260.39 pmol/L vs 781.11±401.34 pmol/L,P=0.040)、促排卵用药量(2425.19±868.56 U vs 3172.31±1137.67 U,P=0.000)明显增加。虽其他指标无明显差异,但改良超长方案组受精率[(64.22±24.03)%vs(75.49±19.1)%,P=0.004]明显增加。改良超长方案组着床率39.26%,临床妊娠率64.41%,活产率45.76%。结论:改良超长方案有助于改善子宫内膜异位症患者IVF/ICSI妊娠结局。展开更多
文摘In the present study, a model is suggested to describe hormone control in male blue gourami (<i><span style="font-family:Verdana;">Trichogaster trichopterus</span></i><span style="font-family:Verdana;">) along the gonadotropic brain</span><span style="font-size:10pt;font-family:Verdana;">-</span><span style="font-size:10pt;font-family:Verdana;">pituitary</span><span style="font-size:10pt;font-family:Verdana;">- </span><span style="font-size:10pt;font-family:Verdana;">gonad axis (BPG axis) and the hypothalamic-pituitary-somatotropic axis (HPS axis). This model is based on the cloning</span><span style="font-size:10.0pt;font-family:""><span style="font-family:Verdana;"> and transcription of genes encoding hormones of the two axes involved in spermatogenesis during blue gourami reproduction. Gene transcription is affected by environmental, biological, </span><span style="font-family:Verdana;">and behavioral factors. Mature males were examined in two different stages—nonreproductive in high-density habitats and reproductive in low-density </span><span style="font-family:Verdana;">habitats. Based on gene transcription, gonadotropin-releasing hormone 1 (GnRH1) was involved in controlling spermatogenesis (spermatogonia to spermatids) via the BPG axis in nonreproductive and reproductive stages by controlling follicle-stimulating hormone (FSH), 11-ketotestosterone (11KT) and 17</span><i><span style="font-family:Verdana;">β</span></i><span style="font-family:Verdana;">-estradiol (E</span><sub><span style="font-family:Verdana;">2</span></sub><span style="font-family:Verdana;">). However, GnRH3 had a larger effect during the reproductive stage via the BPG axis (spermatids to sperm) on luteinizing hormone (LH), 11KT, and 17</span><i><span style="font-family:Verdana;">α</span></i></span><span style="font-size:10pt;font-family:Verdana;">-</span><span style="font-size:10pt;font-family:Verdana;">hydroxyprogesterone (17P). At the same time, the HPS axis was involved in spermatogenesis via pituitary adenylate cyclase-activating polypeptide (PACAP) and its related peptide PRP (formerly known as GHRH-like peptide) in the brain, and growth hormone (GH) in the pituitary affected synthesis of insulin-like growth factor 1 (IGF1) in the liver.</span>
基金performed within the framework of State projects 122041100276-0 and 075-01027-2200。
文摘Reproduction technologies(RTs)can provide for the reliable reproduction of amphibians,as well as perpetuation of species genetic variation with the use of biobanks.In 1982,in anticipation of the biodiversity conservation crisis,major Russian institutions collaborated in a dynamic program to develop and implement RTs for the sustainable management of amphibian biodiversity.An initial primary focus was the captive breeding of threatened Russian endemic anuran and caudate species,using RTs that varied from environmental manipulation to the use of exogenous gonadotropic hormones to stimulate reproduction.These species were mostly from Palearctic or cool mountain regions,but also included a wide range of species from warm regions.Other early achievements included the successful cryopreservation of anuran spermatozoa and anuran diploid pluripotent cell nuclei,in order to store both the matrilineal and patrilineal genomes in biobanks,with their subsequent development to the blastula stage after implantation into enucleated oocytes.After the turn of the 21st Century,in support of the priorities of the Amphibian Conservation Action Plan(2007),we developed RTs for the refrigerated storage of testicular or urinary spermatozoa for days to weeks at 4℃,the cryopreservation of urinary spermatozoa using anovel cryoprotectant,the in vitro fertilisation of hormonally induced oocytes either fresh or after refrigerated ex situ or in situ storage,and the artificial insemination of salamanders with fresh spermatozoa.In this article,we describe previously unpublished techniques and techniques from obscure Russian sources.
文摘目的:探讨改良超长方案对子宫内膜异位症患者在体外受精-胚胎移植(IVF-ET)/卵细胞浆内单精子注射(ICSI)的应用及其对妊娠结局的影响。方法:对65例子宫内膜异位症患者长效长方案助孕未孕之后行改良超长方案(n=65),比较两种方案促性腺激素启动前一日黄体生成素(LH)水平、注射绒促性素(HCG)日LH水平、孕酮(P)水平、雌激素(E2)水平、P/E2比值、子宫内膜厚度、促排天数、用药量、平均获卵数、受精率、优胚率,且统计改良超长方案组着床率、临床妊娠率、活产率等。结果:与长效长方案组相比,改良超长方案组Gn启动前一日LH水平(2.54±0.87 U/L vs 1.04±1.76 U/L,P=0.000)、HCG日LH水平(1.39±0.66 U/L vs 1.01±0.52 U/L,P=0.000)、P/E2比值(0.42±0.25 vs 0.32±0.17,P=0.010)均明显下降,而HCG日E2(657.86±260.39 pmol/L vs 781.11±401.34 pmol/L,P=0.040)、促排卵用药量(2425.19±868.56 U vs 3172.31±1137.67 U,P=0.000)明显增加。虽其他指标无明显差异,但改良超长方案组受精率[(64.22±24.03)%vs(75.49±19.1)%,P=0.004]明显增加。改良超长方案组着床率39.26%,临床妊娠率64.41%,活产率45.76%。结论:改良超长方案有助于改善子宫内膜异位症患者IVF/ICSI妊娠结局。
