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https://www.readbyqxmd.com/read/29784930/comparative-mrna-and-mirna-expression-in-european-mouflon-ovis-musimon-and-sheep-ovis-aries-provides-novel-insights-into-the-genetic-mechanisms-for-female-reproductive-success
#1
Ji Yang, Xin Li, Yin-Hong Cao, Kisun Pokharel, Xiao-Ju Hu, Ze-Hui Chen, Song-Song Xu, Jaana Peippo, Mervi Honkatukia, Juha Kantanen, Meng-Hua Li
Prolific breeds of domestic sheep (Ovis aries) are important genetic resources due to their reproductive performance, which is characterized by multiple lambs per birth and out-of-season breeding. However, the lack of a comprehensive understanding of the genetic mechanisms underlying the important reproductive traits, particularly from the evolutionary genomics perspective, has impeded the efficient advancement of sheep breeding. Here, for the first time, by performing RNA-sequencing we built a de novo transcriptome assembly of ovarian and endometrial tissues in European mouflon (Ovis musimon) and performed an mRNA-miRNA integrated expression profiling analysis of the wild species and a highly prolific domestic sheep breed, the Finnsheep...
May 21, 2018: Heredity
https://www.readbyqxmd.com/read/29784463/anti-m%C3%A3-llerian-hormone-profiling-in-prepubertal-horses-and-its-relationship-with-gonadal-function
#2
Dragos Scarlet, Manuela Wulf, Juliane Kuhl, Martin Köhne, Natascha Ille, Alan J Conley, Christine Aurich
Anti-Müllerian hormone (AMH) has gained increasing interest as a biomarker for assessment of gonadal activity. The ability to predict the ovarian follicular reserve of prepubertal female horses (fillies) or to identify stallions with testicular pathologies already during their prepubertal life has not been analyzed so far. Both would help to select fertile horses and reduce costs associated with keeping animals. The objectives of the present study were to (1) assess AMH, LH, FSH, progesterone (females) and testosterone (males) dynamics in prepubertal horses from birth onwards and (2) determine whether AMH concentrations detected in plasma of prepubertal female and male horses are correlated with postpubertal gonadal development...
May 15, 2018: Theriogenology
https://www.readbyqxmd.com/read/29782841/alternative-splicing-of-gnrh2-and-gnrh2-associated-peptide-plays-roles-in-gonadal-differentiation-of-the-rice-field-eel-monopterus-albus
#3
Ke Feng, Hongrui Luo, Mingxi Hou, Yongming Li, Ji Chen, Zuoyan Zhu, Wei Hu
The rice field eel, Monopterus albus, is a protogynous hermaphrodite fish, in which the gonads are initially female ovaries which then transform into male testes. The exact mechanisms governing sex reversal in the rice field eel are unknown. In this study, a novel alternative splicing variant of GnRH2 (GnRH2-SV), retaining the second intron, was discovered in the gonad of the rice field eel. Compared to GnRH2, GnRH2-SV may give rise to a novel truncated GnRH2-associated peptide (New GAP2). The normal transcript of GnRH2 was primarily expressed in the brain, and could also be detected in the liver, spleen, ovary, and testis...
May 18, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29778272/development-of-the-waveless-bovine-model
#4
F Jimenez-Krassel, J L H Ireland, C Kronemeyer, A Wilson-Alvarado, J J Ireland
Development of a bovine model without ovarian follicular waves (waveless) and transient increases in gonadotropin secretion during estrous cycles may lead to new methods to more consistently regulate ovulatory follicle growth thereby improving efficiency of embryo transfer. We hypothesized that the GnRH antagonist acyline would inhibit gonadotropin secretion thereby blocking follicular waves, ovarian function and ovulation during estrous cycles of cattle. To test this hypothesis, beef heifers (n = 5 per group) were treated twice daily with vehicle (control) or 25 or 50 μg/kg acyline beginning 12 h after GnRH-induced ovulation and ending 21 days later...
May 15, 2018: Animal Reproduction Science
https://www.readbyqxmd.com/read/29770362/study-of-anti-m%C3%A3-llerian-hormone-levels-in-patients-with-myotonic-dystrophy-type-1-preliminary-results
#5
Manuela Ergoli, Massimo Venditti, Raffaele Dotolo, Esther Picillo, Sergio Minucci, Luisa Politano
Myotonic dystrophy type 1 is a multisystemic disorder characterized by myotonia, muscle weakness and involvement of several organs and apparatus such as heart, lungs, eye, brain and endocrine system. Hypogonadism and reproductive abnormalities are frequently reported. A progressive testicular atrophy occurs in about 80% in the affected males leading to Leydig cell hyperproliferation and elevated basal follicle stimulating hormone (FSH) levels. Anti-Müllerian hormone (AMH) - a dimeric glycoprotein belonging to the super-family of transforming grow factor beta (TGF-beta) - is the earliest Sertoli cell hormone secreted in males and, together with inhibin B and FSH, is an important indicator of Sertoli cell function...
December 2017: Acta Myologica: Myopathies and Cardiomyopathies: Official Journal of the Mediterranean Society of Myology
https://www.readbyqxmd.com/read/29765437/evaluation-of-ovarian-reserve-in-women-with-overt-or-subclinical-hypothyroidism
#6
Ferit Kerim Kucukler, Umit Gorkem, Yasin Simsek, Ramazan Kocabas, Serdar Guler
Introduction: Thyroid dysfunction is among the most common autoimmune disorders in women of reproductive age. Previous studies have shown the association between autoimmune thyroid disease (AITD) and infertility. Anti-Müllerian hormone (AMH) is secreted by granulosa cells and is a useful marker for assessment of ovarian reserve. In the present study, we sought to evaluate the ovarian reserves of women with autoimmune thyroid disorder by measurement of AMH values. Material and methods: This prospective study included women with newly diagnosed AITD aged between 20 and 40 years...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29764793/evaluation-of-the-ovarian-reserve-in-adolescents-with-hashimoto-s-thyroiditis-using-serum-anti-m%C3%A3-llerian-hormone-levels
#7
Ezgi Özalp Akın, Zehra Aycan
OBJECTIVE: This study aims to evaluate the ovarian reserve of the adolescent girls with Hashimoto's thyroiditis (HT) with serum anti-müllerian hormone (AMH) levels and compare to healthy adolescents. It is hypothesized that HT decreases ovarian reserve and AMH levels are lower in the HT group. METHOD: Thirty HT patients aged between 10-18 years and 30 healthy girls as the control group are enrolled in this cross-sectional study. The mean serum AMH levels of the groups are compared using the Mann-Whitney U test...
May 16, 2018: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/29764377/transcriptome-display-during-tilapia-sex-determination-and-differentiation-as-revealed-by-rna-seq-analysis
#8
Wenjing Tao, Jinlin Chen, Dejie Tan, Jing Yang, Lina Sun, Jing Wei, Matthew A Conte, Thomas D Kocher, Deshou Wang
BACKGROUND: The factors determining sex in teleosts are diverse. Great efforts have been made to characterize the underlying genetic network in various species. However, only seven master sex-determining genes have been identified in teleosts. While the function of a few genes involved in sex determination and differentiation has been studied, we are far from fully understanding how genes interact to coordinate in this process. RESULTS: To enable systematic insights into fish sexual differentiation, we generated a dynamic co-expression network from tilapia gonadal transcriptomes at 5, 20, 30, 40, 90, and 180 dah (days after hatching), plus 45 and 90 dat (days after treatment) and linked gene expression profiles to both development and sexual differentiation...
May 15, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29760445/elevated-prenatal-anti-m%C3%A3-llerian-hormone-reprograms-the-fetus-and-induces-polycystic-ovary-syndrome-in-adulthood
#9
Brooke Tata, Nour El Houda Mimouni, Anne-Laure Barbotin, Samuel A Malone, Anne Loyens, Pascal Pigny, Didier Dewailly, Sophie Catteau-Jonard, Inger Sundström-Poromaa, Terhi T Piltonen, Federica Dal Bello, Claudio Medana, Vincent Prevot, Jerome Clasadonte, Paolo Giacobini
Polycystic ovary syndrome (PCOS) is the main cause of female infertility worldwide and corresponds with a high degree of comorbidities and economic burden. How PCOS is passed on from one generation to the next is not clear, but it may be a developmental condition. Most women with PCOS exhibit higher levels of circulating luteinizing hormone, suggestive of heightened gonadotropin-releasing hormone (GnRH) release, and anti-Müllerian hormone (AMH) as compared to healthy women. Excess AMH in utero may affect the development of the female fetus...
May 14, 2018: Nature Medicine
https://www.readbyqxmd.com/read/29760203/a-dense-linkage-map-of-lake-victoria-cichlids-improved-the-pundamilia-genome-assembly-and-revealed-a-major-qtl-for-sex-determination
#10
Philine G D Feulner, Julia Schwarzer, Marcel P Haesler, Joana I Meier, Ole Seehausen
Genetic linkage maps are essential for comparative genomics, high quality genome sequence assembly and fine scale quantitative trait locus (QTL) mapping. In the present study we identified and genotyped markers via restriction-site associated DNA (RAD) sequencing and constructed a genetic linkage map based on 1,597 SNP markers of an interspecific F2 cross of two closely related Lake Victoria cichlids ( Pundamilia pundamilia and P. sp. 'red head'). The SNP markers were distributed on 22 linkage groups and the total map size was 1,594 cM with an average marker distance of 1...
May 14, 2018: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29758382/effects-of-exposure-to-bpf-on-development-and-sexual-differentiation-during-early-life-stages-of-zebrafish-danio-rerio
#11
Qian Yang, Xianhai Yang, Jining Liu, Yingwen Chen, Shubao Shen
Bisphenol F (BPF) has become a predominant bisphenol contaminant in recent years. It has significant estrogenic properties in both in vivo and in vitro studies. We have previously studied the disrupting mechanisms of BPF on the hypothalamic-pituitary-gonadal axis of adult zebrafish. However, the effects of BPF exposure on development and sexual differentiation of zebrafish embryos/larvae remain unclear. To determine the effects of BPF on the critical stage of sex differentiation in zebrafish, zebrafish embryos/larvae were exposed to 1, 10, 100, and 1000 μg/L BPF from fertilization to 60 days post-fertilization (dpf)...
May 11, 2018: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/29754264/one-year-impact-of-bariatric-surgery-on-serum-anti-mullerian-hormone-levels-in-severely-obese-women
#12
Clara Vincentelli, Marie Maraninchi, René Valéro, Sophie Béliard, Flavia Maurice, Olivier Emungania, Bruno Berthet, Elise Lombard, Anne Dutour, Bénédicte Gaborit, Blandine Courbiere
INTRODUCTION: Although bariatric surgery seems to increase spontaneous fertility by improving ovulatory function in young women, its impact on ovarian reserve remains largely unknown. OBJECTIVE: To evaluate changes in serum anti-Mullerian hormone (AMH) levels in reproductive-age severely obese women after bariatric surgery (BS). METHODS: AMH levels were measured retrospectively in 39 women (mean age 34.6 ± 1.1 years, range 18-45) that underwent a sleeve gastrectomy or Roux-en-Y gastric bypass (RYGB) at baseline, and 6 and 12 months after BS...
May 12, 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29752986/perinatal-bpa-exposure-and-reproductive-axis-function-in-cd-1-mice
#13
Nicole Acevedo, Beverly S Rubin, Cheryl M Schaeberle, Ana M Soto
Perinatal Bisphenol-A (BPA) exposure reduces fertility and fecundity in mice. This study examined effects of early BPA exposure on activation of gonadotropin releasing hormone (GnRH) neurons in conjunction with a steroid-induced luteinizing hormone (LH) surge, characterized patterns of estrous cyclicity and fertility over time, and assessed the ovarian follicular reserve to further explore factors responsible for the reduced fertility we previously described in this model. The percent activated GnRH neurons was reduced in BPA exposed females at 3-6 months, and periods of persistent proestrus was increased...
May 9, 2018: Reproductive Toxicology
https://www.readbyqxmd.com/read/29749518/effects-of-chronic-unpredictable-mild-stress-on-ovarian-reserve-in-female-rats-feasibility-analysis-of-a-rat-model-of-premature-ovarian-failure
#14
Xiao-Yan Fu, Hao-Hao Chen, Ning Zhang, Ming-Xing Ding, Ying-Er Qiu, Xiao-Ming Pan, Yuan-Shu Fang, Yi-Ping Lin, Qun Zheng, Wen-Qian Wang
Premature ovarian failure (POF) results from a number of disorders. The POF model is primarily based on chemotherapeutic injury, and hence is not suitable for assessing the effects of chronic stress on ovarian function. Therefore, improved animal models are required to analyze the effects of chronic stress on ovarian reserve. The feasibility of the chronic unpredictable mild stress (CUMS) method for establishing a model of POF was examined. The depressive behavior exhibited by rats was evaluated with the open field and sucrose preference tests...
May 8, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29742446/quantification-of-m%C3%A3-llerian-inhibiting-substance-anti-m%C3%A3-llerian-hormone-polypeptide-by-isotope-dilution-mass-spectrometry
#15
Gail Whiting, Jackie Ferguson, Min Fang, David Pepin, Patricia Donahoe, Paul Matejtschuk, Chris Burns, Jun X Wheeler
Measurement of serum concentrations of Müllerian inhibiting substance (MIS), also known as anti-Müllerian Hormone (AMH) by immunoassay is gaining clinical acceptance and widespread use for the diagnosis of ovarian conditions and for prediction of the response to ovarian stimulation protocols as part of assisted reproductive therapies. Provision of an International Standard to harmonize immunoassay methods is required. It is desirable for the content of a future International Standard to be assigned in mass units for consistency with the units reported by current methods...
May 6, 2018: Analytical Biochemistry
https://www.readbyqxmd.com/read/29738982/anti-m%C3%A3-llerian-hormone-levels-are-associated-with-live-birth-rates-in-art-but-the-predictive-ability-of-anti-m%C3%A3-llerian-hormone-is-modest
#16
Sara S E Alson, Leif J Bungum, Aleksander Giwercman, Emir Henic
OBJECTIVES: The aim was to evaluate the association between serum Anti-Müllerian Hormone (AMH) level and cumulative live birth rates (LBR) in patients undergoing their first in vitro fertilization (IVF) treatment cycle, and to compare serum AMH levels with Antral Follicle Count (AFC) and Ovarian Sensitivity Index (OSI) as predictors of live birth. STUDY DESIGN: A prospective cohort study of 454 patients under the age of 40 and with a regular menstrual cycle of 21-35 days, undergoing their first IVF treatment cycles between September 2010 and June 2015...
May 2, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29738413/is-ovarian-reserve-associated-with-body-mass-index-and-obesity-in-reproductive-aged-women-a-meta-analysis
#17
Nazanin Moslehi, Sakineh Shab-Bidar, Fahimeh Ramezani Tehrani, Parvin Mirmiran, Fereidoun Azizi
OBJECTIVE: The associations of body mass index (BMI) and obesity with ovarian reserve are controversial. This systematic review and meta-analysis was conducted to investigate the associations in reproductive-aged women. METHODS: PubMed and Scopus were searched up to December, 2016. Original studies on the association of BMI with ovarian reserve markers, anti-Mullerian hormone (AMH), follicle-stimulating hormone (FSH), inhibin β, and antral follicle count (AFC), either according to BMI categories or a continuous variable, were selected...
May 7, 2018: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/29729909/the-relationship-between-serum-anti-m%C3%A3-llerian-hormone-concentrations-and-fertility-and-genome-wide-associations-for-anti-m%C3%A3-llerian-hormone-in-holstein-cows
#18
M Gobikrushanth, D C Purfield, M G Colazo, S T Butler, Z Wang, D J Ambrose
The objectives of this study were to (1) evaluate factors associated with variation in circulating anti-Müllerian hormone (AMH) concentrations, (2) establish an optimum AMH threshold predictive of pregnancy to first artificial insemination (P/AI), (3) examine the relationship between AMH and fertility (P/AI, pregnancy loss between 30 and 60 d after artificial insemination, and pregnancy risk up to 250 d postpartum), and (4) identify quantitative trait loci associated with phenotypic variation of AMH concentrations in dairy cows...
May 2, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29727207/the-impact-of-autoimmunity-related-early-ovarian-aging-on-icsi-cycle-outcome
#19
Gulay Beydilli Nacak, Enis Ozkaya, Cigdem Yayla Abide, Bulent Emre Bilgic, Belgin Devranoglu, Reyyan Gokcen Iscan
The aim of this study was to investigate the impact of anti-thyroid peroxidase antibodies (Anti-TPO) on the in vitro fertilization and embryo transfer (IVF-ET) outcome in women with poor ovarian reserve but normal thyrotropin levels. A total of 300 patients with poor ovarian reserve undergoing ICSI cycle from April 2015 to December 2017 were analyzed retrospectively. Subjects were divided into two groups: Group 1: Women with early ovarian aging, Group 2: Women with age related poor ovarian reserve. All subjects underwent anti-thyroid peroxidase antibody (anti-TPO) analysis...
May 4, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29726646/-orchidopexy-increases-the-levels-of-serum-anti-m%C3%A3-llerian-hormone-and-inhibin-b-in-cryptorchidism-patients
#20
Shun-Shun Cao, Yang-Yang Hu, Cun-Jin Nan
Objective: To investigate the levels of serum anti-Müllerian hormone (AMH) and inhibin B (INHB) in patients with unilateral cryptorchidism before and after orchidopexy. METHODS: This study included 58 cases of unilateral cryptorchidism treated by orchidopexy and 32 healthy controls. Before and at 6 months after surgery, we measured the length and circumference of the penis, the volume of the undescended testis, and levels of serum AMH and INHB. RESULTS: There were statistically significant differences between the unilateral cryptorchidism and healthy control groups in the levels of serum AMH ([102...
August 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
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