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Hector R Vera-Avila, Jorge Urrutia-Morales, Mario A Espinosa-Martinez, Hector G Gamez-Vazquez, Hector Jimenez-Severiano, Eugenio Villagomez-Amezcua
The effect of goat nutritional condition on the response to biostimulation with sexually active males during different stages of anestrus was determined. Fifty-eight Criollo × Nubian females on high and low body mass index (BMI) diets were used. Each BMI group was divided into two for biostimulation with sexually active males during May (mid-anestrus) or July (transition period). Ovulatory responses to biostimulation were characterized from serum progesterone, as well as the delay for response (first and second ovulations followed by a normal length luteal phase, O-WNLP)...
October 17, 2016: Animal Science Journal, Nihon Chikusan Gakkaihō
Yongqing Wang, Xunke Gu, Liyuan Tao, Yangyu Zhao
BACKGROUND: Cervical incompetence is an important cause of miscarriage and premature birth and polycystic ovary syndrome is a heterogeneous endocrine disorder that is the most common cause of anovulatory infertility and eugonadotrophic hypogonadism. By now, it is still debated whether women with PCOS have an increased risk of miscarriage and there have been no studies about the pregnancy outcomes of cervical incompetence patients with PCOS. METHODS: The following clinical data of cervical incompetence patients with/without PCOS who were treated between September 2006 and September 2013 were retrospectively analysed: onset gestational age, termination gestational age, pregnancy outcome, co-morbid insulin resistance (IR) in PCOS patients, the influence of IR, co-morbid hyperandrogenism (HA) in PCOS patients, and the influence of HA...
October 12, 2016: BMC Pregnancy and Childbirth
J S Stevenson
The objective of this study was to determine the relative importance and contribution of several physiological factors as predictors of pregnancy risk in an Ovsynch (GnRH-1 - 7 d - PGF2α - 56 h - GnRH-2 - 16 h - artificial insemination) timed artificial insemination program: (1) age of the corpus luteum (CL; original CL, new CL, or both in response to GnRH-1) and resulting progesterone concentrations as they affected luteolysis, ovulation after GnRH-2, and pregnancy risk; (2) progesterone concentration before GnRH-1 and GnRH-2 on subsequent ovulatory response to GnRH-1 and GnRH-2 as well as pregnancy risk; and (3) a combination of these factors in a multivariable logistic regression model to predict pregnancy risk...
October 5, 2016: Journal of Dairy Science
Toshiya Matsuzaki, Altankhuu Tungalagsuvd, Takeshi Iwasa, Munkhsaikhan Munkhzaya, Rie Yanagihara, Takako Tokui, Kiyohito Yano, Yiliyasi Mayila, Takeshi Kato, Akira Kuwahara, Sumika Matsui, Minoru Irahara
Hypersecretion of luteinizing hormone (LH) is a common endocrinological finding of polycystic ovary syndrome (PCOS). This derangement might have a close relationship with hypothalamic kisspeptin expression that is thought to be a key regulator of gonadotropin-releasing hormone (GnRH). We evaluated the relationship between the hypothalamic-pituitary-gonadal axis (HPG axis) and kisspeptin using a rat model of PCOS induced by letrozole. Letrozole pellets (0.4 mg/day) and control pellets were placed subcutaneously onto the backs of 3-week-old female Wistar rats...
September 24, 2016: Endocrine Journal
Archana D Rathod, Rohidas P Chavan, Sandhya P Pajai, Vijay Bhagat, Prachi Thool
ABSTRACT: Adolescence is a period of enormous physical and psychological change for young girls. Many adolescents with menstrual disturbances never present to their family doctor or gynecologist. Embarrassment about discussing menstruation, fear of disease, and ignorance about services available may lead to delayed presentation or consultation with doctor. AIMS AND OBJECTIVE: To evaluate the different gynecological problems in adolescent girls attending outpatient department...
October 2016: Journal of Obstetrics and Gynaecology of India
Luz M Tejada, Cesar A Meza-Herrera, Raymundo Rivas-Muñoz, Rafael Rodríguez-Martínez, Evaristo Carrillo, Miguel Mellado, Francisco G Véliz-Deras
We determine whether Dorper rams treated with testosterone in the sexual resting season trigger both appetitive and consummatory sexual behaviors and sexual and reproductive outcomes in anestrous ewes at 26° North during March-April. Dorper rams (n = 12, 2.5 years) were randomly divided prior to mating in two groups: GT (treated group; n = 6), treated with testosterone propionate (25 mg i.m. every 3 days × 3 weeks) and GC (control group; n = 6), treated with saline. Thereafter, adult anovulatory Dorper ewes (n = 61) were exposed to the GT-rams while the other group (n = 60) was exposed to the GC-rams...
September 14, 2016: Archives of Sexual Behavior
Ozan Dogan, Ahmet Yildiz, Osman Temizkan, Cigdem Pulatoglu
OBJECTIVES: Blood flow to uterus and ovaries is demonstrated to be altered during mensturation. Studies has been published stating that blood flow differs also in ovulatory and anovulatory cycles. In this study, using color Doppler ultrasound, we aim to compare uterine, endometrial and ovarian blood flow during ovulatory and anovulatory cycles. MATERIAL AND METHODS: Women volunteers who are aged between 18-40 had no endocrinological problem and not recieving exogenous hormone therapy were included to study...
2016: Ginekologia Polska
Jinyong Liu, Tin-Chiu Li, Jing Wang, Wei Wang, Zhen Hou, Jiayin Liu
OBJECTIVE: To evaluate the impact of ovarian stimulation on the outcome of intrauterine insemination (IUI). DESIGN: Retrospective analysis. SETTING: A single university-based centre. POPULATION: A total of 5109 couples with 8893 cycles. METHODS: The outcome of IUI with different protocols for ovarian stimulation was examined. MAIN OUTCOME MEASURES: The live birth rate (LBR), twin pregnancy rate and ovarian hyperstimulation syndrome (OHSS)...
September 2016: BJOG: An International Journal of Obstetrics and Gynaecology
Miriam P Cervantes, J Manuel Palomino, Muhammad Anzar, Reuben J Mapletoft, Gregg P Adams
Experiments were done to compare the in vivo and in vitro maturational characteristics of cumulus-oocyte complexes (COC) collected from live wood bison. In Experiment 1 (anovulatory season), follicular ablation was done to synchronize follicle wave emergence among bison on Day -1, and FSH was given on Days 0 and 2. Bison were then assigned to 5 groups (n=5/group) in which COC were collected by transvaginal follicle aspiration on Day 4 and either fixed immediately with no maturation (control), matured in vitro for 24 or 30h, or collected on Day 5 after in vivo maturation for 24 or 30h (i...
October 2016: Animal Reproduction Science
Akiko Takahashi, Shinji Kanda, Tomohiro Abe, Yoshitaka Oka
Reproduction is essential for life, but its regulatory mechanism is diverse. The analysis of this diversity should lead us to understand the evolutionary process of the regulation of reproduction. In mammals, the hypothalamic-pituitary-gonadal axis plays an essential role in such regulation, and each component, hypothalamic GnRH, and pituitary gonadotropins, LH, and FSH, is indispensable. However, the common principle of the hypothalamic-pituitary-gonadal axis regulation among vertebrates remains unclear. Here, we used a teleost medaka, which is phylogenetically distant from mammals, and analyzed phenotypes of gene knockouts (KOs) for GnRH, LH, and FSH...
October 2016: Endocrinology
Mia V Gallo, Julia Ravenscroft, David O Carpenter, Cheryl Frye, Akwesasne Task Force On The Environment, Beverly Cook, Lawrence M Schell
Although the potential for endocrine disrupting chemicals (EDCs) to disrupt female fecundity is great, few studies have assessed the threat to human reproduction. This study investigates levels of organochlorines in relation to their impact on women's menstrual cycles and ovulatory status. To address concerns of the Akwesasne Mohawk community in upstate New York regarding well-established exposure to EDCs, women's fertility and reproductive health endpoints, we recruited 215 women between the ages of 21 and 38 years to measure menstrual cycle characteristics and levels of local pollutants...
August 17, 2016: Environmental Research
Adam H Balen, Lara C Morley, Marie Misso, Stephen Franks, Richard S Legro, Chandrika N Wijeyaratne, Elisabet Stener-Victorin, Bart C J M Fauser, Robert J Norman, Helena Teede
BACKGROUND: Here we describe the consensus guideline methodology, summarise the evidence-based recommendations we provided to the World Health Organisation (WHO) for their consideration in the development of global guidance and present a narrative review on the management of anovulatory infertility in women with polycystic ovary syndrome (PCOS). OBJECTIVE AND RATIONALE: The aim of this paper was to present an evidence base for the management of anovulatory PCOS...
August 10, 2016: Human Reproduction Update
Artur Bjelica, Jelena Bjelanović, Natasa Milić, Ljiljana Mladenović Segedi, Đorde Ilić, Jelena Dimitrijević
INTRODUCTION: Polycystic ovary syndrome is the most frequent endocrine disturbance in the reproductive period of women's life and the most frequent cause of anovulatory infertility. Ovulation and pregnancy in patients having polycystic ovary syndrome may be a result of a wide range of therapeutic options, and the treatment assumes a gradual approach--from simple noninvasive to expensive and demanding procedures. MATERIAL AND METHODS: A systematic literature survey concerning the efficiency of particular ovulation induction methods in respect of the reproductive outcome was carried out with the aim of establishing the algorithm for ovulation induction in infertile patients having polycystic ovary syndrome...
January 2016: Medicinski Pregled
Demetra Socolov, R Socolov, Ivona Aughelache Lupascu, V Rugina, O Gabia, Daniela Mihaela Garauleanu, A Carauleanu
AIM: Endometrial hyperplasia is a proliferation of endometrial glands due to the prolonged stimulation with estrogens of the endometrium that occurs in women receiving exogenous estrogens, with anovulatory cycles, or in patients with ovarian tumours with estrogen secretion. MATERIAL AND METHODS: The study performed by the authors included 575 patients with endometrial hyperplasia and 163 patients with endometrial adenocarcinoma admitted to the "Cuza-Vodă" Obstetrics and Gynaecology Clinical Hospital of Iasi, between 2005-2007...
April 2016: Revista Medico-chirurgicală̆ a Societă̆ţ̜ii de Medici ş̧i Naturaliş̧ti Din Iaş̧i
Marie Bedos, Wendy Portillo, Jean-Philippe Dubois, Gerardo Duarte, José A Flores, Philippe Chemineau, Matthieu Keller, Raúl G Paredes, José A Delgadillo
In small ungulates such as sheep or goats, the introduction of a male among a group of anovulatory females during the anestrus season leads to the reactivation of the gonadotrope axis and ovulation, a phenomenon known as the 'male effect'. In goats, our previous studies have demonstrated the importance of male sexual activity for an efficient reactivation of the gonadotrope axis assessed through ovulation and blood LH pulsatility. In the present experiment, we assessed whether the level of male sexual activity would also induce differential activation of two brain regions of key importance for the reactivation of GnRH activity, namely the medial preoptic area and the hypothalamic arcuate nucleus...
October 15, 2016: Physiology & Behavior
V De Leo, M C Musacchio, V Cappelli, M G Massaro, G Morgante, F Petraglia
Polycystic ovary syndrome (PCOS) is a complex endocrine disorder affecting 5-10 % of women of reproductive age. It generally manifests with oligo/anovulatory cycles, hirsutism and polycystic ovaries, together with a considerable prevalence of insulin resistance. Although the aetiology of the syndrome is not completely understood yet, PCOS is considered a multifactorial disorder with various genetic, endocrine and environmental abnormalities. Moreover, PCOS patients have a higher risk of metabolic and cardiovascular diseases and their related morbidity, if compared to the general population...
2016: Reproductive Biology and Endocrinology: RB&E
Pierluigi Giampaolino, Ilaria Morra, Giovanni Antonio Tommaselli, Costantino Di Carlo, Carmine Nappi, Giuseppe Bifulco
PURPOSE: To compare conventional laparoscopic ovarian drilling (LOD) with transvaginal hydrolaparoscopy (THL) ovarian drilling in terms of ovarian adhesion formation, evaluated using office THL during follow-up in CC-resistant anovulatory patients affected by PCOS. METHODS: Prospective randomized study on 246 CC-resistant women with PCOS. The patients enrolled were divided into two groups, 123 were scheduled to undergo LOD and 123 to undergo THL ovarian drilling...
October 2016: Archives of Gynecology and Obstetrics
Lisa K Brents
Marijuana use among women is highly prevalent, but the societal conversation on marijuana rarely focuses on how marijuana affects female reproduction and endocrinology. This article reviews the current scientific literature regarding marijuana use and hypothalamic-pituitary-ovarian (HPO) axis regulation, ovarian hormone production, the menstrual cycle, and fertility. Evidence suggests that marijuana can reduce female fertility by disrupting hypothalamic release of gonadotropin releasing hormone (GnRH), leading to reduced estrogen and progesterone production and anovulatory menstrual cycles...
June 2016: Yale Journal of Biology and Medicine
Amy Rothberg, Michael Lanham, John Randolph, Christine Fowler, Nicole Miller, Yolanda Smith
OBJECTIVE: To evaluate the feasibility of a brief, intensive weight loss intervention (IWL) to improve reproductive outcomes in obese subfertile women. DESIGN: Pilot study of IWL versus standard-of-care nutrition counseling (SCN). SETTING: Single-site, academic institution. PATIENT(S): Obese women (body mass index, 35-45 kg/m(2)) with anovulatory subfertility. INTERVENTION(S): Women were rigorously prescreened to rule out secondary causes of subfertility...
June 20, 2016: Fertility and Sterility
Lucía Demaldé, Mariana Lopez Merlo, Rosario Vercellini, Claudio G Barbeito, Patricia Fernandez, Cristina Gobello
To test the hypothesis that in domestic cats, postnatal androgens induce sterility, the aims of this study were to describe the reproductive effects and the clinical safety of a postnatal administration of a long term release androgen in this species. Thirteen newborn littermate female kittens were randomly assigned to one of the following treatment groups within the first 24h of birth: testosterone enanthate 12.5mg sc (TE; n=8) or Placebo (PL; n=5). The animals were subsequently assessed for fecal sexual hormones until puberty was attained and subsequently when matings occurred...
August 2016: Animal Reproduction Science
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