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Reproductive endocrinology

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https://www.readbyqxmd.com/read/27913150/juvenile-hormone-titers-ovarian-status-and-epicuticular-hydrocarbons-in-gynes-and-workers-of-the-paper-wasp-belonogaster-longitarsus
#1
Hans C Kelstrup, Klaus Hartfelder, Nanike Esterhuizen, Theresa C Wossler
The prevailing paradigm for social wasp endocrinology is that of juvenile hormone (JH) functioning pleiotropically in potential and actual queens, where it fuels dominance behaviors, stimulates ovarian growth and/or affects the production of status-linked cuticular compounds. In colonies with annual cycles (e.g., temperate-zone species), female adults produced at the end of the summer (called gynes) are physiologically primed to hibernate. Despite the absence of egg-laying in the pre-overwintering phase, gynes engage in dominance interactions that may affect reproductive potential following hibernation...
November 29, 2016: Journal of Insect Physiology
https://www.readbyqxmd.com/read/27882049/different-effects-of-myoinositol-plus-folic-acid-versus-combined-oral-treatment-on-androgen-levels-in-pcos-women
#2
Ali Cenk Ozay, Ozlen Emekci Ozay, Recep Emre Okyay, Erkan Cagliyan, Tuncay Kume, Bulent Gulekli
Recently, myoinositol (myo-ins) and folic acid combination has gained an important role for treating Polycystic Ovary Syndrome (PCOS), in addition to combined oral contraceptives (COC). We aimed to examine myo-ins effects on anti-Mullerian hormone (AMH) levels and compare them with those ones obtained administering COC. In this prospective study, 137 PCOS patients, diagnosed according to Rotterdam criteria and admitted to the Reproductive Endocrinology and Infertility Outpatient Clinic at Dokuz Eylul University (Izmir, Turkey), were included...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27866819/endocrinology-of-human-female-sexuality-mating-and-reproductive-behavior
#3
REVIEW
Natalie V Motta-Mena, David A Puts
Hormones orchestrate and coordinate human female sexual development, sexuality, and reproduction in relation to three types of phenotypic changes: life history transitions such as puberty and childbirth, responses to contextual factors such as caloric intake and stress, and cyclical patterns such as the ovulatory cycle. Here, we review the endocrinology underlying women's reproductive phenotypes, including sexual orientation and gender identity, mate preferences, competition for mates, sex drive, and maternal behavior...
November 17, 2016: Hormones and Behavior
https://www.readbyqxmd.com/read/27856292/the-challenge-hypothesis-where-it-began-and-relevance-to-humans
#4
REVIEW
John C Wingfield
A contribution to a special issue on Hormones and Human Competition. Over 40years ago assay methods that allowed the accurate measurement of circulating levels of hormones were developed for the first time enabling us to sample free-living as well as captive animals. This led to a new concept called "field endocrinology". It quickly became apparent that endocrine profiles of animals under natural conditions were very different from congeners in captivity. Furthermore, hormone data could be organized by functional units (e...
November 14, 2016: Hormones and Behavior
https://www.readbyqxmd.com/read/27853912/abstracts-from%C3%A2-the-translational-reproductive-biology-and-clinical-reproductive-endocrinology-conference%C3%A2-held-novembrer-17-20-2016
#5
(no author information available yet)
No abstract text is available yet for this article.
November 16, 2016: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/27842788/toxicology-in-reproductive-endocrinology
#6
REVIEW
Roohi Jeelani, Martin H Bluth, Husam M Abu-Soud
Fertility relies on a series of time dependent events, which are largely regulated by hormones. Concentration and function of these hormones can be altered by exposure of consumed and environmental toxins. It is of important to consider the dose and timing of toxin exposures in assessing the impact of them on reproductive health, however the utility of laboratory assessment in this regard is not well established. General laboratory assessment of reproduction and infertility includes hormone evaluation (hCG, prolactin, TSH, free thyroxin, FSH, LH and androgens among others) and treatment is via various assisted reproductive technologies...
December 2016: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/27810183/obesity-may-be-the-common-pathway-for-sleep-disordered-breathing-in-women-with-polycystic-ovary-syndrome
#7
Jyotsna Suri, Jagdish Chander Suri, Bidisha Chatterjee, Pratima Mittal, Tulsi Adhikari
OBJECTIVE: Polycystic ovary syndrome (PCOS) is one of the most common endocrinological disorders in women of reproductive age, and is characterized by hyperandrogenism. It is associated with long-term metabolic dysfunctions including sleep-disordered breathing (SDB). We hypothesized that the increased prevalence of SDB in PCOS results from raised testosterone levels. METHODS: This was a prospective, cross-sectional, case-control study in which 50 case patients with untreated PCOS and 100 control subjects were included...
August 2016: Sleep Medicine
https://www.readbyqxmd.com/read/27783387/testing-the-reproductive-groundplan-hypothesis-in-ants-hymenoptera-formicidae
#8
Tobias Pamminger, William O H Hughes
The evolution of complex societies with obligate reproductive division of labor represents one of the major transitions in evolution. In such societies, functionally sterile individuals (workers) perform many of fitness-relevant behaviors including allomaternal ones, without getting any direct fitness benefits. The question of how such worker division of labor has evolved remains controversial. The reproductive groundplan hypothesis (RGPH) offers a powerful proximate explanation for this evolutionary leap. The RGPH argues that the conserved genetic and endocrinological networks regulating fitness-relevant behavior (e g...
October 26, 2016: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/27779622/mothers-do-it-differently-reproductive-experience-alters-fear-extinction-in-female-rats-and-women
#9
J S Milligan-Saville, B M Graham
Fear extinction is the laboratory basis of exposure therapy for anxiety disorders. Recent findings have revealed that estradiol is necessary to the consolidation of extinction memories in females. These findings are based on studies conducted using virgin rats and young women whose reproductive history is unknown. We hypothesized that motherhood, which results in extensive endocrinological, neurobiological and behavioral changes, may lead to alterations in fear extinction in females. We used a cross-species translational approach to investigate the impact of reproductive experience on fear extinction and fear relapse in female rats (n=116) and women (n=64)...
October 25, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27758004/diagnostic-possibilities-from-a-serum-sample-clinical-value-of-new-methods-within-small-animal-reproduction-with-focus-on-anti-m%C3%A3-llerian-hormone
#10
B S Holst
During the last decade, analysis of anti-Müllerian hormone (AMH), highly conserved between mammalian species, has contributed to new information in reproductive endocrinology, due to clinically available diagnostic assays. AMH is produced solely in the gonads, in the Sertoli cells of testes and granulosa cells of the ovary, and thus offers possibilities to diagnose physiologic and pathologic conditions involving these organs. This article reviews indications for AMH analysis in cats and dogs, including diagnosing the presence of gonads, and granulosa or Sertoli cell tumours...
October 18, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27748448/sex-hormone-binding-globulin-regulation-of-androgen-bioactivity-in-vivo-validation-of-the-free-hormone-hypothesis
#11
Michaël R Laurent, Geoffrey L Hammond, Marco Blokland, Ferran Jardí, Leen Antonio, Vanessa Dubois, Rougin Khalil, Saskia S Sterk, Evelien Gielen, Brigitte Decallonne, Geert Carmeliet, Jean-Marc Kaufman, Tom Fiers, Ilpo T Huhtaniemi, Dirk Vanderschueren, Frank Claessens
Sex hormone-binding globulin (SHBG) is the high-affinity binding protein for androgens and estrogens. According to the free hormone hypothesis, SHBG modulates the bioactivity of sex steroids by limiting their diffusion into target tissues. Still, the in vivo physiological role of circulating SHBG remains unclear, especially since mice and rats lack circulating SHBG post-natally. To test the free hormone hypothesis in vivo, we examined total and free sex steroid concentrations and bioactivity on target organs in mice expressing a human SHBG transgene...
October 17, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27744378/twins-conceived-using-ivf-a-follow-up-of-the-family-environment-and-psychosocial-adjustment-in-adolescence
#12
K N Anderson, J J Connor, A F Koerner, M A Rueter
STUDY QUESTION: Compared to families with IVF singletons, what are parental depressive, parent-adolescent interaction and adolescent adjustment outcomes in families with 11-17-year-old IVF twins? SUMMARY ANSWER: No differences were detected for any measured outcome between families with 11-17-year-old IVF twins and those with IVF singletons, despite high statistical power. WHAT IS KNOWN ALREADY: When IVF twins are younger than 5-years-old, parents tend to have more mental health difficulties and poorer parent-child interactions relative to IVF singletons...
October 15, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27743688/puberty-ovarian-cycle-pregnancy-and-postpartum-ovulation-in-captive-sichuan-golden-monkeys-rhinopithecus-roxellana-based-on-changes-in-urinary-and-fecal-gonadal-steroid-metabolites
#13
Muren, Satoshi Kusuda, Osamu Doi, Hitomi Naito, Hisashi Hashikawa
The purpose of this study was to evaluate the reproductive status and clarify the reproductive physiology of captive Sichuan golden monkeys. The concentrations of urinary estradiol-3-glucuronide (E2G) and pregnanediol-glucuronide (PdG) or fecal estradiol-17β (E2) and PdG in two females, and fecal testosterone concentrations in a male, were measured continuously using enzyme immunoassays. On the basis of these hormone profiles, the follicular phase, luteal phase, and ovarian cycle were calculated to be 14.7 ± 4...
September 8, 2016: Theriogenology
https://www.readbyqxmd.com/read/27732985/retirement-age-ranges-from-clinical-practice-of-maternal-fetal-medicine-physicians
#14
Bradley D Holbrook, Stephen M Petterson, William F Rayburn
Objectives Retirement of "baby boomer" physicians is a matter of growing concern in light of the shortage of certain physician groups. The objectives of this investigation were to define what constitutes a customary retirement age range of maternal-fetal medicine (MFM) physicians and examine how that compares with other obstetrician-gynecologist (ob-gyn) specialists. Study Design This descriptive study was based on American Medical Association Masterfile survey data from 2010 to 2014. Data from the National Provider Identifier were used to correct for upward bias in reporting retirement ages...
October 12, 2016: American Journal of Perinatology
https://www.readbyqxmd.com/read/27731967/gender-and-sexual-health-infertility
#15
Sarina Schrager
Infertility is common in the United States, with up to 15% of heterosexual couples experiencing difficulty in achieving conception. Family physicians often are the first physicians to evaluate couples attempting to conceive. Evaluation begins with assessment of ovulation, evaluation of anatomic abnormalities, and semen analysis. Many etiologies of anovulation can be managed by family physicians, and clinicians can offer counseling on timing of intercourse and assist patients with lifestyle changes to promote fertility...
October 2016: FP Essentials
https://www.readbyqxmd.com/read/27731904/chinese-herbal-medicine-for-subfertile-women-with-polycystic-ovarian-syndrome
#16
REVIEW
Kunyan Zhou, Jing Zhang, Liangzhi Xu, Taixiang Wu, Chi Eung Danforn Lim
BACKGROUND: Polycystic ovarian syndrome (PCOS) is one of the most common reproductive endocrinology abnormalities, and affects 5% to 10% of women of reproductive age. Western medicines, such as oral contraceptives, insulin sensitizers and laparoscopic ovarian drilling (LOD), have been used to treat PCOS. Recently, many studies have been published that consider Chinese herbal medicine (CHM) as an alternative treatment for women with PCOS. OBJECTIVES: To assess the efficacy and safety of CHM for subfertile women with PCOS...
October 12, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27714060/serum-metabolomics-of-indian-women-with-polycystic-ovary-syndrome-using-1-h-nmr-coupled-with-a-pattern-recognition-approach
#17
Sourav RoyChoudhury, Biswa Prasanna Mishra, Tila Khan, Ratna Chattopadhayay, Indrani Lodh, Chaitali Datta Ray, Gunja Bose, Himadri S Sarkar, Sudha Srivastava, Mamata V Joshi, Baidyanath Chakravarty, Koel Chaudhury
Polycystic ovary syndrome (PCOS) is one of the most commonly occurring metabolic and endocrinological disorders affecting women of reproductive age. Metabolomics is an emerging field that holds promise in understanding disease pathophysiology. Recently, a few metabolomics based studies have been attempted in PCOS patients; however, none of them have included patients from the Indian population. The main objective of this study was to investigate the serum metabolomic profile of Indian women with PCOS and compare them with controls...
September 15, 2016: Molecular BioSystems
https://www.readbyqxmd.com/read/27679828/mutation-analysis-of-exon1-of-bone-morphogenetic-protein-15-gene-in-iranian-patients-with-polycystic-ovarian-syndrome
#18
Anahita Mehdizadeh, Mohammad Hasan Sheikhha, Seyed Mehdi Kalantar, Bibi Shahnaz Aali, Azam Ghanei
BACKGROUND: With the prevalence of 6-10%, polycystic ovarian syndrome (PCOS) is considered the most common endocrinological disorder affecting women in their reproductive age. It has been suggested that genetic factors participate in the development of PCOS. Follicular development has been considered as one of the impaired processes in PCOS. Bone morphogenetic protein-15 (BMP-15) gene is a candidate gene in follicular development and its variants may play role in pathogenesis of PCOS...
August 2016: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/27678478/mechanisms-in-endocrinology-nutrition-as-a-mediator-of-oxidative-stress-in-metabolic-and-reproductive-disorders-in-women
#19
REVIEW
Evanthia Diamanti-Kandarakis, Olga Papalou, Eleni A Kandaraki, Georgia Kassi
Nutrition can generate oxidative stress and trigger a cascade of molecular events that can disrupt oxidative and hormonal balance. Nutrient ingestion promotes a major inflammatory and oxidative response at the cellular level in the postprandial state, altering the metabolic state of tissues. A domino of unfavorable metabolic changes is orchestrated in the main metabolic organs, including adipose tissue, skeletal muscle, liver and pancreas, where subclinical inflammation, endothelial dysfunction, mitochondrial deregulation and impaired insulin response and secretion take place...
February 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/27662002/electronic-learning-spaced-education-to-facilitate-resident-knowledge-and-guide-program-didactics
#20
Manisha Gandhi, Anitra Beasley, Emily Vinas, Haleh Sangi-Haghpeykar, Susan M Ramin, Charlie C Kilpatrick
OBJECTIVE: To evaluate the use of mobile technology to facilitate resident learning, assess clinical knowledge, and guide curricular development in a busy clinical environment. METHODS: This was a cross-sectional study conducted in a large (N=48) urban obstetrics and gynecology residency program. Question sets were created in the following areas: office gynecology, general obstetrics, gynecologic surgery and urogynecology, maternal-fetal medicine and ultrasonography, reproductive endocrinology and pediatric gynecology, and gynecologic oncology...
October 2016: Obstetrics and Gynecology
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