keyword
MENU ▼
Read by QxMD icon Read
search

Inhibin

keyword
https://www.readbyqxmd.com/read/29163975/on-the-descent-of-the-epididymo-testicular-unit-cryptorchidism-and-prevention-of-infertility
#1
REVIEW
Faruk Hadziselimovic
This comprehensive review provides in-depth coverage of progress made in understanding the molecular mechanisms underlying cryptorchidism, a frequent pathology first described in about 1786 by John Hunter. The first part focuses on the physiology, embryology, and histology of epididymo-testicular descent. In the last 20 years epididymo-testicular descent has become the victim of schematic drawings with an unjustified rejection of valid histological data. This part also includes discussion on the roles of gonadotropin-releasing hormone, fibroblast growth factors, Müllerian inhibiting substance, androgens, inhibin B, and insulin-like 3 in epididymo-testicular descent...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/29156341/urinary-bisphenol-a-concentrations-are-associated-with-reproductive-parameters-in-young-men
#2
Evdochia Adoamnei, Jaime Mendiola, Fernando Vela-Soria, Mariana F Fernández, Nicolás Olea, Niels Jørgensen, Shanna H Swan, Alberto M Torres-Cantero
Bisphenol A (BPA) is a pervasive environmental toxicant with known reproductive effects on sperm parameters and hormone levels. Several observational studies have investigated the associations between BPA exposure and male reproductive function, but findings are inconsistent. The objective of this study was to assess the associations between urinary BPA concentrations and semen quality and reproductive hormone levels in a cross-sectional study with 215 healthy young university students (18-23 years old), investigated between 2010 and 2011 in Southern Spain (Murcia Region)...
November 17, 2017: Environmental Research
https://www.readbyqxmd.com/read/29149247/quantitative-proteomic-profiling-of-bovine-follicular-fluid-during-follicle-development
#3
Rodrigo de Andrade Ferrazza, Elizabeth Moreira Dos Santos Schmidt, Monika Mihm Carmichael, Fabiana Ferreira de Souza, Richard Burchmore, Roberto Sartori, Peter David Eckersall, João Carlos Pinheiro Ferreira
Bovine follicular fluid (FF) constitutes the microenvironment of follicles and includes various biologically active proteins. We performed a study involving 18 healthy non-lactating Holstein cows to determine the protein expression profile of FF at key-stages of follicular development. Follicles were individually aspirated in vivo at pre-deviation (F1∼7.0mm); deviation (F1∼8.5mm); post-deviation (F1∼12.0mm); and pre-ovulatory stages of follicle development, which were confirmed by measurement of follicular estradiol and progesterone concentrations...
November 15, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29148520/an-in-vitro-prototype-of-a-porcine-biomimetic-testis-like-cell-culture-system-a-novel-tool-for-the-study-of-reassembled-sertoli-and-leydig-cells
#4
Iva Arato, Giovanni Luca, Francesca Mancuso, Catia Bellucci, Cinzia Lilli, Mario Calvitti, Barbara C Hansen, Domenico Milardi, Giuseppe Grande, Riccardo Calafiore
At present, there is no reliable in vitro assembled prepubertal testis-like biomimetic organ culture system designed to assess the functional effects of human gonadotropins on Sertoli and Leydig cells. Spermatogenesis is regulated by endocrine, paracrine, and juxtacrine factors (testicular cross-talk), mainly orchestrated by gonadotropins such as luteinizing hormone (LH) and follicle-stimulating hormone (FSH) that play a pivotal role by stimulating Leydig and Sertoli cells, respectively. The aim of our study was to set up an in vitro prepubertal porcine bioengineered construct as a new model for experimental studies on reassembled Sertoli and Leydig cells...
November 10, 2017: Asian Journal of Andrology
https://www.readbyqxmd.com/read/29147967/association-of-inflammatory-bowel-disease-with-arthritis-evidence-from-in-silico-gene-expression-patterns-and-network-topological-analysis
#5
Anukriti Verma, Pallavi Somvanshi, Shafiul Haque, Bhawna Rathi, Shivani Sharda
Inflammatory bowel disease (IBD) is an idiopathic prolonged ailment accountable for inflammatory conditions of the intestine. Moreover, arthritis is responsible for joints' stiffness and painful inflammation. IBD shows certain articular extra-intestinal manifestations associating IBD with arthritis. IBD associated arthritis is found to be linked with ankylosing spondylitis (AS). The present study insights for the potential and putative drug targets and biomarkers of IBD associated with arthritis using in silico approaches...
November 17, 2017: Interdisciplinary Sciences, Computational Life Sciences
https://www.readbyqxmd.com/read/29141508/anti-m%C3%A3-llerian-hormone-amh-may-stall-ovarian-cortex-function-through-modulation-of-hormone-receptors-other-than-the-amh-receptor
#6
Laura Detti, Nicole M Fletcher, Ghassan M Saed, Irene Peregrin-Alvarez, Rebecca A Uhlmann
OBJECTIVE: To test whether recombinant anti-Müllerian hormone (AMH) can inhibit ovarian cortex function by modulating the expression of other hormone receptors. MATERIALS AND METHODS: Pilot experimental study with ovarian cortex obtained from 5 patients. Immediately after explant, the ovarian cortex specimens were divided into 5 equal fragments. One fragment was flash-frozen (uncultured) and 4 were incubated for 48 hours at 37°C in a pH-adjusted gamete buffer medium with increasing AMH concentrations of 0, 5, 25, and 50 ng/mL...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/29133069/relaxin-2-connecting-peptide-pro-rlx2-levels-in-second-trimester-serum-samples-to-predict-preeclampsia
#7
Miriam Rehfeldt, Elizabeth Eklund, Joachim Struck, Andrea Sparwasser, Barbara O'Brien, Glenn E Palomaki, Josef Köhrle, Andreas Bergmann, Geralyn Lambert-Messerlian
OBJECTIVES: Preeclampsia is a serious complication of pregnancy, threatening fetal and maternal health. The aim of our study is to examine the association between preeclampsia and the connecting peptide of the pregnancy hormone relaxin (pro-RLX2) as a potential new biochemical marker. STUDY DESIGN: This is a nested case/control study derived from the cohort of pregnancies delivering at Women & Infants Hospital. Cases were identified at a clinic or by hospital codes, and individually confirmed by record review...
November 7, 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29132723/ovarian-sex-cord-stromal-tumours-and-their-mimics
#8
REVIEW
Robert H Young
Sex cord-stromal tumours of the ovary include many of the most morphologically intriguing ovarian neoplasms and albeit many of them are rare, they factor into the differential diagnosis more often than their frequency might suggest. The most common malignant form, the adult granulosa cell tumour, may grossly simulate various surface epithelial neoplasms. Microscopically, confusion with endometrioid carcinoma may occur because the cords and microfollicles of the granulosa cell tumour may be mimicked by endometrioid carcinoma and the latter may have pale nuclei with nuclear grooves...
November 10, 2017: Pathology
https://www.readbyqxmd.com/read/29126319/effects-of-vitamin-d-supplementation-on-semen-quality-reproductive-hormones-and-live-birth-rate-a-randomized-clinical-trial
#9
Martin Blomberg Jensen, Jacob Gerner Lawaetz, Jørgen Holm Petersen, Anders Juul, Niels Jørgensen
Context: Animal models and cross-sectional cohort studies have suggested a beneficial role for vitamin D in male reproduction. Objective: Determine the effect of vitamin D and calcium supplementation on semen quality in infertile men with serum 25-hydroxyvitamin-D (25OHD)≤ 50 nmol/l. Design: A single centre, triple-blinded, randomized clinical trial. Participants: 1427 infertile men were screened to include 330. 1002 men did not meet inclusion criteria and 95 did not wish to participate...
November 3, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29112593/age-related-changes-in-luteal-dynamics-preliminary-associations-with-antral-follicular-dynamics-and-hormone-production-during-the-human-menstrual-cycle
#10
Angela Baerwald, Heidi Vanden Brink, Caitlin Hunter, Denae Beuker, Hyun Lim, Chel Hee Lee, Donna Chizen
OBJECTIVE: The aim of the study was to test the hypothesis that the development of luteal phase dominant follicles (LPDFs) as women age is associated with abnormal luteal function. METHODS: Luteal and antral follicle diameter were quantified in ovulatory women of midreproductive age (MRA; 18-35 y; n = 9) and advanced reproductive age (ARA; 45-55 y; n = 16) every 1 to 3 days during one complete interovulatory interval. Blood was drawn at each visit and assayed for progesterone, estradiol, inhibin A, follicle-stimulating hormone, and luteinizing hormone...
November 6, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/29111388/activin-over-expression-in-the-testis-of-mice-lacking-the-inhibin-%C3%AE-subunit-gene-is-associated-with-androgen-deficiency-and-regression-of-the-male-reproductive-tract
#11
Rukmali Wijayarathna, David M de Kretser, Andreas Meinhardt, Ralf Middendorff, Helen Ludlow, Nigel P Groome, Kate A Loveland, Mark P Hedger
Regionalised interaction of the activins, follistatin and inhibin was investigated in the male reproductive tract of mice lacking the inhibin α-subunit (Inha(-/-)). Serum and intratesticular activin B, although not activin A and follistatin, were increased in Inha(-/-) mice at 25 days of age, but all three proteins were elevated at 56 days. None of these proteins were altered within the epididymis and vas deferens at either age. At 25 days, histology of the epididymis and vas deferens was similar to wild-type...
October 27, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29102564/gonadotropin-regulation-by-pulsatile-gnrh-signaling-and-gene-expression
#12
REVIEW
George A Stamatiades, Ursula B Kaiser
The precise orchestration of hormonal regulation at all levels of the hypothalamic-pituitary-gonadal axis is essential for normal reproductive function and fertility. The pulsatile secretion of hypothalamic gonadotropin-releasing hormone (GnRH) stimulates the synthesis and release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) by pituitary gonadotropes. GnRH acts by binding to its high affinity seven-transmembrane receptor (GnRHR) on the cell surface of anterior pituitary gonadotropes. Different signaling cascades and transcriptional mechanisms are activated, depending on the variation in GnRH pulse frequency, to stimulate the synthesis and release of FSH and LH...
November 2, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29094225/effect-of-zinc-and-melatonin-on-oxidative-stress-and-serum-inhibin-b-levels-in-a-rat-testicular-torsion-detorsion-model
#13
Atilla Semercioz, Abdulkerim Kasim Baltaci, Rasim Mogulkoc, Mustafa Cihat Avunduk
The present study was aimed to examine the effects of 3-week zinc and melatonin administration on testicular tissue injury and serum Inhibin-B levels caused by unilateral testicular torsion-detorsion in rats. The study was performed on 60 Wistar Albino-type adult male rats. The animals were allocated to 6 groups in equal numbers. 1. Control; 2. Sham; 3. Ischemia-reperfusion; 4. Zinc + ischemia-reperfusion; 5. Melatonin + ischemia-reperfusion; 6. Zinc + melatonin + ischemia-reperfusion. Zinc and melatonin were administered before ischemia-reperfusion at doses of 5 and 3 mg/kg respectively, by intraperitoneal route for a period of 3 weeks...
December 2017: Biochemical Genetics
https://www.readbyqxmd.com/read/29091146/how-polymorphic-markers-contribute-to-genetic-diseases-in-different-populations-the-study-of-inhibin-a-for-premature-ovarian-insufficiency
#14
Denise Maria Christofolini, Emerson Barchi Cordts, Fernando Santos-Pinheiro, Erika Azuma Kayaki, Mayla Cristina Fernandes Dornas, Monise de Castro Santos, Bianca Bianco, Caio Parente Barbosa
OBJECTIVE: To verify the incidence of the G679A mutation in exon 2 of the gene inhibin alpha (INHA), in women with secondary amenorrhea and diagnosis of premature ovarian insufficiency, and in controls. METHODS: A 5mL sample of peripheral blood was collected from all study participants in an EDTA tube and was used for DNA extraction. For the patient group, 5mL of blood were also collected in a tube containing heparin for karyotype, and 5mL were collected in a dry tube for follicle stimulant hormone dosage...
July 2017: Einstein
https://www.readbyqxmd.com/read/29055783/prenatal-organochlorine-pesticide-exposure-and-the-disruption-of-steroids-and-reproductive-hormones-in-cord-blood-the-hokkaido-study
#15
Atsuko Araki, Chihiro Miyashita, Takahiko Mitsui, Houman Goudarzi, Futoshi Mizutani, Youichi Chisaki, Sachiko Itoh, Seiko Sasaki, Kazutoshi Cho, Kimihiko Moriya, Nobuo Shinohara, Katsuya Nonomura, Reiko Kishi
Certain organochlorine pesticides (OCPs) are designated as persistent organic pollutants and are regulated in many countries. The effects of OCPs on pediatric endocrinology are a concern; however, only limited data exist from human studies on maternal OCP exposure and its effects on infants' hormone levels. This study was conducted as part of the Hokkaido Study Sapporo Cohort, a prospective birth cohort study in Japan. Participants included 514 women who enrolled at 23-35weeks of gestation between 2002 and 2005; maternal blood samples were collected in late pregnancy, and 29 OCPs were measured...
January 2018: Environment International
https://www.readbyqxmd.com/read/29050936/t%C3%AE-riii-is-induced-by-tcr-signaling-and-downregulated-in-foxp3-regulatory-t-cells
#16
Sandra Ortega-Francisco, Marisol de la Fuente-Granada, Evelyn K Alvarez Salazar, Lizbeth Airais Bolaños-Castro, Gabriela Fonseca-Camarillo, Roxana Olguin-Alor, Germán R Alemán-Muench, Fernando López-Casillas, Chander Raman, Eduardo A García-Zepeda, Gloria Soldevila
TGF-β type III receptor (TβRIII) is a co-receptor for TGFβ family members required for high-affinity binding of these ligands to their receptors, potentiating their cellular functions. TGF-βs, Bone Morphogenetic Proteins (BMP2/4) and Inhibins/Activins regulate different checkpoints during T cell differentiation. We have previously reported that TβRIII modulates T cell development by protecting developing thymocytes from apoptosis, however the role of this co-receptor in peripheral lymphocytes still remains elusive...
December 9, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29049585/association-between-biomarkers-of-ovarian-reserve-and-infertility-among-older-women-of-reproductive-age
#17
Anne Z Steiner, David Pritchard, Frank Z Stanczyk, James S Kesner, Juliana W Meadows, Amy H Herring, Donna D Baird
Importance: Despite lack of evidence of their utility, biomarkers of ovarian reserve are being promoted as potential markers of reproductive potential. Objective: To determine the associations between biomarkers of ovarian reserve and reproductive potential among women of late reproductive age. Design, Setting, and Participants: Prospective time-to-pregnancy cohort study (2008 to date of last follow-up in March 2016) of women (N = 981) aged 30 to 44 years without a history of infertility who had been trying to conceive for 3 months or less, recruited from the community in the Raleigh-Durham, North Carolina, area...
October 10, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29029632/fatal-haemorrhage-and-neoplastic-thrombosis-in-a-captive-african-lion-panthera-leo-with-metastatic-testicular-sex-cord-stromal-tumour
#18
Omar Antonio Gonzales-Viera, Angélica María Sánchez-Sarmiento, Natália Coelho Couto de Azevedo Fernandes, Juliana Mariotti Guerra, Rodrigo Albergaria Ressio, José Luiz Catão-Dias
BACKGROUND: The study of neoplasia in wildlife species contributes to the understanding of cancer biology, management practices, and comparative pathology. Higher frequencies of neoplasms among captive non-domestic felids have been reported most commonly in aging individuals. However, testicular tumours have rarely been reported. This report describes a metastatic testicular sex cord-stromal tumour leading to fatal haemorrhage and thrombosis in a captive African lion (Panthera leo). CASE PRESENTATION: During necropsy of a 16-year-old male African lion, the left testicle and spermatic cord were found to be intra-abdominal (cryptorchid), semi-hard and grossly enlarged with multiple pale-yellow masses...
October 13, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/29029242/germ-cell-neoplasia-in-situ-and-preserved-fertility-despite-suppressed-gonadotropins-in-a-patient-with-testotoxicosis
#19
Li Juel Mortensen, Martin Blomberg Jensen, Peter Christiansen, Ann-Margrethe Rønholt, Anne Jørgensen, Hanne Frederiksen, John E Nielsen, Anand C Loya, Birgitte Grønkær Toft, Niels E Skakkebæk, Ewa Rajpert-De Meyts, Anders Juul
Context: Testotoxicosis is an autosomal dominant, male-limited disorder. Activating mutations in the Luteinizing Hormone Receptor gene (LHCGR) cause high autonomous testosterone secretion resulting in early-onset peripheral precocious puberty. Little is known about long-term consequences of testotoxicosis. Case Description: We present a rare case of a patient followed for 25 years with two remarkable outcomes; preserved fertility and germ cell neoplasia in situ (GCNIS)...
October 5, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29027807/biochemistry-of-the-menopause
#20
John W Honour
The life of a human female is characterized from teenage years by monthly menstruation which ceases (the menopause) typically between the age of 40 and 60 years. The potential for reproduction declines and ceases as the ovaries become depleted of follicles. A transition period in mid-life, for 2 to 10 years, when menstruation is less regular is called the perimenopause. The menopause is associated with a significant decline in plasma concentrations of sex hormones, an increase in the concentrations of the gonadotrophins and changes in other hormones such as the inhibins...
January 1, 2017: Annals of Clinical Biochemistry
keyword
keyword
22481
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"