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https://www.readbyqxmd.com/read/29031924/evaluation-of-cervical-mucus-and-reproductive-efficiency-of-seasonally-anovular-dairy-goats-after-short-term-progestagen-based-estrous-induction-protocols-with-different-gonadotropins
#1
Jeferson F Fonseca, Joanna M G Souza-Fabjan, Maria Emilia F Oliveira, Renata C Cruz, Luciana V Esteves, Maria Pia S L Matos de Paiva, Felipe Z Brandão, Antônio B Mancio
The use of three different gonadotropins was tested for estrous induction in dairy goats during the non-breeding season. All does received an injection of 30 μg of d-cloprostenol and intravaginal sponges containing 60mg of medroxyprogesterone acetate (MAP) for 6 d plus 20 IU of porcine FSH (pFSH), 200 IU of eCG or 250 IU of hCG 24h before sponge removal. In Experiment 1 (n=24), ovarian ultrasound parameters were recorded and cervical mucus was evaluated daily for 5 d after sponge removal or until ovulation...
October 11, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/28973766/ewes-carrying-the-booroola-and-vacaria-prolificacy-alleles-respond-differently-to-ovulation-induction-with-equine-chorionic-gonadotrophin
#2
J C F Moraes, C J H Souza
The magnitude of ovulation rate (OR) after hormonal induction in sheep should be considered when prolific genotypes are used. We investigated for the first time the effect of the Vacaria allele and its combined effect with the Booroola prolificacy mutation on OR after hormonal treatment during breeding and anoestrous season. A hundred forty-nine Ile de France crossbred ewes, raised in natural pastures in South Brazil, were used to evaluate the OR after treatment with progestagen (MAP) followed or not by equine chorionic gonadotrophin (eCG) treatment (MAP + eCG)...
September 21, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28971522/half-a-century-of-equine-reproduction-research-and-application-a-veterinary-tour-de-force
#3
REVIEW
Twink W R Allen, S Wilsher
Over the past 50 years, pregnancy rates in Thoroughbred mares have risen from 70 to >90% and foaling rates from 55 to >80%. Some of the significant pharmacological treatments and diagnostic methods which have driven this marked improvement in breeding efficiency are reviewed. They include the application of artificial lighting to hasten the onset of ovulatory oestrous cyclicity in early Spring, rapid steroid hormone assays to aid in determining the stage and normality of the mare's cycle, prostaglandin analogues, synthetic progestagens and Gonadotrophin-releasing Hormone (GnRH) analogues to better control and manipulate her cycle to good effect, transrectal ultrasound scanning to monitor follicle growth, endometrial architecture and ovulation and to allow accurate, early pregnancy diagnosis thereby enabling successful ablation of one of twin conceptuses...
October 3, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28852505/non-invasive-endocrine-monitoring-indicates-seasonal-variations-in-gonadal-hormone-metabolites-in-dholes-cuon-alpinus
#4
Jaruwan Khonmee, Suvichai Rojanasthien, Chatchote Thitaram, Jureerat Sumretprasong, Anurut Aunsusin, Chawin Chaisongkram, Nucharin Songsasen
To date, there is no information on reproductive endocrinology of dholes (Cuon alpinus). The objectives of the present study were as follows: (i) to characterize longitudinal profiles of gonadal steroids; and (ii) to examine the relationship between gonadal hormones and sexual behaviours in dholes. Three breeding pairs and two bachelor males were included in the study. Among these, four animals (2 males and 2 females; 4 years old) were imported from The Netherlands to Thailand 3 months before the study onset; the remaining individuals (3 males and 1 female; 5-7 years old) were native born...
2017: Conservation Physiology
https://www.readbyqxmd.com/read/28838337/mass-spectrometric-identification-of-diagnostic-markers-for-chronic-prostatitis-in-seminal-plasma-by-analysis-of-seminal-plasma-protein-clinical-samples
#5
A Rokka, A Mehik, P Tonttila, M Vaarala
There are few specific diagnostic markers for chronic prostatitis. Therefore, we used mass spectrometry to evaluate differences in seminal plasma protein expression among patients with prostatitis and young and middle-aged healthy controls. We analysed pooled seminal plasma protein samples from four prostatitis patients (two pools), three young controls (one pool), and three middle-aged controls (one pool). The samples were analysed by liquid chromatography-tandem mass spectrometry. Of the 349 proteins identified, 16 were differentially expressed between the two control pools...
August 15, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28827068/endometrium-and-steroids-a-pathologic-overview
#6
REVIEW
Francisca Plaza-Parrochia, Carmen Romero, Luis Valladares, Margarita Vega
Normal endometrial function requires of cell proliferation and differentiation; therefore, disturbances in these processes could lead to pathological entities such as hyperplasia and endometrial adenocarcinoma, where cell proliferation is increased. The development of these pathologies is highly related to alterations in the levels and/or action of sexual steroids. In the present review, it has been analyzed how steroids, particularly estrogens, androgens and progestagens are involved in the etiopathogenesis of hyperplasia and endometrial endometrioid adenocarcinoma...
October 2017: Steroids
https://www.readbyqxmd.com/read/28710978/relationships-between-pops-biometrics-and-circulating-steroids-in-male-polar-bears-ursus-maritimus-from-svalbard
#7
Tomasz M Ciesielski, Ingunn Tjelta Hansen, Jenny Bytingsvik, Martin Hansen, Elisabeth Lie, Jon Aars, Bjørn M Jenssen, Bjarne Styrishave
The aim of this study was to determine the effects of persistent organic pollutants (POPs) and biometric variables on circulating levels of steroid hormones (androgens, estrogens and progestagens) in male polar bears (Ursus maritimus) from Svalbard, Norway (n = 23). Levels of pregnenolone (PRE), progesterone (PRO), androstenedione (AN), dehydroepiandrosterone (DHEA), testosterone (TS), dihydrotestosterone (DHT), estrone (E1), 17α-estradiol (αE2) and 17β-estradiol (βE2) were quantified in polar bear serum by gas chromatography tandem mass spectrometry (GC-MS/MS), while POPs were measured in plasma...
November 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28687109/prophylactic-therapy-for-hereditary-angioedema
#8
REVIEW
Hilary Longhurst, Emily Zinser
Long-term prophylaxis is needed in many patients with hereditary angioedema and poses many challenges. Attenuated androgens are effective in many but are limited by side effect profiles. There is less evidence for efficacy of tranexamic acid and progestagens; however, the small side effect profile makes tranexamic acid an option for prophylaxis in children and progestagens an option for women. C1 inhibitor is beneficial, but at present requires intravenous delivery and may need dose titration for maximum efficacy...
August 2017: Immunology and Allergy Clinics of North America
https://www.readbyqxmd.com/read/28370781/downregulation-of-genes-related-to-immune-and-inflammatory-response-in-ivf-implantation-failure-cases-under-controlled-ovarian-stimulation
#9
Amruta D S Pathare, Kusum Zaveri, Indira Hinduja
PROBLEM: Implantation failure (IF) even after the good-quality embryo transfer (ET) is main obstacle in in vitro fertilization (IVF). We aim to study the genomics of endometrial receptivity in IF patients under controlled ovarian stimulation (COS) during which ET is generally practised in IVF. METHOD OF STUDY: Endometrial gene expression profiling in IF patients (n=10) and oocyte donors (n=8) were compared during window of implantation under COS by microarray. Enrichment analysis of microarray data was performed to determine dysregulated pathways...
July 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28360001/assessment-of-urban-stream-sediment-pollutants-entering-estuaries-using-chemical-analysis-and-multiple-bioassays-to-characterise-biological-activities
#10
Svenja Boehler, Ruben Strecker, Patrick Heinrich, Erik Prochazka, Grant L Northcott, James M Ataria, Frederic D L Leusch, Thomas Braunbeck, Louis A Tremblay
Stormwater contaminants are a major source of often neglected environmental stressors because of the emphasis placed on the management of municipal and industrial wastewaters. Stormwater-derived pollutants in sediments from two New Zealand estuaries was characterised by analytical chemistry and bioassays. Contaminants were extracted from sediment using accelerated solvent extraction (ASE), recovered and concentrated by solid phase extraction (SPE), and analysed for polycyclic aromatic hydrocarbons (PAHs), selected metals, and musk fragrances...
March 27, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28179152/the-six-most-widely-used-selective-serotonin-reuptake-inhibitors-decrease-androgens-and-increase-estrogens-in-the-h295r-cell-line
#11
Cecilie Hurup Hansen, Lizette Weber Larsen, Amalie Møller Sørensen, Bent Halling-Sørensen, Bjarne Styrishave
Selective serotonin reuptake inhibitors (SSRIs) used as first line of treatment in major depressive disorder (MDD) are known to exert negative effects on the endocrine system and fertility. The aim of the present study was to investigate the possible endocrine disrupting effect of six SSRIs, fluoxetine, paroxetine, citalopram and its active enantiomer escitalopram, sertraline and fluvoxamine using the OECD standardized and validated human in vitro adrenocortical H295R cell assay. All the major steroids, including progestagens, corticosteroids, androgens and estrogens were analysed using a fully validated LC-MS/MS method...
February 5, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28092737/complex-molecular-changes-induced-by-chronic-progestogens-exposure-in-roach-rutilus-rutilus
#12
Gabor Maasz, Zita Zrinyi, Peter Takacs, Sandor Lovas, Istvan Fodor, Tibor Kiss, Zsolt Pirger
In our previous study, we measured 0.23-13.67ng/L progestogens (progesterone, drospirenone, levonorgestrel) in natural waters in the catchment area of the largest shallow lake of Central Europe, Lake Balaton. Progestogen contaminations act as potent steroids with mixed progestagenic, androgenic and mild estrogenic effects that is why our aim was to investigate the morphological and molecular effects of mixture of progesterone, drospirenone, and levonorgestrel in environmentally relevant (10ng/L) and higher (50 and 500ng/L) exposure concentrations in common roach, Rutilus rutilus...
May 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28091600/urinary-profiles-of-luteinizing-hormone-estrogen-and-progestagen-during-the-estrous-and-gestational-periods-in-giant-pandas-ailuropda-melanoleuca
#13
Kailai Cai, Shangmian Yie, Zhihe Zhang, Juan Wang, Zhigang Cai, Li Luo, Yuliang Liu, Hairui Wang, He Huang, Chengdong Wang, Xiangming Huang, Jingchao Lan, Rong Hou
Luteinizing hormone (LH) is one of the main pituitary hormones that regulate ovulation, however its role has not been studied in giant panda. In this study, we developed an ELISA method for the detection of panda urinary LH. We analyzed urinary hormones of 24 female pandas during 36 breeding periods, we found females could easily be impregnated if the first mating occurred within 10 hours after LH peak. We also found the patterns of the ratios of urinary LH and progestagen in pandas that bred and successfully gave birth were significantly different from those that bred but failed to give birth...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28063291/glucogenic-treatment-creates-an-optimal-metabolic-milieu-for-the-conception-period-in-ewes
#14
C Porcu, V Pasciu, S Succu, E Baralla, M E Manca, E Serra, G G Leoni, M Dattena, G C Bomboi, G Molle, S Naitana, F Berlinguer
This study determined the influence of a short-term glucogenic nutritional treatment on circulating concentrations of glucose, insulin, insulin-like growth factor 1 (IGF-1), nonesterified fatty acids (NEFA), and urea, and on their correspondent levels in follicular fluid (FF) collected 12 h after the end of the treatment. After estrous synchronization with intravaginal progestagen-impregnated sponges, 20 Sarda ewes were randomly allocated into two experimental groups (GLU and WAT) and, from day 7 to day 10 (day 0 = day of sponge removal), the GLU group was gavaged with a glycogenic mixture, whereas the WAT group was gavaged with water (control group)...
December 11, 2016: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/28017361/analysis-of-the-sensitivity-of-in-vitro-bioassays-for-androgenic-progestagenic-glucocorticoid-thyroid-and-estrogenic-activity-suitability-for-drinking-and-environmental-waters
#15
REVIEW
Frederic D L Leusch, Peta A Neale, Armelle Hebert, Marco Scheurer, Merijn C M Schriks
The presence of endocrine disrupting chemicals in the aquatic environment poses a risk for ecosystem health. Consequently there is a need for sensitive tools, such as in vitro bioassays, to monitor endocrine activity in environmental waters. The aim of the current study was to assess whether current in vitro bioassays are suitable to detect endocrine activity in a range of water types. The reviewed assays included androgenic (n=11), progestagenic (n=6), glucocorticoid (n=5), thyroid (n=5) and estrogenic (n=8) activity in both agonist and antagonist mode...
February 2017: Environment International
https://www.readbyqxmd.com/read/27727256/-venous-thromboembolism-in-critically-ill-patients-analysis-of-the-main-age-related-risk-factors-and-definition-of-specific-scores
#16
Manuel Monti, Giovanni Maria Vincentelli, Giuseppe Murdolo, Giuliano Bertazzoni, Francesco Rocco Pugliese, Francesco Borgognoni, Maria Pia Ruggieri, Raffaele Landolfi
INTRODUCTION: Venous thromboembolism (VTE) is the third most common cardiovascular illness after acute coronary syndrome and stroke and and the most common preventable cause of hospital-related death. Several studies have demonstrated a significant reduction of fatal pulmonary embolism attributed to the introduction of thromboprophylactic measures and changes in hospital practices. However, the influence of some demographical variables, especially age, has largely been under appreciated...
September 2016: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/27692342/per-and-polyfluoroalkyl-substances-pfass-new-endocrine-disruptors-in-polar-bears-ursus-maritimus
#17
Kathrine Eggers Pedersen, Robert J Letcher, Christian Sonne, Rune Dietz, Bjarne Styrishave
Per- and polyfluoroalkyl substances (PFASs) are emerging in the Arctic and accumulate in brain tissues of East Greenland (EG) polar bears. In vitro studies have shown that PFASs might possess endocrine disrupting abilities and therefore the present study was conducted to investigate potential PFAS induced alterations in brain steroid concentrations. The concentrations of eleven steroid hormones were determined in eight brain regions from ten EG polar bears. Pregnenolone (PRE), the dominant progestagen, was found in mean concentrations of 5-47ng/g (ww) depending on brain region...
September 27, 2016: Environment International
https://www.readbyqxmd.com/read/27618599/hypopituitarism-and-goitre-as-endocrine-manifestation-of-langerhans-cell-histiocytosis-lch-case-report
#18
Elzbieta Skowronska-Jozwiak, Stanislaw Sporny, Joanna Szymanska-Duda, Dobromila Baranska, Andrzej Lewinski
Langerhans cell histiocytosis (LCH) in adults is a rare disorder of unknown etiology characterized by monoclonal proliferation of Langerhans cells. It belongs to dendritic cell disorders and occurs in 1-2 adults per million. The most common endocrine manifestation of classical LCH is associated with the posterior pituitary, with clinical symptoms of diabetes insipidus. Less than 80 reported cases of LCH involving the thyroid gland have been published so far. We present the case of a 39 years old woman with 10 years history of diabetes insipidus and secondary amenorrhoea, which appeared after second delivery...
July 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/27590094/the-effect-of-the-intracervical-administration-of-fsh-or-lh-on-the-levels-of-hyaluronan-cox2-and-cox2-mrna-in-the-cervix-of-the-nonpregnant-ewe
#19
RANDOMIZED CONTROLLED TRIAL
Sukanya Leethongdee, Muhammad Khalid, Rex J Scaramuzzi
During the periovulatory period, the cervix relaxes in response to changes in circulating concentrations of reproductive hormones. The present study investigated the role of gonadotrophins in cervical function by examining the expression of cyclooxygenase-2 (COX2) and COX2 mRNA and the concentration of hyaluronan (HA) in the cervix, after intracervical treatment with either FSH or LH. Eighteen ewes were assigned to four groups. They were then treated with commercial intravaginal progestagen sponges and eCG to synchronize their estrous cycles...
December 2016: Theriogenology
https://www.readbyqxmd.com/read/27541482/transcriptomic-and-physiological-changes-in-eastern-mosquitofish-gambusia-holbrooki-after-exposure-to-progestins-and-anti-progestagens
#20
Erica K Brockmeier, Philip D Scott, Nancy D Denslow, Frederic D L Leusch
Endocrine active compounds (EACs) remain an important group of chemicals that require additional evaluation to determine their environmental impacts. While estrogens and androgens were previously demonstrated to impact organisms during environmental exposures, progestagens have recently been shown to have strong impacts on aquatic organisms. To gain an understanding of the impacts of these types of chemicals on aquatic species, experiments evaluating the mechanisms of action of progestagen exposure were conducted with the Eastern Mosquitofish (Gambusia holbrooki)...
October 2016: Aquatic Toxicology
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