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https://www.readbyqxmd.com/read/28370781/downregulation-of-genes-related-to-immune-and-inflammatory-response-in-ivf-implantation-failure-cases-under-controlled-ovarian-stimulation
#1
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...
March 30, 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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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...
December 22, 2016: 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
#8
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
#9
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
#10
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
#11
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
#12
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
https://www.readbyqxmd.com/read/27451070/-menopausal-hormonal-therapy-and-cancer-risks
#13
A Lasserre, A Fournier
Estrogen-progestagen menopausal hormonal therapy (MHT) is recognized as carcinogenic to humans. The article presents the associations between MHT and breast, ovary and endometrial cancer risks, in particular according to treatment modalities. If MHT must be prescribed, it is recommended to use the lowest dose for the shortest possible duration. Discussing with the patient the benefits but also the risks and making regular gynecological follow-up are strongly encouraged.
July 2016: Gynécologie, Obstétrique & Fertilité
https://www.readbyqxmd.com/read/27435993/variations-at-regulatory-regions-of-the-milk-protein-genes-are-associated-with-milk-traits-and-coagulation-properties-in-the-sarda-sheep
#14
A Noce, M Pazzola, M L Dettori, M Amills, A Castelló, A Cecchinato, G Bittante, G M Vacca
Regulatory variation at the ovine casein genes could have important effects on the composition and coagulation properties of milk. Herewith, we have partially resequenced the promoters and the 3'-UTR of the four casein genes in 25 Sarda sheep. Alignment of these sequences allowed us to identify a total of 29 SNPs. This level of polymorphism (one SNP every 250 bp) is remarkably high if compared with SNP densities estimated in human genic regions (approximately one SNP per bp). The 29 SNPs identified in our resequencing experiment, plus three previously reported SNPs mapping to the lactalbumin, alpha (LALBA) and β-lactoglobulin (BLG, also known as progestagen-associated endometrial protein, PAEP) genes, were genotyped with a multiplex TaqMan Open Array Real-Time PCR assay in 760 Sarda sheep with records for milk composition and coagulation properties...
December 2016: Animal Genetics
https://www.readbyqxmd.com/read/27423654/-utilization-of-hormone-replacement-therapy-in-spain-trends-in-the-period-2000-2014
#15
Laura Baladé Martínez, Dolores Montero Corominas, Diego Macías Saint-Gerons
BACKGROUND AND OBJECTIVE: The objective of the study was to describe the trends of utilization, supply and prevalence of hormone replacement therapy (HRT) in Spain during the period 2000-2014. METHODS: Annual prevalence of HRT use including the 95% CI was calculated for women aged≥40 using individual data from the national population-based database BIFAP. Annual and total-period consumptions were expressed in defined daily doses (DDD) per 1,000 inhabitants per day and were obtained from the databases of medications dispensed in community pharmacies and charged through official prescriptions to the Spanish National Health System...
October 7, 2016: Medicina Clínica
https://www.readbyqxmd.com/read/27401258/characterization-and-longitudinal-monitoring-of-serum-progestagens-and-estrogens-during-normal-pregnancy-in-the-killer-whale-orcinus-orca
#16
Todd R Robeck, Karen J Steinman, Justine K O'Brien
The secretory patterns of progestagens and estrogens were characterized throughout 28 normal pregnancies until two month post-partum in eleven killer whales. HPLC analysis of serum from different reproductive stages (luteal phase, EARLY, MID, and LATE pregnancy) identified three major immunoreactive progestagen peaks; progesterone (P4), 5α-pregnane-3,20-dione (5α-DHP) and pregnanediol, with 5α-DHP approximately half of that for P4 in the luteal phase, and EARLY, but approximately 2/3 of P4 during MID and LATE pregnancy...
September 15, 2016: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27312927/protected-fatty-acid-supplementation-during-estrus-synchronization-treatment-on-reproductive-parameters-of-dairy-goats
#17
Juliana Dos Santos Kuhner Oliveira, Jeferson Ferreira da Fonseca, Joanna Maria Gonçalves Souza-Fabjan, Luciana Vieira Esteves, Luiz Fernando Rodrigues Feres, Carla Aparecida Florentino Rodrigues, Rodolpho de Almeida Torres Filho, Juliana de Oliveira, Felipe Zandonadi Brandão
This study evaluated the effect of the protected fatty acid inclusion during estrus synchronization on reproductive parameters. Goats (n = 32) received progestagen sponges for 6 days and 200 IU equine chorionic gonadotropin and 30 µg d-cloprostenol were given on Day 5. No difference was found among control (C), 1% protected fatty acid inclusion (C + 1%) or 4% protected fatty acid inclusion (C + 4%) groups, respectively, in estrus (100.0, 100.0 or 90.9%), estrus duration (31.6 ± 12.3; 43...
February 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/27306650/oestrogens-and-progestagens-synthesis-and-action-in-the-brain
#18
REVIEW
M F Rossetti, M J Cambiasso, M A Holschbach, R Cabrera
When steroids, such as pregnenolone, progesterone and oestrogen, are synthesised de novo in neural tissues, they are more specifically referred to as neurosteroids. These neurosteroids bind specific receptors to promote essential brain functions. Pregnenolone supports cognition and protects mouse hippocampal cells against glutamate and amyloid peptide-induced cell death. Progesterone promotes myelination, spinogenesis, synaptogenesis, neuronal survival and dendritic growth. Allopregnanolone increases hippocampal neurogenesis, neuronal survival and cognitive functions...
July 2016: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/27234500/an-in-vitro-investigation-on-the-cytotoxic-and-nuclear-receptor-transcriptional-activity-of-the-mycotoxins-fumonisin-b1-and-beauvericin
#19
Celia Fernández-Blanco, Caroline Frizzell, Maeve Shannon, Maria-Jose Ruiz, Lisa Connolly
Fumonisin B1 (FB1) and beauvericin (BEA) are secondary metabolites of filamentous fungi, which under appropriate temperature and humidity conditions may develop on various foods and feeds. To date few studies have been performed to evaluate the toxicological and endocrine disrupting effects of FB1 and BEA. The present study makes use of various in vitro bioassays including; oestrogen, androgen, progestagen and glucocorticoid reporter gene assays (RGAs) for the study of nuclear receptor transcriptional activity, the thiazolyl blue tetrazolium bromide (MTT) assay to monitor cytotoxicity and high content analysis (HCA) for the detection of pre-lethal toxicity in the RGA and Caco-2 human colon adenocarcinoma cells...
August 22, 2016: Toxicology Letters
https://www.readbyqxmd.com/read/27155731/immunolocalization-of-e-cadherin-and-%C3%AE-catenin-in-the-cyclic-and-early-pregnant-canine-endometrium
#20
R Payan-Carreira, M A Pires, C Santos, B Ström Holst, J Colaço, H Rodriguez-Martinez
Putative changes in E-cadherin and β-catenin during implantation in dogs are of interest to study, as they are relevant proteins for epithelial integrity. E-cadherin and β-catenin were immunolocalized in the canine endometrium during the estrous cycle and early pregnancy, using monoclonal antibodies. Both proteins were detected in all types of endometrial epithelia (surface epithelium [SE], superficial glandular, and deep glandular epithelia) at all stages of the estrous cycle and in early placental structures...
September 1, 2016: Theriogenology
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