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https://www.readbyqxmd.com/read/28728138/first-trimester-urinary-bisphenol-a-concentration-in-relation-to-anogenital-distance-an-androgen-sensitive-measure-of-reproductive-development-in-infant-girls
#1
Emily S Barrett, Sheela Sathyanarayana, Omar Mbowe, Sally W Thurston, J Bruce Redmon, Ruby H N Nguyen, Shanna H Swan
INTRODUCTION: Evidence from animal models suggests that prenatal exposure to bisphenol A (BPA), a ubiquitous endocrine-disrupting chemical, is associated with adverse reproductive outcomes in females. Exposure during early gestation, a critical period for reproductive development, is of particular concern. Anogenital distance (AGD) is a sensitive biomarker of the fetal hormonal milieu and a measure of reproductive toxicity in animal models. In some studies, the daughters of BPA-exposed dams have shorter AGD than controls...
July 11, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28728047/early-life-co-exposures-to-a-real-world-pah-mixture-and-hypoxia-result-in-later-life-and-next-generation-consequences-in-medaka-oryzias-latipes
#2
Jingli Mu, Melissa Chernick, Wu Dong, Richard T Di Giulio, David E Hinton
Acute effects of individual and complex mixtures of polycyclic aromatic hydrocarbons (PAHs) are well documented in vertebrate species. Hypoxia in fish reduces metabolic rate and reproduction. However, less is known about the later life consequences stemming from early-life exposure to PAHs or hypoxia, particularly their co-exposure. To address this, medaka (Oryzias latipes) embryos were exposed to a complex PAH mixture sediment extract from the Elizabeth River, VA (ERSE) at concentrations of 0.1, 0.5, or 1...
June 27, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28727765/defining-the-target-and-the-effect-of-imatinib-on-the-filarial-c-abl-homologue
#3
Elise M O'Connell, Olena Kamenyeva, Sara Lustigman, Aaron Bell, Thomas B Nutman
BACKGROUND: Previously we demonstrated the micro- and macrofilaricidal properties of imatinib in vitro. Here we use electron and multiphoton microscopy to define the target of imatinib in the adult and microfilarial stages of Brugia malayi, and assess the effects of pharmacologically relevant levels of imatinib on the adult parasites. METHODS: After fixation of adult B. malayi males and females, sections were stained with polyclonal rabbit anti-c-Abl antibody (or isotype control) and imaged with multiphoton fluorescent microscopy...
July 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28727104/a-major-gene-for-host-response-to-porcine-reproductive-and-respiratory-syndrome-is-not-unfavorably-associated-with-overall-performance-under-nonchallenging-conditions-in-commercial-pig-lines
#4
J R Dunkelberger, P K Mathur, M S Lopes, E F Knol, J C M Dekkers
A QTL for host response to porcine reproductive and respiratory syndrome (PRRS) was identified in a previous study. The SNP WUR10000125 (WUR) is used as a tag SNP for this QTL. The favorable (B) allele at this SNP is in low frequency in commercial populations, possibly because this allele is unfavorably associated with an important trait under nonchallenging conditions and, therefore, may have been selected against. Therefore, objectives of this study were to estimate the effect of WUR on traits under selection in commercial lines under nonchallenging conditions and to estimate the effect of WUR genotype of parents on performance of crossbred progeny in a commercial-like environment...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727004/physiology-and-endocrinology-symposium-postnatal-reproductive-development-and-the-lactocrine-hypothesis
#5
F F Bartol, A A Wiley, A F George, D J Miller, C A Bagnell
Maternal effects on development can program cell fate and dictate offspring phenotype. Such effects do not end at birth, but extend into postnatal life through signals communicated from mother to offspring in first milk (colostrum). Transmission of bioactive factors from mother to offspring as a specific consequence of nursing defines a lactocrine mechanism. The female reproductive tract is not fully formed at birth (postnatal day = PND 0). Data for ungulates and mice indicate that disruption of development during neonatal life can have lasting effects on the form and function of uterine tissues...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726058/-rational-diagnosis-and-treatment-of-male-infertility
#6
REVIEW
S Kliesch
Male infertility can be diagnosed by evaluation of the (female and) male history with respect to risk factors, and includes scrotal sonography, hormone and semen measurements. In severe male factor infertility, genetic testing is indicated. Treatment options vary between preventive, medical or surgical strategies depending on the underlying diagnosis. Assisted reproductive techniques may be applied as a consequence of the couple's infertility profile.
July 19, 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/28725849/the-role-of-oncofertility-clinics-in-facilitating-access-to-reproductive-specialists
#7
Eduardo Hariton, Pietro Bortoletto, Eden R Cardozo, Ephraim P Hochberg, Mary E Sabatini
PURPOSE: To determine the impact of the establishment of a dedicated oncofertility clinic on the frequency of patient referrals for fertility preservation (FP) consultation and the time from patient referral to consultation. METHODS: A retrospective chart review of all women aged 21 to 44 years with an active cancer diagnosis who were referred for FP consultation from 2011 to 2015. RESULTS: A total of 6895 female patients eligible for FP were seen at the Massachusetts General Hospital (MGH) Cancer Center...
December 2016: Journal of patient experience
https://www.readbyqxmd.com/read/28725636/epithelial-to-mesenchymal-transition-in-the-female-reproductive-tract-from-normal-functioning-to-disease-pathology
#8
REVIEW
Olena Bilyk, Mackenzie Coatham, Michael Jewer, Lynne-Marie Postovit
Epithelial-to-mesenchymal transition (EMT) is a physiological process that is vital throughout the human lifespan. In addition to contributing to the development of various tissues within the growing embryo, EMT is also responsible for wound healing and tissue regeneration later in adulthood. In this review, we highlight the importance of EMT in the development and normal functioning of the female reproductive organs (the ovaries and the uterus) and describe how dysregulation of EMT can lead to pathological conditions, such as endometriosis, adenomyosis, and carcinogenesis...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28725404/age-dependent-male-mating-tactics-in-a-spider-mite-a-life-history-perspective
#9
Yukie Sato, Peter T Rühr, Helmut Schmitz, Martijn Egas, Alexander Blanke
Males often fight with rival males for access to females. However, some males display nonfighting tactics such as sneaking, satellite behavior, or female mimicking. When these mating tactics comprise a conditional strategy, they are often thought to be explained by resource holding potential (RHP), that is, nonfighting tactics are displayed by less competitive males who are more likely to lose a fight. The alternative mating tactics, however, can also be explained by life-history theory, which predicts that young males avoid fighting, regardless of their RHP, if it pays off to wait for future reproduction...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28725385/do-movement-behaviors-identify-reproductive-habitat-sampling-for-wild-turkeys
#10
Mason D Conley, Nathan A Yeldell, Michael J Chamberlain, Bret A Collier
Selection of habitats has regularly been suggested to influence species demography at both local and broad scales. The expectation is that selection behaviors have positive benefits via greater fitness or increased survival. The current paradigm of habitat selection theory suggests a hierarchical process, where an individual first selects where they choose to live (e.g., range) and then searches and selects locations within this range meeting life history needs. Using high-frequency GPS data collected from reproductively active Rio Grande (n = 21) and Eastern (n = 23) wild turkeys, we evaluated a long-standing theory for ground-nesting galliformes, in that movements during the prenesting period are behaviorally focused on sampling available habitats to optimize the selection of nesting sites...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28725379/field-estimates-of-parentage-reveal-sexually-antagonistic-selection-on-body-size-in-a-population-of-anolis-lizards
#11
Mary C Duryea, Patrick Bergeron, Zachary Clare-Salzler, Ryan Calsbeek
Sexual dimorphism evolves when selection favors different phenotypic optima between the sexes. Such sexually antagonistic selection creates intralocus sexual conflict when traits are genetically correlated between the sexes and have sex-specific optima. Brown anoles are highly sexually dimorphic: Males are on average 30% longer than females and 150% heavier in our study population. Viability selection on body size is known to be sexually antagonistic, and directional selection favors large male size whereas stabilizing selection constrains females to remain small...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28725359/major-benefits-of-guarding-behavior-in-subsocial-bees-implications-for-social-evolution
#12
Michael Mikát, Kateřina Černá, Jakub Straka
Parental care is a behavior that increases the growth and survival of offspring, often at a cost to the parents' own survival and/or future reproduction. In this study, we focused on nest guarding, which is one of the most important types of extended parental care; we studied this behavior in two solitary bee species of the genus Ceratina with social ancestors. We performed the experiment of removing the laying female, who usually guards the nest after completing its provisioning, to test the effects of nest guarding on the offspring survival and nest fate...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28725099/changes-in-employment-uncertainty-and-the-fertility-intention-realization-link-an-analysis-based-on-the-swiss-household-panel
#13
Doris Hanappi, Valérie-Anne Ryser, Laura Bernardi, Jean-Marie Le Goff
How do changes in employment uncertainty matter for fertility? Empirical studies on the impact of employment uncertainty on reproductive decision-making offer a variety of conclusions, ranging from gender and socio-economic differences in the effect of employment uncertainty on fertility intentions and behaviour, to the effect of employment on changes in fertility intentions. This article analyses the association between a change in subjective employment uncertainty and fertility intentions and behaviour by distinguishing male and female partners' employment uncertainty, and examines the variation in these associations by education...
2017: European Journal of Population
https://www.readbyqxmd.com/read/28724687/direct-and-trans-generational-effects-of-male-and-female-gut-microbiota-in-drosophila-melanogaster
#14
Juliano Morimoto, Stephen J Simpson, Fleur Ponton
There is increasing evidence of the far-reaching effects of gut bacteria on physiological and behavioural traits, yet the fitness-related consequences of changes in the gut bacteria composition of sexually interacting individuals remain unknown. To address this question, we manipulated the gut microbiota of fruit flies, Drosophila melanogaster, by monoinfecting flies with either Acetobacter pomorum (AP) or Lactobacillus plantarum (LP). Re-inoculated individuals were paired in all treatment combinations. LP-infected males had longer mating duration and induced higher short-term offspring production in females compared with AP-infected males...
July 2017: Biology Letters
https://www.readbyqxmd.com/read/28724485/effects-of-breeding-configuration-on-maternal-and-weanling-behavior-in-laboratory-mice
#15
Gillian C Braden, Skye Rasmussen, Sebastien Monette, Ravi J Tolwani
Although numerous studies have evaluated the effect of housing density on the wellbeing of laboratory mice, little is known about the effect of breeding configuration on mouse behavior. The 8th edition of the Guide for the Care and Use of Laboratory Animals lists the recommended minimal floor area per animal for a female mouse and her litter as 51 in.2 We sought to determine the effects of pair, trio, and harem breeding configurations on the maternal and weanling behavior of C57BL/6J (B6) and 129S6/SvEvTac (129) mice on the basis of nest scores and performance in pup retrieval tests, open-field test (OFT), elevated plus maze, and tail suspension test; we concurrently evaluated cage microenvironment, reproductive indices, and anatomic and clinical pathology...
July 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28724213/characterization-of-serum-estradiol-level-and-tissue-estrogen-receptor-immunostaining-with-clinical-response-and-reproductive-factor-changes-in-chinese-female-patients-with-esophageal-squamous-cell-carcinoma
#16
Dongyun Zhang, Jianwei Ku, Ran Liu, Hongfang Wu, Guina Liang, Yan Wei, Peinan Chen, Xueke Zhao, Song Liu, Yin Li, Jianchao Yao, Xin Song, Lidong Wang
Pre-menopausal female patients have a prolonged survival than post-menopausal patients, indicating that estrogen and/or estrogen receptor (ER) may have some biological effects on prognosis. ER expression in cancer tissue has been reported to be a significant prognostic marker in multiple human cancers. However, the prognostic value of estrogen and/or ER on female patients with esophageal squamous cell carcinoma (ESCC) is rarely reported. The present study was undertaken to elucidate the associations of serum estradiol level, tissue estrogen receptor alpha (ERα) and estrogen receptor beta (ERβ) expression with clinical response and reproductive factor changes in 387 female ESCC patients...
July 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28724183/physiological-intra-cytoplasmic-sperm-injection-picsi-outcomes-after-oral-pretreatment-and-semen-incubation-with-myo-inositol-in-oligoasthenoteratozoospermic-men-results-from-a-prospective-randomized-controlled-trial
#17
T Korosi, C Barta, K Rokob, T Torok
OBJECTIVE: The aim of the current study was to evaluate the effect of an oral pretreatment with a mix of myo-inositol (Myo-Ins), folic acid, vitamin E, L-carnitine, L-arginine and selenium (Folandrol, Exeltis, Hungary) and subsequent direct Myo-Ins incubation of spermatozoa before Physiological Intra-Cytoplasmic Sperm Injection (PICSI) procedures in infertile couples due to oligoasthenoteratozoospermia with previous failed PICSI procedures. PATIENTS AND METHODS: We performed a prospective, randomized controlled trial at the Assisted Reproduction Unit of the Kaáli Institute (Győr, Hungary)...
June 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28724173/a-comparative-study-between-myo-inositol-and-metformin-in-the-treatment-of-insulin-resistant-women
#18
K Nas, L Tűű
OBJECTIVE: Insulin resistance (IR) is a common disorder, which can impair female fertility and is characterized by phenotypic heterogeneity. Life-style treatment and insulin sensitizers are commonly used in the management of women with IR and consequent hyperinsulinemia, in order to restore the normal endocrinological and clinical parameters. Metformin (MET) is considered one of the first approaches to this pathology but new evidences are showing promising results using myo-inositol (MYO) in the management of this pathology...
June 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28723963/impact-of-thyroid-function-abnormalities-on-reproductive-hormones-during-menstrual-cycle-in-premenopausal-hiv-infected-females-at-nauth-nnewi-nigeria
#19
Nkiruka Rose Ukibe, Solomon Nwabueze Ukibe, Obiageli Fidelia Emelumadu, Chinedum Charles Onyenekwe, Joseph Eberendu Ahaneku, Anthony Osita Igwegbe, Ifeoma Nwamaka Monago, Amobi Linus Ilika
BACKGROUND: This was a prospective study designed to evaluate the impact of thyroid function abnormalities on reproductive hormones during menstrual cycle in HIV infected females at Nnamdi Azikiwe University Teaching Hospital Nnewi, South-East Nigeria. METHODS: The study randomly recruited 35 Symptomatic HIV infected females and 35 Symptomatic HIV infected females on antiretroviral therapy (HAART) for not less than six weeks from an HIV clinic and 40 apparently heathy control females among the hospital staff of NAUTH Nnewi...
2017: PloS One
https://www.readbyqxmd.com/read/28723842/reduced-neuromuscular-performance-in-amenorrheic-elite-endurance-athletes
#20
Åsa B Tornberg, Anna Melin, Fiona Manderson Koivula, Anders Johansson, Sven Skouby, Jens Faber, Anders Sjödin
INTRODUCTION: Secondary functional hypothalamic amenorrhea (SFHA) is common among female athletes, especially in weight-sensitive sports. The aim of this study was to investigate the link between SFHA and neuromuscular performance in elite endurance athletes. METHODS: Sixteen eumenorrheic (EUM) and 14 SFHA athletes from national teams and competitive clubs participated. Methods included gynecological examination; body composition (DXA);; resting metabolic rate and work efficiency; exercise capacity; knee muscular strength (KMS) and knee muscular endurance (KME); reaction time (RT); blood sampling performed on the 3rd-5th day of the menstrual cycle, and 7-day assessment of energy availability...
July 19, 2017: Medicine and Science in Sports and Exercise
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