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https://www.readbyqxmd.com/read/28220271/anandamide-oxidative-metabolism-induced-endoplasmic-reticulum-stress-and-apoptosis
#1
M Almada, B M Fonseca, C Amaral, M Diniz-da-Costa, G Correia-da-Silva, N Teixeira
The Endocannabinoid System (ECS) has been recognized as a crucial player in human reproduction. Changes in the levels of anandamide (AEA), the main endocannabinoid (eCB), negatively affect reproductive events, such as implantation, decidualization and placentation. Cyclooxygenase-2 (COX-2) is a major enzyme expressed in the endometrium and its involvement in female reproductive system has evolved over the last few years. Currently, COX-2 oxidative metabolism is emerging as a key mediator of AEA-induced actions...
February 20, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28214889/regulatory-role-of-mirna-375-in-expression-of-bmp15-gdf9-receptors-and-its-effect-on-proliferation-and-apoptosis-of-bovine-cumulus-cells
#2
Hongyan Chen, Chang Liu, Hao Jiang, Yan Gao, Mingqiang Xu, Jiawei Wang, Siyuan Liu, Yao Fu, Xulei Sun, Jiajun Xu, Jiabao Zhang, Lisheng Dai
BACKGROUND: Bone morphogenetic protein 15 (BMP15) and growth differentiation factor 9 (GDF9) are members of the transforming growth factor beta (TGF-β) superfamily. Through autocrine and paracrine mechanisms, these two factors can regulate cell differentiation, proliferation, and other functions in the ovary locally. Furthermore, GDF9 and BMP15 play vital roles in follicular growth, atresia, ovulation, fertilization, reproduction, and maintenance. Numerous studies have demonstrated a synergy between BMP15 and GDF9...
January 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28209492/reproductive-considerations-in-the-setting-of-chronic-viral-illness
#3
REVIEW
Brent M Hanson, Jessie A Dorais
Special considerations must be taken when patients with human immunodeficiency virus (HIV), Hepatitis B, or Hepatitis C desire to achieve pregnancy. Patients with chronic viral illnesses desire children at rates similar to the general population, and options are available to decrease both vertical transmission and viral transmission between partners. Preconception counseling or consultation with fertility specialists is imperative in patients with HIV, Hepatitis B, and Hepatitis C so that reproductive goals can be addressed and optimized...
February 13, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28207285/improvements-in-clinical-trials-information-will-improve-the-reproductive-health-and-fertility-of-cancer-patients
#4
Angela Dauti, Brigitte Gerstl, Serena Chong, Orin Chisholm, Antoinette Anazodo
There are a number of barriers that result in cancer patients not being referred for oncofertility care, which include knowledge about reproductive risks of antineoplastic agents. Without this information, clinicians do not always make recommendations for oncofertility care. The objective of this study was to describe the level of reproductive information and recommendations that clinicians have available in clinical trial protocols regarding oncofertility management and follow-up, and the information that patients may receive in clinical trials patient information sheets or consent forms...
February 16, 2017: Journal of Adolescent and Young Adult Oncology
https://www.readbyqxmd.com/read/28196109/associations-between-pon1-enzyme-activities-in-human-ovarian-follicular-fluid-and-serum-specimens
#5
Keewan Kim, Michael S Bloom, Victor Y Fujimoto, Richard W Browne
The importance of high-density lipoprotein (HDL) particle components to reproduction is increasingly recognized, including the constituent paraoxonase 1 (PON1). However, the reliability characteristics of PON1 enzymes in ovarian follicular fluid (FF) as biomarkers for clinical and epidemiologic studies have not been described. Therefore, we characterized PON1 enzymes in FF and serum and assessed the impact of the PON1 Q192R polymorphism on associations between enzyme activities in two compartments. We also evaluated associations between HDL particle size and enzyme activities...
2017: PloS One
https://www.readbyqxmd.com/read/28193084/value-of-endometrial-echopattern-at-hcg-administration-day-in-predicting-ivf-outcome
#6
Firoozeh Ahmadi, Farnaz Akhbari, Mina Zamani, Fariba Ramezanali, Rezvaneh Cheraghi
BACKGROUND: Assisted reproductive  treatment  (ART)  cycle  is an  expensive  procedure with low implantation and pregnancy rate; therefore, it is necessary to evaluate the predictors of success in these patients. OBJECTIVE: The relationship between endometrial echopattern and pregnancy rate was evaluated. METHODS: The endometrial  echopattern  was  analyzed  prospectively  on  the  day  of  human chorionic  gonadotropin  (HCG) administration  in  280  in  vitro  fertilization/intracytoplasmic  sperm  injection (IVF/ICSI) cycles with 8-14 mm endometrial thickness at Royan institute in 2013-2014...
February 2017: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/28188594/extracellular-micrornas-in-follicular-fluid-and-their-potential-association-with-oocyte-fertilization-and-embryo-quality-an-exploratory-study
#7
Ronit Machtinger, Rodosthenis S Rodosthenous, Michal Adir, Abdallah Mansour, Catherine Racowsky, Andrea A Baccarelli, Russ Hauser
PURPOSE: The purpose of this study is to determine the profile of extracellular microRNAs (exmiRNAs) in follicular fluid (FF) and explore their association with fertilization potential and embryo quality. METHODS: We collected FF from single follicles containing mature oocytes from 40 women undergoing IVF and we screened for the expression of 754 exmiRNAs in FF using the TaqMan OpenArray® qPCR platform. To determine the association of exmiRNAs and IVF outcomes, we compared their expression levels in FF samples that differ by fertilization status (normally, abnormally, and failed to fertilize) and embryo quality (top vs...
February 10, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28185602/impaired-hypothalamic-pituitary-testicular-axis-activity-spermatogenesis-and-sperm-function-promote-infertility-in-males-with-lead-poisoning
#8
Jason Gandhi, Rafael J Hernandez, Andrew Chen, Noel L Smith, Yefim R Sheynkin, Gargi Joshi, Sardar Ali Khan
Lead poisoning is a stealthy threat to human physiological systems as chronic exposure can remain asymptomatic for long periods of time before symptoms manifest. We presently review the biophysical mechanisms of lead poisoning that contribute to male infertility. Environmental and occupational exposure of lead may adversely affect the hypothalamic-pituitary-testicular axis, impairing the induction of spermatogenesis. Dysfunction at the reproductive axis, namely testosterone suppression, is most susceptible and irreversible during pubertal development...
February 10, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28182716/lyzl6-an-acidic-bacteriolytic-human-sperm-related-protein-plays-a-role-in-fertilization
#9
Peng Huang, Wenshu Li, Zhifang Yang, Ning Zhang, Yixin Xu, Jianying Bao, Deke Jiang, Xianping Dong
Lysozyme-like proteins (LYZLs) belong to the c-type lysozyme/α-lactalbumin family and are selectively expressed in the mammalian male reproductive tract. Two members, human sperm lysozyme-like protein (SLLP) -1 and mouse LYZL4, have been reported to contribute to fertilization but show no bacteriolytic activity. Here, we focused on the possible contribution of LYZL6 to immunity and fertilization. In humans, LYZL6 was selectively expressed by the testis and epididymis and became concentrated on spermatozoa...
2017: PloS One
https://www.readbyqxmd.com/read/28174013/update-on-fertility-restoration-from-prepubertal-spermatogonial-stem-cells-how-far-are-we-from-clinical-practice
#10
Maria Grazia Giudice, Francesca de Michele, Jonathan Poels, Maxime Vermeulen, Christine Wyns
Fertility preservation in prepubertal boys facing gonadotoxic treatment is still at the experimental stage. Nevertheless cryopreservation of immature testicular tissue (ITT) obtained by small testicular biopsy is being increasingly proposed in reproductive care clinics for this purpose. Different approaches to in vivo or in vitro mature spermatogonial stem cells (SSCs) contained in ITT have been studied: autografting of testicular tissue pieces, transplantation of one's own purified germ cell suspensions, and in vitro maturation (IVM) for subsequent use of sperm for intra cytoplasmic sperm injection (ICSI)...
February 2, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28166947/effects-of-heat-stress-on-some-reproductive-parameters-of-male-cavie-cavia-porcellus-and-mitigation-strategies-using-guava-psidium-guajava-leaves-essential-oil
#11
Ferdinand Ngoula, Maryvonne Guemdjo Tekam, Augustave Kenfack, Cyrille D'Alex Tadondjou Tchingo, Sandrine Nouboudem, Herman Ngoumtsop, Borice Tsafack, Alexis Teguia, Pierre Kamtchouing, Marco Galeotti, Joseph Tchoumboue
Climate changes, particularly the increase of temperature are among the main causes behind the decline of fertility in humans as well as animals. In this study, the effects of heat stress on some reproductive parameters of male cavies and mitigation strategies using guava leaves essential oil (GLEO) were studied. For this purpose, 40 male cavies aged 2.5-3 months and weighing between 348 and 446g were divided into 4 groups of 10 animals each and subjected to the following temperatures: Ambient temperature (20-25°C) for the control group, 35°C for group 1, 45°C for group 2 and 45°C+100µl GLEO/kg body weight, administered by gavage to animals for group 3...
February 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28152410/semen-quality-and-insulin-like-factor-3-associations-with-urinary-and-seminal-levels-of-phthalate-metabolites-in-adult-males
#12
Wei-Hsiang Chang, Meng-Hsing Wu, Hsien-An Pan, Pao-Lin Guo, Ching-Chang Lee
Certain phthalates have adverse effects on male reproductive functions in animals, and potentially affect human testicular function and spermatogenesis, but little is known about the active mechanisms. We measured the urinary and seminal phthalate metabolites and explored their associations on insulin-like factor 3 (INSL3) and semen quality. Urine, blood, and semen samples were collected from the male partners of subfertile (n = 253) and fertile (n = 37) couples in a reproductive center in southern Taiwan...
January 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28137753/is-human-fecundity-changing-a-discussion-of-research-and-data-gaps-precluding-us-from-having-an-answer
#13
REVIEW
Melissa M Smarr, Katherine J Sapra, Alison Gemmill, Linda G Kahn, Lauren A Wise, Courtney D Lynch, Pam Factor-Litvak, Sunni L Mumford, Niels E Skakkebaek, Rémy Slama, Danelle T Lobdell, Joseph B Stanford, Tina Kold Jensen, Elizabeth Heger Boyle, Michael L Eisenberg, Paul J Turek, Rajeshwari Sundaram, Marie E Thoma, Germaine M Buck Louis
Fecundity, the biologic capacity to reproduce, is essential for the health of individuals and is, therefore, fundamental for understanding human health at the population level. Given the absence of a population (bio)marker, fecundity is assessed indirectly by various individual-based (e.g. semen quality, ovulation) or couple-based (e.g. time-to-pregnancy) endpoints. Population monitoring of fecundity is challenging, and often defaults to relying on rates of births (fertility) or adverse outcomes such as genitourinary malformations and reproductive site cancers...
January 30, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28135285/dysregulation-of-in-vitro-decidualization-of-human-endometrial-stromal-cells-by-insulin-via-transcriptional-inhibition-of-forkhead-box-protein-o1
#14
Dorina Ujvari, Ivika Jakson, Shabnam Babayeva, Daniel Salamon, Bence Rethi, Sebastian Gidlöf, Angelica Lindén Hirschberg
Insulin resistance and compensatory hyperinsulinemia are characteristic features of obesity and polycystic ovary syndrome, and both are associated with reduced fertility and implantation. There is little knowledge about the effect of insulin on the decidualization process and previous findings are contradictory. We investigated the effect of insulin on the regulation of forkhead box protein O1 (FOXO1), one of the most important transcription factors during decidualization. Endometrial stromal cells were isolated from six healthy, regularly menstruating women and decidualized in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28133576/the-impact-of-parental-investment-on-lifetime-reproductive-success-in-iceland
#15
Robert F Lynch, Emily C Lynch
BACKGROUND: Demonstrating the impact that parents have on the fitness of their children is a crucial step towards understanding how parental investment has affected human evolution. Parents not only transfer genes to their children, they also influence their environments. By analyzing reproductive patterns within and between different categories of close relatives, this study provides insight into the genetic and environmental effects that parents have on the fitness of their offspring...
2017: PeerJ
https://www.readbyqxmd.com/read/28131789/the-transovarial-transmission-in-the-dynamics-of-dengue-infection-epidemiological-implications-and-thresholds
#16
Hyun Mo Yang
The anthropophilic and peridomestic female mosquito Aedes aegypti bites humans to suck blood to maturate fertilized eggs, during which dengue virus can be spread between mosquito and human populations. Besides this route of transmission, there is a possibility of dengue virus being passed directly to offspring through transovarial (or vertical) transmission. The effects of both horizontal and transovarial transmission routes on the dengue virus transmission are assessed by mathematical modeling. From the model, the reproduction number is obtained and the contribution of transovarial transmission is evaluated for different levels of horizontal transmission...
January 25, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28130435/cumulative-live-birth-rates-after-one-art-cycle-including-all-subsequent-frozen-thaw-cycles-in-1050-women-secondary-outcome-of-an-rct-comparing-gnrh-antagonist-and-gnrh-agonist-protocols
#17
M Toftager, J Bogstad, K Løssl, L Prætorius, A Zedeler, T Bryndorf, L Nilas, A Pinborg
STUDY QUESTION: Are cumulative live birth rates (CLBRs) similar in GnRH-antagonist and GnRH-agonist protocols for the first ART cycle including all subsequent frozen-thaw cycles from the same oocyte retrieval? SUMMARY ANSWER: The chances of at least one live birth following utilization of all fresh and frozen embryos after the first ART cycle are similar in GnRH-antagonist and GnRH-agonist protocols. WHAT IS KNOWN ALREADY: Reproductive outcomes of ART treatment are traditionally reported as pregnancies per cycle or per embryo transfer...
January 26, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28126412/prenatal-exposure-to-an-environmentally-relevant-phthalate-mixture-disrupts-reproduction-in-f1-female-mice
#18
Changqing Zhou, Liying Gao, Jodi A Flaws
Phthalates are used in a large variety of products, such as building materials, medical devices, and personal care products. Most previous studies on the toxicity of phthalates have focused on single phthalates, but it is also important to study the effects of phthalate mixtures because humans are exposed to phthalate mixtures. Thus, we tested the hypothesis that prenatal exposure to an environmentally relevant phthalate mixture adversely affects female reproduction in mice. To test this hypothesis, pregnant CD-1 dams were orally dosed with vehicle (tocopherol-stripped corn oil) or a phthalate mixture (20 and 200μg/kg/day, 200 and 500mg/kg/day) daily from gestational day 10 to birth...
March 1, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28120818/pregnancy-and-menopause-in-patients-with-systemic-lupus-erythematosus-and-or-antiphospholipid-syndrome-practical-guide-from-eular
#19
Roberta Vagelli, Chiara Tani, Marta Mosca
Over the last few decades, in reproductive medicine have allowed an improvement in the management and outcome of pregnancy in connective tissue diseases (CTD), such as Systemic progress Lupus Erythematosus and Antiphospholipid Syndrome; however, pregnancy and other related issues represent a crucial moment for patients and their family and some unmet needs are still present. In routine clinical practise, health professionals involved in the care of SLE and/or APS patients need to consider many aspects of the reproductive life of patients, involving not only pregnancy and family planning but also fertility, contraception, cancer surveillance and menopause...
January 25, 2017: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/28118765/lines
#20
Jacqui O'kane
I wrote this poem while marveling at the birth of my now 4-year-old daughter. My husband Stephen and I had tried to conceive for several months, and we were overjoyed when Sophie finally arrived. Embarking on the fertility journey again - this time with deeper awareness of my own subfertility - I reflect anew on the treasures and travails of pregnancy. Specifically, I have noticed that my greatest hopes hinge on the most miniscule lines of a home pregnancy test. That such small lines could subsume sublime significance is a wonder to me...
January 24, 2017: Human Fertility: Journal of the British Fertility Society
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