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Reproductive Toxicology

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https://www.readbyqxmd.com/read/28219760/maternal-exposure-to-perfluorooctanoic-acid-inhibits-luteal-function-via-oxidative-stress-and-apoptosis-in-pregnant-mice
#1
Yilu Chen, Ling Zhou, Jingjie Xu, Lu Zhang, Mo Li, Xingxing Xie, Yajuan Xie, Dan Luo, Dalei Zhang, Xiaochun Yu, Bei Yang, Haibin Kuang
Perfluorooctanoic acid (PFOA) is a synthetic perfluorinated compound, which has been reported to exert adverse effect on the pregnancy. However, whether it is associated with alteration of luteal function remains unknown. Mice were administered PFOA by gavage from gestational days (GD) 1 to 7 or 13. PFOA treatment did not significantly affect numbers of embryo implantation. Nevertheless, on GD 13, 10mg/kg PFOA treatment significantly increased numbers of resorbed embryo. Furthermore, PFOA exposure markedly reduced serum progesterone levels but did not affect estradiol levels...
February 17, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28216266/perinatal-administration-of-bisphenol-a-alters-the-expression-of-tight-junction-proteins-in-the-uterus-and-reduces-the-implantation-rate
#2
Annia A Martínez-Peña, Jorge Rivera-Baños, Laura L Méndez-Carrillo, Marcos I Ramírez-Solano, Aarón Galindo-Bustamante, J Carlos Páez-Franco, Morimoto Sumiko, Lorenza González-Mariscal, Cruz M Esther, C Adriana Mendoza-Rodríguez
We studied the effect of bisphenol-A (BPA) administration to rats, during the perinatal period, on the fertility of F1 generation and on the expression of tight junction (TJ) proteins in the uterus during early pregnancy. Pregnant Wistar dams (F0) received: BPA-L (0.05mg/kg/day), BPA-H (20mg/kg/day) or vehicle, from gestational day (GD) 6 to lactation day 21. F1 female pups were mated at 3 months of age and sacrificed at GD 1, 3, 6, and 7. Serum hormonal levels, ovulation rate, number of implantation sites and expression of TJ proteins in the uterus of F1 females were evaluated...
February 16, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28216407/multidrug-resistance-transporter-1-and-breast-cancer-resistance-protein-protect-against-ovarian-toxicity-and-are-essential-in-ovarian-physiology
#3
Lynae M Brayboy, Nathalie Oulhen, Sokunvichet Long, Niesha Voigt, Christina Raker, Gary M Wessel
Ovarian protection from chemotoxicity is essential for reproductive health. Our objective is to determine the role of ATP-dependent, Multidrug Resistance Transporters (MDRs) in this protection. Previously we identified MDR-dependent cytoprotection from cyclophosphamide in mouse and human oocytes by use of MDR inhibitors. Here we use genetic deletions in MDR1a/b/BCRP of mice to test MDR function in ovarian somatic cells and find that mdr1a/b/bcrp-/- mice had significantly increased sensitivity to cyclophosphamide...
February 12, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28216406/the-relationship-between-maternal-corticosteroid-use-and-orofacial-clefts-a-meta-analysis
#4
Wen-Lin Xiao, Xiao-Ya Liu, Yan-Shan Liu, Dai-Zun Zhang, Ling-Fa Xue
The aim was to evaluate the relationship between maternal corticosteroid use during first trimester of pregnancy and risk of orofacial clefts (OC). The overall findings showed a certain association between maternal corticosteroid use and occurrence of OC, compared with non-users (OR=1.16 [95% CI: 1.01-1.33]). When study type was considered this association was significant only for case-control studies (OR=1.22 [95% CI: 1.02-1.47]), and not for cohort studies (OR=1.09 [95% CI: 0.88-1.34]) when there are many confounders (dose, route of application, disease etc...
February 12, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28192182/male-reproductive-toxicity-of-crvi-in-utero-exposure-to-crvi-at-the-critical-window-of-testis-differentiation-represses-the-expression-of-sertoli-cell-tight-junction-proteins-and-hormone-receptors-in-adult-f1-progeny-rats
#5
Kathiresh M Kumar, Mariajoseph Michael Aruldhas, Sheerin L Banu, Balaji Sadasivam, Ganapathy Vengatesh, Karthik M Ganesh, Shobana Navaneethabalakrishnan, Ajith Kumar Navin, Felicia Mary Michael, Sankar Venkatachalam, Jone A Stanley, Ilangovan Ramachandran, Sakhila K Banu, Mohammad Abdulkader Akbarsha
The effect of gestational exposure to CrVI (occupational/environmental pollutant and target to Sertoli cells(SC)) was tested in a rat model during the testicular differentiation from the bipotential gonad may interrupt spermatogenesis by disrupting SC tight junctions(TJ) and it's proteins and hormone receptors. Pregnant Wistar rats were exposed to 50/100/200ppm CrVI through drinking water during embryonic days 9-14. On Postnatal day 120, testes were subjected to ion exchange chromatographic analysis revealed increased level of CrIII in SCs and germ cells, serum and testicular interstitial fluid(TIF)...
February 9, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28192181/in-vitro-development-of-zebrafish-vascular-networks
#6
Muhammad Ibrahim, Michael K Richardson
A major limitation to culturing tissues and organs is the lack of a functional vascular network in vitro. The zebrafish possess many useful properties which makes it a promising model for such studies. Unfortunately, methods of culturing endothelial cells from this species are not well characterised. Here, we tried two methods (embryoid body culture and organ explants from transgenic zebrafish kdrl:GFP embryos) to develop in vitro vascular networks. In the kdrl:GFP line, endothelial cells expresses green fluorescent protein, which allows to track the vascular development in live cultures...
February 9, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28189605/transcriptomics-analysis-of-early-embryonic-stem-cell-differentiation-under-osteoblast-culture-conditions-applications-for-detection-of-developmental-toxicity
#7
Xinrong Chen, Tao Han, J Edward Fisher, Wafa Harrouk, Melissa S Tassinari, Gwenn Merry, Daniel Sloper, James C Fuscoe, Deborah K Hansen, Amy L Inselman
The mouse embryonic stem cell test (mEST) is a promising in vitro assay for predicting developmental toxicity. In the current study, early differentiation of D3 mouse embryonic stem cells (mESCs) under osteoblast culture conditions and embryotoxicity of cadmium sulfate were examined. D3 mESCs were exposed to cadmium sulfate for 24, 48 or 72hours, and whole genome transcriptional profiles were determined. The results indicate a track of differentiation was identified as mESCs differentiate. Biological processes that were associated with differentiation related genes included embryonic development and, specifically, skeletal system development...
February 8, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28188906/response-to-correspondence-by-mortazavi-et-al-re-self-reported-mobile-phone-use-and-semen-parameters-among-men-from-a-fertility-clinic
#8
LETTER
Ryan C Lewis, Lidia Mínguez-Alarcón, John D Meeker, Paige L Williams, Gabor Mezei, Jennifer B Ford, Russ Hauser
No abstract text is available yet for this article.
February 7, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28188905/self-reported-mobile-phone-use-and-semen-parameters-among-men-from-a-fertility-clinic
#9
LETTER
S M J Mortazavi, Sar Mortazavi, Maryam Paknahad
No abstract text is available yet for this article.
February 7, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28188904/exposure-to-cadmium-during-in-vitro-maturation-at-environmental-nanomolar-levels-impairs-oocyte-fertilization-through-oxidative-damage-a-large-animal-model-study
#10
N A Martino, G Marzano, M Mangiacotti, O Miedico, A M Sardanelli, A Gnoni, G M Lacalandra, A E Chiaravalle, E Ciani, L Bogliolo, F Minervini, F Pizzi, M E Dell'Aquila
Cadmium is a highly toxic heavy metal with negative effects on oocyte fertilization. The aim of this study was to analyse whether cadmium-induced impairment of fertilization is caused by mitochondria dysfunction and oxidative stress in the cumulus-oocyte complex (COC). Preliminarily, 19 trace element levels were measured in ovaries from juvenile and adult ewes and age-related cadmium ovarian bioaccumulation at nanomolar concentrations was found. COCs from juvenile and adult ewes, exposed during in vitro maturation to 1nM or 100nM CdCl2, and subjected to in vitro fertilization showed significantly lower fertilization rates in exposed COCs compared with controls...
February 7, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28163209/low-level-environmental-metals-and-metalloids-and-incident-pregnancy-loss
#11
Germaine M Buck Louis, Melissa M Smarr, Rajeshwari Sundaram, Amy J Steuerwald, Katherine J Sapra, Zhaohui Lu, Patrick J Parsons
Environmental exposure to metals and metalloids is associated with pregnancy loss in some but not all studies. We assessed arsenic, cadmium, mercury, and lead concentrations in 501 couples upon trying for pregnancy and followed them throughout pregnancy to estimate the risk of incident pregnancy loss. Using Cox proportional hazard models, we estimated hazard ratios (HR) and 95% confidence intervals (CIs) for pregnancy loss after covariate adjustment for each partner modeled individually then we jointly modeled both partners' concentrations...
February 2, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28161597/angiogenesis-related-genes-and-thalidomide-teratogenesis-in-humans-an-approach-on-genetic-variation-and-review-of-past-in-vitro-studies
#12
Thayne Woycinck Kowalski, Lucas Rosa Fraga, Luciana Tovo-Rodrigues, Maria Teresa Vieira Sanseverino, Mara Helena Hutz, Lavínia Schuler-Faccini, Fernanda Sales Luiz Vianna
Thalidomide embryopathy (TE) has affected more than 10,000 babies worldwide. The hypothesis of antiangiogenesis as the teratogenic mechanism of thalidomide has been investigated in several experimental models; but, in humans, it has only been accessed by in vitro studies. Here, we hypothesized the effect of thalidomide upon angiogenesis-related molecules or proteins, previously identified in human embryonic cells, through the in silico STRING-tool. We also investigated ten polymorphisms in angiogenesis-related genes in 38 Brazilian TE individuals and 136 non-affected Brazilians...
February 1, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28143724/effects-of-chronic-perfluorooctanoic-acid-pfoa-at-low-concentration-on-morphometrics-gene-expression-and-fecundity-in-zebrafish-danio-rerio
#13
Carrie E Jantzen, Fatima Toor, Kate A Annunziato, Keith R Cooper
Perfluorooctanoic acid (PFOA) is a persistent, toxic, anthropogenic chemical recalcitrant to biodegradation. Based on previous studies in lower and higher vertebrates, it was hypothesized that chronic, sub-lethal, embryonic exposure to PFOA in zebrafish (Danio rerio) would adversely impact fish development, survival, and fecundity. Zebrafish embryo/sac-fry were water exposed to 2.0 or 0nM PFOA from 3 to 120hpf, and juvenile to adult cohorts were fed spiked food (8 pM) until 6 months. After chronic exposure, PFOA exposed fish were significantly smaller in total weight and length...
January 29, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28130151/a-new-mammalian-model-system-for-thalidomide-teratogenesis-monodelphis-domestica
#14
Daniel Sorensen, Amanda Sackett, Daniel J Urban, Jennifer Maier, Neil Vargesson, Karen E Sears
From 1957 to 1962, thalidomide caused birth defects in >10,000 children. While the drug was pulled from the market, thalidomide is currently prescribed to treat conditions including leprosy. As a result, a new generation of babies with thalidomide defects is being born in the developing world. This represents a serious problem, as the mechanisms by which thalidomide disrupts development remain unresolved. This lack of resolution is due, in part, to the absence of an appropriate mammalian model for thalidomide teratogenesis...
January 24, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28115265/in-utero-and-lactational-exposure-to-di-2-ethylhexyl-phthalate-increased-the-susceptibility-of-prostate-carcinogenesis-in-male-offspring
#15
Xiu Wang, Yong Wang, Qi Song, Jianhui Wu, Yan Zhao, Shunheng Yao, Zuyue Sun, Yunhui Zhang
di(2-ethylhexyl) phthalate (DEHP) is one of the most commonly-used plasticizers and can exert estrogen-like effects and anti-androgen-like effects after entering the body. The critical windows for DEHP exposure are in utero and during lactation. There's substantial evidence that hormonally active environmental estrogen perturbations in early life are associated with prostate carcinogenesis susceptibility later in life. In order to explore the effects of in utero and lactational exposure to DEHP on the male offspring's susceptibility to prostate carcinogenesis, we established a rat model of developmental estrogenization: pregnant rats in three treatment groups were treated with DEHP at 0...
January 20, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28111094/peri-pubertal-high-caffeine-exposure-increases-ovarian-estradiol-production-in-immature-rats
#16
Yoojin Kwak, Hyeonhae Choi, Jaeman Bae, Yun-Young Choi, Jaesook Roh
Chronic caffeine consumption exerts a negligible effect on the reproductive organs of normal adult females, but it is not known whether this is also true for children and adolescents. Here, we investigated the effects of high caffeine exposure on sexual maturation and ovarian estradiol production in immature female rats. Immature female SD rats were divided into controls and caffeine groups fed 120 and 180mg/kg/day for 4 or 8 weeks. There was a significant delay in vaginal opening in the caffeine-fed groups...
January 19, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28111093/effects-of-perfluorinated-chemicals-on-thyroid-function-markers-of-ovarian-reserve-and-natural-fertility
#17
Natalie M Crawford, Suzanne E Fenton, Mark Strynar, Erin P Hines, David A Pritchard, Anne Z Steiner
Perfluorinated chemicals (PFCs) can act as endocrine-disrupting chemicals, but there has been limited study of their effects on ovarian reserve or fecundability. 99 women, 30-44 years old, without infertility were followed until pregnancy. Initially, serum was evaluated for Antimullerian hormone (AMH), thyroid hormones: thyroid stimulating hormone (TSH), thyroxine (T4), free thyroxine (fT4), and triiodothyronine (T3), and PFCs: perfluorooctanoate (PFOA), perfluorooctane sulfonate (PFOS), perfluorononanoic acid (PFNA), and perfluorohexanesulfonic acid (PFHxS)...
January 19, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28104404/dibutyl-phthalate-impairs-steroidogenesis-and-a-subset-of-lh-dependent-genes-in-cultured-human-mural-granulosa-cell-in-vitro
#18
Michal Adir, Catherine M H Combelles, Abdallah Mansur, Libby Ophir, Ariel Hourvitz, Raoul Orvieto, Jehoshua Dor, Ronit Machtinger
Exposure to di-butyl phthalate (DBP) exerts negative effects on female fertility in animal models, but human studies remain limited. Here, the effects of DBP exposure on mural granulosa cell function were investigated in primary cultures from women undergoing in vitro fertilization. Cultured cells treated with various doses of DBP (0, 0.01μg/mL, 0.1μg/mL, 1μg/mL, 10μg/mL, or 100μg/mL) for 48h were assessed using enzyme-linked immunosorbent assay and qRT-PCR. Treatment with 100μg/mL DBP resulted in significantly lower 17β-estradiol and progesterone production (p<0...
January 16, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28088501/a-review-of-reproductive-and-developmental-toxicity-of-silver-nanoparticles-in-laboratory-animals
#19
REVIEW
Makoto Ema, Hirokazu Okuda, Masashi Gamo, Kazumasa Honda
We summarized significant effects reported in the literature on the reproductive and developmental toxicity of silver nanoparticles (AgNPs) in laboratory animals. AgNPs showed testicular/sperm toxicity in males and ovarian and embryonic toxicity in females. Maternal injection of AgNPs delayed physical development and impaired cognitive behavior in offspring. Ag was accumulated in the testes after administration of AgNPs. AgNPs were identified in the visceral yolk sac after administration during early gestation in mice...
January 11, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28087314/a-protective-role-of-cumulus-cells-after-short-term-exposure-of-rat-cumulus-cell-oocyte-complexes-to-lifestyle-or-environmental-contaminants
#20
Kelly A Campen, Kenneth P McNatty, Janet L Pitman
Ovarian follicular fluid provides a potential reservoir for exogenous compounds that may adversely affect oocyte quality. This study examined the effects of common lifestyle and environmental contaminants, namely bisphenol-A (BPA), caffeine, 3,4-methylenedioxymethamphetamine (MDMA), nicotine and Δ(9)-tetrahydrocannabinol (THC) on gap junction genes (Gja1, Gja4) and proteins (GJA1), glucose metabolism genes (Gfpt1, Pfkp) and oocyte growth factor genes (Bmp15, Gdf9), as well as gap junction transfer rate, in rat cumulus-oocyte complexes (COCs)...
January 10, 2017: Reproductive Toxicology
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