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https://www.readbyqxmd.com/read/29149713/adult-exposure-to-bisphenol-a-in-rare-minnow-gobiocypris-rarus-reduces-sperm-quality-with-disruption-of-testicular-aquaporins
#1
Yingying Zhang, Yongjing Guan, Ting Zhang, Cong Yuan, Yan Liu, Zaizhao Wang
Bisphenol A (BPA) is an endocrine disrupter which has adverse effects on male reproduction. Aquaporins (AQPs), well known water-selective channels, play important roles in spermatogenesis and sperm functions. However, whether AQPs participate in the process that BPA induces abnormal sperms has not been investigated to date. In the present study, adult male rare minnows Gobiocypris rarus were exposed to environmentally relevant concentrations BPA (15 and 225 μg/L) for 1, 2 and 3 weeks. Results showed that BPA exposure disrupted sperm motility, increased the percentage of abnormal sperm cells, and decreased sperm tolerance to hypotonic solution and sperm fertilization capacity...
November 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/29149676/high-salt-diet-decreases-reproductive-performance-in-rams-and-down-regulates-gene-expression-of-some-components-of-the-renin-angiotensin-system-in-the-testis
#2
Yi Fang, Rongzhen Zhong, Xuezhao Sun, Daowei Zhou
Although salt-tolerant plants can be used to combat dryland salinity, these plants contain high concentrations of salt (NaCl), which may have deleterious effects if fed to livestock. Twenty-four Merino rams (9 mo of age) with similar body weight were equally allocated to two groups and fed a normal- or high-salt diet (0.5 and 12% NaCl, respectively) for 3 mo. Rams fed the high-salt diet had lower live weight gains, higher water intake, smaller testes (466 ± 48.4 vs 604 ± 51.1 g) and reductions (P <0...
November 10, 2017: Theriogenology
https://www.readbyqxmd.com/read/29149484/comparative-analysis-of-proteomes-between-diabetic-and-normal-human-sperm-insights-into-the-effects-of-diabetes-on-male-reproduction-based-on-the-regulation-of-mitochondria-related-proteins
#3
Tian An, Yue-Fen Wang, Jia-Xian Liu, Yan-Yun Pan, Yu-Fei Liu, Zhong-Chen He, Fang-Fang Mo, Jun Li, Li-Hua Kang, Yu-Jie Gu, Bo-Han Lv, Si-Huan Gao, Guang-Jian Jiang
This study sought to identify sources of the reduced fertility of men with type 2 diabetes mellitus. Significant reductions in semen volume, sperm concentration, and total sperm count were observed in diabetic individuals, while transmission electron microscopy revealed that the structure of mitochondria in the tail of sperm from diabetic patients was damaged. Proteins potentially associated with these sperm defects were identified using proteomics. Isobaric tagging for relative and absolute quantitation labeling and high-performance liquid chromatography-tandem mass spectrometry allowed us to identify 357 proteins significantly differentially expressed in diabetic versus control semen (>1...
November 17, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/29149263/vitamin-d-and-assisted-reproductive-treatment-outcome-a-systematic-review-and-meta-analysis
#4
Justin Chu, Ioannis Gallos, Aurelio Tobias, Bee Tan, Abey Eapen, Arri Coomarasamy
STUDY QUESTION: Is serum vitamin D associated with live birth rates in women undergoing ART? SUMMARY ANSWER: Women undergoing ART who are replete in vitamin D have a higher live birth rate than women who are vitamin D deficient or insufficient. WHAT IS KNOWN ALREADY: Vitamin D deficiency has been associated with an increased risk of abnormal pregnancy implantation as well as obstetric complications such as pre-eclampsia and fetal growth restriction...
November 15, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29149096/-fertility-preservation-in-the-oncology-patient
#5
REVIEW
Anibal Scarella Chamy, César Díaz-García, Sonia Herraiz, Jhenifer Kliemchen Rodrigues
In recent years, medical advances have substantially improved survival of cancer patients, generating growing concern about the quality of life of the survivors. Increased attention has been paid to reproductive problems after oncological treatments. International guidelines on fertility preservation in cancer patients require that healthcare teams discuss, as early as possible, the impact of cancer treatments on fertility and encourage access to fertility preservation techniques. The development of these techniques in women is a recent effort and many patients and health care providers are not familiar with their rapid expansion...
November 16, 2017: Medwave
https://www.readbyqxmd.com/read/29148792/proteomic-markers-of-the-functional-sperm-population-in-bovines-1-comparison-of-low-and-high-density-spermatozoa-following-cryopreservation
#6
Olivier D'Amours, Gilles Frenette, Sylvie Bourassa, Ezequiel Calvo, Patrick Blondin, Robert Sullivan
Mammalian semen contains a heterogeneous population of sperm cells. This heterogeneity results from variability in the complex processes of cell differentiation in the testis, biochemical modifications undergone by spermatozoa during transit along the male reproductive tract, interactions with secretions from accessory sex glands at ejaculation, and, in the context of reproductive technologies, in the ability of ejaculated spermatozoa to resist damage associated with freeze-thaw procedures. When submitted to density gradient centrifugation, ejaculated spermatozoa distribute themselves into two distinct populations: a low-density population characterized by low motility parameters, and a high-density population with high motility characteristics...
November 17, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/29147953/impact-of-perfluorochemicals-on-human-health-and-reproduction-a-male-s-perspective
#7
REVIEW
C Foresta, S Tescari, A Di Nisio
Perfluoroalkyl compounds (PFCs) are a class of organic molecules used in industry and consumer products. PFCs are non-biodegradable and bioaccumulate in the environment and for these reasons they have been a major subject of research regarding their toxicity, environmental fate, and sources of human exposure, since they have been shown to induce severe health consequences, such as neonatal mortality, neurotoxicity and immunotoxicity. The aim of this review is to explore the existing knowledge of the interplay between PFCs exposure and human health, with a focus on male reproductive health, given the emerging gender differences in PFCs clearance and their interaction with sex hormones receptors...
November 17, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29147461/the-role-of-antioxidant-enzymes-in-the-ovaries
#8
REVIEW
Shan Wang, Guolin He, Meng Chen, Tao Zuo, Wenming Xu, Xinghui Liu
Proper physiological function of the ovaries is very important for the entire female reproductive system and overall health. Reactive oxygen species (ROS) are generated as by-products during ovarian physiological metabolism, and antioxidants are indicated as factors that can maintain the balance between ROS production and clearance. A disturbance in this balance can induce pathological consequences in oocyte maturation, ovulation, fertilization, implantation, and embryo development, which can ultimately influence pregnancy outcomes...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29146625/cyanotic-congenital-heart-disease-following-fertility-treatments-in-the-united-states-from-2011-to-2014
#9
Alireza A Shamshirsaz, Zhoobin H Bateni, Haleh Sangi-Haghpeykar, Sara E Arian, Hadi Erfani, Amir A Shamshirsaz, Alfred Abuhamad, Karin A Fox, Susan M Ramin, Amirhossein Moaddab, Shiraz A Maskatia, Bahram Salmanian, Keila N Lopez, Pardis Hosseinzadeh, Amy K Schutt, Ahmed A Nassr, Jimmy Espinoza, Gary A Dildy, Michael A Belfort, Steven L Clark
OBJECTIVE: To examine the risk for cyanotic congenital heart diseases (CCHDs) among live births in the USA, resulting from various forms of infertility treatments. METHODS: This study is a cross-sectional analysis of live births in the USA from 2011 to 2014. Infertility treatments are categorised into two of the following groups on birth certificates: assisted reproductive technology (ART) fertility treatment (surgical egg removal; eg, in vitro fertilisation and gamete intrafallopian transfer) and non-ART fertility treatment (eg, medical treatment and intrauterine insemination)...
November 16, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29146098/characterization-of-polymorphism-in-the-fsh-receptor-gene-and-its-impact-on-some-reproductive-indices-in-dairy-cows
#10
Hassan Sharifiyazdi, Abdolah Mirzaei, Zahra Ghanaatian
Follicle stimulating hormone (FSH) is released from the anterior pituitary gland and has an important role in female fertility. As FSH is a glycoprotein polypeptide hormone which cannot pass through the cell membrane, its influence on target cells must be mediated by the FSH receptor (FSHR). Accordingly, any kind of mutation in FSHR can affect reproduction in dairy cows. In this study, the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique was used for recognition of a point mutation (A/G: position -278) located in the FSHR gene in Iranian dairy cows...
November 6, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/29145852/a-preliminary-evaluation-of-influence-of-body-mass-index-on-in-vitro-fertilization-outcome-in-non-obese-endometriosis-patients
#11
Eliana Garalejic, Biljana Arsic, Jovana Radakovic, Dragana Bojovic Jovic, Dragana Lekic, Biljana Macanovic, Ivan Soldatovic, Milan Perovic
BACKGROUND/AIMS: Obese and overweight women experience a lower probability for pregnancy after IVF. However, despite the increasing prevalence of obesity, the large majority of infertile women are non-obese. One of the most common indications for IVF is endometriosis. Thought-provoking inverse correlation has been established between BMI and endometriosis. Lower BMI is a risk factor for development of endometriosis and a predictive factor for severe endometriosis. Since severe endometriosis carries lower reproductive chances, even after IVF, we preliminary tested a hypothesis that higher BMI among non-obese endometriosis patients improves IVF outcomes...
November 16, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/29145645/waddlia-chondrophila-a-chlamydia-related-bacterium-has-a-negative-impact-on-human-spermatozoa
#12
D Baud, N Vulliemoz, A Ammerdorffer, J Gyger, G Greub, V Castella, M Stojanov
STUDY QUESTION: What is the impact of Waddlia chondrophila, an emerging Chlamydia-related bacterium associated with miscarriage, on human spermatozoa? SUMMARY ANSWER: W. chondrophila had a negative impact on human spermatozoa (decrease in viability and mitochondrial membrane potential) and was not entirely removed from infected samples by density gradient centrifugation. WHAT IS KNOWN ALREADY: Bacterial infection or colonization might have a deleterious effect on male fertility...
November 14, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29145594/wellbeing-of-gay-fathers-with-children-born-through-surrogacy-a-comparison-with-lesbian-mother-families-and-heterosexual-ivf-parent-families
#13
L Van Rijn-van Gelderen, H W M Bos, T D Jorgensen, K Ellis-Davies, A Winstanley, S Golombok, B Rubio, M Gross, O Vecho, M E Lamb
STUDY QUESTION: Are there differences in levels of parental wellbeing (parental stress, psychological adjustment and partner relationship satisfaction) between gay-father families with infants born through surrogacy, lesbian-mother families with infants born through donor insemination, and heterosexual-parent families with infants born through IVF? SUMMARY ANSWER: There were no differences in parental wellbeing. WHAT IS KNOWN ALREADY: The only other study of parental wellbeing in gay-father families formed through surrogacy (mean age children: 4 years old) found no difference in couple relationship satisfaction between these families and lesbian-mother families formed through donor insemination and heterosexual-parent families formed without assisted reproductive technologies...
November 14, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29144576/molecular-reproduction-development-volume-84-issue-11-november-2017
#14
(no author information available yet)
Ctenophores, also known as comb jellies, are non-bilaterian invertebrates and nearly all are self-fertile hermaphrodites. Mnemiopsis leidyi is a particularly useful model for the study of cellular, tissue, and organ patterning in ctenophores due to their extreme transparency, as seen in these adults. The locomotory ctene rows, highlighted by iridescence, overlie the germ line, from which gametes and embryos are readily available in large numbers. In this issue, Davidson et al. characterize transcript expression and timing of the maternal-to-zygotic transition and accompanying zygotic genome activation during early embryogenesis in this ctenophore...
November 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/29143943/the-impact-of-ejaculatory-abstinence-on-semen-analysis-parameters-a-systematic-review
#15
REVIEW
Brent M Hanson, Kenneth I Aston, Tim G Jenkins, Douglas T Carrell, James M Hotaling
OBJECTIVE: The aim of this study was to evaluate recent publications and determine the impact of ejaculatory abstinence on semen analysis parameters as well as fertility outcomes. METHODS: This was a systematic review of 28 recent publications. The focus of this study was the impact of abstinence on semen parameters and fertility outcomes in papers published since the year 2000. The specific parameters evaluated were volume, sperm count, motility, morphology, pH, DNA fragmentation rate, viability, and pregnancy or fertilization rates following assisted reproduction...
November 16, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29143644/the-effects-of-family-planning-and-other-factors-on-fertility-abortion-miscarriage-and-stillbirths-in-the-spectrum-model
#16
John Stover, William Winfrey
BACKGROUND: The Lives Saved Tool (LiST) estimates the effects of maternal and child health interventions on mortality rates and the number of deaths. The family planning module in Spectrum interacts with LiST by providing estimates of the effects of scaling up family planning use on the number of live births, miscarriages, abortions, and stillbirths. METHODS: We use the proximate determinants of fertility framework to estimate the effects of changes in contraceptive use, proportion married, postpartum insusceptibility, abortion and sterility on the total fertility rate...
November 7, 2017: BMC Public Health
https://www.readbyqxmd.com/read/29143631/first-birth-and-the-trajectory-of-women-s-empowerment-in-egypt
#17
Goleen Samari
BACKGROUND: Women's empowerment is often used to explain changes in reproductive behavior, but no consideration is given to how reproductive events can shape women's empowerment over time. Fertility may cause changes in women's empowerment, or they may be mutually influencing. Research on women's empowerment and fertility relies on cross-sectional data from South Asia, which limits the understanding of the direction of association between women's empowerment and fertility in other global contexts...
November 8, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29141997/crispr-cas9-mediated-genome-editing-reveals-the-synergistic-effects-of-%C3%AE-defensin-family-members-on-sperm-maturation-in-rat-epididymis
#18
Chaobao Zhang, Yuchuan Zhou, Shengsong Xie, Qianqian Yin, Chunhua Tang, Zimei Ni, Jian Fei, Yonglian Zhang
The epididymis is a male reproductive organ involved in posttesticular sperm maturation and storage, but the mechanism underlying sperm maturation remains unclear. β-Defensins (Defbs) belong to a family of small, cysteine-rich, cationic peptides that are antimicrobial and modulate the immune response. A large number of Defb genes are expressed abundantly in the male reproductive tract, especially in the epididymis. We and other groups have shown the involvement of several Defb genes in regulation of sperm function...
November 15, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29141031/developmental-patterning-of-sub-epidermal-cells-in-the-outer-integument-of-arabidopsis-seeds
#19
Elisa Fiume, Olivier Coen, Wenjia Xu, Loïc Lepiniec, Enrico Magnani
The seed, the reproductive unit of angiosperms, is generally protected by the seed coat. The seed coat is made of one or two integuments, each comprising two epidermal cells layers and, in some cases, extra sub-epidermal cell layers. The thickness of the seed-coat affects several aspects of seed biology such as dormancy, germination and mortality. In Arabidopsis, the inner integument displays one or two sub-epidermal cell layers that originate from periclinal cell divisions of the innermost epidermal cell layer...
2017: PloS One
https://www.readbyqxmd.com/read/29140722/reproductive-impacts-of-endocrine-disrupting-chemicals-on-wildlife-species-implications-for-conservation-of-endangered-species
#20
Christopher W Tubbs, Caitlin E McDonough
Wildlife have proven valuable to our understanding of the potential effects of endocrine-disrupting chemicals (EDCs) on human health by contributing considerably to our understanding of the mechanisms and consequences of EDC exposure. But the threats EDCs present to populations of wildlife species themselves are significant, particularly for endangered species whose existence is vulnerable to any reproductive perturbation. However, few studies address the threats EDCs pose to endangered species owing to challenges associated with their study...
November 15, 2017: Annual Review of Animal Biosciences
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