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research in infertility

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https://www.readbyqxmd.com/read/28543743/detection-and-localization-of-regucalcin-in-spermatozoa-of-water-buffalo-bubalus-bubalis-a-calcium-regulating-multifunctional-protein
#1
H Pillai, A M Shende, M S Parmar, J Thomas, H S Kartha, G Taru Sharma, S K Ghosh, S K Bhure
Regucalcin (RGN) is a calcium-regulating, anti-apoptotic, antioxidative and antiproliferative multifunctional protein predominantly seen in liver and kidney. All these functions are very crucial during spermatogenesis and sperm maturation process until fertilization of the ovum. Although many studies have reported the wide distribution of regucalcin in the male reproductive tract of the rat, human and bovine, its presence in spermatozoa is yet to be demonstrated wherein calcium has a pivotal role in the transport, capacitation, acrosomal reaction and further fusion with ova...
May 24, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28541378/what-does-a-single-semen-sample-tell-you-implications-for-male-factor-infertility-research
#2
Yu-Han Chiu, Regina Edifor, Bernard A Rosner, Feiby L Nassan, Audrey J Gaskins, Lidia Minguez-Alarcon, Paige L Williams, Cigdem Tanrikut, Russ Hauser, Jorge E Chavarro
Semen parameters are variable within-man but it is unclear whether one sample could represent a man's long-term average in epidemiologic studies. Between 2005 and 2014, 329 men from a fertility clinic provided 768 semen samples in the EARTH study in Boston, Massachusetts.Total sperm count, concentration, morphology, motility, and ejaculate volume were assessed. We used linear mixed models to compare men's first samples to their long-term averages, and calculate intraclass correlation coefficients for each parameter...
May 24, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28537489/hydrogen-sulfide-as-a-potential-target-in-preventing-spermatogenic-failure-and-testicular-dysfunction
#3
Jing Wang, Wan Wang, Shuangyue Li, Yi Han, Ping Zhang, Guoliang Meng, Yujiao Xiao, Liping Xie, Xin Wang, Jiahao Sha, Qi Chen, Philip K Moore, Rui Wang, Wenpei Xiang, Yong Ji
AIMS: Testis and sperm are particularly susceptible to inflammation and oxidative stress. Although Hydrogen sulfide (H2S) has been considered as an important biological signaling molecule in inflammatory and oxidative stress processes, its role in male reproductive system was poorly understood. The aim of this study was to investigate the role of H2S in the regulation of male reproductive system. RESULTS: We found that both sub-fertile and infertile patients, especially asthenospermic patients, exhibited a decreased concentration of H2S in their seminal plasma and diminished expression of H2S-generating enzyme (cystathionine β-synthase, CBS) in sperm...
May 24, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28535841/the-epigenetic-effects-of-assisted-reproductive-technologies-ethical-considerations
#4
M-C Roy, C Dupras, V Ravitsky
The use of assisted reproductive technologies (ART) has increased significantly, allowing many coping with infertility to conceive. However, an emerging body of evidence suggests that ART could carry epigenetic risks for those conceived through the use of these technologies. In accordance with the Developmental Origins of Health and Disease hypothesis, ART could increase the risk of developing late-onset diseases through epigenetic mechanisms, as superovulation, fertilization methods and embryo culture could impair the embryo's epigenetic reprogramming...
May 24, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28532600/population-attributable-fraction-of-tubal-factor-infertility-associated-with-chlamydia
#5
Rachel J Gorwitz, Harold C Wiesenfeld, Pai Lien Chen, Karen R Hammond, Karen A Sereday, Catherine L Haggerty, Robert E Johnson, John R Papp, Dmitry M Kissin, Tara C Henning, Edward W Hook, Michael P Steinkampf, Lauri E Markowitz, William M Geisler
BACKGROUND: Chlamydia trachomatis infection is highly prevalent among young women in the United States. Prevention of long-term sequelae of infection, including tubal factor infertility, is a primary goal of chlamydia screening and treatment activities. However, the population attributable fraction of tubal factor infertility associated with chlamydia is unclear, and optimal measures for assessing tubal factor infertility and prior chlamydia in epidemiologic studies have not been established...
May 19, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28522293/direct-action-of-adiponectin-ameliorates-increased-androgen-synthesis-and-reduces-insulin-receptor-expression-in-the-polycystic-ovary
#6
Anusha Singh, Puran Bora, Amitabh Krishna
Polycystic ovary syndrome (PCOS) is a common endocrine and metabolic disorder of reproductive age females, leading to infertility. Despite extensive research, the exact pathophysiology and treatment are lacking. The aim of the current study was to evaluate the direct role of adiponectin either alone or together with luteinizing hormone (LH) on sex hormone synthesis and changes in insulin receptor (IR) in the ovary of dehydroepiandrosterone (DHEA)-treated PCOS-mice. Immunohistochemical study showed decreased expression of adiponectin receptor (AdipoR1) in PCOS-ovary which correlated with increased synthesis of androgen and decreased expression of IR...
May 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28521649/-am-i-really-gonna-go-sixty-years-without-getting-cancer-again-uncertainty-and-liminality-in-young-women-s-accounts-of-living-with-a-history-of-breast-cancer
#7
Sophie Rees
Although much research has examined the experience of breast cancer, the distinctive perspectives and lives of young women have been relatively neglected. Women diagnosed with breast cancer under the age of 45, and who had completed their initial treatment, were interviewed, and social constructionist grounded theory methods were used to analyse the data. The end of initial treatment was accompanied by a sense of unease and uncertainty in relation to recurrence and survival, and also fertility and menopausal status...
May 2017: Health (London)
https://www.readbyqxmd.com/read/28521061/extracellular-camp-activates-molecular-signalling-pathways-associated-with-sperm-capacitation-in-bovines
#8
Carlos Agustín I Alonso, Claudia E Osycka-Salut, Luciana Castellano, Andreína Cesari, Nicolás Di Siervi, Adrián Mutto, Anders Johannisson, Jane M Morrell, Carlos Davio, Silvina Perez-Martinez
STUDY QUESTION: Is extracellular cAMP involved in the regulation of signalling pathways in bovine sperm capacitation? SUMMARY ANSWER: Extracellular cAMP-induced sperm capacitation through the activation of different signalling pathways that involve phospholipase C (PLC), PKC/ERK1-2 signalling and an increase in sperm Ca2+ levels, as well as soluble AC and cAMP/protein kinase A (PKA) signalling. WHAT IS KNOWN ALREADY: In order to fertilize the oocyte, ejaculated spermatozoa must undergo a series of changes in the female reproductive tract, known as capacitation...
May 18, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28500824/vitamin-d-and-aspects-of-female-fertility
#9
REVIEW
Nick Voulgaris, Labrini Papanastasiou, George Piaditis, Anna Angelousi, Gregory Kaltsas, George Mastorakos, Eva Kassi
The role of vitamin D in female reproduction has been intensively examined over the last few decades. A large body of evidence suggests that vitamin D might have beneficial effects on metabolic/hormonal parameters of PCOS and endometriosis, while it appears to be associated with IVF outcomes. However, due to the heterogeneity among observational and interventional studies, no cause-effect relationship has yet been established. The aim of this review is to analyze recent in vitro animal and human studies which examined the association of vitamin D with disease entities affecting female fertility potential...
January 2017: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28499456/role-of-micrornas-in-premature-ovarian-insufficiency
#10
REVIEW
Ying Guo, Junyan Sun, Dongmei Lai
Premature ovarian insufficiency (POI) is a typical disorder of amenorrhea lasting for a minimum of 4 months. The typical characteristics comprised of declined estrogen and raised serum concentrations of follicle-stimulating hormone (FSH) in women <40-year-old, primarily originating from iatrogenic factors, karyotypic abnormalities, and genetic factors. However, the etiology of POI remains unknown in approximately 90% of cases. POI could lead to infertility, osteoporosis, cardiovascular disorder, and cognitive dysfunction...
May 12, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28498625/biomechanics-of-the-human-uterus
#11
REVIEW
Kristin M Myers, David Elad
The appropriate biomechanical function of the uterus is required for the execution of human reproduction. These functions range from aiding the transport of the embryo to the implantation site, to remodeling its tissue walls to host the placenta, to protecting the fetus during gestation, to contracting forcefully for a safe parturition and postpartum, to remodeling back to its nonpregnant condition to renew the cycle of menstruation. To serve these remarkably diverse functions, the uterus is optimally geared with evolving and contractile muscle and tissue layers that are cued by chemical, hormonal, electrical, and mechanical signals...
May 12, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/28498013/disparities-in-counseling-female-cancer-patients-for-fertility-preservation
#12
Angela K Lawson, Jamie M McGuire, Edernst Noncent, John F Olivier, Kristin N Smith, Erica E Marsh
BACKGROUND: Female cancer patients who are exposed to gonadotoxic chemotherapy are at risk of future infertility. Research suggests that disparities in fertility preservation counseling (FPC) may exist. Previous research is limited by recall bias; therefore, this study examined objective electronic medical chart data regarding FPC at an academic medical center. MATERIALS AND METHODS: This study included reproductive-aged women (18-45 years old) with a diagnosis of breast, gynecological, or hematological cancer and who were exposed to a gonadotoxic chemotherapeutic agent from 2009 to 2013...
May 12, 2017: Journal of Women's Health
https://www.readbyqxmd.com/read/28497013/racial-ethnic-disparities-in-environmental-endocrine-disrupting-chemicals-and-women-s-reproductive-health-outcomes-epidemiological-examples-across-the-life-course
#13
Tamarra M James-Todd, Yu-Han Chiu, Ami R Zota
Disparities in women's reproductive health outcomes across the life course have been well-documented. Endocrine disrupting chemicals may be one factor driving disparities, as studies suggest exposure to certain environmental endocrine disrupting chemicals, such as certain phthalates, bisphenol A, parabens and polybrominated diphenyl ethers are higher in non-whites. Yet, a limited amount of research has focused on these chemical exposures as a potential mediator of racial/ethnic differences in women's reproductive health outcomes, such as pubertal development, fibroids, infertility, and pregnancy complications...
June 2016: Current Epidemiology Reports
https://www.readbyqxmd.com/read/28486704/cost-effectiveness-analysis-of-lifestyle-intervention-in-obese-infertile-women
#14
A M van Oers, M A Q Mutsaerts, J M Burggraaff, W K H Kuchenbecker, D A M Perquin, C A M Koks, R van Golde, E M Kaaijk, J M Schierbeek, N F Klijn, Y M van Kasteren, J A Land, B W J Mol, A Hoek, H Groen
STUDY QUESTION: What is the cost-effectiveness of lifestyle intervention preceding infertility treatment in obese infertile women? SUMMARY ANSWER: Lifestyle intervention preceding infertility treatment as compared to prompt infertility treatment in obese infertile women is not a cost-effective strategy in terms of healthy live birth rate within 24 months after randomization, but is more likely to be cost-effective using a longer follow-up period and live birth rate as endpoint...
May 9, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28480429/ethnobotanical-survey-of-phoenix-dactylifera-l-pollen-used-for-the-treatment-of-infertility-problems-in-algerian-oases
#15
Cherifa Selmani, Djamila Chabane, Nadia Bouguedoura
BACKGROUND: The Phoenix dactylifera L. (date palm) is known for its traditional medicinal properties across the history of native population in Algerian Sahara. There is a large trend of consumption of date palm pollen preparations in many human infertility cases in our country. However, the validity has not been scientifically tested. There has been no direct scientific research on this application. This study was undertaken to identify cultivars with greater potential in the traditional medicine uses...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28473127/long-term-breast-cancer-risk-following-ovarian-stimulation-in-young-egg-donors-a-call-for-follow-up-research-and-informed-consent
#16
Jennifer Schneider, Jennifer Lahl, Wendy Kramer
In the USA and other countries, oocyte donation is gaining increasing importance. Although sufficient data exist on procedure-associated short-term risks for oocyte donors, such as ovarian hyperstimulation syndrome, long-term follow-up studies of egg donors are lacking and their health risks are unknown. The lack of information may be misleadingly interpreted as lack of risk. Long-term hormone replacement therapy is recognized as a risk factor for breast cancer; the breast cancer risk of ovarian stimulation for egg donors is unknown but is a possibility...
May 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28472417/the-impact-of-specific-fertility-treatments-on-cognitive-development-in-childhood-and-adolescence-a-systematic-review
#17
Alice R Rumbold, Vivienne M Moore, Melissa J Whitrow, Tassia K Oswald, Lisa J Moran, Renae C Fernandez, Kurt T Barnhart, Michael J Davies
STUDY QUESTION: Does fertility treatment influence cognitive ability in school aged children, and does the impact vary with the type of treatment? SUMMARY ANSWER: The available high-quality evidence indicates that specific treatments may give rise to different effects on cognitive development, with certain treatments, including ICSI, associated with cognitive impairment. WHAT IS KNOWN ALREADY: Previous reviews of the literature concerning cognitive outcomes among children conceived with medical assistance have concluded that study findings are generally 'reassuring', but limited attention has been paid to the quality of this research...
May 4, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28462397/an-overview-on-ethical-considerations-in-stem-cell-research-in-iran-and-ethical-recommendations-a-review
#18
REVIEW
Tahmineh Farajkhoda
Conducting research on the stem cell lines might bring some worthy good to public. Human Stem Cells (hSCs) research has provided opportunities for scientific progresses and new therapies, but some complex ethical matters should be noticed to ensure that stem cell research is carried out in an ethically appropriate manner. The aim of this review article is to discuss the importance of stem cell research, code of ethics for stem cell research in Iran and ethical recommendation. Generation of stem cells for research from human embryo or adult stem cells, saving, maintenance and using of them are the main ethical, legal and jurisprudence concerns in Iran...
February 2017: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/28456148/impact-of-emotional-disorders-on-semen-quality-in-men-treated-for-infertility
#19
Artur Wdowiak, Agnieszka Bień, Grażyna Iwanowicz-Palus, Marta Makara-Studzińska, Iwona Bojar
OBJECTIVE: Semen quality depends on factors such as lifestyle, environment, and hormone secretion. OBJECTIVE: The purpose of the study was to assess the correlation between emotional disorders and the secretion of selected hormones, and to assess the impact of these disorders on semen quality. METHODS: The study covered 60 fertile and 112 subfertile males. The sperm was obtained by masturbation, and examined directly after liquidation according to the 2010 criteria of the World Health Organization...
February 15, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28450403/pathways-to-genetic-parenthood-for-same-sex-couples
#20
Timothy F Murphy
Researchers are pursuing various ways to synthesise human male and female gametes, which would be useful for people facing infertility. Some people are unable to conceive children with their partner because one of them is infertile in the sense of having an anatomical or physiological deficit. Other people-in same sex couples-may not be individually infertile but situationally infertile in relation to one another. Segers et al have described a pathway towards synthetic gametes that would rely on embryonic stem cells, rather than somatic cells...
April 27, 2017: Journal of Medical Ethics
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