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Human Reproduction Update

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https://www.readbyqxmd.com/read/28333357/dietary-patterns-foods-and-nutrients-in-male-fertility-parameters-and-fecundability-a-systematic-review-of-observational-studies
#1
Albert Salas-Huetos, Mònica Bulló, Jordi Salas-Salvadó
BACKGROUND: Infertility is a global public health issue, affecting 15% of all couples of reproductive age. Male factors, including decreased semen quality, are responsible for ~25% of these cases. The dietary pattern, the components of the diet and nutrients have been studied as possible determinants of sperm function and/or fertility. OBJECTIVE AND RATIONALE: Previous systematic reviews have been made of the few heterogeneous low-quality randomized clinical trials (RCTs) conducted in small samples of participants and investigating the effect of specific nutrients and nutritional supplements on male infertility...
March 10, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28333354/men-s-knowledge-attitudes-and-behaviours-relating-to-fertility
#2
Karin Hammarberg, Veronica Collins, Carol Holden, Kate Young, Robert McLachlan
BACKGROUND: The increasingly common practice in high-income countries to delay childbearing to the fourth and fifth decades of life increases the risk of involuntary childlessness or having fewer children than desired. Older age also increases the risk of age-related infertility, the need for ART to conceive, and obstetric and neonatal complications. Existing research relating to childbearing focusses almost exclusively on women, and in public discourse declining fertility rates are often assumed to be the result of women delaying childbearing to pursue other life goals such as a career and travel...
March 10, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28333235/ovarian-hormones-and-obesity
#3
Brigitte Leeners, Nori Geary, Philippe N Tobler, Lori Asarian
BACKGROUND: Obesity is caused by an imbalance between energy intake, i.e. eating and energy expenditure (EE). Severe obesity is more prevalent in women than men worldwide, and obesity pathophysiology and the resultant obesity-related disease risks differ in women and men. The underlying mechanisms are largely unknown. Pre-clinical and clinical research indicate that ovarian hormones may play a major role. OBJECTIVE AND RATIONALE: We systematically reviewed the clinical and pre-clinical literature on the effects of ovarian hormones on the physiology of adipose tissue (AT) and the regulation of AT mass by energy intake and EE...
March 2, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28333221/surgical-treatment-of-adhesion-related-chronic-abdominal-and-pelvic-pain-after-gynaecological-and-general-surgery-a-systematic-review-and-meta-analysis
#4
Barend A van den Beukel, Roy de Ree, Suzanne van Leuven, Erica A Bakkum, Chema Strik, Harry van Goor, Richard P G Ten Broek
BACKGROUND: Chronic pain is a frequent post-operative complication, affecting ~20-40% of patients who have undergone surgery of the female genital or alimentary tract. Chronic pain is an important risk factor for diminished quality of life after surgery. Adhesions are frequently associated with chronic post-operative pain; however, surgical treatment of adhesion-related pain is controversial. OBJECTIVE AND RATIONALE: The aim of this study was to investigate the efficacy and harms of surgical interventions for chronic post-operative pain attributable to adhesions...
March 2, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28333337/tubal-anastomosis-after-previous-sterilization-a-systematic-review
#5
Jacoba A H van Seeters, Su Jen Chua, Ben W J Mol, Carolien A M Koks
BACKGROUND: Female sterilization is one of the most common contraceptive methods. A small number of women, however, opt for reversal of sterilization procedures after they experience regret. Procedures can be performed by laparotomy or laparoscopy, with or without robotic assistance. Another commonly utilized alternative is IVF. The choice between surgery and IVF is often influenced by reimbursement politics for that particular geographic location. OBJECTIVE AND RATIONALE: We evaluated the fertility outcomes of different surgical methods available for the reversal of female sterilization, compared these to IVF and assessed the prognostic factors for success...
February 22, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28180264/preimplantation-and-prenatal-diagnosis-wrongful-birth-and-wrongful-life-a-global-view-of-bioethical-and-legal-controversies
#6
Paola Frati, Vittorio Fineschi, Mariantonia Di Sanzo, Raffaele La Russa, Matteo Scopetti, Filiberto M Severi, Emanuela Turillazzi
No abstract text is available yet for this article.
February 9, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28164236/long-term-adjustment-to-unmet-parenthood-goals-following-art-a-systematic-review-and-meta-analysis
#7
Sofia Gameiro, Amy Finnigan
No abstract text is available yet for this article.
February 6, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28115407/biological-basis-for-human-capacitation-revisited
#8
REVIEW
Christopher De Jonge
BACKGROUND: A little more than a decade ago a review entitled 'Biological basis for human capacitation' was published. A primary conclusion of the review was that with all the technological advances that have been made since the first experiments demonstrated the in vivo requirement of capacitation for fertilization, very little progress had since been made, most significantly for human. OBJECTIVE AND RATIONALE: The present review was carried out to provide an update on the biological basis for human capacitation...
January 23, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28062551/new-stimulation-regimens-endogenous-and-exogenous-progesterone-use-to-block-the-lh-surge-during-ovarian-stimulation-for-ivf
#9
REVIEW
Nathalie Massin
BACKGROUND: The advent of embryo and oocyte vitrification today gives reproductive specialists an opportunity to consider new strategies for improving the practice and results of IVF attempts. As the freezing of entire cohorts does not compromise, and may even improve, the results of IVF attempts, it is possible to break away from the standard sequence of stimulation-retrieval-transfer. The constraints associated with ovarian stimulation in relation to the potential harmful effects of the hormonal environment on endometrial receptivity can be avoided...
January 5, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28062550/what-is-the-optimal-means-of-preparing-the-endometrium-in-frozen-thawed-embryo-transfer-cycles-a-systematic-review-and-meta-analysis
#10
Eva R Groenewoud, Astrid E P Cantineau, Boudewijn J Kollen, Nick S Macklon, Ben J Cohlen
No abstract text is available yet for this article.
January 5, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28007752/assessment-of-the-uterus-with-three-dimensional-ultrasound-in-women-undergoing-art
#11
REVIEW
Sotirios H Saravelos, Kannamannadiar Jayaprakasan, Kamal Ojha, Tin-Chiu Li
BACKGROUND: A detailed assessment of the uterus forms a pivotal part of the ART treatment process. The emergence of three-dimensional ultrasound (3D US) has provided clinicians with a highly powerful tool in this respect. Assessments with 3D US range from the reconstruction of anatomical planes elusive to conventional US, to the objective measurement of anatomical volumes and vascularization parameters. However, despite the ever increasing number of publications emerging in the literature, the question of which aspects of 3D US are of most clinical value remains a topic of debate...
December 21, 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27979878/implications-of-telomeres-and-telomerase-in-endometrial-pathology
#12
REVIEW
D K Hapangama, A Kamal, G Saretzki
BACKGROUND: Eukaryotic chromosomal ends are linear and are protected by nucleoprotein complexes known as telomeres. The complex structural anatomy and the diverse functions of telomeres as well as the unique reverse transcriptase enzyme, telomerase that maintains telomeres are under intensive scientific scrutiny. Both are involved in many human diseases including cancer, but also in ageing and chronic disease such as diabetes. Their intricate involvement in many cellular processes and pathways is being dynamically deciphered in many organs including the endometrium...
December 15, 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27920066/new-concepts-for-an-old-problem-the-diagnosis-of-endometrial-hyperplasia
#13
REVIEW
Peter A Sanderson, Hilary O D Critchley, Alistair R W Williams, Mark J Arends, Philippa T K Saunders
BACKGROUND: Endometrial hyperplasia (EH) is a uterine pathology representing a spectrum of morphological endometrial alterations. It is predominantly characterized by an increase in the endometrial gland-to-stroma ratio when compared to normal proliferative endometrium. The clinical significance of EH lies in the associated risk of progression to endometrioid endometrial cancer (EC) and 'atypical' forms of EH are regarded as premalignant lesions. Traditional histopathological classification systems for EH exhibit wide and varying degrees of diagnostic reproducibility and, as a consequence, standardized patient management can be challenging...
December 4, 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27797914/oocyte-somatic-cell-interactions-in-the-human-ovary-novel-role-of-bone-morphogenetic-proteins-and-growth-differentiation-factors
#14
REVIEW
Hsun-Ming Chang, Jie Qiao, Peter C K Leung
BACKGROUND: Initially identified for their capability to induce heterotopic bone formation, bone morphogenetic proteins (BMPs) are multifunctional growth factors that belong to the transforming growth factor β superfamily. Using cellular and molecular genetic approaches, recent studies have implicated intra-ovarian BMPs as potent regulators of ovarian follicular function. The bi-directional communication of oocytes and the surrounding somatic cells is mandatory for normal follicle development and oocyte maturation...
December 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27655590/long-non-coding-rnas-in-human-early-embryonic-development-and-their-potential-in-art
#15
REVIEW
Julien Bouckenheimer, Said Assou, Sébastien Riquier, Cyrielle Hou, Nicolas Philippe, Caroline Sansac, Thierry Lavabre-Bertrand, Thérèse Commes, Jean-Marc Lemaître, Anthony Boureux, John De Vos
BACKGROUND: Human long non-coding RNAs (lncRNAs) are an emerging category of transcripts with increasingly documented functional roles during development. LncRNAs and roles during human early embryo development have recently begun to be unravelled. OBJECTIVE AND RATIONALE: This review summarizes the most recent knowledge on lncRNAs and focuses on their expression patterns and role during early human embryo development and in pluripotent stem cells (PSCs). Public mRNA sequencing (mRNA-seq) data were used to illustrate these expression signatures...
December 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27655589/reproductive-factors-menopausal-hormone-therapies-and-primary-liver-cancer-risk-a-systematic-review-and-dose-response-meta-analysis-of-observational-studies
#16
REVIEW
Guo-Chao Zhong, Yan Liu, Nan Chen, Fa-Bao Hao, Kang Wang, Jia-Hao Cheng, Jian-Ping Gong, Xiong Ding
BACKGROUND: A striking gender disparity in the incidence and outcome of primary liver cancer (PLC) has been well recognized. Mounting evidence from basic research suggests that hormonal factors may be involved in the gender disparity of PLC. Whether hormonal exposures in human subjects are associated with PLC risk is largely unknown. OBJECTIVE AND RATIONALE: Whether reproductive factors and use of menopausal hormone therapies (MHTs) in women are associated with PLC risk remains controversial...
December 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27655588/the-epidemiologic-evidence-linking-prenatal-and-postnatal-exposure-to-endocrine-disrupting-chemicals-with-male-reproductive-disorders-a-systematic-review-and-meta-analysis
#17
REVIEW
Jens Peter Bonde, Esben Meulengracht Flachs, Susie Rimborg, Clara Helene Glazer, Aleksander Giwercman, Cecilia Høst Ramlau-Hansen, Karin Sørig Hougaard, Birgit Bjerre Høyer, Katia Keglberg Hærvig, Sesilje Bondo Petersen, Lars Rylander, Ina Olmer Specht, Gunnar Toft, Elvira Vaclavik Bräuner
BACKGROUND: More than 20 years ago, it was hypothesized that exposure to prenatal and early postnatal environmental xenobiotics with the potential to disrupt endogenous hormone signaling might be on the causal path to cryptorchidism, hypospadias, low sperm count and testicular cancer. Several consensus statements and narrative reviews in recent years have divided the scientific community and have elicited a call for systematic transparent reviews. We aimed to fill this gap in knowledge in the field of male reproductive disorders...
December 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27614362/endogenous-very-small-embryonic-like-stem-cells-critical-review-therapeutic-potential-and-a-look-ahead
#18
REVIEW
Deepa Bhartiya, Ambreen Shaikh, Sandhya Anand, Hiren Patel, Sona Kapoor, Kalpana Sriraman, Seema Parte, Sreepoorna Unni
BACKGROUND: Both pluripotent very small embryonic-like stem cells (VSELs) and induced pluripotent stem (iPS) cells were reported in 2006. In 2012, a Nobel Prize was awarded for iPS technology whereas even today the very existence of VSELs is not well accepted. The underlying reason is that VSELs exist in low numbers, remain dormant under homeostatic conditions, are very small in size and do not pellet down at 250-280g. The VSELs maintain life-long tissue homeostasis, serve as a backup pool for adult stem cells and are mobilized under stress conditions...
December 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27591247/stem-cell-insights-into-human-trophoblast-lineage-differentiation
#19
REVIEW
Teena Kjb Gamage, Lawrence W Chamley, Joanna L James
BACKGROUND: The human placenta is vital for fetal development, yet little is understood about how it forms successfully to ensure a healthy pregnancy or why this process is inadequate in 1 in 10 pregnancies, leading to miscarriage, intrauterine growth restriction or preeclampsia. Trophoblasts are placenta-specific epithelial cells that maximize nutrient exchange. All trophoblast lineages are thought to arise from a population of trophoblast stem cells (TSCs). However, whilst the isolation of murine TSC has led to an explosion in understanding murine placentation, the isolation of an analogous human TSC has proved more difficult...
December 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27864302/interpregnancy-interval-following-miscarriage-and-adverse-pregnancy-outcomes-systematic-review-and-meta-analysis
#20
REVIEW
Chrishny Kangatharan, Saffi Labram, Sohinee Bhattacharya
BACKGROUND: A short interpregnancy interval (IPI) following a delivery is believed to be associated with adverse outcomes in the next pregnancy. The optimum IPI following miscarriage is controversial. Based on a single large-scale study in Latin and South America, the World Health Organization recommends delaying pregnancy for 6 months after a miscarriage to achieve optimal outcomes in the next pregnancy. OBJECTIVE AND RATIONALE: Our aim was to determine if a short IPI (<6 months) following miscarriage is associated with adverse outcomes in the next pregnancy...
November 17, 2016: Human Reproduction Update
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