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Human Reproduction

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https://www.readbyqxmd.com/read/27864361/causes-of-male-infertility-a-9-year-prospective-monocentre-study-on-1737-patients-with-reduced-total-sperm-counts
#1
M Punab, O Poolamets, P Paju, V Vihljajev, K Pomm, R Ladva, P Korrovits, M Laan
STUDY QUESTION: What are the primary causes of severe male factor infertility? SUMMARY ANSWER: Although 40% of all patients showed primary causes of infertility, which could be subdivided into three groups based on the severity of their effect, ~75% of oligozoospermia cases remained idiopathic. WHAT IS KNOWN ALREADY: There are few large-scale epidemiological studies analyzing the causes of male factor infertility. STUDY DESIGN, SIZE, DURATION: A prospective clinical-epidemiological study was conducted at the Andrology Centre, Tartu University Hospital between 2005 and 2013, recruiting male partners of couples failing to conceive a child for over ≥12 months...
November 17, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27864360/evidence-based-medicine-in-art
#2
LETTER
Rita Vassena
No abstract text is available yet for this article.
November 17, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27864359/endothelin-1-down-regulates-matrix-metalloproteinase-14-and-15-expression-in-human-first-trimester-trophoblasts-via-endothelin-receptor-type-b
#3
Alejandro Majali-Martinez, Philipp Velicky, Jürgen Pollheimer, Martin Knöfler, Hong Wa Yung, Graham J Burton, Nassim Ghaffari Tabrizi-Wizsy, Uwe Lang, Ursula Hiden, Gernot Desoye, Martina Dieber-Rotheneder
STUDY QUESTION: Does endothelin-1 (ET-1) regulate matrix metalloproteinase (MMP) 14 and 15 production and invasion of human first trimester trophoblasts? SUMMARY ANSWER: ET-1 in pathophysiological concentrations down-regulates MMP14 and MMP15 expression via endothelin receptor (ETR) type B and decreases trophoblast migration and invasion. WHAT IS KNOWN ALREADY: MMP14 and MMP15 are involved in trophoblast invasion. Impairment of invasion has been linked to pregnancy complications such as pre-eclampsia (PE)...
November 17, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27864358/effects-of-the-histone-deacetylase-inhibitor-scriptaid-on-the-developmental-competence-of-mouse-embryos-generated-through-round-spermatid-injection
#4
Pengcheng Kong, Mingru Yin, Dongbao Chen, Shangang Li, Yao Li, Fengying Xing, Manxi Jiang, Zhenfu Fang, Qifeng Lyu, Xuejin Chen
STUDY QUESTION: Can the histone deacetylase inhibitor Scriptaid improve the efficiency of the development of round spermatid injection (ROSI)-fertilized embryos in a mouse model? SUMMARY ANSWER: Treatment of ROSI mouse zygotes with Scriptaid increased the expression levels of several development-related genes at the blastocyst stage, resulting in more efficient in vitro development of the blastocyst and an increased birth rate of ROSI-derived embryos. WHAT IS KNOWN ALREADY: The full-term development of embryos derived through ROSI is significantly lower than that following ICSI in humans and other species...
November 17, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27852690/maternal-use-of-mild-analgesics-during-pregnancy-associated-with-reduced-anogenital-distance-in-sons-a-cohort-study-of-1027-mother-child-pairs
#5
Dorte Vesterholm Lind, Katharina M Main, Henriette Boye Kyhl, David Møbjerg Kristensen, Jorma Toppari, Helle Raun Andersen, Marianne Skovsager Andersen, Niels E Skakkebæk, Tina Kold Jensen
STUDY QUESTION: Is maternal use of mild analgesics in pregnancy associated with anogenital distance (AGD)-the distance from the anus to the genitals-in the offspring? SUMMARY ANSWER: Maternal use of mild analgesics [especially simultaneous use of paracetamol and nonsteroidal anti-inflammatory drugs (NSAIDs)] during pregnancy was associated with a shorter AGD in boys whereas no effect was found in girls. WHAT IS KNOWN ALREADY: Mild analgesics including paracetamol (acetaminophen) and NSAIDs (e...
November 16, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27852689/female-exposure-to-phthalates-and-time-to-pregnancy-a-first-pregnancy-planner-study
#6
Anne Marie L Thomsen, Anders H Riis, Jørn Olsen, Bo A G Jönsson, Christian H Lindh, Niels H Hjollund, Tina Kold Jensen, Jens Peter Bonde, Gunnar Toft
STUDY QUESTION: Is female exposure to phthalate metabolites associated with reduced fecundity, as estimated by prolonged time to pregnancy (TTP)? SUMMARY ANSWER: Female exposure to monoethyl phthalate (MEP) but not monobutyl phthalate (MBP), monobenzyl phthalate (MBzP) and monoethylhexyl phthalate (MEHP) was associated with a longer TTP. WHAT IS KNOWN ALREADY: Male exposure to phthalates is potentially associated with adverse effects on human fecundity in epidemiological studies, but little is known about the potential effects on female reproduction...
November 16, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27852688/the-role-of-intracytoplasmic-sperm-injection-in-non-male-factor-infertility-in-advanced-maternal-age
#7
Samer Tannus, Weon-Young Son, Ashley Gilman, Grace Younes, Tal Shavit, Michael-Haim Dahan
STUDY QUESTION: Does ICSI improve reproductive outcomes compared with conventional IVF when used for non-male factor infertility in women aged 40 years and over? SUMMARY ANSWER: There is no advantage of ICSI over conventional IVF in women aged 40 years and over when used for non-male factor infertility. WHAT IS KNOWN ALREADY: The use of ICSI has increased dramatically in recent years and is being applied for indications other than male factor infertility...
November 16, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27836979/a-mild-ovarian-stimulation-strategy-in-women-with-poor-ovarian-reserve-undergoing-ivf-a-multicenter-randomized-non-inferiority-trial
#8
M A Youssef, M van Wely, H Al-Inany, T Madani, N Jahangiri, S Khodabakhshi, M Alhalabi, M Akhondi, S Ansaripour, R Tokhmechy, L Zarandi, A Rizk, M El-Mohamedy, E Shaeer, M Khattab, M H Mochtar, F van der Veen
STUDY QUESTION: In subfertile women with poor ovarian reserve undergoing IVF does a mild ovarian stimulation strategy lead to comparable ongoing pregnancy rates in comparison to a conventional ovarian stimulation strategy? SUMMARY ANSWER: A mild ovarian stimulation strategy in women with poor ovarian reserve undergoing IVF leads to similar ongoing pregnancy rates as a conventional ovarian stimulation strategy. WHAT IS KNOWN ALREADY: Women diagnosed with poor ovarian reserve are treated with a conventional ovarian stimulation strategy consisting of high-dose gonadotropins and pituitary downregulation with a long mid-luteal start GnRH-agonist protocol...
November 11, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27836978/a-homozygous-nobox-truncating-variant-causes-defective-transcriptional-activation-and-leads-to-primary-ovarian-insufficiency
#9
Lin Li, Binbin Wang, Wei Zhang, Beili Chen, Minna Luo, Jing Wang, Xi Wang, Yunxia Cao, Kehkooi Kee
STUDY QUESTION: Does a novel homozygous NOBOX truncating variant, identified in whole exome sequencing (WES) of patients with primary ovarian insufficiency (POI), cause defective transcriptional activation of multiple oocyte-related genes? SUMMARY ANSWER: A novel homozygous truncating mutation of NOBOX was confirmed to exhibit a loss-of-function effect using well-defined molecular and functional analyses. WHAT IS KNOWN ALREADY: Several NOBOX mutations have been reported to be associated with POI but all of them are heterozygous mutations...
November 11, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27836977/impaired-telomere-length-and-telomerase-activity-in-peripheral-blood-leukocytes-and-granulosa-cells-in-patients-with-biochemical-primary-ovarian-insufficiency
#10
Xiaofei Xu, Xinxia Chen, Xiruo Zhang, Yixun Liu, Zhao Wang, Peng Wang, Yanzhi Du, Yingying Qin, Zi-Jiang Chen
STUDY QUESTION: Are telomere length and telomerase activity associated with biochemical primary ovarian insufficiency (POI)? SUMMARY ANSWER: Shortened telomere length and diminished telomerase activity were associated with biochemical POI. WHAT IS KNOWN ALREADY: POI is a result of pathological reproductive aging and encompasses occult, biochemical and overt stages. Studies have indicated telomere length as a biomarker for biological aging...
November 11, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27827322/peri-muscular-adipose-tissue-may-play-a-unique-role-in-determining-insulin-sensitivity-resistance-in-women-with-polycystic-ovary-syndrome
#11
Shannon A Morrison, Amy M Goss, Ricardo Azziz, Dheeraj A Raju, Barbara A Gower
STUDY QUESTION: Do the determinants of insulin sensitivity/resistance differ in women with and without polycystic ovary syndrome (PCOS)? SUMMARY ANSWER: Peri-muscular thigh adipose tissue is uniquely associated with insulin sensitivity/resistance in women with PCOS, whereas adiponectin and thigh subcutaneous adipose are the main correlates of insulin sensitivity/resistance in women without PCOS. WHAT IS KNOWN ALREADY: In subject populations without PCOS, insulin sensitivity/resistance is determined by body fat distribution and circulating concentrations of hormones and pro-inflammatory mediators...
November 8, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27827323/sequence-variation-at-klk-and-wfdc-clusters-and-its-association-to-semen-hyperviscosity-and-other-male-infertility-phenotypes
#12
Patrícia Isabel Marques, Filipa Fonseca, Ana Sofia Carvalho, Diana A Puente, Isabel Damião, Vasco Almeida, Nuno Barros, Alberto Barros, Filipa Carvalho, Mikel Azkargorta, Felix Elortza, Hugo Osório, Rune Matthiesen, Victor Quesada, Susana Seixas
STUDY QUESTION: Are kallikreins (KLKs), the whey-acidic-protein four-disulfide core domain (WFDCs) and their neighbors, semenogelins (SEMGs), known to play a role in the cascade of semen coagulation and liquefaction, associated with male infertility? SUMMARY ANSWER: Several KLK and SEMG variants are overrepresented among hyperviscosity, asthenozoospermia and oligozoospermia, supporting an effect of abnormal semen liquefaction on the loss of semen quality and in lowering male reproductive fitness...
November 7, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27821708/no-increased-risk-of-major-congenital-anomalies-or-adverse-pregnancy-or-neonatal-outcomes-following-letrozole-use-in-assisted-reproductive-technology
#13
T Tatsumi, S C Jwa, A Kuwahara, M Irahara, T Kubota, H Saito
STUDY QUESTION: Does letrozole use increase the risk of major congenital anomalies and adverse pregnancy and neonatal outcomes in fresh, single-embryo transfer? SUMMARY ANSWER: Letrozole significantly decreases the risk of miscarriage and does not increase the risk of major congenital anomalies or adverse pregnancy or neonatal outcomes compared with natural cycles in patients undergoing ART. WHAT IS KNOWN ALREADY: Letrozole is the most commonly used aromatase inhibitor for mild ovarian stimulation in ART...
November 7, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27821707/the-cannabinoid-receptor-cb1-contributes-to-the-development-of-ectopic-lesions-in-a-mouse-model-of-endometriosis
#14
Ana-Maria Sanchez, Federica Quattrone, Maria Pannese, Adele Ulisse, Massimo Candiani, Javier Diaz-Alonso, Guillermo Velasco, Paola Panina-Bordignon
STUDY QUESTION: Does signaling via the cannabinoid (CB1) receptor play a role in the pathogenesis of endometriosis in a mouse model? SUMMARY ANSWER: Mice treated with a CB1 agonist developed larger ectopic lesions, while less severe lesions developed in the absence of functional CB1 expression. WHAT IS KNOWN ALREADY: The expression of components of the endocannabinoid system has been demonstrated in both mouse and human uteri. CB1 receptors are expressed in human epithelial and stromal cell lines derived from eutopic endometrium and deep infiltrating endometriosis nodules...
November 7, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27821706/longitudinal-follow-up-in-female-childhood-cancer-survivors-no-signs-of-accelerated-ovarian-function-loss
#15
A L F van der Kooi, M M van den Heuvel-Eibrink, A van Noortwijk, S J C M M Neggers, S M F Pluijm, E van Dulmen-den Broeder, W van Dorp, J S E Laven
STUDY QUESTION: Is the long-term decline of ovarian function, as reflected by a decrease in serum anti-Müllerian hormone (AMH) concentration, accelerated over time in female childhood cancer survivors (CCS) as compared to healthy women of the same age? SUMMARY ANSWER: The median decline of AMH levels in long-term female CCS is not accelerated and similar to that observed in healthy controls. WHAT IS KNOWN ALREADY: Gonadal function is compromised in female CCS treated with chemotherapy and/or radiation therapy...
November 7, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27816927/use-of-testicular-sperm-for-icsi-in-oligozoospermic-couples-how-far-should-we-go
#16
REVIEW
Armand Zini, Phil V Bach, Ahmad H Al-Malki, Peter N Schlegel
In 1992 and subsequently, several reports indicated that ICSI was a successful technique to achieve clinical pregnancy and live birth using spermatozoa with severely impaired characteristics. The initial optimism over the ability of ICSI to overcome significant sperm abnormalities was later tempered by the findings of more recent publications suggesting that some sperm deficits may not be as effectively treated with ICSI. In search for effective treatment for couples with severe male factor, a number of small retrospective and prospective studies have reported high pregnancy and live birth rates using testicular sperm for men with necrozoospermia, cryptozoospermia and oligozoospermia with or without elevated sperm DNA damage...
November 5, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27816926/a-mother-s-gift-of-life-exploring-the-concerns-and-ethical-aspects-of-fertility-preservation-for-mother-to-daughter-oocyte-donation
#17
REVIEW
E M E Balkenende, W Dondorp, M C Ploem, C B Lambalk, M Goddijn, F Mol
With the introduction of oocyte vitrification, a special form of intergenerational intrafamilial medically assisted reproduction (IMAR) has now become feasible: fertility preservation for mother-to-daughter oocyte donation (FPMDD). For girls diagnosed with premature ovarian insufficiency (POI), banking of their mothers' oocytes can preserve the option of having genetically related offspring. Since policy documents on IMAR do not discuss specific concerns raised by FPMDD, clinicians can feel at a loss for guidance with regard to handling these requests...
November 5, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27816925/a-short-course-of-metformin-does-not-reduce-ohss-in-a-gnrh-antagonist-cycle-for-women-with-pcos-undergoing-ivf-a-randomised-placebo-controlled-trial
#18
S L Jacob, C Brewer, T Tang, H M Picton, J H Barth, A H Balen
STUDY QUESTION: Does 'metformin' reduce the incidence of ovarian hyperstimulation syndrome (OHSS) for women with polycystic ovary syndrome (PCOS) undergoing a GnRH antagonist assisted conception treatment cycle? SUMMARY ANSWER: A short course of metformin does not reduce the incidence of OHSS for women with PCOS undergoing a GnRH antagonist treatment cycle. WHAT IS KNOWN ALREADY: Metformin does reduce the incidence of OHSS in a GnRH-agonist treatment cycle...
November 5, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27816924/men-s-knowledge-of-their-own-fertility-a-population-based-survey-examining-the-awareness-of-factors-that-are-associated-with-male-infertility
#19
D Daumler, P Chan, K C Lo, J Takefman, P Zelkowitz
STUDY QUESTION: How knowledgeable are men about the medical, environmental and psychological factors that are associated with male infertility? SUMMARY ANSWER: Men, across most demographic groups, have limited knowledge of the various factors that are associated with male infertility. WHAT IS KNOWN ALREADY: Few surveys have focused on men's knowledge of their own fertility. Studies of both men and women have found that men are comparatively less knowledgeable about issues of fertility and reproductive health...
November 5, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27816923/cryopreservation-of-ovarian-tissue-for-fertility-preservation-in-a-large-cohort-of-young-girls-focus-on-pubertal-development
#20
A K Jensen, C Rechnitzer, K T Macklon, M R S Ifversen, N Birkebæk, N Clausen, K Sørensen, J Fedder, E Ernst, C Yding Andersen
STUDY QUESTION: Is there an association between the need for medical puberty induction and the diagnosis or treatment received in girls who have undergone cryopreservation of ovarian tissue for fertility preservation? SUMMARY ANSWER: There was a clear association between the intensity of treatment received and requirement for medical puberty induction but no association with the diagnosis. WHAT IS KNOWN ALREADY: Although it cannot be predicted which girls will become infertile or develop premature ovarian insufficiency (POI) following intensive chemotherapy or irradiation, patients who are at high risk of POI should be offered ovarian tissue cryopreservation (OTC)...
November 5, 2016: Human Reproduction
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