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https://www.readbyqxmd.com/read/28527625/cosmetic-micromanipulation-of-vitrified-warmed-cleavage-stage-embryos-does-not-improve-art-outcomes-an-ultrastructural-study-of-fragments
#1
Somayyeh Safari, Mohammad Ali Khalili, Zeinab Barekati, Iman Halvaei, Morteza Anvari, Stefania A Nottola
The aim was to study the ultrastructure of cytoplasmic fragments along with the effect of cosmetic micromanipulation (CM) on the morphology and development of vitrified-warmed embryos as well as assisted reproductive technology (ART) outcomes. A total of 96 frozen embryo transfer (FET) cycles were included in this prospective randomized study. They were divided into three groups of CM (n=32), sham (n=32) and control (n=32). In the CM group, the vitrified- warmed embryos were subjected to fragments and coarse granules removal (cosmetic micromanipulation) after laser assisted zona hatching (LAH); sham group subjected only to LAH and no intervention was taken for the control group...
May 17, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/28525345/in-vitro-production-of-sudanese-camel-camelus-dromedarius-embryos-from-epididymal-spermatozoa-and-follicular-oocytes-of-slaughtered-animals
#2
A E Abdelkhalek, Sh A Gabr, W A Khalil, Sh M Shamiah, L Pan, G Qin, M H Farouk
Application of assisted reproductive technology in camelidea, such as artificial insemination (AI) and embryo transfer, has been slow in comparison to that for other livestock species. In Egypt, there are few attempts to establish in vitro maturation (IVM) and fertilization (IVF) techniques in dromedary camel. The present study was carried out to produce Sudanese camel embryos using in vitro matured oocytes and epididymal spermatozoa. Dromedary camel ovaries were collected from abattoirs and then, the oocytes were aspirated from all the visible follicles on the ovarian surface (~2-8 mm in a diameter)...
March 28, 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28523639/association-mapping-of-yield-and-yield-related-traits-under-reproductive-stage-drought-stress-in-rice-oryza-sativa-l
#3
B P Mallikarjuna Swamy, Noraziyah Abd Aziz Shamsudin, Site Noorzuraini Abd Rahman, Ramil Mauleon, Wickneswari Ratnam, Ma Teressa Sta Cruz, Arvind Kumar
BACKGROUND: The identification and introgression of major-effect QTLs for grain yield under drought are some of the best and well-proven approaches for improving the drought tolerance of rice varieties. In the present study, we characterized Malaysian rice germplasm for yield and yield-related traits and identified significant trait marker associations by structured association mapping. RESULTS: The drought screening was successful in screening germplasm with a yield reduction of up to 60% and heritability for grain yield under drought was up to 78%...
December 2017: Rice
https://www.readbyqxmd.com/read/28523429/kir-lilrb-and-their-ligands-genes-as-potential-biomarkers-in-recurrent-implantation-failure
#4
REVIEW
Izabela Nowak, Karolina Wilczyńska, Jacek R Wilczyński, Andrzej Malinowski, Paweł Radwan, Michał Radwan, Piotr Kuśnierczyk
Reproductive failure in humans is a very important social and economic problem, because nowadays women decide to conceive later in life and delay motherhood. Unfortunately, with increasing age they have less chance for natural fertilization and maintenance of pregnancy. Many of them need assisted reproductive technology. Approximately 10% of women after in vitro fertilization-embryo transfers experience recurrent implantation failure (RIF). Multiple factors may contribute to RIF, including oocyte and sperm quality, parental chromosomal anomalies, genetic or metabolic abnormalities of the embryo, poor uterine receptivity, immunological disturbances in the implantation site, and some gynecologic pathologies such as endometriosis, uterine fibroids, hydrosalpinx and endometrial polyps...
May 18, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/28523019/use-of-the-internet-related-to-infertility-by-infertile-women-and-men-in-turkey
#5
Duygu Gulec Satir, Oya Kavlak
OBJECTIVE: To determine differences in use of the Internet related to infertility between infertile women and men, whether they benefit or are negatively affected from information on the Internet, and share this information with health professional. METHODS: This cross-sectional study was carried out with 285 infertile women and 158 men between December 2015 and February 2016. Data were collected by a survey Form which included questions related to sociodemographic characteristics, related to infertility (duration of treatment, type of treatment) and questions about use of the Internet...
March 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28521685/weighing-the-impact-of-diet-and-lifestyle-on-female-reproductive-function
#6
Gabriella Garruti, Raffaella De Palo, Maria De Angelisc
In the last years several scientific societies and expert groups focused on the role played by nutritional factors, lifestyle and excess of body fat in interfering with female reproduction and fertility. In many studies a confounding factor is represented by polycystic ovary syndrome (PCOS) which is one of the major causes of infertility where genetic and family factors are certainly playing a role, together with lifestyle and nutritional factors. In an attempt to define "the optimal fertility diet", we will consider the role played by Mediterranean lifestyle and some macronutrients (animal and vegetable proteins) on ovulatory disorders and female fertility also considering some new visions derived from randomized trials of Lifestyle programs in obese Infertile women asking for in vitro fertilization or alternative assisted reproduction technologies...
May 17, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28521061/extracellular-camp-activates-molecular-signalling-pathways-associated-with-sperm-capacitation-in-bovines
#7
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/28520723/follicular-size-predicts-success-in-artificial-insemination-with-frozen-thawed-sperm-in-donkeys
#8
Joseph Saragusty, Alemayehu Lemma, Thomas Bernd Hildebrandt, Frank Göritz
In asses, semen collection, cryopreservation, and artificial insemination (AI) with frozen-thawed semen have been scarcely described and success rate, particularly following AI, is reportedly low. In the absence of reliable protocols, assisted reproductive technologies cannot support the conservation efforts aimed at endangered wild ass species and domestic donkey breeds. Two experiments were conducted in this study. In experiment 1 we evaluated freezing Abyssinian donkey (N = 5, 4 ejaculates each) spermatozoa using three freezing extenders (Berliner Cryomedium + glycerol, BC+G; BotuCrio, BOTU; INRAFreeze, INRA) and two cryopreservation techniques (liquid nitrogen vapour, LNV; directional freezing, DF)...
2017: PloS One
https://www.readbyqxmd.com/read/28518085/analysis-of-chromosome-segregation-histone-acetylation-and-spindle-morphology-in-horse-oocytes
#9
Federica Franciosi, Irene Tessaro, Rozenn Dalbies-Tran, Cecile Douet, Fabrice Reigner, Stefan Deleuze, Pascal Papillier, Ileana Miclea, Valentina Lodde, Alberto M Luciano, Ghylene Goudet
The field of assisted reproduction has been developed to treat infertility in women, companion animals, and endangered species. In the horse, assisted reproduction also allows for the production of embryos from high performers without interrupting their sports career and contributes to an increase in the number of foals from mares of high genetic value. The present manuscript describes the procedures used for collecting immature and mature oocytes from horse ovaries using ovum pick-up (OPU). These oocytes were then used to investigate the incidence of aneuploidy by adapting a protocol previously developed in mice...
May 11, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28515945/exposure-to-occupational-hazards-for-pregnancy-and-sick-leave-in-pregnant-workers-a-cross-sectional-study
#10
Jean-Bernard Henrotin, Monique Vaissière, Maryline Etaix, Mathieu Dziurla, Stéphane Malard, Dominique Lafon
BACKGROUND: This study aimed to investigate the association between exposure to occupational hazards for pregnancy and sick leave (SL) in pregnant workers. METHODS: A cross-sectional study was performed in French occupational health services in 2014. Occupational hazards for pregnancy were assessed by occupational health physicians (OHPs). After delivery and at the time of returning to work, 1,495 eligible workers were interviewed by OHPs. Information on SL was self-reported...
2017: Annals of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28515223/associations-between-male-reproductive-characteristics-and-the-outcome-of-assisted-reproductive-technology-art
#11
Zhangshun Liu, Xiaohong Shi, Lihong Wang, Yan Yang, Qiang Fu, Minfang Tao
This study was designed to investigate the relationships between indicators of male body-mass index (BMI), age, reproductive hormone levels, semen parameters and the outcomes of assisted reproductive technology (ART). The clinical data were collected from 636 couples who underwent ART at the reproductive center involved in our study. Pearson's correlation or Spearman rank correlation was applied to establish the relevant correlation coefficients. The correlation between influence factors' and pregnancy outcomes was analyzed using the Logistic regression model...
May 17, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28514884/the-association-of-placenta-previa-and-assisted-reproductive-techniques-a-meta-analysis
#12
Manoochehr Karami, Ensiyeh Jenabi, Bita Fereidooni
BACKGROUND: Several epidemiological studies have determined that assisted reproductive techniques (ART) can increase the risk of placenta previa. To date, only a meta-analysis has been performed for assessing the relationship between placenta previa and ART. This meta-analysis was conducted to estimate the association between placenta previa and ART in singleton and twin pregnancies. METHODS: A literature search was performed in major databases PubMed, Web of Science, and Scopus from the earliest possible year to April 2017...
May 17, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28514122/-is-anti-thrombotic-prophylaxis-warranted-in-fertility-and-in-vitro-fertilization-treatments
#13
REVIEW
Enav Yefet, Amir Weiss
INTRODUCTION: Assisted reproductive technology (ART) treatments are potential risk factors for thromboembolism (TE) due to excessive estrogen levels. Recently, several studies have shed new light on this matter. AIMS: To review the literature to assess the risk for TE during ART and to establish guidelines regarding thrombophylaxis. METHODS: A search was conducted of PubMed, Medline, Cochrane and clinicaltrials.gov. The search terms were fertility, assisted reproductive technology, IVF, thromboembolism, thrombosis and anticoagulation...
July 2016: Harefuah
https://www.readbyqxmd.com/read/28513460/the-role-of-oxidative-stress-in-female-infertility-and-in-vitro-fertilization
#14
Joanna Wojsiat, Jerzy Korczyński, Marta Borowiecka, Halina Małgorzata Żbikowska
Infertility problem involves many couples of reproductive age. It has been estimated that in Poland 0.7-1.0 million pairs require treatment, while for more than half of them assisted reproduction is the only recommended and effective method. Infertility affects 13 to 15% of the world's population. A major concern is the age-related decline in female fertility even more that often a decision about pregnancy is taken at later age. Recent studies show that increased production of reactive oxygen species is an important factor in etiopathogenesis of pregnancy and affects female reproduction...
May 9, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28508683/effectiveness-of-mild-ovarian-stimulation-versus-gnrh-agonist-protocol-in-women-undergoing-assisted-reproductive-technology-a-meta-analysis
#15
Yuan Fan, Xiaowei Zhang, Zhidong Hao, Huanfei Ding, Quanyu Chen, Li Tian
OBJECTIVE: our meta-analysis was conducted to evaluate the effectiveness of the mild ovulation induction protocol using CC/gonadotropin/GnRH antagonist compared to the conventional GnRH agonist protocol in women undergoing ART. METHOD: Six electronic databases were searched from their date of establishment until August 2016. Outcomes in our analysis were calculated in terms of relative risk (RR) and weighted mean differences (WMD) and standard mean differences (SMD) with 95% confidence intervals (CI) using random effect models or fixed effect models...
May 16, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28508519/fetal-cardiac-remodeling-in-twin-pregnancies-conceived-by-assisted-reproductive-technologies
#16
Brenda Valenzuela-Alcaraz, Mónica Cruz-Lemini, Mérida Rodríguez-López, Ana Goncé, Laura García-Otero, Helena Ayuso, Marta Sitges, Bart Bijnens, Juan Balasch, Eduard Gratacós, Fátima Crispi
BACKGROUND: Recent data suggest that singleton fetuses conceived by assisted reproductive technologies (ART) present cardiovascular remodeling that may persist postnatally. Twin pregnancies are more frequent in the ART population, and are associated with increased adverse perinatal outcomes like hypertensive disorders, gestational diabetes and preterm birth. However, it is unknown whether cardiac remodeling is also present in twin pregnancies conceived by ART. Our aim was to assess the presence of fetal cardiac remodeling and dysfunction in twin pregnancies conceived by ART, as compared to spontaneously conceived (SC) ones...
May 15, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28506951/pharmacokinetic-pharmacodynamic-and-clinical-aspects-of-ovulation-induction-agents-a-review-of-the-literature
#17
Serkan Kahyaoğlu, Bülent Yılmaz, Ahmet Zeki Işık
Controlled ovarian hyperstimulation is a key step for successful outcomes of assisted reproductive technique cycle outcomes. Many medications are available, which are commonly useed solely or in combination to achieve multiple follicular development. Pharmacokinetic, pharmacodynamic, and clinical information of ovulation induction drugs deserve to be elucidated for every individual patient before commencing infertility treatment. New concepts and new treatment protocols are introduced as ovulation physiology is understood by infertility specialists...
March 15, 2017: Journal of the Turkish German Gynecological Association
https://www.readbyqxmd.com/read/28506471/genetics-of-gonadotropins-and-their-receptors-as-markers-of-ovarian-reserve-and-response-in-controlled-ovarian-stimulation
#18
REVIEW
Laura Riccetti, Francesco De Pascali, Lisa Gilioli, Daniele Santi, Giulia Brigante, Manuela Simoni, Livio Casarini
Several controlled ovarian stimulation (COS) protocols have been developed to increase the yield of mature oocytes retrieved in assisted reproductive techniques (ARTs). The ovarian reserve (OR) influences the COS response, and it represents the main parameter that helps clinicians in refining clinical treatments in the perspective of a "personalized" ART. This approach is even more needed in particular conditions such as poor OR or polycystic ovary syndrome. Follicle-stimulating hormone, luteinizing hormone, and human chorionic gonadotropin are currently used in COS at different combinations and with different efficacies, even if the best approach definition is controversial...
April 17, 2017: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/28506226/institutional-delivery-service-utilization-and-associated-factors-among-women-of-reproductive-age-in-the-mobile-pastoral-community-of-the-liban-district-in-guji-zone-oromia-southern-ethiopia-a-cross-sectional-study
#19
Wako Golicha Wako, Dejene Hailu Kassa
BACKGROUND: Globally, an estimated 289,000 maternal deaths occurred in 2013. Majority of these deaths occurred in sub-Saharan Africa and Southern Asia. Mobility of pastoralists is a well-recognized survival strategy in arid and semi-arid land of sub-Saharan Africa. However governments often encourage settlement as a solution to the difficulty of providing health services for mobile pastoralists. This study aimed to assess utilization of institutional delivery and associated factors among women of reproductive age in the mobile pastoral community of the Liban District in Guji zone, Oromia, Ethiopia...
May 15, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28505936/re-relationship-between-paternal-somatic-health-and-assisted-reproductive-technology-outcomes
#20
Craig Niederberger
No abstract text is available yet for this article.
June 2017: Journal of Urology
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