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https://www.readbyqxmd.com/read/27931129/comparison-of-intracytoplasmic-sperm-injection-with-testicular-spermatozoa-success-in-infertile-men-with-obstructive-and-non-obstructive-azoospermia-a-retrospective-analysis
#1
Ibrahim Yalcin, Bulent Berker, Yavuz Emre Sukur, Korhan Kahraman, Can Ates
The aim of this study was to compare the outcome of intracytoplasmic sperm injection (ICSI) and embryo transfer between couples with infertility due to male non-obstructive azoospermia (NOA) and obstructive azoospermia (OA). A retrospective analysis of 234 couples with azoospermia who were treated by ICSI and embryo transfer between January 2007 and October 2010 was performed. There were 61 couples in NOA group and 173 couples in OA group. Fertilization rates, pregnancy and clinical pregnancy rates were the main outcome measures...
December 8, 2016: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/27921336/magnetic-anisotropy-in-pentacoordinate-ni-ii-and-co-ii-complexes-unraveling-electronic-and-geometrical-contributions
#2
Talal Mallah, Benjamin Cahier, Mauro Perfetti, Georges Zakhia, Daoud Naoufal, Fatima El-Khatib, Régis Guillot, Eric Rivière, Roberta Sessoli, Anne-Laure Barra, Nathalie Guihéry
The magnetic properties of the pentacoordinated [MII(Me4cyclam)N3]+ (Me4cyclam = tetramethylcyclam; N3 = azido and M = Ni and Co) complexes were investigated. Magnetization and EPR studies indicate that they possess an easy plane of magnetization with the axial anisotropy parameters D being close to 22 and larger than 30 cm-1 for the Ni and Co derivative, respectively. Ab initio calculations reproduce the experimental values of the zero field splitting parameters and allow determining the orientation of the anisotropy tensor axes with respect to the molecular frame...
December 6, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27920480/comparison-of-multichannel-intraluminal-impedance-ph-monitoring-and-reflux-scintigraphy-in-pediatric-patients-with-suspected-gastroesophageal-reflux
#3
Nuray Uslu Kızılkan, Murat Fani Bozkurt, Inci Nur Saltık Temizel, Hülya Demir, Aysel Yüce, Biray Caner, Hasan Özen
AIM: To evaluate the agreement of multichannel intraluminal impedance-pH monitoring (MII-pHM) and gastroesophageal reflux scintigraphy (GES) for the diagnosis of gastroesophageal reflux disease. METHODS: Seventy-five consecutive patients with suspected gastroesophageal reflux disease (GERD) underwent 24-h combined MII-pHM recording and one hour radionuclide scintigraphy during the course of the MII-pHM study. Catheters with 6 impedance channels and 1 pH sensor were placed transnasally...
November 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27880068/human-hair-follicle-associated-pluripotent-hhap-stem-cells-differentiate-to-cardiac-muscle-cells
#4
Natsuko Tohgi, Koya Obara, Masateru Yashiro, Yuko Hamada, Nobuko Arakawa, Sumiyuki Mii, Ryoichi Aki, Robert M Hoffman, Yasuyuki Amoh
We have previously demonstrated that the nestin-expressing hair follicle-associated-pluripotent (HAP) stem cells are located in the bulge area. HAP stem cells have been previously shown to differentiate to neurons, glial cells, keratinocytes, smooth-muscle cells, melanocytes and cardiac-muscle cells in vitro. Subsequently, we demonstrated that HAP stem cells could effect nerve and spinal cord regeneration in mouse models, differentiating to Schwann cells and neurons. In previous studies, we established an efficient protocol for the differentiation of cardiac-muscle cells from mouse HAP stem cells...
November 23, 2016: Cell Cycle
https://www.readbyqxmd.com/read/27879453/effects-of-supplementation-of-human-endometriotic-fluids-on-in-vitro-mouse-preantral-follicle-culture
#5
Seul Ki Kim, Byung Chul Jee, Seok Hyun Kim
This study aimed to investigate the potential detrimental effect of human endometriotic fluids (EFs) on in vitro growth of mouse preantral follicles. Preantral follicles (isolated from ovaries of 7- to 8-week-old mice) were cultured in growth medium for 10 days and then in maturation medium for 2 days. During in vitro culture, EF supernatants (0%, 2.5%, 5%, and 10%) were supplemented. Meiotic spindle integrity of metaphase II (MII) oocytes was analyzed. Hormone (17β-estradiol and anti-Müllerian hormone [AMH]) levels in the final spent media were measured by enzyme-linked immunosorbent assay...
November 21, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27879451/tetraspanins-and-mouse-oocyte-microvilli-related-to-fertilizing-ability
#6
Achraf Benammar, Ahmed Ziyyat, Brigitte Lefèvre, Jean-Philippe Wolf
Our electron microscopy observations demonstrate for the first time that the number of microvilli on the mice oocyte membrane decreases when meiosis progresses from prophase I to metaphase II (MII) stage, and the morphology of the microvilli also changes. Microvilli are significantly shorter and larger on the ovulated oocyte membrane than at the previous stages. Although clathrin vesicles clearly disappear during oocyte maturation, exosome-like vesicles begin to be secreted at the metaphase I stage, more strongly at the MII stage...
November 21, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27870281/cover-image-volume-118-number-1-january-2017
#7
Yasunori Tome, Shuya Yano, Naotoshi Sugimoto, Sumiyuki Mii, Michael Bouvet, Hiroyuki Tsuchiya, Fuminori Kanaya, Robert M Hoffman
Cover: The cover image, by Robert M. Hoffman et al., is based on the Article Use of αv Integrin Linked to GFP to Image Molecular Dynamics in Trafficking Cancer-Cell Emboli, DOI: 10.1002/jcb.25603.
January 2017: Journal of Cellular Biochemistry
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
#8
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/27862569/fibroblast-growth-factor-10-markedly-improves-in-vitro-maturation-of-porcine-cumulus-oocyte-complexes
#9
Yeo-Jin Son, Seung-Eun Lee, Hyuk Hyun, Min-Young Shin, Yun-Gwi Park, Sang-Gi Jeong, Eun-Young Kim, Se-Pill Park
Growth factors synthesized by ovarian somatic cells affect cumulus cell expansion and oocyte maturation in vitro. Fibroblast growth factor 10 (FGF10), for example, is a known regulator of mammalian cumulus-oocyte complex maturation. In this study, we investigated the effects of 0, 5, 10, 50, and 100 ng/mL FGF10 (5F, 10F, 50F, and 100F, respectively) on in vitro cumulus cell expansion, oocyte maturation, and embryo development. The percentage of fully expanded cumulus cells at the oocyte's metaphase-II (MII) stage was significantly higher in the 10F-treated group than in the control...
November 11, 2016: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/27852688/the-role-of-intracytoplasmic-sperm-injection-in-non-male-factor-infertility-in-advanced-maternal-age
#10
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/27845423/glycine-increases-preimplantation-development-of-mouse-oocytes-following-vitrification-at-the-germinal-vesicle-stage
#11
Xin-Yan Cao, Jack Rose, Shi-Yong Wang, Yong Liu, Meng Zhao, Ming-Jie Xing, Tong Chang, Baozeng Xu
Ice-free cryopreservation, referred to as vitrification, is receiving increased attention in the human and animal assisted reproduction. However, it introduces the detrimental osmotic stress by adding and removing high contents of cryoprotectants. In this study, we evaluated the effects of normalizing cell volume regulation by adding glycine, an organic osmolyte, during vitrification of mouse germinal vesicle stage oocyte and/or subsequent maturation on its development. The data showed that glycine supplementation in either vitrification/thawing or maturation medium significantly improved the cytoplasmic maturation of MII oocytes manifested by spindle assembly, chromosomal alignment, mitochondrial distribution, euploidy rate, and blastocyst development following fertilization in vitro, compared to the control without glycine treatment...
November 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27826797/the-cohesion-stabilizer-sororin-favors-dna-repair-and-chromosome-segregation-during-mouse-oocyte-meiosis
#12
Chun-Jie Huang, Yi-Feng Yuan, Di Wu, Faheem Ahmed Khan, Xiao-Fei Jiao, Li-Jun Huo
Maintenance and timely termination of cohesion on chromosomes ensures accurate chromosome segregation to guard against aneuploidy in mammalian oocytes and subsequent chromosomally abnormal pregnancies. Sororin, a cohesion stabilizer whose relevance in antagonizing the anti-cohesive property of Wings-apart like protein (Wapl), has been characterized in mitosis; however, the role of Sororin remains unclear during mammalian oocyte meiosis. Here, we show that Sororin is required for DNA damage repair and cohesion maintenance on chromosomes, and consequently, for mouse oocyte meiotic program...
November 8, 2016: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/27821190/information-about-methods-received-by-contraceptive-users-in-india
#13
Anrudh K Jain
Very little is known, at national and state levels, about how much information women in India are receiving about the method of contraception they are using. The purpose of this study was to fill this gap in knowledge. A Method Information Index (MII) was calculated from the responses of women who started using a modern contraceptive method five years prior to interview, and who were still using it at the time of interview, in the third National Family Health Survey conducted in India in 2005-06. The women were asked whether at the time they initiated contraceptive use they were told about other methods they could use, the side-effects of their selected method and what to do if they experienced these side-effects...
November 8, 2016: Journal of Biosocial Science
https://www.readbyqxmd.com/read/27815908/synchronization-of-in-vitro-maturation-in-porcine-oocytes
#14
Tamás Somfai, Yuji Hirao
When removed from the follicles, during the 44 h process of in vitro maturation (IVM) fully grown porcine oocytes resume meiosis spontaneously from the late diplotene stage of the first meiotic prophase and proceed to the metaphase-II (MII) stage at which they remain arrested until fertilization. However, the spontaneous resumption may start at various times causing heterogeneity in the nuclear stage and also in cytoplasmic characteristics within a population. Those oocytes that reach the MII stage earlier than others undergo an aging process which is detrimental for further embryo development...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27804042/esophageal-mucosal-integrity-improves-after-laparoscopic-antireflux-surgery-in-children-with-gastroesophageal-reflux-disease
#15
Femke A Mauritz, Nicolaas F Rinsma, Ernest L W van Heurn, Cornelius E J Sloots, Peter D Siersema, Roderick H J Houwen, David C van der Zee, Ad A M Masclee, José M Conchillo, Maud Y A Van Herwaarden-Lindeboom
BACKGROUND: Esophageal intraluminal baseline impedance reflects the conductivity of the esophageal mucosa and may be an instrument for in vivo evaluation of mucosal integrity in children with gastroesophageal reflux disease (GERD). Laparoscopic antireflux surgery (LARS) is a well-established treatment option for children with proton pump inhibitory (PPI) therapy resistant GERD. The effect of LARS in children on baseline impedance has not been studied in detail. The aim of this study was to evaluate the effect of LARS on baseline impedance in children with GERD...
November 1, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27780517/effect-and-possible-mechanisms-of-melatonin-treatment-on-the-quality-and-developmental-potential-of-aged-bovine-oocytes
#16
Shuang Liang, Jing Guo, Jeong-Woo Choi, Nam-Hyung Kim, Xiang-Shun Cui
After reaching the metaphase II (MII) stage, unfertilised oocytes undergo a time-dependent process of quality deterioration referred to as oocyte aging. The associated morphological and cellular changes lead to decreased oocyte developmental potential. This study investigated the effect of exogenous melatonin supplementation on in vitro aged bovine oocytes and explored its underlying mechanisms. The levels of cytoplasmic reactive oxygen species and DNA damage response in bovine oocytes increased during in vitro aging...
October 26, 2016: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/27779472/embelin-supplementation-of-in-vitro-maturation-medium-does-not-influence-nuclear-and-cytoplasmic-maturation-of-pig-oocytes
#17
G Galeati, E Giaretta, A Zannoni, D Bucci, C Tamanini, M Forni, M Spinaci
Oxidative stress caused from in vitro culture contributes to inadequate oocyte maturation which leads to a poor embryo development. Therefore, it is important to protect oocytes and embryos against oxidative stress. This study was aimed at evaluating the effect of Embelin (2,5-dihydroxy-3-undecyl-1,4-benzoquinone), an antioxidant with various pharmacologic activities, on nuclear and cytoplasmic maturation of pig oocytes as well as on steroidogenesis of cumulus cells (CCs). Another objective was to determine the influence of Embelin on developmental competence of pig oocytes as well as the expression levels of three key genes (Nanog, Sox2 and Oct4) involved in the control of pluripotency in parthenogenetically activated embryos...
August 2016: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/27778419/baseline-impedance-measured-during-high-resolution-esophageal-impedance-manometry-reliably-discriminates-gerd-patients
#18
K Ravi, D M Geno, M F Vela, M D Crowell, D A Katzka
BACKGROUND: Baseline impedance measured with ambulatory impedance pH monitoring (MII-pH) and a mucosal impedance catheter detects gastroesophageal reflux disease (GERD). However, these tools are limited by cost or patient tolerance. We investigated whether baseline impedance measured during high-resolution impedance manometry (HRIM) distinguishes GERD patients from controls. METHODS: Consecutive patients with clinical HRIM and MII-pH testing were identified. Gastroesophageal reflux disease was defined by esophageal pH <4 for ≥5% of both the supine and total study time, whereas controls had an esophageal pH <4 for ≤3% of the study performed off PPI...
October 24, 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27769085/role-of-intraluminal-esophageal-impedance-baseline-in-the-diagnosis-of-esophagitis-in-children
#19
Miguel Couselo, Vicente Ibáñez, Javier Lluna, Juan José Vila
Introduction Low values of esophageal impedance baseline (EIB) have been related to esophagitis. The aim of this study was to evaluate the diagnostic performance of EIB for erosive esophagitis (ErE) and histological esophagitis (HiE) in children studied for gastroesophageal reflux. Material and Methods Children who underwent esophageal multichannel intraluminal impedance-pH monitoring (MII-pH) and upper-endoscopy with esophageal biopsies were studied retrospectively. EIB values were obtained by MII-pH. ErE was assessed by endoscopy following the Hetzel-Dent classification; HiE was defined by basal zone hyperplasia, papillary lengthening, or inflammatory infiltration...
October 21, 2016: European Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27756876/suppression-of-skin-tumorigenesis-in-cd109-deficient-mice
#20
Masaki Sunagawa, Shinji Mii, Atsushi Enomoto, Takuya Kato, Yoshiki Murakumo, Yukihiro Shiraki, Naoya Asai, Masato Asai, Masato Nagino, Masahide Takahashi
CD109 is a glycosylphosphatidylinositol-anchored glycoprotein that is highly expressed in several types of human cancers, particularly squamous cell carcinomas. We previously reported that CD109-deficient mice exhibit epidermal hyperplasia and chronic skin inflammation. Although we found that CD109 regulates differentiation of keratinocytes in vivo, the function of CD109 in tumorigenesis remains unknown. In this study, we investigated the role of CD109 in skin tumorigenesis using a two-stage carcinogenesis model in CD109-deficient mice with chronic skin inflammation...
October 14, 2016: Oncotarget
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