نتایج جستجو برای: icsi cumulase

تعداد نتایج: 4608  

Journal: :Reproductive biomedicine online 2007
Alex C Varghese Eric Goldberg Ashok Agarwal

Intracytoplasmic sperm injection (ICSI) is an increasingly popular means of treating infertility in couples who wish to conceive. However, there are many potential complications that can be faced by the clinician while performing ICSI. These complications and other related issues are discussed, with an emphasis on understanding how these issues are being resolved, or how they can be resolved in...

Journal: :Fetal diagnosis and therapy 2013
Melanie A J Engels Eva Pajkrt Dominique T Groot Roel Schats Jos W R Twisk John M G van Vugt

OBJECTIVE To validate previously computed correction factors for free β-human chorionic gonadotrophin (fβ-hCG) and pregnancy-associated plasma protein-A (PAPP-A) in in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) pregnancies with hormone treatment and to determine the effect on false-positive rate (FPR). METHODS Retrospective study on 249 IVF and 250 ICSI cases and 20...

Journal: :The Journal of reproduction and development 2016
Toshinori Oikawa Tomoko Itahashi Takashi Numabe

The purpose of this study was to determine whether dithiothreitol (DTT) treatment of sperm and ethanol activation improve embryo production by intracytoplasmic sperm injection (ICSI). Further, we compared ICSI with standard in vitro fertilization (IVF) in oocytes obtained from cattle. We demonstrated that DTT reduced the disulfide bond in the bovine sperm head. Using oocytes obtained from a sla...

2016
Lin-Tao Xue Rui-Xue Wang Bing He Wei-Ying Mo Li Huang Shi-Kai Wang Xian-Bao Mao Jun-Ping Cheng Yue-Yue Huang RuiZhi Liu

Objective To investigate the effect of sperm DNA fragmentation on the fertilization rate, embryo development and pregnancy outcome of in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) in a cohort of Chinese couples. Methods Infertile couples that had undergone assisted reproductive technology at our centre between January 2011 and December 2013 were included in this retro...

Journal: :Human reproduction 2005
M Bonduelle U-B Wennerholm A Loft B C Tarlatzis C Peters S Henriet C Mau A Victorin-Cederquist A Van Steirteghem A Balaska J R Emberson A G Sutcliffe

BACKGROUND Over a million children have been born from assisted conception worldwide. Newer techniques being introduced appear less and less 'natural', such as intracytoplasmic sperm injection (ICSI), but there is little information on these children beyond the neonatal period. METHODS 540 ICSI conceived 5-year-old children from five European countries were comprehensively assessed, along wit...

Journal: :European journal of obstetrics, gynecology, and reproductive biology 2010
Ana L Mauri Claudia G Petersen Joao Batista A Oliveira Fabiana C Massaro Ricardo L R Baruffi Jose G Franco

OBJECTIVE To evaluate whether intracytoplasmic morphologically selected sperm injection (IMSI) could influence early paternal effects by observing embryo quality at day 2. STUDY DESIGN The study included 30 couples with at least one of the following criteria: male factor infertility, at least 2 previous failures of implantation or previous miscarriages after IVF/ICSI. Sibling oocytes of each ...

Journal: :Fertility and sterility 2004
Michael R Virro Kjersten L Larson-Cook Donald P Evenson

OBJECTIVE To determine the relationship between sperm chromatin structure assay (SCSA) parameters (DNA fragmentation index [DFI] and high DNA stainability [HDS]), and conventional IVF and IVF/intracytoplasmic sperm injection (ICSI) outcomes. DESIGN Retrospective review and prospective study. SETTING Private IVF clinic. PATIENT(S) Two hundred forty-nine couples undergoing first IVF and/or ...

2015
Moez Kdous Fethi Zhioua Amel Zhioua

Objective: To study the outcome of ICSI conceived children in our IVF center; their growth, their psychomotor development and to find out possible birth defects and genetic anomalies. Material and Methods: This is a prospective survey about ICSI conceived children and naturally conceived children in our IVF center over the period between 2007 and 2012. One hundred ICSI children aged between 2 a...

Journal: :JAMA 2015
Sheree L Boulet Akanksha Mehta Dmitry M Kissin Lee Warner Jennifer F Kawwass Denise J Jamieson

IMPORTANCE Intracytoplasmic sperm injection (ICSI) is increasingly used in patients without severe male factor infertility without clear evidence of a benefit over conventional in vitro fertilization (IVF). OBJECTIVE To assess national trends and reproductive outcomes for fresh IVF cycles (embryos transferred without being frozen) following the use of ICSI compared with conventional IVF with ...

2011
Katja Knez Branko Zorn Tomaz Tomazevic Eda Vrtacnik-Bokal Irma Virant-Klun

BACKGROUND Sperm of poor quality can negatively affect embryo development to the blastocyst stage. The aim of this comparative prospective randomized study was to evaluate the role of an intracytoplasmic morphologically selected sperm injection (IMSI) in the same infertile couples included in the programme of intracytoplasmic sperm injection (ICSI) due to their indications of male infertility w...

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