نتایج جستجو برای: mouse icsi

تعداد نتایج: 284627  

Journal: :Human reproduction 2005
Jiann-Loung Hwang Kok-Min Seow Yu-Hung Lin Bih-Chwen Hsieh Lee-Wen Huang Heng-Ju Chen Shih-Chia Huang Chin-Yu Chen Pei-Hsin Chen Chii-Ruey Tzeng

BACKGROUND This study compares the fertilization rate and embryonic development of oocytes randomly inseminated by conventional IVF or ICSI in patients with polycystic ovarian syndrome (PCOS) and normozoospermic semen during IVF cycles. METHODS Sibling oocytes were randomized to be inseminated either by ICSI or IVF. Fertilization rate (two pronuclei/COC), day 2 embryonic morphology and rate o...

Journal: :Human reproduction 2005
Maite de Llanos José Luís Ballescà Cristina Gázquez Ester Margarit Rafael Oliva

BACKGROUND The Y chromosome gr/gr microdeletion eliminates two copies of the DAZ gene and several additional transcriptional units and has been associated as a risk factor for infertility. Our objective was to study the presence of the gr/gr deletion in ICSI candidates in our population and to determine whether the laboratory, clinical and ICSI outcome were different in the gr/gr deleted patien...

Journal: :Human reproduction 1998
A Kowalik G D Palermo L Barmat L Veeck J Rimarachin Z Rosenwaks

The impact of intracytoplasmic sperm injection (ICSI) on cryopreserved zygotes and embryos was evaluated by comparing embryo survival and implantation between embryos derived from ICSI and those derived from standard insemination procedures. The study included patients whose excess zygotes and embryos were cryopreserved between September 1993 and December 1994 and who subsequently underwent a f...

Journal: :Human reproduction 2012
F Belva M Roelants R Painter M Bonduelle P Devroey J De Schepper

BACKGROUND To date, information on the pubertal development of adolescents born after ICSI is scarce, since the very first cohort is only now reaching young adulthood. In this study, pubertal development at the age of 14 was characterized in a longitudinally followed cohort of ICSI-conceived teenagers and compared with that of a spontaneously conceived (SC) control group. METHODS Pubertal dev...

Journal: :Human Reproduction 2023

Abstract Study question Would new embryo properties emerge if fertilization was imposed on oocytes in regions, such as the animal pole, where it does not take place naturally? Summary answer Oocyte at vegetal pole or equator results 2-cell embryos with distinguishable transcriptomes and functional peculiarities. What is known already There bias used basic clinical research, because: 1) sperm–oo...

2014
Mehtab Singh Parmar Chetana Pant K. Karuppanasamy Bhabesh Mili Deepak Upadhyay Vinay Kant

Background: Intracytoplasmic Sperm Injection (ICSI) is one of the methods of assisted reproductive technology that aims to successfully treat male factor infertility in humans and domestic animals. The technique involves mechanically injecting a single sperm or sperm nucleus with the help of a micromanipulator into the cytoplasm of a mature metaphase II oocyte. Results: In domestic animals, ICS...

Journal: :Human reproduction 2004
Gedalia Paz Ami Amit Haim Yavetz

A couple with unexplained infertility was referred for routine IVF and ICSI treatment. Ovulation was induced by the GnRH analogue protocol combined with HMG and HCG. Preparation of denuded oocytes revealed a major disorder of the zona pellucida and abnormal oocytes. During preparation of ova for ICSI, 15 retrieved oocytes were denuded, 14 of which underwent ICSI treatment. Four of the oocytes c...

Journal: :Molecular human reproduction 2015
Sandra Yassine Jessica Escoffier Guillaume Martinez Charles Coutton Thomas Karaouzène Raoudha Zouari Jean-Luc Ravanat Catherine Metzler-Guillemain Hoi Chang Lee Rafael Fissore Sylviane Hennebicq Pierre F Ray Christophe Arnoult

We recently identified the DPY19L2 gene as the main genetic cause of human globozoospermia. Non-genetically characterized cases of globozoospermia were associated with DNA alterations, suggesting that DPY19L2-dependent globozoospermia may be associated with poor DNA quality. However the origins of such defects have not yet been characterized and the consequences on the quality of embryos genera...

2017
Caizhu Wang Guixue Feng Bo Zhang Jinhui Shu Hong Zhou Xianyou Gan Ruoyun Lin

OBJECTIVE The aim of this study was to explore the effects of the insemination method on the outcomes of elective blastocyst culture. METHODS We retrospectively analyzed the outcomes of elective blastocyst culture performed between January 2011 and December 2014. RESULTS There were 2,003 cycles of conventional in vitro fertilization (IVF) and 336 cycles of intracytoplasmic sperm injection (...

Journal: :Human reproduction update 2002
JohnA Collins

The health economics of IVF and ICSI involve assessments of utilization, cost, cost-effectiveness and ability to pay. In 48 countries, utilization averaged 289 IVF/ICSI cycles per million of population per annum, ranging from two in Kazachstan, to 1657 in Israel. Higher national utilization of IVF/ICSI was associated with higher quality of health services, as indicated by lower infant mortality...

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