Results 241 to 250 of about 138,948 (288)

Failure of fertilization in in vitro fertilization: The ?Occult? male factor

Journal of in Vitro Fertilization and Embryo Transfer: IVF, 1988
Failure of fertilization in patients undergoing in vitro fertilization (IVF) deserves extensive analysis for better prediction of the success or failure of this therapeutic modality. Consequently, we retrospectively studied the 52 couples in whom fertilization failed during Norfolk series 18 to 25, in an effort to establish the precise causes of ...
Sergio Oehninger
exaly   +3 more sources

Intracytoplasmic sperm injection overcomes previous fertilization failure with conventional in vitro fertilization

Fertility and Sterility, 1999
To evaluate the outcome of intracytoplasmic sperm injection (ICSI) in patients with previous idiopathic fertilization failure (< or =20% fertilization rate) after conventional IVF.Retrospective analysis.IVF program at a university medical center.Twenty-five patients who underwent 38 ICSI cycles after experiencing unexplained fertilization failure with ...
C A, Benadiva, J, Nulsen, L, Siano, J, Jennings, H B, Givargis, D, Maier   +5 more
exaly   +3 more sources

Total Fertilization Failure: A Single Center Analysis

Reproductive Sciences, 2023
Our main objective was to identify the male and female parameters associated with total fertilization failure (TFF) in IVF with nonmasculine indications. The present work, IRB equivalent INS 63209, is a case-control study that evaluated all cases with TFF after conventional IVF at the Center for Human Reproduction from January 2010 to December 2019 (n =
Lisiane Knob de Souza, João Paulo Duarte Witusk, Bruna Campos Galgaro, Luíza da Silva Rodrigues, João Sabino Lahorgue da Cunha-Filho   +4 more
openaire   +2 more sources

Implantation failure following in-vitro fertilization

Current Opinion in Obstetrics & Gynecology, 2006
Embryo implantation remains the rate-limiting step in assisted conception programmes. Factors affecting the interactions between blastocyst and endometrium are subjects of current research and, sadly, have also been the subjects of much confusion.
Bolarinde, Ola, Tin-Chiu, Li
openaire   +2 more sources

Complete Fertilization Failure in ICSI

Human Cell, 2008
Fertilization failure is one of the causes of infertility that becomes evident only after in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) have been attempted. Although the frequency of incidence of fertilization failure is low, if fertilization failure is encountered, medical treatment is usually stopped and serious ...
openaire   +2 more sources

Fertility, Education, and Market Failures [PDF]

Journal of African Development, 2002
We show that coordination failures may be part of an explanation for the demographic differences between rich and poor countries and their differing attitudes towards the use of child labor. Our analysis is carried out within a two-period, general equilibrium model with endogenous fertility, parental investment in children's education and firms ...
Sylvain Dessy, Stephane Pallage
openaire   +1 more source

Chromosome investigation in in vitro fertilization failure

Journal of Assisted Reproduction and Genetics, 1994
A chromosomal complement of 227 human oocytes was studied to provide information on the frequency and type of chromosomal abnormalities in oocytes failing in vitro fertilization.Normal haploid chromosome complement was found in 54.6%; chromosomal abnormalities consisting of diploid sets were identified in 16.7% and aneuploidy was observed in 26 ...
S, Ma, D K, Kalousek, B H, Yuen, V, Gomel, S, Katagiri, Y S, Moon   +5 more
openaire   +2 more sources

Premature Ovarian Failure: Fertility Challenge

2015
Premature ovarian insufficiency (POI) (also known as premature menopause) is a heterogeneous disorder of multifactorial origin defined as the occurrence of secondary amenorrhoea, hypergonadotropism (follicle-stimulating hormone above 40 IU/L) and hypoestrogenism (oestradiol below 50 pmol/L) in women under the age of 40 years.
Svetlana Vujović, M. Ivović, M. Tančić-Gajić, L. J. Marina, Z. Arizanović, M. Ivanišević, M. Barać, J. Micić, B. Barać, D. Micić   +9 more
openaire   +1 more source

Antisperm antibodies and in vitro fertilization failure

Journal of In Vitro Fertilization and Embryo Transfer, 1985
A new enzyme-linked immunosorbent assay (ELISA)-based test (Zer, Jerusalem) has allowed us to show the presence of antisperm antibodies (1:32 to 1:64) in the blood of 14 (33%) of 32 patients undergoing in vitro fertilization and embryo transfer (IVF-ET) under gonadotropin stimulation.
T, Pexieder, E, Boillat, P, Janecek
openaire   +2 more sources

Assessment of fertilization failure and abnormal fertilization after intracytoplasmic sperm injection (ICSI)

Reproduction, Fertility and Development, 1995
The assessment of fertilization is an important part of intracytoplasmic sperm injection (ICSI) and oocytes are routinely examined about 17 h after injection using Nomarski differential interference contrast optics. However, it is not possible to conclusively determine the aetiology of fertilization anomalies in this manner, so cytological studies were
Flaherty, Sean P., Payne, Dianna, Swann, Nicholas J., Matthews, Colin D.   +3 more
openaire   +2 more sources