Results 171 to 180 of about 4,887 (219)

Mutations in CCIN cause teratozoospermia and male infertility

Science Bulletin, 2022
Teratozoospermia is usually associated with defective spermiogenesis and is a disorder with considerable genetic heterogeneity. Although previous studies have identified several teratozoospermia-associated genes, the etiology remains unknown for a majority of affected men.
Yong, Fan, Chenhui, Huang, Juan, Chen, Yanyan, Chen, Yan, Wang, Zhiguang, Yan, Weina, Yu, Haibo, Wu, Ying, Yang, Leitong, Nie, Sijia, Huang, Fangfang, Wang, Haoyu, Wang, Yunfeng, Hua, Qifeng, Lyu, Yanping, Kuang, Ming, Lei   +16 more
exaly   +3 more sources

Genetic aspects of monomorphic teratozoospermia: a review [PDF]

Journal of Assisted Reproduction and Genetics, 2015
Teratozoospermia is characterized by the presence of spermatozoa with abnormal morphology over 85 % in sperm. When all the spermatozoa display a unique abnormality, teratozoospermia is said to be monomorphic. Two forms of monomorphic teratozoospermia, representing less than 1 % of male infertility, are recognized: macrozoospermia (also called ...
Frédéric Morel
exaly   +3 more sources

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Microsurgical fertilization and teratozoospermia

Human Reproduction, 1991
Semen parameters were correlated with the outcome of partial zona dissection (PZD) in 42 couples with male factor infertility. Although fertilization rates were reduced, 12% of the embryos implanted following replacement. Spermatozoa from teratozoospermic sperm populations were able to fuse with oocytes following zona penetration through the artificial
Jacques Cohen, Beth E. Talansky, Henry Malter, Mina Alikani, Alexis Adler, Adrienne Reing, Alan Berkeley, Margaret Graf, Owen Davis, Helen Liu, J.Michael Bedford, Zev Rosenwaks   +11 more
openaire   +2 more sources

Aneuploid spermatozoa in infertile men: Teratozoospermia

Molecular Reproduction and Development, 2002
AbstractWe and others have demonstrated that infertile men who are candidates for intracytoplasmic sperm injection (ICSI) have an increased frequency of chromosomal abnormalities in their sperm. Reports based on prenatal diagnosis of ICSI pregnancies have confirmed the increased frequency of chromosomal abnormalities in offspring.
Cristina, Templado, Tina, Hoang, Calvin, Greene, Alfred, Rademaker, Judy, Chernos, Renée, Martin   +5 more
openaire   +2 more sources

Isolated teratozoospermia and in vitro fertilization

Journal of Assisted Reproduction and Genetics, 1996
To show whether increased amounts of spermatozoa used in insemination of preovulatory oocytes in isolated teratozoospermia according to Kruger's strict criteria gives good fertilization rates.This study was carried out from September 1993 to November 1994 for a total of 77 cycles, with sperm samples classified according to Kruger's strict ...
H, Figueiredo, A, Tavares, L, Ferrás, A, Couceiro, I, Chaves   +4 more
openaire   +2 more sources

Isolated teratozoospermia and intrauterine insemination

Fertility and Sterility, 2003
This study tests the hypothesis that IUI treatment in cases with isolated teratozoospermia (
Carl, Spiessens, Dirk, Vanderschueren, Christel, Meuleman, Thomas, D'Hooghe   +3 more
exaly   +3 more sources

Asthenozoospermia/Teratozoospermia and Infertility

Archives of Andrology, 1990
Abnormal spermiograms with asthenozoospermia and teratozoospermia are often classified as subfertile, and the cause of these findings has been obscure. A new method, the 8-h in vitro motility profile test (MPT), showed a significant difference in motility profile between 130 fertile men and men of infertile couples.
openaire   +2 more sources

Teratozoospermia and its effect on male fertility potential

Andrologia, 1999
Teratozoospermia and its significance for male fertility problems is discussed. Different points of view and available information concerning the phenomenon of teratozoospermia have been presented. Ongoing debate about the influence of sperm morphology on male infertility and IVF results emphasizes the fact that when sperm morphology is evaluated using
M, Szczygiel, M, Kurpisz
exaly   +3 more sources

Teratozoospermia: spotlight on the main genetic actors in the human [PDF]

Human Reproduction Update, 2015
Male infertility affects >20 million men worldwide and represents a major health concern. Although multifactorial, male infertility has a strong genetic basis which has so far not been extensively studied. Recent studies of consanguineous families and of small cohorts of phenotypically homogeneous patients have however allowed the identification of a ...
Charles Coutton, jessica sh Escoffier, Guillaume Martinez   +2 more
exaly   +4 more sources

[DAZL gene polymorphisms and astheno-teratozoospermia].

Zhonghua nan ke xue = National journal of andrology, 2013
To investigate the association between single nucleotide polymorphism (SNP) of the DZAL gene in infertile Han Chinese males with astheno-teratozoospermia.We collected semen samples from 173 infertile Han Chinese men with astheno-teratozoospermia (case group) and 175 age-matched normal male volunteers (control group) for semen routine and morphological ...
Lu-Wei, Ye, Qing-Feng, Yu, Xue-Xi, Yang, Jing-Ping, Li, Xiao-Qiang, Wu, Yong-Hai, Zhang, Xiang-Ming, Mao   +6 more
openaire   +2 more sources