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IJBB Vol.44(6) [December 2007] >


Title: Necessity of nuclear and mitochondrial genome analysis prior to assisted reproductive techniques/intracytoplasmic sperm injection
Authors: Kumar, Rakesh
Bhat, Audesh
Bamezai, R N K
Shamsi, M B
Kumar, R
Gupta, N P
Ammini, A C
Aron, M
Sharma, R K
Dada, Rima
Keywords: Genetic
Azoospermia factor
Mitochondrial DNA
Oxidative phosphorylation
Assisted reproductive techniques
Mutations
Issue Date: Dec-2007
Publisher: CSIR
Abstract: Assisted reproductive technique (ART) has revolutionized the management of severe male factor infertility and in some countries 5% babies are conceived through ART/intra cytoplasmic sperm injection (ICSI). However, the carry-home live birth rate after several ART cycles is low (18-25%) and this is financially, physically and emotionally crippling for the couples. Genetic factors could lead to pre or post-implantation failure and thus explain for low ART success rate. Thus, this study was planned to understand, if infertile men harbour genetic abnormalities which may be iatrogenically transmitted by ART and adversely affect growth potential of embryo. Ninety infertile men underwent semen, cytogenetic, Yq microdeletion and mitochondrial mutation analysis. Of these, 14.4% cases harboured cytogenetic abnormality, and 8.89% Yq microdeletions. A high frequency of mitochondrial mutations was found in 23 men with asthenospermia. It is important to understand that through ART genetic abnormalities are transmitted to offspring, resulting in impaired growth and development potential of embryo and poor take-home live birth rate. Thus, genetic analysis is strongly recommend in all men with idiopathic infertility who opt for ART to counsel couples and provide them with most adapted therapeutics.
Page(s): 437-442
ISSN: 0301-1208
Source:IJBB Vol.44(6) [December 2007]

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