نتایج جستجو برای: genetic infertility
تعداد نتایج: 646021 فیلتر نتایج به سال:
Balanced reciprocal translocations are associated with reproductive failure. Some reciprocal translocation carriers exhibit azoospermia or oligozoospermia, and an association exists between these chromosomal abnormalities and recurrent abortion. Previous reports have indicated the involvement of chromosome 7 translocations in male infertility and recurrent miscarriage. A translocation breakpoin...
infertility can be caused by an unexplained reduction in semen quality in males who present asnormal on physical examination and endocrine testing. there is some evidence that aberrantmetabolism of micronutrients such as choline may play a causative role in male factorinfertility. choline is a crucial factor in the regulation of sperm membrane structure andmotility, and this nutrient plays an i...
So long as procreation continues to remain a central driving force in a marital relationship, and the family the very core of progressive society, efforts will be undertaken to expand the period of fecundity and combat infertility. Genetic planning and eugenic programming are more rational and humane alternatives to population regulation than death by famine and war. Genetic enhancement technol...
Background: The reported prevalence of infertility in Pakistan is 21% of which 35% is contributed by male factor. Male infertility has multifactorial etiologies ranging from modifiable to genetic risk factors. Among all the risk factors that may account for male infertility, obesity is one of the emerging public health problems. Therefore, the aim of the study was to determine the association o...
Background and purpose: Development of the male phenotype and the initiation of spermatogenesis are intricately dependent on the cellular events that respond to androgens. The actions of androgens are mediated by the androgen receptor (AR). The aim of this study was to investigate the association of AR 5'UTR and codon 211 genetic variation with the risk of idiopathic male infertility. Material...
Background: Infertility is a relatively common problem that affects couples worldwide. It is estimated that approximately 1 in 6 couples will experience difficulties in reproducing, defined as a failure to conceive after two years of unprotected sexual intercourse. The molecular and genetic factors underlying the cause of infertility remain largely undiscovered. ITPA is an inosine triphosphatas...
The study of nasal ciliary beat frequency (CBF) and ultrastructure may contribute to the understanding of pathognomonic cases of male infertility associated with defects in sperm motility. This study was designed to report a particular case of male infertility, characterized by the association of two respiratory autosomal recessive genetic diseases (alpha-1-antitrypsin deficiency [AAT-D] and pr...
BACKGROUND The mismatch repair (MMR) pathway plays an important role in the maintenance of the genome integrity, meiotic recombination and gametogenesis. This study investigated whether genetic variations in MMR genes are associated with an increased risk of sperm DNA damage and male infertility. METHODS We selected and genotyped 21 tagging single nucleotide polymorphisms (SNPs) in five MMR g...
Although several genetic causes of male infertility are known, the condition in around 60.0-75.0% of infertile male patients appears to be idiopathic. In some, genetic causes may be polygenic and require several low-penetrance genes to produce a phenotype outcome. In others, pleiotropy, when a gene can produce several phenotypic traits, may be involved. We have investigated whether single nucle...
Chromosomal abnormalities are one of the major causes of male infertility. But the exact mechanism by which chromosomal anomalies induces infertility is still not clear. Many studies have documented the chromosomal abnormalities ranging from 2.2% to 15.7% in infertile men. The present study has been carried out to document and find out the genetic cause of male infertility in the Southern regio...
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