The Y chromosome-linked copy number variations and male fertility
نویسندگان
چکیده
منابع مشابه
The Y chromosome and male fertility and infertility.
Since 1995, thanks to a large number of studies, Y chromosome microdeletion screening has become part of the routine diagnostic work-up of severe male factor infertility. Many initial contradictory issues such as variability in deletion frequency, markers to be tested, presence of deletions in 'fertile' men, and genotype-phenotype correlation has been resolved. Past and present unresolved issue...
متن کاملCopy number variation and microdeletions of the Y chromosome linked genes and loci across different categories of Indian infertile males.
We analyzed 34 azoospermic (AZ), 43 oligospermic (OS), and 40 infertile males with normal spermiogram (INS) together with 55 normal fertile males (NFM) from the Indian population. AZ showed more microdeletions in the AZFa and AZFb regions whereas oligospermic ones showed more microdeletions in the AZFc region. Frequency of the AZF partial deletions was higher in males with spermatogenic impairm...
متن کاملY chromosome and male infertility.
Recent genome analysis of the Y chromosome has increased the number of genes found on this chromosome markedly. Many of these genes in the part of the Y chromosome that does not undergo recombination with the X chromosome are members of gene families. Evolutionary considerations imply that genes on the Y chromosome will degenerate unless they have male advantageous or female deleterious functio...
متن کاملHuman subtelomeric copy number variations.
Copy number variation is a defining characteristic of human subtelomeres. Human subtelomeric segmental duplication regions ('Subtelomeric Repeats') comprise about 25% of the most distal 500 kb and 80% of the most distal 100 kb in human DNA. Huge allelic disparities seen in subtelomeric DNA sequence content and organization are postulated to have an impact on the dosage of transcripts embedded w...
متن کاملRibosomal DNA and Stellate gene copy number variation on the Y chromosome of Drosophila melanogaster.
Multigene families on the Y chromosome face an unusual array of evolutionary forces. Both ribosomal DNA and Stellate, the two families examined here, have multiple copies of similar sequences on the X and Y chromosomes. Although the rate of sequence divergence on the Y chromosome depends on rates of mutation, gene conversion and exchange with the X chromosome, as well as purifying selection, th...
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ژورنال
عنوان ژورنال: Journal of Endocrinological Investigation
سال: 2011
ISSN: 0391-4097,1720-8386
DOI: 10.1007/bf03347463