Journal
HUMAN REPRODUCTION
Volume 23, Issue 9, Pages 2167-2172Publisher
OXFORD UNIV PRESS
DOI: 10.1093/humrep/den229
Keywords
Y chromosome; haplogroup; AZFc; partial deletion
Categories
Funding
- National High Technology Research and Development Program [2004AA216090]
- National Basic Research Program [2004CB518805]
- National Key Technologies RD Program [2006BAL05A08]
Ask authors/readers for more resources
BACKGROUND: Partial AZFc deletions related to testis-specific gene families are common mutations of the Y chromosome, but their contribution to spermatogenic impairment is still unresolved, and the risk factors for the formation of the deletions remain unknown. With this in mind, we investigated the possible association between Y chromosome haplogroups and predisposition to partial AZFc deletions and their effect on spermatogenesis in a Chinese population. METHODS: The haplogrouping was carried out using 12 polymorphic loci on the Y chromosome in 269 non-AZFc-deleted controls with an unknown spermatogenic status and 214 men with a partial AZFc deletion defined by the absence of the sequence-tagged site and sequence family variant loss of the DAZ and CDY1 genes. In the latter group, 57 men had normozoospermia and 157 men had azoo/oligozoospermia. Among these, 122 had a de novo partial AZFc deletion. RESULTS: Y haplogroup distribution differed significantly between men with a de novo partial AZFc deletion and the control group, and between men with a specific subtype of the partial AZFc deletions and the control group. Further, partial AZFc deletions gave rise to spermatogenesis impairment in some Y haplogroups. CONCLUSIONS: The findings indicate that some monophyletic Y chromosomes may be associated with predisposition to specific subtypes of partial AZFc deletion and adverse effect on spermatogenesis. Although these deletions were not confirmed with gene dosage analysis, the results suggest that Y chromosome background is an important factor that affects partial AZFc deletion formation and its contribution to spermatogenic failure.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available