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Cisplatin disrupts mammalian spermatogenesis, but does not affect recombination or chromosome segregation [An article from: Mut.Res.-Genetic Toxicology and Environmental Mutagenesis] | Digital

by S.M. Cherry (Author), P.A. Hunt (Author), T.J. Hassold (Author)

List Price:

$8.95

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Available for download now

Binding:

Digital

Publisher:

Elsevier

Publication Date:

December 12, 2004

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Product Description
This digital document is a journal article from Mut.Res.-Genetic Toxicology and Environmental Mutagenesis, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: Meiotic recombination is initiated by a series of double-strand breaks (DSBs) in areas of the genome that generally contain promoters and feature an open chromatin configuration [T.D. Petes, Meiotic recombination hot spots and cold spots, Nat. Rev. Genet. 2 (2001) 360-369]. To investigate whether induced DSBs likewise lead to recombinational repair and whether the placement of new exchange events alters normal patterns of recombination, we used the chemotherapeutic drug cisplatin (CP) to generate additional DSBs throughout the mouse genome. Treatment with CP impaired spermatogenesis, as exhibited by reductions in sperm counts, reductions in both testicular size and weight, changes in the distribution of cells at various prophase I substages, prolonged increases in germ cell apoptosis, and an increased incidence of synaptic abnormalities. Unexpectedly, however, no obvious effect on genome-wide recombination levels in CP-treated animals was observed, nor was the level of aneuploidy increased in sperm from exposed males.