alexa How do male germ cells handle DNA damage?


Journal of Neurological Disorders

Author(s): Olsen AK, Lindeman B, Wiger R, Duale N, Brunborg G

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Abstract Male reproductive health has received considerable attention in recent years. In addition to declining sperm quality, fertility problems and increased incidence of testicular cancer, there is accumulating evidence that genetic damage, in the form of unrepaired DNA lesions or de novo mutations, may be transmitted via sperm to the offspring. Such genetic damage may arise from environmental exposure or via endogenously formed reactive species, in stem cells or during spermatogenesis. Damaged testicular cells not removed by apoptosis rely on DNA repair for their genomic integrity to be preserved. To identify factors with potentially harmful effects on testicular cells and to characterise associated risk, a thorough understanding of repair mechanisms in these cells is of particular importance. Based on results from our own and other laboratories, we discuss the current knowledge of different pathways of excision repair in rodent and human testicular cells. It has become evident that, in human spermatogenic cells, some repair functions are indeed non-functional. This article was published in Toxicol Appl Pharmacol and referenced in Journal of Neurological Disorders

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