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Male-mediated developmental toxicity.

Diana Anderson1, Thomas E Schmid, Adolf Baumgartner

  • 1Division of Medical Sciences, School of Life Sciences, University of Bradford, Bradford West Yorkshire, BD, United Kingdom.

Asian Journal of Andrology
|December 27, 2013
PubMed
Summary
This summary is machine-generated.

Male-mediated developmental toxicity, involving genetic and epigenetic factors, can be transmitted from fathers to offspring. This includes damage from environmental exposures like radiation and chemicals.

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Area of Science:

  • Reproductive Toxicology
  • Developmental Biology
  • Genetics

Background:

  • Male-mediated developmental toxicity has been a recognized concern since the early 1990s.
  • Historical awareness heightened due to reports linking paternal occupational exposures to childhood leukemia.
  • Both human and animal studies have informed the understanding of paternal effects on offspring development.

Purpose of the Study:

  • To review and synthesize current knowledge on male-mediated developmental toxicity.
  • To highlight the evolving understanding of sperm's role in transmitting parental exposures.
  • To emphasize the complex genetic and epigenetic mechanisms involved.

Main Methods:

  • Review of historical human and animal studies on paternal exposure effects.
  • Inclusion of recent molecular findings on sperm components (histones, protamines, RNA).
  • Consideration of epidemiological data and molecular approaches to assess transmitted damage.

Main Results:

  • Animal studies indicated potential transmission of genetic damage from paternal radiation/chemical exposure.
  • Sperm chromatin structure, histone retention, protamine incorporation, DNA methylation, and RNA transcripts are implicated.
  • Recent molecular studies confirm transmission of DNA damage from smoking fathers and radiation-exposed fathers (Chernobyl).

Conclusions:

  • Paternally transmitted damage to offspring is a complex phenomenon.
  • It involves both direct genetic alterations and epigenetic modifications.
  • Understanding these mechanisms is crucial for assessing risks associated with paternal exposures.