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Human Reproduction Update Advance Access published online on February 15, 2008
Human Reproduction Update, doi:10.1093/humupd/dmm039
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© The Author 2008. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
The online version of this article has been published under an open access model. Users are entitled to use, reproduce, disseminate, or display the open access version of this article for non-commercial purposes provided that: the original authorship is properly and fully attributed; the Journal and Oxford University Press are attributed as the original place of publication with the correct citation details given; if an article is subsequently reproduced or disseminated not in its entirety but only in part or as a derivative work this must be clearly indicated. For commercial re-use, please contact journals.permissions@oxfordjournals.org

Effects of environmental and occupational pesticide exposure on human sperm: a systematic review

Melissa J. Perry

Environmental and Occupational Medicine and Epidemiology Program, Department of Environmental Health, Harvard School of Public Health, 665 Huntington Avenue, Boston, MA 02115, USA

To whom correspondence should be addressed at: Tel: +1-617-432-4645; Fax: +1-617-432-0219; E-mail: mperry{at}hsph.harvard.edu

Relatively recent discoveries of the hormone disrupting properties of some pesticides have raised interest in how contemporary pesticide exposures, which primarily take the form of low level environmental or occupational exposures, impact spermatogenesis. The objective of the present review was to summarize results to date of studies examining pesticide effects on human sperm. Outcomes evaluated included sperm parameters, DNA damage and numerical chromosome aberrations (aneuploidy (disomy, nullisomy) or diploidy). Studies investigating sperm in men environmentally and/or occupationally exposed to any types of pesticides were included in the review. The targeted literature search over the last 15 years showed a range of pesticide classes have been investigated including pyrethroids, organophosphates, phenoxyacetic acids, carbamates, organochlorines and pesticide mixtures. None of the studies involved acute exposure events such as chemical accidents. There were 20 studies evaluating semen quality, of which 13 studies reported an association between exposure and semen quality; 6 studies evaluating DNA damage, of which 3 reported an association with exposure; and 6 studies assessing sperm aneuploidy or diploidy, of which 4 reported an association with exposure. Studies varied widely in methods, exposures and outcomes. Although suggestive for semen parameters, the epidemiologic evidence accumulated thus far remains equivocal as to the spermatotoxic and aneugenic potential of pesticides given the small number of published studies. This question warrants more investigation and suggestions for future studies are outlined.

Key words: semen quality / chromosomes / DNA damage / environmental health / occupational health


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