Hum. Reprod. Advance Access originally published online on October 27, 2006
Human Reproduction 2007 22(2):346-355; doi:10.1093/humrep/del380
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Smoke from traditional commercial, harm reduction and research brand cigarettes impairs oviductal functioning in hamsters (Mesocricetus auratus) in vitro
1 Graduate Program in Environmental Toxicology and 2 Department of Cell Biology and Neuroscience, University of California Riverside, Riverside, CA, USA
3 To whom correspondence should be addressed at: Department of Cell Biology and Neuroscience, University of California Riverside, Riverside, CA 92521, USA. E-mail: talbot{at}ucr.edu
BACKGROUND: Cigarette smoke from 2R1 research brand cigarettes and specific toxicants in smoke inhibit oviductal functioning. Our purpose was to test the hypothesis that smoke from commercial cigarettes, including harm reduction cigarettes, inhibits oviductal functioning and to measure the concentration of previously identified toxicants in smoke from research and commercial cigarettes. METHODS: Mainstream (MS) and sidestream (SS) smoke solutions from two research, six traditional commercial and three harm reduction brands were tested in vitro using an oviductal assay that measures ciliary beat frequency, oocyte retrieval rate and smooth muscle contraction. RESULTS: Generally, smoke from each brand of cigarette was inhibitory in the three oviductal bioassays. SS, the major component of environmental tobacco smoke, was usually more inhibitory than MS, the smoke inhaled by active smokers. Nine cigarette toxicants, previously shown to be highly inhibitory in the oviductal bioassays, were quantified in MS and SS. 4-Methylpyridine, which was inhibitory by itself in picomolar doses, was present in the highest concentration in MS and SS solutions from all brands tested. In general, toxicant concentrations were higher in SS than in MS solutions. CONCLUSIONS: These data show that commercial brands of cigarettes, including harm reduction cigarettes, contain toxicants that inhibit biological processes in the oviduct and could affect reproductive outcomes.
Key words: oviduct/cigarette smoke/cilia/oocyte/smooth muscle contraction
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