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    Developmental programming of obesity by maternal exposure to concentrated ambient PM2.5 is maternally transmitted into the third generation in a mouse model

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    Author
    Xu, Y.
    Wang, W.
    Chen, M.
    Date
    2019
    Journal
    Particle and Fibre Toxicology
    Publisher
    BioMed Central Ltd.
    Type
    Article
    
    Metadata
    Show full item record
    See at
    https://doi.org/10.1186/s12989-019-0312-6
    Abstract
    Background: Obesity is an uncontrolled global epidemic and one of the leading global public health challenges. Maternal exposure to ambient fine particulate matter (PM2.5) may adversely program offspring's adiposity, suggesting a specialized role of PM2.5 pollution in the global obesity epidemic. However, the vulnerable window for this adverse programming and how it is cross-generationally transmitted have not been determined. Therefore, in the present study, female C57Bl/6 J mice were exposed to filtered air (FA) or concentrated ambient PM2.5 (CAP) during different periods, and the development and adulthood adiposity of their four-generational offspring were assessed. Results: Our data show that the pre-conceptional but not gestational exposure to CAP was sufficient to cause male but not female offspring's low birth weight, accelerated postnatal weight gain, and increased adulthood adiposity. These adverse developmental traits were transmitted into the F2 offspring born by the female but not male F1 offspring of CAP-exposed dams. In contrast, no adverse development was noted in the F3 offspring. Conclusions: The present study identified a pre-conceptional window for the adverse programming of adiposity by maternal exposure to PM2.5, and showed that it was maternally transmitted into the third generation. These data not only call special attention to the protection of women from exposure to PM2.5, but also may facilitate the development of intervention to prevent this adverse programming. Copyright 2019 The Author(s).
    Sponsors
    This work was supported by the National Institutes of Health (R01ES024516 to ZY), the American Heart Association (13SDG17070131 to ZY), the National Natural Science Foundation of China (Grant No. 81270342 to YX, 91643205 to HK and 81500216 to MC) and Shanghai Pujiang Program (17PJ1401300 to YX).
    Keyword
    Cross-generational transmission
    Developmental programming
    Maternal exposure
    Obesity
    PM2.5
    Identifier to cite or link to this item
    https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068534862&doi=10.1186%2fs12989-019-0312-6&partnerID=40&md5=e2a09e68c72954079b341c90d1210486; http://hdl.handle.net/10713/10602
    ae974a485f413a2113503eed53cd6c53
    10.1186/s12989-019-0312-6
    Scopus Count
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    UMB Open Access Articles 2019

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