Back

Multi- and transgenerational disruption of maternal behavior and female puberty by Endocrine Disrupting Chemical (EDC) mixture exposure

Lopez Rodriguez, D.; Aylwin, C. F.; Delli, V.; Sevrin, E.; Campanile, M.; Martin, M.; Franssen, D.; Gerard, A.; Blacher, S.; Tirelli, E.; Noel, A.; Lomniczi, A.; Parent, A.-S.

2020-06-29 neuroscience
10.1101/2020.06.26.172965 bioRxiv
Show abstract

Female reproductive development and maternal behavior are two intertwined phenotypes centrally controlled by the hypothalamus. Endocrine disrupting chemicals (EDC) can alter these processes especially when animals are exposed during development. We propose the concept that developmental exposure to a low environmentally relevant dose of EDC mixture induces a transgenerational alteration of female rat pubertal timing and ovarian physiology throughout epigenetic reprograming of hypothalamic Kiss1, Esr1 and Oxt1 loci. Such exposure also caused a multigenerational reduction of maternal behavior induced by the loss in hypothalamic dopaminergic signaling. Our results identify the hypothalamic Polycomb Group of epigenetic repressors as actors of this mechanism of transgenerational reproductive disruption. Using a cross-fostering approach, we identified that while the reduction in maternal phenotype was normalized in EDC exposed pups raised by unexposed dams, no reversal of the pubertal phenotype was achieved, suggesting a germline transmission of the reproductive phenotype.

Matching journals

The top 7 journals account for 50% of the predicted probability mass.

50% of probability mass above

"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.