Photoperiod reverses the effects of estrogens on male aggression via genomic and nongenomic pathways.

@article{Trainor2007PhotoperiodRT,
  title={Photoperiod reverses the effects of estrogens on male aggression via genomic and nongenomic pathways.},
  author={Brian C. Trainor and Shili Lin and M. Sima Finy and Michael R. Rowland and Randy J Nelson},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2007},
  volume={104 23},
  pages={9840-5}
}
Despite recent discoveries of the specific contributions of genes to behavior, the molecular mechanisms mediating contributions of the environment are understudied. We demonstrate that the behavioral effects of estrogens on aggression are completely reversed by a discrete environmental signal, day length. Selective activation of either estrogen receptor alpha or beta decreases aggression in long days and increases aggression in short days. In the bed nucleus of the stria terminalis, one of… CONTINUE READING

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