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Development and expression of hormonal systems regulating aggression

N G Simon1, S E McKenna, S F Lu

  • 1Department of Biological Sciences, Lehigh University, Bethlehem, Pennsylvania 18015, USA.

Annals of the New York Academy of Sciences
|September 20, 1996
PubMed
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Testosterone (T) influences male aggression through various pathways, with genetics dictating the specific route. Steroid receptors, like androgen receptor (AR) and estrogen receptor (ER), are crucial for how tissues respond to T and its metabolites.

Area of Science:

  • Neuroendocrinology
  • Behavioral Neuroscience
  • Genetics

Background:

  • Male-typical aggression is regulated by testosterone (T) through complex pathways influenced by an individual's genotype.
  • Steroid receptors play a critical role in determining target tissue sensitivity to the aggression-promoting effects of T and its metabolites.

Purpose of the Study:

  • To elucidate the cellular mechanisms underlying testosterone's regulation of male aggression.
  • To highlight the importance of steroid receptor function, including androgen receptor (AR) and estrogen receptor (ER), in mediating T's effects.

Main Methods:

  • The study focuses on the roles of androgen receptor (AR) density and estrogen receptor (ER) interactions.
  • It emphasizes the need to understand the contribution of ER's activating functions in cellular responsiveness.

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Main Results:

  • Relative androgen receptor (AR) density appears to be a significant factor in the biobehavioral impact of androgens.
  • Further characterization of estrogen receptor (ER) interactions and its activating functions is necessary to fully understand estrogenic metabolite effects on aggression.

Conclusions:

  • Understanding the relationship between T and aggression requires integrating cellular mechanisms of steroid hormone action, including metabolism, receptor function, and gene regulation.
  • Genotype-dependent pathways and the specific roles of AR and ER are critical for mediating testosterone's influence on male aggression.