SOURCE: Medical News Today
DATE: January 26, 2015
EXCERPT: "When cells are missing, both males and females are slower to fight.
A miniscule cluster of estrogen-producing nerve cells in the mouse brain exerts highly specific effects on aggressive behavior in both males and females, according to new research by UC San Francisco scientists.
The cells in question, known as aromatase-expressing (aromatase+) cells, represent less than five one-hundredths of a percent of the neurons in the mouse brain, but they play crucial roles in sexual differentiation during early development and in regulating sexual and social behavior in adulthood.
Though estrogen is generally thought of as a female sex hormone, during the 1970s it was discovered that the male sex hormone testosterone can be converted to estrogen in the brain by aromatase, an enzyme also found in many other mouse and human tissues." more
RELATED PUBMED LINK:
Unger EK, Burke KJ Jr, Yang CF, Bender KJ, Fuller PM, Shah NM. Medial Amygdalar Aromatase Neurons Regulate Aggression in Both Sexes. Cell Rep. 2015 Jan 21. pii: S2211-1247(14)01093-6.