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Updated: Jun 3, 2026

Assessment of Sexual Behavior of Male Mice
04:38

Assessment of Sexual Behavior of Male Mice

Published on: March 5, 2020

Rapid activation of phosphorylated mitogen-activated protein kinase after sexual stimulation in male mice

Mélanie Taziaux1, Matthieu Keller, Jacques Balthazart

  • 1Research Group in Behavioral Neuroendocrinology, Netherlands Institute for Neuroscience, Amsterdam, The Netherlands. m.taziaux@nin.knaw.nl

Neuroreport
|April 1, 2011
PubMed

Insights

Mitogen-activated protein kinase (MAPK) phosphorylation rapidly increased in male mouse brains upon exposure to female cues or during mating. This neural activation marker is useful for studying short-term behavioral responses.

Area of Science:

  • Neuroscience
  • Behavioral Neuroscience
  • Molecular Biology

Background:

  • The mitogen-activated protein kinase (MAPK) pathway is crucial for cellular signaling.
  • Understanding neural activation patterns during specific behaviors is key to deciphering brain function.

Purpose of the Study:

  • To investigate the rapid induction of MAPK phosphorylation in the male mouse brain in response to olfactory and behavioral cues from females.
  • To identify brain regions involved in processing these cues and controlling copulatory behavior.

Main Methods:

  • Immunoreactivity mapping of phosphorylated MAPK (pMAPK, also known as ERK1/2) in male mouse brains.
  • Exposure to female olfactory cues (soiled bedding) and observation of male copulatory behaviors.

Main Results:

  • Rapid MAPK phosphorylation (within 10 minutes) was observed in olfactory processing regions (main and accessory olfactory bulbs, amygdala, medial preoptic area).
  • Similar rapid MAPK phosphorylation occurred in brain regions controlling copulatory behavior (amygdala, medial preoptic area).

Conclusions:

  • MAPK phosphorylation serves as a sensitive marker for short-term neural activation.
  • This marker can be utilized to study the immediate neural correlates of specific behaviors, including those related to reproduction.

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