Neuronal subset-specific Pten-deficient mice do not exhibit deficits in sensorimotor gating processes

Area of Science:

• Neuroscience
• Genetics
• Behavioral Science

Background:

• Sensorimotor gating deficits are observed in autism spectrum disorder (ASD) and its animal models.
• The neuronal subset-specific (NS)-Pten knockout (KO) mouse model of ASD exhibits PI3K/AKT/mTOR pathway hyperactivity.
• The relationship between this pathway hyperactivity and sensorimotor gating deficits remains unexplored in this model.

Purpose of the Study:

• To investigate sensorimotor gating in the NS-Pten KO mouse model.
• To determine if PI3K/AKT/mTOR pathway hyperactivity is associated with sensorimotor gating deficits in this ASD model.

Main Methods:

• A three-day paradigm was used to assess sensorimotor gating in NS-Pten KO and wildtype (WT) mice.
• Habituation to a startle stimulus was measured on day 1.
• Prepulse inhibition (PPI) of the startle reflex was assessed on day 2 using varying decibel levels for prepulse stimuli.
• The startle response was measured on day 3.

Main Results:

• No significant differences in habituation were observed between NS-Pten KO and WT mice (p > 0.05).
• No significant differences in prepulse inhibition percentages were found at 2, 7, or 12 dB between the groups (p > 0.05).
• Startle response magnitudes were also comparable between NS-Pten KO and WT mice (p > 0.05).

Conclusions:

• The NS-Pten KO mouse model does not exhibit significant deficits in sensorimotor gating.
• These findings suggest that PI3K/AKT/mTOR hyperactivation in this model is not directly linked to sensorimotor gating impairments.
• This study contributes to understanding the complex relationship between specific signaling pathways and sensory processing in ASD.