From Balance to Breakdown: striatal PV interneurons in Huntington's disease and Autism Spectrum Disorder

Area of Science:

• Neuroscience
• Cellular Biology
• Neurobiology

Background:

• Parvalbumin-expressing (PV) interneurons were historically considered minor components of striatal circuitry.
• These interneurons are now recognized as critical regulators of striatal output, essential for motor and cognitive functions.
• They synchronize neural activity and maintain the balance between excitation and inhibition within the striatum.

Purpose of the Study:

• To review recent advancements in understanding the development, molecular characteristics, and physiological properties of striatal PV interneurons.
• To explore the established roles of PV interneurons in normal striatal function.
• To examine the involvement of PV interneurons in the pathophysiology of Huntington's disease and Autism Spectrum Disorder.

Main Methods:

• This is a review article, synthesizing existing research.
• Literature search and analysis of studies on PV interneuron development, physiology, and function.
• Examination of evidence linking PV interneuron alterations to neurodegenerative and psychiatric conditions.

Main Results:

• Striatal PV interneurons are key gatekeepers, synchronizing activity and balancing neural excitation and inhibition.
• Their development, molecular identity, and physiological properties are increasingly understood.
• Alterations in PV interneurons are implicated in Huntington's disease and Autism Spectrum Disorder.

Conclusions:

• PV interneurons are central to striatal function and are implicated in neurological and psychiatric diseases.
• Understanding these interneurons offers insights into the mechanisms underlying Huntington's disease and Autism Spectrum Disorder.
• PV interneurons represent a critical intersection for neurodegenerative and psychiatric research.