Somatostatinergic systems: an update on brain functions in normal and pathological aging

Area of Science:

• Neuroscience
• Endocrinology
• Pharmacology

Background:

• Somatostatin is a key peptide neurotransmitter widely distributed in the mammalian brain.
• It regulates critical functions including motor activity, sleep, sensory processing, and cognitive functions.
• Five distinct somatostatin receptors (sst1-5), all G-protein-coupled receptors, mediate its actions.

Purpose of the Study:

• To elucidate the precise roles of somatostatin systems, particularly long-range interneurons, in various brain functions.
• To investigate the involvement of somatostatinergic systems in the pathophysiology of brain diseases.
• To identify somatostatin system components as potential therapeutic targets for neurological and psychiatric disorders.

Main Methods:

• Review of recent scientific literature on somatostatin and its receptors.
• Analysis of studies investigating somatostatin system function in health and disease.
• Evaluation of emerging therapeutic strategies targeting the somatostatin system.

Main Results:

• Recent studies have significantly advanced the understanding of somatostatin's role in established brain functions.
• New insights reveal the specific contributions of long-range somatostatinergic interneurons.
• Alterations in somatostatinergic systems are increasingly linked to various brain pathologies.

Conclusions:

• The somatostatin system plays a complex and vital role in mammalian brain function.
• Dysregulation of this system is implicated in several brain diseases.
• Targeting the somatostatin system offers promising therapeutic avenues for treating brain disorders.