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Neuropeptidergic systems in psychiatric disorders.

Sadat Hodzic1, Therese Riedemann2,3

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Neuropeptides modulate cognitive functions in the prefrontal cortex (PFC). This review explores their cellular actions, PFC-dependent behaviors, and potential therapeutic uses for neuropsychiatric disorders.

Keywords:
depressionneuropeptide Yneuropeptidesorexinoxytocinprefrontal cortexsomatostatinvasoactive intestinal peptide

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Behavioral Science

Background:

  • Neuropeptides are signaling molecules initially found in the hypothalamus, with release influenced by circadian rhythms and stress.
  • Their expression and function extend throughout the brain, including high levels in the prefrontal cortex (PFC).
  • Understanding neuropeptide actions in the PFC is crucial for cognitive processes and executive functions.

Purpose of the Study:

  • To bridge the gap between cellular neuropeptide actions and their relevance to PFC-dependent behavior.
  • To summarize the function of the PFC and highlight neuropeptide effects on cortical processing.
  • To review potential therapeutic applications of neuropeptides in PFC-related neuropsychiatric disorders.

Main Methods:

  • Literature review focusing on neuropeptide function in the prefrontal cortex.
  • Synthesis of data on cellular and network actions of neuropeptides.
  • Comparison of neuropeptide actions in rodent and human brains.

Main Results:

  • Neuropeptides and their receptors are highly expressed in the PFC, suggesting a role in executive functions.
  • Existing data on cellular neuropeptide actions are often from non-cortical cells, limiting understanding of PFC relevance.
  • Neuropeptides significantly influence cortical processing and PFC-dependent behaviors.

Conclusions:

  • Neuropeptides are key modulators of prefrontal cortex function and behavior.
  • Further research is needed to understand their specific roles in cognitive processes and mood disorders.
  • Neuropeptides hold therapeutic potential for neuropsychiatric conditions linked to PFC dysfunction.