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Updated: May 2, 2026

Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model
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Synaptic changes induced by melanocortin signalling.

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    The melanocortin 4 receptor influences energy balance, memory, mood, and addiction. Targeting this receptor offers therapeutic potential for various neurological and psychiatric conditions.

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    Area of Science:

    • Neuroscience
    • Endocrinology
    • Pharmacology

    Background:

    • The melanocortin system regulates energy homeostasis.
    • Emerging evidence links it to memory, pain, mood, and addiction.

    Purpose of the Study:

    • To review the role of the melanocortin 4 receptor (MC4R).
    • To integrate molecular mechanisms of MC4R in synaptic plasticity.
    • To highlight therapeutic potential in neurological and psychiatric disorders.

    Main Methods:

    • Literature review of studies on the melanocortin system and MC4R.
    • Analysis of molecular pathways involved in synaptic plasticity.
    • Synthesis of evidence linking MC4R to various physiological functions.

    Main Results:

    • MC4R plays a crucial role beyond energy homeostasis.
    • Molecular mechanisms involve changes in synaptic plasticity.
    • MC4R is implicated in chronic pain, memory deficits, depression, and drug abuse.

    Conclusions:

    • MC4R is a key regulator in diverse physiological systems.
    • Targeting MC4R offers promising therapeutic strategies.
    • Further research can elucidate MC4R's full potential in treating complex disorders.