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Updated: Sep 18, 2025
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Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model
Published on: September 7, 2013
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Sexual dimorphism in the development and function of the melanocortin system
Marc Claret1,2,3, Roberta Haddad-Tóvolli4
1Neuronal Control of Metabolism (NeuCoMe) Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.
Reviews in Endocrine & Metabolic Disorders
|June 24, 2025
Summary
Sex differences in the melanocortin system impact energy balance and metabolism. Understanding these variations is key for developing targeted therapies for obesity and metabolic disorders.
Area of Science:
- Neuroendocrinology
- Metabolic Regulation
- Sex Differences in Physiology
Background:
- The melanocortin system, involving pro-opiomelanocortin (POMC) and agouti-related peptide (AgRP) neurons, is crucial for energy homeostasis.
- Significant anatomical and functional sex differences exist within this system, affecting metabolic adaptations.
- These differences are influenced by sex hormones, genetics, environment, and neurocircuitry.
Purpose of the Study:
- To review current knowledge on sex differences in the melanocortin system's development and function.
- To explore how these differences contribute to sex-dimorphic control of metabolism.
- To highlight the importance of considering sex as a variable in metabolic research and clinical practice.
Main Methods:
- Literature review of studies investigating the melanocortin system and sex differences.
- Analysis of research on neurocircuitry, hormonal influences, and genetic/environmental factors.
- Synthesis of findings related to metabolic adaptations, appetite, and energy expenditure.
Main Results:
- The melanocortin system exhibits distinct male and female regulatory mechanisms.
- These sex-specific pathways influence appetite, energy expenditure, and susceptibility to metabolic disorders.
- Sex differences are shaped by hormonal milieu, genetics, and neural organization.
Conclusions:
- Sex differences in the melanocortin system are critical for understanding sex-dimorphic metabolism.
- Incorporating sex as a variable is essential for advancing metabolic research and clinical studies.
- Elucidating these mechanisms can lead to more precise therapeutic strategies for metabolic disorders and obesity.
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