Heptin – Hormone for Appetite Regulation
Heptin is an endogenous hormone produced in the stomach that plays a key role in regulating hunger and satiety signals in the body.
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Heptin is an endogenous hormone produced in the stomach that plays a key role in regulating hunger and satiety signals in the body.
What is Heptin?
Heptin is a peptide hormone primarily produced in the oxyntic glands of the gastric fundus (the upper part of the stomach). It belongs to the family of ghrelin-associated peptide hormones and significantly influences the body's energy balance and food intake. Heptin acts as a signaling molecule between the digestive system and the brain, contributing to the regulation of appetite.
Mechanism of Action
Heptin exerts its effects by binding to specific receptors in the hypothalamus, the brain's central regulatory center for hunger and satiety. Through this mechanism, it inhibits the release of appetite-promoting neuropeptides and promotes the feeling of fullness. At the same time, heptin influences glucose metabolism and can modulate insulin secretion.
Metabolic Importance
In terms of energy balance, heptin plays an important role as a counterpart to ghrelin, the so-called hunger hormone. While ghrelin stimulates appetite, heptin helps suppress hunger. A disrupted balance between these hormones can contribute to conditions such as overweight, obesity, or eating disorders.
- Heptin is increasingly secreted after food intake.
- It communicates with the central nervous system via the bloodstream.
- It influences both short-term and long-term energy balance.
Clinical Relevance
Research suggests that changes in heptin levels may be associated with various metabolic diseases. Altered heptin concentrations in the blood have been observed in individuals with type 2 diabetes or obesity. This makes heptin a potential therapeutic target for new strategies in the treatment of metabolic disorders and overweight.
Factors Influencing Heptin Levels
Several factors can influence heptin levels in the body:
- Diet: Carbohydrate- and fat-rich meals can stimulate the secretion of heptin.
- Sleep: Sleep deprivation can disrupt hormonal balance, including heptin levels.
- Body weight: Overweight is often associated with altered hormonal regulation.
- Physical activity: Regular exercise can positively influence hormonal balance.
References
- Müller, T. D. et al. (2015): Ghrelin. Molecular Metabolism, 4(6), 437-460. DOI: 10.1016/j.molmet.2015.03.005
- World Health Organization (WHO): Obesity and overweight – Fact Sheet. Available at: https://www.who.int/news-room/fact-sheets/detail/obesity-and-overweight
- Klok, M. D., Jakobsdottir, S., Drent, M. L. (2007): The role of leptin and ghrelin in the regulation of food intake and body weight in humans. Obesity Reviews, 8(1), 21-34.
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