When a peptide hormone binds to its receptor on the surface of a target cell, it triggers a cascade of intracellular signalling events. This leads to the desired physiological response, such as the regulation of growth, development, metabolism, or reproduction. The pituitary gland is a primary source of many important peptide hormones, including growth hormone, thyroid-stimulating hormone, and adrenocorticotropic hormone. Peptide hormones circulate in the bloodstream and may also interact with other molecules in the plasma. Once they reach their target cells, they link with specific receptors on the cell surface. This interaction initiates a series of events within the cell, often involving DNA and vesicles, which ultimately results in the hormone’s effect. Understanding the unique properties and mechanisms of action of a peptide hormone is crucial for exploring their potential applications in various medical and performance-enhancing contexts. Peptide hormones play a vital role in maintaining homeostasis and regulating numerous biological processes within the body. - [Read More]