Glukokortikoide

Glukokortikoide, commonly known as glucocorticoids, are a class of steroid hormones produced in the adrenal cortex of vertebrates. They are essential for a variety of physiological processes, including metabolism, immune response, and stress adaptation. The primary endogenous glucocorticoid in humans is cortisol.

Glucocorticoids exert their effects by binding to specific intracellular receptors, which then translocate to the cell nucleus and regulate gene expression. This mechanism underlies their diverse actions. In terms of metabolism, they promote gluconeogenesis, the synthesis of glucose from non-carbohydrate sources, and increase blood glucose levels. They also influence protein and lipid metabolism.

In the immune system, glucocorticoids are potent immunosuppressants and anti-inflammatory agents. They inhibit the production of various inflammatory mediators and cytokines, reduce the proliferation of lymphocytes, and suppress the activity of immune cells. This property makes them valuable in the treatment of inflammatory and autoimmune diseases.

Exogenous glucocorticoids, synthetic analogs of cortisol, are widely used therapeutically. They are prescribed for conditions such as asthma, rheumatoid arthritis, inflammatory bowel disease, and certain types of cancer. However, their use is associated with a range of side effects, particularly with long-term or high-dose administration, including osteoporosis, weight gain, increased susceptibility to infections, and mood disturbances. The dose and duration of treatment are carefully managed to balance therapeutic benefits with potential risks.