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Parathyroid hormone (parathormonum) is a hormone produced by the parathyroid glands. It regulates calcium levels in the blood by stimulating the release of calcium from the bones and also by increasing the reabsorption of calcium in the renal tubules.

Basic facts about parathyroid hormone:

1. Secreted by cells of the parathyroid glands.

2. Increases the concentration of calcium in the blood, stimulating osteoclasts to resorption of bone tissue and increasing the reabsorption of calcium in the kidneys.

3. Reduces the concentration of phosphates in the blood by inhibiting the reabsorption of phosphates in the renal tubules.

4. An increase in parathyroid hormone levels leads to the development of primary hyperparathyroidism.

5. Decreased secretion of parathyroid hormone causes hypoparathyroidism.

6. Plays a key role in maintaining calcium homeostasis in the body.

Thus, parathyroid hormone is an important hormone of the parathyroid glands, regulating the exchange of calcium and phosphorus in the body.

Parathyroid hormone (Parathormone, PTH) is a hormone of the parathyroid glands that regulates the metabolism of calcium and phosphorus in the body. It controls the absorption of ionized calcium from the intestine, bone metabolism, maintaining acid-base balance, and increases the excretion of phosphorus by the kidneys. In other words, it is a substance produced by the cells of the parathyroid gland in response to a lack of calcium ions in the blood. Its main function is to maintain a certain level of calcium and phosphate in the blood serum by regulating the level of calcium intake and phosphate excretion from the body.

Parathyroid hormone plays a key role in regulating and maintaining healthy homeostasis (maintaining a constant internal environment of the body), especially with regard to the metabolism of calcium, phosphorus and other electrolytes and their absorption by the body. Food is the main source of calcium and phosphorus for the body, but they are not always easily absorbed; in particular, chronic malnutrition or deficiency of certain nutrients can lead to calcium deficiency. In addition, some medications, such as diuretics or corticosteroids, can reduce the amount of parathyroid hormone. However, these hormones may increase in parathyroid cancer, parathyroid adenoma hyperplasia, and some endocrine diseases. Clinical symptoms of parathrone deficiency may include hypocalcemia, hypophosphatemia, and increased bone resorption. In patients with normal parathyroid gland function or with reduced secretion of parathyroid hyperoxide, secondary disorders of calcium metabolism may develop. Control of parahypoxide and aminotein levels is necessary to optimize calcium intake in the body. Calcium ions are usually removed from the blood to other parts of the body while the body does not have access to food. The absorption of calcium ions depends on the amount of food consumed and the condition