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Vasopressin regulates the tonicity of body fluids. It is released from the posterior pituitary in response to hypertonicity and causes the kidneys to reabsorb solute-free water and return it to the circulation from the tubules of the nephron, thus returning the tonicity of the body fluids toward normal.
The functions of vasopressin make it useful for a variety of important medical applications. Since it plays a role in the regulation of many physiological functions, like regulation of water and sodium excretion, blood volume, vasoconstriction , and response to stress , vasopressin can be helpful in the treatment of conditions related to these ...
The actions of vasopressin are mediated by stimulation of tissue-specific G protein-coupled receptors (GPCRs) called vasopressin receptors that are classified into the V 1 (V 1A), V 2, and V 3 (V 1B) receptor subtypes. [1] These three subtypes differ in localization, function and signal transduction mechanisms. [2]
It is a synthetic analogue of vasopressin, the hormone that plays roles in the control of the body's osmotic balance, blood pressure regulation, kidney function, [2] and reduction of urine production. [1] Desmopressin was approved for medical use in the United States in 1978. [1] It is on the World Health Organization's List of Essential ...
They control spermatogenesis and the ovarian cycle, parturition, lactation, and maternal behaviour [citation needed]. They control the body's response to stress [8] and infection. [9] They regulate the body's metabolism, influencing eating and drinking behaviour, and influence how energy intake is utilised, that is, how fat is metabolised. [10]
Parvocellular vasopressin cells, which project to many points in the hypothalamus and limbic system, as well as to the brainstem and spinal cord (these are involved in blood pressure and temperature regulation), and brown fat thermogenesis. Parvocellular CRH neurons, which are thought to be involved in stress-related behaviors.
Vasopressin infusions are in use for septic shock patients not responding to fluid resuscitation or infusions of catecholamines (e.g., dopamine or norepinephrine) to increase the blood pressure while sparing the use of catecholamines. These argipressins have much shorter elimination half-life (around 20 minutes) than synthetic non-arginine ...
Vasopressin receptor 1A (V1AR), or arginine vasopressin receptor 1A (officially called AVPR1A) is one of the three major receptor types for vasopressin (AVPR1B and AVPR2 being the others), and is present throughout the brain, as well as in the periphery in the liver, kidney, and vasculature. [5] AVPR1A is also known as: V1a vasopressin receptor