Commonly used to stop bleeding of varices in the food pipe (oesophagus).
Terlipressin is a medicine similar to a naturally occurring hormone present in the body, known as antidiuretic hormone (ADH) or vasopressin. ADH has two main effects in the body. Firstly, it causes narrowing of blood vessels (vasoconstriction), thereby limiting blood flow to a particular area of the body. It also acts on receptors in the kidney to retain water in the body, which helps to prevent excessive loss of water in the urine.
Mode of Action:
Terlipressin, an analogue of vasopressin, acts on three different receptors, vasopressin receptor V1a (which initiates vasoconstriction, liver gluconeogenesis, platelet aggregation and release of factor VIII), vasopressin receptor V1b (which mediates corticotrophin secretion from the pituitary) and vasopressin receptor V2 which controls free water reabsorption in the renal medullar. The binding of terlipressin to the V2 receptor activates adenylate cyclase which causes the release of aquaporin 2 channels into the cells lining the renal medullar duct. This allows water to be reabsorbed down an osmotic gradient so the urine is more concentrated.
Pesaturo AB, Jennings HR, Voils SA: Terlipressin: vasopressin analog and novel drug for septic shock. Ann Pharmacother. 2006 Dec;40(12):2170-7. Epub 2006 Dec 5. Pubmed Klein M, Weksler N, Borer A, Koyfman L, Kesslin J, Gurman GM: Terlipressin facilitates transport of septic patients treated with norepinephrine. Isr Med Assoc J. 2006 Oct;8(10):691-3. Pubmed Leone M, Charvet A, Delmas A, Albanese J, Martin C, Boyle WA: Terlipressin: a new therapeutic for calcium-channel blockers overdose. J Crit Care. 2005 Mar;20(1):114-5. Pubmed Matok I, Vard A, Efrati O, Rubinshtein M, Vishne T, Leibovitch L, Adam M, Barzilay Z, Paret G: Terlipressin as rescue therapy for intractable hypotension due to septic shock in children. Shock. 2005 Apr;23(4):305-10. Pubmed Kam PC, Williams S, Yoong FF: Vasopressin and terlipressin: pharmacology and its clinical relevance. Anaesthesia. 2004 Oct;59(10):993-1001. Pubmed
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