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[1-(beta-mercapto-beta,beta-cyclopentamethylenepropionic acid),4-valine,-8-D-arginine]vasopressin, a potent and selective inhibitor of the vasopressor response to arginine-vasopressin. 1978

J Lowbridge, and M Manning, and J Haldar, and W H Sawyer

As part of a program in which we are attempting the design and synthesis of an antagonist of the antidiuretic response to arginine-vasopressin (AVP) [1-(beta-mercapto-beta,beta-cyclopentamethylenepropionic acid),4-valine,8-D-arginine]vasopressin [d(CH2)5VDAVP] was synthesized and assayed for antidiuretic, vasopressor, and oxytocic activities. The required protected intermediate was synthesized by a combination of solid-phase synthesis and an [8 + 1] coupling in solution. d(CH2)5VDAVP has an antidiuretic potency of 0.10 +/- 0.02 unit/mg, less than 1/10000 that of its parent [deamino,4-valine,8-D-arginine]vasopressin (dVDAVP). d(CH2)5VDAVP is a specific antagonist of the vasopressor responses to AVP. It has an antivasopressor pA2 value of 7.68 +/- 0.05 when tested against AVP. It is also an antagonist of the in vitro oxytocic response to oxytocin (pA2 value = 6.62 +/- 0.07). With its negligible antidiuretic activity, absence of oxytocic activity, and its potent and specific ability to antagonize the vasopressor effects of AVP, d(CH2)5VDAVP is one of the most potent and selective vasopressor antagonists reported to date. It should thus be a useful tool with which to probe the possible role(s) that AVP may play in cardiovascular regulation under normal and pathological conditions.

UI MeSH Term Description Entries
D010121 Oxytocin A nonapeptide hormone released from the neurohypophysis (PITUITARY GLAND, POSTERIOR). It differs from VASOPRESSIN by two amino acids at residues 3 and 8. Oxytocin acts on SMOOTH MUSCLE CELLS, such as causing UTERINE CONTRACTIONS and MILK EJECTION. Ocytocin,Pitocin,Syntocinon
D002621 Chemistry A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001127 Arginine Vasopressin The predominant form of mammalian antidiuretic hormone. It is a nonapeptide containing an ARGININE at residue 8 and two disulfide-linked cysteines at residues of 1 and 6. Arg-vasopressin is used to treat DIABETES INSIPIDUS or to improve vasomotor tone and BLOOD PRESSURE. Argipressin,Vasopressin, Arginine,Arg-Vasopressin,Argipressin Tannate,Arg Vasopressin
D014667 Vasopressins Antidiuretic hormones released by the NEUROHYPOPHYSIS of all vertebrates (structure varies with species) to regulate water balance and OSMOLARITY. In general, vasopressin is a nonapeptide consisting of a six-amino-acid ring with a cysteine 1 to cysteine 6 disulfide bridge or an octapeptide containing a CYSTINE. All mammals have arginine vasopressin except the pig with a lysine at position 8. Vasopressin, a vasoconstrictor, acts on the KIDNEY COLLECTING DUCTS to increase water reabsorption, increase blood volume and blood pressure. Antidiuretic Hormone,Antidiuretic Hormones,beta-Hypophamine,Pitressin,Vasopressin,Vasopressin (USP),Hormone, Antidiuretic,beta Hypophamine
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus
D055598 Chemical Phenomena The composition, structure, conformation, and properties of atoms and molecules, and their reaction and interaction processes. Chemical Concepts,Chemical Processes,Physical Chemistry Concepts,Physical Chemistry Processes,Physicochemical Concepts,Physicochemical Phenomena,Physicochemical Processes,Chemical Phenomenon,Chemical Process,Physical Chemistry Phenomena,Physical Chemistry Process,Physicochemical Phenomenon,Physicochemical Process,Chemical Concept,Chemistry Process, Physical,Chemistry Processes, Physical,Concept, Chemical,Concept, Physical Chemistry,Concept, Physicochemical,Concepts, Chemical,Concepts, Physical Chemistry,Concepts, Physicochemical,Phenomena, Chemical,Phenomena, Physical Chemistry,Phenomena, Physicochemical,Phenomenon, Chemical,Phenomenon, Physicochemical,Physical Chemistry Concept,Physicochemical Concept,Process, Chemical,Process, Physical Chemistry,Process, Physicochemical,Processes, Chemical,Processes, Physical Chemistry,Processes, Physicochemical
D066298 In Vitro Techniques Methods to study reactions or processes taking place in an artificial environment outside the living organism. In Vitro Test,In Vitro Testing,In Vitro Tests,In Vitro as Topic,In Vitro,In Vitro Technique,In Vitro Testings,Technique, In Vitro,Techniques, In Vitro,Test, In Vitro,Testing, In Vitro,Testings, In Vitro,Tests, In Vitro,Vitro Testing, In

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