title: New, potent, selective, and short-acting peptidic V1a receptor agonists.
abstract: [Arg(8)]vasopressin (AVP) produces vasoconstriction via V(1a) receptor (V(1a)R)-mediated vascular smooth muscle cell contraction and is being used to increase blood pressure in septic shock, a form of vasodilatory hypotension. However, AVP also induces V(2) receptor (V(2)R)-mediated antidiuresis, vasodilation, and coagulation factor release, all deleterious in septic shock. The V(1a)R agonist terlipressin (H-Gly(3)[Lys(8)]VP) also lacks selectivity vs the V(2)R and has sizably longer duration of action than AVP, preventing rapid titration of its vasopressor effect in the clinic. We designed and synthesized new short acting V(1a)R selective analogues of general structure [Xaa(2),Ile(3),Yaa(4),Zaa(8)]VP. The most potent and selective compounds in in vitro functional assays (e.g., [Phe(2),Ile(3),Asn(Me(2))(4),Orn(8)]VP (31), [Phe(2),Ile(3),Asn((CH(2))(3)OH)(4),Orn(8)]VP (34), [Phe(2),Ile(3),Hgn(4),Orn(iPr)(8)]VP (45), [Phe(2),Ile(3),Asn(Et)(4),Dab(8)]VP (49), [Thi(2),Ile(3),Orn(iPr)(8)]VP (59), [Cha(2),Ile(3),Asn(4),Orn(iPr)(8)]VP (68)) were tested by intravenous bolus in rats for duration of vasopressive action. Analogues 31, 34, 45, and 49 were as short-acting as AVP. Compound 45, FE 202158, is currently undergoing clinical trials in septic shock.
authors.affiliation: Ferring Research Institute Inc., San Diego, California 92121, United States. Kazimierz.Wisniewski@ferring.com
authors.forename: Kazimierz
authors.initials: K
authors.lastname: Wisniewski
authors.forename: Robert
authors.initials: R
authors.lastname: Galyean
authors.forename: Hiroe
authors.initials: H
authors.lastname: Tariga
authors.forename: Sudarkodi
authors.initials: S
authors.lastname: Alagarsamy
authors.forename: Glenn
authors.initials: G
authors.lastname: Croston
authors.forename: Joshua
authors.initials: J
authors.lastname: Heitzmann
authors.forename: Arash
authors.initials: A
authors.lastname: Kohan
authors.forename: Halina
authors.initials: H
authors.lastname: Wisniewska
authors.forename: Régent
authors.initials: R
authors.lastname: Laporte
authors.forename: Pierre J-M
authors.initials: PJ
authors.lastname: Rivière
authors.forename: Claudio D
authors.initials: CD
authors.lastname: Schteingart
mesh_terms: D000818:Animals; D001794:Blood Pressure / Q000187:drug effects; D057809:HEK293 Cells; D006801:Humans; D008297:Male; D009842:Oligopeptides / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D051381:Rats; D017208:Rats, Wistar; D017483:Receptors, Vasopressin / Q000819:agonists*; D013329:Structure-Activity Relationship; D014667:Vasopressins / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology
chemical_list: D009842:Oligopeptides; D017483:Receptors, Vasopressin; C559490:vasopressin, Phe(2)-Ile(3)-Hgn(4)-Orn(iPr)(8)-; D014667:Vasopressins