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Receptors for kinins in the human isolated umbilical vein.
Br J Pharmacol. 1996 May; 118(2):289-94.BJ

Abstract

1. The human umbilical vein has been found to contract in response to bradykinin (BK) and desArg9BK. 2. The rank order of potency of agonists, in the presence of the B1 receptor antagonist Lys[Leu8]desArg9BK, is as follows: [Hyp3, Tyr(Me)8]BK (pD2 8.88) = [Hyp3]BK (pD2 8.86) = LysBK (pD2 8.81) > or = BK (pD2 8.60) >> [Aib7]BK (pD2 6.38) >> desArg9BK and LysdesArg9BK (inactive). 3. Hoe 140 (pA2 8.42) inhibits the effects of BK while other B2 receptor peptide antagonists are very weak and WIN 64338 is practically inactive. 4. Venoconstrictor responses to desArg9BK of fresh tissues increase with time during the in vitro incubation and reach a maximum after 4-6 h. The activity of Hoe 140 (pA2 5.48) is negligible against B1 receptor agonists. 5. When measured in the presence of the selective B2 receptor antagonist Hoe 140 (400 nM), the order of potency of kinin related peptides on the B1 receptor is Lys[desArg9]BK (pD2 8.60) > desArg9BK (pD2 6.69). BK, LysBK, [Hyp3]BK and other B2 receptor agonists are inactive. 6. The B1 receptor antagonist, Lys[Leu8]desArg9BK (pA2 7.99), inhibits the response of the human vein to B1 receptor agonists (LysdesArg9BK or desArg9BK), but do not alter the effect of BK. 7. The results summarized in this paper indicate that the human isolated umbilical vein is a sensitive preparation containing both B1 and B2 receptors. The human B2 receptor shows some similarity with that of the rabbit (at least for agonist potencies) and differs from the B2 receptor of the guinea-pig. Compared to the rabbit B1 receptor, the human B1 receptor shows low sensitivity to peptides that lack the N-terminal Lys.

Authors+Show Affiliations

Department of Pharmacology, Medical School, Université de Sherbrooke, Québec, Canada.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

8735629

Citation

Gobeil, F, et al. "Receptors for Kinins in the Human Isolated Umbilical Vein." British Journal of Pharmacology, vol. 118, no. 2, 1996, pp. 289-94.
Gobeil F, Pheng LH, Badini I, et al. Receptors for kinins in the human isolated umbilical vein. Br J Pharmacol. 1996;118(2):289-94.
Gobeil, F., Pheng, L. H., Badini, I., Nguyen-Le, X. K., Pizard, A., Rizzi, A., Blouin, D., & Regoli, D. (1996). Receptors for kinins in the human isolated umbilical vein. British Journal of Pharmacology, 118(2), 289-94.
Gobeil F, et al. Receptors for Kinins in the Human Isolated Umbilical Vein. Br J Pharmacol. 1996;118(2):289-94. PubMed PMID: 8735629.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Receptors for kinins in the human isolated umbilical vein. AU - Gobeil,F, AU - Pheng,L H, AU - Badini,I, AU - Nguyen-Le,X K, AU - Pizard,A, AU - Rizzi,A, AU - Blouin,D, AU - Regoli,D, PY - 1996/5/1/pubmed PY - 1996/5/1/medline PY - 1996/5/1/entrez SP - 289 EP - 94 JF - British journal of pharmacology JO - Br J Pharmacol VL - 118 IS - 2 N2 - 1. The human umbilical vein has been found to contract in response to bradykinin (BK) and desArg9BK. 2. The rank order of potency of agonists, in the presence of the B1 receptor antagonist Lys[Leu8]desArg9BK, is as follows: [Hyp3, Tyr(Me)8]BK (pD2 8.88) = [Hyp3]BK (pD2 8.86) = LysBK (pD2 8.81) > or = BK (pD2 8.60) >> [Aib7]BK (pD2 6.38) >> desArg9BK and LysdesArg9BK (inactive). 3. Hoe 140 (pA2 8.42) inhibits the effects of BK while other B2 receptor peptide antagonists are very weak and WIN 64338 is practically inactive. 4. Venoconstrictor responses to desArg9BK of fresh tissues increase with time during the in vitro incubation and reach a maximum after 4-6 h. The activity of Hoe 140 (pA2 5.48) is negligible against B1 receptor agonists. 5. When measured in the presence of the selective B2 receptor antagonist Hoe 140 (400 nM), the order of potency of kinin related peptides on the B1 receptor is Lys[desArg9]BK (pD2 8.60) > desArg9BK (pD2 6.69). BK, LysBK, [Hyp3]BK and other B2 receptor agonists are inactive. 6. The B1 receptor antagonist, Lys[Leu8]desArg9BK (pA2 7.99), inhibits the response of the human vein to B1 receptor agonists (LysdesArg9BK or desArg9BK), but do not alter the effect of BK. 7. The results summarized in this paper indicate that the human isolated umbilical vein is a sensitive preparation containing both B1 and B2 receptors. The human B2 receptor shows some similarity with that of the rabbit (at least for agonist potencies) and differs from the B2 receptor of the guinea-pig. Compared to the rabbit B1 receptor, the human B1 receptor shows low sensitivity to peptides that lack the N-terminal Lys. SN - 0007-1188 UR - https://www.unboundmedicine.com/medline/citation/8735629/Receptors_for_kinins_in_the_human_isolated_umbilical_vein_ L2 - https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0007-1188&date=1996&volume=118&issue=2&spage=289 DB - PRIME DP - Unbound Medicine ER -