Biomaterial Database

Endothelin ET(B1) receptor-mediated relaxation of rabbit basilar artery. 1998

M Zuccarello, and R Boccaletti, and R M Rapoport

Department of Neurosurgery, University of Cincinnati College of Medicine, and Veterans Affairs Medical Center, OH 45267-0575, USA.

This study tests whether endothelin receptor agonist-induced relaxation of the cerebral vasculature is mediated via endothelin ET(B1) receptor activation. Sarafotoxin S6c, an endothelin ET(B) receptor agonist, relaxed rabbit basilar artery constricted with serotonin in situ. BQ788 (N-cis-2,6-dimethylpiperidinocarbonyl L-gamma-MeLeu-D-Trp (COOCH3)-Nle), and RES-701-1 (Gly-Asn-Trp-His-Gly-Thr-Ala-Pro-Asp-Trp-Phe-Phe-Asn-Tyr-Tyr-Trp), endothelin ET(B1/B2) and endothelin ET(B1) receptor antagonists, respectively, prevented sarafotoxin S6c-induced relaxation. RES-701-1 was selective for the ET(B1) receptor, as the endothelin-1 constriction elicited in the presence of BQ610 (homopiperidenyl-CO-Leu-D-Trp (CHO)-D-Trp-OH), an endothelin ET(A) receptor antagonist, was enhanced by RES-701-1, and relaxed by BQ788. These results represent the first demonstration of the presence of endothelin ET(B1) receptors in the cerebral vasculature.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D009842	Oligopeptides	Peptides composed of between two and twelve amino acids.	Oligopeptide
D010880	Piperidines	A family of hexahydropyridines.
D011817	Rabbits	A burrowing plant-eating mammal with hind limbs that are longer than its fore limbs. It belongs to the family Leporidae of the order Lagomorpha, and in contrast to hares, possesses 22 instead of 24 pairs of chromosomes.	Belgian Hare,New Zealand Rabbit,New Zealand Rabbits,New Zealand White Rabbit,Rabbit,Rabbit, Domestic,Chinchilla Rabbits,NZW Rabbits,New Zealand White Rabbits,Oryctolagus cuniculus,Chinchilla Rabbit,Domestic Rabbit,Domestic Rabbits,Hare, Belgian,NZW Rabbit,Rabbit, Chinchilla,Rabbit, NZW,Rabbit, New Zealand,Rabbits, Chinchilla,Rabbits, Domestic,Rabbits, NZW,Rabbits, New Zealand,Zealand Rabbit, New,Zealand Rabbits, New,cuniculus, Oryctolagus
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
D001488	Basilar Artery	The artery formed by the union of the right and left vertebral arteries; it runs from the lower to the upper border of the pons, where it bifurcates into the two posterior cerebral arteries.	Arteries, Basilar,Artery, Basilar,Basilar Arteries
D014661	Vasoconstriction	The physiological narrowing of BLOOD VESSELS by contraction of the VASCULAR SMOOTH MUSCLE.	Vasoconstrictions
D014662	Vasoconstrictor Agents	Drugs used to cause constriction of the blood vessels.	Vasoactive Agonist,Vasoactive Agonists,Vasoconstrictor,Vasoconstrictor Agent,Vasoconstrictor Drug,Vasopressor Agent,Vasopressor Agents,Vasoconstrictor Drugs,Vasoconstrictors,Agent, Vasoconstrictor,Agent, Vasopressor,Agents, Vasoconstrictor,Agents, Vasopressor,Agonist, Vasoactive,Agonists, Vasoactive,Drug, Vasoconstrictor,Drugs, Vasoconstrictor
D014664	Vasodilation	The physiological widening of BLOOD VESSELS by relaxing the underlying VASCULAR SMOOTH MUSCLE.	Vasodilatation,Vasorelaxation,Vascular Endothelium-Dependent Relaxation,Endothelium-Dependent Relaxation, Vascular,Relaxation, Vascular Endothelium-Dependent,Vascular Endothelium Dependent Relaxation
D014757	Viper Venoms	Venoms from SNAKES of the viperid family. They tend to be less toxic than elapid or hydrophid venoms and act mainly on the vascular system, interfering with coagulation and capillary membrane integrity and are highly cytotoxic. They contain large amounts of several enzymes, other factors, and some toxins.	Russell Viper Venom,Russell Viper Venoms,Russell's Viper Venom,Russell's Viper Venoms,Viperidae Venoms,Cerastes Venom,Cerastes Venoms,Egyptian Sand Viper Venom,Viper Venom,Viperotoxin,Russells Viper Venom,Russells Viper Venoms,Venom, Cerastes,Venom, Russell Viper,Venom, Russell's Viper,Venom, Viper,Venoms, Cerastes,Venoms, Russell Viper,Venoms, Russell's Viper,Venoms, Viper,Venoms, Viperidae,Viper Venom, Russell,Viper Venom, Russell's,Viper Venoms, Russell,Viper Venoms, Russell's