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Eledoisin and Kassinin, but not Enterokassinin, stimulate ion transport in frog skin. 2004

Claudio Lippe, and Vito Bellantuono, and Concetta Ardizzone, and Giuseppe Cassano
Dipartimento di Fisiologia Generale ed Ambientale, Università di Bari, Via Amendola 165/A, 70126 Bari, Italy.

In frog skin, tachykinins stimulate the ion transport, estimated by measuring the short-circuit current (SCC) value, by interacting with NK1-like receptors. In this paper we show that Kassinin (NK2 preferring in mammals) increases the SCC, while Enterokassinin has no effect. Therefore, either 2 Pro residues or 1 Pro and 1 basic amino acid must be present in the part exceeding the C-terminal pentapeptide. Eledoisin (NK3 preferring in mammals) stimulation of SCC is reduced by CP99994 and SR48968 (NK1 and NK2 antagonists) and not affected by SB222200 (NK3 antagonist). None of the three antagonists affects Kassinin stimulation of SCC.

UI MeSH Term Description Entries
D010880 Piperidines A family of hexahydropyridines.
D011804 Quinolines
D011893 Rana esculenta An edible species of the family Ranidae, occurring in Europe and used extensively in biomedical research. Commonly referred to as "edible frog". Pelophylax esculentus
D004600 Eledoisin A peptide extracted from the posterior salivary glands of certain small octopi (Eledone spp., Mollusca), or obtained by synthesis. Its actions resemble those of SUBSTANCE P; it is a potent vasodilator and increases capillary permeability. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1364)
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
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
D001549 Benzamides BENZOIC ACID amides.
D012867 Skin The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.
D012879 Skin Physiological Phenomena The functions of the skin in the human and animal body. It includes the pigmentation of the skin. Skin Physiological Processes,Skin Physiology,Physiology, Skin,Skin Physiological Concepts,Skin Physiological Phenomenon,Skin Physiological Process,Concept, Skin Physiological,Concepts, Skin Physiological,Phenomena, Skin Physiological,Phenomenas, Skin Physiological,Phenomenon, Skin Physiological,Phenomenons, Skin Physiological,Physiological Concept, Skin,Physiological Concepts, Skin,Physiological Phenomena, Skin,Physiological Phenomenas, Skin,Physiological Phenomenon, Skin,Physiological Phenomenons, Skin,Process, Skin Physiological,Processes, Skin Physiological,Skin Physiological Concept,Skin Physiological Phenomenas,Skin Physiological Phenomenons
D013237 Stereoisomerism The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed) Molecular Stereochemistry,Stereoisomers,Stereochemistry, Molecular,Stereoisomer

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