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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Possible involvement of peripheral 5-HT4 receptors in copper sulfate-induced vomiting in dogs.

The involvement of visceral afferent fibers and 5-HT3 or 5-HT4 receptors in the vomiting induced by oral administration of copper sulfate was investigated in beagle dogs. Vomiting induced by copper sulfate (100 mg/kg) was inhibited markedly by bilateral abdominal vagotomy and bilateral greater splanchnic nerve section. The vomiting induced by copper sulfate was inhibited by blocking 5-HT4 receptors with high doses (1 and 3 mg/kg, i.v.) of ICS 205-930. On the other hand, blocking 5-HT3 receptors with MDL 72222 (0.5 and 5 mg/kg, i.v.) or low doses (0.01 mg/kg i.v.) of ICS 205-930 had no apparent effect on the vomiting induced by copper sulfate. Oral administration of a 5-HT4 receptor agonist, 5-methoxytryptamine (5-MT), caused vomiting at a dose of 100 mg/kg, and the vomiting was inhibited markedly by abdominal visceral nerve section or a high dose (1 mg/kg, i.v.), but not a low dose (0.01 mg/kg, i.v.), of ICS 205-930. Intravenous administration of 5-MT (10 mg/kg) failed to induce vomiting. These results suggest that the abdominal visceral afferent fibers and possibly peripheral 5-HT4 receptors play an important role in the vomiting induced by oral administration of copper sulfate in dogs.[1]

References

  1. Possible involvement of peripheral 5-HT4 receptors in copper sulfate-induced vomiting in dogs. Fukui, H., Yamamoto, M., Sasaki, S., Sato, S. Eur. J. Pharmacol. (1994) [Pubmed]
 
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