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A Study of the Effect of 8-aminoquinolines (Primaquine, Pamaquine, Pentaquine) on the Guinea-Pig Isolated Ileum

A Study of the Effect of 8-aminoquinolines (Primaquine, Pamaquine, Pentaquine) on the Guinea-Pig Isolated Ileum

J Fontaine, C Ouedraogo, J P Famaey

Arch Int Pharmacodyn Ther. 1985 Jun;275(2):217-30.

PMID: 4026466

Abstract:

Primaquine (10(-6) to 4.10(-5) M), an antimalarial drug, has stimulatory effects on the guinea-pig ileum which seem to be related to stimulation of histaminergic H1-receptors. Preincubation of the preparations with compound 48/80 greatly inhibits the primaquine induced contractions, indicating that they should result from histamine release. On the other hand, primaquine (from 10(-6) M) like 2 other 8-aminoquinolines, pamaquine and pentaquine, has inhibitory properties on the intramural cholinergic neurones of the ileum, and at higher concentrations (10(-5) M) exerts a direct inhibition on the smooth muscle.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP525611	Primaquine Related Compound A		525-61-1	Price

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