Title : What kinds of substrates show P-glycoprotein-dependent intestinal absorption? Comparison of verapamil with vinblastine.

Pub. Date : 2006 Jun

PMID : 16858128






2 Functional Relationships(s)
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1 The influence of P-glycoprotein (P-gp) on intestinal absorption of drugs was investigated by comparison of the uptakes of two P-gp substrates, verapamil and vinblastine, using intestinal segments of wild-type and mdr1a/1b gene-deficient (mdr1a/1b(-/-)) mice, and Caco-2 cells. Vinblastine ATP binding cassette subfamily B member 1 Homo sapiens
2 In Caco-2 cells, it was found that vinblastine had a high value of efflux/influx ratio (an index of affinity for P-gp) of 12.1, and a low permeability of less than 1 x 10(-6) cm/sec. Vinblastine ATP binding cassette subfamily B member 1 Homo sapiens