P-glycoprotein interactions of nefazodone and trazodone in cell culture.
Article Details
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Stormer E, von Moltke LL, Perloff MD, Greenblatt DJ
P-glycoprotein interactions of nefazodone and trazodone in cell culture.
J Clin Pharmacol. 2001 Jul;41(7):708-14.
- PubMed ID
- 11452702 [ View in PubMed]
- Abstract
This study investigated the effects of nefazodone (NFZ) and trazodone (TZD) on P-glycoprotein (P-gp) activity and expression in cell culture. NFZ and TZD showed no differential transport between the basolateral to apical and apical to basolateral direction across Caco-2 cell monolayers. Transport in either direction was not affected by verapamil. NFZ was a potent inhibitor (IC50 = 4.7 microM) of rhodamine123 (Rh123) B to A transport across Caco-2 cell monolayers, while TZD had minimal effect. Following 72-hour exposure of LS180V cells to NFZ and TZD (10 microM), a twofold increase in immunoreactive P-gp was observed. Rh123 accumulation into these cells was reduced to 65% and 74% of control by NFZ and TZD (10 microM), respectively. It was concluded that differential rates of transport of NFZ and TZD in Caco-2 cells were not evident. However, NFZ is an inhibitor of P-gp activity at clinically relevant in vivo concentrations and may have the potential to increase bioavailability of coadministered compounds that are substrates for transport. Concentrations of NFZ and TZD achieved in the intestine after chronic oral dosing may induce P-gp expression and reduce absorption of coadministered drugs.
DrugBank Data that Cites this Article
- Drug Transporters
Drug Transporter Kind Organism Pharmacological Action Actions Nefazodone P-glycoprotein 1 Protein Humans UnknownInhibitorInducerDetails Trazodone P-glycoprotein 1 Protein Humans UnknownInducerDetails - Binding Properties
Drug Target Property Measurement pH Temperature (°C) Nefazodone P-glycoprotein 1 IC 50 (nM) 4700 N/A N/A Details - Drug Interactions
Drugs Interaction Integrate drug-drug
interactions in your softwareDigoxinNefazodone The serum concentration of Digoxin can be increased when it is combined with Nefazodone.