Involvement of MRP4 (ABCC4) in the luminal efflux of ceftizoxime and cefazolin in the kidney.

Involvement of MRP4 (ABCC4) in the luminal efflux of ceftizoxime and cefazolin in the kidney. Research Abstract Details 

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Involvement of MRP4 (ABCC4) in the luminal efflux of ceftizoxime and cefazolin in the kidney. Abstract Text:

Lei Ci,Hiroyuki Kusuhara,Masashi Adachi,John D Schuetz,Kenji Takeuchi,Yuichi Sugiyama,

The purpose of the present study was to investigate the role of multidrug resistance-associated protein 4 (MRP4) in the tubular secretion of cephalosporin antibiotics. Most of the injectable cephalosporins have an inhibitory effect on the ATP-dependent uptake of [(3)H]dehydroepiandrosterone sulfate by membrane vesicles expressing hMRP4, whereas cephaloridine, cefsulodin, and cefepime do not. Aminocephalosporins have a weak inhibitory effect. Significant ATP-dependent transport of ceftizoxime (K(m), 18 microM), cefazolin (K(m), 80 microM), cefotaxime, and cefmetazole has been observed only in the membrane vesicles expressing hMRP4. Ceftizoxime and cefazolin were given by a constant intravenous infusion to wild-type and Mrp4(-/-) mice. The steady-state plasma concentrations of ceftizoxime and cefazolin were unchanged in Mrp4(-)(/)(-) mice. The urinary recovery of ceftizoxime was significantly reduced in Mrp4(-/-) mice, whereas it was unchanged for cefazolin. The kidney-to-plasma concentration ratio of ceftizoxime and cefazolin was increased 2.0- and 2.7-fold in Mrp4(-/-) mice, respectively; thus, the renal clearance with regard to the kidney concentration was reduced in Mrp4(-/-) mice, to 7.5 and 34% of the corresponding control values, respectively. These results suggest that Mrp4 is involved in the tubular secretion of ceftizoxime and cefazolin, in concert with basolateral uptake transporters.

Involvement of MRP4 (ABCC4) in the luminal efflux of ceftizoxime and cefazolin in the kidney. Publishing Authors By Initials

L Ci,H Kusuhara,M Adachi,JD Schuetz,K Takeuchi,Y Sugiyama,

For similar heterocyclic compounds: heterocyclic compounds, 1-ring: pyrimidines: pyrimidinones: barbiturates: phenobarbital research abstracts see: heterocyclic compounds: heterocyclic compounds, 1-ring: pyrimidines: pyrimidinones: barbiturates: phenobarbital research

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Involvement of MRP4 (ABCC4) in the luminal efflux of ceftizoxime and cefazolin in the kidney. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Molecular pharmacology

VOLUME: 71

Page Numbers: 1591-7

Journal Abbreviation: Mol. Pharmacol.

ISSN: 0026-895X

DAY: 7

MONTH: 03

YEAR: 2007

Involvement of MRP4 (ABCC4) in the luminal efflux of ceftizoxime and cefazolin in the kidney. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 35623

Involvement of MRP4 (ABCC4) in the luminal efflux of ceftizoxime and cefazolin in the kidney. Keywords Mesh Terms:

KEYWORDS: Phenobarbital

MESH TERMS: metabolism

Chemical & Substance for Abstract: Involvement of MRP4 (ABCC4) in the luminal efflux of ceftizoxime and cefazolin in the kidney. Information

Substance Name: Ceftizoxime

Registry Number: 68401-81-0

Grant and Affiliation Information for Involvement of MRP4 (ABCC4) in the luminal efflux of ceftizoxime and cefazolin in the kidney.

AFFILIATION: Department of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Sciences, the University of Tokyo, Tokyo, Japan.

Country: United States

AGENCY: United States NCI

GRANT: P30-CA21745

ACRONYM: CA

MEDLINETA: Mol Pharmacol

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