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Evaluation of effects of copper histidine on copper transporter 1-mediated accumulation of platinum and oxaliplatin-induced neurotoxicity in vitro and in vivo

Citation

Ip, V and Liu, JJ and McKeage, MJ, Evaluation of effects of copper histidine on copper transporter 1-mediated accumulation of platinum and oxaliplatin-induced neurotoxicity in vitro and in vivo, Clinical and Experimental Pharmacology and Physiology, 40, (6) pp. 371-378. ISSN 0305-1870 (2013) [Refereed Article]

Copyright Statement

Copyright 2013 Wiley Publishing Asia

DOI: doi:10.1111/1440-1681.12088

Abstract

SUMMARY 1. The purpose of the present study was to determine whether copper histidine could inhibit copper transporter 1 (Ctr1)-mediated transport of oxaliplatin in vitro and thereby limit the accumulation of platinum and neurotoxicity of oxaliplatin in dorsal root ganglion (DRG) tissue in vivo. 2. In HEK293 cells overexpressing rat Ctr1, copper histidine was shown to be transported by Ctr1 and to inhibit their Ctr1-mediated uptake of oxaliplatin. 3. Pilot in vivo dose-finding studies showed that copper histidine at doses up to 2 mg/kg, p.o., daily for 5 days/week could be added to maximum tolerated doses of oxaliplatin (1.85 mg/kg, i.p., twice weekly) for 8 week combination treatment studies in female Wistar rats. 4. After treatment, rats showed significant changes in sensory neuron size profiles in DRG tissue induced by oxaliplatin that were not altered by its coadministration with copper histidine. 5. The expression of copper transporters (Ctr1 and coppertransporting P-type ATPase 1 (Atp7a)) in DRG tissue appeared unchanged following treatment with oxaliplatin given alone or with copper histidine. 6. Platinum and copper tissue levels were higher in DRG than in most other tissues, but were unaltered by the addition of copper histidine to oxaliplatin treatment. 7. In conclusion, copper histidine inhibited cellular uptake of oxaliplatin mediated by Ctr1 in vitro without altering the accumulation of platinum or neurotoxicity of oxaliplatin in DRG tissue in vivo at doses tolerated in combination with oxaliplatin treatment.

Item Details

Item Type:Refereed Article
Keywords:Copper transporter 1, platinum drug, oxaliplatin, neurotoxicity
Research Division:Medical and Health Sciences
Research Group:Pharmacology and Pharmaceutical Sciences
Research Field:Clinical Pharmacology and Therapeutics
Objective Division:Health
Objective Group:Other Health
Objective Field:Health not elsewhere classified
Author:Liu, JJ (Dr Johnson Liu)
ID Code:86352
Year Published:2013
Web of Science® Times Cited:6
Deposited By:Pharmacy
Deposited On:2013-09-06
Last Modified:2017-01-16
Downloads:0

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