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J Neurochem. 1991 Apr;56(4):1299-306.

Differences in the pharmacokinetics of cocaine in naive and cocaine-experienced rats.

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1
Department of Chemistry, Emory University, Atlanta, Georgia 30322.

Abstract

Enhanced cocaine concentrations in brain and blood observed after an intraperitoneal challenge dose in rats exposed to cocaine for 10 days by subcutaneous administration are traced to a change in the absorption process from the site of an intraperitoneal injection to general circulation. This conclusion is reached by three sets of corroborating results: (a) Adipose tissue of rats treated for 10 days with repeat subcutaneous injections of cocaine did not reveal a buildup of cocaine in sufficient concentrations to account for the twofold increase in brain and blood concentrations seen during intraperitoneal administration; (b) administration of the drug by an intravenous route after 10-day cocaine treatment did not show a significant difference between treatment and control groups;

PMID:
2002342
[Indexed for MEDLINE]

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