Abstract
FK is a potent immunosuppressive agent. FK can be analyzed in biologic fluids by EIA. The oral absorption of FK is rapid but variable in dogs. After intramuscular administration, FK is slowly and continuously absorbed. FK is primarily eliminated by metabolism. Less than 1% of the administered dose is excreted in the bile or the urine. After chronic intramuscular administration FK inhibits drug metabolism. Monitoring of FK levels in plasma is essential for the proper interpretation of efficacy and toxicity studies.
MeSH Terms
Administration, Oral
Animals
Chromatography, High Pressure Liquid
Dogs
Drug Evaluation, Preclinical
Immunoenzyme Techniques
Immunosuppressive Agents/administration & dosage,analysis,pharmacokinetics
Inactivation, Metabolic/drug effects
Injections, Intramuscular
Male
Microsomes, Liver/drug effects,enzymology
Pyridines/administration & dosage,analysis,pharmacokinetics
Rats
Rats, Inbred Strains
Tacrolimus
Chemicals
Immunosuppressive Agents
Pyridines
Tacrolimus
Authors & Affiliations
9 authors, click to expand affiliations / ORCID
Venkataramanan R
School of Pharmacy, University of Pittsburgh, PA.
Warty V S
Zemaitis M A
Sanghvi A T
Burckart G J
Seltman H
Todo S
Makowka L
Starzl T E
References (8)
8 references, click to expand
-
Determination of serum proteins by means of the biuret reaction.
J Biol Chem. 1949 Feb;177(2):751-66
PMID: 18110453
-
THE CARBON MONOXIDE-BINDING PIGMENT OF LIVER MICROSOMES. I. EVIDENCE FOR ITS HEMOPROTEIN NATURE.
J Biol Chem. 1964 Jul;239:2370-8
PMID: 14209971
-
Studies on the rate of reduction of hepatic microsomal cytochrome P-450 by reduced nicotinamide adenine dinucleotide phosphate: effect of drug substrates.
Mol Pharmacol. 1969 Mar;5(2):109-22
PMID: 4389181
-
Influence of prednisolone on antipyrine and chloramphenicol disposition in rabbits.
Pharmacology. 1984;29(2):117-20
PMID: 6473505
-
The effects of cyclosporin A (CsA) on hepatic microsomal drug metabolism in the rat.
Drug Metab Dispos. 1986 Jan-Feb;14(1):73-8
PMID: 2868869
-
Role of bile and bile salts on cyclosporine absorption in dogs.
Transplant Proc. 1987 Feb;19(1 Pt 2):1248-9
PMID: 3274312
-
Hepatic triphosphopyridine nucleotide-cytochrome c reductase: isolation, characterization, and kinetic studies.
J Biol Chem. 1962 Aug;237:2652-60
PMID: 14486217
-
The colorimetric estimation of formaldehyde by means of the Hantzsch reaction.
Biochem J. 1953 Oct;55(3):416-21
PMID: 13105648