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British Journal of Clinical Pharmacology logoLink to British Journal of Clinical Pharmacology
. 1982 Mar;13(3):423–425. doi: 10.1111/j.1365-2125.1982.tb01396.x

Plasma protein binding of phenytoin in the aged: in vivo studies.

M Patterson, R Heazelwood, B Smithurst, M J Eadie
PMCID: PMC1402098  PMID: 7059445

Abstract

1 The relation between plasma water phenytoin content and whole plasma phenytoin content in vivo was studied in 22 elderly patients (age range 62 to 87 years) and in 22 young patients (age range 18 to 33 years), all of whom were taking the drug for epilepsy. 2 The percentage of the drug existing unbound in plasma was slightly, but statistically significantly, higher in the elderly (12.8 +/- 1.8%) than in the young (11.1 +/- 2.5%). Reduced plasma albumin levels in the elderly (33.0 +/- 2.0 gl-1) as compared with the young (45.3 +/- 3.5 gl-1) probably contributed to the reduced protein binding in the older subjects.

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Selected References

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  1. Bender A. D., Post A., Meier J. P., Higson J. E., Reichard G., Jr Plasma protein binding of drugs as a function of age in adult human subjects. J Pharm Sci. 1975 Oct;64(10):1711–1713. doi: 10.1002/jps.2600641030. [DOI] [PubMed] [Google Scholar]
  2. Hayes M. J., Langman M. J., Short A. H. Changes in drug metabolism with increasing age: 2. phenytoin clearance and protein binding. Br J Clin Pharmacol. 1975 Feb;2(1):73–79. doi: 10.1111/j.1365-2125.1975.tb00475.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Hooper W. D., Bochner F., Eadie M. J., Tyrer J. H. Plasma protein binding of diphenylhydantoin. Effects of sex hormones, renal and hepatic disease. Clin Pharmacol Ther. 1974 Mar;15(3):276–282. doi: 10.1002/cpt1974153276. [DOI] [PubMed] [Google Scholar]
  4. Hooper W. D., Sutherland J. M., Bochner F., Tyrer J. H., Eadie M. J. The effect of certain drugs on the plasma protein binding of phenytoin. Aust N Z J Med. 1973 Aug;3(4):377–381. doi: 10.1111/j.1445-5994.1973.tb03109.x. [DOI] [PubMed] [Google Scholar]
  5. Lunde P. K., Rane A., Yaffe S. J., Lund L., Sjöqvist F. Plasma protein binding of diphenylhydantoin in man. Interaction with other drugs and the effect of temperature and plasma dilution. Clin Pharmacol Ther. 1970 Nov-Dec;11(6):846–855. doi: 10.1002/cpt1970116846. [DOI] [PubMed] [Google Scholar]
  6. Löscher W. A comparative study of the protein binding of anticonvulsant drugs in serum of dog and man. J Pharmacol Exp Ther. 1979 Mar;208(3):429–435. [PubMed] [Google Scholar]
  7. MacGee J. Rapid determination of diphenylhydantoin in blood plasma by gas-liquid chromatography. Anal Chem. 1970 Mar;42(3):421–422. doi: 10.1021/ac60285a024. [DOI] [PubMed] [Google Scholar]
  8. Monks A., Boobis S., Wadsworth J., Richens A. Plasma protein binding interaction between phenytoin and valproic acid in vitro. Br J Clin Pharmacol. 1978 Dec;6(6):487–492. doi: 10.1111/j.1365-2125.1978.tb00871.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Patsalos P. N., Lascelles P. T. Effect of sodium valproate on plasma protein binding of diphenylhydantoin. J Neurol Neurosurg Psychiatry. 1977 Jun;40(6):570–574. doi: 10.1136/jnnp.40.6.570. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Porter R. J., Layzer R. B. Plasma albumin concentration and diphenylhydantoin binding in man. Arch Neurol. 1975 May;32(5):298–303. doi: 10.1001/archneur.1975.00490470042005. [DOI] [PubMed] [Google Scholar]
  11. Reidenberg M. M., Odar-Cederlöf I., von Bahr C., Borgå O., Sjöqvist F. Protein binding of diphenylhydantoin and desmethylimipramine in plasma from patients with poor renal function. N Engl J Med. 1971 Jul 29;285(5):264–267. doi: 10.1056/NEJM197107292850506. [DOI] [PubMed] [Google Scholar]

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