Circadian rhythms in the CNS and peripheral clock disorders: Chronopharmacological findings on antitumor drugs

Research output: Contribution to journalShort survey

14 Citations (Scopus)

Abstract

The effectiveness and toxicity of antitumor drugs vary depending on dosing time associated with the 24-h rhythms of biochemical, physiological, and behavioral processes under the control of the circadian clock. Such chronopharmacological phenomena are influenced by not only the pharmacokinetics but also pharmacodynamics of medications. For example, the antitumor effect and/or toxicity of irinotecan hydrochloride, interferon, and antiangiogenic agents vary depending on the dosing time associated with the 24-h rhythm of their target enzyme, receptor, protein, and pharmacokinetics. Many of them are controlled by clock genes. Chronotherapy is especially relevant when the risk and/or intensity of the symptoms of disease vary predicably over time. In a randomized multicenter trial involving patients with previously untreated metastases from colorectal cancer, the chronomodulated infusion of oxaliplatin, fluorouracil (5-FU), and folinic acid is compared with a constant-rate infusion method. Side effects such as stomatitis, peripheral sensory neuropathy are lower and the objective response is higher in the chronotherapy as compared with the fixed-rate infusion. The merit of chronomodulated infusion is supported by the 24-h rhythm of DNA synthesis and the activity of dehydropyrimidine dehydrogenase, which brings about the intracellular catabolism of 5-FU. Although interferon (IFN) also alters the clock function, the disruptive effect of IFN on clock function can be overcome by devising a dosing regimen that minimizes adverse drug effects on clock function. Thus one approach to increasing the efficiency of pharmacotherapy is the administration of drugs at times at which they are most effective and/or best tolerated.

Original languageEnglish
Pages (from-to)155-158
Number of pages4
JournalJournal of Pharmacological Sciences
Volume103
Issue number2
DOIs
Publication statusPublished - Feb 27 2007

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Circadian Rhythm
Chronotherapy
Fluorouracil
Antineoplastic Agents
Interferons
irinotecan
oxaliplatin
Pharmacokinetics
Physiological Phenomena
Stomatitis
Circadian Clocks
Angiogenesis Inhibitors
Leucovorin
Peripheral Nervous System Diseases
Pharmaceutical Preparations
Multicenter Studies
Colorectal Neoplasms
Oxidoreductases
Neoplasm Metastasis
Drug Therapy

All Science Journal Classification (ASJC) codes

  • Molecular Medicine
  • Pharmacology

Cite this

Circadian rhythms in the CNS and peripheral clock disorders : Chronopharmacological findings on antitumor drugs. / Ohdo, Shigehiro.

In: Journal of Pharmacological Sciences, Vol. 103, No. 2, 27.02.2007, p. 155-158.

Research output: Contribution to journalShort survey

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