Summary
Rats pretreated for 5 days with 50 mg/ kg of pentobarbital tolerated statistically significant higher doses of misonidazole before the onset of misonidazole-induced neurotoxicity than rats treated intermittently with the same dose of pentobarbital. Presumably in pretreated rats, pentobarbital induced an increase in the activities of hepatic microsomal enzymes that led to a more rapid metabolism of misonidazole than in rats treated only intermittently.
Similar content being viewed by others
References
Bobbin RP, May JG, Lemoine RL: Effects of pentobarbital and ketamine on brain stem auditory potentials. Arch Otolaryngol 105:467–470, 1979.
Edwards MSB, Bolger CA, Phillips TL, Levin VA, Jewett DL: Evaluation of misonidazole peripheral neurotoxicity in rats by analysis of nerve trains evoked response. Int J Radiol Oncol Biol Phys 8:69–74, 1982.
Edwards MSB, Powers SK, Baringer RA, Jewett DL, Bolger C, Phillips TL: Evoked potentials in rats with misonidazole neurotoxicity. I. Brain stem auditory evoked potentials. J Neuro-Oncol 1:115–123, 1983.
Edwards MSB, Gordon DG, Levin VA, Phillips TL: Misonidazole neurotoxicity in rats: Part I. Evaluation of misonidazole neurotoxicity in rats by analysis of brain stem auditory and cortical evoked potentials. J Neuro-Oncol 2:91–94, 1984.
Mead PB, Gibson M, Schentag JJ, Ziemniak JA: Possible alteration of metronidazole metabolism by phenobarbital. N Eng J Med 306:1490, 1982.
Moore JC, Paterson ICM, Newman H, Venables S: Pheyntoin-induced changes in pharmacokinetics of misonidazole in radiotherapy patients. Br J Cancer 44:592, 1981.
Powers SK, Edwards MSB, Baringer RA: Evoked potentials in rats with misonidazole neurotoxicity. 11. Somatosensory evoked potentials. J Neuro-Oncol 1:125–130, 1983.
Urtasun RC, Chapman JD, Feldstein ML, Band RP, Rabin HR, Wilson AF, Marynowski B, Starrveld E, Shnitak T: Peripheral neuropathy related to misonidazole: incidence and pathology. Br J Cancer (Suppl III) 37: 271–275, 1978.
Wasserman TH, Phillips TL, Van Raaltee GV, Urtasun RC, Partington J, Kozio,A, Schwade JG, Gangji D, Strong JM: The neurotoxicity of misonidazole: potential modifying role of phenytoin sodium and dexamethasone. Br J Radiol 53:172, 1980.
Workman P: Effects of pretreatment with pentobarbitone and phenytoin on the pharmacokinetics and toxicity of misonidazole in mice. Br J Cancer 40:335–353, 1979.
Workman P, Bleehen NM, Wiltshire CR: Phenytoin shortens the half-life of the hypoxic cell radiosensitizer misonidazole in man: implications for possible reduced toxicity. Br J Cancer 41:302–304, 1980.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Edwards, M.S., Gordon, D.G., Salamy, A. et al. Misonidazole neurotoxicity in rats: Part 11. J Neuro-Oncol 2, 95–98 (1984). https://doi.org/10.1007/BF00177892
Issue Date:
DOI: https://doi.org/10.1007/BF00177892