Relationship between 'aromatic hydrocarbon responsiveness' and the survival times in mice treated with various drugs and environmental compounds

J. R. Robinson, J. S. Felton, Roy C Levitt, S. S. Thorgeirsson, D. W. Nebert

Research output: Contribution to journalArticle

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Abstract

Differences in toxicity caused by various environmental pollutants or drugs were studied in several inbred strains of mice and in siblings of the (C57BL/6N) (DBA/2N)F 1 x DBA/2N backcross, in which the phenotypes aromatic hydrocarbon 'responsiveness' or 'nonresponsiveness' had been determined. This trait of 'responsiveness' which refers to the capacity for induction of cytochrome P 1450 and numerous monooxygenase activities by certain aromatic hydrocarbons has been previously shown to segregate almost exclusively as a single gene among offspring of the (C57BL/6N) (DBA/2N)F 1 x DBA/2N backcross. 'Responsiveness' is associated with shortened survival times following large (500 mg kg -1 day -1) doses of intraperitoneal benzo[a] pyrene, 7,12 dimethylbenz[a] anthracene, 3 methylcholanthrene, β naphthoflavone, or polychlorinated biphenyls; the cause of death in these experiments is not yet certain. 'Nonresponsiveness' is associated with shortened survival times following smaller (120 mg kg -1 day -1) oral doses of benzo[a] pyrene, 7,12 dimethylbenz[a] anthracene, 3 methylcholanthrene, or lindane, yet is associated with a longer survival time following small daily doses of oral polychlorinated biphenyls. All nonresponsive mice ingesting benzo[a] pyrene daily die within 4 weeks, whereas the survival of responsive mice ingesting benzo[a] pyrene daily is not significantly different from that of control mice; the apparent cause of early death in these experiments is toxic depression of the bone marrow, the pancytopenia leading to death due to hemorrhage of overwhelming infection. When given an intraperitoneal dose of lindane that is lethal to normal mice within 12 hr, 3 methylcholanthrene treated responsive mice are protected and therefore do not die during this time period. A dose of bromobenzene sufficient to cause considerable necrosis in the liver of a pregnant mouse does not transplacentally cause any detectable necrosis in fetal liver. Genetic differences in aromatic hydrocarbon responsiveness between C57BL/6N and DBA/2N mice are not associated with toxicity caused by large intraperitoneal daily doses of bromobenzene, zoxazolamine, diphenylhydantoin, dichlorodiphenyltrichloroethane (p,p' DDT), hexachlorobenzene, butylated hydroxytoluene, chlorpromazine, tetracycline hydrochloride, carbamazepine, or diphenylbarbituric acid, and are not associated with differences in survival time following bromobenzene of p,p' DDT in the diet. These data suggest that the life span of animals exposed to certain environmental compounds can be markedly influenced by a single gene or a very small number of genes, and that the same genetic trait can be either beneficial or detrimental to the animal, depending on whether detoxification or metabolic potentiation occurs.

Original languageEnglish
Pages (from-to)850-865
Number of pages16
JournalMolecular Pharmacology
Volume11
Issue number6
StatePublished - Dec 1 1975
Externally publishedYes

Fingerprint

Aromatic Hydrocarbons
Benzo(a)pyrene
Methylcholanthrene
Pharmaceutical Preparations
Lindane
DDT
Polychlorinated Biphenyls
Cause of Death
Zoxazolamine
Necrosis
Genes
Hexachlorobenzene
Environmental Pollutants
Butylated Hydroxytoluene
Inbred DBA Mouse
Pancytopenia
Inbred Strains Mice
Poisons
Liver
Chlorpromazine

ASJC Scopus subject areas

  • Pharmacology

Cite this

Relationship between 'aromatic hydrocarbon responsiveness' and the survival times in mice treated with various drugs and environmental compounds. / Robinson, J. R.; Felton, J. S.; Levitt, Roy C; Thorgeirsson, S. S.; Nebert, D. W.

In: Molecular Pharmacology, Vol. 11, No. 6, 01.12.1975, p. 850-865.

Research output: Contribution to journalArticle

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