A multiparameter chemical toxicity test using Salmonella typhimurium and Spirochaeta aurantia

G. E. Kupillas, K. G. Pill, F. W. Picardal, Robert G Arnold

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A battery of measurements, including specific growth rate, intracellular ATP level, and respiration rate, was designed to measure the responses of Salmonella typhimurium and Spirochaeta aurantia to chemical toxicants. The test battery provided both a measure of relative toxicity and an indication of the biochemical mechanism of chemical toxicity. The utility of the battery was investigated using chemicals (cyanide, 2,4-dinitrophenol, chloramphenicol, and dicyclohexylcarbodiimide) for which toxic mechanisms have been clearly established. Test battery results provided a reproducible ''signature'' for each model compound, which was useful for differentiating among compounds whose primary mechanism of toxicity involves (a) inhibition of catabolic activity leading to oxidative phosphorylation, (b) disruption of membrane integrity, and (c) interference with biosynthetic activity. The responses of the two test organisms to model inhibitors were qualitatively identical and paralleled predictions based on theoretical grounds. In theory, the test battery can measure toxicity among classes of compounds that alternative, single-parameter microbial tests would classify as nontoxic. The microbial test battery described may eventually provide a theoretically superior and economically attractive alternative to established toxicity testing procedures.

Original languageEnglish (US)
Pages (from-to)293-307
Number of pages15
JournalEnvironmental Toxicology and Water Quality
Volume6
Issue number3
StatePublished - 1991

Fingerprint

Spirochaeta
Dicyclohexylcarbodiimide
2,4-Dinitrophenol
Toxicity Tests
Salmonella
Poisons
Oxidative Phosphorylation
Cyanides
Chloramphenicol
Salmonella typhimurium
Respiratory Rate
toxicity test
Toxicity
Adenosine Triphosphate
Membranes
toxicity
Growth
cyanide
chemical
battery

ASJC Scopus subject areas

  • Toxicology
  • Health, Toxicology and Mutagenesis
  • Water Science and Technology

Cite this

A multiparameter chemical toxicity test using Salmonella typhimurium and Spirochaeta aurantia. / Kupillas, G. E.; Pill, K. G.; Picardal, F. W.; Arnold, Robert G.

In: Environmental Toxicology and Water Quality, Vol. 6, No. 3, 1991, p. 293-307.

Research output: Contribution to journalArticle

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