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Exposure of rabbits to methylchloroform. Vestibular disturbances correlated to blood and cerebrospinal fluid levels

  • B. Larsby
  • R. Tham
  • L. M. Ödkvist
  • B. Norlander
  • D. Hydén
  • G. Aschan
  • A. Rubin
Article

Summary

A previously described experimental model for studying the effects on the central nervous system of rabbits, specifically the vestibular apparatus, has been applied to methylchloroform. To achieve a steady concentration the solvent was infused as a lipid emulsion. The blood and cerebrospinal fluid kinetics have been studied. The arterial blood level seems to be closely correlated to the concentration in the central nervous tissue. Vestibular function has been studied by recording the involuntary eye movements — nystagmus — which are elicited via central vestibulo-oculomotor connections. At blood levels of methylchloroform above 75 ppm a so called “positional nystagmus”, indicated vestibular disturbances, is demonstrated. The relationship between the present findings in rabbits and the reaction and blood concentrations in people exposed to industrial solvents, are discussed.

Key words

Gas chromatography Industrial solvents Methylchloroform Vestibular disturbances 

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Copyright information

© Springer-Verlag 1978

Authors and Affiliations

  • B. Larsby
    • 1
  • R. Tham
    • 1
  • L. M. Ödkvist
    • 1
  • B. Norlander
    • 1
  • D. Hydén
    • 1
  • G. Aschan
    • 1
  • A. Rubin
    • 1
  1. 1.Department of Otolaryngology and Department of Clinical Pharmacology, Regional and University HospitalLinköping UniversityLinköpingSweden

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