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Document ID (ISN)41588
CIS number 84-519
ISSN - Serial title 0098-4108 - Journal of Toxicology and Environmental Health
Year 1983
Convention or series no.
Author(s) Olenchock S.A., Mull J.C., Mentnech M.S., Lewis D.M., Bernstein R.S.
Title Changes in humoral immunologic parameters after exposure to volcanic ash
Bibliographic information Mar. 1983, Vol. 11, No.3, p.395-404. 16 ref.
Abstract 464 loggers occupationally exposed to volcanic ash from the eruption of Mount St. Helens were studied shortly after and one year after the eruption, together with a control group of non-exposed loggers. Complement components C3 and C4 were significantly lower at both examinations in the exposed loggers. Immunoglobulin and antinuclear antibody showed no difference. There was a marked decrease in serum IgG and an increase in IgA levels in the exposed loggers after one year of exposure. Exposure to volcanic ash may affect humoral immunologic parameters. Some of the changes may be related to the presence of free silica.
Descriptors (primary) volcanic ash; serological reactions; logging; immunology
Descriptors (secondary) silica; short-term exposure; comparative study; serum complement; long-term exposure
Document type D - Periodical articles
Subject(s) Occupational pathology
Broad subject area(s)
Browse category(ies) Forestry and logging
Natural phenomena