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. 1994 Mar;1(2):164–171. doi: 10.1128/cdli.1.2.164-171.1994

Novel in vitro method for identification of individuals at risk for beryllium hypersensitivity.

E A Ojo-Amaize 1, M S Agopian 1, J B Peter 1
PMCID: PMC368221  PMID: 7496939

Abstract

Beryllium-specific lymphocytes were generated by in vitro immunization of peripheral blood mononuclear cells (PBMC) from healthy unexposed individuals. Measurement of blastogenic responses of PBMC by [3H]thymidine uptake demonstrated that sensitization of PBMC with beryllium salts followed by stimulation with unrelated salts resulted in a negative response, whereas sensitization and restimulation of PBMC with beryllium salts produced a positive response. Flow cytometric and cell depletion analyses showed that all of the responding cells were CD4+ T cells. The in vitro immunization system was used to screen 52 human subjects for susceptibility to beryllium sensitization in vitro. The results show that of the 52 healthy unexposed subjects tested, only 1 (2%) was highly responsive, 4 subjects (8%) were moderately responsive, 20 subjects (39%) were low-level responders, and 27 subjects (52%) were nonresponders. The results showing 2% high-level responsiveness to beryllium sensitization in vitro correlate with the 1 to 5% prevalence of chronic beryllium disease in individuals sensitized to beryllium dust in vivo and thus support the thesis that the in vitro immunization system may permit the identification of individuals at risk for beryllium hypersensitivity.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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