Immunologic specificity of lymphocyte cell lines from dogs exposed to beryllium oxide

Immunopharmacology and Immunotoxicology
P J HaleyN F Johnson

Abstract

We have reported that dogs exposed twice to aerosols of beryllium oxide (BeO) developed Be-specific immune responses within the lung, along with granulomatous and fibrotic lung lesions. To evaluate the specificity of the immune response, lymphocytes from lungs and blood of BeO-exposed dogs were co-cultured over an irradiated blood monocyte layer, alternately with interleukin 2 and BeSO4. Resultant cell lines were then tested for their response to different metal cations, common canine recall antigens, and BeSO4 in an in vitro cell proliferation assay. The cell lines responded to BeSO4 in a dose-dependent fashion, with mean stimulation indices of 7, 58, 119, and 112 at concentrations of 0.01, 1.0, 10, and 100 microM BeSO4 respectively. Cells not proliferate when incubated with ZnSO4 or NiSO4, or with canine distemper, leptospira, adenovirus 2, parvovirus, or parainfluenza antigens. Lymphocytes from normal vaccinated dogs proliferated markedly when cultured with these antigens. Cells from the cultured cell lines (91%) stained with Thy-1 (a pan T-cell marker) and 96% stained with DT2 (a helper T-cell marker). Furthermore, the Be-induced proliferative response was restricted by major histocompatibility (MHC) class II antigens. Thes...Continue Reading

References

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Citations

Mar 18, 2000·Toxicology Letters·C F KuperN Bloksma
Jan 29, 2002·International Immunopharmacology·Richard T SawyerLee S Newman
Jun 21, 2001·Clinical Immunology : the Official Journal of the Clinical Immunology Society·A P FontenotB L Kotzin
Jul 13, 2002·Expert Review of Anticancer Therapy·G J KitangeR B Jenkins

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