Affiliation:
1. *Los Alamos National Laboratory, Los Alamos, NM; and
2. †National Jewish Medical and Research Center and University of Colorado Health Sciences Center, Denver, CO
Abstract
Abstract
Chronic beryllium disease (CBD) is associated with the allelic substitution of a Glu69 in the HLA-DPB1 gene. Although up to 97% of CBD patients may have the Glu69 marker, about 30–45% of beryllium-exposed, unaffected individuals carry the same marker. Because CBD occurs in only 1–6% of exposed workers, the presence of Glu69 does not appear to be the sole genetic factor underlying the disease development. Using two rounds of direct automated DNA sequencing to precisely assign HLA-DPB1 haplotypes, we have discovered highly significant Glu69-containing allele frequency differences between the CBD patients and a beryllium-exposed, nondiseased control group. Individuals with DPB1 Glu69 in both alleles were almost exclusively found in the CBD group (6/20) vs the control group (1/75). Whereas most Glu69 carriers from the control group had a DPB1 allele *0201 (68%), most Glu69 carriers from the CBD group had a non-*0201 DPB1 Glu69-carrying allele (84%). The DPB1 allele *0201 was almost exclusively (29/30) associated with DPA1 *01 alleles, while the non-*0201 Glu69-containing DPB1 alleles were closely associated with DPA1 *02 alleles (26/29). Relatively rare Glu69-containing alleles *1701, *0901, and *1001 had extremely high frequencies in the CBD group (50%), as compared with the control group (6.7%). Therefore, the most common Glu69-containing DPB1 allele, *0201, does not seem to be a major disease allele. The results suggest that it is not the mere presence of Glu69, per se, but specific Glu69-containing alleles and their copy number (homozygous or heterozygous) that confer the greatest susceptibility to CBD in exposed individuals.
Publisher
The American Association of Immunologists
Subject
Immunology,Immunology and Allergy
Reference30 articles.
1. Hardy, H. L., J. R. Tabershaw. 1946. Delayed chemical pneumonitis occurring in workers to beryllium compounds. J. Ind. Hyg. Toxicol. 28: 197
2. Newman, L. S., J. Lloyd, E. Daniloff. 1996. The natural history of beryllium sensitization and chronic beryllium disease. Environ. Health Perspect. 104: 937
3. Kreiss, K., F. Miller, L. S. Newman, E. A. Ojo-Amaize, M. D. Rossman, C. Saltini. 1994. Chronic beryllium disease: from the workplace to cellular immunology, molecular immunogenetics, and back. Clin. Immun. Immunopath. 71: 123
4. Kreiss, K., S. Wasserman, M. M. Mroz, L. S. Newman. 1993. Beryllium disease screening in the ceramics industry: blood lymphocyte test performance and exposure-disease relations.. J Occup. Med. 35: 267
5. Newman, L. S.. 1995. Beryllium disease and sarcoidosis: clinical and laboratory links. Sarcoidosis 12: 7
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献