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| Content Provider | PubMed Central |
|---|---|
| Author | Fairchok, M. P. Rouse, J. H. Morris, S. L. |
| Abstract | In the United States, disseminated infection with environmental mycobacteria, including the Mycobacterium avium complex, is the most common opportunistic bacterial infection seen in AIDS patients. However, the source and relative degree of exposure to environmental mycobacteria during childhood are unknown. To examine the age-related exposure to mycobacteria, we obtained serum samples from 150 children ranging in age from 6 months to 18 years. Each sample was tested against both M. avium (serovar 1) sonic extracts and mycobacterial lipoarabinomannan, using an enzyme-linked immunosorbent assay (ELISA). All serum samples were also subjected to immunoblot analysis with the sonic extract antigen. These studies established that elevated ELISA values (P < 0.0001) and increased immunoblot reactivity (P < 0.0001) against mycobacterial antigens were both associated with increasing age. The seroreactivity differences were most striking when comparing the age groups of children below the age of 6 with the older age groups. Our results suggest that the development of humoral immune responses to mycobacterial antigens in children correlates with increasing age and that there may be an environmental factor predisposing to mycobacterial exposure which is related to advancing age. |
| Starting Page | 443 |
| File Format | |
| ISSN | 10986588 |
| e-ISSN | 10986588 |
| Journal | Clinical and Diagnostic Laboratory Immunology |
| Issue Number | 4 |
| Volume Number | 2 |
| Language | English |
| Publisher Date | 1995-07-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Clinical Biochemistry Immunology Microbiology (medical) |
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