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Title: The common mycobacterial antigens and their importance in the treatment of disease
Authors: Stanford, John
Stanford, Cynthia
Stansby, Gerard
Bottasso, Oscar
Bahr, George M. 
Grange, John
Affiliations: Faculty of Medicine 
Keywords: Common antigens
Heat shock/stress proteins
Mycobacterium vaccae
Subjects: Immunotherapy
Issue Date: 2009
Part of: Journal of current pharmaceutical design
Volume: 15
Issue: 11
Start page: 1248
End page: 1260
The mycobacteria are one of a number of genera making up the aerobic Actinomycetales. Their antigens demonstrable by immuno-precipitation methods can be divided into four groups. The group i antigens, common to all mycobacterial species, cross-react with their counterparts in animal cells, largely derived from mitochondria. Notable amongst these antigens are the heat-shock, or stress, proteins and possibly bacterial sugars. Tests of cell-mediated immunity show that people can be separated by their responsiveness in skin-test, or lymphocyte proliferation techniques, into four categories of responders. Category 1 individuals respond to all mycobacterial reagents through recognition of the group i antigens. Many chronic diseases are associated with a lack of cell-mediated responsiveness to the group i antigens, and have a raised antibody titre to them. This reflects a predominance of T helper 2 activity and reduced T helper 1 responsiveness as part of the pathogenesis of their diseases, which include chronic bacterial, viral and parasitic infections, allergies, autoimmunities and neoplasms. Packaged together, the group i antigens and the cell-wall adjuvants of selected aerobic Actinomycetales make potent immuno- modulatory reagents. An example is heat-killed Mycobacterium vaccae, useful in both prevention and treatment of disease. Treatment with such reagents results in alleviation of disease, restoration of cellular responsiveness to the common mycobacterial antigens and a decrease in antibody titres to them. This new approach to treatment for such a wide range of diseases has few disadvantageous side effects and can accompany other non-immunosuppressive therapies.
Type: Journal Article
Appears in Collections:Faculty of Medicine

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