Abstract:
:Previous studies demonstrated that blood-brain barrier (BBB) breakdown observed at the cerebral level during experimental allergic encephalomyelitis (EAE) arises from the presence of Mycobacterium tuberculosis in Freund's adjuvant and not only from the encephalitogenic antigens. The main objective of this study was to check if the mannan moiety of lipoarabinomannan present in the mycobacterial cell envelope is responsible for an immune response provoking a BBB breakdown. The results showed that: firstly, the complete Freund's adjuvant (CFA) contains a high release of polysaccharides; secondly, the rats immunized with the CFA present important serum concentration of anti-mannan antibody; and finally, a single 2-mg dose of anti-mannan antibody injected intravenously in naive rats provokes an immediate and reversible BBB breakdown. These results suggest that mannan arising from the solubilization of the mycobacterial cell wall in Freund's adjuvant induces a high production of anti-mannan antibody, which, in turn, provokes a BBB breakdown and possibly facilitates the induction of EAE.
journal_name
J Neuroimmunoljournal_title
Journal of neuroimmunologyauthors
Namer IJ,Steibel Jdoi
10.1016/s0165-5728(99)00236-2subject
Has Abstractpub_date
2000-02-01 00:00:00pages
63-8issue
1eissn
0165-5728issn
1872-8421pii
S0165-5728(99)00236-2journal_volume
103pub_type
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