Abstract:
:The activation/adaptive responses of human monocytes exposed to Bordetella pertussis parental or mutant strains were evaluated and correlated to the expression of two bacterial toxins: adenylate cyclase-hemolysin and pertussis toxin. The marked rise in intracellular cyclic adenosine monophosphate (cAMP) observed in monocytes infected by B. pertussis parental strain, inversely correlated with (1) the production of tumor necrosis factor alpha; (2) the release of superoxide anion; and (3) the expression of the 72-kDa heat shock/stress protein, Hsp70. Experiments performed with mutants deficient in adenylate cyclase-hemolysin or with purified bacterial toxins confirmed the key role of adenylate cyclase-hemolysin in the control of monocytes' response to infection by B. pertussis. This bacterial strategy primarily involves evasion from antimicrobial defenses and, eventually, the sacrifice of the host cell.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Njamkepo E,Pinot F,François D,Guiso N,Polla BS,Bachelet Mdoi
10.1002/(SICI)1097-4652(200004)183:1<91::AID-JCP11keywords:
subject
Has Abstractpub_date
2000-04-01 00:00:00pages
91-9issue
1eissn
0021-9541issn
1097-4652pii
10.1002/(SICI)1097-4652(200004)183:1<91::AID-JCP11journal_volume
183pub_type
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