Abstract:
:Microbial adherence to host cells is an early key step in the establishment of infection. During the course of Legionnaire's disease, Legionella interactions with host cells are best documented for resident macrophages. However, L. pneumophila can also replicate within type I and type II pneumocytes, which cover almost the entire alveolar surface. In the presence of zinc, we observed a significant and concentration-dependent increase in L. pneumophila adherence to and invasion of type II pneumocytes. The zinc-dependent adherence mechanism seemed to be host-cell-independent, as a similar increase in cytoadherence was observed with macrophages. We also found that zinc-dependent adherence of L. pneumophila appears to involve recognition of zinc-binding pneumocyte receptors by a bacterial adhesin, and heparan-sulfated host cell receptors, but not type IV pili.
journal_name
Microb Pathogjournal_title
Microbial pathogenesisauthors
Yaradou DF,Raze D,Ginevra C,Ader F,Doléans-Jordheim A,Vandenesch F,Menozzi FD,Etienne J,Jarraud Sdoi
10.1016/j.micpath.2007.06.002subject
Has Abstractpub_date
2007-11-01 00:00:00pages
234-42issue
5-6eissn
0882-4010issn
1096-1208pii
S0882-4010(07)00083-6journal_volume
43pub_type
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