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- Title
Growth rate and oxygen regulate the interactions of group B Streptococcus with polarized respiratory epithelial cells.
- Authors
Johri, Atul K.; Patwardhan, Vilas; Paoletti, Lawrence C.
- Abstract
We investigated growth conditions that regulate the ability of group B Streptococcus (GBS) to attach to, invade, and translocate through polarized human respiratory epithelial cells (RECs). GBS grown in a chemostat at a fast cell mass doubling time (td = 1.8 h), invaded RECs from both the apical and basolateral surfaces in higher numbers compared with those held at a td = 11 h. With the exception of adherence from the basolateral surface, GBS reached peak adherence to, invasion of, and translocation through RECs when held at the fast td with 15% dissolved oxygen compared with 0% dissolved oxygen. Growth rate and oxygen level strongly influence the interaction of GBS with polarized RECs and likely GBS pathogenicity.
- Subjects
STREPTOCOCCUS; GRAM-positive bacteria; BACTERIAL growth; OXYGEN; BACTERIAL diseases; NEONATAL diseases; HOST-parasite relationships
- Publication
Canadian Journal of Microbiology, 2005, Vol 51, Issue 4, p283
- ISSN
0008-4166
- Publication type
Article
- DOI
10.1139/W05-012