| Literature DB >> 19022324 |
J K Simon1, R Wahid, M Maciel, W L Picking, K L Kotloff, M M Levine, M B Sztein.
Abstract
We evaluated B memory responses in healthy adult volunteers who received one oral dose of live-attenuated Shigella flexneri 2a vaccine. LPS-specific B(M) cells increased from a median of 0 at baseline to 20 spot forming cells (SFC)/10(6) expanded cells following vaccination (p=0.008). A strong correlation was found between post-vaccination anti-LPS B(M) cell counts and peak serum anti-LPS IgG titers (rs=0.95, p=0.0003). Increases in B(M) specific for IpaB approaching significance were also observed. In sum, oral vaccination with live-attenuated S. flexneri 2a elicits B(M) cells to LPS and IpaB, suggesting that B(M) responses to Shigella antigens should be further studied as a suitable surrogate of protection in shigellosis.Entities:
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Year: 2008 PMID: 19022324 PMCID: PMC3753173 DOI: 10.1016/j.vaccine.2008.10.081
Source DB: PubMed Journal: Vaccine ISSN: 0264-410X Impact factor: 3.641