Cellular and Cytokine Responses to Salmonella enterica Serotype Typhi Proteins in Patients with Typhoid Fever in Bangladesh
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Author
Bhuiyan, Saruar
Sayeed, Abu
Khanam, Farhana
Rahman Bhuiyan, Taufiqur
Sheikh, Alaullah
Salma, Umme
Pacek, Marcin
LaBaer, Joshua
Qadri, Firdausi
Note: Order does not necessarily reflect citation order of authors.
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https://doi.org/10.4269/ajtmh.13-0261Metadata
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Bhuiyan, S., A. Sayeed, F. Khanam, D. T. Leung, T. Rahman Bhuiyan, A. Sheikh, U. Salma, et al. 2014. “Cellular and Cytokine Responses to Salmonella enterica Serotype Typhi Proteins in Patients with Typhoid Fever in Bangladesh.” The American Journal of Tropical Medicine and Hygiene 90 (6): 1024-1030. doi:10.4269/ajtmh.13-0261. http://dx.doi.org/10.4269/ajtmh.13-0261.Abstract
We assessed interferon-gamma (IFN-γ) responses via enzyme-linked immunosorbent spot (ELISPOT) to a number of S. Typhi antigens in samples from humans with S. Typhi bacteremia and typhoid fever in Bangladesh. Compared with responses in healthy endemic zone controls, there were significantly increased IFN-γ responses at the time of clinical presentation (acute phase) and at convalescence 14–28 days later. The majority (80–90%) of IFN-γ expressing T cells were CD4+. We observed a significant increase in interleukin-17 (IL-17) positive CD4 + T cells at convalescent versus acute stage of infection using an intracellular cytokine staining assay. We also found that stimulated peripheral blood mononuclear cells (PBMCs) produced significantly increased levels of a number of cytokines at the convalescent versus acute phase of infection, including IFN-γ, MIP-1β, sCD40L, TNF-β, IL-13, and IL-9. These results suggest that S. Typhi antigens induce a predominantly Th1 response, but that elevations in other cytokines may be modulatory.Other Sources
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4047724/pdf/Terms of Use
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