Journal
CLINICAL IMMUNOLOGY
Volume 119, Issue 3, Pages 339-345Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.clim.2006.01.017
Keywords
kala azar; post kala azar dermal; leishmaniasis; cytokines; immune response; interferon gamma
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We have evaluated levels of 6 cytokines in sera of 35 patients of kala azar (KA), 29 post kala azar dermal leishmaniasis (PKDL), and 18 healthy controls using cytometric bead array technology. Results indicated significantly high levels of interferon gamma (IFN-gamma), interleukin (IL)-10, and IL-6 during active KA, white tumor necrosis factor alpha (TNF-alpha), IL-2, and IL-4 were minimal. Serum level of cytokines in PKDL was comparable to the controls white TNF-alpha was significantly elevated compared to KA or control. At post-treatment stage, KA patients showed a significant decrement in the levels of IFN-gamma, IL-10, and IL-6; however, IL-6 remained significantly elevated above control levels. Further, comparison of cytokine levels in children and adults revealed elevated level of IL-10 in pediatric cases. SAG unresponsive cases showed significantly elevated levels of IFN-gamma in comparison with the responsive cases. The results depict that type1 response is not depressed during active KA and suggest the possibility that unresponsiveness to type1 stimuli may prevail. (c) 2006 Elsevier Inc. All rights reserved.
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