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    The role of indoleamine 2, 3 dioxygenase in regulating host immunity to leishmania infection

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    Authors
    Makala, Levi HC
    Issue Date
    2012-01-9
    URI
    http://hdl.handle.net/10675.2/700
    
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    Abstract
    Pathogen persistence in immune-competent hosts represents an immunological paradox. Increasing evidence suggests that some pathogens, such as, Leishmania major (L. major) have evolved strategies and mechanisms that actively suppress host adaptive immunity. If this notion is correct conventional vaccination therapies may be ineffective in enhancing host immunity, unless natural processes that suppress host immunity are also targeted therapeutically. The key problem is that the basis of pathogen persistence in immune-competent individuals is unknown, despite decades of intense research. This fact, coupled with poor health care and a dearth of effective treatments means that these diseases will remain a scourge on humans unless a better understanding of why the immune system tolerates such infections emerges from research. Indoleamine 2,3-dioxygenase (IDO) has been shown to act as a molecular switch regulating host responses, and IDO inhibitor drugs shown to possess potential in enhancing host immunity to established leishmania infections. It is hoped that this review will help stimulate and help generate critical new knowledge pertaining to the IDO mechanism and how to exploit it to suppress T cell mediated immunity, thus offer an innovative approach to studying the basis of chronic leishmania infection in mice.
    Citation
    J Biomed Sci. 2012 Jan 9; 19(1):5
    ae974a485f413a2113503eed53cd6c53
    10.1186/1423-0127-19-5
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    Department of Pediatrics: Faculty Research and Presentations

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