Mechanisms of Host Protection and Pathogen Evasion of Immune Response During Tuberculosis
An integrated response of the host is essential in health and disease. Upon microbial exposure, infected hosts strictly regulate immune responses to both contain pathogen dissemination and modulate immunopathology-associated effects, thus preventing mortality. In addition to a variety of molecules, such potent responses are kept under tight control by a class of anti-inflammatory eicosanoids, the lipoxins. Lipoxins are induced following exposure to several infectious agents and can function as immuno-modulatory molecules. A number of observations made in animal models of infection and human studies indicate that such lipid mediators play a critical role in controlling early as well as chronic immune responses. This chapter summarizes the role of cytokines and lipoxins in regulating innate immune responses to a major human pathogen, Mycobaterium tuberculosis.
KeywordsTuberculosis Bacillus Glucocorticoid Smoke Microbe
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