Immune reconstitution inflammatory syndrome (IRIS) associated with Mycobacterium tuberculosis (TB) infection. a) In healthy individuals in response to.

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Presentation transcript:

Immune reconstitution inflammatory syndrome (IRIS) associated with Mycobacterium tuberculosis (TB) infection. a) In healthy individuals in response to M. tuberculosis infection, macrophages and dendritic cells induce polarising cytokines including interleuk... Immune reconstitution inflammatory syndrome (IRIS) associated with Mycobacterium tuberculosis (TB) infection. a) In healthy individuals in response to M. tuberculosis infection, macrophages and dendritic cells induce polarising cytokines including interleukin (IL)-6, IL-12 and IL-23. These cytokines polarise T-cells which in turn activate macrophages to kill M. tuberculosis. b) In HIV-infected patients there is no M. tuberculosis control because of lack of effective T-cell responses. IRIS develops in HIV-infected patients with pre-antiretroviral therapy (ART) risk factors, such as low CD4+ cells, high HIV viral load, high M. tuberculosis antigen load and a short interval between M. tuberculosis treatment and ART. A variety of innate and adaptive immune cells, pro-inflammatory cytokines, chemokines and matrix metalloproteinases (MMPs) are involved in the exaggerated inflammatory response seen in IRIS. IFN: interferon; Th: T-helper cell; NK: natural killer; TLR: Toll-like receptor; CXCL: C-X-C motif chemokine ligand; TNF: tumour necrosis factor; CRP: C-reactive protein. Radha Gopal et al. Eur Respir Rev 2017;26:160042 ©2017 by European Respiratory Society