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Chemokines in tuberculosis: The good, the bad and the ugly

Identifieur interne : 003967 ( Main/Exploration ); précédent : 003966; suivant : 003968

Chemokines in tuberculosis: The good, the bad and the ugly

Auteurs : Leticia Monin [États-Unis] ; Shabaana A. Khader [États-Unis]

Source :

RBID : PMC:4314384

Descripteurs français

English descriptors

Abstract

Mycobacterium tuberculosis (Mtb) infects about one third of the world’s population, with a majority of infected individuals exhibiting latent asymptomatic infection, while 5–10% of infected individuals progress to active pulmonary disease. Research in the past two decades has elucidated critical host immune mechanisms that mediate Mtb control. Among these, chemokines have been associated with numerous key processes that lead to Mtb containment, from recruitment of myeloid cells into the lung to activation of adaptive immunity, formation of protective granulomas and vaccine recall responses. However, imbalances in several key chemokine mediators can alter the delicate balance of cytokines and cellular responses that promote mycobacterial containment, instead precipitating terminal tissue destruction and spread of Mtb infection. In this review, we will describe recent insights in the involvement of chemokines in host responses to Mtb infection and Mtb containment (the good), chemokines contributing to inflammation during TB (the bad), and the role of chemokines in driving cavitation and lung pathology (the ugly).


Url:
DOI: 10.1016/j.smim.2014.09.004
PubMed: 25444549
PubMed Central: 4314384


Affiliations:


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Le document en format XML

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<italic>Mycobacterium tuberculosis</italic>
(
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) infects about one third of the world’s population, with a majority of infected individuals exhibiting latent asymptomatic infection, while 5–10% of infected individuals progress to active pulmonary disease. Research in the past two decades has elucidated critical host immune mechanisms that mediate
<italic>Mtb</italic>
control. Among these, chemokines have been associated with numerous key processes that lead to
<italic>Mtb</italic>
containment, from recruitment of myeloid cells into the lung to activation of adaptive immunity, formation of protective granulomas and vaccine recall responses. However, imbalances in several key chemokine mediators can alter the delicate balance of cytokines and cellular responses that promote mycobacterial containment, instead precipitating terminal tissue destruction and spread of
<italic>Mtb</italic>
infection. In this review, we will describe recent insights in the involvement of chemokines in host responses to
<italic>Mtb</italic>
infection and
<italic>Mtb</italic>
containment (the good), chemokines contributing to inflammation during TB (the bad), and the role of chemokines in driving cavitation and lung pathology (the ugly).</p>
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