Understanding and intervening in HIV-associated tuberculosis

Abstract

HIV-associated tuberculosis can present as extremes, ranging from acute life-threatening disseminated disease to occult asymptomatic infection. Both ends of this spectrum have distinct pathological correlates and require specific diagnostic and treatment approaches. Novel therapeutics, targeting both pathogen and host, are needed to augment pathogen clearance. In latent tuberculosis infection, enhancement of immune activation could be desirable. Antiretroviral therapy augments the beneficial effects of antitubercular therapy. However, in the context of high bacillary burden, antiretroviral therapy can also result in pathology (tuberculosis immune reconstitution inflammatory syndrome). In the immune reconstituting patient, modulation of immune activation controls tissue destruction. Interventions should also be appropriate and sustainable within the programmatic setting.

Keywords: HIV; diagnostics; host-directed therapies; immune modulation; immune reconstitution inflammatory syndrome; latent tuberculosis infection; multibacillary; paucibacillary; tuberculosis.