PMID- 22432669 OWN - NLM STAT- MEDLINE DCOM- 20120727 LR - 20190902 IS - 1326-5377 (Electronic) IS - 0025-729X (Linking) VI - 196 IP - 5 DP - 2012 Mar 19 TI - Immune reconstitution inflammatory syndrome: immune restoration disease 20 years on. PG - 318-21 AB - Restoration of immune responses against opportunistic pathogens after commencing antiretroviral therapy (ART) may cause immune restoration disease (IRD) in about 10%-40% of HIV patients with low CD4(+) T-cell counts and usually presents clinically as a type of immune reconstitution inflammatory syndrome (IRIS). IRIS may be associated with many different opportunistic pathogens, but types associated with Mycobacterium tuberculosis, BCG, cryptococci, JC polyomavirus (the cause of progressive multifocal leukoencephalopathy [PML]), hepatitis C virus and hepatitis B virus infection are the most informative about disease pathogenesis and management. A CD4(+) T-cell count of < 50/muL and a high pathogen load are the most commonly identified risk factors for IRIS. Recovery of pathogen-specific T-cell responses and perturbations of innate immune responses before and after ART appear to cause immunopathological abnormality in tissues infected by the pathogen. Prevention of IRIS may be influenced by the timing of ART: The risk of tuberculosis (TB)-associated-IRIS can be reduced by commencing ART after 8 weeks of TB treatment, but rates of AIDS or death are lower if ART is commenced during the first 4 weeks of TB treatment. Outcomes for patients with HIV and treated cryptococcal or TB meningitis may be improved by deferring ART until the opportunistic infection is fully suppressed, but data are inadequate. As ART is currently the only effective treatment for PML in patients with HIV, PML-associated IRIS cannot be prevented by manipulating the timing of ART. A greater understanding of the immunopathogenesis of IRIS may lead to targeted therapies. FAU - French, Martyn A H AU - French MA AD - School of Pathology and Laboratory Medicine, University of Western Australia, Perth, WA, Australia. martyn.french@uwa.edu.au LA - eng PT - Journal Article PL - Australia TA - Med J Aust JT - The Medical journal of Australia JID - 0400714 RN - 0 (Anti-Retroviral Agents) SB - IM MH - AIDS-Related Opportunistic Infections/*etiology MH - Anti-Retroviral Agents/*adverse effects/therapeutic use MH - CD4 Lymphocyte Count MH - Cryptococcosis/etiology/therapy MH - HIV Infections/complications/*drug therapy/immunology MH - Hepatitis B/etiology MH - Hepatitis C/etiology MH - Humans MH - *Immune Reconstitution Inflammatory Syndrome/etiology/therapy MH - Leukoencephalopathy, Progressive Multifocal/etiology MH - Tuberculosis/etiology/therapy EDAT- 2012/03/22 06:00 MHDA- 2012/07/28 06:00 CRDT- 2012/03/22 06:00 PHST- 2012/01/13 00:00 [received] PHST- 2012/02/20 00:00 [accepted] PHST- 2012/03/22 06:00 [entrez] PHST- 2012/03/22 06:00 [pubmed] PHST- 2012/07/28 06:00 [medline] AID - fre10089_fm [pii] AID - 10.5694/mja12.10089 [doi] PST - ppublish SO - Med J Aust. 2012 Mar 19;196(5):318-21. doi: 10.5694/mja12.10089.