PMID- 16540459 OWN - NLM STAT- MEDLINE DCOM- 20060714 LR - 20061115 IS - 1355-0284 (Print) IS - 1355-0284 (Linking) VI - 11 Suppl 3 DP - 2005 TI - Central nervous system opportunistic infections in developed countries in the highly active antiretroviral therapy era. PG - 72-82 AB - A marked decrease in incidence has been observed for most central nervous system (CNS) opportunistic infections (OIs) after the use of highly active antiretroviral therapy (HAART) in developed countries. However, the spectrum of these OIs in acquired immunodeficiency syndrome (AIDS) patients has remained almost unchanged. CNS toxoplasmosis, cryptococcosis, tuberculosis, and progressive multifocal leukoencephalopathy (PML) remain the most frequent ones. Primary CNS lymphoma should be included in the differential diagnosis of all cases with focal lesions. Final diagnosis is currently made by combining neuroimaging techniques (single-photon emission computed tomography [SPECT], positron emission tomography [PET], magnetic resonance imaging [MRI] and/or computed tomography [CT] scan) and molecular studies of cerebrospinal fluid (CSF) and therapeutical response. Stereotactic biopsy should only be performed in the case of atypical lesions or nonresponse to recommended treatments. After treatment of the acute phase, lifelong maintenance therapy is necessary to prevent OI recurrences. Once HAART is initiated, some patients can develop a clinical worsening of some CNS OIs with or without atypical neuroimaging manifestations. This paradoxical worsening is known as the immune reconstitution inflammatory syndrome (IRIS) and it results from reconstitution of the immune system's ability to recognize pathogens/antigens in patients with prior OIs and low CD4+ T-cell counts. In this context, IRIS can be seen in patients with CNS cryptococcosis, tuberculosis, or PML. On the other hand, HAART-induced immune reconstitution can improve the prognosis of some untreatable diseases such as PML, and can allow maintenance therapy of some CNS OI to be safely discontinued in patients with high and sustained CD4+ T-cell response. FAU - Manzardo, Christian AU - Manzardo C AD - Infectious Diseases Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi i Sunyer, University of Barcelona, Barcelona, Spain. FAU - Del Mar Ortega, Maria AU - Del Mar Ortega M FAU - Sued, Omar AU - Sued O FAU - Garcia, Felipe AU - Garcia F FAU - Moreno, Asuncion AU - Moreno A FAU - Miro, Jose M AU - Miro JM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - United States TA - J Neurovirol JT - Journal of neurovirology JID - 9508123 SB - IM MH - AIDS-Related Opportunistic Infections/diagnosis/epidemiology/*etiology MH - *Antiretroviral Therapy, Highly Active MH - Central Nervous System Infections/diagnosis/epidemiology/*etiology/microbiology MH - Developed Countries MH - HIV Infections/*complications/drug therapy MH - Humans RF - 44 EDAT- 2006/03/17 09:00 MHDA- 2006/07/15 09:00 CRDT- 2006/03/17 09:00 PHST- 2006/03/17 09:00 [pubmed] PHST- 2006/07/15 09:00 [medline] PHST- 2006/03/17 09:00 [entrez] AID - N761Q03024X421R7 [pii] AID - 10.1080/13550280500513846 [doi] PST - ppublish SO - J Neurovirol. 2005;11 Suppl 3:72-82. doi: 10.1080/13550280500513846.