PMID- 21377277 OWN - NLM STAT- MEDLINE DCOM- 20110824 LR - 20151119 IS - 1618-0631 (Electronic) IS - 0344-0338 (Linking) VI - 207 IP - 4 DP - 2011 Apr 15 TI - Immunopathological characteristics of immune reconstitution inflammatory syndrome caused by Mycobacterium parascrofulaceum infection in a patient with AIDS. PG - 262-70 LID - 10.1016/j.prp.2011.01.003 [doi] AB - Immune reconstitution inflammatory syndrome (IRIS) caused by mycobacterium in patients with AIDS is often experienced in clinical practice. There is, however, a paucity of data documenting the histopathological findings and the pathogenesis. We determined the immunopathological characteristics of IRIS associated with Mycobacterium parascrofulaceum infection in an AIDS patient. A patient presented with pulmonary lymphadenitis and involvement of the pulmonary lingular segment. Portions of the involved lymph nodes and lung were excised, and the immunological properties were analyzed by immunohistochemical assays. The histological characteristics of lymph nodes showed a caseous necrosis. Histopathologically, the pulmonary lesion was composed of exudative and proliferative lesions. CD4(+), CD8(+), CD57(+), and CD25(+)/FoxP3(+) cells were observed in both types of lesions. Clusters of CD20(+) cells and GATA3(+) cells were predominantly observed in exudative lesions, while T-bet(+) cells were dominant in proliferative lesions. ROR-gamma(+) cells were also observed in exudative lesions. These results indicate that the cellular immunity to mycobacteria was recovering in the lung tissue. In M. parascrofulaceum pulmonary infection, the exudative lesion had characteristics of Th2 and Th17-type immunities. In contrast, the proliferative lesion had characteristics of Th-1 type immunity. Our data provide the first evidence to reveal the status of the axis of distinctive immunity in the process of granuloma formation caused by a mycobacterium-related infection. CI - Copyright (c) 2011 Elsevier GmbH. All rights reserved. FAU - Hibiya, Kenji AU - Hibiya K AD - Department of Infectious, Respiratory, and Digestive Medicine, Control and Prevention of Infectious Diseases, Faculty of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa 903-0215, Japan. kenjihibiya@gmail.com FAU - Tateyama, Masao AU - Tateyama M FAU - Teruya, Hiromitsu AU - Teruya H FAU - Nakamura, Hideta AU - Nakamura H FAU - Tasato, Daisuke AU - Tasato D FAU - Kazumi, Yuko AU - Kazumi Y FAU - Hirayasu, Tsuneo AU - Hirayasu T FAU - Tamaki, Yuichiro AU - Tamaki Y FAU - Haranaga, Shusaku AU - Haranaga S FAU - Higa, Futoshi AU - Higa F FAU - Maeda, Shinji AU - Maeda S FAU - Fujita, Jiro AU - Fujita J LA - eng PT - Case Reports PT - Journal Article DEP - 20110304 PL - Germany TA - Pathol Res Pract JT - Pathology, research and practice JID - 7806109 RN - 0 (Antibodies) SB - IM MH - AIDS-Related Opportunistic Infections/*complications/diagnosis MH - Acquired Immunodeficiency Syndrome/*complications/diagnosis MH - Adult MH - Antibodies MH - Antiretroviral Therapy, Highly Active MH - Humans MH - Immune Reconstitution Inflammatory Syndrome/*diagnosis/etiology/immunology MH - Immunohistochemistry MH - Lung/microbiology/pathology MH - Lymph Nodes/microbiology/pathology MH - Lymphatic Diseases/microbiology/pathology MH - Male MH - Mycobacterium Infections, Nontuberculous/*complications/diagnosis MH - Nontuberculous Mycobacteria/*pathogenicity MH - Respiratory Tract Infections/complications/diagnosis MH - Tomography, X-Ray Computed EDAT- 2011/03/08 06:00 MHDA- 2011/08/25 06:00 CRDT- 2011/03/08 06:00 PHST- 2010/07/25 00:00 [received] PHST- 2010/12/21 00:00 [revised] PHST- 2011/01/17 00:00 [accepted] PHST- 2011/03/08 06:00 [entrez] PHST- 2011/03/08 06:00 [pubmed] PHST- 2011/08/25 06:00 [medline] AID - S0344-0338(11)00008-2 [pii] AID - 10.1016/j.prp.2011.01.003 [doi] PST - ppublish SO - Pathol Res Pract. 2011 Apr 15;207(4):262-70. doi: 10.1016/j.prp.2011.01.003. Epub 2011 Mar 4.