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Human T lymphotropic virus infection and HTLV-I-associated myelopathy. Yasuto ITOYAMA 1 1Department of Neurology, Neurological Institute, Kyushu University pp.766-772
Published Date 1987/10/10
DOI https://doi.org/10.11477/mf.1431905926
  • Abstract
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 Human T lymphotropic virus (HTLV)-I is a causative retrovirus of the adult T cell leukemia (ATL). Recently, a new clinical entity of HTLV-I associated myelopathy (HAM) was proposed. This disease is characterised clinically by a chronic, progressive spastic paraparesis, and serologically by a high antibody titer to HTLV-I in the sera and CSF. However, the role of HTLV-I on the pathogenesis of this disease is unknown.

 In this article, we review neurological and neuropathological features and lymphocyte abnormalities in ATL as well as in the acquired immunodeficiency syndrome (AIDS) which is also caused by a human retrovirus, human immunodeficiency virus (HIV), in comparison with HAM. In AIDS patients who are suffered from severe immunodeficiency, a progressive dementia is a cardinal neurological symptom and sign, which is not related to opportunistic infections in CNS. In ATL, CD 4+ leukemic cells infiltrate into the meninges and CNS parenchyma, and result in various neurological symptoms and signs. Although there were a few immunological studies on HAM, our study on the peripheral blood lymphocyte subset showed a decrease in CD 8+ cells, and an increase in OKDR+ cells, IL-2R+ cells and CD 4/CD 8 ratio in HAM patients. These data suggest that activated T cells are increased in HAM.


Copyright © 1987, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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