Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6124313 | Journal of Infection and Chemotherapy | 2009 | 4 Pages |
Abstract
Subpopulations of regular and atypical lymphocytes in the peripheral blood of a 24-year-old man with an infectious mononucleosis (IM)-like syndrome associated with hepatitis A virus (HAV) infection were analyzed. The ratio of CD4+ to CD8+ cells was in the normal range (1.19 and 1.23 in the regular and atypical lymphocytes, respectively), with no increase in CD8+ cells. The percentage of CD8+/CD11b- cells was not increased in the atypical lymphocytes. However, CD45RO+ was expressed on 86.3% of CD4+ atypical lymphocytes. The present data suggest that atypical lymphocytes expressing CD4+/CD45RO+ may play the role of helper T cells in the immune system in the development of IM-like syndrome associated with HAV infection.
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Authors
Hidehiro Watanabe, Hideaki Sekine, Tomonori Uruma, Sai Nagasaki, Tokuroh Tsunoda, Yutaka Machida, Kentaro Kobayashi, Hisashi Igarashi,