Th17 cells in human rheumatoid arthritis

Research output: Contribution to journalReview article

3 Citations (Scopus)

Abstract

Many autoimmune diseases, such as rheumatoid arthritis (RA), have been thought as Th1-mediated diseases. However, recent studies demonstrated critical roles of IL-17, which is produced by a newly identifed subset of helper CD4T cells, Th17, in the development of murine models of autoimmune diseases. In addition, many biological functions of IL-17 fit very well with the pathology of RA joints. However, despite the presence of some reports detecting IL-17 in RA joints, the prevalence of Th17 cells in human RA had been largely unknown. Therefore, we analyzed Th17 cells in RA by intracellular staining methods. We found the frequency of IL-17-producing T cells was not increased in RA and was not correlated with disease activity of RA. Surprisingly, the frequency of CD4 T cells capable of IL-17 was decreased in the joints compared with PBL in each individual, whereas Th1 cells predominantly infitrated in the joints. Taken together with the results of other reports measuring IL-17 production in RA, it seems premature to conclude that IL-17 is abundantly produced in RA joints. Further investigation on the involvement of Th17/IL-17 in human RA is required.

Original languageEnglish
Pages (from-to)249-255
Number of pages7
JournalJapanese Journal of Clinical Immunology
Volume32
Issue number4
DOIs
Publication statusPublished - Dec 1 2009

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Th17 Cells
Interleukin-17
Rheumatoid Arthritis
Joints
Autoimmune Diseases
T-Lymphocytes
Th1 Cells
Helper-Inducer T-Lymphocytes
Pathology
Staining and Labeling

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology

Cite this

Th17 cells in human rheumatoid arthritis. / Yamada, Hisakata.

In: Japanese Journal of Clinical Immunology, Vol. 32, No. 4, 01.12.2009, p. 249-255.

Research output: Contribution to journalReview article

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