Immunodeficiency and IL-6 production by peripheral blood monocytes in multicentric Castleman's disease.
To study the pathogenesis of multicentric Castleman's disease (MCD), IL-6 producing cells and immune function were investigated in four MCD patients. The expression of IL-6 mRNA in one MCD lymph node was analysed by in situ hybridization. IL-6 mRNA expressing cells were scattered in the interfollicular areas and did not resemble plasma cells. Spontaneous IL-6 production was detected in the culture supernatants of peripheral blood mononuclear cells (PBMNC) from four patients. The IL-6 producing cells among the PBMNC were found to be monocytes by both in situ hybridization and immunohistochemistry. We evaluated immune function in four MCD patients. These studies show: (1) a negative PPD skin test in 3/4 patients, (2) decreased IL-2 production in 3/4 patients, (3) decreased T cell colony formation in 3/4 patients, (4) decreased NK activity and NK cell number in 2/4 patients, (5) increased soluble IL-2 receptor in 4/4 patients, and (6) decreased CD4/CD8 ratio in 3/4 patients. These results show that MCD resembles, in several ways, acquired immunodeficiency syndrome (AIDS).
Ishiyama
T
T
Department of Haematology, Showa University School of Medicine, Japan.
Nakamura
S
S
Akimoto
Y
Y
Koike
M
M
Tomoyasu
S
S
Tsuruoka
N
N
Murata
Y
Y
Sato
T
T
Wakabayashi
Y
Y
Chiba
S
S
D000368:Aged; D000369:Aged, 80 and over; D016516:CD4-CD8 Ratio; D005871:Castleman Disease / Q000276:immunology*; D005260:Female; D006801:Humans; D007108:Immune Tolerance / Q000276:immunology*; D017403:In Situ Hybridization; D007375:Interleukin-1 / Q000097:blood; D015850:Interleukin-6 / Q000096:biosynthesis* / Q000097:blood / Q000235:genetics; D007694:Killer Cells, Natural / Q000276:immunology; D008198:Lymph Nodes / Q000276:immunology; D008297:Male; D008875:Middle Aged; D009000:Monocytes / Q000276:immunology*; D010835:Phytohemagglutinins / Q000276:immunology; D012333:RNA, Messenger / Q000032:analysis; D015375:Receptors, Interleukin-2 / Q000032:analysis; D013601:T-Lymphocytes / Q000276:immunology
D007375:Interleukin-1; D015850:Interleukin-6; D010835:Phytohemagglutinins; D012333:RNA, Messenger; D015375:Receptors, Interleukin-2