Related Experiment Videos
Peripheral blood monocyte/macrophages and serum tumor necrosis factor in Kawasaki disease
S Furukawa1, T Matsubara, K Jujoh
1Department of Pediatrics, Juntendo University School of Medicine, Tokyo, Japan.
Abstract:
We analyzed the populations of peripheral blood monocyte/macrophages in 27 patients using a fluorescence-activated cell sorter, and investigated the possibility, in another 30 patients, that tumor necrosis factor (TNF) might be detectable in serum during the acute phase of Kawasaki disease (KD). Percentages of peripheral blood monocyte/macrophages among mononuclear cells and serum TNF levels were both seen to increase during the acute phase of the illness in patients with KD. The percentage of TNF positive cases in KD patients with coronary involvement was higher than that of patients without coronary involvement. These results suggest the possibility that immunological activation, accompanied by the secretion of TNF from monocyte/macrophages, is an important predisposing condition for the exacerbation of vascular damage in KD.
Insights
In Kawasaki disease (KD), increased monocyte/macrophage populations and tumor necrosis factor (TNF) during the acute phase correlate with coronary involvement, suggesting a role in vascular damage.
Area of Science:
- Immunology
- Pediatrics
- Cardiology
Background:
- Kawasaki disease (KD) is an acute febrile illness primarily affecting young children.
- Vascular inflammation, particularly in the coronary arteries, is a significant complication of KD.
- The role of specific immune cells and inflammatory cytokines in KD pathogenesis remains under investigation.
Purpose of the Study:
- To analyze peripheral blood monocyte/macrophage populations in KD patients.
- To investigate the presence of serum tumor necrosis factor (TNF) during the acute phase of KD.
- To explore the association between immune markers, TNF, and coronary artery abnormalities in KD.
Main Methods:
- Peripheral blood mononuclear cells were analyzed for monocyte/macrophage populations using fluorescence-activated cell sorting.
- Serum samples from KD patients during the acute phase were tested for the presence of TNF.
- Correlation analysis was performed between immune cell percentages, serum TNF levels, and the presence or absence of coronary artery involvement.
Main Results:
- A significant increase in the percentage of peripheral blood monocyte/macrophages was observed during the acute phase of KD.
- Serum TNF levels were also elevated during the acute phase of KD.
- The incidence of detectable serum TNF was higher in KD patients with coronary involvement compared to those without.
Conclusions:
- Immunological activation, involving monocyte/macrophages and TNF secretion, appears to play a crucial role in the acute phase of Kawasaki disease.
- Elevated TNF levels and monocyte/macrophage activation may predispose to the exacerbation of vascular damage, including coronary arteritis.
- These findings highlight potential therapeutic targets for preventing coronary complications in KD.