| Plasma G-CSF and GM-CSF Concentration and Amount of Their
Receptors on the Granulocyte in Kawasaki Disease |
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Young-Kyoung Yoo, Gibum Lee, Hyun-Hee Kim, Soo-Young Kim, You-Jeong Kim, Wonbae Lee |
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Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea |
| 가와사키병 환아의 혈장내 G-CSF와 GM-CSF 농도 및과립구에서의 이들 수용체의 발현 변화 |
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유영경, 이기범, 김현희, 김소영, 김유정, 이원배 |
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가톨릭대학교 의과대학 소아과학교실 |
Correspondence:
Wonbae Lee, Email: lwb@hfh.cuk.ac.kr
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| Abstract |
Purpose
: This study aimed to demonstrate the possible pathogenesis of granulopoiesis in patients of Kawasaki disease(KD) using quantitative analysis of G-CSF, GM-CSF and their CSFr.
Methods
: The plasma levels of G-CSF, GM-CSF, G-CSFr and GM-CSFr were studied in 14 patients in the acute phase of KD; 13 children with normal peripheral white blood cell counts were used as the normal control group. The plasma concentration of G-CSF, GM-CSF were analyzed by ELISA. The G-CSFr and GM-CSFr on the peripheral granulocytes were analyzed by a quantitative flow cytometric assay and QuantiBRITE, and the quantitative changes of receptors which did not combine with G-CSF and GM-CSF were measured.
Results
: The total number of leukocytes in KD was similar to normal control group, but the leukocytes increased according to the number of neutrophils. The plasma concentration of G-CSF were decreased similar to normal control group(P=0.133), but that of GM-CSF decreased more than the normal control group(P=0.227). The quantity of G-CSFr, GM-CSFr were revealed to be no less than the normal control(P=0.721, P=0.912). After incubation with excessive G-CSF, the expressed G-CSFr on the neutrophils were decreased in both groups(P=0.554). The quantities of expressions of GM- CSFr on the neutrophil after incubation with the excessive GM-CSF were always increased in both groups(P=0.255). The amount of GM-CSFr of neutrophils are in proportion to total white blood cells (r=0.788, P=0.035), but it wasn't in the case of KD(P=0.644).
Conclusion
: The leukocytosis in KD that mediated by increasing neutrophil was not correlated with the plasma concentrations of G-CSF and GM-CSF, and the amount of expression of G-CSFr and GM-CSFr on granulocyte. It is possible that the reduction of concentration of GM-CSF results by increasing the active GM-CSFr. |
| Key Words:
Granulocyte-colony stimulating factor(G-CSF), Granulocyte macrophage-colony stimulating factor(GM-CSF), G-CSF receptor, GM-CSF receptor, Kawasaki disease |
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