TY - JOUR
T1 - A Role of Cytokines in OK-432 Injection Therapy for Cystic Lymphangioma
T2 - An Approach to the Mechanism
AU - Fujino, Akihiro
AU - Moriya, Yoichiro
AU - Morikawa, Yasuhide
AU - Hoshino, Ken
AU - Watanabe, Toshihiko
AU - Shimojima, Naoki
AU - Kitajima, Masaki
PY - 2003/12
Y1 - 2003/12
N2 - Purpose: This study examines cytokine levels of aspirates from cystic lymphangiomas after injection of OK-432 and over the course of several weeks to better understand the process of tumor regression. Methods: Fluids aspirated from lymphangioma cysts of 3 patients were collected sequentially before and after OK-432 injection. Mononuclear cells (MNCs) were separated and cultured with or without OK-432. Vascular endothelial growth factor (VEGF), soluble VEGF receptor 1 (sVEGFR1), sVEGFR2, transforming growth factor beta-1 (TGF-β1), interleukin (IL)-6, IL-8, IL-12+p40, tumor necrosis factor alpha (TNF-α) and interferon gamma (IFN-γ) levels in the supernatants of the aspirates and the culture supernatants of MNCs were then measured by ELISA. Results: The aspirates exhibited a marked elevation in IL-6, IL-8, VEGF, and TGF-β1 levels for a few weeks after the OK-432 injection. IL-6, IL-8, IL-12+p40, TNF-α, and IFN-γ levels were elevated in the culture supernatants of the MNC cultured with OK-432 for up to 9 days. All the tumors regressed significantly, with sclerotic change, within 3 months after OK-432 Injection. Conclusions: Cytokine production is maintained for a few weeks after OK-432 injection. Fibrotic changes may be another main mechanism in tumor regression in addition to cytotoxic effects on lymphangioma cells. A close relationship between cytokines from intracystic cells and lymphangioma cells is suggested.
AB - Purpose: This study examines cytokine levels of aspirates from cystic lymphangiomas after injection of OK-432 and over the course of several weeks to better understand the process of tumor regression. Methods: Fluids aspirated from lymphangioma cysts of 3 patients were collected sequentially before and after OK-432 injection. Mononuclear cells (MNCs) were separated and cultured with or without OK-432. Vascular endothelial growth factor (VEGF), soluble VEGF receptor 1 (sVEGFR1), sVEGFR2, transforming growth factor beta-1 (TGF-β1), interleukin (IL)-6, IL-8, IL-12+p40, tumor necrosis factor alpha (TNF-α) and interferon gamma (IFN-γ) levels in the supernatants of the aspirates and the culture supernatants of MNCs were then measured by ELISA. Results: The aspirates exhibited a marked elevation in IL-6, IL-8, VEGF, and TGF-β1 levels for a few weeks after the OK-432 injection. IL-6, IL-8, IL-12+p40, TNF-α, and IFN-γ levels were elevated in the culture supernatants of the MNC cultured with OK-432 for up to 9 days. All the tumors regressed significantly, with sclerotic change, within 3 months after OK-432 Injection. Conclusions: Cytokine production is maintained for a few weeks after OK-432 injection. Fibrotic changes may be another main mechanism in tumor regression in addition to cytotoxic effects on lymphangioma cells. A close relationship between cytokines from intracystic cells and lymphangioma cells is suggested.
KW - Cytotoxicity
KW - Fibrotic change
KW - Lymphangioma
KW - OK-432
KW - Transforming growth factor beta-1
KW - Vascular endothelial growth factor
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U2 - 10.1016/j.jpedsurg.2003.08.041
DO - 10.1016/j.jpedsurg.2003.08.041
M3 - Article
C2 - 14666473
AN - SCOPUS:0344738893
SN - 0022-3468
VL - 38
SP - 1806
EP - 1809
JO - Journal of Pediatric Surgery
JF - Journal of Pediatric Surgery
IS - 12
ER -