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Evidence that Tumour Necrosis Induced by Aminated β1‐3D Polyglucose is Mediated by a Concerted Action of Local and Systemic Cytokines
Author(s) -
SELJELID R.,
FIGENSCHAU Y.,
BØGWALD J.,
RASMUSSEN L. T.,
AUSTGULEN R
Publication year - 1989
Publication title -
scandinavian journal of immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.934
H-Index - 88
eISSN - 1365-3083
pISSN - 0300-9475
DOI - 10.1111/j.1365-3083.1989.tb02477.x
Subject(s) - action (physics) , necrosis , tumor necrosis factor alpha , immunology , chemistry , medicine , cancer research , biology , pathology , physics , quantum mechanics
Aminated β1‐3D polyglucose (AG) causes regression of Meth A sarcoma in syngeneic mice when injected systemically on day 7 after tumour inoculation. AG does not concentrate in the tumour, but distributes throughout the body. AG treatment cases release of large amounts of interleukin 1 (IL‐1) both in vivo and in macrophage cultures in vitro AG is a weak stimulus for tumour necrosis factor (TNF) release both in vitro and in vivo. However, tumour tissue and sera from untreated mice on days 3 and 7 after inoculation contain significant amounts of TNF, whereas tumour tissue and sera on day 14 contain insignificant amounts of TNF. This correlates exactly with the sensitivity to AG treatment IL‐1, and TNF when injected locally cause reduction in tumour blood circulation and also shrinkage of the tumour. All these facts taken together indicate that the tumour circulatory failure and necrosis induced by AG are mediated by local TNF—unrelated to the treatment—potentiated by systemic cytokines triggered by the AG.