In order to explain the pathogenesis of postburn internal organ injury
(OI) and multiple organ failure (MOF), serum TNF activity was measure
d by biological assay in 24 severely burned patients. Parameters relat
ed to internal organ functions were simultaneously measured, The resul
ts showed an obvious increase in serum TNF activity accompanied by inc
reased serum myocardial and hepatic enzymes, plasma lactate and aggreg
ations of WBC in internal organ tissues. Serum protein levels decrease
d substantially. These changes were more marked in patients suffering
from both OI and MOF. It is suggested that large amounts of TNF are pr
oduced postburn and might have an important role in the development of
OI and MOF