Korean J Nephrol.
1999 Sep;18(5):692-699.
Serial Changes in Plasma Cytokine Levels in Hemorrhagic Fever with Renal Syndrome
Abstract
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Hemorrhagic fever with renal syndrome (HFRS) in Korea is caused by 2 serotypes of hantavirus,
Hantaan and Seoul. Even though the number of peripheral CD8' T-lymphocytes is markedly
elevated in the acute phase of HFRS, the pathogenetic role of this phenomena is not clear.
To elucidate the role of cell-mediated immune response in HFRS, we measured concentrations
of cytokines, such as IL-1, IL-2, IL-4, IL-6, IL-10 and IFN-r in plasma samples obtained
from 15 patients (15 men, 20-24 years old) at various phase of illness. Cytokines were
measured by ELISA in plasma samples. The plasma concentration of IL-10 was elevated in 13/15
patients. The median maximum value, during days 4-8, was 23 ng/L (range, 0-70.2). The maximum
values were significantly higher(p=0.005) than the baseline. IL-1 and IL-6 was detected in 6
patients. Other cytokine responses (IL-2, IL-4, IFN-r ) were negligible. There was no
significant correlation between maximum levels of IL-10 and maximum serum concentration of
creatinine (r=0.118, p=0.675), and lowest plate#let count (r=-0.088, p=0.765).
Kinetics of IL-10 were quite similar in HFRS patients with maximum creatinine values >3 mg/dL
and in those with values <3 mg/dL. In conclusion, plasma IL-10 levels, but not IL-2, IL-4 or
INF-r were elevated in acute phase of HFRS, and it suggests that the systemic
immunosuppressive activities of IL-10 might have some pathogenetic role in HFRS.