TY - JOUR
T1 - IL-6, but not TNF-α, increases plasma YKL-40 in human subjects
AU - Nielsen, Anders R
AU - Plomgaard, Peter
AU - Krabbe, Karen S
AU - Johansen, Julia S
AU - Pedersen, Bente K
N1 - Copyright © 2011 Elsevier Ltd. All rights reserved.
PY - 2011/7
Y1 - 2011/7
N2 - Plasma levels of YKL-40 are elevated in patients with systemic infection, inflammatory disorders and cancer. Both monocytes/macrophages, neutrophils, and cancer cells have the capacity to produce YKL-40, but the regulation during the inflammatory response is unknown. To study the possible role of interleukin-6 (IL-6) and tumor necrosis factor (TNF)-α in the regulation of YKL-40 plasma levels, we included healthy men, who received either recombinant human (rh)IL-6 (n=6), rhTNF-α (n=8) or vehicle (n=7) for 3. h. The plasma levels of IL-6 and TNF-α reached ~150 and ~18. pg/ml, respectively, during the infusions. Following the IL-6 infusion, the plasma level of YKL-40 increased from ~30 to ~57. ng/ml (p<0.05) at 24. h, and returned to normal values after 48. h. The plasma level of YKL-40 did not change during TNF-α infusion or infusion of vehicle. These data demonstrate that IL-6, but not TNF-α, has a key-role in the regulation of plasma YKL-40 levels during inflammation.
AB - Plasma levels of YKL-40 are elevated in patients with systemic infection, inflammatory disorders and cancer. Both monocytes/macrophages, neutrophils, and cancer cells have the capacity to produce YKL-40, but the regulation during the inflammatory response is unknown. To study the possible role of interleukin-6 (IL-6) and tumor necrosis factor (TNF)-α in the regulation of YKL-40 plasma levels, we included healthy men, who received either recombinant human (rh)IL-6 (n=6), rhTNF-α (n=8) or vehicle (n=7) for 3. h. The plasma levels of IL-6 and TNF-α reached ~150 and ~18. pg/ml, respectively, during the infusions. Following the IL-6 infusion, the plasma level of YKL-40 increased from ~30 to ~57. ng/ml (p<0.05) at 24. h, and returned to normal values after 48. h. The plasma level of YKL-40 did not change during TNF-α infusion or infusion of vehicle. These data demonstrate that IL-6, but not TNF-α, has a key-role in the regulation of plasma YKL-40 levels during inflammation.
U2 - 10.1016/j.cyto.2011.03.014
DO - 10.1016/j.cyto.2011.03.014
M3 - Journal article
SN - 1043-4666
VL - 55
SP - 152
EP - 155
JO - Cytokine
JF - Cytokine
IS - 1
ER -