Cytokine adsorptive property of various adsorbents in immunoadsorption columns and a newly developed adsorbent: an in vitro study.
OBJECTIVE
Cytokines play important roles in the pathophysiology of systemic inflammatory response syndrome (SIRS) and sepsis. Therefore, some effective measures to remove cytokines from the bloodstream could be effective in the treatment of SIRS and sepsis. The aim of this study was to evaluate the cytokine adsorptive property of various adsorbents for the purpose of the development of new selective cytokine adsorption columns.


METHODS
The cytokine adsorptive property of adsorbent in a CF-X column, which consists of cellulose beads cross-linked with hexamethylene-di-isocyanate, was compared with those of various adsorbents in currently available immunoadsorption columns, such as Immusorba TR, Immusorba PH, Selesorb, and Lixelle, in vitro batchwise test using patients' plasma. A newly developed adsorbent, MPCF-X, which was modified by coating the surface of the adsorbent in CF-X with 2-methacryloyloxyethyl phosphorylcholine (MPC), was also tested for its cytokine adsorptive property.


RESULTS
The adsorbent in CF-X showed a significantly higher adsorption rate for TNF-alpha, interleukin (IL)-6 and IL-10 compared with other adsorbents (p < 0.05). Adsorbent in Lixelle showed good affinity to TNF-alpha and IL-8. Especially, the adsorbent in CF-X almost completely removed TNF-alpha, whereas it also had considerable affinity to normal IgG. MPCF-X showed decreased affinity to IgG with considerable adsorptive properties to cytokines.


CONCLUSIONS
Selective cytokine adsorption columns could be developed with improvement of currently available adsorbents. Such a new selective cytokine adsorption column could be clinically applied for the treatment of SIRS/sepsis.
Oda
Shigeto
S
Department of Emergency and Critical Care Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan. odas@ho.chiba-u.ac.jp
Hirasawa
Hiroyuki
H
Shiga
Hidetoshi
H
Nakanishi
Kazuya
K
Matsuda
Ken-Ichi
K
Nakamura
Masataka
M
Ikeda
Hiroyuki
H
Sakai
Masamune
M
D000327:Adsorption; D000368:Aged; D000369:Aged, 80 and over; D016207:Cytokines / Q000097:blood / Q000302:isolation & purification*; D006464:Hemoperfusion / Q000379:methods*; D006801:Humans; D007074:Immunoglobulin G / Q000302:isolation & purification; D007163:Immunosorbent Techniques / Q000295:instrumentation*; D007378:Interleukins / Q000302:isolation & purification; D008297:Male; D012709:Serum Albumin / Q000302:isolation & purification; D012772:Shock, Septic / Q000097:blood; D014409:Tumor Necrosis Factor-alpha / Q000302:isolation & purification
D016207:Cytokines; D007074:Immunoglobulin G; D007378:Interleukins; D012709:Serum Albumin; D014409:Tumor Necrosis Factor-alpha