The effect of immunotherapy on interleukin-1 and tumor necrosis factor production of monocytes in asthmatic children.
A longitudinal study was conducted to determine the pathogenesis and effect of immunotherapy (IT) on monocyte function. Production of interleukin-1 (IL-1) and tumor necrosis factor (TNF) by peripheral blood monocytes in 31 asthmatic children before and one year after IT was compared. Twenty-two children completed the treatment course, and 13 age-matched healthy children served as controls. Adherent monocytes were isolated and stimulated with either crude mite extract of Dermatophagoid farinae (Df) for 7 days or lipopolysaccharide (LPS) for 3 days. The amount of TNF and IL-1 in culture supernatant was quantified by TNF and IL-1 enzyme-linked immunosorbent assay (ELISA) kits, respectively. The LPS-stimulated TNF production in patients was not different before or after IT (245.8 +/- 110.9 vs. 213.3 +/- 161.6 pg/0.1 ml, p +/- 0.202), but was significantly higher than the control (66.7 +/- 42.7 pg/0.1 ml; p less than 0.0001). The LPS-stimulated IL-1 production was similar among the three groups. When stimulated with Df antigen, monocytes from asthmatic patients produced a greater amount of TNF and IL-1 than did those from the control (p less than 0.001). Furthermore, although the production of TNF decreased after successful IT (360.2 +/- 181.6 vs 243.9 +/- 189.1 pg/0.1 ml, p less than 0.05), the production of IL-1 did not change (679.9 +/- 254.1 vs. 534.8 +/- 257.6 pg/0.1 ml, p greater than 0.05). Thus, repeated long-term administration of allergen (IT) was able to suppress specifically the TNF, but not IL-1 production of monocytes.(ABSTRACT TRUNCATED AT 250 WORDS)
Wang
J Y
JY
Department of Pediatrics, College of Medicine, National Cheng-Kung University Tainan, Taiwan, Republic of China.
Lei
H Y
HY
Hsieh
K H
KH
D000818:Animals; D001249:Asthma / Q000378:metabolism* / Q000628:therapy; D002648:Child; D006801:Humans; D007167:Immunotherapy; D007375:Interleukin-1 / Q000096:biosynthesis*; D007700:Kinetics; D008070:Lipopolysaccharides; D008925:Mites / Q000737:chemistry; D009000:Monocytes / Q000378:metabolism*; D014020:Tissue Extracts / Q000494:pharmacology; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis*
D007375:Interleukin-1; D008070:Lipopolysaccharides; D014020:Tissue Extracts; D014409:Tumor Necrosis Factor-alpha