Abstract
to approach the relationship between alveolar echinococcosis (AE) pathology and level of sIL-2R,TNF-alpha and IFN-gamma in sera and the significance of cytokines in development of AE. After 23 patients with AE were confirmed by ELISA and ultrasound, their sera were collected and the concentrations of sIL-2R,TNF-alpha and IFN-gamma were detected by double antibody sandwich. Twelve healthy adults served as controls. According to the status of livers of AE patients by ultrasound scanning, they were divided into 4 groups: P(2), P(3), P(4) groups and C group (control). Average of concentrations of sIL-2R,TNF-alpha and IFN-gamma in homologous group was statistically analyzed by both ANOV and Newman-Keuls, respectively. The mean of sIL-2R in P(2) group was 97+/-29, P(3): 226+/-80, P(4): 194+/-23 and control group (111+/-30)X10(3) u/L (P<0.01). The mean of TNF-alpha in P(2) group was 1.12+/-0.20, P(3): 3.67+/-1.96, P(4): 1.30+/-0.25 and control group 0.40+/-0.19 mug/L (P<0.01). The mean of IFN-gamma in P(2) group was 360+/-20, P(3): 486+/-15, P(4): 259+/-19 and control group: 16+/-2 ng/L (P<0.01). Judged by ANOV and Newman-Keuls, the mean concentrations of sIL-2R, TNF-alpha and IFN-gamma had a significant difference among groups. Except for P(2) group, the mean sIL-2R between other groups of AE patients had a significant difference (P<0.05). The mean of TNF-alpha concentration in P(3) group was the highest (P<0.01). The mean of IFN-gamma concentration in all patients was higher than that in control group (P<0.01), but there was no difference between AE groups (P>0.05). Low sIL-2R level indicates an early stage of AE or stable status, per contra, a progression stage. Higher level of TNF-alpha might be related to the lesion of liver. The role of single IFN-gamma is limited in immunological defense against AE and it can not fully block pathological progression.
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