Study on correlation of the plasma IL-6 concentration with HCV RNA and liver function in HCV high-risk paid blood donors
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摘要: 目的 了解有偿献血丙型肝炎病毒(hepatitis C virus,HCV)高危人群血浆白细胞介素6(interleukin 6,IL-6)水平与HCV RNA病毒载量及肝功能指标的相关性,探讨细胞因子在HCV感染慢性化机制中的作用。方法 采用酶联免疫吸附法(enzyme-linked immunosorbent,ELISA)检测HCV持续感染者(138例)和对照组未感染者(152例)的血浆IL-6水平,采用荧光定量聚合酶链反应(fluorescence quantitative polymerase chain reaction,FQ-PCR)法检测其HCV RNA水平,采用Spearman相关和偏相关分析以上指标间的相关性。结果 HCV慢性感染者的血浆IL-6水平高于对照组(t=-3.066,P=0.002);IL-6与丙氨酸氨基转移酶(alanine aminotransferase,ALT)和天门冬氨酸氨基转移酶(aspartate aminotransferase,AST)水平均呈正相关(调整前:rALT=0.186,PALT=0.001,rAST=0.177,PAST=0.003;调整后:rALT=0.200,PALT=0.001,rAST=0.127,PAST=0.039);IL-6与HCV RNA水平呈正相关(调整前r=0.199,P=0.019;调整后r=0.200,P=0.025)。结论 血浆IL-6可能与HCV慢性感染密切相关,宿主免疫在HCV感染的慢性化机制中可能发挥着不可忽视的作用。Abstract: Objective To explore the relationship of plasma interleukin 6(IL-6) concentration with HCV RNA, liver function in hepatitis C patients and investigate the role of cytokines in chronic HCV infection. Methods 138 patients with persistent HCV infection and 152 uninfected controls were selected in this study. The plasma IL-6 level and HCV viral load were detected by enzyme linked immunosorbent assay (ELISA) and fluorescence quantitative polymerase chain reaction (FQ-PCR) respectively. The spearman correlation and partial correlation analyses were used to explore their correlations with liver function indexes. Results The chronic HCV infected patients had higher plasma IL-6 level than that of healthy controls (t=-3.066, P=0.002). The IL-6 concentration had a positive correlation with alanine aminotransferase (ALT), aspartate aminotransferase (AST) (before the adjustment:rALT=0.186, PALT=0.001, rAST=0.177. PAST=0.003; after the adjustment:rALT=0.200, PALT=0.001, rAST=0.127, PAST=0.039). The HCV viral load was positively correlated with the IL-6 level in chronic hepatitis C patients (before the adjustment:r=0.199, P=0.019; after the adjustment:r=0.200, P=0.025). Conclusions The plasma IL-6 may be associated with HCV infection and chronic level. The findings provided more insights into the immune mechanism for the development of HCV infection.
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Key words:
- Hepatitis C virus /
- Chronic disease /
- Interleukin-6 /
- Viral load /
- Alanine aminotransferase
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