TY - JOUR AB - Previous studies have indicated that immune dysregulation is an important cause of HCV‑mediated damage to the liver. Co‑stimulation signals, including programmed cell death protein 1 (PD‑1) and inducible T‑cell co‑stimulator (ICOS), have been demonstrated to be involved in the pathogenesis of HCV. The purpose of this study was to investigate the soluble PD‑1 (sPD‑1) and soluble ICOS (sICOS) serum levels in chronic HCV patients, and to elucidate the association of sPD‑1 and sICOS levels with pathological injury of chronic HCV infection. Sixty‑three patients with chronic HCV and 30 normal controls were recruited for this study. The serum concentration levels of sPD‑1 and sICOS were measured by enzyme‑linked immunosorbent assay, and the mRNA levels of PD‑1 and ICOS were detected using real‑time RT‑PCR. The serum sPD‑1 and sICOS levels were significantly elevated in the chronic HCV patient group compared with the normal control group. Furthermore, the relative mRNA expression levels of these proteins were also increased in chronic HCV patients. sPD‑1 and sICOS serum levels were significantly correlated with anti‑HCV antibody levels, but not with HCV RNA. Aberrant sPD‑1 and sICOS serum levels may reflect the dysregulation of T‑cell activation, and are associated with the pathological injury of chronic HCV infection. AD - Department of Laboratory Medicine, The Affiliated Hospital of North Sichuan Medical College, Sichuan 637000, P.R. China Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, P.R. China Medical Laboratory Center of Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, P.R. China Center for Infectious Diseases, Beijing You'an Hospital, Capital Medical University, Beijng 100069, P.R. China AU - Wang,Dongsheng AU - Zhou,Ding'an AU - Du,Qin AU - Liang,Qi AU - Wang,Qiang AU - Fang,Li AU - Wang,Guangrong AU - Fan,Quming AU - Liu,Beizhong AU - Zhou,Jingguo AU - Tang,Zhong AU - Wu,Hao AU - Guo,Xiaolan AU - Jiao,Yanmei AU - Zhang,Guoyuan DA - 2013/04/01 DO - 10.3892/mmr.2013.1326 EP - 1202 IS - 4 JO - Mol Med Rep KW - co‑stimulatory molecules sICOS sPD‑1 dysregulation of T‑cell activation chronic hepatitis C PY - 2013 SN - 1791-2997 1791-3004 SP - 1197 ST - Aberrant production of soluble inducible T‑cell co‑stimulator (sICOS) and soluble programmed cell death protein 1 (sPD‑1) in patients with chronic hepatitis C T2 - Molecular Medicine Reports TI - Aberrant production of soluble inducible T‑cell co‑stimulator (sICOS) and soluble programmed cell death protein 1 (sPD‑1) in patients with chronic hepatitis C UR - https://doi.org/10.3892/mmr.2013.1326 VL - 7 ER -