实用医学杂志 ›› 2022, Vol. 38 ›› Issue (9): 1102-1107.doi: 10.3969/j.issn.1006⁃5725.2022.09.011

• 临床研究 • 上一篇    下一篇

血清细胞角蛋白⁃18水平与经磁共振成像质子密度脂肪分数量化的肝脏脂肪变性程度的相关性

胡盛龙1 赵莉3 庄立琨2 刘守胜2 辛永宁1 宣世英1    

  1. 青岛大学附属青岛市市立医院 1 感染性疾病科(山东青岛266011),2 临床研究中心(山东青岛266071); 3 青岛市平度市疾病预防控制中心质量管理科(山东青岛266700)

  • 出版日期:2022-05-10 发布日期:2022-05-10
  • 通讯作者: 辛永宁 E⁃mail:xinyongning@163.com;宣世英 E⁃mail:xuansydxy@163.com
  • 基金资助:
    国家自然科学基金(编号:31770837)

Correlation between serum CK⁃18 level and the degree of hepatic steatosis as quantified by magnetic reso⁃ nance imaging proton density fat fraction

HU Shenglong*,ZHAO Li,ZHUANG Likun,LIU Shousheng,XIN Yongning,XUAN Shiying.   

  1. Department of Infectious Diseases,Qingdao Municipal Hospital Affiliated to Qingdao University,Qingdao 266011,China

  • Online:2022-05-10 Published:2022-05-10
  • Contact: XIN Yongning E⁃mail:xinyongning@163.com;XUAN Shiying E⁃mail:xuansydxy@163.com

摘要:

目的 本研究拟在经磁共振成像质子密度脂肪分数(MRI⁃PDFF)诊断的非酒精性脂肪性 肝病(NAFLD)患者中,研究血清细胞角蛋白 18(CK⁃18)M30 M65 水平与肝脏脂肪变性的相关性及其对 NAFLD 患者肝脏脂肪变性的诊断价值。方法 招募 NAFLD 患者和健康体检者,收集受试者基本资料和 临床信息,CK⁃18 M30 M65 水平利用酶联免疫吸附(ELISA)试剂盒进行检测。对所有受试者行 MRI⁃ PDFF 检测,根据结果将 NAFLD 患者分为轻度脂肪变性(S1)组和中重度脂肪变性(S2&S3)组。统计学分 析利用 SPSS 26.0 软件进行。结果 本研究共纳入 120 例受试者,其中健康对照 40 例,NAFLD 患者 80 例。 血清 CK⁃18 M30 水平在 S2&S3 组中分别与 S1 组和健康对照组比较差异有统计学意义(P = 0.037、0.005), 但健康对照组与 S1 组中 CK⁃18 M30 水平差异无统计学意义(P = 0.292),血清 CK⁃18 M65 水平在各组间差 异均无统计学意义。Pearson 相关分析结果表明血清 CK⁃18 M30 MRI⁃PDFF 诊断的肝脏脂肪变性程度 呈正相关(r = 0.404)。血清 CK⁃18 M30 预测肝脏脂肪变性程度≥ S1 与≥ S2 的受试者工作特征曲线下面积 AUC)、敏感性、特异性、临界值分别为 0.611 0.666、53.75% 60.71%、72.5% 79.35%、100.4 U/L 118.9 U/L。结论 本研究发现血清 CK⁃18 M30 在肝脏脂肪变性患者中水平升高,且与 MRI⁃PDFF 值呈正相 关,CK⁃18 M30 水平与肝脏脂肪变性加重相关,血清 CK⁃18 M30 与肝脏脂肪变性程度的关联值得进一步 研究。

关键词:

非酒精性脂肪性肝病, 细胞角蛋白18, 磁共振成像

Abstract:

Objective The relationship between serum Cytokeratin⁃18(CK⁃18)and hepatic steatosis in patients with non⁃alcoholic fatty liver disease(NAFLD)was unclear. The aim of this study was to investigate the correlation of serum CK ⁃18 M30 and M65 with the hepatic steatosis in patients with magnetic resonance imaging proton density fat fraction(MRI⁃PDFF)diagnosed NAFLD,and the diagnostic value of CK⁃18 M30 and M65 on hepatic steatosis. Methods Health controls and patients with NAFLD were recruited,and the basic information and clinical parameters were collected. The concentrations of serum CK⁃18 M30 and M65 were measured with the enzyme linked immunosorbent assay(ELISA)methods. All participates were subjected to the MRI⁃PDFF examina⁃ tion and the degrees of hepatic steatosis were represented by the MRI⁃PDFF values. Patients with NAFLD were divided into the S1 group and S2 & S3 group according to the MRI⁃PDFF values. Statistical analyze were conducted by the SPSS 26.0 software. Results A total of 120 subjects were included,which comprised of 40 health controls and 80 NAFLD patients. Serum CK ⁃18 M30 levels in S2&S3 group were significant different compared to the S1 group and health controls(P = 0.037,P = 0.005),but not different between S1 group and health controls(P = 0.292). No significant differences of serum CK⁃18 M65 levels in each group. Pearson correlation coefficient analysis suggested that serum CK⁃18 M30 levels were positively associated with hepatic steatosis(r = 0.404). The area under the receiver operating characteristic(AUROC)values,sensitivity,specificity,and cut⁃off values of serum CK⁃18 M30 levels on diagnosing the hepatic steatosis were 0.611 and 0.666,53.75% and 60.71%,72.5% and 79.35%,100.4 U/L and 118.9 U/L,respectively. Conclusion This study found serum CK⁃18 M30 level was elevated in patients with hepatic steatosis,and was positively correlated with MRI⁃PDFF,indicating that the level of CK⁃18 M30 in NAFLD patients was associated with progress of hepatic steatosis. We did not find a correlation between serum CK⁃18 M65 levels and hepatic steatosis. The association of serum CK⁃18 M30 with the degree of hepatic steatosis deserves further study.

Key words:

non?alcoholic fatty liver disease, cytokeratin?18, magneticresonance imaging