Value of controlled attenuation parameter in diagnosis of fatty liver using FibroScan / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To investigate the value of controlled attenuation parameter (CAP) in the diagnosis of fatty liver using FibroScan in patients with chronic liver disease (CLD).</p><p><b>METHODS</b>A prospective cohort study was performed for the patients with chronic hepatitis B (CHB), chronic hepatitis C (CHC), and non-alcoholic fatty liver disease (NAFLD) who underwent liver pathological examination followed by CAP measurement within 1 week in The Second People's Hospital of Tianjin from February 2013 to May 2014. According to related guidelines, hepatocyte steatosis was classified as S0: <5%, S1: 5%-33%, S2: 34%-66%, or S3: ≥67%. The receiver operating characteristic (ROC) curves were plotted with positive results as the diagnostic criteria, and the optimal cut-off values were determined at the maximum Youden index. Single linear regression and multiple stepwise regression were applied to analyze the influencing factors for CAP.</p><p><b>RESULTS</b>A total of 427 patients were enrolled, consisting of 19 patients (4.4%) with NAFLD, 383 (89.7%) with CHB, and 25 (5.9%) with CHC. The optimal cut-off values for CAP in the diagnosis of steatosis ≥5%, ≥34%, and ≥67% were 230 dB/m, 252 dB/m, and 283 dB/m, respectively, and the areas under the ROC curve were 0.803, 0.942, and 0.938, respectively (Z = 14.194, 28.385, and 16.486, respectively, all P < 0.01). CAP differentiated S0 from S1, S1 from S2, S0 from S2, S0 from S3, and S1 from S3 (Z = 10.109, 10.224, 47.81, 29.917, and 10.999, all P < 0.01), but was not able to differentiate S2 from S3 (Z = 0.656, P = 0.5116). The single linear regression and multiple stepwise regression analyses showed that only body mass index (BMI; B = 4.001, P < 0.01) and hepatic steatosis (B = 33.015, P = 0.000) were correlated with CAP. The coincidence rates between CAP and liver pathological diagnosis were 77.4%, 81.0%, and 96.2% for S0, S3, and ≥S2, respectively.</p><p><b>CONCLUSION</b>CAP has a good value in the diagnosis of fatty liver in CLD patients, and can well differentiate between all stages of fatty liver except S2 and S3. CAP is influenced by BMI, but is not found to be associated with liver fibrosis, inflammation, liver stiffness measurement, and etiology.</p>

Impact of liver steatosis on the curative effect of pegylated interferon-alpha-2a in patients with chronic hepatitis B / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To investigate the impact of hepatic steatosis on virologic response to treatment with pegylated interferon-alpha-2a (PEG-IFNα-2a) in chronic hepatitis B (CHB) patients.</p><p><b>METHODS</b>We retrospectively analyzed 50 biopsy-proven cases of CHB in patients who had been administered a 48-week course of PEG-IFNα-2a in our hospital between 2005 and 2009. The patients were stratified according to presence of steatosis confirmed by pathological findings, with 28 in the non-steatosis group and 22 in the steatosis grouP(21 with mild steatosis,and 1 with moderate steatosis).</p><p><b>RESULTS</b>from blood routine test,hepatic and renal function tests, fasting blood glucose test, thyroid function test and blood lipid test were collected for analysis, as were results from hepatitis B viral load test and detection of hepatitis B virus (HBV) markers and autoantibodies. The efficacy of antiviral treatment and side effects were compared between the stratified groups by statistically comparing the results from before and after the 48 weeks of treatment.</p><p><b>RESULTS</b>At the end of treatment, the non-steatosis group had 42.9% of patients with undetectable HBV-DNA ( less than 500 copies/ml), a hepatitis B e antigen (HBeAg) seroconversion rate of 31.6% and a complete response rate of 39.3%. The steatosis group had a lower rate of patients with undetectable HBV-DNA (40.9%) and higher rates of HBeAg seroconversion (33.3%) and complete response (40.9%), but none of the differences reached the threshold for statistical significance (x2=0.012, 0.019, 0.014 and P=0.560,0.600,0.568 respectively). Both groups showed significant increases in triglyceride levels after treatment (steatosis group:t =-2.164, P=0.040; non-steatosis group:t =-2.863, P=0.009), and there was a significant difference between the two groups (t=2.41, P=0.020).</p><p><b>CONCLUSION</b>Our study did not show that mild hepatic steatosis affected the efficiency of a 48-week course of PEG-IFNα-2a treatment for patients with CHB.</p>