Association of Serum Cytokeratin-18 Fragment Concentration in Patients with Different Types of Nonalcoholic Fatty Liver Disease
نویسندگان
چکیده
Nonalcoholic fatty liver disease (NAFLD) is one of the most common forms of chronic liver diseases worldwide. The prevalence of NAFLD was 15% in the Asian population. In a study, NASH was observed in 42.4% of NAFLD cases in Bangladesh. It is a serious clinical problem because of its worldwide distribution and potential adverse sequel. Cytokeratin-18 fragment is a marker of hepatocyte apoptosis. Measurement of serum cytokeratin-18 fragment concentration is a noninvasive, quick and simple procedure that can be carried out easily in peripheral hospital. It can be very much helpful for early detection and frequent monitoring of disease progression and response to therapy. This cross sectional study was conducted in the Department of Clinical Pathology in collaboration with Department of Hepatology and Department of Pathology, BSMMU, Dhaka from March 2014 to February 2015. Forty patients who fulfilled the criteria of NAFLD were determined in our study. The concentration of serum CK-18 fragment was measured to evaluate its association in different types of NAFLD by enzyme linked immune sorbent assay (ELISA). In this study, we observed that the serum CK-18 fragment concentration was increased in relation to Nonalcoholic fatty liver disease Activity Score (NAS) (r=+0.7134, P<0.05). To assess diagnostic performance of CK-18 fragment were used receiver-operator characteristic (ROC) curve. The area under ROC was 0.918 for identification of NASH. Using a cutoff value of 150 U/L the sensitivity and specificity of CK-18 fragment were 85.7% and 80.8% respectively. The positive predictive value, negative predictive value and accuracy of CK-18 fragment were 66.67%, 90.91% and 80.00% respectively. Our data revealed that serum CK-18 fragment was strongly associated with Nonalcoholic fatty liver disease Activity Score (NAS). Serum CK-18 fragment may be a useful noninvasive tool for assessing NASH in patients with NAFLD.
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