Fractionation of gamma-glutamyltransferase in patients with nonalcoholic fatty liver disease and alcoholic liver disease

作     者：Shigeo Sueyoshi Setsu Sawai Mamoru Satoh Masanori Seimiya Kazuyuki Sogawa Atsushi Fukumura Mikihiro Tsutsumi Fumio Nomura 

作者机构：Department of Molecular DiagnosisGraduate School of Medicine Chiba University Clinical Proteomics Research Center Chiba University Hospital Department of Hepatology Kanazawa Medical University 

出 版 物：《World Journal of Hepatology》 (世界肝病学杂志（英文版）（电子版）)

年 卷 期：2016年第8卷第36期

页      面：1610-1616页

学科分类：1002[医学-临床医学] 100201[医学-内科学(含：心血管病、血液病、呼吸系病、消化系病、内分泌与代谢病、肾病、风湿病、传染病)] 10[医学] 

基　　金：Japan Society for the Promotion of Science, JSPS, (15K08610, 16K08927, 26460505) Japan Society for the Promotion of Science, JSPS 

主　　题：Gamma-glutamyltransferase f-GGT/t-GGT ratios Alcoholic liver disease Non-alcoholic fatty liver disease Gel filtration liquid chromatography 

摘      要：AIM To assess how serum gamma-glutamyltransferase(GGT) fractions vary in patients with alcoholic liver disease(ALD) and non-alcoholic fatty liver disease(NAFLD). METHODS Serum samples were obtained from 14 patients with biopsy-proven alcoholic liver diseases and 9 patients with biopsy proven non-alcoholic fatty liver disease. In addition to these biopsy-proven cases, 16 obese(body mass index 25) patients without any history of alcohol consumption but with a fatty liver on ultrasound examination and with elevated GGT were included for an additional analysis. Serum GGT fractionation was conducted by high-performance gel filtration liquid chromatography and was separated into the four fractions, big-GGT, medium-GGT, small-GGT(s-GGT), and free-GGT(f-GGT).RESULTS The results were expressed as a ratio of each fraction including the total GGT(t-GGT). The s-GGT/t-GGT ratioswere lowest for the control group and highest for the ALD group. The differences between the control and NAFLD groups and also between the NAFLD and ALD groups were statistically significant. In contrast, the f-GGT/t-GGT ratios were highest in the control group and lowest in the ALD group, with the differences being statistically significant. As a result, the s-GGT/f-GGT ratios were markedly increased in the NAFLD group as compared with the control group. The increase of the s-GGT/t-GGT ratios, the decrease of the f-GGT/t-GGT ratios, and the increase of s-GGT/F-GGT ratios as compared with the control group subjects were also found in obese patients with clinically diagnosed fatty change of the *** Serum GGT fractionation by high-performance gel filtration liquid chromatography is potentially useful for the differential diagnosis of ALD and NAFLD.