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Background and Aims: Methionine-choline deficient (MCD) diet duration necessary for development of non-alcoholic fatty liver disease (NAFLD) and the dynamic of lipid profile and fatty acids are not completely established. The study examined dynamics and association between liver free fatty acids (FFA), serum lipid profile and liver morphological changes on MCD diet-induced NAFLD in mice., Methods: Male C57BL/6 mice (n = 28) were divided into four groups (n = 7 per group): control: fed with standard chow, MCD diet-fed groups: 2, 4 or 6 weeks. After treatment, liver and blood samples were taken for histopathology, serum lipid profile, and liver FFA composition., Results: Hepatic FFA profile showed a decrease in saturated acids, arachidonic and docosahexaenoic acid, whereas proportions of docosapentaenoic, oleic and linoleic acid were increased. Total cholesterol, HDL and triglycerides progressively decreased, whereas LDL level progressively increased. Focal fatty change in the liver appeared after 2 weeks, whereas diffuse fatty change with severe inflammation and ballooned hepatocytes were evident after 6 weeks., Conclusions: Six-week diet model may be appropriate for investigation of the role of lipotoxicity in the progression of NAFLD. Therefore, supplementation with n-3 polyunsaturated acid like DHA, rather than DPA, especially in the initial stage of fatty liver disease, may potentially have preventive effects and alleviate development of NAFLD/NASH and may also potentially reduce cardiovascular risk by moderating dyslipidemia., (Copyright © 2014 IMSS. Published by Elsevier Inc. All rights reserved.)

Objective: The alcoholic liver disease (ALD)/nonalcoholic fatty liver disease (NAFLD) (ANI) scoring system was constructed as a response to a clinical need for avoiding the risks of liver biopsy in diagnosing the etiology of fatty liver disease. The aim of this study was to test the reliability of ANI as a noninvasive method to distinguish ALD from NAFLD., Materials and Methods: One hundred and thirty-five patients were classified into two groups, ALD and NAFLD, according to the pathohistological results. Parameters for ANI are aspartate aminotransferase, alanine aminotransferase, mean corpuscular volume, BMI, and sex. ANI was calculated using an online calculator, official site of Mayo Clinic., Results: ANI was significantly higher in patients with ALD than NAFLD (P<0.01). The cutoff point of ANI is -0.66. ANI greater than -0.66 indicates ALD, whereas ANI less than -0.66 yields a higher probability of NAFLD with high specificity (96.7%) and sensitivity (84.1%). The mean corpuscular volume and aspartate aminotransferase/alanine aminotransferase ratio were higher, whereas BMI was lower in patients with ALD than in NAFLD (P<0.01)., Conclusion: The ANI scoring system may be used for the estimation of alcoholic origin of steatosis/steatohepatitis and may help in triaging patients for liver biopsy. ANI less than -0.66 indicates NAFLD, whereas ANI greater than -0.66 confirms the alcoholic etiology, but does not exclude the contribution of associated factors toward the development of fatty liver in a Serbian population.