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Ashley Patton Department of Specialty Medicine, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, USA
Diabetes Institute, Ohio University, Athens, Ohio, USA
Department of Biological Sciences, Ohio University, Athens, Ohio, USA
Molecular & Cellular Biology Program, College of Arts and Sciences, Ohio University, Athens, Ohio, USA

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Tyler Church Department of Specialty Medicine, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, USA
Diabetes Institute, Ohio University, Athens, Ohio, USA

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Caroline Wilson Department of Chemical and Biomolecular Engineering, Russ College of Engineering and Technology, Ohio University, Athens, Ohio, USA

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Jean Thuma Department of Specialty Medicine, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, USA
Diabetes Institute, Ohio University, Athens, Ohio, USA

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Douglas J Goetz Department of Chemical and Biomolecular Engineering, Russ College of Engineering and Technology, Ohio University, Athens, Ohio, USA
Molecular & Cellular Biology Program, College of Arts and Sciences, Ohio University, Athens, Ohio, USA
Biomedical Engineering Program, Ohio University, Athens, Ohio, USA

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Darlene E Berryman Diabetes Institute, Ohio University, Athens, Ohio, USA
Department of Biomedical Sciences, Ohio University, Athens, Ohio, USA
The Edison Biotechnology Institute, Ohio University, Athens, Ohio, USA

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Edward O List Department of Specialty Medicine, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, USA
Diabetes Institute, Ohio University, Athens, Ohio, USA
The Edison Biotechnology Institute, Ohio University, Athens, Ohio, USA

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Frank Schwartz Department of Specialty Medicine, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, USA
Diabetes Institute, Ohio University, Athens, Ohio, USA

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Kelly D McCall Department of Specialty Medicine, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, USA
Diabetes Institute, Ohio University, Athens, Ohio, USA
Department of Biological Sciences, Ohio University, Athens, Ohio, USA
Molecular & Cellular Biology Program, College of Arts and Sciences, Ohio University, Athens, Ohio, USA
Biomedical Engineering Program, Ohio University, Athens, Ohio, USA
Department of Biomedical Sciences, Ohio University, Athens, Ohio, USA

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Introduction Obesity is the single most important risk factor for the development of nonalcoholic fatty liver disease (NAFLD), which is the most prevalent liver disease in the western hemisphere ( Lazo & Clark 2008 , Bellentani et al . 2010

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Rodrigo Martins Pereira Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil

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Kellen Cristina da Cruz Rodrigues Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil

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Chadi Pellegrini Anaruma Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil

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Marcella Ramos Sant’Ana Laboratory of Nutritional Genomics, School of Applied Sciences, University of Campinas, Limeira, Brazil

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Thaís Dantis Pereira de Campos Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil

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Rodrigo Stellzer Gaspar Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil

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Raphael dos Santos Canciglieri Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil

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Diego Gomes de Melo Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil

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Rania A Mekary Department of Neurosurgery, Computational Neuroscience Outcomes Center, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Department of Social and Administrative Sciences, School of Pharmacy, MCPHS University, Boston, Massachusetts, USA

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Adelino Sanchez Ramos da Silva School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
Postgraduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, USP, Ribeirão Preto, São Paulo, Brazil

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Dennys Esper Cintra Laboratory of Nutritional Genomics, School of Applied Sciences, University of Campinas, Limeira, Brazil

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Eduardo Rochete Ropelle Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil

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José Rodrigo Pauli Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil

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Leandro Pereira de Moura Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil

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Introduction Nonalcoholic fatty liver disease (NAFLD) is a pre-condition for most common liver diseases, and it can be developed from hepatic steatosis, non-alcoholic steatohepatitis (NASH), cirrhosis, to hepatocellular carcinoma (HCC) ( Tilg

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Lei Yu Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, China

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Haoran Wang State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China

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Xiaoxue Han State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China

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Honghui Liu State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China

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Dalong Zhu Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, China

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Wenhuan Feng Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, China

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Jinhui Wu State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China

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Yan Bi Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, China

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Introduction Non-alcoholic fatty liver disease (NAFLD), a major epidemic chronic liver disease worldwide, is often accompanied by systemic metabolic disorders, such as obesity, type 2 diabetes and cardiovascular diseases ( Byrne & Targher 2015

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Guangcui Xu School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, China

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Tingting Yan School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, China

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Qiang Peng School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, China

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Haibin Li School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, China

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Weidong Wu School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, China

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Xianwen Yi Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina, USA

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Yingzheng Zhao School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, China

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Introduction In association with the obesity pandemic, the prevalence of nonalcoholic fatty liver disease (NAFLD) and its progressive form, nonalcoholic steatohepatitis ( Sanyal et al . 2010 ), is rising in the whole world and is estimated to

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Gabriel Forn-Cuní Instituto de Investigaciones Marinas, Hospital Universitario Fundación Alcorcón, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain

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Monica Varela Instituto de Investigaciones Marinas, Hospital Universitario Fundación Alcorcón, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain

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Conrado M Fernández-Rodríguez Instituto de Investigaciones Marinas, Hospital Universitario Fundación Alcorcón, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain

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Antonio Figueras Instituto de Investigaciones Marinas, Hospital Universitario Fundación Alcorcón, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain

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Beatriz Novoa Instituto de Investigaciones Marinas, Hospital Universitario Fundación Alcorcón, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain

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diseases are part of a condition termed metabolic syndrome. The hepatic component of metabolic syndrome is non-alcoholic fatty liver disease (NAFLD). This term comprises a wide range of progressive liver injuries including bland steatosis, variable degrees

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Ya Liu Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Xiaoqing Zhou Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Ye Xiao Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Changjun Li Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Yan Huang Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Qi Guo Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Tian Su Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Lei Fu Department of Infectious Diseases, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Liping Luo Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Introduction Nonalcoholic fatty liver disease (NAFLD), characterized mainly by hepatic steatosis, is the most common liver disease worldwide ( Birkenfeld & Shulman 2014 , Meex & Watt 2017 ). It is reported that NAFLD is closely associated

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Lise Margrethe Sjøgaard-Frich L Sjøgaard-Frich, Department of Biology, University of Copenhagen, Copenhagen, Denmark

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Morten Sølling Henriksen M Henriksen, Department of Biology, University of Copenhagen, Copenhagen, Denmark

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Shi Min Lam S Lam, Department of Biology, University of Copenhagen, Copenhagen, Denmark

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Frida Jolande Birkbak F Birkbak, Department of Biology, University of Copenhagen, Copenhagen, Denmark

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Dominika Czaplinska D Czaplinska, Department of Biology, University of Copenhagen, Copenhagen, Denmark

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Mette Flinck M Flinck, Department of Biology, University of Copenhagen, Copenhagen, Denmark

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Stine F. Pedersen S Pedersen, Department of Biology, University of Copenhagen, Kobenhavn, Denmark

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Non-alcoholic fatty liver disease (NAFLD) is the fastest growing cause of liver-associated death globally. Whole-body knockout (KO) of Na+/H+ exchanger 1 (NHE1, SLC9A1) was previously proposed to protect against high fat diet-induced liver damage, however, mechanistic insight was lacking. The aim of the present work was to address this question in vitro to determine how NHE1 specifically in hepatocytes impacts lipid overload-induced inflammation, fibrosis, and hepatocyte- hepatic stellate cell (HSC) crosstalk. We induced palmitate (PA)-based steatosis in AML12 and HepG2 hepatocytes, manipulated NHE1 activity pharmacologically and by CRISPR-Cas knockout (KO) and -overexpression, and measured intracellular pH (pHi), steatosis-associated inflammatory and fibrotic mediators and cell death. PA treatment increased NHE1 mRNA levels but modestly reduced NHE1 protein expression and hepatocyte pHi. NHE1 KO in hepatocytes did not alter lipid droplet accumulation but reduced inflammatory signaling (p38 MAPK activity), lipotoxicity (4-HNE accumulation) and apoptosis (PARP cleavage). Conditioned medium from PA-treated hepatocytes increased expression of NHE1 and of the fibrosis regulator tissue inhibitor of matrix metalloproteases-2 (TIMP2) in LX-2 HSCs, in a manner abolished by NHE1 KO in hepatocytes. We conclude that NHE1 is regulated in NAFLD in vitro and contributes to the ensuing damage by aggravating hepatocyte injury and stimulating hepatocyte-HSC crosstalk.

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Christopher M Mulligan Section of Neonatology, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA

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Jacob E Friedman Section of Neonatology, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA

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properly. Depending on the health of the mother, maternal microbe communities may already be imbalanced when passed on to the infant. In children, metabolic diseases, including obesity, insulin resistance and nonalcoholic fatty liver disease (NAFLD), along

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João Paulo G Camporez Department of Internal Medicine, Howard Hughes Medical Institute, Service of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06536, USA

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Mohamed Asrih Department of Internal Medicine, Howard Hughes Medical Institute, Service of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06536, USA

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Dongyan Zhang Department of Internal Medicine, Howard Hughes Medical Institute, Service of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06536, USA
Department of Internal Medicine, Howard Hughes Medical Institute, Service of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06536, USA

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Mario Kahn Department of Internal Medicine, Howard Hughes Medical Institute, Service of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06536, USA
Department of Internal Medicine, Howard Hughes Medical Institute, Service of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06536, USA

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Varman T Samuel Department of Internal Medicine, Howard Hughes Medical Institute, Service of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06536, USA

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Michael J Jurczak Department of Internal Medicine, Howard Hughes Medical Institute, Service of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06536, USA
Department of Internal Medicine, Howard Hughes Medical Institute, Service of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06536, USA

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François R Jornayvaz Department of Internal Medicine, Howard Hughes Medical Institute, Service of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06536, USA
Department of Internal Medicine, Howard Hughes Medical Institute, Service of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06536, USA

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(NHANES), it is estimated that more than 34% of adults are obese and 68% are overweight or obese ( Flegal et al . 2010 ). In parallel with obesity, nonalcoholic fatty liver disease (NAFLD), which is now the most prevalent chronic liver disease in the USA

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Qiong Lv Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China

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Rufei Gao Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
Laboratory of Lipids and Glucose Metabolism, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China

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Chuan Peng School of Public Health and Management, Chongqing Medical University, Chongqing, China

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Juan Yi Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China

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Lulu Liu Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China

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Shumin Yang Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China

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Danting Li Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China

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Jinbo Hu Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China

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Ting Luo Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China

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Mei Mei Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China

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Ying Song Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China

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Chaodong Wu Department of Nutrition and Food Science, Texas A&M University, College Station, Texas, USA

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Xiaoqiu Xiao School of Public Health and Management, Chongqing Medical University, Chongqing, China

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Qifu Li Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China

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Introduction Excess hepatic deposition of lipids, especially triglyceride (TG), is one of the important features of nonalcoholic fatty liver disease (NAFLD). Over-nutrition, metabolic diseases and genetic factors were widely considered to

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