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Nonalcoholic fat liver disease

Qian Chen, Mengyang Liu, Haiyang Yu, Jian Li, Sijian Wang, Yi Zhang, Feng Qiu, Tao Wang
Scutellaria baicalensis has been reported to improve the lipid metabolism of high-fat diet-induced liver dysfunction, but direct evidence is rare. This study aimed to explore the effects and mechanisms of S. baicalensis and its major constituent baicalin on hepatic lipotoxicity. KK-Ay mice and orotic acid (OA)-induced nonalcoholic fatty liver disease (NAFLD) rats were used to evaluate lipid metabolism regulatory effects. Sodium oleate-induced triglyceride-accumulated HepG2 cells were used for the mechanism study, pretreated with or without compound C or STO-609 or transfected with liver kinase B1 (LKB1) siRNA...
March 14, 2018: Journal of Natural Medicines
Belén Pérez-Pevida, Jesús Díaz-Gutiérrez, Alexander Dimitri Miras, Camilo Silva, Sonia Romero, Javier Salvador, Javier Escalada, Gema Frühbeck
OBJECTIVE: The objective of this study was to assess the utility of the 2-hour oral glucose tolerance test (OGTT) value to discriminate between different cardiometabolic profiles and examine the role of body composition in predicting the associated increased risk for glucose impairment, beta-cell dysfunction, and cardiovascular disease (CVD). METHODS: Subjects with normal fasting glucose completed a 2-hour OGTT and were categorized to the carbohydrate metabolism alterations (CMAs) or the control group based on a 2-hour glucose threshold of 7...
March 9, 2018: Obesity
Cong Liu, Lian Liu, Hai-Dan Zhu, Jia-Qi Sheng, Xiao-Li Wu, Xing-Xing He, De-An Tian, Jia-Zhi Liao, Pei-Yuan Li
Nonalcoholic fatty liver disease (NAFLD) is a kind of liver lipid synthesis and degradation imbalance related with metabolic syndrome. Celecoxib shows the function of ameliorating NAFLD, but the underlying mechanisms remain unknown. Here, we discuss the possible mechanisms of celecoxib alleviating NAFLD by restoring autophagic flux. Lipids were accumulated in L02 cells treated with palmitate as well as SD rats fed with high-fat diet. Western blot showed that LC3 II/I was higher and p62 was lower on the early stage of steatosis while on the late stage both of them were higher, indicating that autophagic flux was activated on the early stage of steatosis, but blocked on the late stage...
March 7, 2018: Scientific Reports
Diego A Miranda, William C Krause, Amaury Cazenave-Gassiot, Miyuki Suzawa, Hazel Escusa, Juat Chin Foo, Diyala S Shihadih, Andreas Stahl, Mark Fitch, Edna Nyangau, Marc Hellerstein, Markus R Wenk, David L Silver, Holly A Ingraham
Excess lipid accumulation is an early signature of nonalcoholic fatty liver disease (NAFLD). Although liver receptor homolog 1 (LRH-1) (encoded by NR5A2) is suppressed in human NAFLD, evidence linking this phospholipid-bound nuclear receptor to hepatic lipid metabolism is lacking. Here, we report an essential role for LRH-1 in hepatic lipid storage and phospholipid composition based on an acute hepatic KO of LRH-1 in adult mice (LRH-1AAV8-Cre mice). Indeed, LRH-1-deficient hepatocytes exhibited large cytosolic lipid droplets and increased triglycerides (TGs)...
March 8, 2018: JCI Insight
Wei Song, Zongling Wang, Xuelei Zhang, Yan Li
Ulva prolifera is the major causative species in the green tide, a serious marine ecological disaster, which bloomed in the Yellow Sea and the Bohai Sea of China. However, it is also a popular edible seaweed and its extracts exerts anti-inflammatory and antioxidant effects. The present study investigated the effects of ethanol extract of U. prolifera (EUP) on insulin sensitivity, inflammatory response, and oxidative stress in high-fat-diet- (HFD-) treated mice. HFD-treated mice obtained drinking water containing 2% or 5% EUP...
2018: BioMed Research International
Chloe S Chaudhury, Julia B Purdy, Chia-Ying Liu, Caryn G Morse, Takara L Stanley, David Kleiner, Colleen Hadigan
BACKGROUND & AIMS: Nonalcoholic fatty liver disease is common in HIV, but there are no approved therapies. The aim of this open-label proof-of-concept study was to determine the effect of the mineralocorticoid receptor antagonist eplerenone on hepatic fat in HIV-infected patients with hepatic fat ≥ 5% by magnetic resonance spectroscopy. METHODS: Five subjects received eplerenone (25 mg daily x 1 week followed by 50 mg daily x 23 weeks). Laboratory tests were done at each visit, and the primary endpoint, change in hepatic fat content, was determined by MRI spectroscopy at baseline and week 24...
March 6, 2018: Liver International: Official Journal of the International Association for the Study of the Liver
Anna L Lang, Liya Chen, Gavin D Poff, Wen-Xing Ding, Russel A Barnett, Gavin E Arteel, Juliane I Beier
Vinyl chloride (VC), a common industrial organochlorine and environmental pollutant, has been shown to directly cause hepatic angiosarcoma and toxicant-associated steatohepatitis at high exposure levels. However, the impact of lower concentrations of VC on the progression of underlying liver diseases (e.g., nonalcoholic fatty liver disease [NAFLD]) is unclear. Given the high prevalence of NAFLD in the United States (and worldwide) population, this is an important concern. Recent studies by our group with VC metabolites suggest a potential interaction between VC exposure and underlying liver disease to cause enhanced damage...
March 2018: Hepatology Communications
Miguel A Lanaspa, Masanari Kuwabara, Ana Andres-Hernando, Nancy Li, Christina Cicerchi, Thomas Jensen, David J Orlicky, Carlos A Roncal-Jimenez, Takuji Ishimoto, Takahiko Nakagawa, Bernardo Rodriguez-Iturbe, Paul S MacLean, Richard J Johnson
Dietary guidelines for obesity typically focus on three food groups (carbohydrates, fat, and protein) and caloric restriction. Intake of noncaloric nutrients, such as salt, are rarely discussed. However, recently high salt intake has been reported to predict the development of obesity and insulin resistance. The mechanism for this effect is unknown. Here we show that high intake of salt activates the aldose reductase-fructokinase pathway in the liver and hypothalamus, leading to endogenous fructose production with the development of leptin resistance and hyperphagia that cause obesity, insulin resistance, and fatty liver...
March 5, 2018: Proceedings of the National Academy of Sciences of the United States of America
Hugo Perazzo, Isabela Benseñor, José Geraldo Mill, Antônio G Pacheco, Maria de Jesus Mendes da Fonseca, Rosane Härter Griep, Paulo Lotufo, Dora Chor
GOALS: To develop a noninvasive algorithm for diagnosis of liver steatosis and to compare its diagnostic value with available predictive models. BACKGROUND: Liver steatosis represents the most frequent liver disease worldwide. STUDY: This cross-sectional study analyzed data from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Patients were randomly divided into training (n=6571) and validation (n=3286) cohort. Abdominal ultrasound (US), used to grade steatosis, and overnight fasting blood tests were performed at the same day...
March 2, 2018: Journal of Clinical Gastroenterology
Lauren Weaver, Abdul-Rizaq Ali Hamoud, David E Stec, Terry D Hinds
The buildup of fat in the liver (hepatic steatosis) is the first step in a series of incidents that may drive hepatic disease. Obesity is the leading cause of nonalcoholic fatty liver disease (NAFLD) in which hepatic steatosis progresses to liver disease. Chronic alcohol exposure also induces fat accumulation in the liver and shares numerous similarities to obesity-induced NAFLD. Regardless, if hepatic steatosis is due to obesity or long-term alcohol use, it still may lead to hepatic fibrosis, cirrhosis, or possibly hepatocellular carcinoma...
March 1, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
Sulan Lin, Yajing Xian, Yi Liu, Wen Cai, Jiangmei Song, Xiangyang Zhang
This study is to investigate the prevalence and risk factors of nonalcoholic fatty liver disease (NAFLD) and to analyze the effect of comprehensive community intervention on NAFLD in community residents in Urumqi, China.Cluster sampling method with street community as a unit was adopted in this study. Questionnaire survey, body measurement, blood biochemistry (including liver function, fasting blood glucose [FPG], and uric acid [UA]) examination as well as liver B ultrasound were performed. Then, comprehensive intervention was conducted in NAFLD patients...
March 2018: Medicine (Baltimore)
Ao Chen, Xiaodong Chen, Shiqiang Cheng, Le Shu, Meiping Yan, Lun Yao, Binyu Wang, Shuguang Huang, Lei Zhou, Zaiqing Yang, Guoquan Liu
The fat mass and obesity-associated (FTO) gene is tightly related to body weight and fat mass, and plays a pivotal role in regulating lipid accumulation in hepatocytes. However, the mechanisms underlying its function are poorly understood. Sterol regulatory element binding protein-1c (SREBP1c) is a transcription factor that regulates lipogenesis. Cell death-inducing DFFA (DNA fragmentation factor-α)-like effector c (CIDEC) plays a crucial role in lipid droplets (LDs) size controlling and lipid accumulation...
February 24, 2018: Biochimica et Biophysica Acta
Angélica Heringer Rodrigues, Carolina Campos Lima Moreira, Maria José Neves, Leida Maria Botion, Valéria Ernestânia Chaves
Several studies have demonstrated that fish oil consumption improves metabolic syndrome and comorbidities, as insulin resistance, nonalcoholic fatty liver disease, dyslipidaemia and hypertension induced by high-fat diet ingestion. Previously, we demonstrated that administration of a fructose-rich diet to rats induces liver lipid accumulation, accompanied by a decrease in liver cytosolic lipases activities. In this study, the effect of replacement of soybean oil by fish oil in a high-fructose diet (FRUC, 60% fructose) for 8 weeks on lipid metabolism in liver and epididymal adipose tissue from rats was investigated...
February 2, 2018: Journal of Nutritional Biochemistry
Raphael Chevre, Laia Trigueros-Motos, David Castaño, Tricia Chua, Maria Corlianò, Jay V Patankar, Lareina Sng, Lauren Sim, Tan Liang Juin, Guillaume Carissimo, Lisa F P Ng, Cheryl Neo Jia Yi, Chelsea Chandani Eliathamby, Albert K Groen, Michael R Hayden, Roshni R Singaraja
Bile acids (BAs) are surfactant molecules that regulate the intestinal absorption of lipids. Thus, the modulation of BAs represents a potential therapy for nonalcoholic fatty liver disease (NAFLD), which is characterized by hepatic accumulation of fat and is a major cause of liver disease worldwide. Cyp8b1 is a critical modulator of the hydrophobicity index of the BA pool. As a therapeutic proof of concept, we aimed to determine the impact of Cyp8b1 inhibition in vivo on BA pool composition and as protection against NAFLD...
February 26, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Xiao-Jun Ma, Hai-Zhou Xing, Gao-Fei Ren, Xiao-Juan Rao, Zhi-Zhen Li
Multiple pathways contribute to nonalcoholic fatty liver disease (NAFLD) in response to high fat diets (HFD). A homolog of mammalian JNK-interacting protein 3 (JIP3), also known as JSAP-1, activates different components in various signaling pathways to modulate cellular processes. The purpose of this study was to examine the role of JIP3 in obesity-related pathologies pathway. Wild-type (WT) C57BL/6 and JIP3-knockout (JIP3-/- ) mice were randomized to chow or HFD. HFD-fed WT mice increased hepatic JIP3 expression...
February 15, 2018: Biochemical and Biophysical Research Communications
Patrícia O Benetolo, Maria I M Fernandes, Ieda R L Del Ciampo, Jorge Elias-Junior, Regina Sawamura
OBJECTIVE: To determine the frequency of nonalcoholic fatty liver disease using nuclear magnetic resonance as a noninvasive method. METHODOLOGY: This was a cross-sectional study conducted on 50 children and adolescents followed up at an outpatient obesity clinic. The subjects were submitted to physical examination, laboratory tests (transaminases, liver function tests, lipid profile, glycemia, and basal insulin) and abdominal nuclear magnetic resonance (calculation of hepatic, visceral, and subcutaneous fat)...
February 10, 2018: Jornal de Pediatria
Eman F Khaleel, Ghada A Abdel-Aleem
This study investigated the ameliorative and protective effects of long-term obestatin administration (80 nmol/kg/ intraperitoneal injection (i.p.)) on the pathogenesis of high-fat diet (HFD) induced nonalcoholic fatty liver disease (NAFLD) in rats. Rats (n = 8/group) were divided as control, NAFLD, NAFLD + Simvastatin, NAFLD + obestatin, NAFLD then obestatin, and obestatin then NAFLD. Obestatin co -or post-therapy significantly reduced hepatomegaly and reversed hyperlipidemia, hepatic lipid accumulation, and insulin resistance (IR)...
February 10, 2018: Archives of Physiology and Biochemistry
Shu Yun Zhu, Ning Jiang, Jing Yang, Jie Tu, Yue Zhou, Xiang Xiao, Ying Dong
In the present study, the effects of Silybum marianum oil (SMO) on hepatic steatosis and oxidative stress were investigated during the development of nonalcoholic fatty liver disease (NAFLD) in high fat diet (HFD)-fed mice. The results showed that body weight, fat mass, and serum biochemical parameters such as triglyceride, free fatty acid, glucose and insulin were reduced by SMO treatment. Meanwhile, SMO decreased the histological injury of liver and the levels of hepatic triglyceride, cholesterol and free fatty acid in HFD-fed mice...
February 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Laura Pérez-Martínez, Laura Ochoa-Callejero, Susana Rubio-Mediavilla, Judit Narro, Iván Bernardo, José-Antonio Oteo, José-Ramón Blanco
Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease in the general population. Its severity ranges from simple steatosis to cirrhosis. C-C chemokine ligand type 5 or RANTES plays an important role in the progression of hepatic inflammation and fibrosis. Our objective was to examine the preventive and therapeutic effects of maraviroc (MVC), a C-C chemokine receptor 5 antagonist, on liver pathology in an NAFLD mouse model. A total of 60 male C57BL/6 mice were randomly assigned to 1 of 4 groups: (1) high-fat diet (HFD) group or control group, (2) preventive group (HFD group plus MVC in drinking water since the beginning of the study), (3) early-therapeutic group (HFD group plus MVC in drinking starting at week 24 of the study), and (4) late-therapeutic group (HFD group plus MVC in drinking water starting at week 36 of the study)...
January 31, 2018: Translational Research: the Journal of Laboratory and Clinical Medicine
Thomas Jensen, Manal F Abdelmalek, Shelby Sullivan, Kristen J Nadeau, Melanie Green, Carlos Roncal, Takahiko Nakagawa, Masanari Kuwabara, Yuka Sato, Duk-Hee Kang, Dean R Tolan, Laura G Sanchez-Lozada, Hugo R Rosen, Miguel A Lanaspa, Anna Mae Diehl, Richard J Johnson
Nonalcoholic Fatty Liver Disease (NAFLD) is the hepatic manifestation of metabolic syndrome, and its rising prevalence parallels the rise in obesity and diabetes. Historically thought to result from overnutrition and sedentary lifestyle, recent evidence suggests that diets high in sugar (from sucrose and/or high fructose corn syrup (HFCS)) not only increases the risk for NAFLD, but also, nonalcoholic steatohepatitis (NASH). Here we review the experimental and clinical evidence that fructose precipitates fat accumulation in the liver, due to both increased lipogenesis and impaired fat oxidation...
January 31, 2018: Journal of Hepatology
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