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Liraglutide steatosis

Stergios A Polyzos, Jannis Kountouras, Christos S Mantzoros
The association of obesity with nonalcoholic fatty liver disease (NAFLD) has been established. Obesity has been linked not only to initial stages of the disease, i.e., simple steatosis (SS), but also to its severity. Form an epidemiologic point of view, both diseases has an increasing prevalence worldwide. From a pathogenetic point of view, obesity and its associate IR contribute to the initial fat accumulation in the hepatocyte (SS), but also to the progression of SS to nonalcoholic steatohepatitis (NASH), NASH-related cirrhosis and hepatocellular carcinoma (HCC)...
October 6, 2016: Minerva Endocrinologica
Mark M Smits, Lennart Tonneijck, Marcel H A Muskiet, Mark H H Kramer, Petra J W Pouwels, Indra C Pieters-van den Bos, Trynke Hoekstra, Michaela Diamant, Daniël H van Raalte, Djuna L Cahen
AIMS/HYPOTHESIS: Glucagon-like peptide (GLP)-1-based therapies have been suggested to improve hepatic steatosis. We assessed the effects of the GLP-1 receptor agonist liraglutide and the dipeptidyl peptidase (DPP)-4 inhibitor sitagliptin on hepatic steatosis and fibrosis in patients with type 2 diabetes. METHODS: In this 12 week, parallel, randomised, placebo-controlled trial, performed at the VU University Medical Center between July 2013 and August 2015, 52 overweight patients with type 2 diabetes treated with metformin and/or sulphonylurea agent ([mean ± SD] age 62...
September 15, 2016: Diabetologia
Qin He, Sha Sha, Lei Sun, Jing Zhang, Ming Dong
The incidence of nonalcoholic fatty liver disease (NAFLD) keeps rising year by year, and NAFLD is rapidly becoming the most common liver disease worldwide. Clinical studies have found that glucagon-like peptide-1 (GLP-1) analogue, liraglutide (LRG), cannot only reduce glucose levels, but also improve hepatic lipase, especially in patients also with type 2 diabetes mellitus (T2DM). In addition, enhancing autophagy decreases lipid accumulation in hepatocytes. The aim of the present study is to explore the effect of LRG on hepatocyte steatosis and the possible role of autophagy...
August 5, 2016: Biochemical and Biophysical Research Communications
Matthew James Armstrong, Piers Gaunt, Guruprasad P Aithal, Darren Barton, Diana Hull, Richard Parker, Jonathan M Hazlehurst, Kathy Guo, George Abouda, Mark A Aldersley, Deborah Stocken, Stephen C Gough, Jeremy W Tomlinson, Rachel M Brown, Stefan G Hübscher, Philip N Newsome
BACKGROUND: Glucagon-like peptide-1 (GLP-1) analogues reduce hepatic steatosis, concentrations of liver enzymes, and insulin resistance in murine models of fatty liver disease. These analogues are licensed for type 2 diabetes, but their efficacy in patients with non-alcoholic steatohepatitis is unknown. We assessed the safety and efficacy of the long-acting GLP-1 analogue, liraglutide, in patients with non-alcoholic steatohepatitis. METHODS: This multicentre, double-blinded, randomised, placebo-controlled phase 2 trial was conducted in four UK medical centres to assess subcutaneous injections of liraglutide (1·8 mg daily) compared with placebo for patients who are overweight and show clinical evidence of non-alcoholic steatohepatitis...
February 13, 2016: Lancet
Mark M Smits, Lennart Tonneijck, Marcel H A Muskiet, Trynke Hoekstra, Mark H H Kramer, Indra C Pieters, Djuna L Cahen, Michaela Diamant, Daniël H van Raalte
INTRODUCTION: Incretin-based therapies, that is, glucagon-like peptide (GLP)-1 receptor agonists and dipeptidyl peptidase (DPP)-4 inhibitors, are relatively novel antihyperglycaemic drugs that are frequently used in type 2 diabetes management. Apart from glucose-lowering, these agents exhibit pleiotropic actions that may have favourable and unfavourable clinical consequences. Incretin-based therapies have been associated with heart rate acceleration, heart failure, acute renal failure and acute pancreatitis...
2015: BMJ Open
Huiting Gao, Zhigang Zeng, Han Zhang, Xiaoli Zhou, Lichang Guan, Weiping Deng, Lishu Xu
Liraglutide, a glucagon-like peptide-1 (GLP-1) analogue, has been demonstrated to reduce hepatic steatosis. However, the mechanism of the lipid-lowering effect of liraglutide in the liver remains unclear. The aim of the present study was to investigate the beneficial effect of liraglutide on diet-induced non-alcoholic fatty liver disease (NAFLD) and the underlying mechanism in rats. NAFLD was induced in Sprague-Dawley rats by feeding a high fat and high cholesterol (HFHC) diet. Liraglutide (0.6 mg/kg body weight/d) was injected intraperitoneally to the rats subjected to HFHC diet four weeks before sacrificing the animals...
2015: Biological & Pharmaceutical Bulletin
K Vinodraj, I M Nagendra Nayak, J Vikram Rao, Paul Mathai, N Chandralekha, B Nitasha, D Rajesh, T K Chethan
OBJECTIVES: To evaluate the efficacy of liraglutide with pioglitazone for prevention of dexamethasone induced hepatic steatosis, dyslipidemia and hyperglycemia in Albino rats. MATERIALS AND METHODS: There were four groups of six rats each. First group received dexamethasone alone in a dose of 8 mg/kg intraperitoneally for 6 days to induce metabolic changes and considered as dexamethasone control. Second group received liraglutide 1.8 mg/kg subcutaneously 6 days before dexamethasone and 6 days during dexamethasone administration...
March 2015: Indian Journal of Pharmacology
Tomoaki Inoue, Toyoshi Inoguchi, Noriyuki Sonoda, Hari Hendarto, Hiroaki Makimura, Shuji Sasaki, Hisashi Yokomizo, Yoshinori Fujimura, Daisuke Miura, Ryoichi Takayanagi
OBJECTIVE: Accumulating evidence has implicated that GLP-1 may have a beneficial effect on cardiovascular but the mechanism is not fully understood. Here we show that GLP-1 analog, liraglutide, inhibits cardiac steatosis, oxidative stress and apoptosis in streptozotocin (STZ)-induced type 1 diabetic rats, via activation of AMPK-Sirt1 pathway. METHODS: Diabetic rats were treated with subcutaneous injections of liraglutide (0.3 mg/kg/12 h) for 4 weeks. Myocardial steatosis (detected by oil red O staining and myocardial triglyceride and diacylglycerol (DAG) contents assay), expression of protein kinase C (PKC), heart NAD(P)H oxidase activity, oxidative stress markers (8-hydroxy-2'-deoxyguanosine staining), apoptosis (TUNEL analysis) and genes that affect apoptosis and lipid metabolism were evaluated...
May 2015: Atherosclerosis
Shi-Wei Zhou, Man Zhang, Min Zhu
Simple hepatic steatosis is the early stage of non‑alcoholic fatty liver disease and is recognized as a benign process. Previous studies show that glucagon‑like peptide‑1 has great potential in improving hepatic steatosis. Recent data have revealed that inhibiting autophagy exacerbates lipid accumulation in hepatocytes. Therefore, the present study aimed to determine the effects of liraglutide (LG) on simple hepatic steatosis and the possible role of autophagy. Firstly, steatotic L‑02 cells were induced by incubating L‑02 cells with 1 mmol/l free fatty acid (FFA) mixture (oleic acid and palmitic acid at a molar ratio of 2:1) for 24 h...
November 2014: Molecular Medicine Reports
Hideya Kashihara, Mitsuo Shimada, Nobuhiro Kurita, Hirohiko Sato, Kozo Yoshikawa, Jun Higashijima, Motoya Chikakiyo, Masaaki Nishi, Chie Takasu
BACKGROUND AND AIM: Bariatric surgery not only elicits weight loss but also rapidly resolves diabetes. However, the mechanisms remain unclear. The present study investigates how diabetes and liver steatosis are improved after duodenal-jejunal bypass (DJB) compared with a glucagon-like peptide-1 (GLP-1) analog and correlations between bile acids and GLP-1 secretion. METHODS: We initially determined the effects of bile acids on GLP-1 in vitro and then assigned 12 male 16-week-old Otsuka Long-Evans Tokushima Fatty rats to groups that underwent DJB, a sham operation, or were treated with the GLP-1 receptor agonist, liraglutide (n = 4 each)...
February 2015: Journal of Gastroenterology and Hepatology
Satoru Yamazaki, Hiroaki Satoh, Tsuyoshi Watanabe
We investigated the effects of liraglutide on insulin sensitivity and glucose metabolism in male Wistar rats. The rats were fed a normal chow diet (NCD) or a 60% high-fat diet (HFD) for a total of 4 weeks. After 3 weeks of feeding, they were injected with liraglutide once a day for 7 days. Subsequently, euglycemic-hyperinsulinemic clamp studies were performed after fasting the animals for 8 hours. During the clamp studies on the NCD-fed rats, the glucose infusion rate required for euglycemia was significantly higher in the liraglutide group than in the control group...
September 2014: Endocrinology
Manhal Olaywi, Taruna Bhatia, Sury Anand, Shashideep Singhal
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) encompasses a spectrum that ranges from simple steatosis to non-alcoholic steatohepatitis (NASH) and to cirrhosis. The recommended treatment for this disease includes measures that target obesity and insulin resistance. The present review summarizes the role of newer anti-diabetic agents in treatment of NAFLD. DATA SOURCES: PubMed, MEDLINE and Ovid databases were searched to identify human studies between January 1990 and January 2013 using specified key words...
December 2013: Hepatobiliary & Pancreatic Diseases International: HBPD INT
Huiting Gao, Lishu Xu, Dongfeng Li, Lichang Guang, Weiping Deng
OBJECTIVE: To investigate the effects of glucagon-like peptide-1 (GLP-1) on liver oxidative stress, TNF-α and TGF-β1 in rats with diet-induced non-alcoholic fatty liver disease (NAFLD). METHODS: Thirty male rats were randomly divided into 3 equal groups and fed for 16 weeks with normal diet (ND), high-fat diet (HFD), or high-fat diet with intraperitoneal injection of liraglutide (GLP-1, administered in the later 4 weeks). The rats were then sacrificed to obtain blood samples and liver tissues for analyzing the levels of blood aminotransferase (ALT), triglyceride (TG), and total-cholesterol (TC) using an automatic biochemical analyzer and the levels of superoxide dismutase (SOD), malondial-dehyde (MAD), free fatty acid (FFAs), TNF-α in the liver homogenates and TGF-β1 in serum by radioimmunoassay or ELISA...
November 2013: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
Daniel J Cuthbertson, Andrew Irwin, Chris J Gardner, Christina Daousi, Tej Purewal, Niall Furlong, Niru Goenka, E Louise Thomas, Valerie L Adams, Sudeep P Pushpakom, Munir Pirmohamed, Graham J Kemp
Glucagon-like peptide-1 receptor agonists (GLP-1 RA) are effective for obese patients with type 2 diabetes mellitus (T2DM) because they concomitantly target obesity and dysglycaemia. Considering the high prevalence of non-alcoholic fatty liver disease (NAFLD) in patients with T2DM, we determined the impact of 6 months' GLP-1 RA therapy on intrahepatic lipid (IHL) in obese, T2DM patients with hepatic steatosis, and evaluated the inter-relationship between changes in IHL with those in glycosylated haemoglobin (HbA(1)c), body weight, and volume of abdominal visceral and subcutaneous adipose tissue (VAT and SAT)...
2012: PloS One
M J Armstrong, D D Houlihan, I A Rowe, W H O Clausen, B Elbrønd, S C L Gough, J W Tomlinson, P N Newsome
BACKGROUND: Non-alcoholic fatty liver disease has reached epidemic proportions in type 2 diabetes (T2D). Glucagon-like peptide-1 analogues are licensed in T2D, yet little data exist on efficacy and safety in liver injury. AIM: To assess the safety and efficacy of 26-week liraglutide on liver parameters in comparison with active-placebo. METHODS: Individual patient data meta-analysis was performed using patient-level data combined from six 26-week, phase-III, randomised controlled T2D trials, which comprise the 'Liraglutide Effect and Action in Diabetes' (LEAD) program...
January 2013: Alimentary Pharmacology & Therapeutics
Jun Shirakawa, Ritsuko Tanami, Yu Togashi, Kazuki Tajima, Kazuki Orime, Naoto Kubota, Takashi Kadowaki, Yoshio Goshima, Yasuo Terauchi
The glucagon-like peptide-1 receptor agonist liraglutide is used to treat diabetes. A hallmark of liraglutide is the glucose-dependent facilitation of insulin secretion from pancreatic β-cells. In β-cells, the glycolytic enzyme glucokinase plays a pivotal role as a glucose sensor. However, the role of glucokinase in the glucose-dependent action of liraglutide remains unknown. We first examined the effects of liraglutide on glucokinase haploinsufficient (Gck(+/-)) mice. Single administration of liraglutide significantly improved glucose tolerance in Gck(+/-) mice without increase of insulin secretion...
July 2012: Endocrinology
D Shyangdan, C Clar, N Ghouri, R Henderson, T Gurung, D Preiss, N Sattar, A Fraser, N Waugh
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is closely linked with obesity and the prevalence of NAFLD is about 17% to 33% in the Western world. There is a strong association of NAFLD with insulin resistance and, hence, insulin sensitisers have been tried. This systematic review examined the clinical effectiveness of insulin sensitisers in patients with NAFLD, to help decide whether or not a trial or trials of the insulin sensitisers was necessary and also to explore whether or not non-invasive alternatives to liver biopsy were available that could be used in a large trial of the insulin sensitisers...
November 2011: Health Technology Assessment: HTA
Jamie E Mells, Ping P Fu, Shvetank Sharma, Darin Olson, Lihong Cheng, Jeffrey A Handy, Neeraj K Saxena, Dan Sorescu, Frank A Anania
The aims of this study were designed to determine whether liraglutide, a long-acting glucagon-like peptide, could reverse the adverse effects of a diet high in fat that also contained trans-fat and high-fructose corn syrup (ALIOS diet). Specifically, we examined whether treatment with liraglutide could reduce hepatic insulin resistance and steatosis as well as improve cardiac function. Male C57BL/6J mice were pair fed or fed ad libitum either standard chow or the ALIOS diet. After 8 wk the mice were further subdivided and received daily injections of either liraglutide or saline for 4 wk...
January 15, 2012: American Journal of Physiology. Gastrointestinal and Liver Physiology
Shvetank Sharma, Jamie E Mells, Ping P Fu, Neeraj K Saxena, Frank A Anania
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is a known outcome of hepatosteatosis. Free fatty acids (FFA) induce the unfolded protein response (UPR) or endoplasmic reticulum (ER) stress that may induce apoptosis. Recent data indicate ER stress to be a major player in the progression of fatty liver to more aggressive lesions. Autophagy on the other hand has been demonstrated to be protective against ER stress-induced cell death. We hypothesized that exendin-4 (GLP-1 analog) treatment of fat loaded hepatocytes can reduce steatosis by autophagy which leads to reduced ER stress-related hepatocyte apoptosis...
2011: PloS One
J Jendle, M A Nauck, D R Matthews, A Frid, K Hermansen, M Düring, M Zdravkovic, B J Strauss, A J Garber
AIM: The effect on body composition of liraglutide, a once-daily human glucagon-like peptide-1 analogue, as monotherapy or added to metformin was examined in patients with type 2 diabetes (T2D). METHODS: These were randomized, double-blind, parallel-group trials of 26 [Liraglutide Effect and Action in Diabetes-2 (LEAD-2)] and 52 weeks (LEAD-3). Patients with T2D, aged 18-80 years, body mass index (BMI) < or =40 kg/m(2) (LEAD-2), < or =45 kg/m(2) (LEAD-3) and HbA1c 7...
December 2009: Diabetes, Obesity & Metabolism
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