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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Varela, Gladys M. Antwi, Daniel A. Dhir, Ravindra Yin, Xiaoyan Singhal, Neel S. Graham, Mark J. Crooke, Roseanne M. Ahima, Rexford S. |
| Description | Country affiliation: United States Author Affiliation: Varela GM ( Department of Medicine, Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania School of Medicine, 415 Curie Blvd., 712A Clinical Research Bldg., Philadelphia, PA 19104, USA.) |
| Abstract | Diets with high fat content induce steatosis, insulin resistance, and type 2 diabetes. The lipid droplet protein adipose differentiation-related protein (ADRP) mediates hepatic steatosis, but whether this affects insulin action in the liver or peripheral organs in diet-induced obesity is uncertain. We fed C57BL/6J mice a high-fat diet and simultaneously treated them with an antisense oligonucleotide (ASO) against ADRP for 4 wk. Glucose homeostasis was assessed with clamp and tracer techniques. ADRP ASO decreased the levels of triglycerides and diacylglycerol in the liver, but fatty acids, long-chain fatty acyl CoAs, ceramides, and cholesterol were unchanged. Insulin action in the liver was enhanced after ADRP ASO treatment, whereas muscle and adipose tissue were not affected. ADRP ASO increased the phosphorylation of insulin receptor substrate (IRS)1, IRS2, and Akt, and decreased gluconeogenic enzymes and PKCepsilon, consistent with its insulin-sensitizing action. These results demonstrate an important role for ADRP in the pathogenesis of diet-induced insulin resistance. |
| File Format | HTM / HTML |
| ISSN | 01931857 |
| e-ISSN | 15221547 |
| DOI | 10.1152/ajpgi.90204.2008 |
| Journal | AJP: Gastrointestinal and Liver Physiology |
| Issue Number | 3 |
| Volume Number | 295 |
| Language | English |
| Publisher | American Physiological Society |
| Publisher Date | 2008-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Discipline Physiology Discipline Gastroenterology Fatty Liver Therapy Genetic Therapy Insulin Resistance Membrane Proteins Metabolism Oligonucleotides, Antisense Therapeutic Use Adipose Tissue Enzymology Animals Blood Glucose Dietary Fats Diglycerides Disease Models, Animal Etiology Genetics Physiopathology Homeostasis Insulin Liver Mice Mice, Inbred C57bl Muscle, Skeletal Time Factors Triglycerides Research Support, N.i.h., Extramural |
| Content Type | Text |
| Resource Type | Article |
| Subject | Hepatology Physiology Physiology (medical) Gastroenterology |
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