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KMID : 1012420160250020045
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Korean Journal of Obesity
2016 Volume.25 No. 2 p.45 ~ p.49
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Rodent Models of Diet-induced Obesity
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Koh Gwan-Pyo
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Abstract
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The prevalence of obesity is rapidly increasing worldwide, and its complications such as type 2 diabetes and cardiovascular disease are also increasing. To avoid long-term damage caused by obesity and its complications, we must develop preventive measures and therapeutic agents based on the pathophysiology of human obesity. However, genetically-modified rodents are mainly used for obesity research. This type of animal model is not very suitable for the study of human obesity because environmental factors such as excessive food intake and sedentary lifestyle are major causes of the recent explosion in human obesity. Therefore, diet-induced obesity rodent models are more appropriate for research in human obesity. Type of diet, animal species, duration of food intake, age, and sex can play a role in determining body weight and levels of glucose, insulin, triglycerides, and leptin. Animal housing conditions such as the number of animals per cage, ambient temperature, and length of the light-dark cycle also influence body weight and metabolic parameters. As a result, many influencing factors should be considered in the development of an appropriate diet-induced obesity rodent model for successful obesity research.
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KEYWORD
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Diet-induced obesity, Obesity, Type 2 diabetes mellitus, Cardiovascular disease
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