Abstract
In addition to its enormous impacts on an individuals quality of life, obesity is a daunting health problem in the world today and the increasing rate of obesity is now causing a severe burden on health care systems. Fortunately, the normalization or reduction of increased body fat reverses the obesity-associated morbidities, such as hypertension, glucose intolerance, dyslipidemia, and fatty liver diseases. However, the modification of lifestyle in a case of established clinical obesity is very difficult to achieve. Recent breakthroughs in relation to the molecular mechanism regulating body weight and energy metabolism give us hopes for the development of anti-obesity drugs. Even with the high social demand for an effective treatment for obesity and extensive researches, both in academia and the pharmaceutical industry, only two weight-loss drugs, sibutramine and orlistat, have been approved by the FDA for long-term treatment. In addition, the current bottleneck in drug discovery shows that a more detailed understanding of the pathogenesis of obesity is an essential element for the development of efficacious treatment. In this review article, we focus on the structural origin of chemical entities for anti-obesity treatment along with the rationale for drug discovery, rather than categorizing the clinical efficacy or pharmacological target of obesity. For the clarification of the structural origin, we formed a collection with 4 major groups, including natural products, natural product mimetics, synthetic small molecules, and peptides/hormones. This analysis might provide strategic plans for medicinal chemists, biologists, and physicians to begin an optimistic era with a new class of pharmaceutical adjuncts for obesity therapy.
Keywords: Obesity, satiety, energy expenditure, structural origins, anti-obesity drugs
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