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Abstract Title:

Melatonin reduces obesity and restores adipokine patterns and metabolism in obese (ob/ob) mice.

Abstract Source:

Nutr Res. 2015 Jul 6. Epub 2015 Jul 6. PMID: 26250620

Abstract Author(s):

Gaia Favero, Alessandra Stacchiotti, Stefania Castrezzati, Francesca Bonomini, Massimo Albanese, Rita Rezzani, Luigi Fabrizio Rodella

Article Affiliation:

Gaia Favero

Abstract:

The increasing incidence of obesity, leading to metabolic complications, is now recognized as a major public health problem. The adipocytes are not merely energy-storing cells, but they play crucial roles in the development of the so-called metabolic syndrome due to the adipocyte-derived bioactive factors such as adipokines, cytokines, and growth factors. The deregulated production and secretion of adipokines seen in obesity is linked to the pathogenesis of the metabolic disease processes. In this study, we hypothesized that dietary melatonin administration would support an anti-inflammatory response and play an important role in energy metabolism in subcutaneous and visceral adipose tissues of obese mice and so may counteract some of the disruptive effects of obesity. Lean and obese mice (ob/ob) received melatonin or vehicle in drinking water for 8 weeks. Thereafter, they were evaluated for morphologic alteration, inflammatory cell infiltration, and the adipokine patterns in visceral and subcutaneous white fat depots. In obese mice treated with vehicle, we observed a significant increase in fat depots, inflammation, and a deregulation of the adipokine network. In particular, we measured a significant reduction of adiponectin and an increase of tumor necrosis factorα, resistin, and visfatin in adipose tissue deposits. These changes were partially reversed when melatonin was supplemented to obese mice. Melatonin supplementation by regulating inflammatory infiltration ameliorates obesity-induced adipokine alteration, whereas melatonin administration in lean mice was unaffected. Thus, it is likely that melatonin would be provided in supplement form to control some of the disruptive effects on the basis of obesity pathogenic process.

Study Type : Animal Study

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Sayer Ji
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