Abstract
Obesity is a pandemic metabolic syndrome with increasing incidences every year. Among the significant factors that lead to obesity, overconsumption of high-fat food in daily intake is always the main contributor. Functional foods have shown a positive effect on disease prevention and provide health benefits, including counteracting obesity problem. Vinegar is one of the fermented functional beverages that have been consumed for many years, and different types of vinegar showed different bioactivities and efficacies. In this study, we investigated the potential effects of pineapple vinegar as an antiobesity agent on a high-fat diet- (HFD-) induced C57BL/6 obese mice. C57BL/6 mice were treated with pineapple vinegar (1 mL/kg BW and 0.08 mL/kg BW) for 12 weeks after 24 weeks of HFD incubation. Serum biochemistry profiles, antioxidant assays, qPCR, proteome profiler, and 16S metagenomic were done posttreatment. Our data showed that a high concentration of pineapple vinegar (1 mL/kg BW) treatment significantly (p < 0.05) reduced the bodyweight (∼20%), restored lipid profiles, increased the antioxidant activities, and reduced the oxidative stress. Besides, significant (p < 0.05) regulation of several adipokines and inflammatory-related genes was recorded. Through the regulation of gut microbiota, we found a higher abundance of Akkermansia muciniphila, a microbiota reported to be associated with obesity in the high concentration of pineapple vinegar treatment. Collectively, these data established the mechanism of pineapple vinegar as antiobesity in mice and revealed the potential of pineapple vinegar as a functional food for obesity.
Highlights
Excessive consumption of food and an imbalanced diet has led to severe obesity issues in many people
Adipocyte plays essential roles in fat storage and involves in Evidence-Based Complementary and Alternative Medicine metabolic function and endocrine system of the body [7]. e alteration of adipose tissue leads to an increase of proinflammatory molecules and adipokines [8]. e relationship between obesity and inflammation has been studied for many years, and it was found that inflammation is one of the significant indicators linking to obesity [9, 10]
All mice were acclimatized for seven days and were given standard pellet diet and distilled water ad libitum. e mice were placed in plastic cages at room temperature (22 ± 1°C) with 12 h of dark/light cycle and relative humidity approximately 60%. is study was done according to the guidelines and was approved by the Institution Animal Care and Use Committee (IACUC), Universiti Putra Malaysia (UPM/IACUC/AUP-R097/ 2014)
Summary
Pineapple Vinegar Regulates Obesity-Related Genes and Alters the Gut Microbiota in High-Fat Diet (HFD) C57BL/6 Obese Mice. We investigated the potential effects of pineapple vinegar as an antiobesity agent on a high-fat diet- (HFD-) induced C57BL/6 obese mice. Rough the regulation of gut microbiota, we found a higher abundance of Akkermansia muciniphila, a microbiota reported to be associated with obesity in the high concentration of pineapple vinegar treatment. These data established the mechanism of pineapple vinegar as antiobesity in mice and revealed the potential of pineapple vinegar as a functional food for obesity
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