LC-QToF-Based Metabolomics Identifies Aberrant Tissue Metabolites Associated with a Higher-Fat Diet and Their ‘Reversion to Healthy’ with Dietary Probiotic Supplementation
2023
Allyson Dailey | Gloria Solano-Aguilar | Joseph F. Urban | Robin D. Couch
Over 33% of Americans are labeled as obese, leading the World Health Organization to designate obesity as a major public health problem. One consequence of obesity is the development of metabolic syndrome, a condition which has been correlated to an increased risk for developing cardiovascular disease and Type 2 diabetes. Prolonged ingestion of a higher-fat diet, one cause of obesity, results in alterations to the gut microbiome. These alterations are implicated to have a profound role in the evolution and progression of obesity-linked diseases. Probiotics are associated with positive health effects such as limiting pathogen colonization, aiding in digestion, and vitamin synthesis. Using Ossabaw pigs as a model for obesity, and in conjunction with our previous research, we performed an in-depth, nontargeted, metabolomic analysis on select organs to elucidate the effects of dietary supplementation with the probiotic <i>Lacticaseibacillus paracasei</i>. We focused our analysis on the effects of probiotic supplementation on a higher-fat (obesogenic) diet and a nutritionally balanced diet. Notably, our findings reveal that the brain cortex is highly sensitive to dietary influencers, and with probiotic supplementation, several aberrant metabolites associated with a higher-fat diet revert to healthy levels, thus demonstrating the potential for a probiotic intervention for obesity-linked disease.
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