Loss of BAT function and activity is associated with aging. Understanding the metabolic and phenotypic changes in aging brown adipose tissue is important for healthy aging. In this study, we have characterized various brown adipose tissue depots including interscapular BAT(iBAT), cervical BAT(cBAT), and axillary BAT(aBAT) ) in aging rodent model. Fat content in all BAT depots increased with aging and reduced with β3 agonist treatment. The iBAT was more responsive to β3 intervention compared to other BAT depots. Functional genes PRDM16, PPARg, PGC1α were upregulated in BAT tissues of 3 months old animals with β3 agonist due to high metabolic activity and improved quality of BAT compared to older animals.
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