UA increases EE and adaptive thermogenesis.
(A) Oxygen consumption measured by calorimetry in UA-treated and control mice (n = 6). (B) EE. (C) EE values adjusted for lean mass using ANCOVA. (D) Regression of EE against lean mass. (E) Locomotor activity measured by calorimetry in UA-treated and control mice (n = 6). (F) RER. (G) The body temperature of mice placed at room temperature (21°C) (n = 6). (H) Representative infrared images of mice. Images are displayed using the rainbow high-contrast color palette in FLIR Research. (I) Body temperature of mice placed at 4°C at the indicated time points (n = 6). (J) Oxygen consumption. (K) NE-stimulated whole-body oxygen consumption in mice at 4°C (n = 6). The underlying data for this figure can be found in S1 Data. EE, energy expenditure; NE, norepinephrine; RER, respiratory exchange ratio; UA, urolithin A.