Improved metabolic performance of LPA5-/- mice after initial LPS treatment. Short-term metabolic cage readouts 24 h after the first LPS injection are shown. Wt and LPA5-/- mice were housed at room temperature in metabolic cages with free access to chow diet and water. Mice were injected daily with LPS (i.p., 1.4 mg/kg body weight) for 4 d. (A) water consumption, (B) food intake, (C) real-time locomotor activity, (D) mean locomotor activity, (E) real-time measurement of respiratory exchange ratio (RER), (F) mean RER, (G) real-time energy expenditure (EE) measurement, and (H) mean EE. (Data represent as mean values ± SEM for wt (n = 6) and LPA5-/- (n = 5) mice. Significance was calculated by Student’s t-test. * p < 0.05, **, p < 0.01, *** p < 0.001 compared to LPS-treated wt mice.