Figure 3. Plasma trimethylamine N-oxide (TMAO).
Plasma TMAO may increase with age in control mice (P = 0.066) but is lower in mice supplemented with 3,3-dimethyl-1-butanol (DMB) at 27 months of age. Plasma was collected from mice at the time the mice were euthanized and TMAO levels were determined via liquid chromatography-tandem mass spectrometry. Data are mean ± SD n = 9–22 per group. Statistics are one-way (effect of age in control mice only) ANOVA with Dunnett’s post hoc test and two-way mixed (age × treatment group) ANOVA with Šídák’s post hoc test. *P < 0.05 DMB vs. control within time point.