Research Article

Identification of Urinary Biomarkers of Colon Inflammation in IL10-/- Mice Using Short-Column LCMS Metabolomics

Table 1

Biomarker Candidate ions (m/z) selected from Short-Column LCMS and LC-MS/MS analysis of urine samples from IL10-/- and wild-type (WT) mice.

Short-Column LCMS Biomarker ion ( )Average fold change Log2 (IL10−/−/WT) valueEarly difference observedIdentification,

Negative ions

 2041.8 (expt. 1) .01 (FDR 0.05)Yxanthurenic acid
2.5 (expt. 2) .01 (FDR 0.05)
 308−1.5 (expt. 1) .01 (FDR 0.05))? (expt. 1)unknown
−1.8 (expt. 2) .01 (FDR 0.05)Y (expt. 2)
 380−1.1 (expt. 1) .01N (expt. 1)xanthurenic acid glucuronide
−1.6 (expt. 2) .01Y (expt. 2)
 453−1.5 (expt. 1) .01 (FDR 0.05)N (expt. 1) -CEHC glucuronide
−2.0 (expt. 2) .01 (FDR 0.05)Y (expt. 2)
 495−1.5 (expt. 1) .01 (FDR 0.05)Y (expt. 1)unknown
−2.2 (expt. 2) .01 (FDR 0.05)Y (expt. 2)

Positive ions

 2061.7 (expt. 1) .01 (FDR 0.05)Y (expt. 1)xanthurenic acid
1.2 (expt. 2) .01N (expt. 2)
 382−1.2 (expt. 1) .01N (expt. 1)xanthurenic acid glucuronide
−1.5 (expt. 2) .01 (FDR 0.05)Y (expt. 2)
 497−1.2 (expt. 1) .01Y (expt. 1)unknown
−1.4 (expt. 2) .01 (FDR 0.05)Y (expt. 2)