Table 2. Metabolites detected in colonic feces but not in colonic tissue.
| Metbolites | ExGF/GF ratio | ||||||
|---|---|---|---|---|---|---|---|
| Category | KEGG ID | Colonic feces | Colon | Portal plasma | Cardiac plasma | ||
| 4-Methylbenzoic acid | - | 20.00 | ND | ND | ND | ||
| Hydroxyindole | C03766 | 20.00 | ND | ND | ND | Ex-GF/GF | |
| 3'-CMP; Cytidine 2'-monophosphate | Base/nucleotide | C03104 | 20.00 | ND | ND | ND | 3 |
| Pyridoxamine | C13710 | 20.00 | ND | ND | ND | 2.5 | |
| 1,3-Diaminopropane | - | 20.00 | ND | ND | ND | 2 | |
| Cadaverine | C01672 | 20.00 | ND | ND | ND | 1.5 | |
| 3-Methylbenzoic acid | C01454 | 20.00 | ND | ND | ND | 1 | |
| 3-(4-Hydroxyphenyl)propionic acid | C01456 | 20.00 | ND | ND | ND | 0.67 | |
| Saccharopine | C00449 | 1.70 | ND | ND | ND | 0.5 | |
| Indole-3-acetamide | - | 1.25 | ND | ND | ND | 0.4 | |
| Oxypurinol | C07599 | 1.21 | ND | ND | ND | 0 | |
| Allantoin | - | 0.12 | ND | ND | ND | ||
| Galactosamine | C16675 | 0.09 | ND | ND | ND | ||
| 3-Nitrotyrosine | - | 0.00 | ND | ND | ND | ||
| O-Succinylhomoserine | C03776 | 0.00 | ND | ND | ND | ||
| γ-Glu-2-aminobutanoic acid | 0.00 | ND | ND | ND | |||
| 3-Hydroxy-3-methylglutaric acid | C03761 | 0.00 | ND | ND | ND | ||
| Glucaric acid | C00767 | 0.00 | ND | ND | ND | ||
| Quinic acid | C00296 | 0.00 | ND | ND | ND | ||
| 2'-Deoxyguanosine | Base/nucleotide | C08507 | 0.41 | ND | ND | ND | |
| 2-Oxoglutaric acid | C00026 | 20.00 | ND | 1.03 | ND | ||
| 4-Methyl-2-oxovaleric acid/ 3-Methyl-2-oxovaleric acid | Alkylamino acid | C00233 | 20.00 | ND | 0.70 | ND | |
| Xanthine | Base/nucleotide | C00385 | 1.42 | ND | ND | 1.18 | |
| Butyric acid | Fatty acid | C00246 | 20.00 | ND | 1.26 | ND | |
Metabolites detected in only Ex-GF or GF mice are indicated red or green without number, respectively.