Table 1

Mucosal thiol methyltransferase (TMT), rhodanese (RHOD), and thiopurine methyltransferase (TPMT) activity at each site throughout the gastrointestinal tract

TMT activity (pmol/mg/min)RHOD activity (nmol/mg/min)TPMT activity (pmol/mg/min)
Oesophagus 17.6 (5.4) (n=6) 46.7 (18.1) (n=6) 66.8 (12.2) (n=6)
Stomach 51.5 (11.9) (n=9)127.6 (26.1) (n=9)189.2 (37.9) (n=9)
Small intestine 91.7 (16.7) (n=9)157.6 (26.0) (n=9)156.4 (35.8) (n=9)
Right colon114.4 (15.9) (n=8)292.4 (80.9) (n=6)182.5 (34.2) (n=8)
Left colon 82.4 (16.8) (n=11)245.6 (38.9) (n=10)209.5 (31.5) (n=11)
Rectum 72.4 (10.7) (n=7)253.9 (39.4) (n=7)223.3 (21.1) (n=7)
Values are mean (SEM).