Fig 8. SERT function in response to TGF-β1 treatment of native mouse ileum.

The distal small intestine was stripped off of the muscle layer, mounted in the Ussing chamber to expose tissue on both sides to Kreb’s solution supplemented with L-ascorbic acid (100 μM) and the monoamine oxidase inhibitor pargyline (100 μM). Tissues were treated with TGF-β1 for 1h from basolateral side and then incubated with ³[H]-5-HT for 30 min. Fluoxetine (10 μM) was added 30 min prior to TGF-β1 treatment from the apical side. Values represent mean ± SEM of 3 different experiments. *P<0.05 compared with untreated control.