Prevents normal resolution and maintains chronic activation
How It Forms
Chronic inflammation exhausts Tregs
IL-10 production becomes insufficient
Th17 cells dominate
Resolution mechanisms fail
Self-Reinforcement
Th17 produces IL-17 and IL-23
These cytokines suppress Tregs
Without Tregs, no resolution
Immune system stays activated
Clinical Relevance
This cycle explains why UC patients often can't achieve lasting remission even when
inflammation temporarily decreases. The immune system has "forgotten" how to turn off.