Overview
Ulcerative colitis (UC) is a chronic inflammatory bowel disease characterized by inflammation of the colon. While effective therapies exist, the underlying pathophysiological mechanisms, particularly shared pathways with other inflammatory conditions like psoriasis, are still being elucidated 1.Diagnosis
Management
Shared gene signatures in lesional tissue between psoriasis and ulcerative colitis suggest dysregulated pathways including interferon signaling, IL-23 pathway, and Th17 pathway 1.
Elevated expression of costimulatory molecules ICOS and CTLA4 indicates ongoing T-cell activation in both diseases 1.
A gene set improvement score can reflect post-treatment molecular improvement in UC 1.Special Populations
Key Recommendations
Understanding shared molecular pathways, such as interferon signaling and the IL-23 pathway, may provide insights into UC pathophysiology and treatment targets 1. (Evidence: Moderate)
Monitoring T-cell activation markers like ICOS and CTLA4 may be relevant in the context of UC inflammation 1. (Evidence: Weak)
Transcriptomic analysis can potentially assess molecular improvement following treatment for UC 1. (Evidence: Weak)References
1 Xi L, Garcet S, Ye Z, Hung K, Hassan-Zahraee M, Kieras E et al.. A shared tissue transcriptome signature and pathways in psoriasis and ulcerative colitis. Scientific reports 2022. link