1. Norisoboldine ((+)-Laurelliptine) might be a potential therapeutic agent for rheumatoid arthritis, and it functions through protecting joint destruction as well as regulating the abnormal immune responses. 2. Norisoboldine inhibits the macrophage activation and the resultant production of pro-inflammatory cytokines via down-regulating the activation of MAPKs signaling pathways rather than NF-κB.

Norisoboldine hydrochloride, an orally active aryl hydrocarbon receptor (AhR) agonist and a prominent isoquinoline alkaloid found in Radix Linderae, is utilized for research purposes in the study of Rheumatoid Arthritis and Ulcerative Colitis [1] [2].