The present invention discloses the use of 4-chloro-3-ethylphenol in the preparation of drugs for preventing or treating
ulcerative colitis and
sepsis, and relates to the field of
biomedical technology. It is experimentally confirmed in the present invention that the
ryanodine receptor (RyRs)
agonist 4-chloro-3-ethylphenol has significant effects in preventing or treating
ulcerative colitis and
sepsis, and 4-chloro-3-ethylphenol is a clinically potential
drug for the preparation of drugs for preventing or treating
ulcerative colitis and
sepsis; meanwhile, using 4-chloro-3-ethylphenol as a reliable tool can clearly distinguish the two components of store-operated
calcium channels (SOCE), that is, inducing ER / Ca<supgt;2+< / supgt; release through RyR, but blocking the entry of Ca<supgt;2+< / supgt; through SOC in vascular endothelial cells, having a
dual effect; further experiments confirm that pure endothelial
cell RyR / ER / Ca<supgt;2+< / supgt> release is a unique pathway for regulating EDH-mediated
arterial vasodilation in a healthy state and has an anti-inflammatory effect on ulcerative
colitis and sepsis.