Randialic acid B, a triterpenoid compound, is a formyl peptide receptor 1 (FPR1) antagonist. Randialic acid B blocks FPR1 in human neutrophils and attenuates psoriasis-like inflammation in vivo.

Randialic acid B (0.1-3 μM; for 5 min) selectively inhibits reactive oxygen species production, elastase release, and CD11b expression in human neutrophils activated by FPR1. Randialic acid B inhibits the binding of N-formyl peptide to FPR1 in human neutrophils, neutrophil-like THP-1 cells, and hFPR1-transfected HEK293 cells, indicating FPR1 antagonism.
Randialic acid B acts competitively for its binding to the FPR1 receptor. The FPR1-downstream signaling such as Ca²⁺ mobilisation and activation of Akt and MAPKs is also competitively inhibited.
Randialic acid B shows significant cell-protective effects against H2O2-induced H9c2 cardiomyocyte injury.

西域 has not independently confirmed the accuracy of these methods. They are for reference only.

Randialic acid B (10 mg/kg; i.v.; every other day; for 5 days) significantly reduces Imiquimod-induced psoriasis-like symptom, including epidermal hyperplasia, desquamation with scaling, neutrophil skin infiltration, and transepidermal water loss.

西域 has not independently confirmed the accuracy of these methods. They are for reference only.

Randialic acid B (10 mg/kg; i.v.; every other day; for 5 days) significantly reduces Imiquimod-induced psoriasis-like symptom, including epidermal hyperplasia, desquamation with scaling, neutrophil skin infiltration, and transepidermal water loss.

西域 has not independently confirmed the accuracy of these methods. They are for reference only.

• . Michal Korinek, et al. Randialic acid B and tomentosolic acid block formyl peptide receptor 1 in human neutrophils and attenuate psoriasis-like inflammation in vivo. Biochem Pharmacol. 2021 Aug;190:114596.  [Content Brief]

  . Shan-Shan Li, et al. Three new triterpenoids isolated from the aerial parts of Ilex cornuta and protective effects against H 2 O 2-induced myocardial cell injury. Chin J Nat Med. 2017 Feb;15(2):115-120.  [Content Brief]