Ursodeoxycholic acid-2,2,4,4-d4 是 Ursodeoxycholic acid (HY-13771) 的氘代物。Ursodeoxycholic acid 是由肠道细菌转化 (cheno) 脱氧胆酸而产生的一种次级胆汁酸，是肠道屏障完整性的关键调节因子，对脂质代谢至关重要。Ursodeoxycholic acid 作为信号分子，通过与胆汁酸激活的受体相互作用发挥作用，包括 G 蛋白偶联的胆汁酸受体 5 (TGR5, GPCR19) 和法尼酯 X 受体 (FXR)。Ursodeoxycholic acid 可用于多种肝脏和胃肠道疾病的研究。Ursodeoxycholic acid 也减少 ACE2 的表达，有助于减少 SARS-CoV-2 感染。

The herbs of Heliotropium indicum.

Inhibitor of protein kinase C (PKC) ζ; attached to cell permeabilisation Antennapedia domain vector peptide. Consists of amino acids 113 - 129 of PKC ζ pseudosubstrate domain linked by a disulphide bridge to the Antennapedia domain vector peptide. The Antennapedia peptide is actively taken up by intact cells, at 4 or 37°C, ensuring rapid and effective uptake of the inhibitor peptide. Once inside the cell, the disulphide bonds are subjected to reduction in the cytoplasm leading to release of the inhibitor peptide. Induces mast cell degranulation by a PKC ζ-independent pathway.