Spermine (Neuridine) 是人体内源性多胺类物质,作为一个直接的自由基清除剂,具有抗病毒作用,能够保护 DNA 免受自由基的攻击,同时也是细胞增殖、分化、凋亡的关键调控因子。Spermine 能够抑制某些细菌,尤其是金黄色葡萄球菌菌株。Spermine 剂量依赖性地引起纹状体神经毒性。Spermine 可逆地抑制小鼠脾细胞原代培养中的 DNA 合成反应、混合淋巴细胞反应和溶细胞淋巴细胞反应的诱导。
Oxybuprocaine is an ester-type local anesthetic that is used especially in ophthalmology and otolaryngology. Oxybuprocaine binds to sodium channels and reversibly stabilizes the neuronal membrane which decreases its permeability to sodium ions.