一种广谱抗生素,能有效抑制RNA聚合酶和阻断大肠杆菌RNA合成。Rifampicin is an antibiotic that potently inhibits RNA polymerase and blocks RNA synthesis in Escherichia coli. The compound has been shown to inhibit α-synuclein fibrillation and disaggregate fibrils in a concentration-dependent manner. Data indicates that Rifampicin can activate the nuclear pregnane X receptor (PXR), which affects cytochrome P450, and the activity of glucuronosyltransferases and P-glycoprotein. Rifampicin has been shown to enhance CYP2C-mediated metabolism, affect compounds that are transported by P-glycoprotein and metabolized by CYP3A4, and has been used in tuberculosis studies。