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红霉素是从一种链丝菌中提取出来的,它的抗菌谱与青霉素相似,但抗菌效力不及青霉素。它作用于核糖体50S亚基,可能与P位结合,阻止tRNA从A位移到P位,抑制肽链延长,阻碍蛋白质合成而呈现抗菌作用。它对各种G~+细菌如:金葡菌、链球菌、肺炎球菌。白喉杆菌等敏感,还对G—E百日咳杆菌、流感杆菌、脑膜炎双球菌等有效,对立克次氏体,阿米巴原虫,滴虫及钩端螺旋体亦有作用。临床上是治疗耐药金葡菌和溶血性链球菌的首选药物。用于肺炎败血症,
Erythromycin is extracted from a streptococcus, its antibacterial spectrum and penicillin similar, but less effective than antibacterial penicillin. It acts on ribosomal 50S subunit, which may bind to P site, prevent tRNA from A site to P site, inhibit the extension of peptide chain, hinder the protein synthesis and present an antibacterial effect. It is a variety of G ~ + bacteria such as: Staphylococcus aureus, Streptococcus, pneumococcus. Diphtheria bacillus and other sensitive, but also on the G-E Bordetella pertussis, influenza bacilli, meningococcus and other effective, against rickettsia, amoebae, trichomoniasis and leptospirosis also play a role. Clinic is the treatment of drug-resistant Staphylococcus aureus and hemolytic streptococcus drug of choice. For pneumonia sepsis,