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先锋霉素是一族广谱的半合成头孢菌素,其共同母核为7-氨基头孢霉烷酸(7-ACA)。目前已获得四个有效的产品应用于临床:先锋霉素Ⅰ(Cephalothin)、Ⅱ(Cephaloridine)、Ⅲ(Cepha-loglycine)、Ⅳ(Cephalexin)。前二种可供注射用,后二种可供口服。先锋霉素有较广的抗菌谱,具杀菌作用。它在接近最低抑菌浓度时极易将细菌杀灭。对金葡菌(包括耐青药菌)、化脓链球菌、白喉杆菌、肺炎双球菌、梭状芽胞杆菌等革兰氏阳性菌和变形杆菌、大肠杆菌、肺炎杆菌、流感杆菌等革兰氏阳性菌均有很高的活力;但对绿
Vanguard ADM is a family of broad-spectrum semisynthetic cephalosporins with a common core of 7-aminocephalosporanic acid (7-ACA). At present, four effective products have been obtained for clinical application: Cephalothin, Cephaloridine, Cepha-loglycine and Cephalexin. The first two for injection, the latter two for oral administration. Vanguard ADM have a broader antibacterial spectrum, with bactericidal effect. It is very easy to kill bacteria near the minimum inhibitory concentration. Gram-positive bacteria such as Staphylococcus aureus (including resistance to green drugs), Streptococcus pyogenes, diphtheria bacilli, Streptococcus pneumoniae, Clostridium and other Gram-positive bacteria and Proteus, Escherichia coli, Klebsiella pneumoniae, The bacteria are very high vitality; but green