Cephamycin Antibiotic

Cefmetazole sodium (Sodium cefmetazole) 是具有广谱抗菌活性的半合成头孢霉素抗生素。它通过与青霉素结合蛋白结合，阻止肽聚糖的交联，导致细胞壁完整性的丧失。它可研究妇科、腹腔内、尿道、呼吸道和皮肤和软组织感染。

Cefoxitin sodium (Betacef) 是一种头霉素类抗生素。Cefoxitin 干扰细胞壁合成。它对革兰氏阴性和革兰氏阳性菌有活性。

Cefotetan Sodium, a second-generation cephalosporin, cephamycin antibiotic, is active against a wide range of both aerobic and anaerobic gram-negative and gram-positive bacteria. Cefotetan disrupts the cell wall synthesis by binding to penicillin-binding

Cephamycin C (CepC) is a nontoxic β-lactam antibiotic. CepC stands out from other cephalosporins for its greater resistance to β-lactamases.

Cefminox (Sodium) is a new cephamycin antibiotic possessing a D-amino acid moiety derived from D-cysteine at the C-7B side chain. Cefminox is active against a wide range of bacteria, especially Gram-negative and anaerobic bacteria. Cefminox shows excellent in vivo efficacy (ED50) which is higher than would be expected from its in vitro activity (MIC). Moreover, cefminox possesses more potent activity in suppression of bacterial regrowth than other cephems[1]. Cefminox (Sodium) was the most active beta-lactam, with an MIC at which 50% of isolates are inhibited (MIC50) of 1.0 microg ml and an MIC90 of 16.0 microg ml. Cefminox was especially active against Bacteroides fragilis (MIC90, 2.0 microg ml), Bacteroides thetaiotaomicron (MIC90, 4.0 microg ml), fusobacteria (MIC90, 1.0 microg ml), peptostreptococci (MIC90, 2.0 microg ml), and clostridia, including Clostridium difficile (MIC90, 2.0 microg ml)[2]. The use of a single preoperative dose of cefminox was similar in efficacy to 3 doses of cefoxitin administered every 4 hours, and that the serum and tissue concentrations attained provide adequate antibiotic coverage[3]. Moreover, cefminox as a dual agonist of IP (Prostacyclin receptor) and PPARγ (peroxisome proliferator-activated receptor-gamma) that significantly inhibits PASMC proliferation by up-regulation of PTEN (phosphatase and tensin homolog) and cAMP ( cyclic adenosine monophosphate), suggesting that it has potential for treatment of PAH(pulmonary arterial hypertension)[4].

Cefotetan (Apacef) 是一种半合成的头霉素抗生素，能抑制细胞壁合成发挥杀菌作用。