Fig. 1. Bactericidal effect of guinea-pig complement against E. coil NIHJ JC-2, P. aeruginosa 18 S and S. aureus 209 P
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2 Fig. 1. Bactericidal effect of guinea-pig complement against E. coil NIHJ JC-2, P. aeruginosa 18 S and S. aureus 209 P
3 Table 1. IDsos of the test antibiotics against each strain of bacterium Fig. 2. Synergy of bactericidal effects between complement and first-or second-generation cephem antibiotics against E. coli
4 Fig. 3. Synergy of bactericidal effects between complement and third-generation cephem antibiotics against E. coli ( 1 ) Fig. 4. Synergy of bactericidal effects between complement and third-generation cephem antibiotics against E. coli ( 2 )
5 without complement with 10.0U complement/ml and 20% inactivated human serum Fig. 5. Synergy of bactericidal effects between complement and antipseudomonal cephem antibiotics against P.aeruginosa _ without complement with 8.0U complement/ml and 20% inactivated human serum Fig. 6. Synergy of bactericidal effects between complement and cephem antibiotics against S. aureus
6 2) GIGLI I, NELSON JR. R A : Complement dependent immune phagocytosis I. Requirements for C'1, C'4, C'2, C'3. Exp Cell Res 51 : 45 `67, ) GRIFFIN JR. F M, BIONCO C, SILVERSTEIN S C: Characterization of the macrophage for complement and demonstration of its functional independence from the receptor for the Fc. J Exp Med 141 : 1269 `1277, ) MANTOVANI B, RAVINOVICH M, NUSENZEIG V: Phagocytosis of immunecomplex by macrophages. Different roles of the macrophage receptor sites for complement (C 3) and for immunoglobulin (IgG). J Exp Med 135: 780 `792, ) REYNOLDS H Y, ATKINSON J P, NEWBALL H H, FRANK M M : Receptors for immunoglobulin and complement on human alveolar macrophages. J Immunol 114 : 1813 `4819, ) SHIN H S, SMITH M R, WOOD JR. R B: Heat labile opsonins to Pneumococcus. II Involvement of C 3 and C 5. J Exp Med 130 : 1229 ` 1241, ) WINKELSTEIN J A, SHIN H S, WOOD JR. W B: Heat labile opsonins to Pneumococcus. HI The participation of immunoglobulins and of alternate pathway of C 3 activation. J Immunol 108 : 1681 `4689, ) INOUE K, TANIGAWA Y, TAKUBO M, SATANI M, AMANO T: Quantitative studies on immune bacteriolysis II. The role of lysozyme in immune bacteriolysis. Biken J 2 : 1, `20, ) INOUE K, TAKAMIZAWA A, KURIMURA T, /WANO K : Studies on the immune bacteriolysis. Biken J 11 : 193 `201, ) TIPPER D J, STROMINGER J L : Biosynthesis of the peptidoglycan of bacterial cell walls. XII Inhibition of crosslinking by penicillins and cephalosporins : Studies in Staphylococcus aureus in vivo. J Biol Chem 243: 3169 `3179, ) IZAKI K, MATSUHASHI M, STROMINGER M : Biosynthesis of the peptidoglycan of bacterial cell walls. XII Peptidoglycan transpeptidase and D-alanine carboxypeptidase : Penicillinsensitive enzymatic reaction in strains of Escherichia coll. J Biol Chem 243 : 3180 ` 3192, ) DUTCHER B S, REYNARD A M, BECK M E, CUN- NINGHAM R K: Potentiation of antibiotic bactericidal activity by normal human serum. Antimicrob Agents Chemother 13 : 820 `826, `43, ) STANDIFORD H C, DRUSANO G L, FITZPATRICK B, TATEM B, SCHIMPFF S C : Bactericidal activity of ceftazidime in serum compared with
7 that of ticarcillin combined with amikacin. Antimicrob Agents Chemother 26 : 339 `342, ) BERGERON M G, LeBEL M, CHAREST A, FOCIER 3 F, MORINE 3, VALLEE F: Comparative study of serum bactericidal activity of cefotaxime alone or in combination with tobramycin. Antimicrob Agents Chemother 29 : 379 `381, ) PASCUAL-LOPEZ A, VAN DER AUERA P, LIEPPE S, KLASTERSKY J : BRL : In vitro studies and assessment of serum bactericidal activity after single-dose administration in volunteers. Antimicrob Agents Chemother 29 : 757 ` 759, ) VAN DER AUERA P, KLASTERSKY J, LAGAST H, HUSSON M : Serum bactericidal activity and killing rate for volunteers receiving imipenem, imipenem plus amikacin, and ceftazidime plus plus amikacin against Pseudomonas aeruginosa. Antimicrob Agents Chemother 30 : 122 `126, ) OGATA T : Fundamental principles to highly sensitive serological tests for syphilis. Jap J Microbiol 1: 423 `431, ) MAYER M M : Complement and fixation, Experimental Immunochemistry (2 nd. Ed.) Springfield, 1 L, C. C. Thomas Publisher, pp.133 `240, ) HOFFSTEDT B, WALDER M R : Influence of serum protein binding and mode of administration on penetration of five cephalosporins into subcutaneous tissue fluid in humans. Antimicrob Agents Chemother 20 : 783 `786, ) WATANABE Y, HAYASHI T, TAKEDA R, YASUDA T, SAIKAWA I : Studies on protein binding of antibiotics I. Effect of cefazolin on protein binding and pharmacokinetics of cefoperazone. J Antibio 33 : 625 `635, 1980 SYNERGY OF BACTERICIDAL EFFECTS BETWEEN COMPLEMENT AND CEPHEM ANTIBIOTICS AGAINST ESCHERICHIA COLI, PSEUDOMONAS AERUGINOSA AND STAPHYLOCOCCUS AUREUS HIROSHI KIYOTA Department of Urology, The Jikei University, School of Medicine, Nishishinbashi, Minato-ku, Tokyo 105, Japan We investigated the influence of the 50% growth inhibitory dose (ID50) of cephem antibiotics on the sub-lethal concentration of complement against Escherichia coli NIHJ JC-2, Pseudomonas aeruginosa 18 S and Staphylococcus aureus 209 P.The number of E. coli survivors decreased more rapidly in the presence of both the complement and the ID50 of the antibiotic than of either alone, with a few exceptions. Cefmenoxime and ceftizoxime manifested synergy with complement and all cells of E.coli were killed 24 hours after the initiation of incubation. In contrast, latamoxef and aztreonam showed synergistic bactericidal effect with complement on E. coli 5 hours after the initiation of incubation. Bactericidal effects of cefazolin and cefoperazone were diminished by the addition of complement. Synergy was not observed between the ID50 of cephem antibiotics and complement against P. aeruginosa and S. aureus. The possible role of the interaction between cephem antibiotics and complement in the in vivo efficacy is described.
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