Tazobactam is a potent inactivator of selected inhibitor-resistant class A beta-lactamases.

Tazobactam is a potent inactivator of selected inhibitor-resistant class A beta-lactamases.
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他唑巴坦是一种有效的灭活剂,可抑制某些抑制剂耐药的 A 类 β-内酰胺酶。

DOI:
10.1111/j.1574-6968.1997.tb10267.x
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发表时间:
1997
影响因子:
2.1
通讯作者:
Shlaes,DM
Shlaes,DM
中科院分区:
生物学4区
文献类型:
--
作者:
Bonomo,RA;Rudin,SA;Shlaes,DM

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针对所选的 TEM 和 OHIO-1 品种的抑制剂抗性 A 类 β-内酰胺酶,测试了 β-内酰胺 β-内酰胺酶抑制剂组合(氨苄西林/克拉维酸、氨苄西林/舒巴坦、替卡西林/克拉维酸和哌拉西林/他唑巴坦)。最低抑制剂浓度 (MIC) 显示,具有 OHIO-1 β-内酰胺酶、OHIO-1 β-内酰胺酶的 Met69Ile 突变体、TEM-30 (Arg244Ser) 和 TEM-31 (Arg244Cys) β-内酰胺酶的大肠杆菌DH5α 转缀合物菌株对哌拉西林和哌拉西林/他唑巴坦。每种 β-内酰胺酶的动力学实验表明,他佐巴坦对抗 TEM-30 和 TEM-31 β-内酰胺酶的效力比克拉维酸或舒巴坦强 10-25 倍。他佐巴坦对于 OHIO-1 β-内酰胺酶的 Met69Ile 突变体也与克拉维酸一样有效。在临床上可用的 β-内酰胺和 β-内酰胺酶抑制剂中,哌拉西林/他佐巴坦似乎是对抗 TEM 和 OHIO-1 β-内酰胺酶选定抑制剂耐药菌株的最有效组合。
The β-lactam β-lactamase inhibitor combinations (ampicillin/clavulanate, ampicillin/sulbactam, ticarcillin/clavulanate and piperacillin/tazobactam) were tested against selected inhibitor-resistant class A β-lactamases of the TEM and OHIO-1 varieties. Minimum inhibitor concentrations (MIC) revealed that theEscherichia coliDH5α transconjugate strains that possessed the OHIO-1 β-lactamase, Met69Ile mutant of the OHIO-1 β-lactamase, TEM-30 (Arg244Ser) and TEM-31 (Arg244Cys) β-lactamase were most susceptible to piperacillin and piperacillin/tazobactam. Kinetic experiments with each β-lactamase demonstrated that tazobactam was 10-25-fold more potent than clavulanate or sulbactam against TEM-30 and TEM-31 β-lactamase. Tazobactam was also as effective as clavulanate against the Met69Ile mutant of the OHIO-1 β-lactamase. Among the clinically available β-lactams and β-lactamase inhibitors, piperacillin/tazobactam appears to be the most potent combination against selected inhibitor-resistant strains of TEM and OHIO-1 β-lactamase.
A 类 β-内酰胺酶 69 和 242 位突变的互补作用。
DOI: --
发表时间: 1995
期刊: Biochimica et Biophysica Acta
影响因子: --
作者:
R. Bonomo;Charles G. Dawes;J. Knox;D. Shlaes
通讯作者: D. Shlaes
Ile-69 和 Thr-182 残基对 IRT-3 (TEM-32) β-内酰胺酶动力学特征的影响
DOI: 10.1128/aac.40.10.2434
发表时间: 1996
影响因子: 4.9
作者:
S. Farzaneh;E. B. Chaibi;J. Péduzzi;M. Barthélémy;R. Labia;J. Blázquez;F. Baquero
通讯作者: F. Baquero
DOI: 10.1128/aac.39.2.427
发表时间: 1995-02-01
影响因子: 4.9
作者:
HENQUELL, C;CHANAL, C;SIROT, J
通讯作者: SIROT, J