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In Vitro Antimicrobial Activity of Razupenem (SMP-601, PTZ601) against Anaerobic Bacteria
Author(s) -
Chau Minh Tran,
Kaori Tanaka,
Yuka Yamagishi,
Takatsugu Goto,
Hiroshige Mikamo,
Kunitomo Watanabe
Publication year - 2011
Publication title -
antimicrobial agents and chemotherapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.07
H-Index - 259
eISSN - 1070-6283
pISSN - 0066-4804
DOI - 10.1128/aac.01038-10
Subject(s) - bacteroides fragilis , microbiology and biotechnology , prevotella , meropenem , anaerobic bacteria , bacteroides , fusobacterium , carbapenem , antimicrobial , biology , doripenem , bacteria , antibiotics , antibiotic resistance , genetics
We evaluated the in vitro antianaerobic activity of razupenem (SMP-601, PTZ601), a new parenterally administered carbapenem, against 70 reference strains and 323 clinical isolates. Razupenem exhibited broad-spectrum activity against anaerobes, inhibiting most of the reference strains when used at a concentration of ≤1 μg/ml. Furthermore, it exhibited strong activity, comparable to those of other carbapenems (meropenem and doripenem), against clinically isolated non-fragilis Bacteroides spp. (MIC90s of 2 μg/ml), with MIC90 values of 0.06, 0.03, and 0.5 μg/ml against Prevotella spp., Porphyromonas spp., and Fusobacterium spp., respectively. Clinical isolates of anaerobic Gram-positive cocci, Eggerthella spp., and Clostridium spp. were highly susceptible to razupenem (MIC90s, 0.03 to 1 μg/ml).

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