Ertapenem

Ertapenem (MK-0826) is a broad spectrum and long acting β-lactam antibiotic. Ertapenem has a broad-spectrum anti-anaerobic activity against a variety of anaerobes with a mode MIC of 0.12 μg/mL. Ertapenem can be used for the research of severe infections caused by bacteria in the skin, lungs, stomach, pelvis, and urinary tract^[1][2]. In Vitro:Ertapenem (0-100 μg/mL approximately, 48 h) is active against 99.1% of all anaerobes with a mode MIC of 0.12 μg/mL and MIC₉₀ of 1 μg/mL, and MIC’s ≥8 μg/mL for B.fragilis and B.vulgatus species, respectively^[1].
In Vivo:Ertapenem (Subcutaneous injection, 0-10 mg/kg, 0-120 h after infection, S. aureus thigh tissue infection model) shows > 3 log₁₀ CFU reduction of organism at 10 mg/kg, and maintains the activity with 3.3 and 4.4 log₁₀ CFU eliminated at 2 mg/kg^[2].
Ertapenem (Subcutaneous injection, 4h after infection, systemic infection model) is active against all gram-positive organisms, and is also active against gram-negative organisms tested with ED₅₀s of <0.25 mg/kg/dose^[2].