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• W2904756895 abstract "KBP-7072 is a novel aminomethylcycline antibiotic in clinical development for community-acquired pneumonia. The goal of present studies was to determine which pharmacokinetic/pharmacodynamic (PK/PD) parameter magnitude correlated with efficacy in the murine pneumonia infection model against Staphylococcus aureus and Streptococcus pneumoniae KBP-7072 pharmacokinetic measurements were performed in plasma and epithelial lining fluid (ELF) at 4-fold-increasing doses from 1 to 256 mg/kg of body weight subcutaneously. Pharmacokinetic parameters were calculated using a noncompartmental model and were linear over the dose range. Penetration into ELF ranged from 82% to 238% comparing ELF drug concentrations to plasma free drug concentrations. Twenty-four-hour dose-ranging efficacy studies were then performed in the neutropenic murine pneumonia model against 5 S. aureus (3 methicillin-resistant and 2 methicillin-susceptible) and 6 S. pneumoniae (2 Tetr and 2 Penr) strains. KBP-7072 demonstrated potent in vivo activity resulting in a 3- to 5-log10 kill in CFU burden compared to the start of therapy for all strains. The PK/PD index area under the concentration-time curve (AUC)/MIC corelated well with efficacy (R2, 0.80 to 0.89). Net stasis was achieved at plasma 24-h free drug AUC/MIC values of 1.13 and 1.41 (24-h ELF AUC/MIC values of 2.01 and 2.50) for S. aureus and S. pneumoniae, respectively. A 1-log10 kill was achieved at 24-h plasma AUC/MIC values of 2.59 and 5.67 (24-h ELF AUC/MIC values of 4.22 and 10.08) for S. aureus and S. pneumoniae, respectively. A 2-log10 kill was achieved at 24-h plasma AUC/MIC values of 7.16 and 31.14 (24-h ELF AUC/MIC values of 8.37 and 42.92) for S. aureus and S. pneumoniae, respectively. The results of these experiments will aid in the rational design of dose-finding studies for KBP-7072 in patients with community-acquired bacterial pneumonia (CAP)." @default.
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• W2904756895 date "2019-03-01" @default.
• W2904756895 modified "2023-10-17" @default.
• W2904756895 title "Pharmacokinetic/Pharmacodynamic Evaluation of a Novel Aminomethylcycline Antibiotic, KBP-7072, in the Neutropenic Murine Pneumonia Model against Staphylococcus aureus and Streptococcus pneumoniae" @default.
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• W2904756895 doi "https://doi.org/10.1128/aac.02404-18" @default.
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