PMID- 21298865 OWN - NLM STAT- MEDLINE DCOM- 20110303 LR - 20201209 IS - 0368-2781 (Print) IS - 0368-2781 (Linking) VI - 63 IP - 4 DP - 2010 Aug TI - [Evaluation of target attainment rate of pazufloxacin mesilate using Monte Carlo simulation method]. PG - 319-25 AB - We calculated achievement rates of target attainment of AUC/MIC using Monte Carlo simulation (MCS). Two doses of pazufloxacin mesilate (PZFX) between q.d. and b.i.d. were compared for each species of bacterium. Concentrations for AUC of PZFX of 8 patients were measured at this hospital, and those from a phase I clinical study (phase I, 6 healthy volunteers) were used. MICs of PZFX were determined for each species of bacterium of respiratory organ origin (Pseudomonas aeruginosa, Haemophilus influenzae, Streptococcus pneumoniae, and Klebsiella pneumoniae). AUC per day of 500 mg b.i.d. used twice AUC (PZFX 500 mg x 2/day by patient, PZFX 500 mg x 2/day by phase I). Target attainment of AUC/MIC was AUC/MIC > or = 30 in S. pneumoniae and AUC/MIC > or = 125 in the other species of bacteria (P. aeruginosa, H. influenzae, and K. pneumoniae). As a result, patients showed an about 3 times higher AUC than the phase I subjects (67.9/21.9 microg/mL). In addition, the target attainment of AUC/MIC showed the highest rate in PZFX 500 mg x 2/day in patients with each type of bacteria: H. influenzae (98%), K. pneumoniae (89%), S. pneumoniae (66%), and P aeruginosa (41%). Target attainment of AUC/MIC was H. influenzae (91%), K. pneumoniae (81%), P. aeruginosa (5%), and S. pneumoniae (0%) in phase I. Therefore, the effectiveness of PZFX was estimated to be low using the MCS method with the phase I data. FAU - Abe, Noriuyuki AU - Abe N AD - Department of Clinical Pathology, Tenri Hospital. FAU - Fukuda, Saori AU - Fukuda S FAU - Nakamura, Akihiro AU - Nakamura A FAU - Taguchi, Yosio AU - Taguchi Y FAU - Matsuo, Shuji AU - Matsuo S LA - jpn PT - Journal Article PL - Japan TA - Jpn J Antibiot JT - The Japanese journal of antibiotics JID - 0154402 RN - 0 (Antitubercular Agents) RN - 0 (Fluoroquinolones) RN - 0 (Oxazines) RN - 4CZ1R38NDI (pazufloxacin) SB - IM MH - Adolescent MH - Antitubercular Agents/administration & dosage/pharmacokinetics/*pharmacology MH - Community-Acquired Infections/*microbiology MH - Drug Resistance, Bacterial MH - Fluoroquinolones/administration & dosage/pharmacokinetics/*pharmacology MH - Haemophilus influenzae/*drug effects/isolation & purification MH - Humans MH - Klebsiella pneumoniae/*drug effects/isolation & purification MH - *Monte Carlo Method MH - Oxazines/administration & dosage/pharmacokinetics/*pharmacology MH - Pneumonia, Bacterial/*microbiology MH - Pseudomonas aeruginosa/*drug effects/isolation & purification MH - Streptococcus pneumoniae/*drug effects/isolation & purification MH - Young Adult EDAT- 2011/02/09 06:00 MHDA- 2011/03/04 06:00 CRDT- 2011/02/09 06:00 PHST- 2011/02/09 06:00 [entrez] PHST- 2011/02/09 06:00 [pubmed] PHST- 2011/03/04 06:00 [medline] PST - ppublish SO - Jpn J Antibiot. 2010 Aug;63(4):319-25.