Sulbactam (SBT)とCefoperazon (CPZ)の前立腺組織内への移行について

Abstract

前立腺摘除術を受けた20症例にSBT/CPZを2 g投与し, 1時間後に血清および前立腺組織内について同一の条件下で採取し, SBT, CPZ濃度を測定した.1)血清濃度はCPZの方がSBTより有意に(p<0.01)高値に維持されていた.2)前立腺組織内濃度はCPZの方がSBTより有意に(p<0.05)高かった.3)前立腺組織内移行性は2剤間で異なり, 対血清比はSBTの方がCPZより有意に(p<0.05)高かった

Diffusion of sulperazone (SBT) and cefoperazone (CPZ) into the prostatic tissue was studied in 20 cases. Two g of SBT/CPZ was injected intravenously and 1 hour later, prostatic tissue was obtained surgically and venous blood was drawn simultaneously. The serum concentration of CPZ (58.0 micrograms/ml +9.2) was higher than that of SBT (25.9 micrograms/ml +/- 9.3) and the prostatic tissue concentration of CPZ (14.9 micrograms/ml +/- 6.1) was higher than that of SBT (10.9 micrograms +/- 6.1). However, the SBT concentration ratio of prostatic tissue to serum level (P/S ratio) was significantly higher (42.5%) than that of CPZ (25.9%). The SBT concentration in the prostatic tissue was high enough to enhance the antibacterial activity of CPZ. SBT/CPZ was appraised to be an effective chemotherapeutic agent for infections of prostate caused by susceptible organisms, especially by beta-lactamase producing bacteria.