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Rifampicin과 Ofloxacin에 내성인 Bifidobacterium bifidum 균주의 개발
정영자,전명인,강창율,김병각,최응칠,Chung, Young-Ja,Jeon, Myoung-In,Kang, Chang-Youl,Kim, Byoung-Kak,Choi, Eung-Chil 대한약학회 1994 약학회지 Vol.38 No.6
Bifidobacterium bifidum, one strain of medical preparation being on the market for human intestinal disorders, was sensitive to rifampicin and fluoroquinolones. If this preparation is taken with rifampicin and fluoroquinolones, its therapeutic effect can't be expected. Serial passage of B. bifidum RFR61, which was obtained by MNNG mutation method, on agar with 2-fold minimal inhibitory concentration of ofloxacin produced B. bifidum OFR9 with minimal inhibitory contentrations of fluoroquinolones up to $4{\sim}256-fold$ higher than that for the original strain. B. bifidum OFR9 produced almost the same amount of organic acid as parental strain. This strain showed growth inhibitory activity against E. coli NM522, Shigella dysenteriae ATCC9752 and E. coli 078. No inactivations of rifampicin and ofloxacin by this resistant mutant strain were found.