Abstract
Photoallergenicity of prulifloxacin, a new antibacterial agent, was examined using guinea pigs compared with those of the other quinolone antibacterial drugs, ofloxacin (OFLX), lomefloxacin (LFLX), ciprofloxacin (CPFX), enoxacin (ENX) and nalidixic acid (NA). Prulifloxacin and other drugs were orally administered at minimal phototoxic doses 1 hr before UVA (18 J/cm2) irradiation. This photosensitization procedure was daily repeated for 5 days. On 16 days after the final sensitization, the animals were challenged with UVA (18 J/cm2) after the administration of correspondent substances at maximal non-phototoxic doses. Photoallergic reactions were induced by OFLX (40 mg/kg), LFLX (3 mg/kg), CPFX (170 mg/kg) and ENX (80 mg/kg), but were not observed in prulifloxacin (170 mg/kg) and NA (30 mg/kg). These results show that photoallergenicity of prulifloxacin were less severe than those of the other quinolone antibacterial drugs under the conditions of this study.
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