作者:Tomoko Hanawa、Takako Osaki、Taki Manzoku、Minoru Fukuda、Hayato Kawakami、Akio Tomoda、Shigeru Kamiya
DOI:10.1248/bpb.33.188
日期:——
Phx-3, one of the phenoxazine derivatives, is reported to have inhibitory effect on Mycobacterium species and Chlamydia pneumoniae but not Escherichia coli, Salmonella Typhimurium, Pseudomonas aeruginosa, Staphylococcus aureus, Listeria monocytogenes. The bactericidal activities of Phx-3 against Helicobacter pylori strains have not been assessed. Then, we measured minimum inhibitory concentration of Phx-3 for Helicobacter strains and assessed the morphological and biochemical effects of Phx-3 on H. pylori. In present study, it has shown that H. pylori strains including clarithromycin resistant strain and Helicobacter musterae were killed effectively by the treatment with Phx-3. Furthermore, severe morphological changes such as membrane blebbing and formation of hollows in H. pylori were detected. In addition, induction of heat shock protein 60 was observed. Taken together, Phx-3 has antibacterial activity against Helicobacter pylori.
据报道,Phx-3 是吩噁嗪衍生物之一,对分枝杆菌和肺炎衣原体有抑制作用,但对大肠杆菌、鼠伤寒沙门氏菌、绿脓杆菌、金黄色葡萄球菌和单核细胞增生李斯特菌没有抑制作用。尚未评估 Phx-3 对幽门螺旋杆菌菌株的杀菌活性。因此,我们测定了 Phx-3 对幽门螺杆菌菌株的最小抑菌浓度,并评估了 Phx-3 对幽门螺杆菌的形态和生化影响。本研究表明,Phx-3 能有效杀灭幽门螺杆菌菌株,包括克拉霉素耐药菌株和芥子气螺旋杆菌。此外,还检测到幽门螺杆菌发生了严重的形态变化,如膜出血和形成空洞。此外,还观察到热休克蛋白 60 的诱导作用。综上所述,Phx-3 对幽门螺旋杆菌具有抗菌活性。