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JoVE Encyclopedia of Experiments
Microbiology
开发慢性铜绿假单胞菌皮肤伤口感染的小鼠模型
开发慢性铜绿假单胞菌皮肤伤口感染的小鼠模型
Encyclopedia of Experiments
Microbiology
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Encyclopedia of Experiments Microbiology
Developing a Mouse Model of Chronic Pseudomonas aeruginosa Skin Wound Infection

开发慢性铜绿假单胞菌皮肤伤口感染的小鼠模型

Protocol
118 Views
02:24 min
December 11, 2025
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Please note that some of the translations on this page are AI generated. Click here for the English version.

Transcript

先用麻醉小鼠,背部有两处全层切除皮肤伤口,同时外科切除表皮层和真皮层。

一层透明的敷料覆盖伤口,以隔离伤口并防止外部污染。

让老鼠恢复一段时间。

在此期间,含有不同成分的血液进入伤口。这激活血小板,触发由纤维蛋白、纤青素和蛋白聚糖组成的临时基质组装,并启动血栓形成。

重新麻醉小鼠,并在每侧注射生理盐水以保持水分。

接着,将一定剂量的发光铜 绿假单胞 菌株通过薄膜注入每个伤口。

细菌会在临时基质中定居,支持它们的附着和生长。

基质和膜片敷料共同为生物膜形成提供了有利环境,导致局部慢性感染。

记录发光情况以监测细菌感染情况。

手术后24小时,再次称重重新麻醉小鼠,并在两侧皮下注射250微升预热无菌0.9%氯化钠。

接着,将100微升发光 金黄色单胞 菌悬浮液装入配备27号针头的500微升结核菌安全盖注射器,并通过透明敷料向每个伤口注入40微升细菌悬浮液。

确保细菌悬浮液充分混合,透明敷料完好无损。确保你只用针头刺穿透明敷料一次,斜面朝上。

然后将老鼠放回笼子,放在带监控的加热垫上,并在笼子地板上夹着高热量营养补剂糊。

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