Int J Microbiol:聚胍可抑制两种常见的口腔细菌

2017-07-16 MedSci MedSci原创

本研究评估了聚胍(CatDex)对两种口腔细菌的抗菌性能。将葡萄糖酸氯己定1340 μmol L−1(CHX 0.12%)作为对照组。使用BHI培养基培养变形链球菌和牙龈卟啉单胞菌。使用最低抑菌浓度(MIC)和Kirby Bauer法测定细菌敏感性和抑菌活性。为研究试剂的副作用,也就是毒性,使用牙髓干细胞(DPSCs)进行检测。使用荧光的细胞毒性和共聚焦显微镜来检测细胞活力。结果显示,无论何种浓度

本研究评估了聚胍(CatDex)对两种口腔细菌的抗菌性能。

将葡萄糖酸氯己定1340 μmol L−1(CHX 0.12%)作为对照组。使用BHI培养基培养变形链球菌和牙龈卟啉单胞菌。使用最低抑菌浓度(MIC)和Kirby Bauer法测定细菌敏感性和抑菌活性。为研究试剂的副作用,也就是毒性,使用牙髓干细胞(DPSCs)进行检测。使用荧光的细胞毒性和共聚焦显微镜来检测细胞活力。

结果显示,无论何种浓度,CatDex均可抑制变形链球菌的生长,而牙龈卟啉单胞菌则除了25 mol L−1之外,其余浓度均可抑制。对于变形链球菌和牙龈卟啉单胞菌来说,CatDex的MIC的浓度均为50 mol L−1。将细菌置于50 mol L−1中8 h,CatDex表现出随着时间的增加抗菌活性逐渐增加,两种细菌抑制水平达到91%。对两种常见细菌进行测试时,CatDex和CHX的抗菌活性相似。细胞毒性方面,CatDex对DPSCs的毒性明显较低。CatDex的细胞毒性取决于时间而非浓度。至于临床相关性,CatDex可能作为一种新型的抗菌剂加以应用。进一步的研究正在进行中。

原始出处:

E. Escamilla-García, A. G. Alcázar-Pizaña, et al., Antimicrobial Activity of a Cationic Guanidine Compound against Two Pathogenic Oral Bacteria. Int J Microbiol. 2017; 2017: 5924717. Published online 2017 May 4. doi: 10.1155/2017/5924717.

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    2018-05-25 sunylz
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    2018-01-15 xjy02
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