J Periodontol:阿奇霉素对牙龈卟啉单胞菌粘附的抑制作用

2019-02-07 MedSci MedSci原创

牙龈卟啉单胞菌是一种主要的病原体,在牙周病患者中的检出率很高。牙龈和血凝素由牙龈卟啉单胞菌表达,并且它们在细菌粘附到牙周组织和生物膜形成中起重要作用。本研究旨在研究阿奇霉素的亚最小抑制浓度(亚MIC)对牙龈卟啉单胞菌粘附的影响,重点是抑制菌毛表达和血凝素活性。 将牙龈卟啉单胞菌ATCC 33277与阿奇霉素的亚MIC在37℃下通过温和振荡厌氧培养18小时。收获细菌细胞,用磷酸盐缓冲盐水(PBS)洗

牙龈卟啉单胞菌是一种主要的病原体,在牙周病患者中的检出率很高。牙龈和血凝素由牙龈卟啉单胞菌表达,并且它们在细菌粘附到牙周组织和生物膜形成中起重要作用。本研究旨在研究阿奇霉素的亚最小抑制浓度(亚MIC)对牙龈卟啉单胞菌粘附的影响,重点是抑制菌毛表达和血凝素活性。

将牙龈卟啉单胞菌ATCC 33277与阿奇霉素的亚MIC在37℃下通过温和振荡厌氧培养18小时。收获细菌细胞,用磷酸盐缓冲盐水(PBS)洗涤两次,并通过12%SDS-PAGE和蛋白质印迹分析蛋白质。使用相同的培养物进行粘附测定和血凝素活性测试。

SDS-PAGE结果表明,阿奇霉素的亚MIC可抑制41-kDa的菌毛蛋白表达和血凝素活性。通过蛋白质印迹和透射电子显微镜证实41-kDa菌毛蛋白表达和长菌毛在0.4μg/ mL,0.2μg/ mL和0.1μg/ mL阿奇霉素中的消失。与没有抗生素的粘附水平相比,阿奇霉素的亚MIC减少了牙龈卟啉单胞菌对人牙龈上皮细胞的粘附。

总之,这些结果表明,阿奇霉素的亚MIC可通过抑制菌毛和血凝素活性的产生来降低牙龈卟啉单胞菌对宿主细胞的粘附。因此,阿奇霉素可用作牙龈卟啉单胞菌引起的牙周病的生物膜治疗。

原始出处:

Kan P, Sasaki H, et al., Inhibitory effects of azithromycin on the adherence ability of Porphyromonas Gingivalis. J Periodontol. 2019 Jan 28. doi: 10.1002/JPER.18-0559. 

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    2019-04-07 feather89
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    2019-02-07 医者仁心5538

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