Inhibitory and dispersive effects of betaine on formation of Staphylococcus aureus biofilm
10.13602/j.cnki.jcls.2017.04.06
- VernacularTitle:甜菜碱对金黄色葡萄球菌生物膜形成抑制与分散的作用
- Author:
Fei JIN
;
Yi WEN
;
Yuqiao XU
;
Yaning MEI
;
Wenying XIA
;
Jue WANG
;
Fang NI
- Keywords:
Staphylococcus aureus;
biofilm;
betaine
- From:
Chinese Journal of Clinical Laboratory Science
2017;35(4):261-263
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the formation of Staphylococcus aureus biofilm and the inhibitory and dispersive effects of betaine on the biofilm.Methods The inhibitory and dispersive effects of 0.1％ betaine on the biofilm from 20 strains of Staphylococcus aureus were examined by crystal violet assay.Results All the 20 strains of Staphylococcus aureus formed biofilm.The biofilm of methicillinsensitive Staphylococcus aureus (MSSA) was formed in 24 hours with peak value of absorbance (A590 nm) (1.99 ± 0.53).The biofilm of methicillin-resistant Staphylococcus atureus(MRSA) was formed in 48 hours with peak value of absorbance(A590 nm) (1.13 ±0.47).After adding betaine,the absorbance(A590 nm) of MSSA biofilm fell down to(1.74 ± 0.61) in 24 hours,while the absorbance(A590 nm) of MRSA biofilm fell down to(0.40 ± 0.12) in 48 hours,which was significantly reduced compared with the controls (t =2.43,5.84,P ＜ 0.05 respectively).When adding betaine after the biofilm formed,the absorbancies (A590 nm) of both MSSA and MRSA showed no significant difference compared with the controls (P ＞ 0.05).Conclusion Betaine could inhibit biofilm formation of Staphylococcus aureus at concentration of 0.1％,but it could not disperse the mature biofilm of Staphylococcus aureus.
