구강세균 Prevotella intermedia의 성장에 따른 polyphosphate의 영향에 관한 연구
EFFECT OF POLYPHOSPHATE ON THE GROWTH OF ORAL BACTERIUM, PREVOTELLA INTERMEDIA
공희정, 최호영, 민병순, 박상진, 이진용, 최기운,
소속 상세정보
공희정 ( ) - 경희대학교 치과대학 보존학교실
최호영 ( ) - 경희대학교 치과대학 보존학교실
민병순 ( ) - 경희대학교 치과대학 보존학교실
박상진 ( ) - 경희대학교 치과대학 보존학교실
이진용 ( ) - 경희대학교 치과대학 보존학교실
최기운 ( ) - 경희대학교 치과대학 보존학교실
KMID : 0362319980230020550
Abstract
Prevotella intermedia has been known as one of the important bacterial species involved in the endodontic infections and various periodontal diseases. Polyphosphate has been widely used to prevent decomposition of food and known to have an inhibitory effect on the growth of gram positive bacteria. The purpose of this study was to evaluate the effect of polyphosphate on the growth of Prevotella intermedia, a gram negative bacterium.
Prevotella intermedia G8GK3(ATCC 49046) was grown in the presence of polyphosphates with different chain lengths. Inhibitory effect of each polyphosphate, which was added at the beginning or at the early exponential growth phase of Prevotella intermedia, was determined by measuring optical density of the bacterial cells at 540nm, viable cells and lysis of Prevotella intermedia.
The results from this study were as follows :
1. Polyphosphate inhibited the growth of Prevotella intermedia.
2. The minimum inhibitory concentration(MIC) of polyphosphate appeared to be 0.051yo.
3. Polyphosphates with chain lengths of 5 and 65 demonstrated the greatest inhibitory effect on the growth of Prevotella intermedia.
4. Polyphosphate was bactericidal to Prevotella intermedia, demonstrating the growth inhibition of the bacterium.
5. Polyphosphate induced lysis of Prevotella intermedia.
The overall results suggest that polyphosphate has a bactericidal effect on Prevotella intermedia, causing the lysis of the bacterium.
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