生物膜
粪肠球菌
微生物学
根管
毒力
生物
明胶酶
肠球菌
牙周炎
基因
细菌
抗生素
大肠杆菌
遗传学
医学
牙科
基质金属蛋白酶
作者
Masoud Akbari Aghdam,Mohammad Hossein Soroush Barhaghi,Mohammad Aghazadeh,Farnaz Jafari,M. Beomide Hagh,Mehdi Haghdoost,Mohammad Yousef Memar,Mohammad Ahangarzadeh Rezaee,Hossein Samadi Kafil
出处
期刊:Cellular and Molecular Biology
日期:2017-05-20
卷期号:63 (5): 55-59
被引量:20
标识
DOI:10.14715/cmb/2017.63.5.11
摘要
Enterococcus faecalis is occurring in opportunistic infections involving the oral cavity. This study aimed to evaluate the presence of E. faecalis virulence genes in dental root canal isolates recovered from advanced chronic periodontitis patients. One hundred E. faecalis isolated from dental root canal during July 2015 to Oct 2016. After analysis of biofilm formation by the semi-quantitative determination in 96-well flat bottom polystyrene plates, the presence of asa, esp, efaA, ace, ebpR, gel and hyl gene were studied by PCR. Gelatinase and hemolytic activity were detected by phenotypic methods. Ninety-one percent of isolates had ebpR gene, 85% ace, 82% efaA, 81% gel, 56% esp, 33% asa1, 2% hyl and 0% cyl gene. Evaluation of biofilm formation by microtiter plate method presented 49% of the isolates as strong biofilm producer, 42% displayed moderate biofilm formation, and 10 % weak or no biofilm was observed. asa1, efaA, esp, and ebpR positive isolates had significantly higher biofilm formation than negative isolates, while no significant differences were found when comparing ace-positive and - negative isolates. Present study showed that the ace genes do not seem to be necessary nor sufficient for the production of biofilm in Enterococcus faecalis but the presence of asa1, efaA, esp, and ebpR correlates with increased biofilm formation of dental root canal isolates.
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