Isolation of anaerobic bacteria from atherosclerotic plaques from carotid arteries

被引:0
作者
Kedzia, Anna [1 ]
Ciecierski, Marek [2 ]
Kufel, Andrzej [2 ]
Wierzbowska, Maria [1 ]
Kwapisz, Ewa [1 ]
机构
[1] Med Univ Gdansk, Dept Oral Microbiol, Gdansk, Poland
[2] Mikolaj Kopernik Reg Traumatol Ctr, Dept Vasc Surg, Gdansk, Poland
来源
ACTA ANGIOLOGICA | 2012年 / 18卷 / 02期
关键词
atherosclerotic plaque; carotid artery; anaerobic bacteria; infection;
D O I
暂无
中图分类号
R6 [外科学];
学科分类号
1002 ; 100210 ;
摘要
Background. Recent studies demonstrated a link between oral infections and the presence of atherosclerotic lesions in carotid arteries. Periodontal pathogens, including Porphyromonas gingivalis, Prevotella intermedia, Tannerella forsythia, Fusobacterium nucleatum, and Prevotella nigrescens have been identified in atherosclerotic plaques. The microorganisms have been detected using PCR technique, DNA hybridization, FISH analysis (fluorescence in situ hybridization), ELISA, by immunohistochemistry, and in transmission or scanning electron microscopy. It is, however, only the FISH technique and culture in media that permit detection of living microorganisms. Materials and methods. Atherosclerotic plaques were obtained intraoperatively from 37 patients (22 men and 15 women). The harvested plaques were placed in a transport medium prepared according to the PRAS method. The material was then homogenized and cultured on various enriched or selective media. Incubation was carried out for 10-14 days at 37 degrees C, in anaerobic jars with 10% C0(2), 10% H-2, and 80% N-2 atmosphere, with palladium catalyst and indicator of anaerobiosis. Anaerobic bacteria were identified according to current regulations. Results. Anaerobic bacteria were isolated from 68% of the analysed atherosclerotic plaques. Porphyromonas gingivalis were the dominant species (20% of cases). Gram-positive rods Propionibacterium acnes were identified in 18% of the samples, and Gram-negative rods Prevotella intermedia in 16% of plaques from carotid arteries. Other anaerobic species, including Prevotella, Fusobacterium, Micromonas, Finegoldia, Propionibacterium, and Actinomyces genus occurred in rare cases (2-8%). Conclusions. Anaerobic bacteria were isolated from 68% of the atherosclerotic plaque samples obtained from carotid arteries. The most prevalent Gram-negative rods included Porphyromonas gingivalis and Prevotella intermedia species, and Gram-positive rods were most often represented by Propionibacterium acnes. Porphyromonas endodontalis and Fusobacterium nucleatum species were isolated the least often.
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页码:59 / 67
页数:9
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