[Distribution of anaerobes in periodontal abscess and its resistance to antibiotics].

Abstract

OBJECTIVE:

To isolate and culture the predominant anaerobes from the periodontal abscesses, and to test the antibiotic susceptibility and drug resistant genes of the strains.

METHODS:

The isolated strains were identified by both API20A biochemical method and polymerase chain reaction (PCR) method. The antibiotic susceptibility test was performed by agar dilution method. The resistant genes of the drug-resistant strains obtained were screened by PCR.

RESULTS:

The anaerobes were detected in 48% (28/58) of the samples and Prevotella melaninogenica (Pm) was mostly identified in 43% (12/28). API20A biochemical method had 82% (23/28) agreement with the 16SrRNA method in identification rate. Anaerobes were resistant to metronidazole, clindamycin and cefmetazole. The erythromycin-resistant methylase genes F (ermF) gene was detected in three of eight clindamycin resistant strains. None of them was found coded on bacterial plasmids. However, no metronidazole resistant gene was detected on drug resistant strains.

CONCLUSIONS:

Pm was the predominant species dectected in the periodontal abscess of the patients. The antibiotic agents should be used based on the genotypes and general condition of the patients.

• Authors: Jun-lin He, Li-ying Yu, Jia-zhen Chen
• Journal: Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology (Zhonghua Kou Qiang Yi Xue Za Zhi) Vol. 47 Issue 12 Pg. 719-24 (Dec 2012) ISSN: 1002-0098 [Print] China
• PMID: 23328096 (Publication Type: English Abstract, Journal Article)

Chemical References

• Anti-Bacterial Agents
• Metronidazole
• Cefmetazole
• Clindamycin
• Erythromycin

Topics

• Adult
• Anti-Bacterial Agents (pharmacology)
• Bacteria, Anaerobic (isolation & purification)
• Cefmetazole (pharmacology)
• Clindamycin (pharmacology)
• Drug Resistance, Bacterial (genetics)
• Erythromycin (pharmacology)
• Female
• Genes, Bacterial
• Humans
• Male
• Metronidazole (pharmacology)
• Microbial Sensitivity Tests
• Middle Aged
• Periodontal Abscess (microbiology)
• Prevotella (isolation & purification)