南方医科大学学报2017，Vol.37Issue(11)：1448-1455,8.DOI:10.3969/j.issn.1673-4254.2017.11.04
基于16s rRNA高通量测序分析糖尿病足骨髓炎感染骨组织中的病原微生物
Pathogen analysis in patients with diabetic foot osteomyelitis using 16S rRNA high-throughput sequencing
摘要
Abstract
Objective To analyze the characteristics of pathogenic microorganisms in the infected bone tissues in patients with diabetic foot osteomyelitis (DFO) using 16S rRNA high-throughput sequencing to facilitate rapid and accurate detection of pathogens and effective infection control. Methods Between September, 2016 and April, 2017, 16 patients with DFO were admitted in our department and infected bone specimens were obtained during debridement. The pathogenic microorganisms in the specimens were identified using both 16S rRNA high-throughput sequencing and automatic blood culture analyzer, and the characteristics of the microflora were analyzed based on 16S rRNA sequencing data in comparison with the results of blood culture. Results The results of 16S rRNA sequencing showed that bone tissues of DFO contained diverse and uniformly distributed pathogenic organisms, among which 20 (87%) dominant genera were identified with Prevotella as the most abundant pathogen. Both 16S rRNA sequencing and routine culture results suggested the domination of gram-negative bacteria among the pathogens in DFO bone tissues. 16S rRNA sequencing, compared with routine culture, yielded a higher positivity rate (100%vs 88.24%) and detected a greater average number of pathogens (12.56 vs 1.50) and a higher proportion of gram-negative bacteria (67.16%vs 50.00%) in the samples. 16S rRNA sequencing detected nearly all the pathogens identified by routine culture except for Escherichia coli, Serratia marcescens and Enterobacter cloaca, and identified 13 genera that failed to be detected by routine culture, including the obligate or strict anaerobes Anaerococcus, Veillonella, Bacteroides, Fusobacterium, Porphyromonas, Finegoldia, Prevotella, Peptostreptococcus, Parvimonas, Peptoniphilus and Bulleidia. Routine culture did not detect any anaerobes in the samples but identified multidrug-resistant strains in as many as 58.33% of the pathogens. Conclusions 16S rRNA high-throughput sequencing is capable of demonstrating the diversity and abundance of microflora in DFO bone tissues, where diverse and uniformly distributed pathogens can be detected with a discrete distribution of the dominant genera, most of which are gram-negative. Compared with routine culture method, 16S rRNA sequencing allows more convenient and accurate identification of the pathogens (especially gram- negative bacteria and anaerobes), and can be useful in clinical decision on appropriate treatment of DFO.关键词
糖尿病足骨髓炎/16srRNA基因/高通量测序技术/培养/病原菌Key words
diabetic foot osteomyelitis/16S rRNA gene/high-throughput sequencing/culture/pathogens引用本文复制引用
胡萍,邹梦晨,曹瑛,潘彦伶,罗祥蓉,蒋娅,薛耀明,高方..基于16s rRNA高通量测序分析糖尿病足骨髓炎感染骨组织中的病原微生物[J].南方医科大学学报,2017,37(11):1448-1455,8.基金项目
国家自然科学基金(81600648) （81600648）
广东省科技计划项目(2016ZC0066) （2016ZC0066）
广东省医学科学技术研究基金项目(A2017090) Supported by National Natural Science Foundation of China (81600648). （A2017090）
