title: Detection of fusobacterium nucleatum and fadA adhesin gene in patients with orthodontic gingivitis and non-orthodontic periodontal inflammation.
abstract: Fusobacterium nucleatum is one of the most abundant gram-negative bacilli colonizing the subgingival plaque and closely associated with periodontal disease. However it is unclear whether F. nucleatum is involved in gingival inflammation under orthodontic appliance. A novel adhesin, FadA, which is unique to oral Fusobacteria, is required for F. nucleatum binding and invasion to epithelial cells and thus may play an important role in colonization of Fusobacterium in the host. In this study, we evaluated the prevalence of F. nucleatum and its virulence factor FadA adhesion gene (fadA) in 169 subgingival biofilm samples from 55 cases of gingivitis patients with orthodontic appliances, 49 cases of gingivitis patients without orthodontic treatment, 35 cases of periodontitis patients and 30 cases of periodontally healthy people via PCR. The correlations between the F. nucleatum/fadA and gingivitis index(GI)was also analyzed. The detection rate of F. nucleatum/fadA in periodontitis group and non-orthodontic gingivitis group was higher than the other two groups (p<0.01) while it was higher in orthodontic gingivitis group than in health people (p<0.05). An obviously positive correlation was observed between the prevalence of F. nucleatum/fadA and GI. F. nucleatum carrying fadA may be more closely related to the development of gingivitis and periodontal disease compared with orthodontic gingivitis.
authors.affiliation: Department of Orthodontics, Jinan Stomatological Hospital, Jinan, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Liu
authors.affiliation: Pediatric Research Institute, Qilu Children's Hospital of Shandong University, Ji'nan, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Periodontics, Jinan Stomatological Hospital, Jinan, China.
authors.forename: Jianning
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Orthodontics, Jinan Stomatological Hospital, Jinan, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Guo
authors.affiliation: Department of Orthodontics, Jinan Stomatological Hospital, Jinan, China.
authors.forename: Yujie
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Orthodontics, Jinan Stomatological Hospital, Jinan, China.
authors.forename: Shuiqing
authors.initials: S
authors.lastname: Xiao
mesh_terms: D018829:Adhesins, Bacterial / Q000235:genetics* / Q000378:metabolism; D000293:Adolescent; D000328:Adult; D001422:Bacterial Adhesion; D001483:Base Sequence; D018441:Biofilms / Q000254:growth & development*; D016022:Case-Control Studies; D002648:Child; D005260:Female; D016967:Fusobacterium nucleatum / Q000235:genetics* / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism; D015870:Gene Expression; D005891:Gingivitis / Q000175:diagnosis / Q000382:microbiology; D006801:Humans; D007249:Inflammation / Q000175:diagnosis / Q000382:microbiology; D008297:Male; D008969:Molecular Sequence Data; D010518:Periodontitis / Q000175:diagnosis / Q000382:microbiology
chemical_list: D018829:Adhesins, Bacterial