title: Bacterial profile of aggressive periodontitis in Morocco: a cross-sectional study.
abstract: BACKGROUND
  Aggressive periodontitis (AgP) is one of the most severe forms of periodontal diseases. In Morocco, Aggregatibacter actinomycetemcomitans has been strongly associated with AgP, however limited knowledge is available about the implication of other periodontal pathogens in this entity. Therefore, the main aim of this study was to evaluate the composition of the subgingival microbiota in Moroccan patients with AgP.
  
  
  METHODS
  Subgingival plaque samples were collected from 50 aggressive, 13 localized and 37 generalized periodontitis patients. Samples from 20 chronic periodontitis (ChP) patients were taken as controls. Samples collected from the four deepest periodontal pockets in each patient were pooled in pre-reduced transport fluid and examined by culture.
  
  
  RESULTS
  A. actinomycetemcomitans was significantly more frequent (p = 0.004) in generalised AgP compared to ChP, and Porphyromonas gingivalis was less prevalent in localized AgP, when compared with generalized AgP (p = 0.040) or ChP (p = 0.016). Prevotella intermedia, Fusobacterium nucleatum and Tannerella forsythia were also frequently detected in all groups. Mean proportions of A. actinomycetemcomitans were significantly higher in AgP groups, when compared to ChP, and generalized AgP patients harbored significantly higher proportions of P. gingivalis and T. forsythia, when compared to localized AgP or ChP.
  
  
  CONCLUSIONS
  A. actinomycetemcomitans, P. gingivalis, T. forsythia, P. intermedia and F. nucleatum were frequently detected in this Moroccan population with AgP. Differences in frequency of detection, counts and proportions of A. actinomycetemcomitans, P. gingivalis and T. forsythia suggests the presence of distinct microbiological profiles for localized AgP, generalized AgP and ChP patients.
authors.affiliation: EREB (Research Group of Oral Ecosystem), Faculty of Medicine Dentistry, Mohammed V University, Rabat, Morocco. hanane2bio2000@yahoo.fr.
authors.forename: Hanane
authors.initials: H
authors.lastname: Chahboun
authors.affiliation: ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, Faculty of Dentistry, University Complutense, Madrid, Spain. merryminguez@hotmail.com.
authors.forename: Maria Minguez
authors.initials: MM
authors.lastname: Arnau
authors.affiliation: ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, Faculty of Dentistry, University Complutense, Madrid, Spain. davidher@odon.ucm.es.
authors.forename: David
authors.initials: D
authors.lastname: Herrera
authors.affiliation: ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, Faculty of Dentistry, University Complutense, Madrid, Spain. marsan@ucm.es.
authors.forename: Mariano
authors.initials: M
authors.lastname: Sanz
authors.affiliation: EREB (Research Group of Oral Ecosystem), Faculty of Medicine Dentistry, Mohammed V University, Rabat, Morocco. o.ennibi@um5s.net.ma.
authors.forename: Oum Keltoum
authors.initials: OK
authors.lastname: Ennibi
mesh_terms: D000293:Adolescent; D000328:Adult; D016976:Aggregatibacter actinomycetemcomitans / Q000302:isolation & purification; D010520:Aggressive Periodontitis / Q000382:microbiology*; D058491:Bacterial Load; D044883:Campylobacter rectus / Q000302:isolation & purification; D002206:Capnocytophaga / Q000302:isolation & purification; D055113:Chronic Periodontitis / Q000382:microbiology; D003430:Cross-Sectional Studies; D003773:Dental Plaque / Q000382:microbiology; D016124:Eikenella corrodens / Q000302:isolation & purification; D005051:Eubacterium / Q000302:isolation & purification; D005260:Female; D016967:Fusobacterium nucleatum / Q000302:isolation & purification; D006090:Gram-Negative Bacteria / Q000302:isolation & purification*; D006801:Humans; D008297:Male; D010462:Peptostreptococcus / Q000302:isolation & purification; D010514:Periodontal Pocket / Q000382:microbiology; D010518:Periodontitis / Q000382:microbiology; D016966:Porphyromonas gingivalis / Q000302:isolation & purification; D018713:Prevotella intermedia / Q000302:isolation & purification; D045242:Prevotella nigrescens / Q000302:isolation & purification; D000070436:Tannerella forsythia / Q000302:isolation & purification; D055815:Young Adult