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The cagE gene sequence as a diagnostic marker to identify JP2 and non-JP2 highly leukotoxic Aggregatibacter actinomycetemcomitans serotype b strains.
Umeå universitet, Medicinska fakulteten, Institutionen för odontologi.
Umeå universitet, Medicinska fakulteten, Institutionen för odontologi.
Umeå universitet, Medicinska fakulteten, Institutionen för odontologi.ORCID-id: 0000-0003-0765-6435
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2017 (Engelska)Ingår i: Journal of Periodontal Research, ISSN 0022-3484, E-ISSN 1600-0765, Vol. 52, nr 5, s. 903-912Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

BACKGROUND AND OBJECTIVE:Aggregatibacter actinomycetemcomitans is involved in oral and systemic infections, and is associated with, eg aggressive forms of periodontitis and with endocarditis. The cagE gene encodes a ≈39 kDa putative exotoxin expressed by A. actinomycetemcomitans. The level of conservation of cagE, and its possible significance in periodontal disease, has not yet been thoroughly investigated. In the present study, the role of the cagE gene as a diagnostic marker has been investigated.

MATERIAL AND METHODS:We have used conventional polymerase chain reaction (PCR), quantitative PCR and whole genome sequencing data to determine the prevalence of cagE in A. actinomycetemcomitans based on analysis of: (i) 249 isolates, collected and cultivated in a Ghanaian longitudinal cohort study; (ii) a serotype b collection of 19 strains; and (iii) the 36 A. actinomycetemcomitans genomes available in the NCBI database.

RESULTS:Whereas cagE was absent in the other serotypes, our data support that this gene sequence is linked to a virulent and highly leukotoxic group of serotype b strains, including both JP2 and non-JP2 genotypes of A. actinomycetemcomitans.

CONCLUSION:We propose that cagE has the potential to be used as a PCR-based gene marker for the identification of a virulent and highly leukotoxic group of serotype b strains, including both JP2 and non-JP2 genotypes. This finding might be of importance in the risk assessment of the development of periodontal attachment loss in young individuals and hence suggested to be a relevant discovery in future development of new diagnostic tools and/or treatment strategies.

Ort, förlag, år, upplaga, sidor
John Wiley & Sons, 2017. Vol. 52, nr 5, s. 903-912
Nyckelord [en]
Aggregatibacter actinomycetemcomitans, aggressive periodontitis, cagE, genotype, virulence, high leukotoxicity
Nationell ämneskategori
Mikrobiologi inom det medicinska området
Forskningsämne
mikrobiologi
Identifikatorer
URN: urn:nbn:se:umu:diva-133592DOI: 10.1111/jre.12462ISI: 000409224500011PubMedID: 28397250OAI: oai:DiVA.org:umu-133592DiVA, id: diva2:1088365
Tillgänglig från: 2017-04-12 Skapad: 2017-04-12 Senast uppdaterad: 2018-06-09Bibliografiskt granskad

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Johansson, AndersClaesson, RolfHöglund Åberg, CarolaOscarsson, Jan

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