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Titolo:
Distribution of the tetracycline resistance determinant tetQ gene in oral isolates of black-pigmented anaerobes in Japan
Autore:
Okamoto, M; Takano, K; Maeda, N;
Indirizzi:
Tsurumi Univ, Sch Dent Med, Dept Oral Bacteriol, Tsurumi Ku, Yokohama, Kanagawa 2308501, Japan Tsurumi Univ Yokohama Kanagawa Japan 2308501 ama, Kanagawa 2308501, Japan Tsurumi Univ, Sch Dent Med, Dept Anesthesiol, Yokohama, Kanagawa 2308501, Japan Tsurumi Univ Yokohama Kanagawa Japan 2308501 ama, Kanagawa 2308501, Japan
Titolo Testata:
ORAL MICROBIOLOGY AND IMMUNOLOGY
fascicolo: 4, volume: 16, anno: 2001,
pagine: 224 - 228
SICI:
0902-0055(200108)16:4<224:DOTTRD>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
PREVOTELLA-INTERMEDIA; PORPHYROMONAS-GINGIVALIS; SUBGINGIVAL PLAQUE; TET(Q) GENE; ACTINOBACILLUS-ACTINOMYCETEMCOMITANS; ANTIBIOTIC-RESISTANCE; ENDODONTIC INFECTIONS; BACTEROIDES-FRAGILIS; PERIODONTAL-DISEASE; NIGRESCENS;
Keywords:
Prevotella intermedia; Prevotella nigrescens; tetracycline resistance; tetQ;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Okamoto, M Tsurumi Univ, Sch Dent Med, Dept Oral Bacteriol, Tsurumi Ku, 2-1-3 Tsurumi, Yokohama, Kanagawa 2308501, Japan Tsurumi Univ 2-1-3 Tsurumi Yokohama Kanagawa Japan 2308501 apan
Citazione:
M. Okamoto et al., "Distribution of the tetracycline resistance determinant tetQ gene in oral isolates of black-pigmented anaerobes in Japan", ORAL MICROB, 16(4), 2001, pp. 224-228

Abstract

We investigated the distribution of tetracycline resistance determinant tetQ in oral black-pigmented anaerobes using a polymerase chain reaction (PCR) method. A total of 185 healthy subjects were divided into 3 groups based on subject age: young (6 to 10 years, n=58), middle(11 to 40 years, n=96), and elder (exactly 70 years, n=31). The prevalence of black-pigmented anaerobes in the gingival sulcus among these groups was 29.3%, 28.2%, and 64.5%,respectively. The prevalence of Prevotella nigrescens among these groups was 22.4%, 15.6%, and 32.3%, respectively, whereas the prevalence of Prevotella intermedia was 1.7%, 4.2%, and 35.5%, respectively. Porphyromonas gingivalis was found only in the elder group (16.1%). The prevalence of the tetQgene in the black-pigmented anaerobes-positive subjects was almost the same among the 3 groups (approximately 30%). The tetQ gene was found in 27.5% (46 of 167) of P. nigrescens isolates, whereas it was found in only 6.4% (3of 47) of P. intermedia isolates and in none of the 19 P. gingivalis isolates. Restriction endonuclease digestion patterns of the PCR products revealed 83.6% of 49 tetQ-positive isolates were of subtype A2H2 (AluI type 2, HpaII type 2).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 00:15:22