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Identification and antibiotic susceptibility of coagulase negative Staphylococci isolated from patients with ocular infections

Pinna, Antonio <1963- > and Zanetti, Stefania Anna Lucia and Sechi, Leonardo Antonio and Pusceddu, Cinzia and Chili, R. and Carta, Francesco and Leone, Fiammetta (1998) Identification and antibiotic susceptibility of coagulase negative Staphylococci isolated from patients with ocular infections. L'Igiene moderna, Vol. 109 (4), p. 459-465. ISSN 0019-1655. Article.

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Abstract

The purpose of this study was to identify and determine antibiotic susceptibility of coagulase negative Staphylococci (CoNS) isolated from chronic blepharitis, conjunctivitis, and keratitis. DNA hybridization using a 1.8-kb fragment probe from Enterococcus hirae (Gen Bank accession number U22540) was performed to compare 19 strains of S. epidermidis. Forty-two S. epidermidis, 4 S. warneri, 3 S. capitis, 2 S. hominis, one each of S. xylosus, S. simulans, S. equorum, and S. lugdunensis were identified. Thirty- seven CoNS were resistant to penicillin, 12 to gentamicin, 28 to tetracycline, 18 to erythromycin, 4 to ciprofloxacin, 6 to vancomycin, and 1 to teicoplanin. On the whole, 18 strains were resistant to 3 or more antibiotics. All S. epidermidis isolates were positive for chromosomal DNA fingerprinting with the 1.8-kb fragment probe; 12 patterns were obtained. Species of CoNS apart from S. epidermidis may be isolated from corneal and external infection. Antibiotic susceptibility of CoNS is unpredictable; multidrug-resistant species are common. No clear relationship was found between the strains of S. epidermidis studied with identical chromosomal DNA and a specific ocular infection.

Item Type:Article
ID Code:2921
Status:Published
Refereed:Yes
Uncontrolled Keywords:Antibiotic susceptibility, coagulase negative Staphylococci, DNA hybridization, species identification
Subjects:Area 06 - Scienze mediche > MED/30 Malattie apparato visivo
Area 06 - Scienze mediche > MED/07 Microbiologia e microbiologia clinica
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze biomediche
001 Università di Sassari > 03 Istituti > Oftalmologia, Otorinolaringoiatria e Urologia
Publisher:E.J.E. Publisher
ISSN:0019-1655
Deposited On:04 Sep 2009 12:58

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