TY - JOUR
T1 - Identification of bacterial pathogens in patients with endophthalmitis by 16S ribosomal DNA typing
AU - Knox, C. Michele
AU - Cevallos, Vicky
AU - Margolis, Todd P.
AU - Dean, Deborah
N1 - Funding Information:
This work was supported in part by a grant from Fight for Sight, Prevent Blindness America, Schaumburg, Illinois.
PY - 1999/10
Y1 - 1999/10
N2 - PURPOSE: To determine whether sequence analysis of 16S ribosomal DNA (rDNA) can be used to detect bacterial pathogens in patients with postoperative endophthalmitis.METHODS: In 10 eyes of 10 patients, vitreous specimens were collected for culture and rDNA typing. Variable segments of each ribosomal DNA specimen were amplified by polymerase chain reaction (PCR), sequenced, and aligned by BLAST, a computer alignment program, against sequences in GenBank at the National Institutes of Health.RESULTS: Specimens were available from five eyes with bacterial endophthalmitis diagnosed by Gram stain or culture. Amplified 16s rDNA sequences from the eyes of three patients were identical to microbiologic results. Polymerase chain reaction results were negative in two cases in which unusual organisms were detected. All five control specimens from patients with nonbacterial endophthalmitis or uveitis were PCR negative. Approximately 48 to 72 hours are required under ideal conditions for final species identification with this ribosomal typing technique.CONCLUSIONS: 16S rDNA typing shows potential as a relatively rapid technique for identifying bacteria in vitreous samples. Copyright (C) 1999 Elsevier Science Inc.
AB - PURPOSE: To determine whether sequence analysis of 16S ribosomal DNA (rDNA) can be used to detect bacterial pathogens in patients with postoperative endophthalmitis.METHODS: In 10 eyes of 10 patients, vitreous specimens were collected for culture and rDNA typing. Variable segments of each ribosomal DNA specimen were amplified by polymerase chain reaction (PCR), sequenced, and aligned by BLAST, a computer alignment program, against sequences in GenBank at the National Institutes of Health.RESULTS: Specimens were available from five eyes with bacterial endophthalmitis diagnosed by Gram stain or culture. Amplified 16s rDNA sequences from the eyes of three patients were identical to microbiologic results. Polymerase chain reaction results were negative in two cases in which unusual organisms were detected. All five control specimens from patients with nonbacterial endophthalmitis or uveitis were PCR negative. Approximately 48 to 72 hours are required under ideal conditions for final species identification with this ribosomal typing technique.CONCLUSIONS: 16S rDNA typing shows potential as a relatively rapid technique for identifying bacteria in vitreous samples. Copyright (C) 1999 Elsevier Science Inc.
UR - http://www.scopus.com/inward/record.url?scp=0032852188&partnerID=8YFLogxK
U2 - 10.1016/S0002-9394(99)00181-6
DO - 10.1016/S0002-9394(99)00181-6
M3 - Article
C2 - 10577597
AN - SCOPUS:0032852188
SN - 0002-9394
VL - 128
SP - 511
EP - 512
JO - American journal of ophthalmology
JF - American journal of ophthalmology
IS - 4
ER -