PMID- 15297496 OWN - NLM STAT- MEDLINE DCOM- 20040930 LR - 20181113 IS - 0095-1137 (Print) IS - 1098-660X (Electronic) IS - 0095-1137 (Linking) VI - 42 IP - 8 DP - 2004 Aug TI - Use of 16S ribosomal DNA PCR and denaturing gradient gel electrophoresis for analysis of the microfloras of healing and nonhealing chronic venous leg ulcers. PG - 3549-57 AB - The bacterial microfloras of 8 healing and 10 nonhealing chronic venous leg ulcers were compared by using a combination of cultural analysis and denaturing gradient gel electrophoresis (DGGE) of PCR-amplified 16S rRNA gene products. Cultural analysis of the microflora revealed that the majority of both wound types carried the aerobes Staphylococcus and Pseudomonas spp. (89 and 80%, respectively). Sequencing of 16S ribosomal DNAs selected on the basis of DGGE profiling allowed the identification of strains not detected by cultural means. Of considerable interest was the finding that more than 40% of the sequences represented organisms not cultured from the wound from which they were amplified. DGGE profiles also revealed that all of the wounds possessed one apparently common band, identified by sequencing as Pseudomonas sp. The intensity of this PCR signal suggested that the bacterial load of nonhealing wounds was much higher for pseudomonads compared to healing wounds and that it may have been significantly underestimated by cultural analysis. Hence, the present study shows that DGGE could give valuable additional information about chronic wound microflora that is not apparent from cultural analysis alone. FAU - Davies, Charlotte E AU - Davies CE AD - Wound Biology Group, Department of Oral Surgery, Medicine, and Pathology, University of Wales College of Medicine, Heath Park, Cardiff CF14 4XY, United Kingdom. FAU - Hill, Katja E AU - Hill KE FAU - Wilson, Melanie J AU - Wilson MJ FAU - Stephens, Phil AU - Stephens P FAU - Hill, C Michael AU - Hill CM FAU - Harding, Keith G AU - Harding KG FAU - Thomas, David W AU - Thomas DW LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Clin Microbiol JT - Journal of clinical microbiology JID - 7505564 RN - 0 (DNA, Ribosomal) RN - 0 (RNA, Ribosomal, 16S) SB - IM MH - Base Sequence MH - Biopsy MH - Chronic Disease MH - DNA, Ribosomal/*genetics MH - Electrophoresis, Polyacrylamide Gel MH - Humans MH - Leg Ulcer/*microbiology/pathology MH - Polymerase Chain Reaction/*methods MH - Pseudomonas/isolation & purification MH - RNA, Ribosomal, 16S/*genetics MH - Staphylococcus/isolation & purification MH - *Wound Healing PMC - PMC497624 EDAT- 2004/08/07 05:00 MHDA- 2004/10/02 05:00 PMCR- 2004/08/01 CRDT- 2004/08/07 05:00 PHST- 2004/08/07 05:00 [pubmed] PHST- 2004/10/02 05:00 [medline] PHST- 2004/08/07 05:00 [entrez] PHST- 2004/08/01 00:00 [pmc-release] AID - 42/8/3549 [pii] AID - 1074-03 [pii] AID - 10.1128/JCM.42.8.3549-3557.2004 [doi] PST - ppublish SO - J Clin Microbiol. 2004 Aug;42(8):3549-57. doi: 10.1128/JCM.42.8.3549-3557.2004.