PMID- 18155882 OWN - NLM STAT- MEDLINE DCOM- 20080506 LR - 20191210 IS - 0924-8579 (Print) IS - 0924-8579 (Linking) VI - 31 IP - 3 DP - 2008 Mar TI - A novel structure of Tn4001-truncated element, type V, in clinical enterococcal isolates and multiplex PCR for detecting aminoglycoside resistance genes. PG - 250-4 AB - A multiplex polymerase chain reaction (PCR) was established for detecting aacA-aphD, aph(2'')-Ib, aph(2'')-Ic and aph(2'')-Id, encoding high-level gentamicin resistance (HLGR), and aadA and aadE, encoding high-level streptomycin resistance (HLSR), in enterococci. The assay was implemented for 419 enterococcal blood and urine isolates recovered from patients at a university hospital in Thailand. Among the isolates tested, 56.1% (235 isolates) and 58.9% (247 isolates) contained aacA-aphD and aadE, respectively. The aph(2'')-Ib, aph(2'')-Ic, aph(2'')-Id and aadA genes were not found in any isolate. Among the isolates carrying the aacA-aphD gene, 99.1% exhibited a HLGR phenotype. All 235 enterococcal isolates containing aacA-aphD were further studied by PCR to characterise the structure of the resistance determinants carrying the aacA-aphD gene. The result revealed that only 22.6% carried Tn4001-related element, whereas the remaining isolates contained Tn4001-truncated element. No Tn4001-IS257 hybrid structure was detected. The majority of isolates carrying Tn4001-related element were Enterococcus faecalis (77.4%). Among Tn4001-truncated elements detected, all previously reported types (types I-IV) were found. Furthermore, a novel Tn4001-truncated type, designated type V, was also identified. FAU - Leelaporn, A AU - Leelaporn A AD - Department of Microbiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkoknoi, Bangkok 10700, Thailand. siale@mucc.mahidol.ac.th FAU - Yodkamol, K AU - Yodkamol K FAU - Waywa, D AU - Waywa D FAU - Pattanachaiwit, S AU - Pattanachaiwit S LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20071226 PL - Netherlands TA - Int J Antimicrob Agents JT - International journal of antimicrobial agents JID - 9111860 RN - 0 (Aminoglycosides) RN - 0 (Anti-Bacterial Agents) RN - 0 (Bacterial Proteins) RN - 0 (DNA Transposable Elements) RN - 0 (DNA, Bacterial) SB - IM MH - Aminoglycosides/*pharmacology MH - Anti-Bacterial Agents/*pharmacology MH - Bacterial Proteins/genetics MH - Blood/microbiology MH - *DNA Transposable Elements MH - DNA, Bacterial/genetics MH - Drug Resistance, Bacterial/*genetics MH - Enterococcus/drug effects/*genetics/isolation & purification MH - Gram-Positive Bacterial Infections/microbiology MH - Humans MH - Polymerase Chain Reaction/*methods MH - Thailand MH - Urine/microbiology EDAT- 2007/12/25 09:00 MHDA- 2008/05/07 09:00 CRDT- 2007/12/25 09:00 PHST- 2007/08/03 00:00 [received] PHST- 2007/10/11 00:00 [revised] PHST- 2007/10/13 00:00 [accepted] PHST- 2007/12/25 09:00 [pubmed] PHST- 2008/05/07 09:00 [medline] PHST- 2007/12/25 09:00 [entrez] AID - S0924-8579(07)00543-2 [pii] AID - 10.1016/j.ijantimicag.2007.10.019 [doi] PST - ppublish SO - Int J Antimicrob Agents. 2008 Mar;31(3):250-4. doi: 10.1016/j.ijantimicag.2007.10.019. Epub 2007 Dec 26.