Isolation and Characterization of a Salmonella enterica Serotype Typhi Variant and Its Clinical and Public Health Implications
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| Titel: | Isolation and Characterization of a Salmonella enterica Serotype Typhi Variant and Its Clinical and Public Health Implications |
|---|---|
| Autoren: | Woo, PCY, Yuen, KY, Tsoi, HW, Wong, SSY, Fung, AMY |
| Quelle: | Journal of Clinical Microbiology. 39:1190-1194 |
| Verlagsinformationen: | American Society for Microbiology, 2001. |
| Publikationsjahr: | 2001 |
| Schlagwörter: | DNA, Bacterial, Male, 0301 basic medicine, Salmonella typhi - classification - genetics - isolation & purification, Cholangitis, Molecular Sequence Data, Polymerase Chain Reaction, 03 medical and health sciences, RNA, Ribosomal, 16S, Cholecystitis, Humans, Amino Acid Sequence, Typhoid Fever, Transaminases, Cholangitis - microbiology, Cholecystitis - microbiology, Base Sequence, Transaminases - genetics, Genes, rRNA, Middle Aged, Salmonella typhi, Bacterial Typing Techniques, 3. Good health, Microscopy, Electron, Typhoid Fever - microbiology, Carbohydrate Epimerases, Flagellin |
| Beschreibung: | We report the isolation and characterization of a member of the family Enterobacteriaceae isolated from the gallbladder pus of a food handler. Conventional biochemical tests suggested Salmonella enterica serotype Typhi, but the isolate agglutinated with poly(O), 2O, 9O, and Vi Salmonella antisera but not with poly(H) or any individual H Salmonella antisera. 16S rRNA gene sequencing showed that there were two base differences between the isolate and Salmonella enterica serotype Montevideo, four base differences between the isolate and serotype Typhi, five base differences between the isolate and Salmonella enterica serotype Typhimurium, and six base differences between the isolate and Salmonella enterica serotype Dublin, indicating that the isolate was a strain of S. enterica . Electron microscopy confirmed that the isolate was aflagellated. The flagellin gene sequence of the isolate was 100% identical to that of the H1-d flagellin gene of serotype Typhi. Sequencing of the rfbE gene, which encoded the CDP-tyvelose epimerase of the isolate, showed that there was a point mutation at position +694 (G→T), leading to an amino acid substitution (Gly→Cys). This may have resulted in a protein of reduced catalytic activity and hence the presence of both 2O and 9O antigens. We therefore concluded that the isolate was a variant of serotype Typhi. Besides antibiotic therapy and cholecystectomy, removal of all stones in the biliary tree was performed for eradication of the carrier state. |
| Publikationsart: | Article |
| Dateibeschreibung: | 384 bytes; text/html |
| Sprache: | English |
| ISSN: | 1098-660X 0095-1137 |
| DOI: | 10.1128/jcm.39.3.1190-1194.2001 |
| Zugangs-URL: | https://jcm.asm.org/content/39/3/1190.full.pdf https://pubmed.ncbi.nlm.nih.gov/11230457 https://europepmc.org/abstract/MED/11230457 http://europepmc.org/abstract/MED/11230457 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC87903 https://journals.asm.org/doi/pdf/10.1128/JCM.39.3.1190-1194.2001 https://jcm.asm.org/content/jcm/39/3/1190.full.pdf https://jcm.asm.org/content/39/3/1190?cited-by=yesl39/3/1190r39/3/1190 http://hdl.handle.net/10722/49208 |
| Rights: | ASM Journals Non-Commercial TDM CC BY NC ND |
| Dokumentencode: | edsair.doi.dedup.....56e9ef71c4bdfc8ccd2c29b7db8c6f2e |
| Datenbank: | OpenAIRE |
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