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Wauters G, Sokal G, Legrand V, Bobbaers H, Heller P. Book Review. Acta Clin Belg 2016. [DOI: 10.1080/17843286.1993.11718300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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De Keukeleire S, De Bel A, Jansen Y, Janssens M, Wauters G, Piérard D. Yersinia ruckeri, an unusual microorganism isolated from a human wound infection. New Microbes New Infect 2014; 2:134-5. [PMID: 25356360 PMCID: PMC4184584 DOI: 10.1002/nmi2.56] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 05/21/2014] [Accepted: 05/26/2014] [Indexed: 11/10/2022] Open
Abstract
We report the first documented case of Yersinia ruckeri isolated from a wound infection, in a 16-year-old male after hitting a stone while paddling in a river.
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Affiliation(s)
- S De Keukeleire
- Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (VUB) Brussels, Belgium
| | - A De Bel
- Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (VUB) Brussels, Belgium
| | - Y Jansen
- Department of Surgery, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (VUB) Brussels, Belgium
| | - M Janssens
- National Reference Centre for Yersinia, Secteur des sciences de la santé - Pôle de Microbiologie Médicale, Université Catholique de Louvain Brussels, Belgium
| | - G Wauters
- National Reference Centre for Yersinia, Secteur des sciences de la santé - Pôle de Microbiologie Médicale, Université Catholique de Louvain Brussels, Belgium
| | - D Piérard
- Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (VUB) Brussels, Belgium
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Verroken A, Bauraing C, Deplano A, Bogaerts P, Huang D, Wauters G, Glupczynski Y. Epidemiological investigation of a nosocomial outbreak of multidrug-resistant Corynebacterium striatum at one Belgian university hospital. Clin Microbiol Infect 2013; 20:44-50. [PMID: 23586637 DOI: 10.1111/1469-0691.12197] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 02/17/2013] [Accepted: 02/18/2013] [Indexed: 12/01/2022]
Abstract
During an 8-month period, 24 Corynebacterium striatum isolates recovered from lower respiratory tract specimens of 10 hospitalized patients were characterized. The organisms were identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) and by 16S rRNA gene sequencing. The cluster of C. striatum exclusively affected patients who had been admitted to an intensive care unit and/or subsequently transferred to one medium-size respiratory care unit. Prolonged duration of hospitalization, advanced stage of chronic obstructive pulmonary disease, recent administration of antibiotics and exposure to an invasive diagnostic procedure were the most commonly found risk factors in these patients. Seven patients were colonized and three infected. All strains displayed a similar broad spectrum resistance to antimicrobial agents, remaining susceptible to vancomycin only. Typing analysis by MALDI-TOF MS and by semi-automated repetitive sequence-based PCR (DiversiLab typing) showed that all outbreak-associated C. striatum isolates clustered together in one single type while they differed markedly from epidemiologically unrelated C. striatum isolates. Pulsed-field gel electrophoresis (PFGE) profiles revealed three distinct PFGE types among the C. striatum isolates associated with the outbreak while all external strains except one belonged to a distinct type. We conclude that C. striatum is an opportunistic nosocomial pathogen in long-term hospitalized patients and can be at the origin of major outbreaks. The routine use of MALDI-TOF MS greatly facilitated the recognition/identification of this organism in clinical samples and this technique could also offer the potential to be used as an easy and rapid epidemiological typing tool for outbreak investigation.
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Affiliation(s)
- A Verroken
- Department of Clinical Microbiology, UCL Saint-Luc University Hospital, Brussels, Belgium
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Söderqvist K, Boqvist S, Wauters G, Vågsholm I, Thisted-Lambertz S. Yersinia enterocolitica in sheep--a high frequency of biotype 1A. Acta Vet Scand 2012; 54:39. [PMID: 22748116 PMCID: PMC3432015 DOI: 10.1186/1751-0147-54-39] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 05/16/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Pigs are regarded as the main reservoir for human pathogenic Yersinia enterocolitica, which is dominated by bioserotype 4/O:3. Other animals, including sheep, have occasionally been reported as carriers of pathogenic strains of Y. enterocolitica. To our knowledge, this is the first study performed in the Nordic countries in which the presence of Y. enterocolitica in sheep is investigated. METHODS Tonsils and faecal samples collected from sheep slaughtered on the island Gotland (Sweden) from September 2010 through January 2011 were analysed for presence of Y. enterocolitica. In an attempt to maximize recovery, several cultural strategies were applied. Various non-selective media were used and different temperatures and durations of the enrichment were applied before subculturing on Cefsulodin Irgasan Novobiocin (CIN) agar. Presumptive Y. enterocolitica colonies were subjected to urease, API 20E and agglutination test. Yersinia enterocolitica isolates were biotyped, serotyped, and tested for pathogenicity using a TaqMan PCR directed towards the ail-gene that is associated with human pathogenic strains of Y. enterocolitica. RESULTS The samples collected from 99 sheep yielded 567 presumptive Y. enterocolitica colonies. Eighty urease positive isolates, from 35 sheep, were identified as Y. enterocolitica by API 20E. Thirty-four of 35 further subtyped Y. enterocolitica isolates, all from faecal samples, belonged to biotype 1A serotype O:5, O:6. O:13,7 and O:10. One strain was Yersinia mollaretii serotype O:62. No human pathogenic strains of Y. enterocolitica were found in the investigated sheep. Other species identified were Y. kristensenii (n = 4), Y. frederiksenii/intermedia (n = 3), Providencia rettgeri (n = 2), Serratia marcescens (n = 1) and Raoultella ornithinolytica (n = 1). CONCLUSIONS This study does not support the hypothesis that sheep play an important role in transmission of the known human pathogenic Y. enterocolitica in the studied geographical region. However, because there are studies indicating that some strains of Y. enterocolitica biotype 1A may cause disease in humans, the relative importance of sheep as carriers of human pathogenic strains of Y. enterocolitica remains unclear. Tonsils do not appear to be favourable sites for Y. enterocolitica biotype 1A in sheep.
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Van Caneghem J, Vermeulen I, Block C, Van Brecht A, Van Royen P, Jaspers M, Wauters G, Vandecasteele C. Destruction and formation of PCDD/Fs in a fluidised bed combustor co-incinerating automotive shredder residue with refuse derived fuel and wastewater treatment sludge. J Hazard Mater 2012; 207-208:152-158. [PMID: 21621915 DOI: 10.1016/j.jhazmat.2011.04.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Revised: 04/01/2011] [Accepted: 04/14/2011] [Indexed: 05/30/2023]
Abstract
During an eight day trial automotive shredder residue (ASR) was added to the usual waste feed of a Fluidized Bed Combustor (FBC) for waste-to-energy conversion; the input waste mix consisted of 25% ASR, 25% refuse-derived fuel (RDF) and 50% wastewater treatment (WWT) sludge. All inputs and outputs were sampled and the concentration of the 17 PCDD/Fs with TEF-values was determined in order to obtain "PCDD/F fingerprints". The ASR contained approximately 9000 ng PCDD/Fs/kg(DW), six times more than the RDF and 10 times more than the WWT sludge. The fingerprint of ASR and RDF was dominated by HpCDD and OCDD, which accounted for 90% of the total PDDD/F content, whereas the WWT sludge contained relatively more HpCDFs and OCDF (together 70%). The flue gas cleaning residue (FGCR) and fly and boiler ash contained approximately 30,000 and 2500 ng PCDD/Fs/kg(DW), respectively. The fingerprints of these outputs were also dominated by HpCDFs and OCDF. The bottom ash contained only OCDD and OCDF, in total 8 ng PCDD/Fs/kg (DW). From the comparison of the bottom ash fingerprints with the fingerprints of the other output fractions and of the inputs, it could be concluded that the PCDD/Fs in the waste were destroyed and new PCDD/Fs were formed in the post combustion process by de novo synthesis. During the ASR-co-incineration, the PCDD/F congener concentrations in the fly and boiler ash, FGCR and flue gas were 1.25-10 times higher compared to the same output fractions generated during incineration of the usual waste mix (70% RDF and 30% WWT sludge). The concentration of the higher chlorinated PCDD/Fs increased most. As these congeners have the lowest TEF-factors, the total PCDD/F output, expressed in kg TEQ/year, of the FBC did not increase significantly when ASR was co-incinerated. Due to the relatively high copper levels in the ASR, the copper concentrations in the FBCs outputs increased. As copper catalysis the de novo syntheses, this could explain the increase in PCDD/F concentrations in these outputs.
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Affiliation(s)
- J Van Caneghem
- Department of Chemical Engineering, University of Leuven, W. De Croylaan 46, 3001 Heverlee, Belgium.
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Wauters G, Janssens M, De Baere T, Vaneechoutte M, Deschaght P. Isolates belonging to CDC group II-i belong predominantly to Sphingobacterium mizutaii Yabuuchi et al. 1983: emended descriptions of S. mizutaii and of the genus Sphingobacterium. Int J Syst Evol Microbiol 2011; 62:2598-2601. [PMID: 22199213 DOI: 10.1099/ijs.0.037325-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two clinical strains, NF 296 and NF 931, present in our collection, were identified biochemically as members of CDC group II-i. Determination of the 16S rRNA gene sequence revealed highest similarity with strains of Sphingobacterium mizutaii. Because these strains produced indole, whereas S. mizutaii has been described as indole-negative, we also investigated the type strain and a reference strain of S. mizutaii, LMG 8340(T) (=CCUG 15907(T)) and LMG 8341 (=CCUG 15908), and found both strains also to be positive for indole production. These data warrant inclusion of some of the CDC group II-i strains into S. mizutaii and emended descriptions of Sphingobacterium mizutaii as indole-production-positive and of the genus Sphingobacterium as variable for indole production.
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Affiliation(s)
- Georges Wauters
- Medical Microbiology, University of Louvain, UCL, Brussels 1200, Belgium
| | - Michèle Janssens
- Medical Microbiology, University of Louvain, UCL, Brussels 1200, Belgium
| | - Thierry De Baere
- Laboratory Bacteriology Research (LBR), Department Clinical Chemistry, Microbiology, Immunology, University of Ghent, Sint-Pietersnieuwstraat 25, Ghent 9000, Belgium.,Laboratory Molecular Diagnostics, Heilig Hartziekenhuis Roeselare, Wilgenstraat 2, Roeselare 8800, Belgium
| | - Mario Vaneechoutte
- Laboratory Bacteriology Research (LBR), Department Clinical Chemistry, Microbiology, Immunology, University of Ghent, Sint-Pietersnieuwstraat 25, Ghent 9000, Belgium
| | - Pieter Deschaght
- Laboratory Bacteriology Research (LBR), Department Clinical Chemistry, Microbiology, Immunology, University of Ghent, Sint-Pietersnieuwstraat 25, Ghent 9000, Belgium
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Deschaght P, Janssens M, Vaneechoutte M, Wauters G. Psychrobacter isolates of human origin, other than Psychrobacter phenylpyruvicus, are predominantly Psychrobacter faecalis and Psychrobacter pulmonis, with emended description of P. faecalis. Int J Syst Evol Microbiol 2011; 62:671-674. [PMID: 21551328 DOI: 10.1099/ijs.0.032631-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Human Psychrobacter isolates, other than Psychrobacter phenylpyruvicus, are predominantly designated Psychrobacter immobilis. Phenotypic and genotypic testing of Psychrobacter isolates that have been deposited in different culture collections as P. immobilis indicates that most of these human isolates belong to the species Psychrobacter faecalis and Psychrobacter pulmonis.
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Affiliation(s)
- Pieter Deschaght
- Laboratory Bacteriology Research (LBR), Department Clinical Chemistry, Microbiology, Immunology, University of Ghent, Ghent, Belgium
| | - Michèle Janssens
- Medical Microbiology, University of Louvain, UCL, Brussels, Belgium
| | - Mario Vaneechoutte
- Laboratory Bacteriology Research (LBR), Department Clinical Chemistry, Microbiology, Immunology, University of Ghent, Ghent, Belgium
| | - Georges Wauters
- Medical Microbiology, University of Louvain, UCL, Brussels, Belgium
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Adams NG, Adekambi T, Afeltra J, Aguado J, Aires de Sousa M, Akiyoshi K, Al Hasan M, Ala-Kokko T, Albert M, Alfandari S, Allen D, Allerberger F, Almyroudis N, Alp E, Amin R, Anderson-Berry A, Andes DR, Andremont A, Andreu A, Angelakis M, Antachopoulos C, Antoniadou A, Arabatzis M, Arlet G, Arnez M, Arnold C, Asensio A, Asseray N, Ausiello C, Avni T, Ayling R, Baddour L, Baguelin M, Bányai K, Barbour A, Basco LK, Bauer D, Bayston R, Beall B, Becker K, Behr M, Bejon P, Belliot G, Benito-Fernandez J, Benjamin D, Benschop K, Berencsi G, Bergeron MG, Bernard K, Berner R, Beyersmann J, Bille J, Bizzini A, Bjarnsholt T, Blanc D, Blanco J, Blot S, Bohnert J, Boillat N, Bonomo R, Bonten M, Bordon JM, Borel N, Boschiroli ML, Bosilkovski M, Bosso JA, Botelho-Nevers E, Bou G, Bretagne S, Brouqui P, Brun-Buisson C, Brunetto M, Bucher H, Buchheidt D, Buckling A, Bulpa P, Cambau E, Canducci F, Cantón R, Capobianchi M, Carattoli A, Carcopino X, Cardona-Castro N, Carling PC, Carrat F, Castilla J, Castilletti C, Cavaco L, Cavallo R, Ceccherini-Silberstein F, Centrón D, Chappuis F, Charrel R, Chen M, Chevaliez S, Chezzi C, Chomel B, Chowers M, Chryssanthou E, Ciammaruconi A, Ciccozzi M, Cid J, Ciofu O, Cisneros D, Ciufolini MG, Clark C, Clarke SC, Clayton R, Clementi M, Clemons K, Cloeckaert A, Cloud J, Coenye T, Cohen Bacri S, Cohen R, Coia J, Colombo A, Colson P, Concerse P, Cordonnier C, Cormican M, Cornaglia G, Cornely O, Costa S, Cots F, Craxi A, Creti R, Crnich C, Cuenca Estrella M, Cusi MG, d'Ettorre G, da Cruz Lamas C, Daikos G, Dannaoui E, De Barbeyrac B, De Grazia S, de Jager C, de Lamballerie X, de Marco F, del Palacio A, Delpeyroux F, Denamur E, Denis O, Depaquit J, Deplano A, Desenclos JC, Desjeux P, Deutch S, Di Luca D, Dianzani F, Diep B, Diestra K, Dignani C, Dimopoulos G, Divizia M, Doi Y, Dornbusch HJ, Dotis J, Drancourt M, Drevinek P, Dromer F, Dryden M, Dubreuil L, Dubus JC, Dumitrescu O, Dumke R, DuPont H, Edelstein M, Eggimann P, Eis-Huebinger AM, El Atrouni WI, Entenza J, Ergonul O, Espinel-Ingroff A, Esteban J, Etienne J, Fan XG, Fenollar F, Ferrante P, Ferrieri P, Ferry T, Feuchtinger T, Finegold S, Fingerle V, Fitch M, Fitzgerald R, Flori P, Fluit A, Fontana R, Fournier PE, François M, Francois P, Freedman DO, Friedrich A, Gallego L, Gallinella G, Gangneux JP, Gannon V, Garbarg-Chenon A, Garbino J, Garnacho-Montero J, Gatermann S, Gautret P, Gentile G, Gerlich W, Ghannoum M, Ghebremedhin B, Ghigo E, Giamarellos-Bourboulis E, Girgis R, Giske C, Glupczynski Y, Gnarpe J, Gomez-Barrena E, Gorwitz RJ, Gosselin R, Goubau P, Gould E, Gradel K, Gray J, Gregson D, Greub G, Grijalva CG, Groll A, Groschup M, Gutiérrez J, Hackam DG, Hall WA, Hallett R, Hansen S, Harbarth S, Harf-Monteil C, Hasanjani RMR, Hasler P, Hatchette T, Hauser P, He Q, Hedges A, Helbig J, Hennequin C, Herrmann B, Hezode C, Higgins P, Hoesli I, Hoiby N, Hope W, Houvinen P, Hsu LY, Huard R, Humphreys H, Icardi M, Imoehl M, Ivanova K, Iwamoto T, Izopet J, Jackson Y, Jacobsen K, Jang TN, Jasir A, Jaulhac B, Jaureguy F, Jefferies JM, Jehl F, Johnstone J, Joly-Guillou ML, Jonas M, Jones M, Joukhadar C, Kahl B, Kaier K, Kaiser L, Kato H, Katragkou A, Kearns A, Kern W, Kerr K, Kessin R, Kibbler C, Kimberlin D, Kittang B, Klaassen C, Kluytmans J, Ko WC, Koh WJ, Kostrzewa M, Kourbeti I, Krause R, Krcmery V, Krizova P, Kuijper E, Kullberg BJ, Kumar G, Kunin CM, La Scola B, Lagging M, Lagrou K, Lamagni T, Landini P, Landman D, Larsen A, Lass-Floerl C, Laupland K, Lavigne JP, Leblebicioglu H, Lee B, Lee CH, Leggat P, Lehours P, Leibovici L, Leon L, Leonard N, Leone M, Lescure X, Lesprit P, Levy PY, Lew D, Lexau CA, Li SY, Li W, Lieberman D, Lina B, Lina G, Lindsay JA, Livermore D, Lorente L, Lortholary O, Lucet JC, Lund B, Lütticken R, MacLeod C, Madhi S, Maertens J, Maggi F, Maiden M, Maillard JY, Maira-Litran T, Maltezou H, Manian FA, Mantadakis E, Maragakis L, Marcelin AG, Marchaim D, Marchetti O, Marcos M, Markotic A, Martina B, Martínez J, Martinez JL, Marty F, Maurin M, McGee L, Mediannikov O, Meersseman W, Megraud F, Meletiadis J, Mellmann A, Meyer E, Meyer W, Meylan P, Michalopoulos A, Micol R, Midulla F, Mikami Y, Miller RF, Miragaia M, Miriagou V, Mitchell TJ, Miyakis S, Mokrousov I, Monecke S, Mönkemüller K, Monno L, Monod M, Morales G, Moriarty F, Morosini I, Mortensen E, Mubarak K, Mueller B, Mühlemann K, Muñoz Bellido JL, Murray P, Muscillo M, Mylotte J, Naessens A, Nagy E, Nahm MH, Nassif X, Navarro D, Navarro F, Neofytos D, Nes I, Ní Eidhin D, Nicolle L, Niederman MS, Nigro G, Nimmo G, Nordmann P, Nougairède A, Novais A, Nygard K, Oliveira D, Orth D, Ortiz JR, Osherov N, Österblad M, Ostrosky-Zeichner L, Pagano L, Palamara AT, Pallares R, Panagopoulou P, Pandey P, Panepinto J, Pappas G, Parkins M, Parola P, Pasqualotto A, Pasteran F, Paul M, Pawlotsky JM, Peeters M, Peixe L, Pepin J, Peralta G, Pereyre S, Perfect JR, Petinaki E, Petric M, Pettigrew M, Pfaller M, Philipp M, Phillips G, Pichichero M, Pierangeli A, Pierard D, Pigrau C, Pilishvili T, Pinto F, Pistello M, Pitout J, Poirel L, Poli G, Poppert S, Posfay-Barbe K, Pothier P, Poxton I, Poyart C, Pozzetto B, Pujol M, Pulcini C, Punyadeera C, Ramirez M, Ranque S, Raoult D, Rasigade JP, Re MC, Reilly JS, Reinert R, Renaud B, Rice L, Rich S, Richet H, Rigouts L, Riva E, Rizzo C, Robotham J, Rodicio MR, Rodriguez J, Rodriguez-Bano J, Rogier C, Roilides E, Rolain JM, Rooijakkers S, Rooney P, Rossi F, Rotimi V, Rottman M, Roux V, Ruhe J, Russo G, Sadowy E, Sagel U, Said SI, Saijo M, Sak B, Sa-Leao R, Sanders EAM, Sanguinetti M, Sarrazin C, Savelkoul P, Scheifele D, Schmidt WP, Schønheyder H, Schönrich G, Schrenzel J, Schubert S, Schwarz K, Schwarz S, Sefton A, Segondy M, Seifert H, Seng P, Senneville E, Sexton D, Shafer RW, Shalit I, Shankar N, Shata TM, Shields J, Sibley C, Sicinschi L, Siljander T, Simitsopoulou M, Simoons-Smit AM, Sissoko D, Sjögren J, Skiada A, Skoczynska A, Skov R, Slack M, Sogaard M, Sola C, Soriano A, Sotto A, Sougakoff W, Sougakoff W, Souli M, Spelberg B, Spelman D, Spiliopoulou I, Springer B, Stefani S, Stein A, Steinbach WJ, Steinbakk M, Strakova L, Strenger V, Sturm P, Sullivan P, Sutton D, Symmons D, Tacconelli E, Tamalet C, Tang JW, Tang YW, Tattevin P, Thibault V, Thomsen RW, Thuny F, Tong S, Torres C, Townsend R, Tristan A, Trouillet JL, Tsai HC, Tsitsopoulos P, Tuerlinckx D, Tulkens P, Tumbarello M, Tureen J, Turnidge JD, Turriziani O, Tutuian R, Uçkay I, Upton M, Vabret A, Vamvakas EC, van den Boom D, Van Eldere J, van Leeuwen W, van Strijp J, Van Veen S, Vandamme P, Vandenesch F, Vayssier M, Velin D, Venditti M, Venter M, Venuti A, Vergnaud G, Verheij T, Verhofstede C, Viscoli C, Vizza CD, Vogel U, Waller A, Wang YF, Warn P, Warris A, Wauters G, Weidmann M, Weill FX, Weinberger M, Welch D, Wellinghausen N, Wheat J, Widmer A, Wild F, Willems R, Willinger B, Winstanley C, Witte W, Wolff M, Wong F, Wootton M, Wyllie D, Xu W, Yamamoto S, Yaron S, Yildirim I, Zaoutis T, Zazzi M, Zbinden R, Zehender GG, Zemlickova H, Zerbini ML, Zhang L, Zhang Y, Zhao YD, Zhu Z, Zimmerli W. ACKNOWLEDGEMENT OF REVIEWERS. Clin Microbiol Infect 2011. [DOI: 10.1111/j.1469-0691.2010.03428.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Cooreman S, Schuermans C, Van Schaeren J, Olive N, Wauters G, Verhaegen J, Jeurissen A. Bacteraemia caused by Leptotrichia trevisanii in a neutropenic patient. Anaerobe 2010; 17:1-3. [PMID: 21184838 DOI: 10.1016/j.anaerobe.2010.12.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Accepted: 12/07/2010] [Indexed: 11/25/2022]
Abstract
We describe an episode of Leptotrichia trevisanii bacteraemia in a neutropenic hemato-oncology patient receiving chemotherapy for Refractory Anemia with Excess Blasts-2 (RAEB-2). Although Leptotrichia spp. colonize the oral cavity and genitourinary tract, serious episodes of bacteraemia might occur in immunocompromised patients, particularly in those with severe neutropenia. Therefore, microbiologists should consider the possibility of Leptotrichia spp. septicemia in patients with blood cultures positive for gram negative bacilli, when routine microbiology tests fail to reveal a correct identification of the organism.
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Affiliation(s)
- S Cooreman
- Department of Microbiology, GZA Sint-Augustinus, Wilrijk, Belgium.
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Van Caneghem J, Block C, Vermeulen I, Van Brecht A, Van Royen P, Jaspers M, Wauters G, Vandecasteele C. Mass balance for POPs in a real scale fluidized bed combustor co-incinerating automotive shredder residue. J Hazard Mater 2010; 181:827-835. [PMID: 20541864 DOI: 10.1016/j.jhazmat.2010.05.088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2010] [Revised: 05/18/2010] [Accepted: 05/18/2010] [Indexed: 05/29/2023]
Abstract
The European directive 2000/53/EC implies a "reuse and recovery" rate for end-of-life vehicles (ELVs) of 95% to be reached by the year 2015. One of the options to increase the actual average European "reuse and recovery" rate of approximately 78% (EU 15, 2008) is incineration of automotive shredder residue (ASR) with energy-recovery. The mass balance and the congener fingerprints for PCDD/Fs, dioxin-like PCBs, PCBs and PAHs in a real scale fluidized bed combustor (FBC) incinerating 25% ASR with 25% refuse derived fuel (RDF) and 50% waste water treatment sludge (WWT sludge) were investigated. The PCDD/F, dioxin-like PCB, PCB and PAH concentrations in this input waste mix were more than hundred times higher than in the usual waste feed of the incinerator (30% RFD and 70% WWT sludge). In the outputs of the FBC, however, the concentrations of these POP groups were comparable or only slightly higher than in the outputs generated during the incineration of the usual waste feed. The considered POPs in the waste were destroyed efficiently and the formation of new POPs during cooling of the flue gas appeared to a large extent independent of the POP concentrations in the incinerated waste.
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Affiliation(s)
- J Van Caneghem
- Department of Chemical Engineering, University of Leuven, Heverlee, Belgium.
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Van Caneghem J, Block C, Van Brecht A, Wauters G, Vandecasteele C. Mass balance for POPs in hazardous and municipal solid waste incinerators. Chemosphere 2010; 78:701-708. [PMID: 20022623 DOI: 10.1016/j.chemosphere.2009.11.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2009] [Revised: 11/24/2009] [Accepted: 11/25/2009] [Indexed: 05/28/2023]
Abstract
The amount of different persistent organic pollutants (POPs) in the input of waste incinerators was compared to that in the output. Three cases were considered: a rotary kiln incinerating hazardous waste, a grate furnace incinerating municipal solid waste (MSW) and the same grate furnace co-incinerating plastics of waste of electrical and electronic equipment (WEEE) and automotive shredder residue (ASR) with MSW. The mass balance for PCBs in the rotary kiln indicates that these POPs are destroyed effectively during incineration. The grate furnace can be a sink or source of PCDD/Fs and PCBs depending on the concentrations in the incinerated waste. In order to compare the total amount of POPs in input and output, a methodology was developed whereby the amount of POPs was weighed according to minimal risk doses (MRDs) or cancer potency factors. For both incinerators the PCDD/Fs, PCBs and polyaromatic hydrocarbons (PAHs) are the main contributors to total weighed POP output. In MSW, the PCDD/Fs, PBDD/Fs and polybrominated diphenylethers (PBDEs) are the main contributors to the weighed POP input. The ratios of the weighed POP-input over -output clearly indicate that the rotary kiln incinerating hazardous waste is a weighed POP sink. The grate furnace incinerating MSW is a weighed POP sink or source depending on the POP-concentrations in the waste, but the difference between output and input is rather limited. When e.g. ASR and plastics of WEEE, containing high concentrations of PBDEs and PCBs, are co-incinerated in the grate furnace, it is clearly a weighed POP sink.
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Affiliation(s)
- J Van Caneghem
- Department of Chemical Engineering, University of Leuven, De Croylaan 46, 3001 Heverlee, Belgium.
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12
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Kampfer P, Vaneechoutte M, Lodders N, De Baere T, Avesani V, Janssens M, Busse HJ, Wauters G. Description of Chryseobacterium anthropi sp. nov. to accommodate clinical isolates biochemically similar to Kaistella koreensis and Chryseobacterium haifense, proposal to reclassify Kaistella koreensis as Chryseobacterium koreense comb. nov. and emended description of the genus Chryseobacterium. Int J Syst Evol Microbiol 2009; 59:2421-8. [DOI: 10.1099/ijs.0.008250-0] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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13
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Kämpfer P, Lodders N, Vaneechoutte M, Wauters G. Transfer of Sejongia antarctica, Sejongia jeonii and Sejongia marina to the genus Chryseobacterium as Chryseobacterium antarcticum comb. nov., Chryseobacterium jeonii comb. nov. and Chryseobacterium marinum comb. nov. Int J Syst Evol Microbiol 2009; 59:2238-40. [PMID: 19620362 DOI: 10.1099/ijs.0.009142-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The genus Sejongia was described in 2005, with the two species Sejongia antarctica and Sejongia jeonii, mainly on the basis of 16S rRNA gene sequence analysis. At that time, these organisms formed a quite separate branch in a 16S rRNA gene sequence-based tree, but, in subsequent studies, it became obvious that the species S. antarctica and S. jeonii and a third species, Sejongia marina, were most closely related (>95.0% similarity) to some Chryseobacterium species (e.g. Chryseobacterium hominis, C. formosense and C. haifense). In addition, there is no evidence for clear phenotypic (i.e. chemotaxonomic) differences between these organisms that justifies their assignment to different genera. For these reasons, a proposal is made to transfer these species to the genus Chryseobacterium as Chryseobacterium antarcticum comb. nov. (type strain AT1013T=JCM 12381T=IMSNU 14040T=KCTC 12225T), Chryseobacterium jeonii comb. nov. (type strain AT1047T=JCM 12382T=IMSNU 14049T=KCTC 12226T) and Chryseobacterium marinum comb. nov. (type strain IMCC3228T=KCCM 42689T=NBRC 103143T) on the basis of 16S rRNA gene sequence data and published phenotypic data.
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Affiliation(s)
- Peter Kämpfer
- Institut für Angewandte Mikrobiologie, Justus-Liebig-Universität Giessen, Germany.
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14
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Blaimont B, Charlier J, Wauters G. Comparative Distribution ofEnterococcusSpecies in Faeces and Clinical Samples. Microbial Ecology in Health and Disease 2009. [DOI: 10.3109/08910609509140084] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- B. Blaimont
- University of Louvain, Microbiology Unit, 1200, Brussels, Belgium
| | - J. Charlier
- University of Louvain, Microbiology Unit, 1200, Brussels, Belgium
| | - G. Wauters
- University of Louvain, Microbiology Unit, 1200, Brussels, Belgium
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15
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Kämpfer P, Vaneechoutte M, Wauters G. Chryseobacterium arothri Campbell et al. 2008 is a later heterotypic synonym of Chryseobacterium hominis Vaneechoutte et al. 2007. Int J Syst Evol Microbiol 2009; 59:695-7. [PMID: 19329590 DOI: 10.1099/ijs.0.004093-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The type strains of the species Chryseobacterium arothri (DSM 19326(T)) and Chryseobacterium hominis (NF802(T)) were compared in order to clarify the taxonomic relationship of the two species. The 16S rRNA gene sequences of the two strains shared 99.9 % identity. DNA-DNA pairing studies between the two strains showed 100 % (reciprocal, 76.0 %) relatedness. Phenotypic data, including fatty acid patterns and substrate utilization profiles, showed no pronounced differences between the type strains of the two species. On the basis of these results, we propose the reclassification of Chryseobacterium arothri Campbell et al. 2008 as a later heterotypic synonym of Chryseobacterium hominis Vaneechoutte et al. 2007.
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Affiliation(s)
- Peter Kämpfer
- Institut für Angewandte Mikrobiologie, Justus-Liebig-Universität Giessen, Germany
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16
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Jourdain S, Miendje Deyi VY, Musampa K, Wauters G, Denis O, Lepage P, Vergison A. Kytococcus schroeteri infection of a ventriculoperitoneal shunt in a child. Int J Infect Dis 2008; 13:e153-5. [PMID: 19010078 DOI: 10.1016/j.ijid.2008.09.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2008] [Revised: 09/02/2008] [Accepted: 09/04/2008] [Indexed: 10/21/2022] Open
Abstract
Kytococcus schroeteri is a newly described micrococcal species and, to date, has been associated mostly with endocarditis. Six infections attributable to this opportunistic pathogen have been described since 2002, when the first case was identified. We describe here the first pediatric case of a K. schroeteri ventriculoperitoneal shunt infection. The child was successfully treated with a combination of rifampin and vancomycin and shunt replacement. Initially identified as a Micrococcus spp. by both automated identification and conventional biochemical testing, sequencing of the 16S ribosomal RNA gene enabled accurate identification of the organism.
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Affiliation(s)
- Sarah Jourdain
- Infectious Diseases and Infection Control Unit, Université Libre de Bruxelles, Hôpital Universitaire des Enfants Reine Fabiola, Brussels, Belgium.
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17
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Vaneechoutte M, Kämpfer P, De Baere T, Avesani V, Janssens M, Wauters G. Chryseobacterium hominis sp. nov., to accommodate clinical isolates biochemically similar to CDC groups II-h and II-c. Int J Syst Evol Microbiol 2007; 57:2623-2628. [DOI: 10.1099/ijs.0.65158-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A collection of eight clinical strains from Belgian hospitals and three clinical strains of the CCUG collection were characterized biochemically as being similar to CDC groups II-h and II-c; the latter differs from group II-h only by positivity for sucrose acidification. These 11 strains were found to cluster according to 16S rRNA gene sequence similarity at a level of ≥99.5 %, and on the basis of their tDNA-PCR profile. Based on 16S rRNA gene sequence analysis, this collection of strains was related most closely to Chryseobacterium hispanicum (97.2 %), but they differed from the type strain of this species by the following phenotypic characteristics: growth at 37 °C, negativity for xylose acidification, positivity for acetate assimilation–alkalinization on Simmons’ agar base and absence of flexirubin pigments, and by their tDNA-PCR profile. Strain NF802T showed only 57.8 % DNA–DNA relatedness to the type strain of C. hispanicum. Fatty acid composition did not enable differentiation from C. hispanicum. The DNA G+C content of strain NF802T is 36.5 mol%. The name Chryseobacterium hominis sp. nov. is proposed for this taxon, with type strain NF802T (=CCUG 52711T=CIP 109415T).
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Affiliation(s)
- Mario Vaneechoutte
- Department of Clinical Chemistry, Microbiology and Immunology, University of Ghent, Ghent, Belgium
| | - Peter Kämpfer
- Institut für Angewandte Mikrobiologie, Justus-Liebig-Universität Giessen, Germany
| | - Thierry De Baere
- Department of Clinical Chemistry, Microbiology and Immunology, University of Ghent, Ghent, Belgium
| | - Véronique Avesani
- Microbiology Unit, Faculty of Medicine, University of Louvain, Brussels, Belgium
| | - Michèle Janssens
- Microbiology Unit, Faculty of Medicine, University of Louvain, Brussels, Belgium
| | - Georges Wauters
- Microbiology Unit, Faculty of Medicine, University of Louvain, Brussels, Belgium
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18
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Huys G, Vancanneyt M, D'Haene K, Falsen E, Wauters G, Vandamme P. Alloscardovia omnicolens gen. nov., sp. nov., from human clinical samples. Int J Syst Evol Microbiol 2007; 57:1442-1446. [PMID: 17625172 DOI: 10.1099/ijs.0.64812-0] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The taxonomic position of 12 isolates tentatively assigned to the genus Bifidobacterium on the basis of a limited phenotypic characterization was examined. The isolates were collected between 1978 and 2005 in Belgium, Sweden and Norway, and originated from various human clinical samples, including urine, blood, urethra, oral cavity, tonsil, and abscesses of lung and aortic valve. On the basis of band number and clustering analysis, repetitive DNA element-based PCR fingerprinting using the BOXA1R and (GTG)(5) primers indicated that the clinical isolates represented a taxon probably not belonging to the genus Bifidobacterium. Analysis of 16S rRNA gene sequence similarities revealed that the isolates were most closely affiliated to Parascardovia denticolens LMG 18312(T) (93.0-93.2 %), Scardovia inopinata LMG 18313(T) (92.9-93.1 %) and other members of the Bifidobacteriaceae, indicating that the isolates belong to a novel genus within that family. This observation was further substantiated by the results of partial sequencing of the heat-shock protein 60 gene (hsp60) and determination of the DNA G+C contents (47.3-48.3 mol%). Members of the novel taxon can be phenotypically distinguished from S. inopinata, P. denticolens and Gardnerella vaginalis by the ability to grow on agar under aerobic conditions and on the basis of positive reactions for acid production from L-arabinose, raffinose, salicin and D-xylose. Unambiguous phenotypic differentiation from Aeriscardovia aeriphila and Bifidobacterium species may be difficult, so phenotypic analyses should be complemented by molecular methods. The values for DNA-DNA binding among four members of the novel genus were in the range of 89-100 %, indicating that the strains should be considered as a single novel species of a novel genus, for which the name Alloscardovia omnicolens gen. nov., sp. nov. is proposed. The type strain of Alloscardovia omnicolens is CCUG 31649(T) (=LMG 23792(T)).
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MESH Headings
- Actinobacteria/classification
- Actinobacteria/genetics
- Actinobacteria/isolation & purification
- Actinobacteria/metabolism
- Aerobiosis
- Bacterial Proteins/genetics
- Bacterial Typing Techniques
- Base Composition
- Belgium
- Chaperonin 60/genetics
- Cluster Analysis
- DNA Fingerprinting
- DNA, Bacterial/chemistry
- DNA, Bacterial/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- Fermentation
- Genes, rRNA
- Genotype
- Gram-Positive Bacterial Infections/microbiology
- Humans
- Molecular Sequence Data
- Norway
- Nucleic Acid Hybridization
- Phylogeny
- Polymerase Chain Reaction
- RNA, Bacterial/genetics
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, DNA
- Sequence Homology, Nucleic Acid
- Sweden
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Affiliation(s)
- Geert Huys
- Laboratory of Microbiology, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Marc Vancanneyt
- BCCM/LMG Bacteria Collection, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Klaas D'Haene
- Laboratory of Microbiology, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Enevold Falsen
- CCUG Culture Collection, University of Göteborg, Guldhedsgatan 10, SE-413 46 Göteborg, Sweden
| | - Georges Wauters
- University of Louvain, Microbiology Unit UCL 5490, Avenue Hippocrate 54, B-1200 Brussels, Belgium
| | - Peter Vandamme
- Laboratory of Microbiology, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
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19
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Vandecasteele C, Wauters G, Arickx S, Jaspers M, Van Gerven T. Integrated municipal solid waste treatment using a grate furnace incinerator: the Indaver case. Waste Manag 2007; 27:1366-75. [PMID: 17049223 DOI: 10.1016/j.wasman.2006.08.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2005] [Revised: 06/29/2006] [Accepted: 08/10/2006] [Indexed: 05/12/2023]
Abstract
An integrated installation for treatment of municipal solid waste and comparable waste from industrial origin is described. It consists of three grate furnace lines with flue gas treatment by half-wet scrubbing followed by wet scrubbing, and an installation for wet treatment of bottom ash. It is demonstrated that this integrated installation combines high recovery of energy (40.8% net) with high materials recovery. The following fractions were obtained after wet treatment of the bottom ash: ferrous metals, non-ferrous metals, three granulate fractions with different particle sizes, and sludge. The ferrous and non-ferrous metal fractions can both be recycled as high quality raw materials; the two larger particle size particle fractions can be applied as secondary raw materials in building applications; the sand fraction can be used for applications on a landfill; and the sludge is landfilled. For all components of interest, emissions to air are below the limit values. The integrated grate furnace installation is characterised by zero wastewater discharge and high occupational safety. Moreover, with the considered installation, major pollutants, such as PCDD/PCDF, Hg and iodine-136 are to a large extent removed from the environment and concentrated in a small residual waste stream (flue gas cleaning residue), which can be landfilled after stabilisation.
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Affiliation(s)
- C Vandecasteele
- Department of Chemical Engineering, Katholieke Universiteit Leuven, De Croylaan 46, 3001 Leuven, Belgium.
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20
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Glupczynski Y, Berhin C, Janssens M, Wauters G. Determination of antimicrobial susceptibility patterns of Nocardia spp. from clinical specimens by Etest. Clin Microbiol Infect 2006; 12:905-12. [PMID: 16882297 DOI: 10.1111/j.1469-0691.2006.01460.x] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Susceptibilities to 11 antimicrobial agents were determined by Etest for 93 Nocardia isolates from clinical specimens and 15 type strains belonging to different Nocardia spp. All isolates were susceptible to trimethoprim-sulphamethoxazole, amikacin and linezolid, but susceptibilities of the various Nocardia spp. to beta-lactams, aminoglycosides, ciprofloxacin and clarithromycin varied markedly. Overall, there was a good correlation between the drug resistance patterns and the species identification established by conventional phenotypic tests and 16S rDNA sequencing. Among the different species encountered, Nocardia farcinica and Nocardia brasiliensis displayed the most multiresistant profiles, with resistance to imipenem occurring mainly among isolates of N. brasiliensis and Nocardia abscessus. The species variability in susceptibility profiles and the numerous recent taxonomic changes means that in-vitro susceptibility tests may be a complementary tool for the identification of Nocardia isolates from human clinical specimens. Further studies on a larger number of species from more diverse geographical sources, including species that are found less commonly among clinical isolates, are required to validate and extend the results.
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Affiliation(s)
- Y Glupczynski
- Department of Clinical Microbiology, UCL Mont-Godinne University Hospital, Yvoir, Belgium.
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21
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Fonteyn N, Wauters G, Vandercam B, Degraux J, Avesani V, Vincent V, Delmée M. Mycobacterium mucogenicum sepsis in an immunocompetent patient. J Infect 2006; 53:e143-6. [PMID: 16403579 DOI: 10.1016/j.jinf.2005.11.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2004] [Accepted: 11/17/2005] [Indexed: 10/24/2022]
Abstract
We report a case of Mycobacterium mucogenicum sepsis in an immunocompetent woman with Münchausen syndrome presenting with multiple abscesses.
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Affiliation(s)
- Nathalie Fonteyn
- Microbiology Unit, Catholic University of Louvain, St-Luc Hospital, UCL/5490, Avenue Hippocrate, 54, B-1200 Brussels, Belgium.
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22
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Matthys C, Claeys G, Verschraegen G, Wauters G, Vogelaers D, De Baere T, Verhelst R, Van Nooten G, Van Coster R, Vaneechoutte M. Streptococcus cristatus isolated from a resected heart valve and blood cultures: case reports and application of phenotypic and genotypic techniques for identification. Acta Clin Belg 2006; 61:196-200. [PMID: 17091918 DOI: 10.1179/acb.2006.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
BACKGROUND Viridans streptococci are known as an important cause of endocarditis, but at present no cases of endocarditis caused by Streptococcus cristatus have been published, probably because phenotypic identification of viridans streptococci is tedious. Using tDNA-PCR, it is possible to identify to species level and to differentiate between species of the viridans group.
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Affiliation(s)
- Charlotte Matthys
- Dienst Klinische Chemie, Microbiologie en Immunologie, Universitair Ziekenhuis Gent, De Pintelaan 185, B-9000 Gent, België.
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23
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Detry G, Pierard D, Vandoorslaer K, Wauters G, Avesani V, Glupczynski Y. Septicemia due to Solobacterium moorei in a patient with multiple myeloma. Anaerobe 2006; 12:160-2. [PMID: 16723262 DOI: 10.1016/j.anaerobe.2006.04.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2005] [Revised: 04/08/2006] [Accepted: 04/16/2006] [Indexed: 10/24/2022]
Abstract
We report a case of bacteremia caused by Solobacterium moorei, an anaerobic, non-sporulated Gram-positive bacillus in a patient with a multiple myeloma. The source of infection was presumably related to multiple dento-alveolar abscesses. This is the first recovery of S. moorei from blood cultures.
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Affiliation(s)
- G Detry
- Department of Microbiology, Catholic University of Louvain, Mont-Godinne University Hospital, Yvoir, Belgium
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24
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Van den Velde S, Lagrou K, Desmet K, Wauters G, Verhaegen J. Species identification of corynebacteria by cellular fatty acid analysis. Diagn Microbiol Infect Dis 2006; 54:99-104. [PMID: 16423489 DOI: 10.1016/j.diagmicrobio.2005.08.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2005] [Accepted: 08/30/2005] [Indexed: 11/19/2022]
Abstract
We evaluated the usefulness of cellular fatty acid analysis for the identification of corynebacteria. Therefore, 219 well-characterized strains belonging to 21 Corynebacterium species were analyzed with the Sherlock System of MIDI (Newark, DE). Most Corynebacterium species have a qualitative different fatty acid profile. Corynebacterium coyleae (subgroup 1), Corynebacterium riegelii, Corynebacterium simulans, and Corynebacterium imitans differ only quantitatively. Corynebacterium afermentans afermentans and C. coyleae (subgroup 2) have both a similar qualitative and quantitative profile. The commercially available database (CLIN 40, MIDI) identified only one third of the 219 strains correctly at the species level. We created a new database with these 219 strains. This new database was tested with 34 clinical isolates and could identify 29 strains correctly. Strains that remained unidentified were 2 Corynebacterium aurimucosum (not included in our database), 1 C. afermentans afermentans, and 2 Corynebacterium pseudodiphtheriticum. Cellular fatty acid analysis with a self-created database can be used for the identification and differentiation of corynebacteria.
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Affiliation(s)
- Sandra Van den Velde
- Laboratory Medicine, Department of Microbiology and Immunology, University Hospitals Leuven, BE-3000 Leuven, Belgium
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25
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Geysen D, Vandecasteele C, Jaspers M, Brouwers E, Wauters G. Effect of improving flue gas cleaning on characteristics and immobilisation of APC residues from MSW incineration. J Hazard Mater 2006; 128:27-38. [PMID: 16386367 DOI: 10.1016/j.jhazmat.2005.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The flue gas cleaning system of a MSW incinerator with a capacity of 350 kt/year was changed to improve the HCl elimination efficiency. Instead of the semi-wet operating spray reactor and subsequent baghouse, a two-step wet flue gas cleaning was added behind the baghouse. Elemental composition, X-ray powder diffraction patterns and TGA measurements showed that the resulting APC residue was totally different from the former residue. As a consequence, leaching characteristics of both residues also differed and another treatment was required prior to disposal. For the former residue, mainly leaching of Pb (>100 mg/l), necessitated treatment prior to landfilling. The lower alkalinity of the new residue resulted in a leachate pH of 9.7 and a Pb concentration of 0.8 mg/l. The leachate pH of the former residue was 12.4. The leaching of Pb and Zn increased above 100 mg/l when immobilising the new residue with cement. Better results were obtained when immobilising with micro silica. The high CaCl2 x 2H2O content of the new residue brought along clogging of the bag filter system. Adding 1.4% of CaO (or 1.9% of Ca(OH)2) to the residue already improved these inconveniences but again significantly changed the leaching behaviour of the residue.
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Affiliation(s)
- D Geysen
- Public Waste Agency of Flanders, OVAM, Stationsstraat 110, B-2800 Mechelen, Belgium.
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26
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Wauters G, Avesani V, Charlier J, Janssens M, Vaneechoutte M, Delmée M. Distribution of nocardia species in clinical samples and their routine rapid identification in the laboratory. J Clin Microbiol 2005; 43:2624-8. [PMID: 15956375 PMCID: PMC1151960 DOI: 10.1128/jcm.43.6.2624-2628.2005] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Eighty-six Nocardia strains isolated from clinical samples in Belgium were identified by 16S rRNA gene sequencing. Eighty-three (96%) strains belonged to only six Nocardia species: N. farcinica (38 [44%]), N. nova (19 [22%]), N. cyriacigeorgica (13 [15%]), N. brasiliensis (6 [6.9%]), N. abscessus (5 [5.8%]), and N. paucivorans (2 [2.3%]). A gallery of nine conventional and enzymatic tests was developed for the rapid identification of the most common species isolated during this survey. Pyrrolidonyl aminopeptidase, gamma-glutamyl aminopeptidase, alpha-mannosidase, and alpha-glucosidase were found to be highly discriminating and could be used to develop an identification scheme.
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Affiliation(s)
- Georges Wauters
- Microbiology Unit, University of Louvain, UCL/5490, Av. Hippocrate 54, B-1200 Brussels, Belgium.
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27
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Kotetishvili M, Kreger A, Wauters G, Morris JG, Sulakvelidze A, Stine OC. Multilocus sequence typing for studying genetic relationships among Yersinia species. J Clin Microbiol 2005; 43:2674-84. [PMID: 15956383 PMCID: PMC1151872 DOI: 10.1128/jcm.43.6.2674-2684.2005] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The intra- and interspecies genetic relationships of 58 strains representing all currently known species of the genus Yersinia were examined by multilocus sequence typing (MLST), using sequence data from 16S RNA, glnA, gyrB, recA, and Y-HSP60 loci. Yersinia aldovae, Y. bercovieri, Y. intermedia, Y. pestis, Y. pseudotuberculosis, Y. rohdei, and Y. ruckeri were genetically more homogeneous than were Y. enterocolitica, Y. frederiksenii, Y. kristensenii, and Y. mollaretii. The MLST data concerning the genetic relatedness within and among various species of Yersinia support the idea that Y. pestis and Y. pseudotuberculosis are two lineages within the same species rather than two distinct species. Y. ruckeri is the genetically most distant species within the genus. There was evidence of O-antigen switching and genetic recombination within and among various species of Yersinia. The genetic relatedness data obtained by MLST of the four housekeeping genes and 16S RNA agreed in most, but not all, instances. MLST was better suited for determining genetic relatedness among yersiniae than was 16S RNA analysis. Some strains of Y. frederiksenii and Y. kristensenii are genetically less related to other strains within those species, compared to strains of all other species within the genus. The taxonomic standing of these strains should be further examined because they may represent currently unrecognized Yersinia species.
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Affiliation(s)
- Mamuka Kotetishvili
- Department of Epidemiology and Preventive Medicine, University of Maryland School of Medicine, MSTF Bldg., 10 South Pine Street, Baltimore, MD 21201.
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Abstract
With a modification of Taylor's decarboxylation broth, histidine decarboxylase was detected in Enterobacter aerogenes, Morganella morganii, Raoultella ornithinolytica, and some strains of Citrobacter youngae and Raoultella planticola. This method provides a useful confirmatory test for identification of E. aerogenes strains.
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Affiliation(s)
- Georges Wauters
- University of Louvain, Faculty of Medicine, Microbiology Unit, UCL/5490, Av. Hippocrate 54, B-1200 Brussels, Belgium.
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Van Gerven T, Geysen D, Stoffels L, Jaspers M, Wauters G, Vandecasteele C. Management of incinerator residues in Flanders (Belgium) and in neighbouring countries. A comparison. Waste Manag 2005; 25:75-87. [PMID: 15681181 DOI: 10.1016/j.wasman.2004.09.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/13/2004] [Indexed: 05/24/2023]
Abstract
This paper covers the Flemish legislative tools concerning the management of bottom ash, fly ash and APC residue from municipal waste incinerators, with respect to their contamination with heavy metals. The situation in Flanders is compared to the one in the Walloon region, The Netherlands, Germany and France. Waste management in the countries considered differs on the level of available management options, of leaching tests and of limit values. To make an indicative comparison of leaching tests and limit values in the different countries, leaching tests were carried out on bottom ash and fly ash, and the results are compared to the relevant limit values for recycling and landfilling of the different countries. The comparison of legislations as well as the leaching results show that discrepancies in waste management between the different regions and countries exist. Recently, European limit values for landfilling became available. European legislation on recycling, however, has not been developed and urgently needs to be considered and drafted as the market for recycling can be expanding rapidly.
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Affiliation(s)
- T Van Gerven
- Department of Chemical Engineering, Katholieke Universiteit Leuven, de Croylaan 46, B-3001 Leuven, Belgium.
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Van Gerven T, Van Keer E, Arickx S, Jaspers M, Wauters G, Vandecasteele C. Carbonation of MSWI-bottom ash to decrease heavy metal leaching, in view of recycling. Waste Manag 2005; 25:291-300. [PMID: 15823744 DOI: 10.1016/j.wasman.2004.07.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/26/2004] [Indexed: 05/24/2023]
Abstract
The 0.1-2 mm fraction of a MSWI-bottom ash cannot be used as granular construction material because leaching of Cu exceeds Flemish limit values. In addition, leaching of Ba, Mo and Sb exceeds informal limit values. Leaching characteristics thus need to be improved. Carbonation was the chosen treatment method and this was performed by placing samples in a CO2 chamber. The CO2 percentage and the temperature of the chamber atmosphere, as well as the initial humidity of the samples, were varied to optimize carbonation parameters. Metal leaching was tested with the EN 12457 extraction test. Carbonation decreased Cu leaching from 3.3 to 1.0 mg/kg, but not yet to below the official limit value of 0.5 mg/kg. Leaching of Mo and Sb remained fairly constant or even increased after carbonation, but their limit values are only informal. Ba leaching decreased to below the informal limit value. Carbonation also caused Cr leaching to increase, in some cases to above the official limit value. Of the tested parameters, a CO2 percentage of 10% and a carbonation temperature of 50 degrees C in the atmosphere, together with ash humidity between 13% and 25% appeared to give the best leaching results. The main carbonation reactions took place within the first 24 h.
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Affiliation(s)
- T Van Gerven
- Department of Chemical Engineering, Katholieke Universiteit Leuven, De Croylaan 46, 3001 Leuven, Belgium.
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31
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Abstract
A 73-year-old man was hospitalized for dyspnea and bilateral ankle edema. During his hospital stay he presented anal hemorrhage and developed a high fever after colonoscopy. A set of aerobic and anaerobic blood culture bottles yielded a pure culture of gram-negative rods, susceptible to all antibiotics tested. The API20E code was 1005133, resulting in a very good identification as Pantoea sp. Subsequent sequencing of the 16S rRNA gene revealed a final identification as Pantoea ananatis. The patient was given intravenous and oral therapy with piperacillin-tazobactam and ofloxacin and recovered completely from his infection.
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Affiliation(s)
- Thierry De Baere
- Department of Clinical Chemistry, Microbiology & Immunology, Blok A, University Hospital, Ghent, Belgium. thierry.debaire.ugent.be
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32
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Wauters G, Haase G, Avesani V, Charlier J, Janssens M, Van Broeck J, Delmée M. Identification of a novel Brevibacterium species isolated from humans and description of Brevibacterium sanguinis sp. nov. J Clin Microbiol 2004; 42:2829-32. [PMID: 15184484 PMCID: PMC427857 DOI: 10.1128/jcm.42.6.2829-2832.2004] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Six coryneforms isolated from blood and dialysate fluid were phenotypically similar to Brevibacterium casei, but 16S rRNA gene sequencing and DNA-DNA hybridization indicate that they belong to a new species for which the name Brevibacterium sanguinis is proposed.
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Affiliation(s)
- Georges Wauters
- University of Louvain, Microbiology Unit, UCL/5490, Av. Hippocrate 54, B-1200 Brussels, Belgium.
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Geysen D, Vandecasteele C, Jaspers M, Wauters G. Comparison of immobilisation of air pollution control residues with cement and with silica. J Hazard Mater 2004; 107:131-143. [PMID: 15072821 DOI: 10.1016/j.jhazmat.2003.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2003] [Revised: 12/08/2003] [Accepted: 12/09/2003] [Indexed: 05/24/2023]
Abstract
Cement as agent for immobilising Pb from air pollution control residues is compared with the use of different silica-containing materials. The DIN 38414-S4 leaching test was used to control Pb leachability and to compare obtained Pb leachate concentrations with the landfill limit of 2 mg/l for Pb. Firstly, one scrubber residues was treated with cement and micro-silica. With cement, the Pb leachability could be reduced with a factor ranging from 3 to 50 depending on the type and amount of cement used and depending on the curing time. The landfill limit of 2 mg/l was, however, never attained. From all tested silica-containing additives, aerosil could reduce the initial Pb leaching (101.3mg/l) to below the detection limit at a dosage of 0.13 g aerosil/g residue. Second best and an economically preferable silica-containing additive was micro-silica: a reduction from 101.3 to 0.7 mg/l was observed at a dosage of 0.4 g micro-silica/g residue. The formation of Ca-silicates was found to be responsible for the decreased Pb leachability. To generalise the findings, the Pb leachability of five cement-treated and five micro-silica-treated air pollution control residues were compared. For three scrubber residues, 2-20 times lower Pb leachate concentrations were measured for micro-silica-treated samples (cured for 5 weeks) than cement-treated samples. For a fly ash and a boiler ash the difference was, respectively, 48 and 17 times. pH-dependent leaching tests showed that at pH=2.5, Pb leaching is 250 times lower for the micro-silica-treated residue than for the cement-treated residue and almost seven times lower at pH 12.4.
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Affiliation(s)
- D Geysen
- Department of Chemical Engineering, K.U. Leuven, de Croylaan 46, B-3001 Leuven, Belgium.
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Geysen D, Imbrechts K, Vandecasteele C, Jaspers M, Wauters G. Immobilization of lead and zinc in scrubber residues from MSW combustion using soluble phosphates. Waste Manag 2004; 24:471-481. [PMID: 15120431 DOI: 10.1016/j.wasman.2003.12.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/26/2003] [Indexed: 05/24/2023]
Abstract
The immobilization of MSWI-scrubber residues with soluble PO4(3-) was studied and compared to the immobilization using cement. The DIN 38414-S4 leaching protocol and pH dependent leaching were used to evaluate the leaching of Pb and Zn. Four different scrubber residues from MSW combustion (Pb concentration: 2.8-4.8 mg/g; Zn concentration: 3.0-12.3 mg/g) were mixed with water and cement or Na2HPO4 as source of soluble PO4(3-) at dosages of at least 0, 0.1, 0.2, 0.3 and 0.4 g per g residue. With cement as well as with PO4(3-) a reduction in Pb and Zn leaching was observed. With 0.4 g cement per g residue, the Pb leaching was reduced by a factor ranging from 70 to 100, but still exceeded the Pb landfill limit of 2 mg/l. With PO4(3-) the Pb leaching was reduced with a factor of 100-300 to below 2 mg/l. The Zn landfill limit (10 mg/l) was only exceeded by one untreated residue. Adding 0.2 g cement or 0.1 g PO4(3-) per g of that residue was enough to reduce leaching below 10 mg/l. However, when 0.6 g Na2HPO4 per g residue was added to a lime based scrubber residue, an increase in Zn leaching up to 12.5 mg/l was observed due to an increase in pH of up to 13.0. When using NaH2PO4 and H3PO4 no such increase in Zn leaching was observed. pH dependent leaching performed on one of the four residues showed that in the pH range of 2.5-6, Pb leaching was 100-50 times lower with Na2HPO4 treatment than with cement. In the pH range from 7-11, almost equal results were obtained for cement treated and Na2HPO4 treated residue. Above a pH of 12, Pb leaching was three times lower for the PO(4)(3-)-treated residue than for the cement treated residue. With soluble PO4(3-), Pb leaching below 2 mg/l could be attained at a dosage of 0.27 g PO4(3-)/g residue. With cement, Pb leaching was never below 2 mg/l.
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Affiliation(s)
- D Geysen
- Department of Chemical Engineering, KULeuven, de Croylaan 46, B-3001 Leuven, Belgium.
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35
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Wauters G, Avesani V, Laffineur K, Charlier J, Janssens M, Van Bosterhaut B, Delmée M. Brevibacterium lutescens sp. nov., from human and environmental samples. Int J Syst Evol Microbiol 2003; 53:1321-1325. [PMID: 13130013 DOI: 10.1099/ijs.0.02513-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Three strains of coryneform rods isolated from clinical samples and one of environmental origin exhibited phenotypic and chemotaxonomic properties characteristic of the genus Brevibacterium and their 16S rRNA gene sequences were closely related (98.5-99.0 %) to that of Brevibacterium otitidis. However, DNA-DNA hybridization of one strain (CF87(T)) showed only 59.6 % relatedness to the type strain of B. otitidis, DSM 10718(T), and 75-82 % relatedness to the three other strains. The four strains could be differentiated from B. otitidis by cellular fatty acid composition and some phenotypic characteristics. These findings suggest that the four strains belong to a novel species, for which the name Brevibacterium lutescens sp. nov. is proposed. The type strain of B. lutescens is CF87(T) (=DSM 15022(T)=CCUG 46604(T)).
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Affiliation(s)
- Georges Wauters
- University of Louvain, Faculty of Medicine, Microbiology Unit, B-1200 Brussels, Belgium
| | - Véronique Avesani
- University of Louvain, Faculty of Medicine, Microbiology Unit, B-1200 Brussels, Belgium
| | - Kim Laffineur
- University of Louvain, Faculty of Medicine, Microbiology Unit, B-1200 Brussels, Belgium
| | - Jacqueline Charlier
- University of Louvain, Faculty of Medicine, Microbiology Unit, B-1200 Brussels, Belgium
| | - Michèle Janssens
- University of Louvain, Faculty of Medicine, Microbiology Unit, B-1200 Brussels, Belgium
| | | | - Michel Delmée
- University of Louvain, Faculty of Medicine, Microbiology Unit, B-1200 Brussels, Belgium
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Laffineur K, Avesani V, Cornu G, Charlier J, Janssens M, Wauters G, Delmée M. Bacteremia due to a novel Microbacterium species in a patient with leukemia and description of Microbacterium paraoxydans sp. nov. J Clin Microbiol 2003; 41:2242-6. [PMID: 12734292 PMCID: PMC154712 DOI: 10.1128/jcm.41.5.2242-2246.2003] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A yellow-pigmented coryneform rod was isolated from the blood of a child with acute lymphoblastic leukemia who was perfused with a central venous catheter. The culture bottles were positive twice, at a 2-month interval. The isolate was identified as a Microbacterium sp. and studied along with five other similar strains. Phenotypic, chemotaxonomic, and genetic characteristics indicated that they are closely related to Microbacterium oxydans but that they belong to a distinct species, for which the name Microbacterium paraoxydans sp. nov. is proposed. The type strain of M. paraoxydans is CF36(T) = DSM 15019(T). The G+C content of its DNA is 69.9 mol%.
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Affiliation(s)
- Kim Laffineur
- Microbiology Unit, Faculty of Medicine, University of Louvain, B-1200 Brussels, Belgium
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Wauters G, De Baere T, Willems A, Falsen E, Vaneechoutte M. Description of Comamonas aquatica comb. nov. and Comamonas kerstersii sp. nov. for two subgroups of Comamonas terrigena and emended description of Comamonas terrigena. Int J Syst Evol Microbiol 2003; 53:859-862. [PMID: 12807213 DOI: 10.1099/ijs.0.02450-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Three clusters of isolates have previously been defined within the species Comamonas terrigena, on the basis of DNA-rRNA and DNA-DNA hybridization data, and of protein electrophoretic patterns and immunotyping. More detailed characterization in the current study shows that representatives of these three groups can also be differentiated phenotypically from each other. Strains of C. terrigena sensu stricto (C. terrigena DNA group 1) are pyrrolidone aminopeptidase-positive, do not grow at 40 degrees C, are L-alanine-positive and are always negative for 4-hydroxybenzoate. Strains of C. terrigena DNA groups 2 and 3 are pyrrolidone aminopeptidase-negative; the former is the only group that is tyrosine-negative, and only the latter can grow at 42 degrees C (with an optimal growth temperature of 40 degrees C). These findings are corroborated by differences in 16S rDNA sequence and tRNA intergenic spacer lengths. Therefore, it is proposed to rename C. terrigena DNA group 2 [containing former Aquaspirillum aquaticum and E. Falsen (EF) group 10 strains] as Comamonas aquatica sp. nov., and C. terrigena DNA group 3 (containing former EF group 10 strains) as Comamonas kerstersii sp. nov.
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Affiliation(s)
- Georges Wauters
- Medical Microbiology Unit, University of Louvain, Avenue Hippocrate 54, B-1200 Brussels, Belgium
| | - Thierry De Baere
- Department of Clinical Chemistry, Microbiology and Immunology, Blok A, Ghent University Hospital, De Pintelaan 185, B-9000 Ghent, Belgium
| | - Anne Willems
- Laboratorium voor Microbiologie, Fac. Wetenschappen, Vakgroep WE10V, Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Enevold Falsen
- Culture Collection of the University of Göteborg, Department of Clinical Bacteriology, Guldhedsgatan 10, 6tr, S-413 46 Göteborg, Sweden
| | - Mario Vaneechoutte
- Department of Clinical Chemistry, Microbiology and Immunology, Blok A, Ghent University Hospital, De Pintelaan 185, B-9000 Ghent, Belgium
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Abstract
We report a case of melioidosis in a previously healthy Belgian man. He presented with septicemia and prostatic abscesses 1 week after a trip to Vietnam. Burkholderia pseudomallei was isolated from multiple hemocultures. He was treated successfully with intravenous ceftazidime and trimethoprim-sulfamethoxazole, followed by a per-oral maintenance therapy of amoxicillin-clavulanate with supplementary amoxicillin. There was no need for surgical drainage. This is the second reported case of melioidosis in Belgium.
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Affiliation(s)
- A M Heyse
- Dept of Internal Medicine, AZ Maria Middelares St-Jozef, Kortrijkse steenweg 1026, B-9000 Ghent, Belgium.
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De Baere T, Wauters G, Kämpfer P, Labit C, Claeys G, Verschraegen G, Vaneechoutte M. Isolation of Buttiauxella gaviniae from a spinal cord patient with urinary bladder pathology. J Clin Microbiol 2002; 40:3867-70. [PMID: 12354904 PMCID: PMC130887 DOI: 10.1128/jcm.40.10.3867-3870.2002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A gram-negative Buttiauxella gaviniae-like organism (LBV449) was isolated from a urine sample of a patient suffering from urine bladder pathology and neurological problems. The isolate was positive for adonitol fermentation and L-arginine dihydrolase and negative for melibiose and L-ornithine decarboxylase. The API 20E code was 3004113. Retrospectively, another isolate (ENT107), from a leg wound, was recovered from our collections and was shown to have similar biochemical characteristics. DNA-DNA hybridization showed 77% similarity between both strains, and strain LBV449 revealed 74% DNA-DNA similarity to the type strain of B. gaviniae. Neither 16S rRNA gene sequencing nor fatty acid analysis were useful for identification. The characteristic tRNA-PCR patterns obtained for these two clinical isolates consisted of fragments with lengths of 102.2, 105.4, 116.6, and 136.9 bp and most resembled the tRNA-PCR pattern obtained for B. gaviniae, but they lacked the B. gaviniae fragments of 88.2 and 239.5 bp. To our knowledge, no clinical cases with Buttiauxella strains have been described thus far.
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Affiliation(s)
- Thierry De Baere
- Laboratory Bacteriology and Virology, Department of Microbiology, Blok A, Ghent University Hospital, De Pintelaan 185, B9000 Ghent, Belgium
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Abstract
A gram-negative alkaline phosphatase- and pyrrolidone peptidase-positive rod-shaped bacterium (CCUG 45702) was isolated from two aerobic blood cultures from a female cancer patient. No identification could be reached using phenotypic techniques. Amplification of the tRNA intergenic spacers revealed fragments with lengths of 116, 133, and 270 bp, but no such pattern was present in our reference library. Sequencing of the 16S rRNA gene revealed its identity as Moraxella atlantae, a species isolated only rarely and published only once as causing infection. In retrospect, the phenotypic characteristics fit the identification as M. atlantae (formerly known as CDC group M-3). Comparative 16S rRNA sequence analysis indicates that M. atlantae, M. lincolnii, and M. osloensis might constitute three separate genera within the MORAXELLACEAE: After treatment with amoxicillin-clavulanic acid for 2 days, fever subsided and the patient was dismissed.
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Affiliation(s)
- Thierry De Baere
- Department of Microbiology, Ghent University Hospital, Ghent, Belgium. Thierry.De
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41
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Van Bosterhaut B, Boucquey P, Janssens M, Wauters G, Delmée M. Chronic osteomyelitis due to Actinomyces neuii subspecies neuii and Dermabacter hominis. Eur J Clin Microbiol Infect Dis 2002; 21:486-7. [PMID: 12111611 DOI: 10.1007/s10096-002-0747-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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42
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Laffineur K, Janssens M, Charlier J, Avesani V, Wauters G, Delmée M. Biochemical and susceptibility tests useful for identification of nonfermenting gram-negative rods. J Clin Microbiol 2002; 40:1085-7. [PMID: 11880447 PMCID: PMC120239 DOI: 10.1128/jcm.40.3.1085-1087.2002] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Six hundred nineteen strains of nonfermenting gram-negative rods were tested for alkaline phosphatase, benzyl-arginine arylamidase, pyrrolidonyl arylamidase, ethylene glycol acidification, and susceptibility to desferrioxamine and colistin. The results were highly discriminant. Therefore, the proposed tests may be helpful for the identification of this group of organisms.
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Affiliation(s)
- Kim Laffineur
- Microbiology Unit, Faculty of Medicine, University of Louvain, B-1200 Brussels, Belgium
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43
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Wauters G, Claeys G, Verschraegen G, De Baere T, Vandecruys E, Van Simaey L, De Ganck C, Vaneechoutte M. Case of catheter sepsis with Ralstonia gilardii in a child with acute lymphoblastic leukemia. J Clin Microbiol 2001; 39:4583-4. [PMID: 11724891 PMCID: PMC88595 DOI: 10.1128/jcm.39.12.4583-4584.2001] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Acute lymphoblastic leukemia was diagnosed in a 7-year-old girl. Two months after insertion of a central venous catheter, she developed fever and complained of headache and abdominal pain. Physical examination revealed no focus of infection. A gram-negative nonfermenting bacillus was recurrently cultured from blood. Extensive biochemical testing and 16S ribosomal DNA sequencing led to the identification of Ralstonia gilardii.
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Affiliation(s)
- G Wauters
- Unité de Microbiologie, Faculté de Médecine, Université Catholique de Louvain, 1200 Brussels, Belgium
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Vaneechoutte M, De Baere T, Wauters G, Steyaert S, Claeys G, Vogelaers D, Verschraegen G. One case each of recurrent meningitis and hemoperitoneum infection with Ralstonia mannitolilytica. J Clin Microbiol 2001; 39:4588-90. [PMID: 11724893 PMCID: PMC88597 DOI: 10.1128/jcm.39.12.4588-4590.2001] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Two clinical cases of infection with Ralstonia mannitolilytica are described: a recurrent meningitis on an implanted intraventricular catheter and an infected hemoperitoneum as a complication of a cholangiocarcinoma. The strains were first misidentified as Pseudomonas fluorescens and Burkholderia cepacia. Further testing lead to the identification as Ralstonia pickettii biovar 3/"thomasii," which was recently shown to represent a separate species, R. mannitolilytica (List editor N. Weiss, Int. J. Syst. Evol. Microbiol. 51:795-796, 2001), originally described as R. mannitolytica (De Baere et al., Int. J. Syst. Evol. Microbiol. 51:547-558, 2001). R. mannitolilytica can be distinguished from all described Ralstonia species by its acidification of D-arabitol and mannitol and by its lack of nitrate reduction and of alkalinization of tartrate. In order to determine the true prevalence of infections with this species, colistin-resistant "P. fluorescens" strains and strains growing on B. cepacia selective medium deserve further attention.
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Affiliation(s)
- M Vaneechoutte
- Department of Chemistry, Microbiology and Immunology, Ghent University Hospital, Ghent, Belgium.
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45
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Abstract
Seven isolates from various human body sites displayed general chemotaxonomic and phenotypic characteristics of the genus Brevibacterium. This was corroborated by the 16S rRNA gene sequence analysis of strain CF62T, showing a sequence similarity of 99% to Brevibacterium mcbrellneri. However, DNA-DNA hybridization, a peculiar amino acid content of the cell wall and some phenotypic properties clearly suggested that these strains belong to a new species, for which the name Brevibacterium paucivorans sp. nov. is proposed. The type strain of B. paucivorans is CF62T (= DSM 13657T = LMG 19814T). The DNA G+C content of the type strain is 55.8 mol%.
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de Baere T, Wauters G, Huylenbroeck A, Claeys G, Peleman R, Verschraegen G, Allemeersch D, Vaneechoutte M. Isolations of Leclercia adecarboxylata from a patient with a chronically inflamed gallbladder and from a patient with sepsis without focus. J Clin Microbiol 2001; 39:1674-5. [PMID: 11283116 PMCID: PMC87999 DOI: 10.1128/jcm.39.4.1674-1675.2001] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Leclercia adecarboxylata was isolated from a patient with a chronically inflamed gallbladder, together with Enterococcus sp. The organism was considered clinically significant and was susceptible to all antibiotics tested. Another strain of L. adecarboxylata was cultured from blood, together with Escherichia hermannii and E. faecalis, from a patient with sepsis.
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Affiliation(s)
- T de Baere
- Department of Clinical Chemistry, Microbiology, and Immunology, Ghent University Hospital, Ghent, Belgium
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De Baere T, Steyaert S, Wauters G, Des Vos P, Goris J, Coenye T, Suyama T, Verschraegen G, Vaneechoutte M. Classification of Ralstonia pickettii biovar 3/'thomasii' strains (Pickett 1994) and of new isolates related to nosocomial recurrent meningitis as Ralstonia mannitolytica sp. nov. Int J Syst Evol Microbiol 2001; 51:547-558. [PMID: 11321101 DOI: 10.1099/00207713-51-2-547] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Strains isolated independently from two patients could be recognized as Ralstonia pickettii biovar 3/'thomasii'. The 16S rDNA sequences of these strains and two other strains of R. pickettii biovar 3/'thomasii' clustered at less than 98% similarity versus all other described Ralstonia species and at less than 97 % versus the two other R. pickettii biovars. The separate species status of R. pickettii biovar 3/'thomasii' was confirmed by DNA-DNA hybridization, indicating less than 60% DNA homology with the R. pickettii biovars Va-1 and Va-2 and with two as-yet unclassified but biochemically similar Ralstonia strains. Phenotypically, this Ralstonia species can be distinguished from all described Ralstonia species by its acidification of D-arabitol and mannitol and by its lack of nitrate reduction and of alkalinization of tartrate and from two as-yet unclassified Ralstonia strains only by its lack of nitrate reduction. The name Ralstonia mannitolytica sp. nov. is proposed, reflecting the characteristic acidification of mannitol. Resistance to desferrioxamine is another difference from R. pickettii and Ralstonia solanacearum. Although several nosocomial outbreaks have been associated with R. mannitolytica, life-threatening infections have not yet been reported, possibly due to misidentification as Pseudomonas fluorescens or Burkholderia cepacia. In at least one of the two cases reported here, the R. mannitolytica isolate was found to be clinically relevant, causing recurrent nosocomial meningitis, with an infected implanted catheter as the source. The type strain of R. mannitolytica is NCIMB 10805T (= LMG 6866T), which was isolated during the first described outbreak as 'Pseudomonas thomasii' at St Thomas' Hospital, London, UK, in 1971.
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Wauters G, Van Bosterhaut B, Avesani V, Cuvelier R, Charlier J, Janssens M, Delmée M. Peritonitis due to Brevibacterium otitidis in a patient undergoing continuous ambulatory peritoneal dialysis. J Clin Microbiol 2000; 38:4292-3. [PMID: 11060116 PMCID: PMC87589 DOI: 10.1128/jcm.38.11.4292-4293.2000] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Brevibacterium otitidis is a coryneform rod and, as far as is known, is isolated only from infected ears. We report the first known case of peritonitis caused by B. otitidis in a patient undergoing continuous ambulatory peritoneal dialysis.
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Affiliation(s)
- G Wauters
- Microbiology Unit, Faculty of Medicine, University of Louvain, B-1200 Brussels, Belgium
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Wauters G, Charlier J, Janssens M, Delmée M. Identification of Arthrobacter oxydans, Arthrobacter luteolus sp. nov., and Arthrobacter albus sp. nov., isolated from human clinical specimens. J Clin Microbiol 2000; 38:2412-5. [PMID: 10835019 PMCID: PMC86826 DOI: 10.1128/jcm.38.6.2412-2415.2000] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Five Arthrobacter isolates from clinical specimens were studied by phenotypic, chemotaxonomic, and genetic characterization. Two strains had characteristics consistent with those of Arthrobacter oxydans. One strain was related to A. citreus; however, DNA-DNA hybridization and phenotypic characteristics indicated that this strain belongs to a new species, for which the name Arthrobacter luteolus sp. nov. is proposed. Two strains were closely related to A. cumminsii by 16S rRNA gene sequencing, but DNA-DNA hybridization, peptidoglycan type, and some phenotypic features indicated that they should be assigned to a new species, for which the name Arthrobacter albus sp. nov. is proposed. The type strain of A. luteolus is CF25 (DSM 13067). The type strain of A. albus is CF43 (DSM 13068).
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Affiliation(s)
- G Wauters
- Faculty of Medicine, Microbiology Unit, University of Louvain, B-1200 Brussels, Belgium.
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Vandercam B, Gérain J, Humblet Y, Ferrant A, Wauters G, Moreau M, Longueville J, Symann M, Straetmans N. Meropenem versus ceftazidime as empirical monotherapy for febrile neutropenic cancer patients. Ann Hematol 2000; 79:152-7. [PMID: 10803938 DOI: 10.1007/s002770050571] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A total of 101 cancer patients with 121 febrile neutropenia episodes were randomised to receive empirical treatment with i.v. meropenem (1g/8 h) or ceftazidime (2 g/8 h). After 3 days, 89% of patients were on unmodified therapy in the meropenem group, compared with 83% in the ceftazidime group. Of the evaluable episodes (n = 106), the success rate with unmodified empirical therapy until the end of the treatment course was slightly higher with meropenem than with ceftazidime (48% vs 38%, P=0.39). Furthermore, initial success with further infections was observed in 22% of episodes treated with meropenem and in 13% of episodes treated with ceftazidime. Glycopeptides were used as first modification in 28% and 39% of meropenem and ceftazidime recipients, respectively. Both treatments were well tolerated and there were no reports of drug-related nausea/vomiting or seizures. No significant differences in response rate or in tolerability were observed when analysing only the first febrile episodes. In conclusion, meropenem seems to be as efficacious and well tolerated as ceftazidime and may be associated with a lesser requirement for the addition of glycopeptides.
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Affiliation(s)
- B Vandercam
- Division of General Internal Medicine, St-Luc University Hospital, Brussels, Belgium
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