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Stas M, Aerts R, Hendrickx M, Delcloo A, Dendoncker N, Dujardin S, Linard C, Nawrot T, Van Nieuwenhuyse A, Aerts JM, Van Orshoven J, Somers B. Exposure to green space and pollen allergy symptom severity: A case-crossover study in Belgium. Sci Total Environ 2021; 781:146682. [PMID: 33812114 DOI: 10.1016/j.scitotenv.2021.146682] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/04/2021] [Accepted: 03/18/2021] [Indexed: 05/17/2023]
Abstract
BACKGROUND The prevalence of pollen allergy has increased due to urbanization, climate change and air pollution. The effects of green space and air pollution on respiratory health of pollen allergy patients are complex and best studied in spatio-temporal detail. METHODS We tracked 144 adults sensitized to Betulaceae pollen during the tree pollen season (January-May) of 2017 and 2018 and assessed their spatio-temporal exposure to green space, allergenic trees, air pollutants and birch pollen. Participants reported daily symptom severity scores. We extracted 404 case days with high symptom severity scores and matched these to 404 control days. The data were analyzed using conditional logistic regression with a 1:1 case-crossover design. RESULTS Case days were associated with exposure to birch pollen concentration (100 grains/m3) [adjusted odds ratio 1.045 and 95% confidence interval (1.014-1.078)], O3 concentration (10 μg/m3) [1.504 (1.281-1.766)] and PM10 concentration (10 μg/m3) [1.255 (1.007-1.565)] on the day of the severe allergy event and with the cumulative exposure of one and two days before. Exposure to grass cover (10% area fraction) [0.655 (0.446-0.960)], forest cover (10% area fraction) [0.543 (0.303-0.973)] and density of Alnus (10%) [0.622 (0.411-0.942)] were protective for severe allergy, but only on the day of the severe allergy event. Increased densities of Betula trees (10%) were a risk factor [unadjusted OR: 2.014 (1.162-3.490)]. CONCLUSION Exposure to green space may mitigate tree pollen allergy symptom severity but only when the density of allergenic trees is low. Air pollutants contribute to more severe allergy symptoms. Spatio-temporal tracking allows for a more realistic exposure assessment.
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Affiliation(s)
- Michiel Stas
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E-2411, BE-3001 Leuven, Belgium; Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), KU Leuven, Kasteelpark Arenberg 30-2472, B-3001 Leuven, Belgium.
| | - Raf Aerts
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E-2411, BE-3001 Leuven, Belgium; Risk and Health Impact Assessment, Sciensano (Belgian Institute of Health), J. Wytsmanstraat 14, B-1050 Brussels, Belgium; Division Ecology, Evolution and Biodiversity Conservation, KU Leuven, Kasteelpark Arenberg 31-3245, BE-3001 Leuven, Belgium; Center for Environmental Sciences, Hasselt University, Campus Diepenbeek, Agoralaan Gebouw D, B-3590 Hasselt, Belgium; Mycology and Aerobiology, Sciensano (Belgian Institute of Health), J. Wytsmanstraat 14, B-1050 Brussels, Belgium.
| | - Marijke Hendrickx
- Mycology and Aerobiology, Sciensano (Belgian Institute of Health), J. Wytsmanstraat 14, B-1050 Brussels, Belgium.
| | - Andy Delcloo
- Royal Meteorological Institute of Belgium, Ringlaan 3 Avenue Circulaire, B-1180 Brussels, Belgium; Department of Physics and Astronomy, Ghent University, Proeftuinstraat 86, B-9000 Ghent, Belgium.
| | - Nicolas Dendoncker
- Department of Geography, University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium; Institute for Life, Earth and Environment (ILEE), University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium.
| | - Sebastien Dujardin
- Department of Geography, University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium; Institute for Life, Earth and Environment (ILEE), University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium.
| | - Catherine Linard
- Department of Geography, University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium; Institute for Life, Earth and Environment (ILEE), University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium.
| | - Tim Nawrot
- Center for Environmental Sciences, Hasselt University, Campus Diepenbeek, Agoralaan Gebouw D, B-3590 Hasselt, Belgium; Centre Environment and Health, Department of Public Health and Primary Care, KU Leuven, Kapucijnenvoer 35 blok d box 7001, B-3000 Leuven, Belgium.
| | - An Van Nieuwenhuyse
- Centre Environment and Health, Department of Public Health and Primary Care, KU Leuven, Kapucijnenvoer 35 blok d box 7001, B-3000 Leuven, Belgium; Department of Health Protection, Laboratoire national de santé (LNS), 1, Rue Louis Rech, L-3555 Dudelange, Luxembourg.
| | - Jean-Marie Aerts
- Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), KU Leuven, Kasteelpark Arenberg 30-2472, B-3001 Leuven, Belgium.
| | - Jos Van Orshoven
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E-2411, BE-3001 Leuven, Belgium.
| | - Ben Somers
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E-2411, BE-3001 Leuven, Belgium.
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Imbert S, Cassaing S, Bonnal C, Normand AC, Gabriel F, Costa D, Blaize M, Lachaud L, Hasseine L, Kristensen L, Guitard J, Schuttler C, Raberin H, Brun S, Hendrickx M, Piarroux R, Fekkar A. Invasive aspergillosis due to Aspergillus cryptic species: A prospective multicentre study. Mycoses 2021; 64:1346-1353. [PMID: 34181773 DOI: 10.1111/myc.13348] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 04/10/2021] [Revised: 06/25/2021] [Accepted: 06/25/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVES Aspergillus cryptic species are increasingly recognised causes of Aspergillus diseases, including life-threatening invasive aspergillosis (IA). However, as their accurate identification remains challenging in a routine practice, few is known from a clinical and epidemiological perspective. Recently, the MSI application has emerged as a powerful tool for the detection and identification of Aspergillus cryptic species. We aimed to use to the network of users of the MSI application to conduct a multicentre prospective screening of Aspergillus cryptic species-related IA and analyse their epidemiological, clinical and mycological characteristics. METHODS Over a 27-month period, the clinical involvement of 369 Aspergillus cryptic isolates, from 13 French and Danish MSI application users, was prospectively analysed. Species identification was confirmed by DNA-sequencing and antifungal susceptibility testing was performed using EUCAST reference method. Fifty-one A fumigatus sensu stricto invasive cases were also analysed. RESULTS Fifteen cryptic isolates were responsible of IA. Eight species were involved, including 5 cases related to the species A sublatus. These species showed high rate of in vitro low susceptibility to antifungal drugs. In comparison with A fumigatus sensu stricto invasive cases, pre-exposure to azole drugs was significantly associated with cryptic IA (P = .02). DISCUSSION This study brings new insights in cryptic species related IA and underlines the importance to identify accurately at the species level these Aspergillus isolates. The increasing use of antifungal drugs might lead in the future to an epidemiologic shift with an emergence of resistant isolates involved in IA.
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Affiliation(s)
- Sebastien Imbert
- Service de Parasitologie Mycologie, AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Paris, France.,Centre d'Immunologie et des Maladies Infectieuses, Sorbonne Université, INSERM, CNRS, Paris, France
| | - Sophie Cassaing
- Service de Parasitologie Mycologie, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Christine Bonnal
- Service de Parasitologie Mycologie, AP-HP, Hôpital Bichat-Claude Bernard, Paris, France
| | - Anne-Cecile Normand
- Service de Parasitologie Mycologie, AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Paris, France
| | - Frederic Gabriel
- Service de Parasitologie Mycologie, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Damien Costa
- Service de Parasitologie Mycologie, Centre Hospitalier Universitaire de Rouen, Rouen, France
| | - Marion Blaize
- Service de Parasitologie Mycologie, AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Paris, France.,Centre d'Immunologie et des Maladies Infectieuses, Sorbonne Université, INSERM, CNRS, Paris, France
| | - Laurence Lachaud
- Service de Parasitologie Mycologie, Centre Hospitalier Universitaire de Montpellier, Montpellier, France
| | - Lilia Hasseine
- Service de Parasitologie Mycologie, Centre Hospitalier Universitaire de Nice, Nice, France
| | - Lise Kristensen
- Department of Clinical Microbiology, Aarhus University Hospital, Aarhus N, Denmark
| | - Juliette Guitard
- Service de Parasitologie Mycologie, AP-HP, Hôpital Saint-Antoine, Paris, France
| | | | - Helene Raberin
- Service de Parasitologie Mycologie, Centre Hospitalier Universitaire de Saint Etienne, Saint Etienne, France
| | - Sophie Brun
- Service de Parasitologie Mycologie, AP-HP, Hôpital Avicenne, Bobigny, France
| | - Marijke Hendrickx
- Service of Mycology and Aerobiology, BCCM/IHEM Fungal Collection, Scientific Institute of Public Health, Brussels, Belgium
| | - Renaud Piarroux
- Service de Parasitologie Mycologie, AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Paris, France.,Sorbonne Université, INSERM, Institut Pierre Louis d'Epidemiologie et de Santé Publique, Paris, France
| | - Arnaud Fekkar
- Service de Parasitologie Mycologie, AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Paris, France.,Centre d'Immunologie et des Maladies Infectieuses, Sorbonne Université, INSERM, CNRS, Paris, France
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3
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Hendrickx M, Woodward A, Fuhr DC, Sondorp E, Roberts B. The burden of mental disorders and access to mental health and psychosocial support services in Syria and among Syrian refugees in neighboring countries: a systematic review. J Public Health (Oxf) 2021; 42:e299-e310. [PMID: 31686110 DOI: 10.1093/pubmed/fdz097] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [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: 04/10/2019] [Revised: 07/16/2019] [Accepted: 07/21/2019] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Exposure to conflict, violence and forced displacement can increase poor mental health among affected populations. Our aim was to examine evidence on the burden of mental disorders and access to and effectiveness of mental health and psychosocial support (MHPSS) services in Syria and among Syrian refugees in neighboring countries. METHODS A systematic review was done following systematic review criteria. Twelve bibliographic databases and additional gray literature sources were searched for quantitative and qualitative studies. Descriptive analysis and quality assessment were conducted. RESULTS Twenty-eight eligible studies were identified, of which two were with conflict-affected populations within Syria. Levels of post-traumatic stress disorder ranged from 16 to 84%, depression from 11 to 49%, and anxiety disorder from 49 to 55%. Common risk factors were exposures to trauma and having a personal or family history of mental disorder. Financial and socio-cultural barriers were identified as the main obstacles to accessing MHPSS care. Evaluations of MHPSS services, albeit from predominantly nonrandomised designs, reported positive treatment outcomes. CONCLUSIONS The MHPSS burden was high, but with considerable variation between studies. There are key evidence gaps on: MHPSS burden and interventions-particularly for those living within Syria; access and barriers to care; and implementation and evaluation of MHPSS interventions.
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Affiliation(s)
- M Hendrickx
- London School of Hygiene & Tropical Medicine, London, UK
| | - A Woodward
- KIT Health, KIT Royal Tropical Institute, Amsterdam, The Netherlands
| | - D C Fuhr
- Department of Health Services Research and Policy, Faculty of Public Health and Policy, London School of Hygiene & Tropical Medicine, London, UK
| | - E Sondorp
- KIT Health, KIT Royal Tropical Institute, Amsterdam, The Netherlands
| | - B Roberts
- Department of Health Services Research and Policy, Faculty of Public Health and Policy, London School of Hygiene & Tropical Medicine, London, UK
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4
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Normand AC, Gabriel F, Riat A, Cassagne C, Bourgeois N, Huguenin A, Chauvin P, De Geyter D, Bexkens M, Rubio E, Hendrickx M, Ranque S, Piarroux R. Optimization of MALDI-ToF mass spectrometry for yeast identification: a multicenter study. Med Mycol 2021; 58:639-649. [PMID: 31579924 DOI: 10.1093/mmy/myz098] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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: 06/17/2019] [Revised: 08/21/2019] [Accepted: 09/16/2019] [Indexed: 11/13/2022] Open
Abstract
Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-ToF MS) is routinely used in mycology laboratories to rapidly identify pathogenic yeasts. Various methods have been proposed to perform routine MS-based identification of clinically relevant species. In this study, we focused on Bruker technology and assessed the identification performance of three protocols: two pretreatment methods (rapid formic acid extraction directly performed on targets and full extraction using formic acid/acetonitrile in tubes) and a direct deposit protocol that omits the extraction step. We also examined identification performance using three target types (ground-steel, polished-steel, and biotargets) and two databases (Bruker and online MSI [biological-mass-spectrometry-identification application]) in a multicenter manner. Ten European centers participated in the study, in which a total of 1511 yeast isolates were analyzed. The 10 centers prospectively performed the three protocols on approximately 150 yeast isolates each, and the corresponding spectra were then assessed against two reference spectra databases (MSI and Bruker), with appropriate thresholds. Three centers evaluated the impact of the targets. Scores were compared between the various combinations, and identification accuracy was assessed. The protocol omitting the extraction step was inappropriate for yeast identification, while the full extraction method yielded far better results. Rapid formic acid extraction yielded variable results depending on the target, database and threshold. Selecting the optimal extraction method in combination with the appropriate target, database and threshold may enable simple and accurate identification of clinically relevant yeast samples. Concerning the widely used polished-steel targets, the full extraction method still ensured better scores and better identification rates.
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Affiliation(s)
- Anne-Cécile Normand
- Laboratoire de Parasitologie-Mycologie, de Parasitologie-Mycologie Hôpital Pitié Salpêtrière, 75013 Paris, France
| | - Frédéric Gabriel
- Mycologie, CHU de Bordeaux, Groupe Hospitalier Pellegrin, place Amélie Raba-Léon, 33000 Bordeaux, France
| | - Arnaud Riat
- Bacteriology Laboratory, Service of Laboratory Medicine, Department of Genetics, Laboratory Medicine and Pathology, Geneva University Hospitals, 4 rue Gabrielle-Perret-Gentil, 1205 Geneva, Switzerland
| | - Carole Cassagne
- Aix Marseille University, IRD, AP-HM, SSA, VITROME, IHU Méditerranée Infection, 13006 Marseille, France
| | | | - Antoine Huguenin
- EA 7510, ESCAPE, Laboratoire de Parasitologie-Mycologie, Université de Reims Champagne-Ardenne, 51100 Reims, France.,Laboratoire de Parasitologie Mycologie, CHU de Reims Hôpital Maison Blanche, 51100 Reims, France
| | - Pamela Chauvin
- Service de Parasitologie-Mycologie, Hôpital Purpan, 31059 Toulouse, France
| | - Deborah De Geyter
- Department Microbiology and Infection Prevention, Universitair Ziekenhuis Brussel (UZ Brussel), Vrije Universiteit Brussel (VUB), Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Michiel Bexkens
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC, 's-Gravendijkwal 230, 3015 CE Rotterdam, The Netherlands
| | - Elisa Rubio
- Department of Clinical Microbiology, Hospital Clinic, 08036 Barcelona, Spain
| | - Marijke Hendrickx
- Sciensano, BCCM/IHEM collection, Mycology and Aerobiology Unit, 1050 Brussels, Belgium
| | - Stéphane Ranque
- Bacteriology Laboratory, Service of Laboratory Medicine, Department of Genetics, Laboratory Medicine and Pathology, Geneva University Hospitals, 4 rue Gabrielle-Perret-Gentil, 1205 Geneva, Switzerland
| | - Renaud Piarroux
- Laboratoire de Parasitologie-Mycologie, de Parasitologie-Mycologie Hôpital Pitié Salpêtrière, 75013 Paris, France.,Sorbonne Université, INSERM, Institut Pierre-Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié-Salpêtrière, F-75013 Paris, France
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5
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Haccuria A, Van Muylem A, Malinovschi A, Rasschaert J, Virreira M, Bruffaerts N, Hendrickx M, Michils A. Increased expression of IL-33 is found in the lower airways of patients with seasonal allergic rhinitis and is not related to natural allergen exposure. Clin Exp Allergy 2021; 51:845-848. [PMID: 33394501 DOI: 10.1111/cea.13819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 11/22/2020] [Accepted: 12/27/2020] [Indexed: 12/21/2022]
Affiliation(s)
- Amaryllis Haccuria
- Chest Department, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Alain Van Muylem
- Chest Department, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Andreï Malinovschi
- Department of Medical Sciences: Clinical Physiology, Uppsala University, Uppsala, Sweden
| | - Joanne Rasschaert
- Laboratoire de Biochimie Métabolique et Osseuse, Université Libre de Bruxelles, Brussels, Belgium
| | - Myrna Virreira
- Laboratoire de Biochimie Métabolique et Osseuse, Université Libre de Bruxelles, Brussels, Belgium
| | | | | | - Alain Michils
- Chest Department, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
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6
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Imbert S, Normand AC, Cassaing S, Gabriel F, Kristensen L, Bonnal C, Lachaud L, Costa D, Guitard J, Hasseine L, Palous M, Piarroux M, Hendrickx M, Piarroux R, Fekkar A. Multicentric Analysis of the Species Distribution and Antifungal Susceptibility of Cryptic Isolates from Aspergillus Section Fumigati. Antimicrob Agents Chemother 2020; 64:e01374-20. [PMID: 32900686 PMCID: PMC7674026 DOI: 10.1128/aac.01374-20] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/03/2020] [Indexed: 12/19/2022] Open
Abstract
The antifungal susceptibility of Aspergillus cryptic species is poorly known. We assessed 51 isolates, belonging to seven Fumigati cryptic species, by the EUCAST reference method and the concentration gradient strip (CGS) method. Species-specific patterns were observed, with high MICs for azole drugs, except for Aspergillus hiratsukae and Aspergillus tsurutae, and high MICs for amphotericin B for Aspergillus lentulus and Aspergillus udagawae Essential and categorical agreements between EUCAST and CGS results were between 53.3 and 93.3%.
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Affiliation(s)
- S Imbert
- AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Service de Parasitologie-Mycologie, Paris, France
- Sorbonne Université, INSERM, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Paris, France
| | - A C Normand
- AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Service de Parasitologie-Mycologie, Paris, France
| | - S Cassaing
- Centre Hospitalier Universitaire de Toulouse, Service de Parasitologie-Mycologie, Toulouse, France
| | - F Gabriel
- Centre Hospitalier Universitaire de Bordeaux, Service de Parasitologie-Mycologie, Bordeaux, France
| | - L Kristensen
- Aarhus University Hospital, Department of Clinical Microbiology, Aarhus, Denmark
| | - C Bonnal
- AP-HP, Hôpital Bichat-Claude Bernard, Service de Parasitologie-Mycologie, Paris, France
| | - L Lachaud
- Centre Hospitalier Universitaire de Montpellier, Service de Parasitologie-Mycologie, Montpellier, France
| | - D Costa
- Centre Hospitalier Universitaire de Rouen, Service de Parasitologie-Mycologie, Rouen, France
| | - J Guitard
- AP-HP, Hôpital Saint-Antoine, Service de Parasitologie-Mycologie, Paris, France
| | - L Hasseine
- Centre Hospitalier Universitaire de Nice, Service de Parasitologie-Mycologie, Nice, France
| | - M Palous
- AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Service de Parasitologie-Mycologie, Paris, France
| | - M Piarroux
- AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Service de Parasitologie-Mycologie, Paris, France
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidemiologie et de Santé Publique, Paris, France
| | - M Hendrickx
- Service of Mycology and Aerobiology, BCCM/IHEM Fungal Collection, Scientific Institute of Public Health, Brussels, Belgium
| | - R Piarroux
- AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Service de Parasitologie-Mycologie, Paris, France
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidemiologie et de Santé Publique, Paris, France
| | - A Fekkar
- AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Service de Parasitologie-Mycologie, Paris, France
- Sorbonne Université, INSERM, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Paris, France
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Deckers M, Vanneste K, Winand R, Hendrickx M, Becker P, De Keersmaecker SC, Deforce D, Marie-Alice F, Roosens NH. Screening strategy targeting the presence of food enzyme-producing fungi in food enzyme preparations. Food Control 2020. [DOI: 10.1016/j.foodcont.2020.107295] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Aerts R, Dujardin S, Nemery B, Van Nieuwenhuyse A, Van Orshoven J, Aerts JM, Somers B, Hendrickx M, Bruffaerts N, Bauwelinck M, Casas L, Demoury C, Plusquin M, Nawrot TS. Residential green space and medication sales for childhood asthma: A longitudinal ecological study in Belgium. Environ Res 2020; 189:109914. [PMID: 32980008 DOI: 10.1016/j.envres.2020.109914] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/03/2020] [Accepted: 07/03/2020] [Indexed: 05/03/2023]
Abstract
BACKGROUND Living in green environments has been associated with various health benefits, but the evidence for positive effects on respiratory health in children is ambiguous. OBJECTIVE To investigate if residential exposure to different types of green space is associated with childhood asthma prevalence in Belgium. METHODS Asthma prevalence was estimated from sales data of reimbursed medication for obstructive airway disease (OAD) prescribed to children between 2010 and 2014, aggregated at census tract level (n = 1872) by sex and age group (6-12 and 13-18 years). Generalized log-linear mixed effects models with repeated measures were used to estimate effects of relative covers of forest, grassland and garden in the census tract of the residence on OAD medication sales. Models were adjusted for air pollution (PM10), housing quality and administrative region. RESULTS Consistent associations between OAD medication sales and relative covers of grassland and garden were observed (unadjusted parameter estimates per IQR increase of relative cover, range across four strata: grassland, β = 0.15-0.17; garden, β = 0.13-0.17). The associations remained significant after adjusting for housing quality and chronic air pollution (adjusted parameter estimates per IQR increase of relative cover, range across four strata: grassland, β = 0.10-0.14; garden, β = 0.07-0.09). There was no association between OAD medication sales and forest cover. CONCLUSIONS Based on aggregated data, we found that living in close proximity to areas with high grass cover (grasslands, but also residential gardens) may negatively impact child respiratory health. Potential allergic and non-allergic mechanisms that underlie this association include elevated exposure to grass pollen and fungi and reduced exposure to environmental biodiversity. Reducing the dominance of grass in public and private green space might be beneficial to reduce the childhood asthma burden and may simultaneously improve the ecological value of urban green space.
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Affiliation(s)
- Raf Aerts
- Risk and Health Impact Assessment, Sciensano (Belgian Institute of Health), Juliette Wytsmanstraat 14, BE-1050, Brussels, Belgium; Division Ecology, Evolution and Biodiversity Conservation, University of Leuven (KU Leuven), Kasteelpark Arenberg 31-2435, BE-3001, Leuven, Belgium; Division Forest, Nature and Landscape, University of Leuven (KU Leuven), Celestijnenlaan 200E-2411, BE-3001, Leuven, Belgium; Center for Environmental Sciences, University of Hasselt, Agoralaan D, BE-3590, Diepenbeek, Hasselt, Belgium; Mycology and Aerobiology, Sciensano (Belgian Institute of Health), Juliette Wytsmanstraat 14, BE-1050, Brussels, Belgium.
| | - Sebastien Dujardin
- Division Forest, Nature and Landscape, University of Leuven (KU Leuven), Celestijnenlaan 200E-2411, BE-3001, Leuven, Belgium; Department of Geography, Institute of Life Earth and Environment (ILEE), University of Namur, Namur, Belgium
| | - Benoit Nemery
- Center for Environment and Health, Department of Public Health and Primary Care, University of Leuven, Herestraat 49-706, BE-3000, Leuven, Belgium
| | - An Van Nieuwenhuyse
- Risk and Health Impact Assessment, Sciensano (Belgian Institute of Health), Juliette Wytsmanstraat 14, BE-1050, Brussels, Belgium; Center for Environment and Health, Department of Public Health and Primary Care, University of Leuven, Herestraat 49-706, BE-3000, Leuven, Belgium
| | - Jos Van Orshoven
- Division Forest, Nature and Landscape, University of Leuven (KU Leuven), Celestijnenlaan 200E-2411, BE-3001, Leuven, Belgium
| | - Jean-Marie Aerts
- Division Animal and Human Health Engineering, University of Leuven (KU Leuven), Leuven, Belgium
| | - Ben Somers
- Division Forest, Nature and Landscape, University of Leuven (KU Leuven), Celestijnenlaan 200E-2411, BE-3001, Leuven, Belgium
| | - Marijke Hendrickx
- Mycology and Aerobiology, Sciensano (Belgian Institute of Health), Juliette Wytsmanstraat 14, BE-1050, Brussels, Belgium
| | - Nicolas Bruffaerts
- Mycology and Aerobiology, Sciensano (Belgian Institute of Health), Juliette Wytsmanstraat 14, BE-1050, Brussels, Belgium
| | - Mariska Bauwelinck
- Interface Demography, Department of Sociology, Vrije Universiteit Brussel, Pleinlaan 5, BE-1050, Brussels, Belgium
| | - Lidia Casas
- Center for Environment and Health, Department of Public Health and Primary Care, University of Leuven, Herestraat 49-706, BE-3000, Leuven, Belgium; Epidemiology and Social Medicine, University of Antwerp, Universiteitsplein 1-R.232, BE-2610, Wilrijk, Antwerp, Belgium
| | - Claire Demoury
- Risk and Health Impact Assessment, Sciensano (Belgian Institute of Health), Juliette Wytsmanstraat 14, BE-1050, Brussels, Belgium
| | - Michelle Plusquin
- Center for Environmental Sciences, University of Hasselt, Agoralaan D, BE-3590, Diepenbeek, Hasselt, Belgium
| | - Tim S Nawrot
- Center for Environmental Sciences, University of Hasselt, Agoralaan D, BE-3590, Diepenbeek, Hasselt, Belgium; Center for Environment and Health, Department of Public Health and Primary Care, University of Leuven, Herestraat 49-706, BE-3000, Leuven, Belgium
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Verkley G, Perrone G, Piña M, Scholz AH, Overmann J, Zuzuarregui A, Perugini I, Turchetti B, Hendrickx M, Stacey G, Law S, Russell J, Smith D, Lima N. New ECCO model documents for Material Deposit and Transfer Agreements in compliance with the Nagoya Protocol. FEMS Microbiol Lett 2020; 367:5800986. [PMID: 32149346 PMCID: PMC7164777 DOI: 10.1093/femsle/fnaa044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 09/24/2019] [Accepted: 03/05/2020] [Indexed: 12/04/2022] Open
Abstract
The European Culture Collections’ Organisation presents two new model documents for Material Deposit Agreement (MDA) and Material Transfer Agreement (MTA) designed to enable microbial culture collection leaders to draft appropriate agreement documents for, respectively, deposit and supply of materials from a public collection. These tools provide guidance to collections seeking to draft an MDA and MTA, and are available in open access to be used, modified, and shared. The MDA model consists of a set of core fields typically included in a ‘deposit form’ to collect relevant information to facilitate assessment of the status of the material under access and benefit sharing (ABS) legislation. It also includes a set of exemplary clauses to be included in ‘terms and conditions of use’ for culture collection management and third parties. The MTA model addresses key issues including intellectual property rights, quality, safety, security and traceability. Reference is made to other important tools such as best practices and code of conduct related to ABS issues. Besides public collections, the MDA and MTA model documents can also be useful for individual researchers and microbial laboratories that collect or receive microbial cultures, keep a working collection, and wish to share their material with others.
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Affiliation(s)
- Gerard Verkley
- Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Giancarlo Perrone
- Institute of Sciences of Food Production (ISPA), National Research Council (CNR), Via Amendola 122/O, 70126 Bari, Italy
| | - Mery Piña
- CRBIP-Biological Resource Centre, Department of Microbiology, Institut Pasteur, 25-28 Rue du Docteur Roux, 75015 Paris, France
| | - Amber Hartman Scholz
- German Collection of Microorganisms and Cell Cultures (DSMZ), Inhoffenstrasse 7B, 38124 Braunschweig, Germany
| | - Jörg Overmann
- German Collection of Microorganisms and Cell Cultures (DSMZ), Inhoffenstrasse 7B, 38124 Braunschweig, Germany
| | - Aurora Zuzuarregui
- Spanish Type Culture Collection (CECT), Edificio 3 CUE, Parc Científic Universitat de València, Catedrático Agustín Escardino 9, 46980 Paterna (Valencia), Spain
| | - Iolanda Perugini
- Mycotheca Universitatis Taurinensis (MUT), Department of Life Sciences and Systems Biology, University of Torino, Viale P.A. Mattioli 25, 10125 Torino, Italy
| | - Benedetta Turchetti
- Industrial Yeasts Collection (DBVPG), Department of Agriculture, Food and Environmental Sciences, University of Perugia, Borgo XX Giugno 74, I-06121 Perugia, Italy
| | - Marijke Hendrickx
- BCCM/IHEM Fungal Collection, Mycology & Aerobiology, Sciensano, Juliette Wytsmanstraat 14, B-1050 Brussels, Belgium
| | - Glyn Stacey
- International Stem Cell Banking initiative, Barley, Hertfordshire, SG88HZ, UK
| | - Samantha Law
- National Collection of Industrial, Food and Marine Bacteria (NCIMB), Ferguson Building, Craibstone Estate, Bucksburn AR21 9YA, Aberdeen, UK
| | - Julie Russell
- Public Health England (PHE) Culture Collections, Porton Down, SP4 0JG Salisbury, UK
| | | | - Nelson Lima
- Micoteca da Universidade do Minho (MUM), CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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10
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D'hooge E, Becker P, Stubbe D, Normand AC, Piarroux R, Hendrickx M. Black aspergilli: A remaining challenge in fungal taxonomy? Med Mycol 2020; 57:773-780. [PMID: 30535052 DOI: 10.1093/mmy/myy124] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/18/2018] [Accepted: 10/24/2018] [Indexed: 12/14/2022] Open
Abstract
Aspergillus section Nigri is a taxonomically difficult but medically and economically important group. In this study, an update of the taxonomy of A. section Nigri strains within the BCCM/IHEM collection has been conducted. The identification accuracy of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) was tested and the antifungal susceptibilities of clinical isolates were evaluated. A total of 175 strains were molecularly analyzed. Three regions were amplified (ITS, benA, and caM) and a multi-locus phylogeny of the combined loci was created by using maximum likelihood analysis. The in-house MALDI-TOF MS reference database was extended and an identification data set of 135 strains was run against a reference data set. Antifungal susceptibility was tested for voriconazole, itraconazole, and amphotericin B, using the EUCAST method. Phylogenetic analysis revealed 18 species in our data set. MALDI-TOF MS was able to distinguish between A. brasiliensis, A. brunneoviolaceus, A. neoniger, A. niger, A. tubingensis, and A. welwitschiae of A. sect. Nigri. In the routine clinical lab, isolates of A. sect. Nigri are often identified as A. niger. However, in the clinical isolates of our data set, A. tubingensis (n = 35) and A. welwitschiae (n = 34) are more common than A. niger (n = 9). Decreased antifungal susceptibility to azoles was observed in clinical isolates of the /tubingensis clade. This emphasizes the importance of identification up to species level or at least up to clade level in the clinical lab. Our results indicate that MALDI-TOF MS can be a powerful tool to replace classical morphology.
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Affiliation(s)
- Elizabet D'hooge
- BCCM/IHEM collection, Mycology and Aerobiology, Sciensano, J. Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Pierre Becker
- BCCM/IHEM collection, Mycology and Aerobiology, Sciensano, J. Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Dirk Stubbe
- BCCM/IHEM collection, Mycology and Aerobiology, Sciensano, J. Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Anne-Cécile Normand
- Laboratoire de Parasitologie-Mycologie, Hôpital Pitié-Salpêtrière et Sorbonne Université, Paris, France
| | - Renaud Piarroux
- Laboratoire de Parasitologie-Mycologie, Hôpital Pitié-Salpêtrière et Sorbonne Université, Paris, France
| | - Marijke Hendrickx
- BCCM/IHEM collection, Mycology and Aerobiology, Sciensano, J. Wytsmanstraat 14, 1050 Brussels, Belgium
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11
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Becker P, Lecerf P, Claereboudt J, Devleesschauwer B, Packeu A, Hendrickx M. Superficial mycoses in Belgium: Burden, costs and antifungal drugs consumption. Mycoses 2020; 63:500-508. [PMID: 32048335 DOI: 10.1111/myc.13063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 11/20/2019] [Revised: 01/20/2020] [Accepted: 02/08/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Monitoring of superficial mycoses requires more attention due to their important incidence, health costs and antifungal drugs consumption. OBJECTIVES The objectives were to estimate the burden of superficial mycoses in Belgium and to assess trends in associated antifungal consumption. METHODS The burden of dermatophytoses (including onychomycosis), as well as skin and genital candidiasis, was estimated using disability-adjusted life years (DALY). Moreover, trends in systemic and topical antifungal consumption in ambulatory care were examined for the period 2010-2017, together with their associated costs. RESULTS Due to their high incidence and long treatment duration, dermatophytoses represented the bulk of the burden, accounting for 92.2% of the total DALYs of superficial mycoses. Terbinafine was the most prescribed antifungal in terms of doses (35.4% of the total doses) while fluconazole was the most delivered drug in terms of packages (29.1% of the total packages). More than 70% of the prescriptions were made by general practitioners while consumption varied according to age and gender of the patients. A global 12% decrease in antifungal prescriptions was observed between 2011 and 2017. However, this reduction would result mainly from packaging changes and increased self-medication. A significant decrease in itraconazole treatments was notably compensated by an increased prescription of fluconazole packages. CONCLUSION This study emphasises that dermatological presentations of superficial mycoses are the most important in terms of both burden and antifungal consumption in Belgium. Further reduction in antifungals use can be achieved by applying the adequate treatment after identification of the causative agent.
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Affiliation(s)
- Pierre Becker
- Department of Mycology and Aerobiology, Sciensano, Brussels, Belgium
| | - Pauline Lecerf
- Dermatology Department, University Hospitals Brugmann & Saint-Pierre, Université Libre de Bruxelles, Brussels, Belgium
| | - Julie Claereboudt
- Gynaecology and Obstetrics Department, Sainte-Anne Saint-Remi Clinic, CHIREC, Université Libre de Bruxelles, Brussels, Belgium
| | - Brecht Devleesschauwer
- Department of Epidemiology and Public Health, Sciensano, Brussels, Belgium.,Department of Veterinary Public Health and Food Safety, Ghent University, Merelbeke, Belgium
| | - Ann Packeu
- Department of Mycology and Aerobiology, Sciensano, Brussels, Belgium
| | - Marijke Hendrickx
- Department of Mycology and Aerobiology, Sciensano, Brussels, Belgium
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12
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Santamaria A, Hendrickx M, Coussens S, Bornkessel-Schlesewsky I, Kohler M. Affective modulation of sleep-dependent memory consolidation across the lifespan. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.934] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Becker P, Bosschaerts M, Chaerle P, Daniel HM, Hellemans A, Olbrechts A, Rigouts L, Wilmotte A, Hendrickx M. Public Microbial Resource Centers: Key Hubs for Findable, Accessible, Interoperable, and Reusable (FAIR) Microorganisms and Genetic Materials. Appl Environ Microbiol 2019; 85:e01444-19. [PMID: 31471301 PMCID: PMC6803313 DOI: 10.1128/aem.01444-19] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
In the context of open science, the availability of research materials is essential for knowledge accumulation and to maximize the impact of scientific research. In microbiology, microbial domain biological resource centers (mBRCs) have long-standing experience in preserving and distributing authenticated microbial strains and genetic materials (e.g., recombinant plasmids and DNA libraries) to support new discoveries and follow-on studies. These culture collections play a central role in the conservation of microbial biodiversity and have expertise in cultivation, characterization, and taxonomy of microorganisms. Information associated with preserved biological resources is recorded in databases and is accessible through online catalogues. Legal expertise developed by mBRCs guarantees end users the traceability and legality of the acquired material, notably with respect to the Nagoya Protocol. However, awareness of the advantages of depositing biological materials in professional repositories remains low, and the necessity of securing strains and genetic resources for future research must be emphasized. This review describes the unique position of mBRCs in microbiology and molecular biology through their history, evolving roles, expertise, services, challenges, and international collaborations. It also calls for an increased deposit of strains and genetic resources, a responsibility shared by scientists, funding agencies, and publishers. Journal policies requesting a deposit during submission of a manuscript represent one of the measures to make more biological materials available to the broader community, hence fully releasing their potential and improving openness and reproducibility in scientific research.
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Affiliation(s)
- P Becker
- BCCM/IHEM Fungi Collection, Mycology and Aerobiology, Sciensano, Brussels, Belgium
| | - M Bosschaerts
- BCCM Coordination Cell, Belgian Science Policy, Brussels, Belgium
| | - P Chaerle
- BCCM/DCG Diatoms Collection, Ghent University, Ghent, Belgium
| | - H-M Daniel
- BCCM/MUCL, Mycothèque de l'Université Catholique de Louvain, Earth and Life Institute, Mycology Laboratory, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - A Hellemans
- BCCM/LMG Bacteria Collection, Laboratory of Microbiology, Faculty of Science, Ghent University, Ghent, Belgium
| | - A Olbrechts
- BCCM/GeneCorner Plasmid Collection, Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - L Rigouts
- BCCM/ITM Mycobacteria Collection, Institute of Tropical Medicine, Antwerp, Belgium
| | - A Wilmotte
- BCCM/ULC Cyanobacteria Collection, InBios-Centre for Protein Engineering, Université de Liège, Liège, Belgium
| | - M Hendrickx
- BCCM/IHEM Fungi Collection, Mycology and Aerobiology, Sciensano, Brussels, Belgium
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14
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Aerts R, Stas M, Vanlessen N, Hendrickx M, Bruffaerts N, Hoebeke L, Dendoncker N, Dujardin S, Saenen ND, Van Nieuwenhuyse A, Aerts JM, Van Orshoven J, Nawrot TS, Somers B. Residential green space and seasonal distress in a cohort of tree pollen allergy patients. Int J Hyg Environ Health 2019; 223:71-79. [PMID: 31628039 DOI: 10.1016/j.ijheh.2019.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 05/08/2019] [Revised: 10/04/2019] [Accepted: 10/08/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Residential green space may improve human health, for example by promoting physical activity and by reducing stress. Conversely, residential green space may increase stress by emitting aeroallergens and exacerbating allergic disease. Here we examine impacts of exposure to residential green space on distress in the susceptible subpopulation of adults sensitized to tree pollen allergens. METHODS In a panel study of 88 tree pollen allergy patients we analyzed self-reported mental health (GHQ-12), perceived presence of allergenic trees (hazel, alder, birch) near the residence and residential green space area within 1 km distance [high (≥3 m) and low (<3 m) green]. Results were adjusted for patients' background data (gender, age, BMI, smoking status, physical activity, commuting distance, education level, allergy medication use and chronic respiratory problems) and compared with distress in the general population (N = 2467). RESULTS Short-term distress [mean GHQ-12 score 2.1 (95% confidence interval 1.5-2.7)] was higher in the study population than in the general population [1.5 (1.4-1.7)]. Residential green space had protective effects against short-term distress [high green, per combined surface area of 10 ha: adjusted odds ratio OR = 0.94 (95% confidence interval 0.90-0.99); low green, per 10 ha: OR = 0.85 (0.78-0.93)]. However, distress was higher in patients who reported perceived presence of allergenic trees near their residence [present vs. absent: OR = 2.04 (1.36-3.07)]. CONCLUSIONS Perceived presence of allergenic tree species in the neighbourhood of the residence of tree pollen allergy patients modulates the protective effect of residential green space against distress during the airborne tree pollen season.
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Affiliation(s)
- Raf Aerts
- Risk and Health Impact Assessment, Sciensano (Belgian Institute of Health), Brussels, Belgium; Division Forest, Nature and Landscape, University of Leuven (KU Leuven), Leuven, Belgium; Centre for Environmental Sciences, University of Hasselt, Hasselt, Belgium.
| | - Michiel Stas
- Division Forest, Nature and Landscape, University of Leuven (KU Leuven), Leuven, Belgium; Division Animal and Human Health Engineering, University of Leuven (KU Leuven), Leuven, Belgium
| | | | - Marijke Hendrickx
- Mycology and Aerobiology, Sciensano (Belgian Institute of Health), Brussels, Belgium
| | - Nicolas Bruffaerts
- Mycology and Aerobiology, Sciensano (Belgian Institute of Health), Brussels, Belgium
| | - Lucie Hoebeke
- Mycology and Aerobiology, Sciensano (Belgian Institute of Health), Brussels, Belgium
| | - Nicolas Dendoncker
- Department of Geography, Institute of Life Earth and Environment (ILEE), University of Namur, Namur, Belgium
| | - Sebastien Dujardin
- Division Forest, Nature and Landscape, University of Leuven (KU Leuven), Leuven, Belgium; Department of Geography, Institute of Life Earth and Environment (ILEE), University of Namur, Namur, Belgium
| | - Nelly D Saenen
- Risk and Health Impact Assessment, Sciensano (Belgian Institute of Health), Brussels, Belgium; Centre for Environmental Sciences, University of Hasselt, Hasselt, Belgium
| | - An Van Nieuwenhuyse
- Risk and Health Impact Assessment, Sciensano (Belgian Institute of Health), Brussels, Belgium; Department of Public Health and Primary Care, University of Leuven (KU Leuven), Belgium
| | - Jean-Marie Aerts
- Division Animal and Human Health Engineering, University of Leuven (KU Leuven), Leuven, Belgium
| | - Jos Van Orshoven
- Division Forest, Nature and Landscape, University of Leuven (KU Leuven), Leuven, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, University of Hasselt, Hasselt, Belgium; Department of Public Health and Primary Care, University of Leuven (KU Leuven), Belgium
| | - Ben Somers
- Division Forest, Nature and Landscape, University of Leuven (KU Leuven), Leuven, Belgium
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15
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Jenoh EM, de Villiers EP, de Villiers SM, Okoth S, Jefwa J, Kioko E, Kaimenyi D, Hendrickx M, Dahdouh-Guebas F, Koedam N. Infestation mechanisms of two woodborer species in the mangrove Sonneratia alba J. Smith in Kenya and co-occurring endophytic fungi. PLoS One 2019; 14:e0221285. [PMID: 31585459 PMCID: PMC6777984 DOI: 10.1371/journal.pone.0221285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 08/02/2019] [Indexed: 11/18/2022] Open
Abstract
Insect damage on trees can severely affect the quality of timber, reduce the fecundity of the host and render it susceptible to fungal infestation and disease. Such pathology weakens or eventually kills the host. Infestation by two insect woodborer species (a moth and a beetle) is causing mortality of Sonneratia alba, a wide-ranging pioneer mangrove species of the Indo-Pacific. Establishing the infestation mechanism of the two insect woodborer species is an initial and essential step towards understanding their ecological role in the mangroves and in determining sustainable management priorities and options. Our main objectives were to investigate the infestation mechanism employed by the two insect woodborers which infest S. alba trees, to establish the occurrence of secondary infestation by endophytic fungi in the infested S. alba branches, and to explore a control management option to the woodborer infestation. We conducted an external inspection of infested branches in two large embayments in Kenya, Gazi Bay and Mida Creek, and by splitting infested branches we determined the respective internal infestation mechanisms. Infested wood samples from Gazi Bay and Mida Creek were incubated at 28±1°C for 3–5 days to establish the presence of fungi. A survey was conducted in both Gazi Bay and Mida Creek to ascertain the presence of ants on S. alba. The infestation characteristics of the two insect woodborer species were different. It took 6–8 months for the beetle to kill a branch of 150 cm—200 cm long. For the moth to kill a branch, it depended upon several factors including the contribution by multiple species, other than the moth infestation alone. A total of 15 endophytic fungal species were identified. Two ant species Oecophylla longipoda and a Pheidole sp. inhabited 62% and 69% respectively of sampled S. alba trees in Gazi Bay whereas only Pheidole sp. inhabited 17% of the sampled S. alba trees in Mida Creek. In summary, we have documented the time it takes each woodborer species to kill a branch, the infestation mechanism of the two insect woodborers, and we hypothesized on the role of two ant species. The presence of several different fungal species was ascertained, and we discussed their possible role in the infested wood. Our results cannot unambiguously associate the woodborers and identified fungi. We recommend further studies to investigate the presence or absence, and if present, the nature of fungi in the gut of the woodborers.
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Affiliation(s)
- Elisha Mrabu Jenoh
- Kenya Marine and Fisheries Research Institute (KMFRI), Mombasa, Kenya
- Laboratory of Systems Ecology and Resource Management, Département de Biologie des Organismes, Université Libre de Bruxelles (ULB), Brussels, Belgium
- Laboratory of Plant Biology and Nature Management (APNA), Ecology & Biodiversity, Vrije Universiteit Brussel, Brussels, Belgium
- * E-mail:
| | | | | | - Sheila Okoth
- University of Nairobi (UoN), Centre for Biotechnology and Bioinformatics (CEBIB), Nairobi, Kenya
| | - Joyce Jefwa
- National Museums of Kenya (NMK), Nairobi, Kenya
| | | | - Davies Kaimenyi
- Pwani University Department of Biochemistry and Biotechnology, Kilifi Kenya
| | - Marijke Hendrickx
- BCCM/IHEM: Scientific Institute of Public Health, Mycology and Aerobiology Section, Brussels, Belgium. Rue Juliette Wytsmanstraat, Brussels, Belgium
| | - Farid Dahdouh-Guebas
- Laboratory of Systems Ecology and Resource Management, Département de Biologie des Organismes, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Nico Koedam
- Laboratory of Plant Biology and Nature Management (APNA), Ecology & Biodiversity, Vrije Universiteit Brussel, Brussels, Belgium
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16
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Baert F, Stubbe D, D’hooge E, Packeu A, Hendrickx M. Updating the Taxonomy of Dermatophytes of the BCCM/IHEM Collection According to the New Standard: A Phylogenetic Approach. Mycopathologia 2019; 185:161-168. [DOI: 10.1007/s11046-019-00338-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 04/30/2019] [Indexed: 11/30/2022]
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17
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Goemaere B, Lagrou K, Spriet I, Hendrickx M, Vandael E, Becker P, Catry B. Systemic antifungal drug use in Belgium—One of the biggest antifungal consumers in Europe. Mycoses 2019; 62:542-550. [DOI: 10.1111/myc.12912] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 03/28/2019] [Accepted: 03/14/2019] [Indexed: 11/26/2022]
Affiliation(s)
- Berdieke Goemaere
- BCCM/IHEM Fungal Collection Service of Mycology and Aerobiology Sciensano Brussels Belgium
| | - Katrien Lagrou
- Department of Microbiology and Immunology KU Leuven Leuven Belgium
- Clinical Department of Laboratory Medicine National Reference Centre for Mycosis University Hospitals Leuven Leuven Belgium
| | - Isabel Spriet
- Department of Pharmaceutical and Pharmacological Sciences KU Leuven Leuven Belgium
- Pharmacy Department University Hospitals Leuven Leuven Belgium
| | - Marijke Hendrickx
- BCCM/IHEM Fungal Collection Service of Mycology and Aerobiology Sciensano Brussels Belgium
| | - Eline Vandael
- Healthcare‐Associated Infections and Antimicrobial Resistance Sciensano Brussels Belgium
| | - Pierre Becker
- BCCM/IHEM Fungal Collection Service of Mycology and Aerobiology Sciensano Brussels Belgium
| | - Boudewijn Catry
- Healthcare‐Associated Infections and Antimicrobial Resistance Sciensano Brussels Belgium
- Faculty of Medicine Université Libre de Bruxelles (ULB) Brussels Belgium
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18
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Becker P, Normand AC, Vanantwerpen G, Vanrobaeys M, Haesendonck R, Vercammen F, Stubbe D, Piarroux R, Hendrickx M. Identification of fungal isolates by MALDI-TOF mass spectrometry in veterinary practice: validation of a web application. J Vet Diagn Invest 2019; 31:471-474. [PMID: 30943879 DOI: 10.1177/1040638719835577] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) has emerged as a reliable method to identify fungal isolates. The success of this approach relies on the availability of exhaustive databases, but the latter were built with a focus on human pathogens. We assessed a large in-house database of reference spectra and a dedicated web application for their suitability for use in veterinary laboratories. A panel of 290 mold and yeast isolates representing 69 different fungal species was isolated from various animals (including pets, cattle, and zoo animals) and identified using both MALDI-TOF MS and conventional techniques. The performance of the 2 methods was compared, and identifications were confirmed by DNA sequencing. MALDI-TOF MS allowed distinction between some closely related species and achieved 89% correct identification at the species level. In comparison, only 60% of the isolates were correctly identified with conventional approaches. Using this online application, MALDI-TOF MS thus appears to be a relevant alternative for the identification of fungal isolates encountered by animal health professionals.
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Affiliation(s)
- Pierre Becker
- Belgian Coordinated Collections of Microorganisms (BCCM/IHEM) Fungal Collection, Mycology and Aerobiology, Sciensano, Brussels, Belgium (Becker, Stubbe, Hendrickx).,Animal Health Care Flanders, Torhout, Belgium (Vanantwerpen, Vanrobaeys).,Zoolyx, Aalst, Belgium (Haesendonck).,Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium (Vercammen).,Sorbonne University, National Institute for Health and Medical Research, Pierre-Louis Institute of Epidemiology and Public Health (Piarroux).,Public Assistance-Hospitals of Paris, University Hospital Pitie-Salpetriere (Normand, Piarroux), Paris, France
| | - Anne-Cécile Normand
- Belgian Coordinated Collections of Microorganisms (BCCM/IHEM) Fungal Collection, Mycology and Aerobiology, Sciensano, Brussels, Belgium (Becker, Stubbe, Hendrickx).,Animal Health Care Flanders, Torhout, Belgium (Vanantwerpen, Vanrobaeys).,Zoolyx, Aalst, Belgium (Haesendonck).,Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium (Vercammen).,Sorbonne University, National Institute for Health and Medical Research, Pierre-Louis Institute of Epidemiology and Public Health (Piarroux).,Public Assistance-Hospitals of Paris, University Hospital Pitie-Salpetriere (Normand, Piarroux), Paris, France
| | - Gerty Vanantwerpen
- Belgian Coordinated Collections of Microorganisms (BCCM/IHEM) Fungal Collection, Mycology and Aerobiology, Sciensano, Brussels, Belgium (Becker, Stubbe, Hendrickx).,Animal Health Care Flanders, Torhout, Belgium (Vanantwerpen, Vanrobaeys).,Zoolyx, Aalst, Belgium (Haesendonck).,Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium (Vercammen).,Sorbonne University, National Institute for Health and Medical Research, Pierre-Louis Institute of Epidemiology and Public Health (Piarroux).,Public Assistance-Hospitals of Paris, University Hospital Pitie-Salpetriere (Normand, Piarroux), Paris, France
| | - Mia Vanrobaeys
- Belgian Coordinated Collections of Microorganisms (BCCM/IHEM) Fungal Collection, Mycology and Aerobiology, Sciensano, Brussels, Belgium (Becker, Stubbe, Hendrickx).,Animal Health Care Flanders, Torhout, Belgium (Vanantwerpen, Vanrobaeys).,Zoolyx, Aalst, Belgium (Haesendonck).,Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium (Vercammen).,Sorbonne University, National Institute for Health and Medical Research, Pierre-Louis Institute of Epidemiology and Public Health (Piarroux).,Public Assistance-Hospitals of Paris, University Hospital Pitie-Salpetriere (Normand, Piarroux), Paris, France
| | - Roel Haesendonck
- Belgian Coordinated Collections of Microorganisms (BCCM/IHEM) Fungal Collection, Mycology and Aerobiology, Sciensano, Brussels, Belgium (Becker, Stubbe, Hendrickx).,Animal Health Care Flanders, Torhout, Belgium (Vanantwerpen, Vanrobaeys).,Zoolyx, Aalst, Belgium (Haesendonck).,Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium (Vercammen).,Sorbonne University, National Institute for Health and Medical Research, Pierre-Louis Institute of Epidemiology and Public Health (Piarroux).,Public Assistance-Hospitals of Paris, University Hospital Pitie-Salpetriere (Normand, Piarroux), Paris, France
| | - Francis Vercammen
- Belgian Coordinated Collections of Microorganisms (BCCM/IHEM) Fungal Collection, Mycology and Aerobiology, Sciensano, Brussels, Belgium (Becker, Stubbe, Hendrickx).,Animal Health Care Flanders, Torhout, Belgium (Vanantwerpen, Vanrobaeys).,Zoolyx, Aalst, Belgium (Haesendonck).,Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium (Vercammen).,Sorbonne University, National Institute for Health and Medical Research, Pierre-Louis Institute of Epidemiology and Public Health (Piarroux).,Public Assistance-Hospitals of Paris, University Hospital Pitie-Salpetriere (Normand, Piarroux), Paris, France
| | - Dirk Stubbe
- Belgian Coordinated Collections of Microorganisms (BCCM/IHEM) Fungal Collection, Mycology and Aerobiology, Sciensano, Brussels, Belgium (Becker, Stubbe, Hendrickx).,Animal Health Care Flanders, Torhout, Belgium (Vanantwerpen, Vanrobaeys).,Zoolyx, Aalst, Belgium (Haesendonck).,Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium (Vercammen).,Sorbonne University, National Institute for Health and Medical Research, Pierre-Louis Institute of Epidemiology and Public Health (Piarroux).,Public Assistance-Hospitals of Paris, University Hospital Pitie-Salpetriere (Normand, Piarroux), Paris, France
| | - Renaud Piarroux
- Belgian Coordinated Collections of Microorganisms (BCCM/IHEM) Fungal Collection, Mycology and Aerobiology, Sciensano, Brussels, Belgium (Becker, Stubbe, Hendrickx).,Animal Health Care Flanders, Torhout, Belgium (Vanantwerpen, Vanrobaeys).,Zoolyx, Aalst, Belgium (Haesendonck).,Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium (Vercammen).,Sorbonne University, National Institute for Health and Medical Research, Pierre-Louis Institute of Epidemiology and Public Health (Piarroux).,Public Assistance-Hospitals of Paris, University Hospital Pitie-Salpetriere (Normand, Piarroux), Paris, France
| | - Marijke Hendrickx
- Belgian Coordinated Collections of Microorganisms (BCCM/IHEM) Fungal Collection, Mycology and Aerobiology, Sciensano, Brussels, Belgium (Becker, Stubbe, Hendrickx).,Animal Health Care Flanders, Torhout, Belgium (Vanantwerpen, Vanrobaeys).,Zoolyx, Aalst, Belgium (Haesendonck).,Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium (Vercammen).,Sorbonne University, National Institute for Health and Medical Research, Pierre-Louis Institute of Epidemiology and Public Health (Piarroux).,Public Assistance-Hospitals of Paris, University Hospital Pitie-Salpetriere (Normand, Piarroux), Paris, France
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19
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Ziska LH, Makra L, Harry SK, Bruffaerts N, Hendrickx M, Coates F, Saarto A, Thibaudon M, Oliver G, Damialis A, Charalampopoulos A, Vokou D, Heiđmarsson S, Guđjohnsen E, Bonini M, Oh JW, Sullivan K, Ford L, Brooks GD, Myszkowska D, Severova E, Gehrig R, Ramón GD, Beggs PJ, Knowlton K, Crimmins AR. Temperature-related changes in airborne allergenic pollen abundance and seasonality across the northern hemisphere: a retrospective data analysis. Lancet Planet Health 2019; 3:e124-e131. [PMID: 30904111 DOI: 10.1016/s2542-5196(19)30015-4] [Citation(s) in RCA: 129] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 01/30/2019] [Accepted: 01/31/2019] [Indexed: 05/10/2023]
Abstract
BACKGROUND Ongoing climate change might, through rising temperatures, alter allergenic pollen biology across the northern hemisphere. We aimed to analyse trends in pollen seasonality and pollen load and to establish whether there are specific climate-related links to any observed changes. METHODS For this retrospective data analysis, we did an extensive search for global datasets with 20 years or more of airborne pollen data that consistently recorded pollen season indices (eg, duration and intensity). 17 locations across three continents with long-term (approximately 26 years on average) quantitative records of seasonal concentrations of multiple pollen (aeroallergen) taxa met the selection criteria. These datasets were analysed in the context of recent annual changes in maximum temperature (Tmax) and minimum temperature (Tmin) associated with anthropogenic climate change. Seasonal regressions (slopes) of variation in pollen load and pollen season duration over time were compared to Tmax, cumulative degree day Tmax, Tmin, cumulative degree day Tmin, and frost-free days among all 17 locations to ascertain significant correlations. FINDINGS 12 (71%) of the 17 locations showed significant increases in seasonal cumulative pollen or annual pollen load. Similarly, 11 (65%) of the 17 locations showed a significant increase in pollen season duration over time, increasing, on average, 0·9 days per year. Across the northern hemisphere locations analysed, annual cumulative increases in Tmax over time were significantly associated with percentage increases in seasonal pollen load (r=0·52, p=0·034) as were annual cumulative increases in Tmin (r=0·61, p=0·010). Similar results were observed for pollen season duration, but only for cumulative degree days (higher than the freezing point [0°C or 32°F]) for Tmax (r=0·53, p=0·030) and Tmin (r=0·48, p=0·05). Additionally, temporal increases in frost-free days per year were significantly correlated with increases in both pollen load (r=0·62, p=0·008) and pollen season duration (r=0·68, p=0·003) when averaged for all 17 locations. INTERPRETATION Our findings reveal that the ongoing increase in temperature extremes (Tmin and Tmax) might already be contributing to extended seasonal duration and increased pollen load for multiple aeroallergenic pollen taxa in diverse locations across the northern hemisphere. This study, done across multiple continents, highlights an important link between ongoing global warming and public health-one that could be exacerbated as temperatures continue to increase. FUNDING None.
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Affiliation(s)
- Lewis H Ziska
- US Department of Agriculture, Beltsville Agricultural Research Center, Beltsville, MD, USA.
| | - László Makra
- Institute of Economics and Rural Development University of Szeged, Hódmezővásárhely, Hungary
| | | | | | | | | | - Annika Saarto
- University of Turku, Aerobiology Unit, Turku, Finland
| | - Michel Thibaudon
- Réseau National de Surveillance Aérobiologique, Brussieu, France
| | - Gilles Oliver
- Réseau National de Surveillance Aérobiologique, Brussieu, France
| | - Athanasios Damialis
- Institute of Environmental Medicine, Technical University of Munich, Helmholtz Zentrum München, Augsburg, Germany; Department of Ecology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - Despoina Vokou
- Department of Ecology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | | | - Maira Bonini
- Department of Hygiene and Health Prevention, Milano, Parabiago, Mi, Italy
| | - Jae-Won Oh
- Department of Pediatrics, College of Medicine, Hanyang University, Seoul, Korea
| | | | - Linda Ford
- Asthma and Allergy Center, Omaha, NE, USA
| | | | - Dorota Myszkowska
- Department of Clinical and Environmental Allergology, Jagiellonian University, Krakow, Poland
| | - Elena Severova
- Biological Faculty, Moscow State University, Moscow, Russia
| | - Regula Gehrig
- Federal Office of Meteorology and Climatology, Zurich, Switzerland
| | | | - Paul J Beggs
- Department of Environmental Sciences, Macquarie University, Sydney, NSW, Australia
| | - Kim Knowlton
- Science Center, Natural Resources Defense Council, New York, NY, USA
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20
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Imbert S, Normand AC, Gabriel F, Cassaing S, Bonnal C, Costa D, Lachaud L, Hasseine L, Kristensen L, Schuttler C, Raberin H, Brun S, Hendrickx M, Stubbe D, Piarroux R, Fekkar A. Multi-centric evaluation of the online MSI platform for the identification of cryptic and rare species of Aspergillus by MALDI-TOF. Med Mycol 2019; 57:962-968. [DOI: 10.1093/mmy/myz004] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 01/04/2019] [Accepted: 01/08/2019] [Indexed: 11/12/2022] Open
Abstract
Abstract
The taxonomy of Aspergillus species has recently been revolutionized with the introduction of cryptic species and section concepts. However, their species-level identification in routine laboratories remains a challenge. The aim of this study was to prospectively assess the identification accuracy of cryptic species of Aspergillus in various laboratories using the mass spectrometry identification (MSI) platform, an independent and freely accessible online mass spectrometry database. Over a 12-month period, when a select set of MSI users identified cryptic species, they were contacted and requested to send the isolates to our laboratory for sequence-based identification. Sequence and MSI identification results were then compared. During the study period, 5108 Aspergillus isolates were identified using MSI including 1477 (28.9%) cryptic species. A total of 245 isolates that corresponded to 56 cryptic species and 13 sections were randomly selected for DNA sequencing confirmation. Agreement between the two methods was 99.6% at the section level and 66.1% at the species level. However, almost all discrepancies (72/83, 86.7%) were misidentifications between closely related cryptic species belonging to the same section. Fifty-one isolates from noncryptic species were also identified, thus yielding 100% and 92.2% agreement at the section and species level, respectively. Although the MSI fungus database is a reliable tool to identify Aspergillus at the section level, the database still requires adjustment to correctly identify rare or cryptic species at the species level. Nevertheless, the application properly differentiated between cryptic and sensu stricto species in the same section, thus alerting on possible specific isolate characteristics.
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Affiliation(s)
- Sébastien Imbert
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Parasitologie Mycologie, F-75013 Paris, France
- Centre d’Immunologie et des Maladies Infectieuses, CIMI-Paris, F-75013 Paris, France
- Sorbonne Université, AP-HP, Hôpital Pitié-Salpêtrière, F-75013 Paris, France
| | - Anne Cécile Normand
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Parasitologie Mycologie, F-75013 Paris, France
| | - Frédéric Gabriel
- Centre Hospitalier Universitaire de Bordeaux, Service de Parasitologie Mycologie, F-33000, Bordeaux, France
| | - Sophie Cassaing
- Centre Hospitalier Universitaire de Toulouse, Service de Parasitologie Mycologie, F-31059, Toulouse, France
| | - Christine Bonnal
- AP-HP, Hôpital Bichat-Claude Bernard, Service de Parasitologie Mycologie, F-75018 Paris, France
| | - Damien Costa
- Centre Hospitalier Universitaire de Rouen, Service de Parasitologie Mycologie, F-76000, Rouen, France
| | - Laurence Lachaud
- Centre Hospitalier Universitaire de Montpellier, Service de Parasitologie Mycologie, F-34000, Montpellier, France
| | - Lilia Hasseine
- Centre Hospitalier Universitaire de Nice, Service de Parasitologie Mycologie, F-06000, Nice, France
| | - Lise Kristensen
- Aarhus University Hospital, Department of Clinical Microbiology, DK-8200, Aarhus N, Denmark
| | | | - Hélène Raberin
- Centre Hospitalier Universitaire de Saint Etienne, Service de Parasitologie Mycologie, F-42100, Saint Etienne, France
| | - Sophie Brun
- AP-HP, Hôpital Avicenne, Service de Parasitologie Mycologie, F-93000 Bobigny, France
| | - Marijke Hendrickx
- Service of Mycology and Aerobiology, BCCM/IHEM Fungal collection, Scientific Institute of Public Health, B-1050, Brussels, Belgium
| | - Dirk Stubbe
- Service of Mycology and Aerobiology, BCCM/IHEM Fungal collection, Scientific Institute of Public Health, B-1050, Brussels, Belgium
| | - Renaud Piarroux
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Parasitologie Mycologie, F-75013 Paris, France
- Sorbonne Université, AP-HP, Hôpital Pitié-Salpêtrière, F-75013 Paris, France
- Institut Pierre Louis d’Epidémiologie et de Santé Publique, INSERM, F-75013 Paris, France
| | - Arnaud Fekkar
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Parasitologie Mycologie, F-75013 Paris, France
- Centre d’Immunologie et des Maladies Infectieuses, CIMI-Paris, F-75013 Paris, France
- Sorbonne Université, AP-HP, Hôpital Pitié-Salpêtrière, F-75013 Paris, France
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21
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Dupont D, Normand AC, Persat F, Hendrickx M, Piarroux R, Wallon M. Comparison of matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS) systems for the identification of moulds in the routine microbiology laboratory. Clin Microbiol Infect 2018; 25:892-897. [PMID: 30394360 DOI: 10.1016/j.cmi.2018.10.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 09/27/2018] [Accepted: 10/13/2018] [Indexed: 11/17/2022]
Abstract
OBJECTIVES The purpose of this study was to compare the efficiency of mould identification of two matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS) systems - Vitek MS (VMS) and Microflex LT (MLT) - and the MSI application. METHODS Moulds were collected retrospectively and prospectively to display epidemiological diversity of a microbiology laboratory. All of them were identified via sequencing. Strains were then identified using the VMS v3.0, the MLT, and the MSI software applied on MLT spectra. Rates of correct identifications to the species, to the complex, and to the genus level were compared with the molecular reference standard. RESULTS A total of 102 isolates were collected. The rate of correct identification to the species level with the MLT was 42.2% (43/102) with a threshold of 1.7 (vs. 16.7% (17/102) with a threshold of 2.0, p < 0.05). The VMS performed better than the MLT with a threshold of 1.7 for species (49.0% (50/102), p 0.33) and complex level identifications (71.6% (73/102) vs. 54.9% (56/102), p < 0.05). However the highest performances were observed when the MLT spectra were analysed via the Mass Spectrometry Identification (MSI) software reaching 90.2% (92/102) of correct identification to the species, 92.2% (94/102) to the species complex and 94.1% (96/102) to the genus level. CONCLUSIONS The VMS performed better than the MLT for mould identification. However, it remains of utmost importance to expand commercial databases, as performances of the MLT highly improved when using the MSI software and its extended database, reaching far above the VMS system. Thus the VMS could benefit from the use of this online tool.
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Affiliation(s)
- D Dupont
- Institut des Agents Infectieux, Parasitologie Mycologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France; Integrative Physiology of the Brain Arousal Systems, Centre de Recherche en Neurosciences de Lyon, INSERM U1028-CNRS UMR 5292, Faculté de Médecine, Université Claude Bernard Lyon 1, Lyon, France.
| | - A-C Normand
- Service de Parasitologie/Mycologie, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, F-75013, Paris, France; Sorbonne Université, INSERM, Institut Pierre-Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
| | - F Persat
- Institut des Agents Infectieux, Parasitologie Mycologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France
| | - M Hendrickx
- Mycology & Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
| | - R Piarroux
- Service de Parasitologie/Mycologie, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, F-75013, Paris, France; Sorbonne Université, INSERM, Institut Pierre-Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
| | - M Wallon
- Institut des Agents Infectieux, Parasitologie Mycologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France; Integrative Physiology of the Brain Arousal Systems, Centre de Recherche en Neurosciences de Lyon, INSERM U1028-CNRS UMR 5292, Faculté de Médecine, Université Claude Bernard Lyon 1, Lyon, France
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22
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Ielapi A, Vasiliauskaite E, Hendrickx M, Forward M, Lammens N, Van Paepegem W, Deckers JP, Vermandel M, De Beule M. A novel experimental setup for evaluating the stiffness of ankle foot orthoses. BMC Res Notes 2018; 11:649. [PMID: 30185209 PMCID: PMC6125880 DOI: 10.1186/s13104-018-3752-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 08/30/2018] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE The purpose of this study was the construction of a new semi-automated experimental setup for the evaluation of the stiffness of ankle foot orthoses (AFOs) around an axis aligned to the anatomical ankle joint during the second rocker of the gait. The setup, developed in close collaboration with the orthopedic device company V!GO NV (Wetteren, Belgium), allows measurement of plantarflexion and dorsiflexion in the sagittal plane for a maximal range of motion of 50° (- 25° plantarflexion up to 25° dorsiflexion) in a non-destructive way. RESULTS The mechanical properties of four 3D printed AFOs are investigated, based on the ranges of motion derived from the gait assessment of the patients when they walked with their AFO. The reliability of the stiffness measures was studied by the evaluation of the test-retest repeatability and the intra-tester and inter-tester variability. These studies revealed that the ankle stiffness can be measured with high reliability (ICC = 0.94-1.00). The obtained outcomes indicate that the experimental setup could be applied to measure the ankle stiffness of any topology of AFOs and, in the future, help finding the correlation with the information coming from the gait assessment of the patients.
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Affiliation(s)
- A. Ielapi
- Institute Biomedical Technology (IBiTech)-bioMMeda, Ghent University, Corneel Heymanslaan 10, Block B, 9000 Ghent, Belgium
- SIM vzw, Technologiepark 935, 9052 Zwijnaarde, Belgium
| | - E. Vasiliauskaite
- Gait & Movement Analysis Laboratory, Cerebral Palsy Reference Centrum, University Hospital Ghent, 9000 Ghent, Belgium
- SIM vzw, Technologiepark 935, 9052 Zwijnaarde, Belgium
| | - M. Hendrickx
- Institute Biomedical Technology (IBiTech)-bioMMeda, Ghent University, Corneel Heymanslaan 10, Block B, 9000 Ghent, Belgium
| | - M. Forward
- Gait & Movement Analysis Laboratory, Cerebral Palsy Reference Centrum, University Hospital Ghent, 9000 Ghent, Belgium
| | - N. Lammens
- Department of Materials Science & Engineering, Ghent University, Technologiepark-Zwijnaarde 903, 9052 Zwijnaarde, Belgium
- SIM vzw, Technologiepark 935, 9052 Zwijnaarde, Belgium
| | - W. Van Paepegem
- Department of Materials Science & Engineering, Ghent University, Technologiepark-Zwijnaarde 903, 9052 Zwijnaarde, Belgium
| | | | | | - M. De Beule
- Institute Biomedical Technology (IBiTech)-bioMMeda, Ghent University, Corneel Heymanslaan 10, Block B, 9000 Ghent, Belgium
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23
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Goemaere B, Lagrou K, Spriet I, Hendrickx M, Becker P. Clonal Spread of Candida glabrata Bloodstream Isolates and Fluconazole Resistance Affected by Prolonged Exposure: a 12-Year Single-Center Study in Belgium. Antimicrob Agents Chemother 2018; 62:e00591-18. [PMID: 29784839 PMCID: PMC6105788 DOI: 10.1128/aac.00591-18] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 05/16/2018] [Indexed: 11/20/2022] Open
Abstract
Candida glabrata is a major cause of candidemia in immunocompromised patients and is characterized by a high-level of fluconazole resistance. In the present study, the acquisition of antifungal resistance and potential clonal spread of C. glabrata were explored at a single center over a 12-year period by analyzing 187 independent clinical C. glabrata bloodstream isolates. One strain was found to be micafungin resistant due to a mutation in the FKS2 gene. Fluconazole resistance remained stable throughout the period and was observed in 20 (10.7%) of the isolates. An analysis of the antifungal consumption data revealed that recent prior exposure to fluconazole increased the risk to be infected by a resistant strain. In particular, the duration of the treatment was significantly longer for patients infected by a resistant isolate, while the total and mean daily doses received did not impact the acquisition of resistance in C. glabrata No link between genotype and resistance was found. However, multilocus variable-number tandem-repeat analyses indicated a potential intrahospital spread of some isolates between patients. These isolates shared the same genetic profiles, and infected patients were hospitalized in the same unit during an overlapping period. Finally, quantitative real-time PCR analyses showed that, unlike that for other ABC efflux pumps, the expression of CgCDR1 was significantly greater in resistant strains, suggesting that it would be more involved in fluconazole (FLC) resistance. Our study provides additional evidence that the proper administration of fluconazole is required to limit resistance and that strict hand hygiene is necessary to avoid the possible spreading of C. glabrata isolates between patients.
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Affiliation(s)
- Berdieke Goemaere
- BCCM/IHEM Fungal Collection, Service of Mycology and Aerobiology, Sciensano, Brussels, Belgium
| | - Katrien Lagrou
- Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
- Clinical Department of Laboratory Medicine, National Reference Center for Mycosis, University Hospitals Leuven, Leuven, Belgium
| | - Isabel Spriet
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
- Clinical Department of Pharmacology and Pharmacotherapy, University Hospitals Leuven, Leuven, Belgium
| | - Marijke Hendrickx
- BCCM/IHEM Fungal Collection, Service of Mycology and Aerobiology, Sciensano, Brussels, Belgium
| | - Pierre Becker
- BCCM/IHEM Fungal Collection, Service of Mycology and Aerobiology, Sciensano, Brussels, Belgium
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24
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Stein M, Tran V, Nichol KA, Lagacé-Wiens P, Pieroni P, Adam HJ, Turenne C, Walkty AJ, Normand AC, Hendrickx M, Piarroux R, Karlowsky JA. Evaluation of three MALDI-TOF mass spectrometry libraries for the identification of filamentous fungi in three clinical microbiology laboratories in Manitoba, Canada. Mycoses 2018; 61:743-753. [PMID: 29893421 DOI: 10.1111/myc.12800] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [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: 03/19/2018] [Revised: 06/01/2018] [Accepted: 06/04/2018] [Indexed: 12/16/2022]
Abstract
Matrix-assisted laser desorption ionisation-time of flight mass spectrometry (MALDI-TOF MS) is commonly used by clinical microbiology laboratories to identify bacterial pathogens and yeasts, but not for the identification of moulds. Recent progress in extraction protocols and the composition of comparative libraries support potential application of MALDI-TOF MS for mould identification in clinical microbiology laboratories. We evaluated the performance of the Bruker Microflex™ MALDI-TOF MS instrument (Billerica, MA, USA) to identify clinical isolates and reference strains of moulds using 3 libraries, the Bruker mould library, the National Institutes of Health (NIH) library and the Mass Spectrometry Identification (MSI) online library, and compared those results to conventional (morphological) and molecular (18S/ITS; gold standard) identification methods. All 3 libraries demonstrated greater accuracy in genus identification (≥94.9%) than conventional methods (86.4%). MALDI-TOF MS identified 73.3% of isolates to species level compared to only 31.7% by conventional methods. The MSI library demonstrated the highest rate of species-level identification (72.0%) compared to NIH (19.5%) and Bruker (13.6%) libraries. Greater than 20% of moulds remained unidentified to species level by all 3 MALDI-TOF MS libraries primarily because of library limitations or imperfect spectra. The overall identification rate of each MALDI-TOF MS library depended on the number of species and the number of spectra representing each species in the library.
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Affiliation(s)
- Markus Stein
- Department of Medical Microbiology and Infectious Diseases, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada.,Shared Health-Diagnostic Services, Winnipeg, MB, Canada
| | - Vanessa Tran
- Department of Medical Microbiology and Infectious Diseases, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | | | - Philippe Lagacé-Wiens
- Department of Medical Microbiology and Infectious Diseases, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada.,Shared Health-Diagnostic Services, Winnipeg, MB, Canada
| | - Peter Pieroni
- Shared Health-Diagnostic Services, Brandon, MB, Canada
| | - Heather J Adam
- Department of Medical Microbiology and Infectious Diseases, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada.,Shared Health-Diagnostic Services, Winnipeg, MB, Canada
| | - Christine Turenne
- Department of Medical Microbiology and Infectious Diseases, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada.,Shared Health-Diagnostic Services, Winnipeg, MB, Canada
| | - Andrew J Walkty
- Department of Medical Microbiology and Infectious Diseases, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada.,Shared Health-Diagnostic Services, Winnipeg, MB, Canada
| | - Anne-Cécile Normand
- Service de Parasitologie/Mycologie, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, Paris, France
| | - Marijke Hendrickx
- Mycology & Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
| | - Renaud Piarroux
- Service de Parasitologie/Mycologie, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, Paris, France
| | - James A Karlowsky
- Department of Medical Microbiology and Infectious Diseases, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada.,Shared Health-Diagnostic Services, Winnipeg, MB, Canada
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Guilbert A, Cox B, Bruffaerts N, Hoebeke L, Packeu A, Hendrickx M, De Cremer K, Bladt S, Brasseur O, Van Nieuwenhuyse A. Relationships between aeroallergen levels and hospital admissions for asthma in the Brussels-Capital Region: a daily time series analysis. Environ Health 2018; 17:35. [PMID: 29642904 PMCID: PMC5896062 DOI: 10.1186/s12940-018-0378-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 03/28/2018] [Indexed: 05/19/2023]
Abstract
BACKGROUND Outdoor pollen grain and fungal spore concentrations have been associated with severe asthma exacerbations at the population level. The specific impact of each taxon and the concomitant effect of air pollution on these symptoms have, however, still to be better characterized. This study aimed to investigate the short-term associations between ambient concentrations of various aeroallergens and hospitalizations related to asthma in the Brussels-Capital Region (Belgium), an area recording especially high rates of admissions. METHODS Based on administrative records of asthma hospitalizations and regular monitoring of 11 tree/herbaceous pollen taxa and 2 fungal spore taxa, daily time series analyses covering the 2008-2013 period were performed. Effects up to 6 days after exposure were captured by combining quasi-Poisson regression with distributed lag models, adjusting for seasonal and long-term trends, day of the week, public holidays, mean temperature and relative humidity. Effect modification by age and air pollution (PM, NO2, O3) was tested. RESULTS A significant increase in asthma hospitalizations was observed for an interquartile range increase in grass (5.9%, 95% CI: 0.0, 12.0), birch (3.2%, 95% CI: 1.1, 5.3) and hornbeam (0.7%, 95% CI: 0.2, 1.3) pollen concentrations. For several taxa including grasses, an age modification effect was notable, the hospitalization risk tending to be higher in individuals younger than 60 years. Air pollutants impacted the relationships too: the risk appeared to be stronger for grass and birch pollen concentrations in case of high PM10 and O3 concentrations respectively. CONCLUSIONS These findings suggest that airborne grass, birch and hornbeam pollen are associated with severe asthma exacerbations in the Brussels region. These compounds appear to act in synergy with air pollution and to more specifically affect young and intermediate age groups. Most of these life-threatening events could theoretically be prevented with improved disease diagnosis/management and targeted communication actions.
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Affiliation(s)
- Ariane Guilbert
- Health and Environment Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Bianca Cox
- Centre for Environmental Sciences, Hasselt University, Campus Diepenbeek Agoralaan Gebouw D, 3590 Diepenbeek, Belgium
| | - Nicolas Bruffaerts
- Mycology and Aerobiology Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Lucie Hoebeke
- Mycology and Aerobiology Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Ann Packeu
- Mycology and Aerobiology Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Marijke Hendrickx
- Mycology and Aerobiology Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Koen De Cremer
- Health and Environment Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Sandrine Bladt
- Laboratory and Air Quality Department, Brussels Environment, Avenue du Port 86c-3000, 1000 Brussels, Belgium
| | - Olivier Brasseur
- Laboratory and Air Quality Department, Brussels Environment, Avenue du Port 86c-3000, 1000 Brussels, Belgium
| | - An Van Nieuwenhuyse
- Health and Environment Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
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Bruffaerts N, De Smedt T, Delcloo A, Simons K, Hoebeke L, Verstraeten C, Van Nieuwenhuyse A, Packeu A, Hendrickx M. Comparative long-term trend analysis of daily weather conditions with daily pollen concentrations in Brussels, Belgium. Int J Biometeorol 2018; 62:483-491. [PMID: 29064036 PMCID: PMC5854748 DOI: 10.1007/s00484-017-1457-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 09/25/2017] [Accepted: 10/01/2017] [Indexed: 05/05/2023]
Abstract
A clear rise in seasonal and annual temperatures, a gradual increase of total radiation, and a relative trend of change in seasonal precipitation have been observed for the last four decades in Brussels (Belgium). These local modifications may have a direct and indirect public health impact by altering the timing and intensity of allergenic pollen seasons. In this study, we assessed the statistical correlations (Spearman's test) between pollen concentration and meteorological conditions by using long-term daily datasets of 11 pollen types (8 trees and 3 herbaceous plants) and 10 meteorological parameters observed in Brussels between 1982 and 2015. Furthermore, we analyzed the rate of change in the annual cycle of the same selected pollen types by the Mann-Kendall test. We revealed an overall trend of increase in daily airborne tree pollen (except for the European beech tree) and an overall trend of decrease in daily airborne pollen from herbaceous plants (except for Urticaceae). These results revealed an earlier onset of the flowering period for birch, oak, ash, plane, grasses, and Urticaceae. Finally, the rates of change in pollen annual cycles were shown to be associated with the rates of change in the annual cycles of several meteorological parameters such as temperature, radiation, humidity, and rainfall.
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Affiliation(s)
- Nicolas Bruffaerts
- Service Mycology & Aerobiology, Scientific Institute of Public Health, Rue Wytsmanstraat 14, 1050, Brussels, Belgium.
| | - Tom De Smedt
- Service Health & Environment, Scientific Institute of Public Health, Brussels, Belgium
- P-95, Heverlee, Belgium
| | - Andy Delcloo
- Ozone, UV and Aerosols Group, Royal Meteorological Institute of Belgium, Brussels, Belgium
| | - Koen Simons
- Service Health & Environment, Scientific Institute of Public Health, Brussels, Belgium
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Lucie Hoebeke
- Service Mycology & Aerobiology, Scientific Institute of Public Health, Rue Wytsmanstraat 14, 1050, Brussels, Belgium
| | - Caroline Verstraeten
- Service Mycology & Aerobiology, Scientific Institute of Public Health, Rue Wytsmanstraat 14, 1050, Brussels, Belgium
| | - An Van Nieuwenhuyse
- Service Health & Environment, Scientific Institute of Public Health, Brussels, Belgium
| | - Ann Packeu
- Service Mycology & Aerobiology, Scientific Institute of Public Health, Rue Wytsmanstraat 14, 1050, Brussels, Belgium
| | - Marijke Hendrickx
- Service Mycology & Aerobiology, Scientific Institute of Public Health, Rue Wytsmanstraat 14, 1050, Brussels, Belgium
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Bruffaerts N, De Smedt T, Delcloo A, Simons K, Hoebeke L, Verstraeten C, Van Nieuwenhuyse A, Packeu A, Hendrickx M. Comparative long-term trend analysis of daily weather conditions with daily pollen concentrations in Brussels, Belgium. Int J Biometeorol 2018. [PMID: 29064036 DOI: 10.1007/s00484-017-1457-3)] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A clear rise in seasonal and annual temperatures, a gradual increase of total radiation, and a relative trend of change in seasonal precipitation have been observed for the last four decades in Brussels (Belgium). These local modifications may have a direct and indirect public health impact by altering the timing and intensity of allergenic pollen seasons. In this study, we assessed the statistical correlations (Spearman's test) between pollen concentration and meteorological conditions by using long-term daily datasets of 11 pollen types (8 trees and 3 herbaceous plants) and 10 meteorological parameters observed in Brussels between 1982 and 2015. Furthermore, we analyzed the rate of change in the annual cycle of the same selected pollen types by the Mann-Kendall test. We revealed an overall trend of increase in daily airborne tree pollen (except for the European beech tree) and an overall trend of decrease in daily airborne pollen from herbaceous plants (except for Urticaceae). These results revealed an earlier onset of the flowering period for birch, oak, ash, plane, grasses, and Urticaceae. Finally, the rates of change in pollen annual cycles were shown to be associated with the rates of change in the annual cycles of several meteorological parameters such as temperature, radiation, humidity, and rainfall.
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Affiliation(s)
- Nicolas Bruffaerts
- Service Mycology & Aerobiology, Scientific Institute of Public Health, Rue Wytsmanstraat 14, 1050, Brussels, Belgium.
| | - Tom De Smedt
- Service Health & Environment, Scientific Institute of Public Health, Brussels, Belgium
- P-95, Heverlee, Belgium
| | - Andy Delcloo
- Ozone, UV and Aerosols Group, Royal Meteorological Institute of Belgium, Brussels, Belgium
| | - Koen Simons
- Service Health & Environment, Scientific Institute of Public Health, Brussels, Belgium
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Lucie Hoebeke
- Service Mycology & Aerobiology, Scientific Institute of Public Health, Rue Wytsmanstraat 14, 1050, Brussels, Belgium
| | - Caroline Verstraeten
- Service Mycology & Aerobiology, Scientific Institute of Public Health, Rue Wytsmanstraat 14, 1050, Brussels, Belgium
| | - An Van Nieuwenhuyse
- Service Health & Environment, Scientific Institute of Public Health, Brussels, Belgium
| | - Ann Packeu
- Service Mycology & Aerobiology, Scientific Institute of Public Health, Rue Wytsmanstraat 14, 1050, Brussels, Belgium
| | - Marijke Hendrickx
- Service Mycology & Aerobiology, Scientific Institute of Public Health, Rue Wytsmanstraat 14, 1050, Brussels, Belgium
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Aerts R, Joly L, Szternfeld P, Tsilikas K, De Cremer K, Castelain P, Aerts JM, Van Orshoven J, Somers B, Hendrickx M, Andjelkovic M, Van Nieuwenhuyse A. Silicone Wristband Passive Samplers Yield Highly Individualized Pesticide Residue Exposure Profiles. Environ Sci Technol 2018; 52:298-307. [PMID: 29185731 DOI: 10.1021/acs.est.7b05039] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Monitoring human exposure to pesticides and pesticide residues (PRs) remains crucial for informing public health policies, despite strict regulation of plant protection product and biocide use. We used 72 low-cost silicone wristbands as noninvasive passive samplers to assess cumulative 5-day exposure of 30 individuals to polar PRs. Ethyl acetate extraction and LC-MS/MS analysis were used for the identification of PRs. Thirty-one PRs were detected of which 15 PRs (48%) were detected only in worn wristbands, not in environmental controls. The PRs included 16 fungicides (52%), 8 insecticides (26%), 2 herbicides (6%), 3 pesticide derivatives (10%), 1 insect repellent (3%), and 1 pesticide synergist (3%). Five detected pesticides were not approved for plant protection use in the EU. Smoking and dietary habits that favor vegetable consumption were associated with higher numbers and higher cumulative concentrations of PRs in wristbands. Wristbands featured unique PR combinations. Our results suggest both environment and diet contributed to PR exposure in our study group. Silicone wristbands could serve as sensitive passive samplers to screen population-wide cumulative dietary and environmental exposure to authorized, unauthorized and banned pesticides.
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Affiliation(s)
- Raf Aerts
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
| | - Laure Joly
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
| | - Philippe Szternfeld
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
| | - Khariklia Tsilikas
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
| | - Koen De Cremer
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
| | - Philippe Castelain
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
| | - Jean-Marie Aerts
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
| | - Jos Van Orshoven
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
| | - Ben Somers
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
| | - Marijke Hendrickx
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
| | - Mirjana Andjelkovic
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
| | - An Van Nieuwenhuyse
- Scientific Service Health and Environment, ‡Scientific Service Chemical Residues and Contaminants, §Operational Directorate Food, Medicines and Consumer Safety, £Scientific Service Toxicology, and ∥Scientific Service Mycology and Aerobiology, Scientific Institute of Public Health (WIV-ISP) , Brussels, Belgium
- Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, #Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), and ∇Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium
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Goemaere B, Becker P, Van Wijngaerden E, Maertens J, Spriet I, Hendrickx M, Lagrou K. Increasing candidaemia incidence from 2004 to 2015 with a shift in epidemiology in patients preexposed to antifungals. Mycoses 2017; 61:127-133. [PMID: 29024057 DOI: 10.1111/myc.12714] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [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: 08/24/2017] [Revised: 10/04/2017] [Accepted: 10/06/2017] [Indexed: 11/30/2022]
Abstract
Candidaemia is an important health problem in immunocompromised patients with an epidemiology varying with region, period and patient population involved. The occurrence of candidaemia and the associated species distribution over a 12-year period at a large tertiary care centre in Belgium were analysed. The trend in incidence in the intensive care units (ICUs) and non-ICUs was investigated as well as the influence of antifungal exposure on the species distribution. From 2004 until 2015, 865 candidaemia episodes occurred in 826 patients at the University Hospitals Leuven. Candida albicans (59%) remained the most important cause of candidaemia, followed by C. glabrata (22.4%) and C. parapsilosis (8%). The mean incidence in the whole hospital was 1.48 per 10 000 patient days (PD). The incidence in ICUs increased reaching up to 10.7 per 10 000 PD whereas in the non-ICUs, the incidence decreased. Prior exposure to fluconazole and echinocandins was associated with candidaemia caused by less susceptible species. Candidaemia incidence increased in the whole hospital, driven by ICUs. Surveillance of candidaemia epidemiology on a local scale is of high value to guide empirical treatment strategies.
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Affiliation(s)
- Berdieke Goemaere
- Service of Mycology and Aerobiology, BCCM/IHEM Fungal Collection, Scientific Institute of Public Health, Brussels, Belgium
| | - Pierre Becker
- Service of Mycology and Aerobiology, BCCM/IHEM Fungal Collection, Scientific Institute of Public Health, Brussels, Belgium
| | - Eric Van Wijngaerden
- Department of Microbiology and Immunology, Laboratory for Clinical Infectious and Inflammatory Disorders, University of Leuven, University Hospitals Leuven, Leuven, Belgium
| | - Johan Maertens
- Department of Microbiology and Immunology, Laboratory of Clinical Bacteriology and Mycology, University of Leuven, University Hospitals Leuven, Leuven, Belgium
| | - Isabel Spriet
- Department of Pharmaceutical and Pharmacological Sciences, Clinical Pharmacology and Pharmacotherapy, University of Leuven, University Hospitals Leuven, Leuven, Belgium
| | - Marijke Hendrickx
- Service of Mycology and Aerobiology, BCCM/IHEM Fungal Collection, Scientific Institute of Public Health, Brussels, Belgium
| | - Katrien Lagrou
- Department of Microbiology and Immunology, Laboratory of Clinical Bacteriology and Mycology, University of Leuven, University Hospitals Leuven, Leuven, Belgium
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Normand AC, Cassagne C, Hasseine L, Gari-Toussaint M, Gabriel F, Accoceberry I, Costa D, Bourgeois N, Cassaing S, Nabet C, Bonnal C, Raberin H, Stein M, Surmont I, Pierard D, Djenad F, Donnadieu JL, Piarroux M, Ranque S, Becker P, Hendrickx M, Piarroux R. Identification en ligne des agents fongiques par spectrométrie de masse et détection d’espèces émergentes. J Mycol Med 2017. [DOI: 10.1016/j.mycmed.2017.04.015] [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: 10/18/2022]
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Triest D, Hendrickx M, Piérard D, Piarroux R, Fraselle S, De Cremer K. Proof-of-concept study of a new LC-ESI-MS/MS-based assay to identify Aspergillus spp. in artificially mixed samples using species/genus-specific proteotypic peptides. Mycol Prog 2017. [DOI: 10.1007/s11557-017-1273-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Sikoparija B, Skjøth CA, Celenk S, Testoni C, Abramidze T, Alm Kübler K, Belmonte J, Berger U, Bonini M, Charalampopoulos A, Damialis A, Clot B, Dahl Å, de Weger LA, Gehrig R, Hendrickx M, Hoebeke L, Ianovici N, Kofol Seliger A, Magyar D, Mányoki G, Milkovska S, Myszkowska D, Páldy A, Pashley CH, Rasmussen K, Ritenberga O, Rodinkova V, Rybníček O, Shalaboda V, Šaulienė I, Ščevková J, Stjepanović B, Thibaudon M, Verstraeten C, Vokou D, Yankova R, Smith M. Spatial and temporal variations in airborne Ambrosia pollen in Europe. Aerobiologia (Bologna) 2017; 33:181-189. [PMID: 28579673 PMCID: PMC5432595 DOI: 10.1007/s10453-016-9463-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 10/14/2016] [Indexed: 05/06/2023]
Abstract
The European Commission Cooperation in Science and Technology (COST) Action FA1203 "SMARTER" aims to make recommendations for the sustainable management of Ambrosia across Europe and for monitoring its efficiency and cost-effectiveness. The goal of the present study is to provide a baseline for spatial and temporal variations in airborne Ambrosia pollen in Europe that can be used for the management and evaluation of this noxious plant. The study covers the full range of Ambrosia artemisiifolia L. distribution over Europe (39°N-60°N; 2°W-45°E). Airborne Ambrosia pollen data for the principal flowering period of Ambrosia (August-September) recorded during a 10-year period (2004-2013) were obtained from 242 monitoring sites. The mean sum of daily average airborne Ambrosia pollen and the number of days that Ambrosia pollen was recorded in the air were analysed. The mean and standard deviation (SD) were calculated regardless of the number of years included in the study period, while trends are based on those time series with 8 or more years of data. Trends were considered significant at p < 0.05. There were few significant trends in the magnitude and frequency of atmospheric Ambrosia pollen (only 8% for the mean sum of daily average Ambrosia pollen concentrations and 14% for the mean number of days Ambrosia pollen were recorded in the air). The direction of any trends varied locally and reflected changes in sources of the pollen, either in size or in distance from the monitoring station. Pollen monitoring is important for providing an early warning of the expansion of this invasive and noxious plant.
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Affiliation(s)
- B. Sikoparija
- BioSense Institute - Research Institute for Information Technologies in Biosystems, University of Novi Sad, Novi Sad, Serbia
| | - C. A. Skjøth
- National Pollen and Aerobiology Unit, Institute of Science and the Environment, University of Worcester, Henwick Grove, Worcester, WR2 6AJ UK
| | - S. Celenk
- Biology Department, Science Faculty, Uludağ University, Bursa, Turkey
| | - C. Testoni
- Local Health Authority Milano Città Metropolitana, Milan, Italy
| | - T. Abramidze
- Center of Allergy and Immunology, Tbilisi, Georgia
| | - K. Alm Kübler
- Swedish Museum of Natural History, Stockholm, Sweden
| | - J. Belmonte
- Institute of Environmental Science and Technology (ICTA), Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
- Departament de Biologia Animal, Biologia Vegetal i Ecologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - U. Berger
- Department of Oto-Rhino-Laryngology, Medical University of Vienna, Vienna, Austria
| | - M. Bonini
- Local Health Authority Milano Città Metropolitana, Milan, Italy
| | - A. Charalampopoulos
- Department of Ecology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - A. Damialis
- Department of Ecology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
- Chair and Institute of Environmental Medicine, UNIKA-T, Technical University of Munich and Helmholtz Zentrum München - German Research Center for Environmental Health, Augsburg, Germany
| | - B. Clot
- Federal Office of Meteorology and Climatology MeteoSwiss, Zurich, Switzerland
| | - Å. Dahl
- Department of Plant and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - L. A. de Weger
- Department of Pulmonology, Leiden University Medical Center, Leiden, The Netherlands
| | - R. Gehrig
- Federal Office of Meteorology and Climatology MeteoSwiss, Zurich, Switzerland
| | - M. Hendrickx
- Belgian Aerobiology Network, Scientific Institute of Public Health, Brussels, Belgium
| | - L. Hoebeke
- Belgian Aerobiology Network, Scientific Institute of Public Health, Brussels, Belgium
| | - N. Ianovici
- Faculty of Chemistry-Biology-Geography, West University of Timisoara, Timisoara, Romania
| | - A. Kofol Seliger
- Institute of Public Health of the Republic of Slovenia, Ljubljana, Slovenia
| | - D. Magyar
- National Public Health Center, Budapest, Hungary
| | - G. Mányoki
- National Public Health Center, Budapest, Hungary
| | - S. Milkovska
- Institute of Occupational Health - WHO Collaborating Center, Skopje, Republic of Macedonia
| | - D. Myszkowska
- Department of Clinical and Environmental Allergology, Jagiellonian University Medical College, Kraków, Poland
| | - A. Páldy
- National Public Health Center, Budapest, Hungary
| | - C. H. Pashley
- Institute for Lung Health, Department of Infection, Immunity & Inflammation, University of Leicester, Leicester, UK
| | | | - O. Ritenberga
- Faculty of Geography and Earth Sciences, University of Latvia, Riga, Latvia
| | - V. Rodinkova
- Vinnitsa National Pirogov Memorial Medical University, Vinnitsa, Ukraine
| | - O. Rybníček
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - V. Shalaboda
- V. F. Kuprevich Institute for Experimental Botany of the NAS of Belarus, Minsk, Belarus
| | - I. Šaulienė
- Department of Environmental Research, Siauliai University, Šiauliai, Lithuania
| | - J. Ščevková
- Faculty of Natural Sciences, Comenius University Bratislava, Bratislava, Slovakia
| | - B. Stjepanović
- Institute of Public Health “Dr Andrija Štampar”, Zagreb, Croatia
| | - M. Thibaudon
- Réseau National de Surveillance Aérobiologique (R.N.S.A.), Brussieu, France
| | - C. Verstraeten
- Belgian Aerobiology Network, Scientific Institute of Public Health, Brussels, Belgium
| | - D. Vokou
- Department of Ecology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - R. Yankova
- Clinical Center of Allergology, University Hospital Sofia, Sofia, Bulgaria
| | - M. Smith
- Institute of Science and the Environment, University of Worcester, Henwick Grove, Worcester, WR2 6AJ UK
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Affiliation(s)
- David Triest
- BCCM/IHEM Collection of Biomedical Fungi, Service of Mycology and Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
| | - Marijke Hendrickx
- BCCM/IHEM Collection of Biomedical Fungi, Service of Mycology and Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
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36
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de Hoog GS, Dukik K, Monod M, Packeu A, Stubbe D, Hendrickx M, Kupsch C, Stielow JB, Freeke J, Göker M, Rezaei-Matehkolaei A, Mirhendi H, Gräser Y. Toward a Novel Multilocus Phylogenetic Taxonomy for the Dermatophytes. Mycopathologia 2016; 182:5-31. [PMID: 27783317 PMCID: PMC5283515 DOI: 10.1007/s11046-016-0073-9] [Citation(s) in RCA: 345] [Impact Index Per Article: 43.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 09/28/2016] [Indexed: 12/16/2022]
Abstract
Type and reference strains of members of the onygenalean family Arthrodermataceae have been sequenced for rDNA ITS and partial LSU, the ribosomal 60S protein, and fragments of β-tubulin and translation elongation factor 3. The resulting phylogenetic trees showed a large degree of correspondence, and topologies matched those of earlier published phylogenies demonstrating that the phylogenetic representation of dermatophytes and dermatophyte-like fungi has reached an acceptable level of stability. All trees showed Trichophyton to be polyphyletic. In the present paper, Trichophyton is restricted to mainly the derived clade, resulting in classification of nearly all anthropophilic dermatophytes in Trichophyton and Epidermophyton, along with some zoophilic species that regularly infect humans. Microsporum is restricted to some species around M. canis, while the geophilic species and zoophilic species that are more remote from the human sphere are divided over Arthroderma, Lophophyton and Nannizzia. A new genus Guarromyces is proposed for Keratinomyces ceretanicus. Thirteen new combinations are proposed; in an overview of all described species it is noted that the largest number of novelties was introduced during the decades 1920–1940, when morphological characters were used in addition to clinical features. Species are neo- or epi-typified where necessary, which was the case in Arthroderma curreyi, Epidermophyton floccosum, Lophophyton gallinae, Trichophyton equinum, T. mentagrophytes, T. quinckeanum, T. schoenleinii, T. soudanense, and T. verrucosum. In the newly proposed taxonomy, Trichophyton contains 16 species, Epidermophyton one species, Nannizzia 9 species, Microsporum 3 species, Lophophyton 1 species, Arthroderma 21 species and Ctenomyces 1 species, but more detailed studies remain needed to establish species borderlines. Each species now has a single valid name. Two new genera are introduced: Guarromyces and Paraphyton. The number of genera has increased, but species that are relevant to routine diagnostics now belong to smaller groups, which enhances their identification.
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Affiliation(s)
- G Sybren de Hoog
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands. .,Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands. .,Basic Pathology Department, Federal University of Paraná State, Curitiba, Paraná, Brazil. .,Peking University Health Science Center, Research Center for Medical Mycology, Beijing, China. .,Shanghai Institute of Medical Mycology, Changzheng Hospital, Second Military Medical University, Shanghai, China. .,Biological Sciences Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Karolina Dukik
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands.,Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
| | - Michel Monod
- Department of Dermatology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Ann Packeu
- Mycology and Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
| | - Dirk Stubbe
- Mycology and Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
| | - Marijke Hendrickx
- Mycology and Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
| | - Christiane Kupsch
- Institute of Microbiology and Hygiene, University Medicine Berlin - Charité, Berlin, Germany
| | - J Benjamin Stielow
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands.,Thermo Fisher Scientific, Landsmeer, The Netherlands
| | - Joanna Freeke
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands.,Thermo Fisher Scientific, Landsmeer, The Netherlands
| | - Markus Göker
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Brunswick, Germany
| | - Ali Rezaei-Matehkolaei
- Health Research Institute, Infectious and Tropical Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Medical Mycology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hossein Mirhendi
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Yvonne Gräser
- Institute of Microbiology and Hygiene, University Medicine Berlin - Charité, Berlin, Germany.
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Nyazika TK, Hagen F, Machiridza T, Kutepa M, Masanganise F, Hendrickx M, Boekhout T, Magombei-Majinjiwa T, Siziba N, Chin'ombe N, Mateveke K, Meis JF, Robertson VJ. Cryptococcus neoformans population diversity and clinical outcomes of HIV-associated cryptococcal meningitis patients in Zimbabwe. J Med Microbiol 2016; 65:1281-1288. [PMID: 27638836 DOI: 10.1099/jmm.0.000354] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
HIV and cryptococcal meningitis co-infection is a major public health problem in most developing countries. Cryptococcus neoformans sensu stricto is responsible for the majority of HIV-associated cryptococcosis cases in sub-Saharan Africa. Despite the available information, little is known about cryptococcal population diversity and its association with clinical outcomes in patients with HIV-associated cryptococcal meningitis in sub-Saharan Africa. In a prospective cohort, we investigated the prevalence and clinical outcome of Cryptococcusneoformans sensu stricto meningitis among HIV-infected patients in Harare, Zimbabwe, and compared the genotypic diversity of the isolates with those collected from other parts of Africa. Molecular typing was done using amplified fragment length polymorphism genotyping and microsatellite typing. The majority of patients with HIV-associated Cryptococcusneoformans sensu stricto meningitis in this cohort were males (n=33/55; 60.0 %). The predominant Cryptococcus neoformans sensu stricto genotype among the Zimbabwean isolates was genotype AFLP1/VNI (n=40; 72.7 %), followed by AFLP1A/VNB/VNII (n=8; 14.6 %), and AFLP1B/VNII was the least isolated (n=7; 12.7 %). Most of the isolates were mating-type α (n=51; 92.7 %), and only four (7.3 %) were mating-type a. Overall in-hospital mortality was 55.6 % (n=30), and no difference between infecting genotype and clinical outcome of patient (P=0.73) or CD4+ counts (P=0.79) was observed. Zimbabwean Cryptococcusneoformans sensu stricto genotypes demonstrated a high level of genetic diversity by microsatellite typing, and 51 genotypes within the main molecular types AFLP1/VNI, AFLP1A/VNB/VNII and AFLP1B/VNII were identified. This study demonstrates that Cryptococcusneoformans sensu stricto in Zimbabwe has a high level of genetic diversity when compared to other regional isolates.
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Affiliation(s)
- Tinashe K Nyazika
- Department of Medical Microbiology, College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe.,Department of Medical Microbiology and Infectious Diseases, Canisius-Wilhelmina Hospital (CWZ), Nijmegen, The Netherlands.,Department of Chemical Pathology, College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - Ferry Hagen
- Department of Medical Microbiology and Infectious Diseases, Canisius-Wilhelmina Hospital (CWZ), Nijmegen, The Netherlands
| | - Tendai Machiridza
- Department of Medicine, College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - Melody Kutepa
- Parirenyatwa Group of Hospitals, Causeway, Harare, Zimbabwe
| | | | - Marijke Hendrickx
- Section Mycology and Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
| | - Teun Boekhout
- Department of Basidiomycetous & Yeast Research, CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands
| | - Tricia Magombei-Majinjiwa
- Department of Medical Microbiology, College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - Nonthokozo Siziba
- Department of Medical Microbiology, College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - Nyasha Chin'ombe
- Department of Medical Microbiology, College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - Kudzanai Mateveke
- Research Support Centre, College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - Jacques F Meis
- Department of Medical Microbiology and Infectious Diseases, Canisius-Wilhelmina Hospital (CWZ), Nijmegen, The Netherlands.,Radboudumc/CWZ Centre of Expertise in Mycology, Nijmegen, The Netherlands
| | - Valerie J Robertson
- Department of Medical Microbiology, College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe
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Triest D, De Cremer K, Piérard D, Hendrickx M. Unique Phylogenetic Lineage Found in the Fusarium-like Clade after Re-examining BCCM/IHEM Fungal Culture Collection Material. Mycobiology 2016; 44:121-130. [PMID: 27790062 PMCID: PMC5078124 DOI: 10.5941/myco.2016.44.3.121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 06/07/2016] [Accepted: 07/12/2016] [Indexed: 06/06/2023]
Abstract
Recently, the Fusarium genus has been narrowed based upon phylogenetic analyses and a Fusarium-like clade was adopted. The few species of the Fusarium-like clade were moved to new, re-installed or existing genera or provisionally retained as "Fusarium." Only a limited number of reference strains and DNA marker sequences are available for this clade and not much is known about its actual species diversity. Here, we report six strains, preserved by the Belgian fungal culture collection BCCM/IHEM as a Fusarium species, that belong to the Fusarium-like clade. They showed a slow growth and produced pionnotes, typical morphological characteristics of many Fusarium-like species. Multilocus sequencing with comparative sequence analyses in GenBank and phylogenetic analyses, using reference sequences of type material, confirmed that they were indeed member of the Fusarium-like clade. One strain was identified as "Fusarium" ciliatum whereas another strain was identified as Fusicolla merismoides. The four remaining strains were shown to represent a unique phylogenetic lineage in the Fusarium-like clade and were also found morphologically distinct from other members of the Fusarium-like clade. Based upon phylogenetic considerations, a new genus, Pseudofusicolla gen. nov., and a new species, Pseudofusicolla belgica sp. nov., were installed for this lineage. A formal description is provided in this study. Additional sampling will be required to gather isolates other than the historical strains presented in the present study as well as to further reveal the actual species diversity in the Fusarium-like clade.
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Affiliation(s)
- David Triest
- BCCM/IHEM Collection of Biomedical Fungi, Service of Mycology & Aerobiology, Scientific Institute of Public Health, 1050 Brussels, Belgium
| | - Koen De Cremer
- Service of Health & Environment, Scientific Institute of Public Health, 1050 Brussels, Belgium
| | - Denis Piérard
- Department of Microbiology & Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - Marijke Hendrickx
- BCCM/IHEM Collection of Biomedical Fungi, Service of Mycology & Aerobiology, Scientific Institute of Public Health, 1050 Brussels, Belgium
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39
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Normand A, Djenad F, Becker P, Gabriel F, Gary-Toussaint M, Cassagne C, Gautier M, Ranque S, Accoceberry I, Marty P, Hendrickx M, Piarroux R. Identification en ligne des moisissures et des dermatophytes. J Mycol Med 2016. [DOI: 10.1016/j.mycmed.2016.04.081] [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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40
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Guilbert A, Simons K, Hoebeke L, Packeu A, Hendrickx M, De Cremer K, Buyl R, Coomans D, Van Nieuwenhuyse A. Short-Term Effect of Pollen and Spore Exposure on Allergy Morbidity in the Brussels-Capital Region. Ecohealth 2016; 13:303-15. [PMID: 27174430 PMCID: PMC4996865 DOI: 10.1007/s10393-016-1124-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 03/21/2016] [Accepted: 04/07/2016] [Indexed: 05/21/2023]
Abstract
Belgium is among the European countries that are the most affected by allergic rhinitis. Pollen grains and fungal spores represent important triggers of symptoms. However, few studies have investigated their real link with disease morbidity over several years. Based on aeroallergen counts and health insurance datasets, the relationship between daily changes in pollen, fungal spore concentrations and daily changes in reimbursable systemic antihistamine sales has been investigated between 2005 and 2011 in the Brussels-Capital Region. A Generalized Linear Model was used and adjusted for air pollution, meteorological conditions, flu, seasonal component and day of the week. We observed an augmentation in drug sales despite no significant increase in allergen levels in the long term. The relative risk of buying allergy medications associated with an interquartile augmentation in pollen distributions increased significantly for Poaceae, Betula, Carpinus, Fraxinus and Quercus. Poaceae affected the widest age group and led to the highest increase of risk which reached 1.13 (95% CI [1.11-1.14]) among the 19- to 39-year-old men. Betula showed the second most consistent relationship across age groups. Clear identification of the provoking agents may improve disease management by customizing prevention programmes. This work also opens several research perspectives related to impact of climate modification or subpopulation sensitivity.
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Affiliation(s)
- Ariane Guilbert
- Health and Environment Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050, Brussels, Belgium.
| | - Koen Simons
- Health and Environment Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050, Brussels, Belgium
- Department of Biostatistics and Medical Informatics - Public Health, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090, Brussels, Belgium
| | - Lucie Hoebeke
- Mycology and Aerobiology Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050, Brussels, Belgium
| | - Ann Packeu
- Mycology and Aerobiology Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050, Brussels, Belgium
| | - Marijke Hendrickx
- Mycology and Aerobiology Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050, Brussels, Belgium
| | - Koen De Cremer
- Health and Environment Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050, Brussels, Belgium
| | - Ronald Buyl
- Department of Biostatistics and Medical Informatics - Public Health, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090, Brussels, Belgium
| | - Danny Coomans
- Department of Biostatistics and Medical Informatics - Public Health, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090, Brussels, Belgium
| | - An Van Nieuwenhuyse
- Health and Environment Unit, Scientific Institute of Public Health, Rue Juliette Wytsmanstraat 14, 1050, Brussels, Belgium
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Triest D, Piérard D, De Cremer K, Hendrickx M. Fusarium musae infected banana fruits as potential source of human fusariosis: May occur more frequently than we might think and hypotheses about infection. Commun Integr Biol 2016; 9:e1162934. [PMID: 27195070 PMCID: PMC4857776 DOI: 10.1080/19420889.2016.1162934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 02/29/2016] [Accepted: 02/29/2016] [Indexed: 12/26/2022] Open
Abstract
The banana fruit infecting fungus Fusarium musae was originally known as a distinct population within Fusarium verticillioides. However, recently, Fusarium musae was installed as a separate species and the first cases of human infection associated with Fusarium musae were found. In this article, we report an additional survey indicating that human pathogenic Fusarium musae infections may occur more frequently than we might think. Moreover, we evaluate the hypotheses on how infection can be acquired. A first hypothesis is that banana fruits act as carriers of Fusarium musae spores and thereby be the source of human infection with Fusarium musae. Acquisition is likely to be caused through contact with Fusarium musae contaminated banana fruits, either being imported or after traveling of the patient to a banana-producing country. An alternative hypothesis is that Fusarium musae is not only present on banana fruits, but also on other plant hosts or environmental sources.
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Affiliation(s)
- David Triest
- Service of Mycology and Aerobiology, BCCM/IHEM Fungal Collection, Scientific Institute of Public Health , Brussels, Belgium
| | - Denis Piérard
- Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel , Brussels, Belgium
| | - Koen De Cremer
- Service of Health and Environment, Scientific Institute of Public Health , Brussels, Belgium
| | - Marijke Hendrickx
- Service of Mycology and Aerobiology, BCCM/IHEM Fungal Collection, Scientific Institute of Public Health , Brussels, Belgium
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42
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Gautier M, Normand AC, L'Ollivier C, Cassagne C, Reynaud-Gaubert M, Dubus JC, Brégeon F, Hendrickx M, Gomez C, Ranque S, Piarroux R. Aspergillus tubingensis: a major filamentous fungus found in the airways of patients with lung disease. Med Mycol 2016; 54:459-70. [PMID: 26773134 DOI: 10.1093/mmy/myv118] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 12/18/2015] [Indexed: 11/13/2022] Open
Abstract
The black Aspergillus group comprises A. niger and 18 other species, which are morphologically indistinguishable. Among this species subset, A. tubingensis, described in less than 30 human cases before 2014, is primarily isolated from ear, nose, and throat samples. Recently, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry has emerged as a powerful technique to identify microbes in diagnostic settings. We applied this method to identify 1,720 filamentous fungi routinely isolated from clinical samples our laboratory over a two-year study period. Accordingly, we found 85 isolates of A. niger, 58 of A. tubingensis, and six other black Aspergillus (4 A. carbonarius and 2 A. japonicus). A. tubingensis was the fifth most frequent mold isolated in our mycology laboratory, primarily isolated from respiratory samples (40/58 isolates). In this study, we mainly aimed to describe the clinical pattern of Aspergillus tubingensisWe analyzed the clinical features of the patients in whom A. tubingensis had been isolated from 40 respiratory samples. Thirty patients suffered from cystic fibrosis, chronic obstructive pulmonary disease or other types of chronic respiratory failure. Strikingly, 20 patients were experiencing respiratory acute exacerbation at the time the sample was collected. Antifungal susceptibility testing of 36 A. tubingensis isolates showed lower amphotericin B MICs (P < 10(-4)) and higher itraconazole and voriconazole MICs (P < 10(-4) and P = .0331, respectively) compared with 36 A. niger isolates. Further studies are required to better establish the role that this fungus plays in human diseases, especially in the context of cystic fibrosis and chronic pulmonary diseases.
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Affiliation(s)
- Magali Gautier
- Parasitology and Mycology, Assistance Publique-Hôpitaux de Marseille, CHU Timone-Adultes, 13385 Marseilles CEDEX 5, France
| | - Anne-Cécile Normand
- Parasitology and Mycology, Assistance Publique-Hôpitaux de Marseille, CHU Timone-Adultes, 13385 Marseilles CEDEX 5, France
| | - Coralie L'Ollivier
- Parasitology and Mycology, Assistance Publique-Hôpitaux de Marseille, CHU Timone-Adultes, 13385 Marseilles CEDEX 5, France
| | - Carole Cassagne
- Parasitology and Mycology, Assistance Publique-Hôpitaux de Marseille, CHU Timone-Adultes, 13385 Marseilles CEDEX 5, France
| | - Martine Reynaud-Gaubert
- Department of Respiratory diseases, CF Adult Centre and Lung Transplant Team; Assistance Publique-Hôpitaux de Marseille, CHU Nord, 13015 Marseilles, France URMITE CNRS IRD UMR 6236, IHU Méditerranée Infection, Aix-Marseille University, France
| | - Jean-Christophe Dubus
- Pediatric Pulmonology and CF Centre, Assistance Publique-Hôpitaux de Marseille, CHU Timone-Enfants, 13385 Marseilles CEDEX 5, France
| | - Fabienne Brégeon
- URMITE CNRS IRD UMR 6236, IHU Méditerranée Infection, Aix-Marseille University, France Service d'Explorations Fonctionnelles Respiratoires, Assistance Publique-Hôpitaux de Marseille, CHU Nord, 13015 Marseilles, France
| | - Marijke Hendrickx
- BCCM/IHEM: Scientific Institute of Public Health, Mycology and Aerobiology Section, Brussels, Belgium
| | - Carine Gomez
- Department of Respiratory diseases, CF Adult Centre and Lung Transplant Team; Assistance Publique-Hôpitaux de Marseille, CHU Nord, 13015 Marseilles, France URMITE CNRS IRD UMR 6236, IHU Méditerranée Infection, Aix-Marseille University, France
| | - Stéphane Ranque
- Parasitology and Mycology, Assistance Publique-Hôpitaux de Marseille, CHU Timone-Adultes, 13385 Marseilles CEDEX 5, France Aix-Marseille University, UMR MD3 IP-TPT, 13885 Marseilles, France
| | - Renaud Piarroux
- Parasitology and Mycology, Assistance Publique-Hôpitaux de Marseille, CHU Timone-Adultes, 13385 Marseilles CEDEX 5, France Aix-Marseille University, UMR MD3 IP-TPT, 13885 Marseilles, France
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43
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Al-Hatmi AMS, Normand AC, van Diepeningen AD, Hendrickx M, de Hoog GS, Piarroux R. Rapid identification of clinical members of Fusarium fujikuroi complex using MALDI-TOF MS. Future Microbiol 2015; 10:1939-52. [DOI: 10.2217/fmb.15.108] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Aim: To develop the matrix-assisted laser desorption ionization mass spectrometry (MALDI-TOF MS) method for identification of Fusarium species within Fusarium fujikuroi complex for use in clinical microbiology laboratories. Materials & methods: A total of 24 reference and 60 clinical and environmental isolates belonging to the F. fujikuroi complex were subjected to MALDI-TOF MS identification. Protein extracts of Fusarium isolates were obtained using formic acid extraction. Multilocus sequence analysis was used as a gold standard. Results: The MALDI-TOF MS Biotyper correctly identified 93.6% of the strains down to the species level, while the remaining isolates (6.4%) were identified at the genus level when using scores of ≥ 2.0 as cut-off values. Correct identification was obtained despite large intraspecific heterogeneities in MALDI-TOF spectra. Conclusion: MALDI-TOF MS is a rapid identification tool for the recognition of species within F. fujikuroi complex, provided a database is available.
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Affiliation(s)
- Abdullah MS Al-Hatmi
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands
- Institute of Biodiversity & Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
- Directorate General of Health Services, Ministry of Health, Ibri Hospital, Ibri, Oman
| | - Anne-Cécile Normand
- Laboratoire de Parasitologie-Mycologie, CHU Timone, Université de la Méditerranée, Marseille, France
| | | | - Marijke Hendrickx
- BCCM/IHEM: Scientific Institute of Public Health, Mycology & Aerobiology Section, Bruxelles, Belgium
| | - G Sybren de Hoog
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands
- Institute of Biodiversity & Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
- Peking University Health Science Center, Research Center for Medical Mycology, Beijing, China
- Shanghai Institute of Medical Mycology, Changzheng Hospital, Second Military Medical University, Shanghai, China
- King Abdulaziz University, Jeddah, Saudi Arabia
| | - Renaud Piarroux
- Laboratoire de Parasitologie-Mycologie, CHU Timone, Université de la Méditerranée, Marseille, France
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Becker PT, Stubbe D, Claessens J, Roesems S, Bastin Y, Planard C, Cassagne C, Piarroux R, Hendrickx M. Quality control in culture collections: Confirming identity of filamentous fungi by MALDI-TOF MS. MYCOSCIENCE 2015. [DOI: 10.1016/j.myc.2014.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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45
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Dhieb C, Normand AC, Al-Yasiri M, Chaker E, El Euch D, Vranckx K, Hendrickx M, Sadfi N, Piarroux R, Ranque S. MALDI-TOF typing highlights geographical and fluconazole resistance clusters in Candida glabrata. Med Mycol 2015; 53:462-9. [PMID: 25841053 DOI: 10.1093/mmy/myv013] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [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: 09/19/2014] [Accepted: 02/09/2015] [Indexed: 12/12/2022] Open
Abstract
Utilizing matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectra for Candida glabrata typing would be a cost-effective and easy-to-use alternative to classical DNA-based typing methods. This study aimed to use MALDI-TOF for the typing of C. glabrata clinical isolates from various geographical origins and test its capacity to differentiate between fluconazole-sensitive and -resistant strains.Both microsatellite length polymorphism (MLP) and MALDI-TOF mass spectra of 58 C. glabrata isolates originating from Marseilles (France) and Tunis (Tunisia) as well as collection strains from diverse geographic origins were analyzed. The same analysis was conducted on a subset of C. glabrata isolates that were either susceptible (MIC ≤ 8 mg/l) or resistant (MIC ≥ 64 mg/l) to fluconazole.According to the seminal results, both MALDI-TOF and MLP classifications could highlight C. glabrata population structures associated with either geographical dispersal barriers (p < 10(-5)) or the selection of antifungal drug resistance traits (<10(-5)).In conclusion, MALDI-TOF geographical clustering was congruent with MPL genotyping and highlighted a significant population genetic structure according to fluconazole susceptibility in C. glabrata. Furthermore, although MALDI-TOF and MLP resulted in distinct classifications, MALDI-TOF also classified the isolates with respect to their fluconazole susceptibility profile. Further prospective studies are required to evaluate the capacity of MALDI-TOF typing to investigate C. glabrata infection outbreaks and predict the antifungal susceptibility profile of clinical laboratory isolates.
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Affiliation(s)
- C Dhieb
- Laboratoire des Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis, 2092 Tunis, Tunisia
| | - A C Normand
- Parasitolgy-Mycology, APHM, CHU Timone, Marseille, France
| | - M Al-Yasiri
- Aix Marseille Université, IP-TPT UMR MD3, 13005, Marseille, France
| | - E Chaker
- Laboratoire de Parasitologie, Hôpital La Rabta, Tunis, Tunisia
| | - D El Euch
- Service de Dermatologie et de Vénéréologie, Hôpital La Rabta, Tunis, Tunisia
| | - K Vranckx
- Applied Maths NV, 9830, Sint-Martens-Latem, Belgium
| | - M Hendrickx
- BCCM/IHEM: Scientific Institute of Public Health, Mycology and Aerobiology Section, Brussels, Belgium
| | - N Sadfi
- Laboratoire des Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis, 2092 Tunis, Tunisia
| | - R Piarroux
- Parasitolgy-Mycology, APHM, CHU Timone, Marseille, France Aix Marseille Université, IP-TPT UMR MD3, 13005, Marseille, France
| | - S Ranque
- Parasitolgy-Mycology, APHM, CHU Timone, Marseille, France Aix Marseille Université, IP-TPT UMR MD3, 13005, Marseille, France
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Irinyi L, Serena C, Garcia-Hermoso D, Arabatzis M, Desnos-Ollivier M, Vu D, Cardinali G, Arthur I, Normand AC, Giraldo A, da Cunha KC, Sandoval-Denis M, Hendrickx M, Nishikaku AS, de Azevedo Melo AS, Merseguel KB, Khan A, Parente Rocha JA, Sampaio P, da Silva Briones MR, e Ferreira RC, de Medeiros Muniz M, Castañón-Olivares LR, Estrada-Barcenas D, Cassagne C, Mary C, Duan SY, Kong F, Sun AY, Zeng X, Zhao Z, Gantois N, Botterel F, Robbertse B, Schoch C, Gams W, Ellis D, Halliday C, Chen S, Sorrell TC, Piarroux R, Colombo AL, Pais C, de Hoog S, Zancopé-Oliveira RM, Taylor ML, Toriello C, de Almeida Soares CM, Delhaes L, Stubbe D, Dromer F, Ranque S, Guarro J, Cano-Lira JF, Robert V, Velegraki A, Meyer W. International Society of Human and Animal Mycology (ISHAM)-ITS reference DNA barcoding database--the quality controlled standard tool for routine identification of human and animal pathogenic fungi. Med Mycol 2015; 53:313-37. [PMID: 25802363 DOI: 10.1093/mmy/myv008] [Citation(s) in RCA: 204] [Impact Index Per Article: 22.7] [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: 12/22/2014] [Accepted: 01/19/2015] [Indexed: 12/13/2022] Open
Abstract
Human and animal fungal pathogens are a growing threat worldwide leading to emerging infections and creating new risks for established ones. There is a growing need for a rapid and accurate identification of pathogens to enable early diagnosis and targeted antifungal therapy. Morphological and biochemical identification methods are time-consuming and require trained experts. Alternatively, molecular methods, such as DNA barcoding, a powerful and easy tool for rapid monophasic identification, offer a practical approach for species identification and less demanding in terms of taxonomical expertise. However, its wide-spread use is still limited by a lack of quality-controlled reference databases and the evolving recognition and definition of new fungal species/complexes. An international consortium of medical mycology laboratories was formed aiming to establish a quality controlled ITS database under the umbrella of the ISHAM working group on "DNA barcoding of human and animal pathogenic fungi." A new database, containing 2800 ITS sequences representing 421 fungal species, providing the medical community with a freely accessible tool at http://www.isham.org/ and http://its.mycologylab.org/ to rapidly and reliably identify most agents of mycoses, was established. The generated sequences included in the new database were used to evaluate the variation and overall utility of the ITS region for the identification of pathogenic fungi at intra-and interspecies level. The average intraspecies variation ranged from 0 to 2.25%. This highlighted selected pathogenic fungal species, such as the dermatophytes and emerging yeast, for which additional molecular methods/genetic markers are required for their reliable identification from clinical and veterinary specimens.
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Affiliation(s)
- Laszlo Irinyi
- Molecular Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology, Sydney Medical School-Westmead Hospital, Marie Bashir Institute for Infectious Diseases and Bioscurity, University of Sydney, Westmead Millennium Institute, Sydney, Australia
| | - Carolina Serena
- Molecular Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology, Sydney Medical School-Westmead Hospital, Marie Bashir Institute for Infectious Diseases and Bioscurity, University of Sydney, Westmead Millennium Institute, Sydney, Australia Unitat de Recerca, Hospital Joan XXIII, Institut de Investigacio Sanitaria Rovira I Virgili (IISPV), Universitat Rovira i Virgili, Tarragona, Spain
| | - Dea Garcia-Hermoso
- Institut Pasteur, National Reference Center for Invasive Mycoses and Antifungals, Molecular Mycology Unit; CNRS URA3012, Paris, France
| | - Michael Arabatzis
- Mycology Research Laboratory, Department of Microbiology, Medical School, the University of Athens Hellenic Collection of Pathogenic Fungi (UOA/HCPF), National and Kapodistrian University of Athens, Athens, Greece
| | - Marie Desnos-Ollivier
- Institut Pasteur, National Reference Center for Invasive Mycoses and Antifungals, Molecular Mycology Unit; CNRS URA3012, Paris, France
| | - Duong Vu
- CBS-KNAW, Fungal Biodiversity Centre, Utrecht, The Netherlands
| | - Gianluigi Cardinali
- Department of Pharmaceutical Sciences-Università degli Studi di Perugia, Perugia, Italy
| | - Ian Arthur
- Mycology Laboratory, Department of Microbiology and Infectious Diseases, PathWest Laboratory Medicine WA, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Anne-Cécile Normand
- Parasitology - Mycology, APHM, CHU Timone-Adultes, Marseille, France; Aix-Marseille University, UMR MD3 IP-TPT, Marseille, France
| | - Alejandra Giraldo
- Unitat de Microbiologia, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain
| | - Keith Cassia da Cunha
- Unitat de Microbiologia, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain
| | - Marcelo Sandoval-Denis
- Unitat de Microbiologia, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain
| | - Marijke Hendrickx
- BCCM/IHEM, Biomedical fungi and yeasts collection, Scientific Institute of Public Health, Brussels, Belgium
| | - Angela Satie Nishikaku
- Laboratório Especial de Micologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Analy Salles de Azevedo Melo
- Laboratório Especial de Micologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Aziza Khan
- Molecular Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology, Sydney Medical School-Westmead Hospital, Marie Bashir Institute for Infectious Diseases and Bioscurity, University of Sydney, Westmead Millennium Institute, Sydney, Australia
| | - Juliana Alves Parente Rocha
- Universidade Federal de Goiás, Instituto de Ciências Biológicas, Laboratório de Biologia Molecular, Goiânia, Goiás, Brazil
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA), Biology Department, School of Sciences, University of Minho, Braga, Portugal
| | - Marcelo Ribeiro da Silva Briones
- Laboratório de Genômica e Biocomplexidade Evolutiva, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Renata Carmona e Ferreira
- Laboratório de Genômica e Biocomplexidade Evolutiva, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Mauro de Medeiros Muniz
- Instituto de Pesquisa Clínica Evandro Chagas (IPEC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - Laura Rosio Castañón-Olivares
- Facultad de Medicina, Departamento de Microbiología y Parasitología (Unidad de Micología), Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Daniel Estrada-Barcenas
- Facultad de Medicina, Departamento de Microbiología y Parasitología (Unidad de Micología), Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Carole Cassagne
- Parasitology - Mycology, APHM, CHU Timone-Adultes, Marseille, France; Aix-Marseille University, UMR MD3 IP-TPT, Marseille, France
| | - Charles Mary
- Parasitology - Mycology, APHM, CHU Timone-Adultes, Marseille, France; Aix-Marseille University, UMR MD3 IP-TPT, Marseille, France
| | - Shu Yao Duan
- Molecular Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology, Sydney Medical School-Westmead Hospital, Marie Bashir Institute for Infectious Diseases and Bioscurity, University of Sydney, Westmead Millennium Institute, Sydney, Australia
| | - Fanrong Kong
- Centre for Infectious Diseases and Microbiology, Westmead Hospital, Westmead, NSW, Australia
| | - Annie Ying Sun
- School of Paediatrics and Reproductive Health, University of Adelaide, Adelaide, SA, Australia; Robinson Institute, University of Adelaide, Adelaide, SA, Australia
| | - Xianyu Zeng
- Centre for Infectious Diseases and Microbiology, Westmead Hospital, Westmead, NSW, Australia
| | - Zuotao Zhao
- Centre for Infectious Diseases and Microbiology, Westmead Hospital, Westmead, NSW, Australia
| | - Nausicaa Gantois
- BDEEP-EA4547, CIIL, Institut Pasteur de Lille, CHU de Lille, Université de Lille2, Lille, France
| | - Françoise Botterel
- Unité de Parasitologie - Mycologie, Dynamyc Team, CHU Henri Mondor, AP-HP, Créteil, France
| | - Barbara Robbertse
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, USA
| | - Conrad Schoch
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, USA
| | - Walter Gams
- CBS-KNAW, Fungal Biodiversity Centre, Utrecht, The Netherlands
| | - David Ellis
- Mycology and Infectious Diseases, SA Pathology, University of Adelaide, Adelaide, SA, Australia
| | - Catriona Halliday
- Centre for Infectious Diseases and Microbiology, Westmead Hospital, Westmead, NSW, Australia
| | - Sharon Chen
- Molecular Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology, Sydney Medical School-Westmead Hospital, Marie Bashir Institute for Infectious Diseases and Bioscurity, University of Sydney, Westmead Millennium Institute, Sydney, Australia Centre for Infectious Diseases and Microbiology, Westmead Hospital, Westmead, NSW, Australia
| | - Tania C Sorrell
- Molecular Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology, Sydney Medical School-Westmead Hospital, Marie Bashir Institute for Infectious Diseases and Bioscurity, University of Sydney, Westmead Millennium Institute, Sydney, Australia
| | - Renaud Piarroux
- Parasitology - Mycology, APHM, CHU Timone-Adultes, Marseille, France; Aix-Marseille University, UMR MD3 IP-TPT, Marseille, France
| | - Arnaldo L Colombo
- Laboratório Especial de Micologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Célia Pais
- Centre of Molecular and Environmental Biology (CBMA), Biology Department, School of Sciences, University of Minho, Braga, Portugal
| | - Sybren de Hoog
- CBS-KNAW, Fungal Biodiversity Centre, Utrecht, The Netherlands
| | | | - Maria Lucia Taylor
- Facultad de Medicina, Departamento de Microbiología y Parasitología (Unidad de Micología), Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Conchita Toriello
- Facultad de Medicina, Departamento de Microbiología y Parasitología (Unidad de Micología), Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Célia Maria de Almeida Soares
- Universidade Federal de Goiás, Instituto de Ciências Biológicas, Laboratório de Biologia Molecular, Goiânia, Goiás, Brazil
| | - Laurence Delhaes
- BDEEP-EA4547, CIIL, Institut Pasteur de Lille, CHU de Lille, Université de Lille2, Lille, France
| | - Dirk Stubbe
- BCCM/IHEM, Biomedical fungi and yeasts collection, Scientific Institute of Public Health, Brussels, Belgium
| | - Françoise Dromer
- Institut Pasteur, National Reference Center for Invasive Mycoses and Antifungals, Molecular Mycology Unit; CNRS URA3012, Paris, France
| | - Stéphane Ranque
- Parasitology - Mycology, APHM, CHU Timone-Adultes, Marseille, France; Aix-Marseille University, UMR MD3 IP-TPT, Marseille, France
| | - Josep Guarro
- Unitat de Microbiologia, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain
| | - Jose F Cano-Lira
- Unitat de Microbiologia, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain
| | - Vincent Robert
- CBS-KNAW, Fungal Biodiversity Centre, Utrecht, The Netherlands
| | - Aristea Velegraki
- Mycology Research Laboratory, Department of Microbiology, Medical School, the University of Athens Hellenic Collection of Pathogenic Fungi (UOA/HCPF), National and Kapodistrian University of Athens, Athens, Greece
| | - Wieland Meyer
- Molecular Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology, Sydney Medical School-Westmead Hospital, Marie Bashir Institute for Infectious Diseases and Bioscurity, University of Sydney, Westmead Millennium Institute, Sydney, Australia
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47
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Dhieb C, Normand AC, L'Ollivier C, Gautier M, Vranckx K, El Euch D, Chaker E, Hendrickx M, Dalle F, Sadfi N, Piarroux R, Ranque S. Comparison of MALDI-TOF mass spectra with microsatellite length polymorphisms in Candida albicans. J Mass Spectrom 2015; 50:371-377. [PMID: 25800019 DOI: 10.1002/jms.3538] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 10/30/2014] [Accepted: 11/02/2014] [Indexed: 06/04/2023]
Abstract
Candida albicans is the most frequent yeast involved in human infections. Its population structure can be divided into several genetic clades, some of which have been associated with antifungal susceptibility. Therefore, detecting and monitoring fungal clones in a routine laboratory setting would be a major epidemiological advance. Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectra results are now widely used as bar codes to identify microorganisms in clinical microbiology laboratories. This study aimed at testing MALDI-TOF mass spectra bar codes to identify clades among a set of C. albicans isolates. Accordingly, 102 clinical strains were genotyped using 10 microsatellite markers and analyzed via MALDI-TOF mass spectrometry. The mass spectra were compared with a reference spectral library including 33 well-characterized collection strains, using a Microflex(TM) system and Biotyper(TM) software, to test the capacity of the spectrum of a given isolate to match with the reference mass spectrum of an isolate from the same genetic clade. Despite high confidence species identification, the spectra failed to significantly match with the corresponding clade (p = 0.74). This was confirmed with the MALDI-TOF spectra similarity dendrogram, in which the strains were dispersed irrespective of their genetic clade. Various attempts to improve intra-clade spectra recognition were unsuccessful. In conclusion, MALDI-TOF mass spectra bar code analysis failed to reliably recognize genetically related C. albicans isolates. Further studies are warranted to develop alternative MALDI-TOF mass spectra analytical approaches to identify and monitor C. albicans clades in the routine clinical laboratory.
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Affiliation(s)
- C Dhieb
- Laboratoire de Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis, 2092, Tunis, Tunisia
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48
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Gautier M, Ranque S, Normand AC, Becker P, Packeu A, Cassagne C, L'Ollivier C, Hendrickx M, Piarroux R. Matrix-assisted laser desorption ionization time-of-flight mass spectrometry: revolutionizing clinical laboratory diagnosis of mould infections. Clin Microbiol Infect 2014; 20:1366-71. [DOI: 10.1111/1469-0691.12750] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 05/20/2014] [Accepted: 06/27/2014] [Indexed: 12/22/2022]
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49
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Triest D, Stubbe D, De Cremer K, Piérard D, Detandt M, Hendrickx M. Banana infecting fungus, Fusarium musae, is also an opportunistic human pathogen: are bananas potential carriers and source of fusariosis? Mycologia 2014; 107:46-53. [PMID: 25361833 DOI: 10.3852/14-174] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
During re-identification of Fusarium strains in the BCCM™/IHEM fungal collection by multilocus sequence-analysis we observed that five strains, previously identified as Fusarium verticillioides, were Fusarium musae, a species described in 2011 from banana fruits. Four strains were isolated from blood samples or biopsies of immune-suppressed patients and one was isolated from the clinical environment, all originating from different hospitals in Belgium or France, 2001-2008. The F. musae identity of our isolates was confirmed by phylogenetic analysis using reference sequences of type material. Absence of the gene cluster necessary for fumonisin biosynthesis, characteristic to F. musae, was also the case for our isolates. In vitro antifungal susceptibility testing revealed no important differences in their susceptibility compared to clinical F. verticillioides strains and terbinafine was the most effective drug. Additional clinical F. musae strains were searched by performing BLAST queries in GenBank. Eight strains were found, of which six were keratitis cases from the U.S. multistate contact lens-associated outbreak in 2005 and 2006. The two other strains were also from the U.S., causing either a skin infection or sinusitis. This report is the first to describe F. musae as causative agent of superficial and opportunistic, disseminated infections in humans. Imported bananas might act as carriers of F. musae spores and be a potential source of infection with F. musae in humans. An alternative hypothesis is that the natural distribution of F. musae is geographically a lot broader than originally suspected and F. musae is present on different plant hosts.
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Affiliation(s)
- David Triest
- Scientific Institute of Public Health, Department of Mycology and Aerobiology, BCCM™/IHEM fungal collection, Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Dirk Stubbe
- Scientific Institute of Public Health, Department of Mycology and Aerobiology, BCCM™/IHEM fungal collection, Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Koen De Cremer
- Scientific Institute of Public Health, Department of Biomonitoring, Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Denis Piérard
- Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Department of Microbiology and Infection Control, Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Monique Detandt
- Scientific Institute of Public Health, Department of Mycology and Aerobiology, BCCM™/IHEM fungal collection, Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
| | - Marijke Hendrickx
- Scientific Institute of Public Health, Department of Mycology and Aerobiology, BCCM™/IHEM fungal collection, Juliette Wytsmanstraat 14, 1050 Brussels, Belgium
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50
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Vanbekbergen N, Hendrickx M, Leyns L. Growth differentiation factor 11 is an encephalic regionalizing factor in neural differentiated mouse embryonic stem cells. BMC Res Notes 2014; 7:766. [PMID: 25352416 PMCID: PMC4228095 DOI: 10.1186/1756-0500-7-766] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 10/14/2014] [Indexed: 12/02/2022] Open
Abstract
Background The central nervous system has a complex structural organization and consists of different subdomains along the antero-posterior axis. However, questions remain about the molecular mechanisms leading to the regionalization of this organ. We used a previously developed methodology to identify the novel patterning role of GDF11, a TGF-β signaling factor. Findings Using an assay based on neural differentiated mouse embryonic stem cells, GDF11 is shown to induce diencephalic (posterior forebrain), mesencephalic (midbrain) and metencephalic (anterior hindbrain) fates at the expense of telencephalic (anterior forebrain) specification. GDF11 has not previously been implicated in the early patterning of the nervous system. In addition, inhibition of the TGF-β type I receptors Alk4, Alk5 and Alk7 by the pharmacological inhibitor SB431542 caused a strong anteriorization of the cells. Conclusions Our findings suggest that GDF11 is involved in the earliest steps of the brain patterning during neurogenesis in the vertebrate embryo and is shown to be a regionalizing factor of the regional fate in the developing brain. This regionalization is not a typical posteriorizing signal as seen with retinoic acid, FGF or BMP molecules. To our knowledge, this is the first time that GDF11 is implicated in the earliest steps of the patterning of the neural plate.
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Affiliation(s)
| | | | - Luc Leyns
- Department of Biology, Lab for Cell Genetics, Vrije Universiteit Brussel (VUB), 2 Pleinlaan, B-1050 Brussels, Belgium.
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