1
|
Mohammad N, Huguenin A, Lefebvre A, Menvielle L, Toubas D, Ranque S, Villena I, Tannier X, Normand AC, Piarroux R. Nosocomial transmission of Aspergillus flavus in a neonatal intensive care unit: Long-term persistence in environment and interest of MALDI-ToF mass-spectrometry coupled with convolutional neural network for rapid clone recognition. Med Mycol 2024; 62:myad136. [PMID: 38142226 DOI: 10.1093/mmy/myad136] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/28/2023] [Accepted: 12/21/2023] [Indexed: 12/25/2023] Open
Abstract
Aspergillosis of the newborn remains a rare but severe disease. We report four cases of primary cutaneous Aspergillus flavus infections in premature newborns linked to incubators contamination by putative clonal strains. Our objective was to evaluate the ability of matrix-assisted laser desorption/ionisation time of flight (MALDI-TOF) coupled to convolutional neural network (CNN) for clone recognition in a context where only a very small number of strains are available for machine learning. Clinical and environmental A. flavus isolates (n = 64) were studied, 15 were epidemiologically related to the four cases. All strains were typed using microsatellite length polymorphism. We found a common genotype for 9/15 related strains. The isolates of this common genotype were selected to obtain a training dataset (6 clonal isolates/25 non-clonal) and a test dataset (3 clonal isolates/31 non-clonal), and spectra were analysed with a simple CNN model. On the test dataset using CNN model, all 31 non-clonal isolates were correctly classified, 2/3 clonal isolates were unambiguously correctly classified, whereas the third strain was undetermined (i.e., the CNN model was unable to discriminate between GT8 and non-GT8). Clonal strains of A. flavus have persisted in the neonatal intensive care unit for several years. Indeed, two strains of A. flavus isolated from incubators in September 2007 are identical to the strain responsible for the second case that occurred 3 years later. MALDI-TOF is a promising tool for detecting clonal isolates of A. flavus using CNN even with a limited training set for limited cost and handling time.
Collapse
Affiliation(s)
- Noshine Mohammad
- Sorbonne Université, INSERM, Institut Pierre-Louis d'Epidémiologie et de Santé Publique, AP-HP, Paris, France
- Groupe Hospitalier Pitié-Salpêtrière, Service de Parasitologie-Mycologie, Paris, France
| | - Antoine Huguenin
- Laboratoire de Parasitologie-Mycologie, Pôle de Biologie et de Pathologie, CHU de Reims, Reims, France
- Université de Reims Champagne Ardenne, ESCAPE EA7510, Reims, France
| | | | - Laura Menvielle
- CHU de Reims, Hôpital Américain, Service de réanimation néonatale, 45 rue Cognaq Jay, Reims, France
| | - Dominique Toubas
- Laboratoire de Parasitologie-Mycologie, Pôle de Biologie et de Pathologie, CHU de Reims, Reims, France
- Université de Reims Champagne Ardenne, ESCAPE EA7510, Reims, France
- Equipe Opérationnelle d'Hygiène, CHU de Reims, France
- CHU de Reims, Hôpital Américain, Service de réanimation néonatale, 45 rue Cognaq Jay, Reims, France
- BioSpecT (Translational BioSpectroscopy) EA 7506, SFR Santé, Université de Reims Champagne-Ardenne, Reims, France
| | - Stéphane Ranque
- IHU-Méditerranée Infection, Marseille, France
- Aix-Marseille Université, AP-HM, IRD, SSA, VITROME, Marseille, France
| | - Isabelle Villena
- Laboratoire de Parasitologie-Mycologie, Pôle de Biologie et de Pathologie, CHU de Reims, Reims, France
- Université de Reims Champagne Ardenne, ESCAPE EA7510, Reims, France
| | - Xavier Tannier
- Sorbonne Université, INSERM, Université Sorbonne Paris Nord, Laboratoire d'Informatique Médicale et d'Ingénierie des connaissances en e-Santé, LIMICS, Paris, France
| | - Anne-Cécile Normand
- Groupe Hospitalier Pitié-Salpêtrière, Service de Parasitologie-Mycologie, Paris, France
| | - Renaud Piarroux
- Sorbonne Université, INSERM, Institut Pierre-Louis d'Epidémiologie et de Santé Publique, AP-HP, Paris, France
- Groupe Hospitalier Pitié-Salpêtrière, Service de Parasitologie-Mycologie, Paris, France
| |
Collapse
|
2
|
Le Gal S, Toubas D, Totet A, Dalle F, Abou Bacar A, Le Meur Y, Nevez G, Accoceberry I, Bailly E, Bellanger AP, Bonhomme J, Cateau E, Candolfi E, Damiani C, Dannaoui E, Dardé ML, Debourgogne A, Delhaes L, Desoubeaux G, Favennec L, Flori P, Gabriel F, Iriart X, Lachaud L, Leterrier M, Le Pape P, Machouard M, Marty P, Maubon D, Millon L, Pomares C, Pons D, Rodier MH. Pneumocystis Infection Outbreaks in Organ Transplantation Units in France: A Nation-Wide Survey. Clin Infect Dis 2019; 70:2216-2220. [DOI: 10.1093/cid/ciz901] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 09/09/2019] [Indexed: 11/14/2022] Open
Abstract
Abstract
The burden of nosocomial Pneumocystis infections in transplantation units in France was evaluated through a retrospective survey. Over 12 years, 16 outbreaks occurred, including 13 among renal transplant recipients (RTRs). We performed Pneumocystis jirovecii genotyping in 5 outbreaks, which suggested that specific strains may have been selected by RTRs.
Collapse
Affiliation(s)
- Solène Le Gal
- Groupe d’études des Interactions Hôte-Pathogène (EA 3142), Université de Brest, Université d’Angers, France
- Laboratory of Parasitology and Mycology, Brest University Hospital Brest, France Brest, France
| | - Dominique Toubas
- Laboratory of Parasitology and Mycology, Reims University Hospital Brest, France Reims, France
| | - Anne Totet
- Laboratory of Parasitology and Mycology, Amiens University Hospital Brest, France Amiens, France
| | - Frederic Dalle
- Laboratory of Parasitology and Mycology, Dijon University Hospital Brest, France Dijon, France
| | - Ahmed Abou Bacar
- Institut de Parasitologie et de Pathologie Tropicale de Strasbourg, Université de Strasbourg, Hôpitaux Universitaires de Strasbourg Strasbourg, France
| | - Yann Le Meur
- Department of Nephrology and Renal Transplantation Unit, Brest University Hospital, Brest, France
| | - Gilles Nevez
- Groupe d’études des Interactions Hôte-Pathogène (EA 3142), Université de Brest, Université d’Angers, France
- Laboratory of Parasitology and Mycology, Brest University Hospital Brest, France Brest, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
3
|
Migault C, Lebrun D, Toubas O, Nguyen Y, Giltat A, Julien G, Toubas D, Lebargy F, Delmer A, Bani-Sadr F. Pulmonary adverse events related to idelalisib therapy: A single centre experience. J Chemother 2018; 30:318-322. [PMID: 30299215 DOI: 10.1080/1120009x.2018.1516184] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Idelalisib is a potent and selective inhibitor of the PI3Kδ approved since September 2014 for the treatment of several types of B cell malignancies. Pulmonary adverse events related to idelalisib are an emerging serious adverse event. We report here a single centre cohort of 16 patients who initiated idelalisib as routine treatment. Five of them experienced severe pulmonary adverse events related to idelalisib therapy. Comparison of the 5 patients with severe pulmonary events versus the 11 patients without identified no predisposing factors. Severe pulmonary adverse events were related to infectious pneumonia and/or to a drug-induced pneumonitis. The mechanisms of idelalisib-associated pneumonitis are unknown but consistent with the drug-induced pneumonitis described with mTOR inhibitors. Indeed, by inhibiting PI3Kδ, idelalisib also inhibits the mTOR pathway. Clinicians should be aware that any idelalisib-treated patient who presents with pulmonary symptoms should be evaluated for pneumonitis. Corticosteroids should be considered in addition to anti-infective therapy in case of severe pneumonitis or persistent pulmonary symptoms despite adequate antibiotic therapy.
Collapse
Affiliation(s)
- Caroline Migault
- a CHU Reims, Service de Médecine Interne et Maladies Infectieuses et Tropicales , Reims , France
| | - Delphine Lebrun
- a CHU Reims, Service de Médecine Interne et Maladies Infectieuses et Tropicales , Reims , France
| | - Olivier Toubas
- b Université de Reims Champagne-Ardenne, Faculté de Médecine, EA-4684/SFR CAP-SANTE , Reims , France
| | - Yohan Nguyen
- a CHU Reims, Service de Médecine Interne et Maladies Infectieuses et Tropicales , Reims , France.,b Université de Reims Champagne-Ardenne, Faculté de Médecine, EA-4684/SFR CAP-SANTE , Reims , France
| | - Aurélien Giltat
- a CHU Reims, Service de Médecine Interne et Maladies Infectieuses et Tropicales , Reims , France
| | - Gautier Julien
- a CHU Reims, Service de Médecine Interne et Maladies Infectieuses et Tropicales , Reims , France
| | - Dominique Toubas
- c CHU Reims, Laboratoire de Parasitologie Mycologie , Reims , France
| | - François Lebargy
- d CHU Reims, Service de Pneumologie , Université Reims Champagne Ardenne, UFR Médecine France , Reims , France
| | - Alain Delmer
- e CHU Reims, Service d'Hématologie Clinique , Université Reims Champagne Ardenne, UFR Médecine , Reims , France
| | - Firouzé Bani-Sadr
- a CHU Reims, Service de Médecine Interne et Maladies Infectieuses et Tropicales , Reims , France.,b Université de Reims Champagne-Ardenne, Faculté de Médecine, EA-4684/SFR CAP-SANTE , Reims , France
| |
Collapse
|
4
|
Lebrun D, Floch T, Brunet A, Julien G, Romaru J, N'Guyen Y, Cousson J, Giltat A, Toubas D, Bani-Sadr F. Severe post-artesunate delayed onset anaemia responding to corticotherapy: a case report. J Travel Med 2018; 25:4780172. [PMID: 29394387 DOI: 10.1093/jtm/tax091] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 12/07/2017] [Indexed: 11/14/2022]
Abstract
Delayed onset haemolysis occurring post-artesunate and post-artemisinin combination therapy is secondary to delayed clearance of infected erythrocytes spared by pitting during treatment. We report a case of severe post-treatment delayed haemolytic anaemia with a positive direct antiglobulin test and a positive response to corticosteroid therapy, suggesting an associated immune mechanism.
Collapse
Affiliation(s)
- Delphine Lebrun
- Department of Internal Medicine, Clinical Immunology and Infectious Diseases, Reims Teaching Hospitals, Reims, France
- Department of Internal Medicine and Infectious Diseases, Manchester Hospital, Charleville-Mézières, France
| | - Thierry Floch
- Intensive Care Unit, Reims Teaching Hospitals, Reims, France
| | - Aurélie Brunet
- Department of Internal Medicine, Clinical Immunology and Infectious Diseases, Reims Teaching Hospitals, Reims, France
| | - Gautier Julien
- Department of Internal Medicine, Clinical Immunology and Infectious Diseases, Reims Teaching Hospitals, Reims, France
| | - Juliette Romaru
- Department of Internal Medicine, Clinical Immunology and Infectious Diseases, Reims Teaching Hospitals, Reims, France
| | - Yohan N'Guyen
- Department of Internal Medicine, Clinical Immunology and Infectious Diseases, Reims Teaching Hospitals, Reims, France
| | - Joël Cousson
- Intensive Care Unit, Reims Teaching Hospitals, Reims, France
| | - Aurélien Giltat
- Department of Internal Medicine, Clinical Immunology and Infectious Diseases, Reims Teaching Hospitals, Reims, France
| | - Dominique Toubas
- Parasitology-Mycology Laboratory, Reims Teaching Hospitals, Reims, France
| | - Firouzé Bani-Sadr
- Department of Internal Medicine, Clinical Immunology and Infectious Diseases, Reims Teaching Hospitals, Reims, France
| |
Collapse
|
5
|
Nevez G, Le Gal S, Noel N, Wynckel A, Huguenin A, Le Govic Y, Pougnet L, Virmaux M, Toubas D, Bajolet O. Investigation of nosocomial pneumocystis infections: usefulness of longitudinal screening of epidemic and post-epidemic pneumocystis genotypes. J Hosp Infect 2017; 99:332-345. [PMID: 28943270 DOI: 10.1016/j.jhin.2017.09.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 06/27/2017] [Accepted: 09/18/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Twenty-five patients, of whom 22 were renal transplant recipients, developed Pneumocystis jirovecii infections at the nephrology department of Reims University Hospital (France) from September 2008 to October 2009, whereas only four sporadic cases had been diagnosed in this department over the 14 previous years. AIM This outbreak was investigated by analysing patient encounters and P. jirovecii types. METHODS A transmission map was drawn up. P. jirovecii typing at DHPS, ITS and mtLSU rRNA sequences was performed in the patients of the cluster (18 patients with Pneumocystis pneumonia (PCP) and seven colonized patients), 10 unlinked control patients (six PCP patients and four colonized patients), as well as 23 other patients diagnosed with P. jirovecii (nine PCP patients and 14 colonized patients) in the same department over a three-year post-epidemic period. FINDINGS Eleven encounters between patients harbouring the same types were observed. Three PCP patients and one colonized patient were considered as possible index cases. The most frequent types in the cluster group and the control group were identical. However, their frequency was significantly higher in the first than in the second group (P < 0.01). Identical types were also identified in the post-epidemic group, suggesting a second outbreak due to the same strain, contemporary to a disruption in prevention measures. CONCLUSIONS These results provide additional data on the role of both PCP and colonized patients as infectious sources. Longitudinal screening of P. jirovecii types in infected patients, including colonized patients, is required in the investigation of the fungus's circulation within hospitals.
Collapse
Affiliation(s)
- G Nevez
- Université de Bretagne Loire, GEIHP EA 3142, Brest, France; Laboratory of Parasitology and Mycology, Brest University Hospital, Brest, France.
| | - S Le Gal
- Université de Bretagne Loire, GEIHP EA 3142, Brest, France; Laboratory of Parasitology and Mycology, Brest University Hospital, Brest, France
| | - N Noel
- Department of Nephrology, Reims University Hospital, Reims, France
| | - A Wynckel
- Department of Nephrology, Reims University Hospital, Reims, France
| | - A Huguenin
- Laboratory of Parasitology and Mycology, Reims University Hospital, Reims, France
| | - Y Le Govic
- Université de Bretagne Loire, GEIHP EA 3142, Angers, France
| | - L Pougnet
- Université de Bretagne Loire, GEIHP EA 3142, Brest, France
| | - M Virmaux
- Université de Bretagne Loire, GEIHP EA 3142, Brest, France
| | - D Toubas
- Laboratory of Parasitology and Mycology, Reims University Hospital, Reims, France; Université de Reims Champagne-Ardenne, Equipe MéDIAN, Biophotonique et Technologies pour la Santé, Reims, France
| | - O Bajolet
- Université de Reims Champagne-Ardenne, EA 7887, Reims, France; Equipe Opérationnelle d'Hygiène, Reims University Hospital, Reims, France
| |
Collapse
|
6
|
Dupont D, Huguenin A, Tisserand E, Reiter V, Morelon E, Badet L, Villena I, Wallon M, Toubas D. Donor Derived Candida stellimalicola in a Clinical Specimen: Preservation Fluid Contamination During Pancreas Procurement. Mycopathologia 2017; 183:573-577. [PMID: 28681316 DOI: 10.1007/s11046-017-0171-3] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 06/27/2017] [Indexed: 11/29/2022]
Abstract
We report here a case of possible donor-derived Candida stellimalicola infection after pancreas transplantation. Candida stellimalicola, an environmental non-filamentous yeast, was isolated from both the peritoneal fluid of the graft donor and the preservation fluid of the transplanted pancreas. Interestingly, this strain exhibited high minimum inhibitory concentrations to azoles. These results justified the use of echinocandins as therapy instead of fluconazole. This switch permitted a favorable outcome. To our knowledge, this is the first report of C. stellimalicola from clinical samples and therefore the first reported case of a possible human infection. This case report highlights the need for standardized microbiological procedures in solid organ transplant settings. Moreover, it underlines the importance of using molecular identification technique when routine techniques do not allow successful identification of the pathogen. It is of utmost importance to determine sensitivity profile, even in the absence of species-level identification, because resistance to fluconazole is not uncommon, especially in emergent species.
Collapse
Affiliation(s)
- Damien Dupont
- Institut des Agents Infectieux, Parasitologie Mycologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, 69004, 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, 69000, France.
| | - Antoine Huguenin
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, Reims, 51092, France
| | - Elodie Tisserand
- Pediatric Intensive Care Unit, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, Reims, 51092, France
| | - Véronique Reiter
- PMO, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, Reims, 51092, France
| | - Emmanuel Morelon
- Service de Transplantation, Néphrologie et Immunologie, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon, 69003, France
| | - Lionel Badet
- Service d'Urologie et Transplantation, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon, 69003, France
| | - Isabelle Villena
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, Reims, 51092, France.,Laboratoire de Parasitologie-Mycologie, EA3800, SFR Cap-Santé, UFR de Médecine, Université de Reims Champagne-Ardenne, Reims, 51100, France
| | - Martine Wallon
- Institut des Agents Infectieux, Parasitologie Mycologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, 69004, 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, 69000, France
| | - Dominique Toubas
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, Reims, 51092, France.,MéDIAN-Biophotonique et Technologies pour la Santé, CNRS UMR 7369 MEDyC, UFR de Médecine, SFR CAP Santé, Université de Reims Champagne-Ardenne, Reims, 51100, France
| |
Collapse
|
7
|
Migault C, Lebrun D, Toubas O, Nguyen Y, Giltat A, Julien G, Toubas D, Lebargy F, Delmer A, Bani-Sadr F. Pneumopathies sévères sous idelalisib : ne pas méconnaître la toxicité pulmonaire médicamenteuse. Med Mal Infect 2017. [DOI: 10.1016/j.medmal.2017.03.197] [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: 10/19/2022]
|
8
|
Argy N, Bertin G, Milet J, Hubert V, Clain J, Cojean S, Houzé P, Tuikue-Ndam N, Kendjo E, Deloron P, Houzé S, Matheron S, Casalino E, Wolff M, Delaval A, Agnamey P, Durand R, Pilo J, Rapp C, Faucher J, Cuisenier B, Poilane I, Bemba D, Roide A, Debourgogne A, Thibault M, Toubas D, Patoz P, De Gentile L, Pons D, Hurst J, Lohmann C, Bigel M, Godineau N, Thouvenin M, Dunand J, Ait-Ammar N, Angoulvant A, Dahane N, Lefevre M, Murat J, Garnaud C, Dannaoui E, Botterel F, Dutoit E, Dardé M, Ichou H, Branger C, Penn P, Angebault C, Morio F, Bret L, Thellier M, Mouri O, Cateau E, Siriez J, Fenneteau O, Revest M, Belaz S, Belkadi G, Hamane S, Bretagne S, Aboubacar A, Leloup G, Develoux M, Lapillonne H, Eloy O, Nevez G, Raffenot D, Buret B, Desoubeaux G, Goepp A. Preferential expression of domain cassettes 4, 8 and 13 of Plasmodium falciparum erythrocyte membrane protein 1 in severe malaria imported in France. Clin Microbiol Infect 2017; 23:211.e1-211.e4. [DOI: 10.1016/j.cmi.2016.10.012] [Citation(s) in RCA: 5] [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] [Received: 03/25/2016] [Revised: 10/06/2016] [Accepted: 10/12/2016] [Indexed: 11/25/2022]
|
9
|
Le Gal S, Robert-Gangneux F, Pépino Y, Belaz S, Damiani C, Guéguen P, Pitous M, Virmaux M, Lissillour E, Pougnet L, Guillaud-Saumur T, Toubas D, Valot S, Hennequin C, Morio F, Hasseine L, Bouchara JP, Totet A, Nevez G. A misleading false-negative result of Pneumocystis real-time PCR assay due to a rare punctual mutation: A French multicenter study. Med Mycol 2016; 55:180-184. [PMID: 27489302 DOI: 10.1093/mmy/myw051] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 06/15/2016] [Revised: 02/05/2016] [Accepted: 06/18/2016] [Indexed: 11/13/2022] Open
Abstract
This article describes a previously unreported mutation at position 210 (C210T) of the mitochondrial large subunit ribosomal RNA (mtLSUrRNA) gene of Pneumocystis jirovecii, which led to a false-negative result of a real-time polymerase chain reaction (PCR) assay. Since the aforementioned real-time PCR assay is widely used in France, a French multicenter study was conducted to estimate the mutation frequency and its potential impact on the routine diagnosis of Pneumocystis pneumonia (PCP). Through analysis of data obtained from eight centers, the mutation frequency was estimated at 0.28%. This low frequency should not call into question the routine use of this PCR assay. Nonetheless, the occurrence of the false-negative PCR result provides arguments for maintaining microscopic techniques combined to PCR assays to achieve PCP diagnosis.
Collapse
Affiliation(s)
- Solène Le Gal
- University of Brest, GEIHP EA 3142, Brest, France .,Laboratory of Parasitology and Mycology, Brest University Hospital, Brest, France
| | - Florence Robert-Gangneux
- University of Rennes 1, INSERM U1085, Rennes, France.,Laboratory of Parasitology and Mycology, Rennes University Hospital, Rennes, France
| | - Yann Pépino
- University of Brest, GEIHP EA 3142, Brest, France
| | - Sorya Belaz
- University of Rennes 1, INSERM U1085, Rennes, France.,Laboratory of Parasitology and Mycology, Rennes University Hospital, Rennes, France
| | - Céline Damiani
- University of Picardy-Jules Verne, EA 4285 UMR-I 01 INERIS, Amiens, France.,Department of Parasitology and Mycology, Amiens University Hospital, Amiens, France
| | - Paul Guéguen
- Laboratory of Molecular Genetics and Histocompatibility, Brest University Hospital, Brest, France.,University of Brest, INSERM 1078, Molecular Genetics and Epidemiological Genetics, SFR 148, Brest, France
| | | | | | | | | | | | - Dominique Toubas
- Parasitology and Mycology laboratory, Reims University Hospital, Reims, France
| | - Stéphane Valot
- Parasitology and Mycology laboratory, Dijon University Hospital, Dijon, France
| | - Christophe Hennequin
- Parasitology and Mycology laboratory, Saint Antoine Hospital, Assistance Publique-Hôpitaux de Paris, France
| | - Florent Morio
- Parasitology and Mycology laboratory, Nantes University Hospital, Nantes, France
| | - Lilia Hasseine
- Parasitology and Mycology laboratory, Nice University Hospital, Nice, France
| | | | - Anne Totet
- University of Picardy-Jules Verne, EA 4285 UMR-I 01 INERIS, Amiens, France.,Department of Parasitology and Mycology, Amiens University Hospital, Amiens, France
| | - Gilles Nevez
- University of Brest, GEIHP EA 3142, Brest, France .,Laboratory of Parasitology and Mycology, Brest University Hospital, Brest, France
| |
Collapse
|
10
|
Daragon M, Pluchart C, Huguenin A, Pochon C, Villena I, Bougnoux M, Gordes S, Toubas D. Aspergillose disséminée chez un patient Leucémique atteint de réaction du Greffon contre l’hôte : intérêt diagnostique des antigènes fongiques. J Mycol Med 2016. [DOI: 10.1016/j.mycmed.2016.04.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
11
|
Millon L, Herbrecht R, Grenouillet F, Morio F, Alanio A, Letscher-Bru V, Cassaing S, Chouaki T, Kauffmann-Lacroix C, Poirier P, Toubas D, Augereau O, Rocchi S, Garcia-Hermoso D, Bretagne S. Early diagnosis and monitoring of mucormycosis by detection of circulating DNA in serum: retrospective analysis of 44 cases collected through the French Surveillance Network of Invasive Fungal Infections (RESSIF). Clin Microbiol Infect 2015; 22:810.e1-810.e8. [PMID: 26706615 DOI: 10.1016/j.cmi.2015.12.006] [Citation(s) in RCA: 141] [Impact Index Per Article: 15.7] [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: 08/12/2015] [Revised: 12/02/2015] [Accepted: 12/06/2015] [Indexed: 11/26/2022]
Abstract
The main objective of this study was to assess the diagnostic performance of a set of three Mucorales quantitative PCR assays in a retrospective multicentre study. Mucormycosis cases were recorded thanks to the French prospective surveillance programme (RESSIF network). The day of sampling of the first histological or mycological positive specimen was defined as day 0 (D0). Detection of circulating DNA was performed on frozen serum samples collected from D-30 to D30, using quantitative PCR assays targeting Rhizomucor, Lichtheimia, Mucor/Rhizopus. Forty-four patients diagnosed with probable (n = 19) or proven (n = 25) mucormycosis were included. Thirty-six of the 44 patients (81%) had at least one PCR-positive serum. The first PCR-positive sample was observed 9 days (range 0-28 days) before diagnosis was made using mycological criteria and at least 2 days (range 0-24 days) before imaging. The identifications provided with the quantitative PCR assays were all concordant with culture and/or PCR-based identification of the causal species. Survival rate at D84 was significantly higher for patients with an initially positive PCR that became negative after treatment initiation than for patients whose PCR remained positive (48% and 4%, respectively; p <10-6). The median time for complete negativity of PCR was 7 days (range 3-19 days) after initiation of l-AmB treatment. Despite some limitations due to the retrospective design of the study, we showed that Mucorales quantitative PCR could not only confirm the mucormycosis diagnosis when other mycological arguments were present but could also anticipate this diagnosis. Quantification of DNA loads may also be a useful adjunct to treatment monitoring.
Collapse
Affiliation(s)
- L Millon
- Laboratoire de Parasitologie Mycologie, Centre Hospitalier Régional Universitaire, Besançon, France; Laboratoire Chrono-environnement UMR6249, Université Bourgogne Franche-Comté/CNRS, Besançon, France.
| | - R Herbrecht
- Département d'Oncologie et Hématologie, Hôpitaux Universitaires de Strasbourg, France
| | - F Grenouillet
- Laboratoire de Parasitologie Mycologie, Centre Hospitalier Régional Universitaire, Besançon, France; Laboratoire Chrono-environnement UMR6249, Université Bourgogne Franche-Comté/CNRS, Besançon, France
| | - F Morio
- Laboratoire de Parasitologie-Mycologie, Centre Hospitalier Universitaire Nantes, France; Département de Parasitologie et Mycologie Médicale, Université de Nantes, Nantes Atlantique Universités, EA1155-IICiMed, Faculté de Pharmacie, Nantes, France
| | - A Alanio
- Centre Hospitalier Universitaire APHP-Saint Louis Paris, France; Institut Pasteur, Unité de Mycologie Moléculaire, Centre National de Référence Mycoses Invasives et Antifongiques, Paris, France; CNRS URA3012, Institut Pasteur, Paris, France; Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - V Letscher-Bru
- Laboratoire de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, France; Institut de Parasitologie et de Pathologie Tropicale, EA7292, Fédération de Médecine Translationnelle, Université de Strasbourg, France
| | - S Cassaing
- Laboratoire de Parasitologie-Mycologie Centre Hospitalier Universitaire Toulouse, France
| | - T Chouaki
- Centre Hospitalier Universitaire Amiens, France; EA 4666-Centre Universitaire de Recherche en Santé CURS, CAP-Santé (FED 4231), Université de Picardie Jules Verne, France
| | | | - P Poirier
- Laboratoire de Parasitologie-Mycologie, Centre Hospitalier Universitaire Gabriel Montpied, Clermont-Ferrand, France
| | - D Toubas
- Laboratoire de Parasitologie-Mycologie, Centre Hospitalier Universitaire Reims, France; Unité MEDyC, CNRS UMR7369, Université Reims Champagne-Ardenne, Reims, France
| | - O Augereau
- Centre Hospitalier Régional Orléans, France
| | - S Rocchi
- Laboratoire Chrono-environnement UMR6249, Université Bourgogne Franche-Comté/CNRS, Besançon, France
| | - D Garcia-Hermoso
- Institut Pasteur, Unité de Mycologie Moléculaire, Centre National de Référence Mycoses Invasives et Antifongiques, Paris, France; CNRS URA3012, Institut Pasteur, Paris, France
| | - S Bretagne
- Centre Hospitalier Universitaire APHP-Saint Louis Paris, France; Institut Pasteur, Unité de Mycologie Moléculaire, Centre National de Référence Mycoses Invasives et Antifongiques, Paris, France; CNRS URA3012, Institut Pasteur, Paris, France; Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | | |
Collapse
|
12
|
Huguenin A, Lorot A, Zachar D, Dudez O, Mzabi A, Dupuis E, Lehrter V, Merol JC, Villena I, Depaquit J, Toubas D. Matrix-assisted laser desorption ionization-time of flight identification of Schizophyllum commune: perspectives on the review by Chowdhary et al. Med Mycol 2015; 53:896-7. [PMID: 26472778 DOI: 10.1093/mmy/myv031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Antoine Huguenin
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France
| | - Aurélie Lorot
- Service d'ORL et de Chirurgie Cervico-Faciale, CHU de Reims, Hopital Robert Debré, 45 rue Cognacq Jay, 51092 Reims cedex, France
| | - Dominique Zachar
- Laboratoire central d'Anatomie et de Cytologie pathologiques, CHU de Reims, Hôpital Robert-Debré, Université Reims Champagne-Ardenne, rue du Général-Koenig, 51100 Reims cedex, France
| | - Oriane Dudez
- Laboratoire central d'Anatomie et de Cytologie pathologiques, CHU de Reims, Hôpital Robert-Debré, Université Reims Champagne-Ardenne, rue du Général-Koenig, 51100 Reims cedex, France
| | - Alexandre Mzabi
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France EA 3800, Université Reims Champagne-Ardenne, France
| | - Emilie Dupuis
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France EA 3800, Université Reims Champagne-Ardenne, France
| | - Véronique Lehrter
- Université Reims Champagne-Ardenne, ANSES, EA4688 - USC 'transmission vectorielle et épidémiosurveillance de maladies parasitaires (VECPAR)', SFR Cap Santé, Faculté de Pharmacie, 51 rue Cognacq-Jay, 51096 Reims, France
| | - Jean-Claude Merol
- Service d'ORL et de Chirurgie Cervico-Faciale, CHU de Reims, Hopital Robert Debré, 45 rue Cognacq Jay, 51092 Reims cedex, France
| | - Isabelle Villena
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France EA 3800, Université Reims Champagne-Ardenne, France
| | - Jérôme Depaquit
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France Université Reims Champagne-Ardenne, ANSES, EA4688 - USC 'transmission vectorielle et épidémiosurveillance de maladies parasitaires (VECPAR)', SFR Cap Santé, Faculté de Pharmacie, 51 rue Cognacq-Jay, 51096 Reims, France
| | - Dominique Toubas
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France Equipe MéDIAN, Unité MEDyC CNRS UMR 7369, Université de Reims Champagne-Ardenne, France
| |
Collapse
|
13
|
Roux A, Canet E, Valade S, Gangneux-Robert F, Hamane S, Lafabrie A, Maubon D, Debourgogne A, Le Gal S, Dalle F, Leterrier M, Toubas D, Pomares C, Bellanger AP, Bonhomme J, Berry A, Durand-Joly I, Magne D, Pons D, Hennequin C, Maury E, Roux P, Azoulay É. Pneumocystis jirovecii pneumonia in patients with or without AIDS, France. Emerg Infect Dis 2015; 20:1490-7. [PMID: 25148074 PMCID: PMC4178412 DOI: 10.3201/eid2009.131668] [Citation(s) in RCA: 192] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Immunosuppressed patients without AIDS had longer time to treatment and a higher rate of death than did patients with AIDS. Pneumocystis jirovecii pneumonia (PCP) in patients without AIDS is increasingly common. We conducted a prospective cohort study of consecutive patients with proven PCP; of 544 patients, 223 (41%) had AIDS (AIDS patients) and 321 (59%) had other immunosuppressive disorders (non-AIDS patients). Fewer AIDS than non-AIDS patients required intensive care or ventilation, and the rate of hospital deaths—17.4% overall—was significantly lower for AIDS versus non-AIDS patients (4% vs. 27%; p<0.0001). Multivariable analysis showed the odds of hospital death increased with older age, receipt of allogeneic bone marrow transplant, immediate use of oxygen, need for mechanical ventilation, and longer time to treatment; HIV-positive status or receipt of a solid organ transplant decreased odds for death. PCP is more often fatal in non-AIDS patients, but time to diagnosis affects survival and is longer for non-AIDS patients. Clinicians must maintain a high index of suspicion for PCP in immunocompromised patients who do not have AIDS.
Collapse
|
14
|
Huguenin A, Noel V, Rogez A, Chemla C, Villena I, Toubas D. Scedosporium apiospermum Otitis Complicated by a Temporomandibular Arthritis: A Case Report and Mini-Review. Mycopathologia 2015; 180:257-64. [PMID: 26105580 DOI: 10.1007/s11046-015-9911-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 06/12/2015] [Indexed: 11/28/2022]
Affiliation(s)
- A Huguenin
- Parasitology-Mycology Laboratory, 45 rue Cognacq-Jay, CHU Maison Blanche, 51100, Reims, France,
| | | | | | | | | | | |
Collapse
|
15
|
Huguenin A, Lorot A, Zachar D, Dudez O, Mérol JC, Dupuis E, Mzabi A, Fernandes M, Depaquit J, Toubas D. À propos d’un cas de sinusite à Schizophyllum commune : intérêt de la spectrométrie MALDI-TOF pour l’identification. J Mycol Med 2015. [DOI: 10.1016/j.mycmed.2015.02.030] [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: 11/25/2022]
|
16
|
Lecellier A, Gaydou V, Mounier J, Hermet A, Castrec L, Barbier G, Ablain W, Manfait M, Toubas D, Sockalingum G. Implementation of an FTIR spectral library of 486 filamentous fungi strains for rapid identification of molds. Food Microbiol 2015; 45:126-34. [DOI: 10.1016/j.fm.2014.01.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 12/29/2013] [Accepted: 01/03/2014] [Indexed: 11/30/2022]
|
17
|
Lambert D, Nerot C, Huguenin A, Diallo S, Mzabi A, Ohl X, Noel V, Rouger C, Strady C, Villena I, Bani-Sadr F, Toubas D. Mucormycoses post-traumatiques à Lichtheimia corymbifera : à propos de 3 cas. J Mycol Med 2014; 24:345-50. [DOI: 10.1016/j.mycmed.2014.10.013] [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] [Received: 09/23/2014] [Revised: 10/11/2014] [Accepted: 10/21/2014] [Indexed: 10/24/2022]
|
18
|
Lelievre L, Garcia-Hermoso D, Abdoul H, Hivelin M, Chouaki T, Toubas D, Mamez AC, Lantieri L, Lortholary O, Lanternier F. Posttraumatic mucormycosis: a nationwide study in France and review of the literature. Medicine (Baltimore) 2014; 93:395-404. [PMID: 25500709 PMCID: PMC4602436 DOI: 10.1097/md.0000000000000221] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Data on clinical, mycologic characteristics, and outcome of posttraumatic mucormycosis are scarce and often limited to case reports. From the French nationwide "RetroZygo" study, we compared posttraumatic mucormycosis cases with other forms of mucormycosis. We also reviewed reports of posttraumatic mucormycosis in the English-language literature from 1993 to 2013. We included all proven or probable cases for which underlying condition, route of infection, surgical and antifungal treatments, and outcome were detailed. From our cohort, posttraumatic mucormycosis (n = 16) differed significantly from other forms (n = 85) by rarity of underlying disease (31.2% vs 81%, p < 0.0001), frequency of cutaneous localization (87% vs 7%, p < 0.0001), short time before diagnosis (4.5 vs 21 d, p = 0.0002), species involved (Apophysomyces elegans complex and Saksenaea vasiformis), surgical requirement (93.7% vs 47%, p = 0.0006) and better survival (87.5% vs 47.6% at day 90, p = 0.03). We studied 122 cases of posttraumatic mucormycosis through our literature review. Most frequently reported traumas were traffic (37%), domestic accidents (15.1%), or natural disasters (13.4%). Mucormycosis occurred after extensive soft-tissue damage in 47.5% cases, with symptoms occurring a median of 9.5 days after trauma with necrosis being reported in 76.2% cases. Dissemination was found in 9% of patients, and bacterial coinfection in 41%. Nineteen percent of cases occurred in the Middle East or in India where Apophysomyces elegans complex was the predominant species recovered. Awareness of mucormycosis as a cause of posttrauma soft-tissue infection is warranted, especially in cases of soil-contaminated wounds. Survival is higher than in other forms of mucormycosis, but morbidity remains high.
Collapse
Affiliation(s)
- Lucie Lelievre
- From the Hôpital Necker-Enfants malades, Department of Infectious Diseases (L. Lelièvre, ACM, OL, FL), Assistance Publique Hôpitaux de Paris, Centre d'Infectiologie Necker-Pasteur, University Paris Descartes, Paris; CNRS URA3012 (DGH, OL), Paris; Institut Pasteur, Unité de Mycologie Moléculaire (DGH, OL), Centre National de Référence Mycoses Invasives et Antifongiques, Paris; Hôpital Necker-Enfants malades, Department of Biostatistic (HA), Assistance Publique Hôpitaux de Paris, University Paris Descartes, Paris; Hôpital Européen Georges Pompidou, Department of Plastic and Reconstructive Surgery (MH, L. Lantieri), Assistance Publique-Hôpitaux de Paris, University Paris Descartes, Paris; Hôpital Maison Blanche, Mycology-Parasitology Laboratory (DT), Centre Hospitalier Universitaire de Reims; Unité MEDyC, FRE CNRS 3481 (DT), Université de Reims Champagne Ardenne; Centre Hospitalo-Universitaire d'Amiens, Université de Picardie Jules Verne, Service de parasitologie et mycologie médicales (TC), Amiens, France. Members are listed in the Appendix
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Mzabi A, Larre I, Garcia T, Cohen R, Boulagnon-Rombi C, Gaudin A, Depaquit J, Ducasse A, Villena I, Toubas D. Endophtalmie aspergillaire post-traumatique : à propos d’un cas observé au CHU de Reims. J Mycol Med 2014. [DOI: 10.1016/j.mycmed.2014.06.022] [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: 10/24/2022]
|
20
|
Le Gal S, Damiani C, Virmaux M, Candolfi E, Abou-Bacar A, Dalle F, Bonnin A, Roux P, Toubas D, Totet A, Nevez G. Cas groupés d’infections à Pneumocystis jirovecii en milieu hospitalier. Résultats de l’enquête nationale menée auprès d’Anofel. J Mycol Med 2014. [DOI: 10.1016/j.mycmed.2014.01.019] [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: 11/25/2022]
|
21
|
de Almeida Júnior JN, Figueiredo DSY, Toubas D, Del Negro GMB, Motta AL, Rossi F, Guitard J, Morio F, Bailly E, Angoulvant A, Mazier D, Benard G, Hennequin C. Usefulness of matrix-assisted laser desorption ionisation-time-of-flight mass spectrometry for identifying clinical Trichosporon isolates. Clin Microbiol Infect 2014; 20:784-90. [PMID: 24355037 DOI: 10.1111/1469-0691.12502] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [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: 07/17/2013] [Revised: 11/12/2013] [Accepted: 12/10/2013] [Indexed: 11/27/2022]
Abstract
Trichosporon spp. have recently emerged as significant human pathogens. Identification of these species is important, both for epidemiological purposes and for therapeutic management, but conventional identification based on biochemical traits is hindered by the lack of updates to the species databases provided by the different commercial systems. In this study, 93 strains, or isolates, belonging to 16 Trichosporon species were subjected to both molecular identification using IGS1 gene sequencing and matrix-assisted laser desorption ionisation-time-of-flight (MALDI-TOF) analysis. Our results confirmed the limits of biochemical systems for identifying Trichosporon species, because only 27 (36%) of the isolates were correctly identified using them. Different protein extraction procedures were evaluated, revealing that incubation for 30 min with 70% formic acid yields the spectra with the highest scores. Among the six different reference spectra databases that were tested, a specific one composed of 18 reference strains plus seven clinical isolates allowed the correct identification of 67 of the 68 clinical isolates (98.5%). Although until recently it has been less widely applied to the basidiomycetous fungi, MALDI-TOF appears to be a valuable tool for identifying clinical Trichosporon isolates at the species level.
Collapse
Affiliation(s)
- J N de Almeida Júnior
- Central Laboratory Division-LIM03, Hospital das Clínicas da FMUSP, São Paulo, Brazil; INSERM, U945, Paris, France; Mycology Laboratory-LIM-53, Instituto de Medicina Tropical, FMUSP, São Paulo, Brazil
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Klossa J, Wattelier B, Happillon T, Toubas D, de Laulanie L, Untereiner V, Bon P, Manfait M. Quantitative phase imaging and Raman micro-spectroscopy applied to Malaria. Diagn Pathol 2013. [PMCID: PMC3849622 DOI: 10.1186/1746-1596-8-s1-s42] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
23
|
Lecellier A, Gaydou V, Mounier J, Castrec L, Barbier G, Huet S, Ablain W, Manfait M, Sockalingum GD, Toubas D. Analyse du mycélium par spectroscopie infrarouge à transformé de Fourier pour l’identification des champignons filamenteux. J Mycol Med 2013. [DOI: 10.1016/j.mycmed.2013.07.009] [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: 11/26/2022]
|
24
|
Facchin C, Bonnet M, Toubas D, Legrand M. Bilan et suivi du bon usage des antifongiques systémiques au CHU de Reims. J Mycol Med 2013. [DOI: 10.1016/j.mycmed.2013.07.051] [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: 11/16/2022]
|
25
|
Hennequin S, Nobrega De Almeida Junior J, Toubas D, Del Negro G, Morio F, Angoulvant A, Chandenier J, Satiko Figueiredo D, Guitard J, Benard G. Typage par séquençage multilocus de souches de Trichosporon mucoides et Trichosporon dermatis. J Mycol Med 2013. [DOI: 10.1016/j.mycmed.2013.07.042] [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: 11/29/2022]
|
26
|
Bredin S, Aparicio G, Toubas D, Rouger C, Diallo S. Ostéite de jambe à Pleurostomaphora richardsiae et Cladophiala bantiana : à propos d’un cas après fracture ouverte de jambe. J Mycol Med 2013. [DOI: 10.1016/j.mycmed.2013.07.036] [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]
|
27
|
Ok V, Merol JC, Dubernard X, Gaudin A, Villena I, Toubas D. Sinusite sphenoïdale à Aspergillus flavus : à propos d’un cas chez l’immunocompétent. J Mycol Med 2013. [DOI: 10.1016/j.mycmed.2013.07.045] [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]
|
28
|
Gharbi M, Flegg JA, Hubert V, Kendjo E, Metcalf JE, Bertaux L, Guérin PJ, Le Bras J, Aboubaca A, Agnamey P, Angoulvant A, Barbut P, Basset D, Belkadi G, Bellanger AP, Bemba D, Benoit-Vica F, Berry A, Bigel ML, Bonhomme J, Botterel F, Bouchaud O, Bougnoux ME, Bourée P, Bourgeois N, Branger C, Bret L, Buret B, Casalino E, Chevrier S, Conquere de Monbrison F, Cuisenier B, Danis M, Darde ML, De Gentile L, Delarbre JM, Delaunay P, Delaval A, Desoubeaux G, Develoux M, Dunand J, Durand R, Eloy O, Fauchet N, Faugere B, Faye A, Fenneteau O, Flori P, Fontrouge M, Garabedian C, Gayandrieu F, Godineau N, Houzé P, Houzé S, Hurst JP, Ichou H, Lachaud L, Lebuisson A, Lefevre M, LeGuern AS, Le Moal G, Lusina D, Machouart MC, Malvy D, Matheron S, Maubon D, Mechali D, Megarbane B, Menard G, Millon L, Aiach MM, Minodier P, Morelle C, Nevez G, Parola P, Parzy D, Patey O, Patoz P, Penn P, Perignon A, Picot S, Pilo JE, Poilane I, Pons D, Poupart M, Pradines B, Raffenot D, Rapp C, Receveur MC, Sarfati C, Senghor Y, Simon F, Siriez JY, Taudon N, Thellier M, Thouvenin M, Toubas D. Longitudinal study assessing the return of chloroquine susceptibility of Plasmodium falciparum in isolates from travellers returning from West and Central Africa, 2000-2011. Malar J 2013; 12:35. [PMID: 23351608 PMCID: PMC3583707 DOI: 10.1186/1475-2875-12-35] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [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: 10/11/2012] [Accepted: 01/19/2013] [Indexed: 11/10/2022] Open
Abstract
Background Chloroquine (CQ) was the main malaria therapy worldwide from the 1940s until the 1990s. Following the emergence of CQ-resistant Plasmodium falciparum, most African countries discontinued the use of CQ, and now promote artemisinin-based combination therapy as the first-line treatment. This change was generally initiated during the last decade in West and Central Africa. The aim of this study is to describe the changes in CQ susceptibility in this African region, using travellers returning from this region as a sentinel system. Methods The study was conducted by the Malaria National Reference Centre, France. The database collated the pfcrtK76T molecular marker for CQ susceptibility and the in vitro response to CQ of parasites from travellers’ isolates returning from Senegal, Mali, Ivory Coast or Cameroon. As a proxy of drug pressure, data regarding CQ intake in febrile children were collated for the study period. Logistic regression models were used to detect trends in the proportions of CQ resistant isolates. Results A total of 2874 parasite isolates were genotyped between 2000–2011. The prevalence of the pfcrt76T mutant genotype significantly decreased for Senegal (from 78% to 47%), Ivory Coast (from 63% to 37%), Cameroon (from 90% to 59%) and remained stable for Mali. The geometric mean of the 50% inhibitory concentration (IC50) of CQ in vitro susceptibility and the proportion of resistant isolates (defining resistance as an IC50 value > 100 nM) significantly decreased for Senegal (from 86 nM (59%) to 39 nM (25%)), Mali (from 84 nM (50%) to 51 nM (31%)), Ivory Coast (from 75 nM (59%) to 29 nM (16%)) and Cameroon (from 181 nM (75%) to 51 nM (37%)). Both analyses (molecular and in vitro susceptibility) were performed for the 2004–2011 period, after the four countries had officially discontinued CQ and showed an accelerated decline of the resistant isolates for the four countries. Meanwhile, CQ use among children significantly deceased in this region (fixed effects slope = −0.3, p < 10-3). Conclusions An increase in CQ susceptibility following official withdrawal of the drug was observed in travellers returning from West and Central African countries. The same trends were observed for molecular and in vitro analysis between 2004-2011and they correlated to the decrease of the drug pressure.
Collapse
Affiliation(s)
- Myriam Gharbi
- Mère et enfant face aux infections tropicales, IRD unité mixte de recherche 216, Université Paris Descartes-Paris V, 4 avenue de l'Observatoire, Paris Cedex 06 75270, France.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Akhoundi M, Bakhtiari R, Guillard T, Baghaei A, Tolouei R, Sereno D, Toubas D, Depaquit J, Abyaneh MR. Diversity of the bacterial and fungal microflora from the midgut and cuticle of phlebotomine sand flies collected in North-Western Iran. PLoS One 2012; 7:e50259. [PMID: 23226255 PMCID: PMC3511470 DOI: 10.1371/journal.pone.0050259] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 10/17/2012] [Indexed: 01/04/2023] Open
Abstract
Background Phlebotomine sand flies are the vectors of the leishmaniases, parasitic diseases caused by Leishmania spp. Little is known about the prevalence and diversity of sand fly microflora colonizing the midgut or the cuticle. Particularly, there is little information on the fungal diversity. This information is important for development of vector control strategies. Methodology/Principal Findings Five sand fly species: Phlebotomus papatasi, P. sergenti, P. kandelakii, P. perfiliewi and P. halepensis were caught in Bileh Savar and Kaleybar in North-Western Iran that are located in endemic foci of visceral leishmaniasis. A total of 35 specimens were processed. Bacterial and fungal strains were identified by routine microbiological methods. We characterized 39 fungal isolates from the cuticle and/or the midgut. They belong to six different genera including Penicillium (17 isolates), Aspergillus (14), Acremonium (5), Fusarium (1), Geotrichum (1) and Candida (1). We identified 33 Gram-negative bacteria: Serratia marcescens (9 isolates), Enterobacter cloacae (6), Pseudomonas fluorescens (6), Klebsiella ozaenae (4), Acinetobacter sp. (3), Escherichia coli (3), Asaia sp. (1) and Pantoea sp. (1) as well as Gram-positive bacteria Bacillus subtilis (5) and Micrococcus luteus (5) in 10 isolates. Conclusion/Significance Our study provides new data on the microbiotic diversity of field-collected sand flies and for the first time, evidence of the presence of Asaia sp. in sand flies. We have also found a link between physiological stages (unfed, fresh fed, semi gravid and gravid) of sand flies and number of bacteria that they carry. Interestingly Pantoea sp. and Klebsiella ozaenae have been isolated in Old World sand fly species. The presence of latter species on sand fly cuticle and in the female midgut suggests a role for this arthropod in dissemination of these pathogenic bacteria in endemic areas. Further experiments are required to clearly delineate the vectorial role (passive or active) of sand flies.
Collapse
Affiliation(s)
- Mohammad Akhoundi
- Université de Reims Champagne-Ardenne, ANSES, EA4688 - USC, Transmission Vectorielle et Epidémiosurveillance de Maladies Parasitaires (VECPAR), Université de Reims Champagne-Ardenne, Faculté de Pharmacie, Reims, France
- Mycology and Parasitology Department, Pasteur Institute of Iran, Tehran, Iran
| | - Rounak Bakhtiari
- Department of Microbiology, School of Public Health and Institute Health Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Thomas Guillard
- UFR Médecine, SFR CAP-Santé (FED 4231), Université de Reims Champagne-Ardenne, Reims, France
- Laboratoire de Bactériologie, CHU de Reims, Hôpital Robert Debré, Reims, France
| | - Ahmad Baghaei
- Mycology and Parasitology Department, Pasteur Institute of Iran, Tehran, Iran
| | - Reza Tolouei
- Mycology and Parasitology Department, Pasteur Institute of Iran, Tehran, Iran
| | - Denis Sereno
- MIVEGEC, UMR IRD 224-CNRS 5290-UM1-UM2, Montpellier, France
| | - Dominique Toubas
- Unité MEDyC, FRE 3481 URCA CNRS, Université de Reims Champagne-Ardenne, Reims, France
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Hôpital Maison Blanche, Reims, France
| | - Jérôme Depaquit
- Université de Reims Champagne-Ardenne, ANSES, EA4688 - USC, Transmission Vectorielle et Epidémiosurveillance de Maladies Parasitaires (VECPAR), Université de Reims Champagne-Ardenne, Faculté de Pharmacie, Reims, France
- * E-mail:
| | | |
Collapse
|
30
|
|
31
|
Riegersperger M, Plischke M, Steiner-Boker S, Seidinger D, Winkelmayer W, Sunder-Plassmann G, Vlahovic P, Vlahovic P, Cvetkovic T, Djordjevic V, Velickovic-Radovanovic R, Stefanovic N, Ignjatovic A, Sladojevic N, Cademartori V, Massarino F, Parodi EL, Russo R, Sofia A, Fontana I, Viviani GL, Garibotto G, Mai M, Mai W, Taner B, Wadei H, Prendergast M, Gonwa T, Martin J, Martin J, Aurore S, Aline CS, Nicolas M, Manolie M, Catherine S, Eric A, Christophe M, Brakemeier S, Liefeldt L, Glander P, Waiser J, Lachmann N, Schonemann C, Zukunft B, Illigens P, Schmidt D, Wu K, Rudolph B, Neumayer HH, Budde K, Pallardo Mateu L, Gavela Martinez E, Sancho Calabuig A, Crespo Albiach J, Beltran Catalan S, Gavela Martinez E, Kanter Berga J, Kimura T, Yagisawa T, Ishikawa N, Sakuma Y, Hujiwara T, Nukui A, Yashi M, Duraes J, Malheiro J, Fonseca I, Rocha A, Martins LS, Almeida M, Dias L, Castro-Henriques A, Cabrita A, Mai M, Mai W, Wadei H, Prendergast M, Gonwa T, Volpe A, Quaglia M, Menegotto A, Fenoglio R, Izzo C, Airoldi A, Terrone C, Stratta P, Ahmed B, Mireille K, Nilufer B, Annick M, Karl Martin W, Anh-Dung H, Dimitri M, Philippe M, Judith R, Daniel A, Liefeldt L, Glander P, Glander P, Lan Y, Schmidt D, Heine C, Budde K, Neumayer HH, Schmidt D, Glander P, Glander P, Budde K, Neumayer HH, Liefeldt L, Quaglia M, Quaglia M, Capone V, Izzo C, Menegotto A, Fenoglio R, Airoldi A, Stratta P, Grace B, Clayton P, Cass A, Mcdonald S, Yagisawa T, Yagisawa T, Yashi M, Kimura T, Nukui A, Fujiwara T, Sakuma Y, Ishikawa N, Iwabuchi T, Muraishi O, Torregrosa V, Barros X, Martinez de Osaba MJ, Paschoalin R, Campistol JM, Hassan R, El-Hefnawy A, Soliman S, Shokeir A, Cobanoglu Kudu A, Gungor O, Kircelli F, Altinel E, Asci G, Ozbek SS, Toz H, Ok E, Sandrini S, Setti G, Valerio F, Possenti S, Torrisi I, Polanco N, Garcia-Puente L, Gonzalez Monte E, Morales E, Gutierrez E, Bengoa I, Hernandez A, Caballero J, Morales JM, Andres A, Sgarlato V, Sgarlato V, Comai G, La Manna G, Moretti I, Grandinetti V, Martelli D, Scolari MP, Stefoni S, Valentini C, Valentini C, Persici E, La Manna G, Cappuccilli ML, Sgarlato V, Liviano D'arcangelo G, Fabbrizio B, Carretta E, Mosconi G, Scolari MP, Feliciangeli G, Grigioni FW, Stefoni S, Apicella L, Guida B, Vitale S, Garofalo G, Russo L, Maresca I, Rossano R, Memoli B, Carrano R, Federico S, Sabbatini M, Carta P, Zanazzi M, DI Maria L, Caroti L, Miejshtri A, Tsalouchos A, Bertoni E, Sezer S, Erkmen Uyar M, Colak T, Bal Z, Tutal E, Kalaci G, Ozdemir Acar FN, Jacquelinet C, Bayat S, Pernin V, Portales P, Szwarc I, Garrigue V, Vetromile F, Delmas S, Eliaou JF, Mourad G, Huber L, Huber L, Slowinski T, Naik M, Glander P, Liefeldt L, Schmidt D, Neumayer HH, Budde K, Nakai K, Fujii H, Kono K, Goto S, Ishimura T, Takeda M, Fujisawa M, Nishi S, Pereira Paschoalin R, Paschoalin R, Torregrosa JV, Barros Freiria X, Duran Rebolledo CE, Sanchez Escuredo A, Sole M, Campistol JM, Youssouf S, Tabbasm F, Bell R, Al-Jayyousi R, Warwick G, Grall A, Treguer L, Essig M, Lecaque C, Noel N, Buchler M, Bertrand D, Rivalan J, Braun L, Villemain F, Hurault de Ligny B, Totet A, Pestourie N, Toubas D, Nevez G, Le Meur Y, Nour el Houda B, Mustapha H, Wafaa F, Inass L, Rambabova Bushljetikj I, Rambabova Bushljetikj I, Masin-Spasovska J, Spasovski G, Popov Z, Sikole A, Ivanovski N, Raimundo M, Guerra J, Teixeira C, Santana A, Silva S, Mil Homens C, Gomes Da Costa A, Loredo D, Cleres M, Gondolesi G, Gutierrez LM, Fortunato RM, Descalzi V, Raffaele P. Transplantation - clinical II. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs248] [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: 11/14/2022] Open
|
32
|
Wynckel A, Toubas D, Noël N, Toupance O, Rieu P. Outbreak of pneumocystis pneumonia occurring in late post-transplantation period. Nephrol Dial Transplant 2011; 26:2417; author reply 2418. [PMID: 21527541 DOI: 10.1093/ndt/gfr159] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
33
|
Albert O, Toubas D, Strady C, Cousson J, Delmas C, Vernet V, Villena I. Reactivity of (1→3)-β-d-glucan assay in bacterial bloodstream infections. Eur J Clin Microbiol Infect Dis 2011; 30:1453-60. [PMID: 21479838 DOI: 10.1007/s10096-011-1244-8] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Accepted: 03/21/2011] [Indexed: 10/18/2022]
Abstract
To diagnose invasive fungal infections, the detection of (1 → 3)-β-d-glucan in serum has shown variable specificity, depending on the targeted population. Several circumstances for false-positive results of beta-glucan tests have been identified, among which are severe bacterial infections. In this study, we measured (1 → 3)-β-d-glucan by the Fungitell test in the serum of 62 patients (one serum sample tested per patient) for whom invasive fungal infection was not suspected: 19 control subjects and 43 patients with bacteraemia. The test was interpretable for 58 sera: all 19 control subjects had negative beta-glucan test; among the 39 bacteraemic patients, we report 16 false-positive results. For the 22 patients undergoing bacteraemia due to Gram-negative bacilli, we observed 13 false-positive results (59%). Among the 17 patients with bloodstream infection involving Gram-positive cocci, three false-positive tests were recorded, but none in the eight cases of Streptococcus pneumoniae bacteraemia. Statistical analysis showed that beta-glucan levels were significantly higher in patients with Gram-negative bacilli bloodstream infection in comparison to those with bacteraemia due to Gram-positive cocci. These results were independent from other previously described causes for false-positive beta-glucan tests. These data might help physicians to interpret positive beta-glucan detection when an invasive fungal infection is suspected, especially for patients with bacterial infections.
Collapse
Affiliation(s)
- O Albert
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France.
| | | | | | | | | | | | | |
Collapse
|
34
|
Kauffmann-Lacroix C, Bousseau A, Dalle F, Brenier-Pinchart MP, Delhaes L, Machouart M, Gari-Toussaint M, Datry A, Lacroix C, Hennequin C, Toubas D, Morin O. [Prevention of fungal infections related to the water supply in French hospitals: proposal for standardization of methods]. Presse Med 2008; 37:751-9. [PMID: 18243636 DOI: 10.1016/j.lpm.2007.09.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2007] [Revised: 08/09/2007] [Accepted: 09/16/2007] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVES The aims of this study were to assess the risk of fungal infections related to the water supply in several hospitals and to clarify the appropriate methodology in order to standardize the technical conditions of the controls and develop guidelines. It was conducted in 10 university hospital centers across the country from February 2004 through March 2005. METHOD A preliminary study allowed us to optimize the mycological analysis. The study was conducted under the same conditions as for bacteriological controls: water filtration through a cellulose acetate membrane cultured on agar. Departments with the highest patient risk were selected, including hematology, organ transplantation, and burn units. We selected 98 sites and sampled both water and water-related surfaces at each: three one-liter water samples (the first flow, cold and hot water) and two or three surface samples (inside the tap, pommel of the shower and siphon). At each site, a form was filled to specify its location in the unit, any water treatment (chlorine or other), filtering, and temperature. Water from taps equipped with sterilized filtration was sampled without the filter. RESULTS There was a significant difference (p=0.039) in the number of positive cultures between the three types of water sampled: hot water (>50 degrees C) was colonized less often than first flow or cold water. Only 4% of the hot-water samples had positive cultures, compared to the 52% of the cold-water samples. Except in two hospitals with generalized contamination of the water pipes (one with Exophiala spp and the other with Fusarium spp), colonization was usually slight. Cold water was more colonized than hot water, but 79% of the samples yielded fewer than 5CFU/L. Dematiaceous hyphomycetes were isolated; Aspergillus spp were rare. The number of CFU in surface samples (that is, biofilms) was higher (mean=15 CFU per sample) but surfaces were positive less often than water (13% compared with 43% of all water samples). Sampling from siphons was productive more often than from taps (23%), but the molds isolated differed from those in the related water. Relations to bacterial flora and P. aeruginosa were also studied, together with the effects of chemical treatment. CONCLUSION Current regulations require only bacteriological survey. The absence of knowledge about the threshold of contamination at which there is a risk of nosocomial invasive fungal infections makes it difficult to impose routine monitoring. Mycological surveys of water are required during hospital renovation, plumbing work, pipe maintenance and when air samples are negative during nosocomial infection investigations.
Collapse
|
35
|
Essendoubi M, Toubas D, Lepouse C, Leon A, Bourgeade F, Pinon JM, Manfait M, Sockalingum GD. Epidemiological investigation and typing of Candida glabrata clinical isolates by FTIR spectroscopy. J Microbiol Methods 2007; 71:325-31. [DOI: 10.1016/j.mimet.2007.09.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2007] [Revised: 09/07/2007] [Accepted: 09/28/2007] [Indexed: 10/22/2022]
|
36
|
Toubas D, Essendoubi M, Adt I, Pinon JM, Manfait M, Sockalingum GD. FTIR spectroscopy in medical mycology: applications to the differentiation and typing of Candida. Anal Bioanal Chem 2006; 387:1729-37. [PMID: 17146624 DOI: 10.1007/s00216-006-1005-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2006] [Revised: 10/10/2006] [Accepted: 11/09/2006] [Indexed: 11/30/2022]
Abstract
The incidence of fungal infections, in particular candidiasis and aspergillosis, has considerably increased during the last three decades. This is mainly due to advances in medical treatments and technologies. In high risk patients (e.g. in haematology or intensive care), the prognosis of invasive candidiasis is relatively poor. Therefore, a rapid and correct identification of the infectious agent is important for an efficient and prompt therapy. Most clinical laboratories rely on conventional identification methods that are based on morphological, physiological and nutritional characteristics. However, these have their limitations because they are time-consuming and not always very accurate. Moreover, molecular methods may be required to determine the genetic relationship between the infectious strains, for instance in Candida outbreaks. In addition, the latter methods require time, expensive consumables and highly trained staff to be performed adequately. In this study, we have applied the FTIR spectroscopic approach to different situations encountered in routine mycological diagnosis. We show the potentials of this phenotypic approach, used in parallel with routine identification methods, for the differentiation of 3 frequently encountered Candida species (C. albicans, C. glabrata and C. krusei) by using both suspensions and microcolonies. This approach, developed for an early discrimination, may help in the initial choice of antifungal treatment. Furthermore, we demonstrate the feasibility of the method for intraspecies comparison (typing) of 3 Candida species (C. albicans, C. glabrata and C. parapsilosis), particularly when an outbreak is suspected.
Collapse
Affiliation(s)
- Dominique Toubas
- Laboratoire de Parasitologie-Mycologie, CHU de Reims, EA 3800, IFR53, Université de Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096 Reims Cedex, France
| | | | | | | | | | | |
Collapse
|
37
|
Adt I, Toubas D, Pinon JM, Manfait M, Sockalingum GD. FTIR spectroscopy as a potential tool to analyse structural modifications during morphogenesis of Candida albicans. Arch Microbiol 2006; 185:277-85. [PMID: 16474951 DOI: 10.1007/s00203-006-0094-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2005] [Revised: 09/27/2005] [Accepted: 01/24/2006] [Indexed: 11/26/2022]
Abstract
Candida albicans is a polymorphic organism that grows under certain conditions as blastospores, hyphae or pseudohyphae. The potentials of FTIR spectroscopy for assessing structural differences in C. albicans blastospores and hyphae were investigated. The main observed differences were localised in the polysaccharide (950-1,185 cm(-1)), protein (1,480-1,720 cm(-1)), and the fatty acids (2,840-3,000 cm(-1)) regions. Quantitative evaluation of differences between hyphae and blastospores by curve-fitting of these regions indicate that these modifications could be due to both changes in structure and content of components of the cell wall such as beta-glucans, mannoproteins, and lipids. Furthermore, glycogen consumption could be involved during hyphae elongation. Thus, FTIR spectroscopy can be an interesting tool to investigate differences in structure and in content between blastospores and hyphae. We also demonstrate through this study that differentiation of C. albicans clinical strains using hyphae is feasible, as this has been previously shown with blastospores. This preliminary work on identification of C. albicans using hyphae is a prelude to a larger clinical study for early typing within 7 h from a pure culture.
Collapse
Affiliation(s)
- Isabelle Adt
- Unité MéDIAN CNRS UMR 6142, UFR Pharmacie, IFR 53, Université de Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096, Reims CEDEX, France
| | | | | | | | | |
Collapse
|
38
|
Essendoubi M, Toubas D, Bouzaggou M, Pinon JM, Manfait M, Sockalingum GD. Rapid identification of Candida species by FT-IR microspectroscopy. Biochim Biophys Acta Gen Subj 2005; 1724:239-47. [PMID: 15951116 DOI: 10.1016/j.bbagen.2005.04.019] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2005] [Revised: 04/19/2005] [Accepted: 04/21/2005] [Indexed: 10/25/2022]
Abstract
Due to the continuous increase of human candidiasis and the great diversity of yeasts of the Candida genera, it is indispensable to identify this yeast as early as possible. Early identification enables an early diagnostic and patient-adapted anti-fungal therapy, thus reducing morbidity and mortality related to these infections. In view of this, we have in this study investigated microcolonies using a method based on Fourier transform-infrared microspectroscopy (FTIRM) for a rapid and early identification of the most frequent Candida species encountered in human pathology. FTIR spectroscopy is a whole-cell "fingerprinting" method by which microorganisms can be identified. By exploiting the huge discriminating capacity of this technique, we identified 6 species (Candida albicans, Candida glabrata, Candida parapsilosis, Candida tropicalis, Candida krusei, and Candida kefyr) from a collection of 57 clinical strains of Candida, isolated from hospitalised patients. Data obtained on 10- to 18-h-old microcolonies were compared to cultures of 24 h. Our results clearly show the efficiency and the robustness of FTIR (micro)spectroscopy in identifying species with a classification rate of 100% for both microcolonies and 24-h cultures. FTIR microspectroscopy is thus a promising clinical approach, because compared to conventional and molecular techniques, it is time and money saving, has great identification and discriminating potentials, and is amenable to an automated high-throughput routine system.
Collapse
Affiliation(s)
- Mohammed Essendoubi
- Unité MéDIAN, CNRS UMR 6142, UFR de Pharmacie, IFR53, Université de Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096 Reims Cedex, France
| | | | | | | | | | | |
Collapse
|
39
|
Mallié M, Bastide JM, Blancard A, Bonnin A, Bretagne S, Cambon M, Chandenier J, Chauveau V, Couprie B, Datry A, Feuilhade M, Grillot R, Guiguen C, Lavarde V, Letscher V, Linas MD, Michel A, Morin O, Paugam A, Piens MA, Raberin H, Tissot E, Toubas D, Wade A. In vitro susceptibility testing of Candida and Aspergillus spp. to voriconazole and other antifungal agents using Etest®: results of a French multicentre study. Int J Antimicrob Agents 2005; 25:321-8. [PMID: 15784312 DOI: 10.1016/j.ijantimicag.2004.11.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2004] [Accepted: 11/20/2004] [Indexed: 11/23/2022]
Abstract
Minimum inhibitory concentrations (MICs) of the antifungal agent voriconazole were determined using the Etest and compared with those of amphotericin B, itraconazole and fluconazole using 1986 clinical isolates of Candida spp. Voriconazole MICs were also compared with those of amphotericin B and itraconazole using 391 clinical isolates of Aspergillus spp. Voriconazole was found to have more potent activity and lower MIC values than amphotericin B, itraconazole and fluconazole against C. albicans, C. tropicalis, C. parapsilosis and C. kefyr. Against C. glabrata and C. krusei, voriconazole was more active than either of the other two azole antifungals but had similar activity to amphotericin B. For species of Aspergillus, MIC values of voriconazole were lower than those of amphotericin B and itraconazole against A. fumigatus and A. flavus, and were similar to those of amphotericin B against A. niger. Against A. terreus, MIC values for voriconazole and itraconazole were similar. A. terreus is known to be resistant to amphotericin B, and this was reflected in higher MIC values compared with those of voriconazole and itraconazole. Voriconazole therefore compares very favourably with other antifungal agents against a large number of clinical isolates of Candida and Aspergillus spp.
Collapse
Affiliation(s)
- M Mallié
- Laboratoire de Parasitologie-Mycologie Médicale, Faculté de Pharmacie, BP 14491, 15, Avenue Charles Flahault, 34093 Montpellier Cedex 5, France.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Deschamps F, Foudrinier F, Dherbecourt V, Mas P, Prevost E, Legrele AM, Bellier S, Toubas D. Respiratory diseases in French cork workers. Inhal Toxicol 2004; 15:1479-86. [PMID: 14648360 DOI: 10.1080/08958370390249120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
A cross-sectional study on suberosis was conducted in the Champagne-Ardenne County, France, to determine the prevalence of respiratory symptoms, the level of pulmonary function, and the presence of precipitins against Penicillium frequentans. Thirteen of the 33 workers exposed to cork dust had respiratory symptoms excluding hypersensitivity pneumonitis. The respiratory symptoms were not correlated with tobacco habits or duration of exposure. The levels of pulmonary function were not significantly impaired. No precipitin arc against Penicillium frequentans was found in the sera of exposed workers. The varied symptomatology of suberosis may point to several different diseases, each with its own determining factor. In the present study, exposure to weak humidity and low level of cork dust were related to asthma and chronic bronchitis only, excluding hypersensitivity pneumonitis.
Collapse
Affiliation(s)
- F Deschamps
- Département de Pathologies Professionnelles, UFR de Médecine, Université de Reims Champagne-Ardenne, Reims, France
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Sandt C, Sockalingum GD, Aubert D, Lepan H, Lepouse C, Jaussaud M, Leon A, Pinon JM, Manfait M, Toubas D. Use of Fourier-transform infrared spectroscopy for typing of Candida albicans strains isolated in intensive care units. J Clin Microbiol 2003; 41:954-9. [PMID: 12624015 PMCID: PMC150280 DOI: 10.1128/jcm.41.3.954-959.2003] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Comparative studies of Candida albicans strains are essential for proving cross-infections in epidemiological investigations. Typing of C. albicans strains is mainly based on genotypic methods. Fourier-transform infrared (FTIR) spectroscopy is described in this study as a novel phenotypic approach to the typing of C. albicans. The first step in the approach was the standardization of sample preparation (culture conditions and sampling parameters) and acquisition and classification parameters (spectral acquisition, spectral window selection, classification algorithm, and heterogeneity threshold). The second step consisted of validating the established parameters with a set of 79 strains of C. albicans isolated over 4 months from nine patients hospitalized in two intensive care units. Strains were isolated from multiple anatomical sites with repeated sampling. FTIR spectroscopy results were compared to randomly amplified polymorphic DNA (RAPD) results; this analysis showed that the amplification patterns of strains isolated from a given patient were identical and that different patients had different profiles. FTIR spectroscopy data were analyzed by hierarchical clustering performed with the second-derivative spectra. This classification revealed nine groups, one per patient. Only one spectrum out of 79 was misclassified by the FTIR spectroscopy method. RAPD and FTIR spectroscopy results were in good agreement, showing that, when nosocomial candidiasis transmission is suspected and urgent information is needed, this technique may be useful as a quick identification tool to give solid clues before confirmation by a genotypic method.
Collapse
Affiliation(s)
- C Sandt
- Unité MéDIAN CNRS UMR 6142, IFR 53, UFR de Pharmacie, Université de Reims-Champagne Ardenne, 51096 Reims Cedex, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Toubas D, Aubert D, Villena I, Foudrinier F, Chemla C, Pinon JM. Use of co-immunoelectrodiffusion to detect presumed disease-associated precipitating antibodies, and time-course value of specific isotypes in bird-breeder's disease. J Immunol Methods 2003; 272:135-45. [PMID: 12505719 DOI: 10.1016/s0022-1759(02)00436-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND AND OBJECTIVE The practical value of immunological diagnosis of bird-breeder's disease (BBD) is controversial, because of difficulties in distinguishing active disease patients from simple contact subjects. The aim of this study was to determine the diagnostic and prognostic value of (a) presumed disease-associated antibodies precipitating pigeon antigens (immunoglobulin A (IgAp) and P2 component), (b) characterization of specific isotypes (IgG, IgM, and IgA), and (c) antibody kinetics after antigen eradication. METHODS 405 subjects (775 sera) in contact with birds were studied [by means of co-immunoelectrodiffusion (Co-IED) and enzyme-linked immunofiltration (ELIFA)] with soluble extracts of pigeon droppings and squab crop milk. These patients were divided into two groups based on the final clinical evaluation of the patients' physicians, which was taken as the gold standard (positive in 90 and negative in 315 cases). RESULTS On the basis of this gold standard, the detection of presumed disease-associated precipitating antibodies by Co-IED had a specificity of 95.5%, a sensitivity of 98.7%, an accuracy of 98%, and positive and negative predictive values of 95.5% and 98.7%, respectively. Most of the patients with a final positive diagnosis of BBD had specific IgG, IgM, and IgA antibodies by ELIFA. After antigen eradication, anti IgAp and/or P2 antibodies disappeared more rapidly than other precipitating systems. CONCLUSION Identification by Co-IED of precipitating immune complexes IgAp and/or P2 significantly reinforces the intrinsic credibility of immunological diagnosis of BBD. Compared to these presumed disease-associated precipitating antibodies, detection and time course of specific IgM, IgA antibodies, provided no additional diagnostic value or prognostic arguments to judge disease activity after antigen eradication.
Collapse
Affiliation(s)
- Dominique Toubas
- Laboratoire de Parasitologie-Mycologie, CHU, Hôpital Maison Blanche, UPRES EA 2070, IFR 53 Biomolecules, Université de Reims Champagne-Ardenne, 45 rue Cognacq Jay, France
| | | | | | | | | | | |
Collapse
|
43
|
Witthuhn F, Toubas D, Béguinot I, Aubert D, Rouger C, Remy G, Pinon JM. Evaluation of the fungitest kit by using strains from human immunodeficiency virus-infected patients: study of azole drug susceptibility. J Clin Microbiol 1999; 37:864-6. [PMID: 9986878 PMCID: PMC84589 DOI: 10.1128/jcm.37.3.864-866.1999] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
One hundred eighteen Candida clinical isolates from human immunodeficiency virus-infected patients were tested for their susceptibilities to fluconazole and itraconazole by Fungitest and the National Committee for Clinical Laboratory Standards MIC method. Fungitest results depended on both yeast species and antifungal agents. This test is able to detect sensitive strains (97% agreement with results of the MIC method in tests with fluconazole and 84% agreement in tests with itraconazole) but has a poor capacity to detect resistant strains (26% agreement in tests with fluconazole and 5% agreement in tests with itraconazole).
Collapse
Affiliation(s)
- F Witthuhn
- Laboratoire de Parasitologie-Mycologie, Equipe 4 INSERM U 314, EA 2070, IFR 53, Centre Hospitalier Universitaire de Reims, France
| | | | | | | | | | | | | |
Collapse
|
44
|
Toubas D, Aubert D, Marnef F, Villena I, Pignon B, Léon A, Foudrinier F. [Characterization of specific IgG, IgM, IgA and IgE isotypes in profound candidiasis]. Ann Biol Clin (Paris) 1998; 56:329-36. [PMID: 9754265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Enzyme-linked immunofiltration assay technique (Elisa) has been applied to the characterization of G, M, A and E anti-Candida antibodies isotypes specific to cell wall mannans in 201 sera from 126 patients. These sera were studied at the same time using Co-immunoelectrodiffusion and indirect immunofluorescence. In 18 of 21 patients with systemic candidiasis, Elisa demonstrated the presence of antimannan IgG antibodies in sera contemporary of Candida positive blood culture. These IgG were associated with antimannan IgM, A and E in 15 patients. In 37 patients colonized with Candida, used as negative controls, antimannan IgG were detected in 3 cases, and in 2 were associated with specific IgMs. The sensitivity and specificity of Elisa IgM and IgA in the diagnosis of systemic Candidiasis were 85.7% and 81%, respectively. The kinetic study shows that the different isotypes appeared most of the time simultaneously. The evolution of the 4 isotypes beyond the acute episode was variable and without correlation with the clinical status. The decrease of IgG was slower than the one of IgM, IgA or IgE. The systematic research, in at risk patients, of antimannan antibodies using Elisa required simple technology. A simple method should allow to aim at other functional antigens which could be used in a quantitative manner to determine the efficacy of the medical treatment.
Collapse
Affiliation(s)
- D Toubas
- Laboratoire de parasitologie-mycologie, Equipe 4 Inserm U. 314, Upres EA 2070, IFR 53, Hôpital Maison-Blanche, Reims, France
| | | | | | | | | | | | | |
Collapse
|
45
|
Aubert D, Toubas D, Foudrinier F, Villena I, Gomez JE, Marx C, Lepan H, Lemaire P, Jacquier P, Bonhomme A, Pinon JM. Accelerated detection of DNA on membranes by automated enzyme-linked immunofiltration assay. Anal Biochem 1997; 247:25-9. [PMID: 9126366 DOI: 10.1006/abio.1997.2030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Methods used to detect DNA after transfer to nitro-cellulose or nylon membranes are all based on slow incubation with agitation. We describe an application of the ELIFA technique (enzyme-linked immunofiltration assay) for rapid detection of DNA immobilized on a membrane by active filtration of the reagents across the membrane. The different steps (saturation, hybridization to a nonisotopically labeled probe, washing, and immunoenzymatic revelation) are automated and controlled by a microcomputer that determines the direction of flow and flow rates of the solutions through the membrane. We applied this method to the detection of Toxoplasma gondii DNA in 108 samples of amniotic fluid during antenatal tests for toxoplasmosis and compared the results with those obtained by the conventional method. In addition to a major time saving (2 h against almost 15 h), automation improves reproducibility and avoids manipulation of the membranes between the different steps, while keeping the same sensitivity and specificity as the standard method.
Collapse
Affiliation(s)
- D Aubert
- Laboratoire de Parasitologie-Mycologie, UPRES EA2070, Equipe IV INSERM U314, IFR 53, Hôpital Maison-Blanche, Reims, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Toubas D, Prévost A, Deschamps F, Pinon JM. [Extrinsic allergic alveolitis of occupational origin]. Presse Med 1995; 24:1391-6. [PMID: 8545318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Occupational factors encountered in farming and other agricultural activities produce a particular risk for respiratory diseases. For some, such as extrinsic allergic alveolitis, diagnosis depends upon a range of epidemiological, clinical, radiological and immunological arguments. Farmer's lung is one of the most common form of extrinsic allergic alveolitis. Bird breeder's lung is another, the list is long. The environmental allergens likely to affect alveoli and interstitial tissues have been identified, but simple detection of antibodies does not constitute a pathognomonic criterion of extrinsic allergic alveolitis. Co-immuno-electrodiffusion is a rapid and sensitive technique for the demonstration of remarkable precipitating systems of extrinsic allergic alveolitis. This investigation enables subjects who really have the disease to be distinguished from contact subjects. Diagnosis is important to prevent development of a disabling and irreversible pulmonary fibrosis.
Collapse
Affiliation(s)
- D Toubas
- Laboratoire de Parasitologie-Mycologie, Hôpital Maison Blanche, Reims
| | | | | | | |
Collapse
|
47
|
Pinon JM, Toubas D, Marx C, Mougeot G, Bonnin A, Bonhomme A, Villaume M, Foudrinier F, Lepan H. Detection of specific immunoglobulin E in patients with toxoplasmosis. J Clin Microbiol 1990; 28:1739-43. [PMID: 2203811 PMCID: PMC268039 DOI: 10.1128/jcm.28.8.1739-1743.1990] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
An immunocapture assay was developed to detect Toxoplasma gondii-specific immunoglobulin E (IgE) in sera from adults with acute acquired infection or reactivation and from babies with congenital toxoplasmosis. The components of this assay were monoclonal antibody to human IgE, samples from patients, and T. gondii tachyzoites treated with Formalin. When T. gondii-specific IgE antibodies were present, visually detectable agglutination occurred. Sera, umbilical cord blood, fetal blood, cerebrospinal fluid, and amniotic fluid were tested by this method. Specific IgE antibodies were detected in sera from 25 (86%) of 29 adults who developed specific IgG antibody during pregnancy or had specific IgA and IgM antibodies. Specific IgE was present early during infection, at the time that IgM antibodies were present, and slightly preceding the presence of specific IgA antibodies. In 23 patients tested serially, IgE antibodies never persisted for longer than 4 months. No nonspecific anti-T. gondii IgE was detected in sera from uninfected individuals. Maternal IgE antibodies did not cross the placenta. In sera of patients with congenital toxoplasmosis, specific IgE antibodies were found at birth, during the first year of life, and during immunologic recrudescence following discontinuation of pyrimethamine-sulfonamide therapy. The IgE immunocapture assay is simple to perform. It is especially useful for determining when T. gondii was acquired by recently infected pregnant women.
Collapse
Affiliation(s)
- J M Pinon
- Laboratoire de Parasitologie, CHRU, Hôpital Maison Blanche, Reims, France
| | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Poirriez J, Toubas D, Marx-Chemla C, Leroux B, Dupouy D, Talmud M, Pinon JM. Isotypic characterization of anti-Toxoplasma gondii antibodies in 18 cases of congenital toxoplasmic chorioretinitis. Acta Ophthalmol 1989; 67:164-8. [PMID: 2658460 DOI: 10.1111/j.1755-3768.1989.tb00747.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A serological study was carried out by ELIFA (Enzyme Linked Immuno-Filtration Assay) for 50 children with congenital toxoplasmosis diagnosed by several parasitological and serological methods showing that the fetus had been infected by the parasite and had developed it's own specific immune response. At birth, anti-Toxoplasma gondii IgE antibodies were detected in the sera of 66% of the 18 children who had retinochoroiditis and in 32% of the 32 children without this complication. During the 4 months before or at the time of diagnosis of retinochoroiditis, specific IgE antibodies were detected in 70% of the 20 cases (2 children with 2 successive lesions); but during the 4 months following the discovery of ocular lesions, anti-Toxoplasma IgE antibodies were only detected in 30% of the 20 cases. Among all the 50 children, the prolonged detection of specific IgM + IgE association (for at least 4 months) was followed in 46% of cases by the appearance of chorioretinitis (predictive value).
Collapse
Affiliation(s)
- J Poirriez
- Department of Parasitology, Centre Hospitalo-Universitaire, Reims, France
| | | | | | | | | | | | | |
Collapse
|
49
|
Patey M, Delvincourt C, Toubas D, Schvartz H, Maes B, Pluot M, Caulet T. [Immunohistochemical study of plasmocytes and T-lymphocyte subpopulations in Hashimoto's thyroiditis]. Ann Pathol 1984; 4:259-65. [PMID: 6391512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In Hashimoto's thyroiditis, there is a diffuse interfollicular infiltration of lymphocytes and plasmocytes and lymphoid collections with germinal centers. Eleven cases of Hashimoto's disease were studied with immunocytochemical methods for characterization of intracytoplasmic immunoglobulins (IgA, IgG, IgM, Kappa and lambda light chains). Most of the cells are plasmocytes stained positively for intracytoplasmic IgG; IgA positive cells were less frequent and IgM positive cells are rare. Kappa positive plasma cells are more numerous than lambda positive cells in the germinal centers and the interfollicular infiltration. By an indirect immunofluorescence technique in frozen tissue, we have studied with four monoclonal antibodies (OKT3, OKT4, OKT8, B1) the T cells subsets populations in two cases.
Collapse
|