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Hartuis S, Lavergne RA, Nourrisson C, Verweij J, Desoubeaux G, Lussac-Sorton F, Lemoine JP, Cateau E, Jeddi F, Poirier P, Le Pape P, Morio F. The Novodiag ® Stool parasites assay, an innovative high-plex technique for fast detection of protozoa, helminths and microsporidia in stool samples: a retrospective and prospective study. Parasite 2022; 29:27. [PMID: 35550028 PMCID: PMC9102957 DOI: 10.1051/parasite/2022026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 04/25/2022] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES We provide the first evaluation of the CE-IVD marked Novodiag® stool parasites assay (NVD), allowing rapid and high-plex detection of 26 distinct targets, encompassing protozoans, helminths and microsporidia in stool samples. METHODS A total of 254 samples (n = 205 patients) were prospectively processed by the NVD and our routine procedure (RP). Performances of the NVD were compared with RP. Samples only positive by the NVD assay were investigated by external PCR assays. Sensitivity and specificity (Se/Sp) and time from sample receipt to results were determined for each method. The NVD was also evaluated against 77 additional samples positive for a wide range of parasites. RESULTS Overall positivity rate was 16.9% for RP compared with 34% using the NVD assay, and 164 samples (66%) were negative by both methods. Only 30 positive samples (12%) showed full concordance between RP and NVD. Fifty-three discordant samples were sent for external investigations. Except for Giardia intestinalis and Trichuris spp., higher Se was observed for the NVD assay for Blastocystis spp. (100% vs. 63%), Dientamoeba fragilis (100% vs. 0%), Schistosoma spp. (100% vs. 17%), and Enterobius vermicularis (100% vs. 67%) but roughly similar to RP for the remaining parasites tested. False-positive results were identified for Blastocystis spp., G. intestinalis, and Trichuris spp. using the NVD assay. The NVD mostly provides a diagnosis on the day of sample receipt compared with a mean of three days with RP. CONCLUSIONS Besides some limitations, the NVD is a new diagnostic strategy allowing rapid and high-plex detection of gastrointestinal parasites from unpreserved stools.
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Affiliation(s)
- Sophie Hartuis
- Nantes Université, CHU de Nantes, Cibles et Médicaments des Infections et de l’Immunité, IICiMed, UR1155 44000 Nantes France
| | - Rose-Anne Lavergne
- Nantes Université, CHU de Nantes, Cibles et Médicaments des Infections et de l’Immunité, IICiMed, UR1155 44000 Nantes France
| | - Céline Nourrisson
- Laboratoire de Parasitologie–Mycologie, Centre de Biologie, CHU Gabriel Montpied 58 rue Montalembert 63000 Clermont-Ferrand France
| | - Jaco Verweij
- Elisabeth-TweeSteden Hospital, Microvida Laboratory for Medical Microbiology and Immunology PO Box 90151 5000 Tilburg The Netherlands
| | - Guillaume Desoubeaux
- Service de Parasitologie – Mycologie – Médecine Tropicale, CHRU de Tours 2 Boulevard Tonnellé 37000 Tours France
| | - Florian Lussac-Sorton
- Laboratoire de Parasitologie–Mycologie PTMI – Groupe Hospitalier Pellegrin Place Amélie Raba Léon 33076 Bordeaux France
| | | | - Estelle Cateau
- Laboratoire de Parasitologie et Mycologie Médicales, CHU La Miletrie BP 577 86021 Poitiers Cedex France
| | - Fakhri Jeddi
- Nantes Université, CHU de Nantes, Cibles et Médicaments des Infections et de l’Immunité, IICiMed, UR1155 44000 Nantes France
| | - Philippe Poirier
- Laboratoire de Parasitologie–Mycologie, Centre de Biologie, CHU Gabriel Montpied 58 rue Montalembert 63000 Clermont-Ferrand France
| | - Patrice Le Pape
- Nantes Université, CHU de Nantes, Cibles et Médicaments des Infections et de l’Immunité, IICiMed, UR1155 44000 Nantes France
| | - Florent Morio
- Nantes Université, CHU de Nantes, Cibles et Médicaments des Infections et de l’Immunité, IICiMed, UR1155 44000 Nantes France
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Farfour E, Le Brun C, Mizrahi A, Bargain P, Durieux MF, Boquel F, Corvec S, Jeddi F, Muggeo A, Huguenin A, Barraud O, Amara M, Fihman V, Bailly E, Botterel F, Guillard T, Vasse M. Contribution of the anaerobic blood culture vial for the recovery of Candida glabrata: a retrospective multicentric study. Med Mycol 2022; 60:6566345. [DOI: 10.1093/mmy/myac021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 02/01/2022] [Indexed: 11/15/2022] Open
Abstract
Abstract
Although Candida spp are aerobic microorganisms, some Candida strains, mainly Candida glabrata, can be recovered from anaerobic blood culture vials. We assessed the contribution of the anaerobic vials for the diagnosis of candidemia, especially for C. glabrata. We conducted a multicenter retrospective study including eight University or regional hospitals. A single episode of monomicrobial candidemia per patient was included from September 1st, 2016, to August 31st, 2019. The characteristics of all aerobic and anaerobic blood culture vials sampled within 2 hours before and after the first positive blood culture vials were recorded (type of vials, result, and for positive vials time-to-positivity and Candida species). Overall, 509 episodes of candidemia were included. The main species were C. albicans (55.6%) followed by C. glabrata (17.1%), C. parapsilosis (4.9%), and C. tropicalis (4.5%). An anaerobic vial was positive in 76 (14.9%) of all episodes of which 56 (73.8%) were due to C. glabrata. The number of C. glabrata infections only positive in anaerobic vials was 1 (2.6%), 1 (11.1%), and 15 (37.5%) with the BACT/ALERT 3D the BACT/ALERT VIRTUO and the BACTEC FX instrument respectively (P < 0.01). The initial positivity of an anaerobic vial was highly predictive of the isolation of C. glabrata with the BACTEC FX (sensitivity of 96.8%). C. glabrata time-to-positivity was shorter in anaerobic vial than aerobic vial with all instruments. Anaerobic blood culture vials improve the recovery of Candida spp mainly C. glabrata. This study could be completed by further analyzes including mycological and pediatric vials.
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Affiliation(s)
- Eric Farfour
- Service de biologie clinique, Hôpital Foch, Suresnes, France
| | | | - Assaf Mizrahi
- Service de biologie, GH Paris Saint-Joseph, Paris, France
| | - Pauline Bargain
- Service de biologie, Hôpital A. Mignot, Le Chesnay-Rocquencourt, France
| | | | - Frédérique Boquel
- Unité de parasitologie-mycologie, Département de Prévention, diagnostic et traitement des infections. CHU Henri Mondor, APHP, Créteil, France
| | - Stéphane Corvec
- Service de Bactériologie et des contrôles microbiologiques des produits de santé, CHU de Nantes, Nantes, France
| | - Fakhri Jeddi
- Laboratoire de Parasitologie et Mycologie Médicale, CHU de Nantes, France
| | - Anaëlle Muggeo
- Université de Reims-Champagne-Ardenne, SFR CAP-Santé, Inserm UMR-S 1250 P3Cell, 51097, Reims, France; CHU Reims, Hôpital Robert Debré, France
- Laboratoire de Bactériologie-Virologie-Hygiène Hospitalière-Parasitologie-Mycologie, 51100, Reims, France
| | - Antoine Huguenin
- Laboratoire de Bactériologie-Virologie-Hygiène Hospitalière-Parasitologie-Mycologie, 51100, Reims, France
- EA 7510, ESCAPE, Laboratoire de Parasitologie-Mycologie, Université de Reims Champagne-Ardenne, 51 rue Cognacq Jay, 51092 Reims CEDEX, France
| | - Olivier Barraud
- Service de bactériologie- virologie-hygiène, CHU Limoges, Limoges, France
| | - Marlène Amara
- Service de biologie, Hôpital A. Mignot, Le Chesnay-Rocquencourt, France
| | - Vincent Fihman
- Bacteriology and Infection control Unit, Department of Prevention, Diagnosis, and Treatment of Infections, Henri-Mondor University Hospital, AP-HP, 94000 Créteil, France
- EA 7380 Dynamyc, EnvA, UPEC, Paris-Est University, Créteil, France
| | - Eric Bailly
- Service de Parasitologie-mycologie, CHU Bretonneau, Tours, France
| | - Françoise Botterel
- Unité de parasitologie-mycologie, Département de Prévention, diagnostic et traitement des infections. CHU Henri Mondor, APHP, Créteil, France
| | - Thomas Guillard
- Université de Reims-Champagne-Ardenne, SFR CAP-Santé, Inserm UMR-S 1250 P3Cell, 51097, Reims, France; CHU Reims, Hôpital Robert Debré, France
- Laboratoire de Bactériologie-Virologie-Hygiène Hospitalière-Parasitologie-Mycologie, 51100, Reims, France
| | - Marc Vasse
- Service de biologie clinique, Hôpital Foch, Suresnes, France
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Bussotti G, Benkahla A, Jeddi F, Souiaï O, Aoun K, Späth GF, Bouratbine A. Nuclear and mitochondrial genome sequencing of North-African Leishmania infantum isolates from cured and relapsed visceral leishmaniasis patients reveals variations correlating with geography and phenotype. Microb Genom 2020; 6:mgen000444. [PMID: 32975503 PMCID: PMC7660250 DOI: 10.1099/mgen.0.000444] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 09/13/2020] [Indexed: 12/19/2022] Open
Abstract
Although several studies have investigated genetic diversity of Leishmania infantum in North Africa, genome-wide analyses are lacking. Here, we conducted comparative analyses of nuclear and mitochondrial genomes of seven L. infantum isolates from Tunisia with the aim to gain insight into factors that drive genomic and phenotypic adaptation. Isolates were from cured (n=4) and recurrent (n=3) visceral leishmaniasis (VL) cases, originating from northern (n=2) and central (n=5) Tunisia, where respectively stable and emerging VL foci are observed. All isolates from relapsed patients were from Kairouan governorate (Centre); one showing resistance to the anti-leishmanial drug Meglumine antimoniate. Nuclear genome diversity of the isolates was analysed by comparison to the L. infantum JPCM5 reference genome. Kinetoplast maxi and minicircle sequences (1 and 59, respectively) were extracted from unmapped reads and identified by blast analysis against public data sets. The genome variation analysis grouped together isolates from the same geographical origins. Strains from the North were very different from the reference showing more than 34 587 specific single nucleotide variants, with one isolate representing a full genetic hybrid as judged by variant frequency. Composition of minicircle classes within isolates corroborated this geographical population structure. Read depth analysis revealed several significant gene copy number variations correlating with either geographical origin (amastin and Hsp33 genes) or relapse (CLN3 gene). However, no specific gene copy number variation was found in the drug-resistant isolate. In contrast, resistance was associated with a specific minicircle pattern suggesting Leishmania mitochondrial DNA as a potential novel source for biomarker discovery.
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Affiliation(s)
- Giovanni Bussotti
- Institut Pasteur, Hub Bioinformatique et biostatistique, 28 Rue du Dr Roux, 75015 Paris, France
- Institut Pasteur, INSERM U1201, Unité de Parasitologie moléculaire et Signalisation, Département des Parasites et Insectes vecteurs, 25 Rue du Dr Roux, 75015 Paris, France
| | - Alia Benkahla
- Laboratoire de recherche, LR 16IPT09, Bioinformatique, Biomathématiques et Biostatistiques, Institut Pasteur de Tunis, Université Tunis El-Manar, 13 Place Pasteur, Tunis, Tunisie
| | - Fakhri Jeddi
- Laboratoire de Parasitologie, Hôpital de la Timone, Marseille, France
- Laboratoire de Parasitologie et Mycologie Médicale, CHU de Nantes, Nantes, France
| | - Oussama Souiaï
- Laboratoire de recherche, LR 16IPT09, Bioinformatique, Biomathématiques et Biostatistiques, Institut Pasteur de Tunis, Université Tunis El-Manar, 13 Place Pasteur, Tunis, Tunisie
| | - Karim Aoun
- Laboratoire de recherche, LR 16IPT06, Parasitoses médicales, Biotechnologies et Biomolécules, Institut Pasteur de Tunis, Université Tunis El-Manar, 13 Place Pasteur, Tunis, Tunisie
| | - Gerald F. Späth
- Institut Pasteur, INSERM U1201, Unité de Parasitologie moléculaire et Signalisation, Département des Parasites et Insectes vecteurs, 25 Rue du Dr Roux, 75015 Paris, France
| | - Aïda Bouratbine
- Laboratoire de recherche, LR 16IPT06, Parasitoses médicales, Biotechnologies et Biomolécules, Institut Pasteur de Tunis, Université Tunis El-Manar, 13 Place Pasteur, Tunis, Tunisie
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4
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Jeddi F, Paugam C, Hartuis S, Denis-Musquer M, Sabou M, Lavergne RA, Muguet L, Le Pape P. Medicopsis romeroi nodular subcutaneous infection in a kidney transplant recipient. Int J Infect Dis 2020; 95:262-264. [PMID: 32339721 DOI: 10.1016/j.ijid.2020.04.028] [Citation(s) in RCA: 4] [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: 02/24/2020] [Revised: 04/06/2020] [Accepted: 04/07/2020] [Indexed: 11/16/2022] Open
Abstract
Phaeohyphomycosis is a set of fungal infections caused by various dematiaceous fungi such as coelomycetes. These infections can occur either in immunocompetent or immunocompromised patients like solid organ transplants. Here we describe a nodular lesion of the right hallux that occurred in a kidney transplant patient. Microscopic examination of the biopsy revealed fungal hyphae and culture was positive to a grey to black mould that lacked characteristic elements to be identified. Nucleic acid sequencing targeting the internal transcribed spacer of the ribosomal DNA identified this mould as Medicopsis romeroi. The patient benefited of an antifungal therapy with voriconazole associated with surgical excision of the lesion. No relapse of the lesion was observed during a six-month follow-up. In solid organ transplants, phaeohyphomycosis caused by Medicopsis romeroi are very rare with only 12 cases reported. The clinical history should be well assessed since the lesion can appear several years after a cutaneous trauma that happened in a tropical region. Therapy generally combines antifungals with surgical excision of the lesion in order to avoid any relapse or dissemination of the infection.
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Affiliation(s)
- Fakhri Jeddi
- Laboratoire de Parasitologie et Mycologie Médicale, CHU de Nantes, France; Département de Parasitologie et Mycologie Médicale, Université de Nantes, Nantes Atlantique Universités, EA1155 - IICiMed, Institut de Recherche en Santé 2, Nantes, France.
| | | | - Sophie Hartuis
- Laboratoire de Parasitologie et Mycologie Médicale, CHU de Nantes, France.
| | | | - Marcela Sabou
- Laboratoire de Parasitologie et Mycologie Médicale, CHU de Strasbourg, France.
| | - Rose-Anne Lavergne
- Laboratoire de Parasitologie et Mycologie Médicale, CHU de Nantes, France; Département de Parasitologie et Mycologie Médicale, Université de Nantes, Nantes Atlantique Universités, EA1155 - IICiMed, Institut de Recherche en Santé 2, Nantes, France.
| | | | - Patrice Le Pape
- Laboratoire de Parasitologie et Mycologie Médicale, CHU de Nantes, France; Département de Parasitologie et Mycologie Médicale, Université de Nantes, Nantes Atlantique Universités, EA1155 - IICiMed, Institut de Recherche en Santé 2, Nantes, France.
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5
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Gaisne R, Jeddi F, Morio F, Le Clerc QC, Hourmant M, Blancho G, Giral M, Cantarovich D, Dantal J, Ville S. Candida utilisfungaemia following endoscopic intervention on ureteral stent in a kidney transplant recipient: Case report and a review of the literature. Mycoses 2018; 61:594-599. [DOI: 10.1111/myc.12766] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 03/10/2018] [Accepted: 03/11/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Raphaël Gaisne
- Nephrology and Transplantation Department; Centre Hospitalier Universitaire; Nantes France
| | - Fakhri Jeddi
- Mycology Laboratory; Centre Hospitalier Universitaire; Nantes France
| | - Florent Morio
- Mycology Laboratory; Centre Hospitalier Universitaire; Nantes France
| | | | - Maryvonne Hourmant
- Nephrology and Transplantation Department; Centre Hospitalier Universitaire; Nantes France
| | - Gilles Blancho
- Nephrology and Transplantation Department; Centre Hospitalier Universitaire; Nantes France
| | - Magali Giral
- Nephrology and Transplantation Department; Centre Hospitalier Universitaire; Nantes France
| | - Diego Cantarovich
- Nephrology and Transplantation Department; Centre Hospitalier Universitaire; Nantes France
| | - Jacques Dantal
- Nephrology and Transplantation Department; Centre Hospitalier Universitaire; Nantes France
| | - Simon Ville
- Nephrology and Transplantation Department; Centre Hospitalier Universitaire; Nantes France
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6
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Lavergne RA, Kandel-Aznar C, Khatchatourian L, Garcia-Hermoso D, Jeddi F, Boutoille D, Morio F, Le Pape P. Emmonsia pasteuriana : une cause rare d’infection fongique chez l’immunodéprimé. J Mycol Med 2017. [DOI: 10.1016/j.mycmed.2017.04.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nabet C, Doumbo S, Jeddi F, Konaté S, Manciulli T, Fofana B, L'Ollivier C, Camara A, Moore S, Ranque S, Théra MA, Doumbo OK, Piarroux R. Genetic diversity of Plasmodium falciparum in human malaria cases in Mali. Malar J 2016; 15:353. [PMID: 27401016 PMCID: PMC4940954 DOI: 10.1186/s12936-016-1397-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Accepted: 06/15/2016] [Indexed: 11/25/2022] Open
Abstract
Background In Mali, Plasmodium falciparum malaria is highly endemic and remains stable despite the implementation of various malaria control measures. Understanding P. falciparum population structure variations across the country could provide new insights to guide malaria control programmes. In this study, P. falciparum genetic diversity and population structure in regions of varying patterns of malaria transmission in Mali were analysed. Methods A total of 648 blood isolates adsorbed onto filter papers during population surveillance surveys (December 2012–March 2013, October 2013) in four distinct sites of Mali were screened for the presence of P. falciparum via quantitative PCR (qPCR). Multiple loci variable number of tandem repeats analysis (MLVA) using eight microsatellite markers was then performed on positive qPCR samples. Complete genotypes were then analysed for genetic diversity, genetic differentiation and linkage disequilibrium. Results Of 156 qPCR-positive samples, complete genotyping of 112 samples was achieved. The parasite populations displayed high genetic diversity (mean He = 0.77), which was consistent with a high level of malaria transmission in Mali. Genetic differentiation was low (FST < 0.02), even between sites located approximately 900 km apart, thereby illustrating marked gene flux amongst parasite populations. The lack of linkage disequilibrium further revealed an absence of local clonal expansion, which was corroborated by the genotype relationship results. In contrast to the stable genetic diversity level observed throughout the country, mean multiplicity of infection increased from north to south (from 1.4 to 2.06) and paralleled malaria transmission levels observed locally. Conclusions In Mali, the high level of genetic diversity and the pronounced gene flux amongst P. falciparum populations may represent an obstacle to control malaria. Indeed, results suggest that parasite populations are polymorphic enough to adapt to their host and to counteract interventions, such as anti-malarial vaccination. Additionally, the panmictic parasite population structure imply that resistance traits may disseminate freely from one area to another, making control measures performed at a local level ineffective. Electronic supplementary material The online version of this article (doi:10.1186/s12936-016-1397-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Cécile Nabet
- UMR MD3 IP-TPT, Parasitology Laboratory, Timone Hospital, Aix-Marseilles University, Marseilles, France.
| | - Safiatou Doumbo
- Malaria Research and Training Centre, Parasitic Diseases Epidemiology Department, UMI 3189, University of Sciences, Technique and Technology, Bamako, Mali
| | - Fakhri Jeddi
- UMR MD3 IP-TPT, Parasitology Laboratory, Timone Hospital, Aix-Marseilles University, Marseilles, France
| | - Salimata Konaté
- Malaria Research and Training Centre, Parasitic Diseases Epidemiology Department, UMI 3189, University of Sciences, Technique and Technology, Bamako, Mali
| | - Tommaso Manciulli
- Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, Division of Infectious and Tropical Diseases and Hepatology, University of Pavia, Pavia, Italy
| | - Bakary Fofana
- Malaria Research and Training Centre, Parasitic Diseases Epidemiology Department, UMI 3189, University of Sciences, Technique and Technology, Bamako, Mali
| | - Coralie L'Ollivier
- UMR MD3 IP-TPT, Parasitology Laboratory, Timone Hospital, Aix-Marseilles University, Marseilles, France
| | - Aminata Camara
- Malaria Research and Training Centre, Parasitic Diseases Epidemiology Department, UMI 3189, University of Sciences, Technique and Technology, Bamako, Mali
| | - Sandra Moore
- UMR MD3 IP-TPT, Parasitology Laboratory, Timone Hospital, Aix-Marseilles University, Marseilles, France
| | - Stéphane Ranque
- UMR MD3 IP-TPT, Parasitology Laboratory, Timone Hospital, Aix-Marseilles University, Marseilles, France
| | - Mahamadou A Théra
- Malaria Research and Training Centre, Parasitic Diseases Epidemiology Department, UMI 3189, University of Sciences, Technique and Technology, Bamako, Mali
| | - Ogobara K Doumbo
- Malaria Research and Training Centre, Parasitic Diseases Epidemiology Department, UMI 3189, University of Sciences, Technique and Technology, Bamako, Mali
| | - Renaud Piarroux
- UMR MD3 IP-TPT, Parasitology Laboratory, Timone Hospital, Aix-Marseilles University, Marseilles, France
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Jeddi F, Yapo-Kouadio GC, Normand AC, Cassagne C, Marty P, Piarroux R. Performance assessment of two lysis methods for direct identification of yeasts from clinical blood cultures using MALDI-TOF mass spectrometry. Med Mycol 2016; 55:185-192. [PMID: 27281814 DOI: 10.1093/mmy/myw038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 04/08/2016] [Revised: 02/25/2016] [Accepted: 04/25/2016] [Indexed: 11/14/2022] Open
Abstract
In cases of fungal infection of the bloodstream, rapid species identification is crucial to provide adapted therapy and thereby ameliorate patient outcome. Currently, the commercial Sepsityper kit and the sodium-dodecyl sulfate (SDS) method coupled with MALDI-TOF mass spectrometry are the most commonly reported lysis protocols for direct identification of fungi from positive blood culture vials. However, the performance of these two protocols has never been compared on clinical samples. Accordingly, we performed a two-step survey on two distinct panels of clinical positive blood culture vials to identify the most efficient protocol, establish an appropriate log score (LS) cut-off, and validate the best method. We first compared the performance of the Sepsityper and the SDS protocols on 71 clinical samples. For 69 monomicrobial samples, mass spectrometry LS values were significantly higher with the SDS protocol than with the Sepsityper method (P < .0001), especially when the best score of four deposited spots was considered. Next, we established the LS cut-off for accurate identification at 1.7, based on specimen DNA sequence data. Using this LS cut-off, 66 (95.6%) and 46 (66.6%) isolates were correctly identified at the species level with the SDS and the Sepsityper protocols, respectively. In the second arm of the survey, we validated the SDS protocol on an additional panel of 94 clinical samples. Ninety-two (98.9%) of 93 monomicrobial samples were correctly identified at the species level (median LS = 2.061). Overall, our data suggest that the SDS method yields more accurate species identification of yeasts, than the Sepsityper protocol.
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Affiliation(s)
- Fakhri Jeddi
- Laboratoire de Parasitologie-Mycologie, CHU Timone, UMR MD3 Aix-Marseille Université, Marseille, France
| | - Gisèle Cha Yapo-Kouadio
- Laboratoire de Parasitologie-Mycologie, Centre Hospitalier Universitaire l'Archet, CS 23079 06202 Nice Cedex 3, France
| | - Anne-Cécile Normand
- Laboratoire de Parasitologie-Mycologie, CHU Timone, UMR MD3 Aix-Marseille Université, Marseille, France
| | - Carole Cassagne
- Laboratoire de Parasitologie-Mycologie, CHU Timone, UMR MD3 Aix-Marseille Université, Marseille, France
| | - Pierre Marty
- Laboratoire de Parasitologie-Mycologie, Centre Hospitalier Universitaire l'Archet, CS 23079 06202 Nice Cedex 3, France.,INSERM, U1065, Centre Méditerranéen de Médecine Moléculaire, C3M, Toxines Microbiennes dans la Relation Hôte-Pathogènes, Nice F-06204 Cedex 3, France.,Université de Nice Sophia Antipolis, Faculté de Médecine, Nice F-06107 Cedex 2, France
| | - Renaud Piarroux
- Laboratoire de Parasitologie-Mycologie, CHU Timone, UMR MD3 Aix-Marseille Université, Marseille, France
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9
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Nabet C, Doumbo S, Jeddi F, Sagara I, Manciulli T, Tapily A, L'Ollivier C, Djimde A, Doumbo OK, Piarroux R. Analyzing Deoxyribose Nucleic Acid from Malaria Rapid Diagnostic Tests to Study Plasmodium falciparum Genetic Diversity in Mali. Am J Trop Med Hyg 2016; 94:1259-65. [PMID: 27001760 DOI: 10.4269/ajtmh.15-0832] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 02/15/2016] [Indexed: 11/07/2022] Open
Abstract
We evaluated the use of positive malaria rapid diagnostic tests (mRDTs) to determine genetic diversity of Plasmodium falciparum in Mali. Genetic diversity was assessed via multiple loci variable number of tandem repeats analysis (MLVA). We performed DNA extraction from 104 positive and 30 negative used mRDTs that had been stored at ambient temperature for up to 14 months. Extracted DNA was analyzed via quantitative polymerase chain reaction (qPCR), and MLVA genotyping was then assessed on positive qPCR samples. Eighty-three of the positive mRDTs (83/104, 79.8%) and none of the negative mRDTs were confirmed P. falciparum positive via qPCR. We achieved complete genotyping of 90.4% (75/83) of the qPCR-positive samples. Genotyping revealed high genetic diversity among P. falciparum populations in Mali and an absence of population clustering. We show that mRDTs are useful to monitor P. falciparum genetic diversity and thereby can provide essential data to guide malaria control programs.
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Affiliation(s)
- Cécile Nabet
- UMR MD3 Infections Parasitaires Transmission Pharmacologie et Thérapeutique (IP-TPT), Aix-Marseille University, Marseilles, France; Parasitology Laboratory, Timone Hospital, Marseilles, France; Malaria Research and Training Center, Department of Epidemiology of Parasitic Diseases, UMI 3189, Faculty of Medicine and Dentistry, University of Sciences, Techniques and Technology, Bamako, Mali; University of Pavia, Pavia, Italy
| | - Safiatou Doumbo
- UMR MD3 Infections Parasitaires Transmission Pharmacologie et Thérapeutique (IP-TPT), Aix-Marseille University, Marseilles, France; Parasitology Laboratory, Timone Hospital, Marseilles, France; Malaria Research and Training Center, Department of Epidemiology of Parasitic Diseases, UMI 3189, Faculty of Medicine and Dentistry, University of Sciences, Techniques and Technology, Bamako, Mali; University of Pavia, Pavia, Italy
| | - Fakhri Jeddi
- UMR MD3 Infections Parasitaires Transmission Pharmacologie et Thérapeutique (IP-TPT), Aix-Marseille University, Marseilles, France; Parasitology Laboratory, Timone Hospital, Marseilles, France; Malaria Research and Training Center, Department of Epidemiology of Parasitic Diseases, UMI 3189, Faculty of Medicine and Dentistry, University of Sciences, Techniques and Technology, Bamako, Mali; University of Pavia, Pavia, Italy
| | - Issaka Sagara
- UMR MD3 Infections Parasitaires Transmission Pharmacologie et Thérapeutique (IP-TPT), Aix-Marseille University, Marseilles, France; Parasitology Laboratory, Timone Hospital, Marseilles, France; Malaria Research and Training Center, Department of Epidemiology of Parasitic Diseases, UMI 3189, Faculty of Medicine and Dentistry, University of Sciences, Techniques and Technology, Bamako, Mali; University of Pavia, Pavia, Italy
| | - Tommaso Manciulli
- UMR MD3 Infections Parasitaires Transmission Pharmacologie et Thérapeutique (IP-TPT), Aix-Marseille University, Marseilles, France; Parasitology Laboratory, Timone Hospital, Marseilles, France; Malaria Research and Training Center, Department of Epidemiology of Parasitic Diseases, UMI 3189, Faculty of Medicine and Dentistry, University of Sciences, Techniques and Technology, Bamako, Mali; University of Pavia, Pavia, Italy
| | - Amadou Tapily
- UMR MD3 Infections Parasitaires Transmission Pharmacologie et Thérapeutique (IP-TPT), Aix-Marseille University, Marseilles, France; Parasitology Laboratory, Timone Hospital, Marseilles, France; Malaria Research and Training Center, Department of Epidemiology of Parasitic Diseases, UMI 3189, Faculty of Medicine and Dentistry, University of Sciences, Techniques and Technology, Bamako, Mali; University of Pavia, Pavia, Italy
| | - Coralie L'Ollivier
- UMR MD3 Infections Parasitaires Transmission Pharmacologie et Thérapeutique (IP-TPT), Aix-Marseille University, Marseilles, France; Parasitology Laboratory, Timone Hospital, Marseilles, France; Malaria Research and Training Center, Department of Epidemiology of Parasitic Diseases, UMI 3189, Faculty of Medicine and Dentistry, University of Sciences, Techniques and Technology, Bamako, Mali; University of Pavia, Pavia, Italy
| | - Abdoulaye Djimde
- UMR MD3 Infections Parasitaires Transmission Pharmacologie et Thérapeutique (IP-TPT), Aix-Marseille University, Marseilles, France; Parasitology Laboratory, Timone Hospital, Marseilles, France; Malaria Research and Training Center, Department of Epidemiology of Parasitic Diseases, UMI 3189, Faculty of Medicine and Dentistry, University of Sciences, Techniques and Technology, Bamako, Mali; University of Pavia, Pavia, Italy
| | - Ogobara K Doumbo
- UMR MD3 Infections Parasitaires Transmission Pharmacologie et Thérapeutique (IP-TPT), Aix-Marseille University, Marseilles, France; Parasitology Laboratory, Timone Hospital, Marseilles, France; Malaria Research and Training Center, Department of Epidemiology of Parasitic Diseases, UMI 3189, Faculty of Medicine and Dentistry, University of Sciences, Techniques and Technology, Bamako, Mali; University of Pavia, Pavia, Italy
| | - Renaud Piarroux
- UMR MD3 Infections Parasitaires Transmission Pharmacologie et Thérapeutique (IP-TPT), Aix-Marseille University, Marseilles, France; Parasitology Laboratory, Timone Hospital, Marseilles, France; Malaria Research and Training Center, Department of Epidemiology of Parasitic Diseases, UMI 3189, Faculty of Medicine and Dentistry, University of Sciences, Techniques and Technology, Bamako, Mali; University of Pavia, Pavia, Italy
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Pomares C, Marty P, Bañuls AL, Lemichez E, Pratlong F, Faucher B, Jeddi F, Moore S, Michel G, Aluru S, Piarroux R, Hide M. Genetic Diversity and Population Structure of Leishmania infantum from Southeastern France: Evaluation Using Multi-Locus Microsatellite Typing. PLoS Negl Trop Dis 2016; 10:e0004303. [PMID: 26808522 PMCID: PMC4726517 DOI: 10.1371/journal.pntd.0004303] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 11/24/2015] [Indexed: 01/30/2023] Open
Abstract
In the south of France, Leishmania infantum is responsible for numerous cases of canine leishmaniasis (CanL), sporadic cases of human visceral leishmaniasis (VL) and rare cases of cutaneous and muco-cutaneous leishmaniasis (CL and MCL, respectively). Several endemic areas have been clearly identified in the south of France including the Pyrénées-Orientales, Cévennes (CE), Provence (P), Alpes-Maritimes (AM) and Corsica (CO). Within these endemic areas, the two cities of Nice (AM) and Marseille (P), which are located 150 km apart, and their surroundings, concentrate the greatest number of French autochthonous leishmaniasis cases. In this study, 270 L. infantum isolates from an extended time period (1978–2011) from four endemic areas, AM, P, CE and CO, were assessed using Multi-Locus Microsatellite Typing (MLMT). MLMT revealed a total of 121 different genotypes with 91 unique genotypes and 30 repeated genotypes. Substantial genetic diversity was found with a strong genetic differentiation between the Leishmania populations from AM and P. However, exchanges were observed between these two endemic areas in which it seems that strains spread from AM to P. The genetic differentiations in these areas suggest strong epidemiological structuring. A model-based analysis using STRUCTURE revealed two main populations: population A (consisting of samples primarily from the P and AM endemic areas with MON-1 and non-MON-1 strains) and population B consisting of only MON-1 strains essentially from the AM endemic area. For four patients, we observed several isolates from different biological samples which provided insight into disease relapse and re-infection. These findings shed light on the transmission dynamics of parasites in humans. However, further data are required to confirm this hypothesis based on a limited sample set. This study represents the most extensive population analysis of L. infantum strains using MLMT conducted in France. In the south of France, the parasite Leishmania infantum is responsible for diseases that primarily affect dogs but can also impact humans. Several endemic areas have been clearly identified in the south of France including the Pyrénées-Orientales, Cévennes (CE), Provence (P), Alpes-Maritimes (AM) and Corsica (CO). In this study, 270 L. infantum isolates from four endemic areas, AM, P, CE and CO, were assessed using Multi-Locus Microsatellite Typing (MLMT), a tool applied for population genetic studies. MLMT revealed a strong genetic differentiation between the Leishmania populations from AM and P with exchanges observed between these two endemic areas. For four patients, the occurrence of disease relapses and re-infections was examined. These findings shed light on the transmission dynamics of parasites in humans. This study represents the most extensive population analysis of L. infantum isolates using MLMT conducted in France.
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Affiliation(s)
- Christelle Pomares
- INSERM, U1065, Centre Méditerranéen de Médecine Moléculaire, C3M, Toxines Microbiennes dans la Relation Hôte–Pathogènes, Nice, France
- Université de Nice Sophia Antipolis, Faculté de Médecine, Nice, France
- Parasitologie-Mycologie, Centre Hospitalier Universitaire l’Archet, CS 23079 06202, Nice, France
- * E-mail:
| | - Pierre Marty
- INSERM, U1065, Centre Méditerranéen de Médecine Moléculaire, C3M, Toxines Microbiennes dans la Relation Hôte–Pathogènes, Nice, France
- Université de Nice Sophia Antipolis, Faculté de Médecine, Nice, France
- Parasitologie-Mycologie, Centre Hospitalier Universitaire l’Archet, CS 23079 06202, Nice, France
| | - Anne Laure Bañuls
- UMR MIVEGEC IRD 224-CNRS 5290-Université Montpellier, Montpellier, France
| | - Emmanuel Lemichez
- INSERM, U1065, Centre Méditerranéen de Médecine Moléculaire, C3M, Toxines Microbiennes dans la Relation Hôte–Pathogènes, Nice, France
| | - Francine Pratlong
- UMR MIVEGEC IRD 224-CNRS 5290-Université Montpellier, Montpellier, France
- Département de Parasitologie–Mycologie, CHRU de Montpellier, Centre National de Référence des Leishmanioses, Montpellier, France
| | - Benoît Faucher
- Service des Maladies Infectieuses, CHU Hôpital Nord, Assistance Publique-Hôpitaux de Marseille, Marseille, France
| | - Fakhri Jeddi
- Aix-Marseille Université, UMR MD3, Marseille, France
| | - Sandy Moore
- Aix-Marseille Université, UMR MD3, Marseille, France
| | - Grégory Michel
- INSERM, U1065, Centre Méditerranéen de Médecine Moléculaire, C3M, Toxines Microbiennes dans la Relation Hôte–Pathogènes, Nice, France
| | - Srikanth Aluru
- INSERM, U1065, Centre Méditerranéen de Médecine Moléculaire, C3M, Toxines Microbiennes dans la Relation Hôte–Pathogènes, Nice, France
- Aix–Marseille Université, Marseille, France
| | | | - Mallorie Hide
- UMR MIVEGEC IRD 224-CNRS 5290-Université Montpellier, Montpellier, France
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Cassagne C, Normand AC, Bonzon L, L'Ollivier C, Gautier M, Jeddi F, Ranque S, Piarroux R. Routine identification and mixed species detection in 6,192 clinical yeast isolates. Med Mycol 2015; 54:256-65. [DOI: 10.1093/mmy/myv095] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 10/04/2015] [Indexed: 11/14/2022] Open
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Moore S, Miwanda B, Sadji AY, Thefenne H, Jeddi F, Rebaudet S, de Boeck H, Bidjada B, Depina JJ, Bompangue D, Abedi AA, Koivogui L, Keita S, Garnotel E, Plisnier PD, Ruimy R, Thomson N, Muyembe JJ, Piarroux R. Relationship between Distinct African Cholera Epidemics Revealed via MLVA Haplotyping of 337 Vibrio cholerae Isolates. PLoS Negl Trop Dis 2015; 9:e0003817. [PMID: 26110870 PMCID: PMC4482140 DOI: 10.1371/journal.pntd.0003817] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 05/06/2015] [Indexed: 11/29/2022] Open
Abstract
Background Since cholera appeared in Africa during the 1970s, cases have been reported on the continent every year. In Sub-Saharan Africa, cholera outbreaks primarily cluster at certain hotspots including the African Great Lakes Region and West Africa. Methodology/Principal Findings In this study, we applied MLVA (Multi-Locus Variable Number Tandem Repeat Analysis) typing of 337 Vibrio cholerae isolates from recent cholera epidemics in the Democratic Republic of the Congo (DRC), Zambia, Guinea and Togo. We aimed to assess the relationship between outbreaks. Applying this method, we identified 89 unique MLVA haplotypes across our isolate collection. MLVA typing revealed the short-term divergence and microevolution of these Vibrio cholerae populations to provide insight into the dynamics of cholera outbreaks in each country. Our analyses also revealed strong geographical clustering. Isolates from the African Great Lakes Region (DRC and Zambia) formed a closely related group, while West African isolates (Togo and Guinea) constituted a separate cluster. At a country-level scale our analyses revealed several distinct MLVA groups, most notably DRC 2011/2012, DRC 2009, Zambia 2012 and Guinea 2012. We also found that certain MLVA types collected in the DRC persisted in the country for several years, occasionally giving rise to expansive epidemics. Finally, we found that the six environmental isolates in our panel were unrelated to the epidemic isolates. Conclusions/Significance To effectively combat the disease, it is critical to understand the mechanisms of cholera emergence and diffusion in a region-specific manner. Overall, these findings demonstrate the relationship between distinct epidemics in West Africa and the African Great Lakes Region. This study also highlights the importance of monitoring and analyzing Vibrio cholerae isolates. Cholera is caused by the toxigenic bacterium Vibrio cholerae. Since cholera was imported into the West African country of Guinea in 1970, cases have been reported on the continent every year. In Sub-Saharan Africa, cholera occurs in a heterogeneous manner; outbreaks primarily cluster at certain hotspots including the African Great Lakes Region and West Africa. To gain further insight into the mechanisms by which cholera outbreaks emerge and diffuse, we performed genetic analyses of 337 Vibrio cholera isolates from the Democratic Republic of the Congo (DRC), Zambia, Guinea and Togo. Isolates from both patients and environmental samples were examined. Our findings demonstrate the relationship between distinct epidemics in West Africa and the African Great Lakes Region. For example, certain strains in the DRC have circulated in the region over a period of several years, occasionally giving rise to expansive epidemics. We also found that the six environmental isolates in our panel were unrelated to the epidemic isolates. Such insight into the country- and region-specific dynamics of the disease is critical to implement optimized public health strategies to control and prevent cholera epidemics. This study also highlights the importance of analyzing Vibrio cholerae isolates to complement epidemiological studies.
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Affiliation(s)
- Sandra Moore
- Department of Parasitology and Mycology, Assistance Publique—Hôpitaux de Marseille/Aix-Marseille University, UMR MD3, Marseille, France
| | - Berthe Miwanda
- Institut National de Recherche Biomédicale, Ministry of Public Health, Kinshasa, Democratic Republic of the Congo
| | - Adodo Yao Sadji
- Department of Bacteriology, National Institute of Hygiene, Lomé, Togo
| | | | - Fakhri Jeddi
- Department of Parasitology and Mycology, Assistance Publique—Hôpitaux de Marseille/Aix-Marseille University, UMR MD3, Marseille, France
| | - Stanislas Rebaudet
- Department of Parasitology and Mycology, Assistance Publique—Hôpitaux de Marseille/Aix-Marseille University, UMR MD3, Marseille, France
| | - Hilde de Boeck
- Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Bawimodom Bidjada
- Department of Bacteriology, National Institute of Hygiene, Lomé, Togo
| | | | - Didier Bompangue
- Institut National de Recherche Biomédicale, Ministry of Public Health, Kinshasa, Democratic Republic of the Congo
- Department of Microbiology, Faculty of Medicine, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
- Laboratoire Chrono-Environnement, UMR 6249, CNRS, University of Franche-Comte, Besançon, France
| | | | - Lamine Koivogui
- Institut National de Santé Publique, Conakry, Republic of Guinea
| | - Sakoba Keita
- Division Prévention et Lutte contre la Maladie, Ministère de la Santé Publique et de l’Hygiène Publique, Conakry, Republic of Guinea
| | - Eric Garnotel
- Hôpital d'Instruction des Armées Laveran, Marseille, France
| | | | - Raymond Ruimy
- Clinical Research Department, Nice University Hospital, Nice, France
| | - Nicholas Thomson
- Pathogen Genomics, Wellcome Trust Sanger Institute, Hinxton, Cambridge, United Kingdom
- London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Jean-Jacques Muyembe
- Institut National de Recherche Biomédicale, Ministry of Public Health, Kinshasa, Democratic Republic of the Congo
- Department of Microbiology, Faculty of Medicine, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Renaud Piarroux
- Department of Parasitology and Mycology, Assistance Publique—Hôpitaux de Marseille/Aix-Marseille University, UMR MD3, Marseille, France
- * E-mail:
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Cassagne C, Pratlong F, Jeddi F, Benikhlef R, Aoun K, Normand AC, Faraut F, Bastien P, Piarroux R. Identification of Leishmania at the species level with matrix-assisted laser desorption ionization time-of-flight mass spectrometry. Clin Microbiol Infect 2014; 20:551-7. [DOI: 10.1111/1469-0691.12387] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 08/28/2013] [Accepted: 08/30/2013] [Indexed: 11/26/2022]
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Jeddi F, Piarroux R, Mary C. Application of the NucliSENS easyMAG system for nucleic acid extraction: optimization of DNA extraction for molecular diagnosis of parasitic and fungal diseases. ACTA ACUST UNITED AC 2013; 20:52. [PMID: 24331004 PMCID: PMC3859032 DOI: 10.1051/parasite/2013051] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [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: 07/11/2013] [Accepted: 11/28/2013] [Indexed: 01/29/2023]
Abstract
During the last 20 years, molecular biology techniques have propelled the diagnosis of parasitic diseases into a new era, as regards assay speed, sensitivity, and parasite characterization. However, DNA extraction remains a critical step and should be adapted for diagnostic and epidemiological studies. The aim of this report was to document the constraints associated with DNA extraction for the diagnosis of parasitic diseases and illustrate the adaptation of an automated extraction system, NucliSENS easyMAG, to these constraints, with a critical analysis of system performance. Proteinase K digestion of samples is unnecessary with the exception of solid tissue preparation. Mechanically grinding samples prior to cell lysis enhances the DNA extraction rate of fungal cells. The effect of host-derived nucleic acids on the extraction efficiency of parasite DNA varies with sample host cell density. The optimal cell number for precise parasite quantification ranges from 10 to 100,000 cells. Using the NucliSENS easyMAG technique, the co-extraction of inhibitors is reduced, with an exception for whole blood, which requires supplementary extraction steps to eliminate inhibitors.
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Affiliation(s)
- Fakhri Jeddi
- Aix-Marseille Université, Faculté de Médecine, UMR MD3, 13284 Marseille, France - APHM, Hôpital de la Timone, Laboratoire de Parasitologie-Mycologie, 13385 Marseille, France
| | - Renaud Piarroux
- Aix-Marseille Université, Faculté de Médecine, UMR MD3, 13284 Marseille, France - APHM, Hôpital de la Timone, Laboratoire de Parasitologie-Mycologie, 13385 Marseille, France
| | - Charles Mary
- Aix-Marseille Université, Faculté de Médecine, UMR MD3, 13284 Marseille, France - APHM, Hôpital de la Timone, Laboratoire de Parasitologie-Mycologie, 13385 Marseille, France
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Ben-Ahmed K, Aoun K, Jeddi F, Ghrab J, El-Aroui MA, Bouratbine A. Visceral Leishmaniasis in Tunisia: Spatial Distribution and Association with Climatic Factors. Am J Trop Med Hyg 2009. [DOI: 10.4269/ajtmh.81.1.40] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Kais Ben-Ahmed
- Laboratoire de Recherche 05SP03, Laboratoire de Parasitologie, Institut Pasteur de Tunis, Tunis, Tunisia; Laboratoire de Recherche Opérationnelle de Décision et de Contrôle de Processus, Institut Superieur de Gestion de Tunis, Tunis, Tunisia
| | - Karim Aoun
- Laboratoire de Recherche 05SP03, Laboratoire de Parasitologie, Institut Pasteur de Tunis, Tunis, Tunisia; Laboratoire de Recherche Opérationnelle de Décision et de Contrôle de Processus, Institut Superieur de Gestion de Tunis, Tunis, Tunisia
| | - Fakhri Jeddi
- Laboratoire de Recherche 05SP03, Laboratoire de Parasitologie, Institut Pasteur de Tunis, Tunis, Tunisia; Laboratoire de Recherche Opérationnelle de Décision et de Contrôle de Processus, Institut Superieur de Gestion de Tunis, Tunis, Tunisia
| | - Jamila Ghrab
- Laboratoire de Recherche 05SP03, Laboratoire de Parasitologie, Institut Pasteur de Tunis, Tunis, Tunisia; Laboratoire de Recherche Opérationnelle de Décision et de Contrôle de Processus, Institut Superieur de Gestion de Tunis, Tunis, Tunisia
| | - Mhamed-Ali El-Aroui
- Laboratoire de Recherche 05SP03, Laboratoire de Parasitologie, Institut Pasteur de Tunis, Tunis, Tunisia; Laboratoire de Recherche Opérationnelle de Décision et de Contrôle de Processus, Institut Superieur de Gestion de Tunis, Tunis, Tunisia
| | - Aïda Bouratbine
- Laboratoire de Recherche 05SP03, Laboratoire de Parasitologie, Institut Pasteur de Tunis, Tunis, Tunisia; Laboratoire de Recherche Opérationnelle de Décision et de Contrôle de Processus, Institut Superieur de Gestion de Tunis, Tunis, Tunisia
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Ben-Ahmed K, Aoun K, Jeddi F, Ghrab J, El-Aroui MA, Bouratbine A. Visceral leishmaniasis in Tunisia: spatial distribution and association with climatic factors. Am J Trop Med Hyg 2009; 81:40-45. [PMID: 19556564] [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: 05/28/2023] Open
Abstract
Visceral leishmaniasis (VL) cases in children less than five years of age were recorded from 1996 through 2006 from Tunisian pediatric departments. Mean incidence rates were calculated for each of the 215 districts in the study area. Averages of annual rainfall and extreme values of low temperatures in winter and high temperatures in summer were used to characterize the climate of each district according to its continentality index and bioclimatic zone. A geographic information system and a local indicator of spatial association were used to summarize the spatial properties of VL distribution. Poisson spatial regression was performed to study the relationship between VL incidence rates and climatic parameters. We identified one hot-spot region of 35 inland districts located mostly in the semi-arid bioclimatic zone and two cold-spots located in coastal regions of the northeastern sub-humid zone and the southeastern arid zone. The incidence rate of VL was positively correlated with mean yearly rainfall and continentality index.
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Affiliation(s)
- Kais Ben-Ahmed
- Laboratoire de Recherche 05SP03, Institut Pasteur de Tunis, Tunis, Tunisia
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Jeddi F, Caumes E, Jauréguiberry S, Buffet PA, Thellier M, Mazier D. Drug Hypersensitivity Syndrome Induced by Meglumine Antimoniate. Am J Trop Med Hyg 2009. [DOI: 10.4269/ajtmh.2009.80.939] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Jeddi F, Caumes E, Thellier M, Jauréguiberry S, Mazier D, Buffet PA. Drug hypersensitivity syndrome induced by meglumine antimoniate. Am J Trop Med Hyg 2009; 80:939-940. [PMID: 19478253] [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: 05/27/2023] Open
Abstract
We report a case of drug hypersensitivity syndrome (drug reaction with eosinophilia and systemic symptoms [DRESS]) induced by parenteral meglumine antimoniate (Glucantime) in a 40-year-old man who traveled to Bolivia and was treated for mucocutaneous leishmaniasis. Two weeks after starting therapy, the patient had fever, joint pain, a cutaneous eruption, and hypereosinophilia (1,358 cells/mm(3)). These symptoms resolved after drug withdrawal but reappeared upon reintroduction of the drug. Pentavalent antimonials should be definitively withdrawn in patients with hypereosinophilia > 1,000 cells/mm(3) accompanied by systemic manifestations consistent with DRESS.
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Affiliation(s)
- Fakhri Jeddi
- Service de Parasitologie-Mycologie, et Service de Maladies Infectieuses et Tropicales, Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Pitié-Salpêtrière, Paris, France.
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