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Deleplancque AS, Fricker-Hidalgo H, Pomares C, L’Ollivier C, Lemoine JP, Cimon B, Paris L, Houzé S, Villena I, Pelloux H, Villard O. Comparative performance of ISAGA IgM and ELISA assays for the diagnosis of maternal and congenital Toxoplasma infections: which technique could replace ISAGA IgM? Parasite 2024; 31:7. [PMID: 38334687 PMCID: PMC10854481 DOI: 10.1051/parasite/2024004] [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: 11/15/2023] [Accepted: 01/08/2024] [Indexed: 02/10/2024] Open
Abstract
The ISAGA immunocapture test for the detection of anti-Toxoplasma immunoglobulin M is a manual technique known for its excellent sensitivity and specificity. The purpose of this retrospective, multicenter study was to compare the performances and agreement between ISAGA and other IgM detection techniques before cessation of ISAGA production. The analytic performance of the different tests was evaluated using 1,341 serum samples from adults with positive IgM and negative IgG to Toxoplasma gondii, and 1,206 sera from neonates born to mothers with seroconversion. The agreement between the tests was evaluated on 13,506 adult and 5,795 child serum samples. The sensitivity of Toxo-ISAGA IgM® (adults 98.7%, neonates 63.1%) was similar to that of Platelia Toxo IgM® (adults 94.4%, neonates 64.6%), and significantly higher than Liaison Toxo IgM® (adults 90.6%), Architect/Alinity Toxo IgM® (adults 95.7%, neonates 48.6%), and Vidas Toxo IgM® (adults 81.8%, neonates 17.5%). However, the specificities varied between 24.4% (Platelia Toxo IgM®) and 95.2% (Liaison Toxo IgM®) in adults and were >95% for all tests in neonates. An analysis of the kappa coefficients showed better agreement between ISAGA IgM® and the other tests in children (0.75-0.83%) than in adults (0.11-0.53%). We conclude that, in the absence of Toxo-ISAGA IgM®, the association of a very sensitive technique (Platelia Toxo IgM® or Architect/Alinity Toxo IgM®) and a very specific technique (Vidas Toxo IgM® or Liaison Toxo IgM®) is recommended for IgM detection in adult sera. For neonates, Platelia Toxo IgM® appeared to be the best alternative to replace Toxo-ISAGA IgM®.
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Affiliation(s)
- Anne-Sophie Deleplancque
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Centre National de Référence Toxoplasmose – Pôle Sérologie, Hôpitaux Universitaires de Strasbourg Strasbourg France
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CHU Lille, Parasitology Mycology Department, INSERM U1285, CNRS UMR 8576, Glycobiology in Fungal Pathogenesis and Clinical Applications, Université de Lille Lille France
| | - Hélène Fricker-Hidalgo
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Centre National de Référence Toxoplasmose – Pôle Sérologie, Hôpitaux Universitaires de Strasbourg Strasbourg France
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Laboratory of Parasitology and Mycology, Grenoble Alpes University Hospital and Institute for Advanced Biosciences, Grenoble Alpes University, INSERM U1209, CNRS UMR5309 Grenoble France
| | - Christelle Pomares
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Centre National de Référence Toxoplasmose – Pôle Sérologie, Hôpitaux Universitaires de Strasbourg Strasbourg France
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Parasitology-Mycology laboratory, Côte d’Azur University, INSERM 1065, Nice University Hospital Nice France
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Centre Méditerranéen de Médecine Moléculaire (C3 M), U1065, Université Côte d’Azur, INSERM, Archimed Building 151 route Saint Antoine de Ginestière Nice France
| | - Coralie L’Ollivier
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Centre National de Référence Toxoplasmose – Pôle Sérologie, Hôpitaux Universitaires de Strasbourg Strasbourg France
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IHU-Méditerranée Infection, Assistance Publique Hôpitaux de Marseille (AP-HM) Marseille France
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Aix Marseille University, IRD, AP-HM, SSA, VITROME, IHU Méditerranée Marseille France
| | | | - Bernard Cimon
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Centre National de Référence Toxoplasmose – Pôle Sérologie, Hôpitaux Universitaires de Strasbourg Strasbourg France
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Laboratoire de Parasitologie-Mycologie, CHU d’Angers Angers France
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Angers University, Brest University, IRF, SFR 4208 ICAT Angers France
| | - Luc Paris
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Centre National de Référence Toxoplasmose – Pôle Sérologie, Hôpitaux Universitaires de Strasbourg Strasbourg France
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Parasitology laboratory, AP-HP Sorbonne Université, Hôpital Pitié-Salpêtrière Paris France
| | - Sandrine Houzé
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Centre National de Référence Toxoplasmose – Pôle Sérologie, Hôpitaux Universitaires de Strasbourg Strasbourg France
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Parasitology laboratory, AP-HP, Hôpital Bichat - Claude Bernard Paris France
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University of Paris Cité, IRD 261, MERIT Paris France
| | - Isabelle Villena
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Centre National de Référence Toxoplasmose – Pôle Sérologie, Hôpitaux Universitaires de Strasbourg Strasbourg France
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Department of Parasitology and Medical Mycology, National Reference Centre on Toxoplasmosis, Reims Hospital Reims France
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Team EA 7510, SFR CAP-SANTE, Reims Champagne Ardenne University Reims France
| | - Hervé Pelloux
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Centre National de Référence Toxoplasmose – Pôle Sérologie, Hôpitaux Universitaires de Strasbourg Strasbourg France
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Laboratory of Parasitology and Mycology, Grenoble Alpes University Hospital and Institute for Advanced Biosciences, Grenoble Alpes University, INSERM U1209, CNRS UMR5309 Grenoble France
| | - Odile Villard
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Centre National de Référence Toxoplasmose – Pôle Sérologie, Hôpitaux Universitaires de Strasbourg Strasbourg France
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Institut de Parasitologie et de Pathologie Tropicale, UR7292 Dynamique des Interactions Hôte-Pathogène, Fédération de Médecine Transrationnelle, Université de Strasbourg Strasbourg France
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Laboratoire de Parasitologie et Mycologie Médicale, Hôpitaux Universitaires de Strasbourg Strasbourg France
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Denis J, Lemoine JP, L'ollivier C, Deleplancque AS, Fricker Hidalgo H, Pelloux H, Pomares C, Cimon B, Paris L, Houzé S, Villena I, Villard O. Contribution of serology in congenital toxoplasmosis diagnosis: results from a 10-year French retrospective study. J Clin Microbiol 2023; 61:e0035423. [PMID: 37728898 PMCID: PMC10595068 DOI: 10.1128/jcm.00354-23] [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: 03/21/2023] [Accepted: 07/11/2023] [Indexed: 09/22/2023] Open
Abstract
This study aimed to evaluate different serological strategies for the postnatal diagnosis of congenital toxoplasmosis (CT) and establish a biological algorithm for CT diagnosis. The study analyzed serological data of immunoglobulins M, A, and G (IgM, IgA, IgG) performed by immunoenzymatic and compared immunological profile (CIP) assays in 668 newborns with CT diagnosis across four testing periods: P1 (D0- D10), P2 (D11-D35), P3 (D36-D45), and P4 (>D45). Forty-nine percent of the 668 CT cases were diagnosed during P1 and 34%, 4%, and 12% during P2, P3, and P4, respectively. CIP assays detected neosynthetized IgMs/IgGs in 98% of CT cases diagnosed during P1, while IgMs and IgAs were detected in 90% and 57% of CT cases diagnosed during P2 and in 88% and 67% of diagnoses made during P3, respectively. Detection of neosynthesized IgMs/IgGs, IgMs, and IgAs by immunoassay contributed to CT diagnosis in 81%, 77%, and 60% of cases, respectively. In total, 46% of serum samples were positive for all three parameters, 27% for two, and 27% for one of the three. The study recommends using the CIP assay as standard during P1 for CT diagnosis and IgM and IgA immunoassays after P1. A clinical and biological follow-up in a specialized center with a close collaboration between biologists and clinicians is highly recommended to increase the chances of early diagnosis. Overall, this study provides useful information for the development of a biological algorithm for CT diagnosis, which can aid in early detection and appropriate treatment of this disease.
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Affiliation(s)
- Julie Denis
- Institut de Parasitologie et de Pathologie Tropicale, UR7292 Dynamique des interactions hôte pathogène, Fédération de Médecine Transrationnelle, Université de Strasbourg, Strasbourg, France
- Laboratoire de Parasitologie et Mycologie Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | | | - Coralie L'ollivier
- Centre National de Référence Toxoplasmose-Pôle sérologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- IHU-Méditerranée Infection, Assistance Publique Hôpitaux de Marseille (AP-HM), Marseille, France
- Aix Marseille University, IRD, AP-HM, SSA, VITROME, IHU Méditerranée, Marseille, France
| | - Anne-Sophie Deleplancque
- Centre National de Référence Toxoplasmose-Pôle sérologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- CHU Lille, Parasitology Mycology Department, Lille University, Inserm, U995 - LIRIC - Lille Inflammation Research International Center, Lille, France
| | - Hélène Fricker Hidalgo
- Centre National de Référence Toxoplasmose-Pôle sérologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Laboratory of Parasitology and Mycology, INSERM U1209, CNRS UMR5309, Grenoble-Alpes University Hospital, Institute for Advanced Biosciences, Grenoble Alpes University Hospital, Grenoble, France
| | - Hervé Pelloux
- Centre National de Référence Toxoplasmose-Pôle sérologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Laboratory of Parasitology and Mycology, INSERM U1209, CNRS UMR5309, Grenoble-Alpes University Hospital, Institute for Advanced Biosciences, Grenoble Alpes University Hospital, Grenoble, France
| | - Christelle Pomares
- Centre National de Référence Toxoplasmose-Pôle sérologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Parasitology-Mycology laboratory, Côte d'Azur University, INSERM 1065, Nice University Hospital, Nice, France
- Centre Méditerranéen de Médecine Moléculaire (C3M), U1065, Université Côte d'Azur, Inserm, Nice, France
| | - Bernard Cimon
- Laboratoire de Parasitologie-Mycologie, CHU d'Angers, Angers, France
- Centre National de Référence Toxoplasmose-Pôle sérologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Angers University, Brest University, IRF, SFR 4208 ICAT, Angers, France
| | - Luc Paris
- Centre National de Référence Toxoplasmose-Pôle sérologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Parasitology laboratory, AP-HP Pitié-Salpêtrière, Paris, France
| | - Sandrine Houzé
- Centre National de Référence Toxoplasmose-Pôle sérologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Parasitology laboratory, AP-HP, Hôpital Bichat - Claude Bernard, Paris, France
- University of Paris Cité, IRD 261, MERIT, Paris, France
| | - Isabelle Villena
- Centre National de Référence Toxoplasmose-Pôle sérologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Department of Parasitology and Medical Mycology, National Reference Centre on Toxoplasmosis, Reims Hospital, Reims, France
- Team EA 7510, SFR CAP-SANTE, Reims Champagne Ardenne University, Reims, France
| | - Odile Villard
- Institut de Parasitologie et de Pathologie Tropicale, UR7292 Dynamique des interactions hôte pathogène, Fédération de Médecine Transrationnelle, Université de Strasbourg, Strasbourg, France
- Laboratoire de Parasitologie et Mycologie Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Centre National de Référence Toxoplasmose-Pôle sérologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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Peyclit L, Villard O, Paris L, Fricker-Hidalgo H, Houzé S, Cimon B, Deleplancque AS, Tournus C, Pelloux H, Villena I, Pomares C, L'Ollivier C. IgM triplet in neonatal diagnosis by immunoblotting and its potential use as a diagnostic marker for congenital toxoplasmosis. Parasite 2023; 30:19. [PMID: 37265252 DOI: 10.1051/parasite/2023020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 05/09/2023] [Indexed: 06/03/2023] Open
Abstract
Primary infection during pregnancy by the protozoan Toxoplasma gondii can be worrisome because transmission to the fetus may lead to congenital toxoplasmosis (CT). Neonatal diagnosis is usually performed by serological profile comparison of the mother and newborn. As previously reported in 2012 by C. L'Ollivier et al., three IgM bands at 75, 90 and 100 kDa called the "IgM triplet" has caught our attention and seems to be pathognomonic of CT. This retrospective multicenter study involved nine reference laboratories included in the French National Reference Center for Toxoplasmosis network and concerned determining the specificity and sensitivity of this IgM triplet. On this basis, we were able to propose a new read of the comparison of IgG and IgM immunoblot profiles of mother and infant to increase the sensitivity of this diagnostic marker. The effect of the trimester of pregnancy at the time of infection, but also of maternal treatment with pyrimethamine/sulfadiazine/folinic acid on the presence of this IgM triplet in the infant, could be studied. The presence of the triplet appears pathognomonic for the diagnosis of CT, and it increased the sensitivity of the immunoblot assay from 55.04% to 72.48%. As a result, it would be wise to enhance conventional immunoblot reading by adding the presence of the three IgM bands in the infant pattern for neonatal diagnosis of CT.
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Affiliation(s)
| | - Odile Villard
- Laboratoire de Parasitologie et Mycologie Médicale, CNR de la Toxoplasmose, Les Hôpitaux Universitaires de Strasbourg, 67091 Strasbourg, France - Institut de Parasitologie et Pathologie Tropicale, UR7292 Dynamique des interactions hôte pathogène, Fédération de Médecine Translationnelle, Université de Strasbourg, 67091 Strasbourg, France
| | - Luc Paris
- AP-HP, Hôpital Pitié-Salpêtrière, Service de Parasitologie Mycologie, 75013 Paris, France
| | - Hélène Fricker-Hidalgo
- Service de Parasitologie Mycologie, CHU Grenoble Alpes et Université Grenoble Alpes, 38700 Grenoble, France
| | - Sandrine Houzé
- Service de Parasitologie Mycologie, Hôpital Bichat-Claude Bernard, AP-HP, 75018 Paris, et UMR 261 Merit Université Paris Cité, 75018 Paris, France
| | - Bernard Cimon
- Service de Parasitologie Mycologie, CHU Angers, 49100 Angers, France
| | | | - Céline Tournus
- Laboratoire de Microbiologie, Centre Hospitalier de Saint-Denis, 93200 Saint-Denis, France
| | - Hervé Pelloux
- Service de Parasitologie Mycologie, CHU Grenoble Alpes et Université Grenoble Alpes, 38700 Grenoble, France
| | - Isabelle Villena
- Service de Parasitologie Mycologie, EA 7510 Université Reims-Champagne Ardenne, Centre National de Référence de la Toxoplasmose, Centre Hospitalier Universitaire (CHU) Reims, 51092 Reims, France
| | - Christelle Pomares
- Service de Parasitologie Mycologie, Université de la Côte d'Azur, C3M INSERM 1065, CHU Nice, 06204 Nice, France
| | - Coralie L'Ollivier
- IHU Méditerranée Infection, 13005 Marseille, France - Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, 13005 Marseille, France
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Ould Bouamama N, Bouleau J, Cordier C, Deleplancque AS, Labalette P. [Subcutaneous loiasis rocking in the upper eyelids, a case report]. J Fr Ophtalmol 2023; 46:e201-e202. [PMID: 37100714 DOI: 10.1016/j.jfo.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/31/2022] [Accepted: 01/02/2023] [Indexed: 04/28/2023]
Affiliation(s)
- N Ould Bouamama
- Service d'Ophtalmologie du Centre Hospitalier Universaire de Lille, 2, avenue Oscar Lambret, Lille, 59000.
| | - J Bouleau
- Service d'Ophtalmologie du Centre Hospitalier Universaire de Lille, 2, avenue Oscar Lambret, Lille, 59000
| | - C Cordier
- Service de parasitologie et mycologie du Centre Hospitalier Universitaire de Lille, 2, avenue Oscar Lambret, Lille, 59000
| | - A S Deleplancque
- Service de microbiologie du Centre Hospitalier Universitaire de Lille, 2, avenue Oscar Lambret, 59000 Lille, France
| | - P Labalette
- Service d'Ophtalmologie du Centre Hospitalier Universaire de Lille, 2, avenue Oscar Lambret, Lille, 59000
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Hirabidian M, Thierry S, Deleplancque AS, Bergues B, Loridant S, Cornu M, Sendid B, Leroy J. A rare case of presumptive pleural toxocariasis. Eur J Clin Microbiol Infect Dis 2023; 42:781-786. [PMID: 37060382 DOI: 10.1007/s10096-023-04595-9] [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: 01/03/2023] [Accepted: 04/10/2023] [Indexed: 04/16/2023]
Abstract
Toxocariasis is a cosmopolitan helminthiasis linked to contamination with Toxocara cati or Toxocara canis. Only six isolated cases of pleural toxocariasis have been reported in the literature. We describe a case of pleurisy with isolated eosinophilia varying between 600 and 1500/mm3 likely linked o presumptive toxocariasis in a 72-year-old patient. Our patient was admitted to hospital with severe dyspnoea, asthenia and diarrhoea. Imaging studies confirmed right unilateral pleurisy without any parenchymal involvement. Serology of serum and pleural fluid was positive for anti-Toxocara antibodies by ELISA and immunoblotting. Treatment by pleural drainage and anti-parasitic medication with albendazole for 8 days resulted in the resolution of symptoms. A decrease in the levels of polynuclear eosinophils and total IgE confirmed the clinical resolution. The presence of hypereosinophilia in pleural fluid should evoke a diagnosis of pleural toxocariasis. Clinical symptoms and imaging are non-specific, but positive serology for anti-Toxocara antibodies in serum and pleural fluid can confirm the diagnosis.
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Affiliation(s)
- Mickaël Hirabidian
- Laboratoire de Parasitologie-Mycologie, Centre de Biologie Pathologie Génétique, CHU de Lille, 1 Boulevard J. Leclercq, 59037, Lille Cedex, France
| | | | - Anne-Sophie Deleplancque
- Laboratoire de Parasitologie-Mycologie, Centre de Biologie Pathologie Génétique, CHU de Lille, 1 Boulevard J. Leclercq, 59037, Lille Cedex, France
| | - Benoît Bergues
- Laboratoire de Biologie Médicale, CH Arras, Arras, France
| | - Séverine Loridant
- Laboratoire de Parasitologie-Mycologie, Centre de Biologie Pathologie Génétique, CHU de Lille, 1 Boulevard J. Leclercq, 59037, Lille Cedex, France
- Univ. Lille, INSERM U1285, CHU Lille, Laboratoire Parasitologie-Mycologie, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale Et Fonctionnelle, F-59000, Lille, France
| | - Marjorie Cornu
- Laboratoire de Parasitologie-Mycologie, Centre de Biologie Pathologie Génétique, CHU de Lille, 1 Boulevard J. Leclercq, 59037, Lille Cedex, France
- Univ. Lille, INSERM U1285, CHU Lille, Laboratoire Parasitologie-Mycologie, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale Et Fonctionnelle, F-59000, Lille, France
| | - Boualem Sendid
- Laboratoire de Parasitologie-Mycologie, Centre de Biologie Pathologie Génétique, CHU de Lille, 1 Boulevard J. Leclercq, 59037, Lille Cedex, France.
- Univ. Lille, INSERM U1285, CHU Lille, Laboratoire Parasitologie-Mycologie, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale Et Fonctionnelle, F-59000, Lille, France.
| | - Jordan Leroy
- Laboratoire de Parasitologie-Mycologie, Centre de Biologie Pathologie Génétique, CHU de Lille, 1 Boulevard J. Leclercq, 59037, Lille Cedex, France
- Univ. Lille, INSERM U1285, CHU Lille, Laboratoire Parasitologie-Mycologie, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale Et Fonctionnelle, F-59000, Lille, France
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Leroy J, Houzé S, Dardé ML, Yéra H, Rossi B, Delhaes L, Gabriel F, Loubet P, Deleplancque AS, Senneville E, Ajana F, Sendid B, Malvy D. Severe toxoplasmosis imported from tropical Africa in immunocompetent patients: A case series. Travel Med Infect Dis 2019; 35:101509. [PMID: 31712179 DOI: 10.1016/j.tmaid.2019.101509] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 07/22/2019] [Revised: 10/08/2019] [Accepted: 10/31/2019] [Indexed: 11/26/2022]
Abstract
BACKGROUND Toxoplasmosis is a zoonosis caused by the protozoan Toxoplasma gondii. In immunocompetent patients the infection is usually benign. However, cases of severe and even lethal primo-infections are regularly reported in South America. In contrast, data from tropical Africa are fragmentary. METHODS Data for French cases of severe toxoplasmosis acquired between 2013 and 2018, in tropical Africa and among immunocompetent patients were collected retrospectively in 2018. RESULTS Four male patients with a mean age of 34-years were identified. All infections originated in West or Central Africa. The clinical presentations were heterogeneous: two patients had severe disseminated toxoplasmosis, of which one presented with chorioretinitis associated with myositis and the other with febrile pneumopathy; one patient presented with post-infectious acute cerebellar ataxia and the final case had general symptoms and skin manifestations. The diagnosis of acute toxoplasmosis was confirmed by serology in four patients. Molecular diagnosis confirmed T. gondii infection in three patients with Africa 1 as the dominant genotype. The infection was cured with anti-infective treatment in all four patients. Ocular sequelae were reported in the two patients with chorioretinitis. CONCLUSIONS Imported cases of severe toxoplasmosis in immunocompetent patients are rare in France. However, this aetiology should be evoked rapidly in a patient with a severe infectious syndrome who has recently visited or originated from tropical Africa.
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Affiliation(s)
- Jordan Leroy
- CHU Lille, Parasitology Mycology Department, Univ. Lille, Inserm, U995 - LIRIC - Lille Inflammation Research International Center, F-59000, Lille, France
| | - Sandrine Houzé
- Laboratoire de Parasitologie-Mycologie, Assistance Publique-Hôpitaux de Paris, Hôpital Bichat Claude Bernard, Paris, France
| | - Marie-Laure Dardé
- Inserm UMR_S 1094, Neuroépidémiologie Tropicale, Laboratoire de Parasitologie-Mycologie, Faculté de Médecine, Université de Limoges, Limoges, 87025, France; Centre National de Référence Toxoplasmose/Toxoplasma Biological Resource Center, CHU Limoges, 87042, Limoges, France
| | - Hélène Yéra
- Department of Parasitology-Mycology, Faculty of Medicine, Université Paris Descartes, Hôpitaux Universitaire Paris Centre, Assistance Publique Hôpitaux de Paris, CHU Cochin, Paris, France
| | - Benjamin Rossi
- Department of Internal Medicine, Beaujon Hospital, Hôpitaux Universitaires Paris Nord Val de Seine, APHP, Clichy, France
| | - Laurence Delhaes
- Department of Parasitology and Mycology, Bordeaux Hospital University Center, Bordeaux, France
| | - Frédéric Gabriel
- Department of Parasitology and Mycology, Bordeaux Hospital University Center, Bordeaux, France
| | - Paul Loubet
- IAME, UMR 1137, Inserm, Paris Diderot University, Sorbonne Paris Cité, AP-HP, Bichat-Claude Bernard Hospital, Infectious Diseases Department, Paris, France
| | - Anne-Sophie Deleplancque
- CHU Lille, Parasitology Mycology Department, Univ. Lille, Inserm, U995 - LIRIC - Lille Inflammation Research International Center, F-59000, Lille, France
| | - Eric Senneville
- Infectious Diseases Department, Gustave Dron Hospital, Tourcoing, France
| | - Faïza Ajana
- Infectious Diseases Department, Gustave Dron Hospital, Tourcoing, France
| | - Boualem Sendid
- CHU Lille, Parasitology Mycology Department, Univ. Lille, Inserm, U995 - LIRIC - Lille Inflammation Research International Center, F-59000, Lille, France.
| | - Denis Malvy
- Department for Infectious and Tropical Diseases, University Hospital Centre of Bordeaux, Inserm 1219, University of Bordeaux, Bordeaux, France
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Lopez B, Bertier N, Ledoult E, Joudinaud R, Maanaoui M, Majerus V, Moitrot E, Deleplancque AS, Rogeau S, Launay D, Lefèvre G, Labalette M, Dubucquoi S. Classical pathway activity C3c, C4 and C1-inhibitor protein reference intervals determination in EDTA plasma. Biochem Med (Zagreb) 2019; 29:030707. [PMID: 31624460 PMCID: PMC6784422 DOI: 10.11613/bm.2019.030707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 02/05/2019] [Accepted: 06/28/2019] [Indexed: 01/10/2023] Open
Abstract
Introduction Reference intervals (RIs) for complement assays in EDTA plasma samples have not previously been published. The objectives of the present study were to validate and/or determine RIs for classical pathway (CP50) activity and C3c, C4 and C1 inhibitor protein (C1INH) assays and to assess the need for age-specific RIs in EDTA plasma. Materials and methods We retrospectively evaluated a cohort of 387 patients attending our university hospital and known to be free of complement-modifying diseases. The need for age partitioning was assessed and RIs were calculated according to the CLSI protocol. Results No need for age partitioning was evidenced for CP50 activity, C3c and C4 concentrations and RIs (90% CI) were calculated from the pooled data: 35.4 (33.1-37.2) to 76.3 (73.7-83.6) U/mL for CP50 activity, 0.80 (0.75-0.87) to 1.64 (1.59-1.72) g/L for C3c, and 0.12 (0.10-0.14) to 0.38 (0.36-0.40) g/L for C4. Our results highlight a positive association between age and C1INH concentrations. We derived 3 age partitions (6 months to 30 years, 30-50 and > 50 years) and the related RIs: 0.20 (0.18-0.21) to 0.38 (0.36-0.40) g/L, 0.22 (0.20-0.24) to 0.39 (0.36-0.41) g/L and 0.25 (0.22-0.27) to 0.41 (0.40-0.43) g/L, respectively). Conclusions The newly determined RIs for CP50 activity were higher than those provided by the manufacturer for EDTA plasma samples, whereas those for C3c and C4 RIs were similar to the values provided for serum samples. The C1INH concentration and activity were found to be associated with age and age-specific RIs are mandatory for this analyte.
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Affiliation(s)
- Benjamin Lopez
- Department of Immunology, Lille University Hospital, Lille, France.,Lille Inflammation Research International Center, University of Lille, Lille, France
| | - Nicolas Bertier
- Department of Immunology, Lille University Hospital, Lille, France
| | - Emmanuel Ledoult
- Department of Immunology, Lille University Hospital, Lille, France.,Department of Internal Medicine and Clinical Immunology, Lille University Hospital, Lille, France
| | - Romane Joudinaud
- Department of Immunology, Lille University Hospital, Lille, France
| | - Mehdi Maanaoui
- Department of Immunology, Lille University Hospital, Lille, France.,Department of Nephrology, Lille University Hospital, Lille, France
| | - Victoria Majerus
- Department of Immunology, Lille University Hospital, Lille, France
| | | | | | - Stéphanie Rogeau
- Department of Immunology, Lille University Hospital, Lille, France.,Lille Inflammation Research International Center, University of Lille, Lille, France
| | - David Launay
- Lille Inflammation Research International Center, University of Lille, Lille, France.,Department of Internal Medicine and Clinical Immunology, Lille University Hospital, Lille, France.,National Reference Center for Angioedema (CREAK), Grenoble, France
| | - Guillaume Lefèvre
- Department of Immunology, Lille University Hospital, Lille, France.,Lille Inflammation Research International Center, University of Lille, Lille, France.,Department of Internal Medicine and Clinical Immunology, Lille University Hospital, Lille, France
| | - Myriam Labalette
- Department of Immunology, Lille University Hospital, Lille, France.,Lille Inflammation Research International Center, University of Lille, Lille, France
| | - Sylvain Dubucquoi
- Department of Immunology, Lille University Hospital, Lille, France.,Lille Inflammation Research International Center, University of Lille, Lille, France
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Grunewald O, Lopez B, Brabant S, Rogeau S, Deschildre A, Phrommavanh V, Lefort M, Moitrot E, Gyselinckx D, Deleplancque AS, Lefevre G, Labalette M, Dubucquoi S. Immunoglobulin G (IgG) and IgG subclass reference intervals in children, using Optilite® reagents. ACTA ACUST UNITED AC 2018; 56:1319-1327. [DOI: 10.1515/cclm-2018-0001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 02/15/2018] [Indexed: 11/15/2022]
Abstract
Abstract
Background:
Immunoglobulin G (IgG) and IgG subclass assays are indicated in patients with suspected primary immunodeficiency (PID). Commercially available assays for IgG subclass determination are calibrated against various preparations, and so specific reference values are required for each of them. Using Optilite® reagents from The Binding Site Group Ltd., we sought to determine the pediatric IgG and IgG subclass reference intervals with respect to the ERM-DA470k certified reference material.
Methods:
Levels of IgG and IgG subclasses were analyzed in serum samples collected from a large cohort of PID-free children and adolescents. Reference intervals were calculated for previously published age groups (6–12 months, 12–18 months, 18 months–2 years, 2–3 years, 3–4 years, 4–6 years, 6–9 years, 9–12 years and 12–18 years), according to the Clinical and Laboratory Standards Institute’s C28-A3c protocol.
Results:
A total of 456 serum samples were analyzed. The correlation between the total IgG and the sum of the IgG subclasses was good (r2=0.96). No statistically significant gender-specific differences were observed. Our results for the changes over time in IgG and IgG subclass levels are consistent with previous reports. The differences between our lower/upper reference limits and those in the literature are probably due to variations in calibration.
Conclusions:
Our present results provide a reliable basis for the diagnosis of PIDs in childhood and for the accreditation of laboratories using Optilite® immunoturbidimetric reagents for IgG subclass measurement. Laboratory scientists and clinicians should be aware of the need for manufacturer-specific IgG subclass reference intervals.
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9
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Leroy J, Cornu M, Deleplancque AS, Bart A, Loridant S, Fréalle E, Dutoit E, Gaillot O, van Gool T, Puisieux F, Labalette P, Sendid B. Case Report: Ocular Microsporidiosis: Case in a Patient Returning from India and Review of the Literature. Am J Trop Med Hyg 2018; 99:90-93. [PMID: 29692301 DOI: 10.4269/ajtmh.18-0015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Microsporidia are protists close to the kingdom of fungi that may cause eye infections. Most cases are reported in Asia and affect both immunocompromised and immunocompetent patients. Here, we report a rare case of microsporidial keratoconjunctivitis in an immunocompetent French patient 3 weeks after returning from India. In our patient, Weber trichrome staining of conjunctival scrapings revealed rounded elements approximately 1-3 μm in size. Conventional polymerase chain reaction analysis by ribosomal RNA subunit sequencing showed 100% identity with Vittaforma corneae. Treatment by corneal debridement combined with fluoroquinolone eye drops allowed complete resolution of the lesions. Although rare, ocular microsporidiosis should be investigated in a patient who is native to Asia or has returned from an endemic area and presents with keratoconjunctivitis of undetermined etiology.
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Affiliation(s)
- Jordan Leroy
- Institut National de la Santé et de la Recherche Médicale, Unité 995-Lille Inflammation Research International Center, Fungal Associated Invasive & Inflammatory Diseases, Lille, France.,Service de Parasitologie-Mycologie, Lille University Hospital, Lille, France
| | - Marjorie Cornu
- Institut National de la Santé et de la Recherche Médicale, Unité 995-Lille Inflammation Research International Center, Fungal Associated Invasive & Inflammatory Diseases, Lille, France.,Service de Parasitologie-Mycologie, Lille University Hospital, Lille, France
| | | | - Aldert Bart
- Department of Medical Microbiology, Section Parasitology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Séverine Loridant
- Institut National de la Santé et de la Recherche Médicale, Unité 995-Lille Inflammation Research International Center, Fungal Associated Invasive & Inflammatory Diseases, Lille, France.,Service de Parasitologie-Mycologie, Lille University Hospital, Lille, France
| | - Emilie Fréalle
- Service de Parasitologie-Mycologie, Lille University Hospital, Lille, France
| | - Emmanuel Dutoit
- Service de Parasitologie-Mycologie, Lille University Hospital, Lille, France
| | - Olivier Gaillot
- Service de Bactériologie, Lille University Hospital, Lille, France
| | - Tom van Gool
- Department of Medical Microbiology, Section Parasitology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Pierre Labalette
- Service d'Ophtalmologie, Lille University Hospital, Lille, France
| | - Boualem Sendid
- Institut National de la Santé et de la Recherche Médicale, Unité 995-Lille Inflammation Research International Center, Fungal Associated Invasive & Inflammatory Diseases, Lille, France.,Service de Parasitologie-Mycologie, Lille University Hospital, Lille, France
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10
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Lopez B, Bahuaud M, Fieschi C, Mehlal S, Jeljeli M, Rogeau S, Brabant S, Deleplancque AS, Dubucquoi S, Poizot S, Terriou L, Launay D, Batteux F, Labalette M, Lefèvre G. Value of the Overall Pneumococcal Polysaccharide Response in the Diagnosis of Primary Humoral Immunodeficiencies. Front Immunol 2017; 8:1862. [PMID: 29326723 PMCID: PMC5742330 DOI: 10.3389/fimmu.2017.01862] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 12/07/2017] [Indexed: 01/04/2023] Open
Abstract
Background An overall response assay [OVA, based on a 23-valent pneumococcal polysaccharide vaccine (PPV23)] is widely used to screen for anti-pneumococcal antibodies. Given the heterogeneity of response from one polysaccharide (PS) to another, a World Health Organization-standardized serotype-specific enzyme-linked immunosorbent assay (SSA) is considered to be the only reliable method for testing anti-PS antibody responses in individuals with suspected primary immunodeficiencies (PIDs). Objective To evaluate the OVA relative to the reference SSA. Methods Serum samples of adult patients referred for a suspected PID were collected before and then 4–8 weeks after immunization with PPV23. The anti-pneumococcal response was systematically assessed with an SSA (7–16 serotypes) and interpreted according to the American Academy of Asthma, Allergy and Immunology’s current guidelines. We used receiver operating characteristic curves and agreement indices to assess the OVA’s diagnostic value in a first cohort. In order to validate these findings, a second (validation) cohort was then prospectively included. Results Sixty-two adult patients were included, and 42 (67.7%) were defined as poor responders according to the SSA. Only the post-immunization titer in the OVA was able to correctly identify poor responders; a titer below 110 mg/L gave a positive predictive value of 100% [identifying 24 (57.1%) of the 42 poor responders], and similar levels of diagnostic performance were observed in the validation cohort. The pre-vaccination antibody titer, the post/pre-vaccination antibody titer ratio and a post-vaccination titer above 110 mg/L in the OVA were not predictive of the response in the SSA. Conclusion A post-vaccination antibody titer below 110 mg/L in the OVA was constantly associated with a poor PPV23 response using the SSA. In all other cases, SSA is the only reliable method for assessing diagnostic vaccination with PPV23.
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Affiliation(s)
- Benjamin Lopez
- CHU Lille, Institut d'Immunologie, Lille, France.,Univ. Lille, U995 - LIRIC - Lille Inflammation Research International Center, Lille, France
| | - Mathilde Bahuaud
- CHU Hôpital Cochin, Laboratoire d'Immunologie Biologique, Plateforme d'Immuno-monitoring Vaccinal, AP-HP, Paris, France
| | - Claire Fieschi
- Sorbonne Paris Cité, Université Paris Diderot, Hôpital Saint-Louis, Service d'Immunopathologie Clinique, Paris, France
| | - Souad Mehlal
- CHU Hôpital Cochin, Laboratoire d'Immunologie Biologique, Plateforme d'Immuno-monitoring Vaccinal, AP-HP, Paris, France
| | - Mohamed Jeljeli
- CHU Hôpital Cochin, Laboratoire d'Immunologie Biologique, Plateforme d'Immuno-monitoring Vaccinal, AP-HP, Paris, France
| | - Stéphanie Rogeau
- CHU Lille, Institut d'Immunologie, Lille, France.,Univ. Lille, U995 - LIRIC - Lille Inflammation Research International Center, Lille, France
| | | | | | - Sylvain Dubucquoi
- CHU Lille, Institut d'Immunologie, Lille, France.,Univ. Lille, U995 - LIRIC - Lille Inflammation Research International Center, Lille, France
| | | | - Louis Terriou
- Univ. Lille, U995 - LIRIC - Lille Inflammation Research International Center, Lille, France.,CHU Lille, Département de Médecine Interne et Immunologie Clinique, Centre National de Référence Maladies Systémiques et Auto-immunes Rares, Lille, France
| | - David Launay
- CHU Lille, Département de Médecine Interne et Immunologie Clinique, Centre National de Référence Maladies Systémiques et Auto-immunes Rares, Lille, France
| | - Frédéric Batteux
- CHU Hôpital Cochin, Laboratoire d'Immunologie Biologique, Plateforme d'Immuno-monitoring Vaccinal, AP-HP, Paris, France
| | - Myriam Labalette
- CHU Lille, Institut d'Immunologie, Lille, France.,Univ. Lille, U995 - LIRIC - Lille Inflammation Research International Center, Lille, France
| | - Guillaume Lefèvre
- CHU Lille, Institut d'Immunologie, Lille, France.,Univ. Lille, U995 - LIRIC - Lille Inflammation Research International Center, Lille, France.,CHU Lille, Département de Médecine Interne et Immunologie Clinique, Centre National de Référence Maladies Systémiques et Auto-immunes Rares, Lille, France
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11
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Bertin D, Dubucquoi S, Lakomy D, Deleplancque AS, Desplat-Jégo S. Diagnostic performance of a new vimentin-derived ACPA (CCP high sensitive) in patients with rheumatoid arthritis. Immunol Res 2016; 64:455-60. [DOI: 10.1007/s12026-015-8690-9] [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]
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