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de La Porte des Vaux C, Sainte-Rose V, Le Turnier P, Djossou F, Nacher M, Zappa M, Epelboin L. Chest CT findings in community-acquired pneumonia due to Coxiella burnetii (Q fever) compared to Streptococcus pneumoniae, a cross sectional study in French Guiana, 2013-2017. Travel Med Infect Dis 2024; 57:102679. [PMID: 38135242 DOI: 10.1016/j.tmaid.2023.102679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/29/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
OBJECTIVES Few and small studies previously examined chest CT-scan characteristics of Coxiella burnetii (Cb) community-acquired pneumonia (CAP). Larger studies are needed to guide physicians towards diagnosis of Q fever in case of pneumonia. METHODS We conducted a single-center retrospective observational study between 2013 and 2017. All patients with Cb or Streptococcus pneumoniae (Sp) CAP who had a chest CT-scan on admission at Cayenne Hospital (French Guiana) were included. Chest CT-scan were all analyzed by the same expert radiologist. RESULTS We included 75 patients with Cb CAP and 36 with Sp CAP. Fifty-nine percent of all patients were men (n = 66) and median age was 52 [IQR = 38-62]. Chest CT-scans of Cb CAP patients revealed 67 alveolar condensations (89 %), 52 ground-glass opacities (69 %), 30 cases of lymphadenopathy(ies) (40 %) and 25 pleural effusions (33 %). Parenchyma lesions caused by Cb were predominantly unilateral (67 %). We found high numbers of alveolar condensations in both Cb and Sp CAP (89 % and 75 %; respectively), but the presence of ground-glass opacities was significantly associated with Cb CAP (69 % versus 30 %; p < 0.01). Cb CAP were associated with more lymphadenopathies (40 % vs 17 %; p = 0.01) while Sp CAP showed more bronchial thickening (19 % versus 3 %; p < 0.01) and (micro)nodule(s) ≤1 cm (25 % vs 3 %, p < 0.01). CONCLUSIONS This large study shows that the most typical aspect of chest CT-scan in case of Cb CAP in French Guiana is a unilateral alveolar consolidation associated with ground glass opacities and lymphadenopathies. C. burnetti and S. pneumoniae both most often cause alveolar consolidations, but present some significantly different CT-scan patterns. This could help physicians through therapeutic choices.
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Affiliation(s)
- Clémentine de La Porte des Vaux
- Department of Infectious and Tropical Diseases, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana; Department of Infectious and Tropical Diseases, Hôpital Universitaire Necker-Enfants malades, Paris, France.
| | - Vincent Sainte-Rose
- Department of Microbiology, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Paul Le Turnier
- Department of Infectious and Tropical Diseases, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Félix Djossou
- Department of Infectious and Tropical Diseases, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Mathieu Nacher
- CIC INSERM 1424, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Magaly Zappa
- Department of Radiology, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Loïc Epelboin
- Department of Infectious and Tropical Diseases, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana; CIC INSERM 1424, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
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2
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Osman IO, Caputo A, Pinault L, Mege JL, Levasseur A, Devaux CA. Identification and Characterization of an HtrA Sheddase Produced by Coxiella burnetii. Int J Mol Sci 2023; 24:10904. [PMID: 37446087 PMCID: PMC10342153 DOI: 10.3390/ijms241310904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/19/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
Having previously shown that soluble E-cadherin (sE-cad) is found in sera of Q fever patients and that infection of BeWo cells by C. burnetii leads to modulation of the E-cad/β-cat pathway, our purpose was to identify which sheddase(s) might catalyze the cleavage of E-cad. Here, we searched for a direct mechanism of cleavage initiated by the bacterium itself, assuming the possible synthesis of a sheddase encoded in the genome of C. burnetii or an indirect mechanism based on the activation of a human sheddase. Using a straightforward bioinformatics approach to scan the complete genomes of four laboratory strains of C. burnetii, we demonstrate that C. burnetii encodes a 451 amino acid sheddase (CbHtrA) belonging to the HtrA family that is differently expressed according to the bacterial virulence. An artificial CbHtrA gene (CoxbHtrA) was expressed, and the CoxbHtrA recombinant protein was found to have sheddase activity. We also found evidence that the C. burnetii infection triggers an over-induction of the human HuHtrA gene expression. Finally, we demonstrate that cleavage of E-cad by CoxbHtrA on macrophages-THP-1 cells leads to an M2 polarization of the target cells and the induction of their secretion of IL-10, which "disarms" the target cells and improves C. burnetii replication. Taken together, these results demonstrate that the genome of C. burnetii encodes a functional HtrA sheddase and establishes a link between the HtrA sheddase-induced cleavage of E-cad, the M2 polarization of the target cells and their secretion of IL-10, and the intracellular replication of C. burnetii.
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Affiliation(s)
- Ikram Omar Osman
- Microbes Evolution Phylogeny and Infection (MEPHI) Laboratory, Aix-Marseille University, Institut de Recherche Pour le Développement (IRD), Assistance Publique Hôpitaux de Marseille (APHM), Institut Hospitalo-Universitaire (IHU)–Méditerranée Infection, 13005 Marseille, France; (I.O.O.)
| | - Aurelia Caputo
- Microbes Evolution Phylogeny and Infection (MEPHI) Laboratory, Aix-Marseille University, Institut de Recherche Pour le Développement (IRD), Assistance Publique Hôpitaux de Marseille (APHM), Institut Hospitalo-Universitaire (IHU)–Méditerranée Infection, 13005 Marseille, France; (I.O.O.)
| | - Lucile Pinault
- Microbes Evolution Phylogeny and Infection (MEPHI) Laboratory, Aix-Marseille University, Institut de Recherche Pour le Développement (IRD), Assistance Publique Hôpitaux de Marseille (APHM), Institut Hospitalo-Universitaire (IHU)–Méditerranée Infection, 13005 Marseille, France; (I.O.O.)
| | - Jean-Louis Mege
- Microbes Evolution Phylogeny and Infection (MEPHI) Laboratory, Aix-Marseille University, Institut de Recherche Pour le Développement (IRD), Assistance Publique Hôpitaux de Marseille (APHM), Institut Hospitalo-Universitaire (IHU)–Méditerranée Infection, 13005 Marseille, France; (I.O.O.)
- Laboratory of Immunology, Assitance Publique-Hôpitaux de Marseille (APHM), 13005 Marseille, France
| | - Anthony Levasseur
- Microbes Evolution Phylogeny and Infection (MEPHI) Laboratory, Aix-Marseille University, Institut de Recherche Pour le Développement (IRD), Assistance Publique Hôpitaux de Marseille (APHM), Institut Hospitalo-Universitaire (IHU)–Méditerranée Infection, 13005 Marseille, France; (I.O.O.)
| | - Christian A. Devaux
- Microbes Evolution Phylogeny and Infection (MEPHI) Laboratory, Aix-Marseille University, Institut de Recherche Pour le Développement (IRD), Assistance Publique Hôpitaux de Marseille (APHM), Institut Hospitalo-Universitaire (IHU)–Méditerranée Infection, 13005 Marseille, France; (I.O.O.)
- Centre National de la Recherche Scientifique (CNRS), 13009 Marseille, France
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3
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Omar Osman I, Mezouar S, Brahim-Belhaouari D, Mege JL, Devaux CA. Modulation of the E-cadherin in human cells infected in vitro with Coxiella burnetii. PLoS One 2023; 18:e0285577. [PMID: 37285354 DOI: 10.1371/journal.pone.0285577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 04/25/2023] [Indexed: 06/09/2023] Open
Abstract
High concentration of soluble E-cadherin (E-cad) was previously found in sera from Q fever patients. Here, BeWo cells which express a high concentration of E-cad were used as an in vitro model to investigate the expression and function of E-cad in response to infection by Coxiella burnetii, the etiological agent of Q fever. Infection of BeWo cells with C. burnetii leads to a decrease in the number of BeWo cells expressing E-cad at their membrane. A shedding of soluble E-cad was associated with the post-infection decrease of membrane-bound E-cad. The modulation of E-cad expression requires bacterial viability and was not found with heat-inactivated C. burnetii. Moreover, the intracytoplasmic cell concentration of β-catenin (β-cat), a ligand of E-cad, was reduced after bacterial infection, suggesting that the bacterium induces modulation of the E-cad/β-cat signaling pathway and CDH1 and CTNNB1 genes transcription. Finally, several genes operating the canonical Wnt-Frizzled/β-cat pathway were overexpressed in cells infected with C. burnetii. This was particularly evident with the highly virulent strain of C. burnetii, Guiana. Our data demonstrate that infection of BeWo cells by live C. burnetii modulates the E-cad/β-cat signaling pathway.
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Affiliation(s)
- Ikram Omar Osman
- Aix-Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Soraya Mezouar
- Aix-Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Djamal Brahim-Belhaouari
- Aix-Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Jean-Louis Mege
- Aix-Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Christian Albert Devaux
- Aix-Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
- CNRS, Marseille, France
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4
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Kersh GJ. Tropical Q Fever. Am J Trop Med Hyg 2022; 107:219-220. [PMID: 35977719 PMCID: PMC9393446 DOI: 10.4269/ajtmh.22-0372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 06/01/2022] [Indexed: 11/07/2022] Open
Affiliation(s)
- Gilbert J. Kersh
- Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
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5
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Epelboin L, Mahamat A, Bonifay T, Demar M, Abboud P, Walter G, Drogoul AS, Berlioz-Arthaud A, Nacher M, Raoult D, Djossou F, Eldin C. Q Fever as a Cause of Community-Acquired Pneumonia in French Guiana. Am J Trop Med Hyg 2022; 107:407-415. [PMID: 35977720 PMCID: PMC9393466 DOI: 10.4269/ajtmh.21-0711] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 05/02/2022] [Indexed: 11/30/2022] Open
Abstract
In French Guiana, community-acquired pneumonia (CAP) represents over 90% of Coxiella burnetii acute infections. Between 2004 and 2007, we reported that C. burnetii was responsible for 24.4% of the 131 CAP hospitalized in Cayenne. The main objective of the present study was to determine whether the prevalence of Q fever pneumonia remained at such high levels. The secondary objectives were to identify new clinical characteristics and risk factors for C. burnetii pneumonia. A retrospective case-control study was conducted on patients admitted in Cayenne Hospital, between 2009 and 2012. All patients with CAP were included. The diagnosis of acute Q fever relied on titers of phase II IgG ≥ 200 and/or IgM ≥ 50 or seroconversion between two serum samples. Patients with Q fever were compared with patients with non-C. burnetii CAP in bivariate and multivariate analyses. During the 5-year study, 275 patients with CAP were included. The etiology of CAP was identified in 54% of the patients. C. burnetii represented 38.5% (106/275; 95% CI: 31.2-45.9%). In multivariate analysis, living in Cayenne area, being aged 30-60 years, C-reactive protein (CRP) > 185 mg/L, and leukocyte count < 10 G/L were independently associated with Q fever. The prevalence of Q fever among CAP increased to 38.5%. This is the highest prevalence ever reported in the world. This high prevalence justifies the systematic use of doxycycline in addition to antipneumococcal antibiotic regimens.
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Affiliation(s)
- Loïc Epelboin
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
- Equipe EA 3593, Ecosystèmes Amazoniens et Pathologie Tropicale, Université de la Guyane, Cayenne, Guyane française
| | - Aba Mahamat
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
- Corsica Centre for Healthcare-Associated Infections Control and Prevention, Hôpital Eugénie, Ajaccio, France
| | - Timothée Bonifay
- Département Universitaire de Médecine Générale, Université des Antilles, Pointe-à-Pitre, Guadeloupe
| | - Magalie Demar
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
- Equipe EA 3593, Ecosystèmes Amazoniens et Pathologie Tropicale, Université de la Guyane, Cayenne, Guyane française
- Laboratoire Hospitalo-Universitaire de Parasitologie et Mycologie, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, Guyane française
| | - Philippe Abboud
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
- Equipe EA 3593, Ecosystèmes Amazoniens et Pathologie Tropicale, Université de la Guyane, Cayenne, Guyane française
| | - Gaëlle Walter
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | | | | | - Mathieu Nacher
- Centre d’Investigation Clinique, CIC INSERM 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | | | - Félix Djossou
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
- Equipe EA 3593, Ecosystèmes Amazoniens et Pathologie Tropicale, Université de la Guyane, Cayenne, Guyane française
| | - Carole Eldin
- Aix Marseille University, IRD, AP-HM, SSA, VITROME, IHU-Méditerranée Infection, Marseille, France
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6
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Rutherford C, Kafle P, Soos C, Epp T, Bradford L, Jenkins E. Investigating SARS-CoV-2 Susceptibility in Animal Species: A Scoping Review. ENVIRONMENTAL HEALTH INSIGHTS 2022; 16:11786302221107786. [PMID: 35782319 PMCID: PMC9247998 DOI: 10.1177/11786302221107786] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
In the early stages of response to the SARS-CoV-2 pandemic, it was imperative for researchers to rapidly determine what animal species may be susceptible to the virus, under low knowledge and high uncertainty conditions. In this scoping review, the animal species being evaluated for SARS-CoV-2 susceptibility, the methods used to evaluate susceptibility, and comparing the evaluations between different studies were conducted. Using the PRISMA-ScR methodology, publications and reports from peer-reviewed and gray literature sources were collected from databases, Google Scholar, the World Organization for Animal Health (OIE), snowballing, and recommendations from experts. Inclusion and relevance criteria were applied, and information was subsequently extracted, categorized, summarized, and analyzed. Ninety seven sources (publications and reports) were identified which investigated 649 animal species from eight different classes: Mammalia, Aves, Actinopterygii, Reptilia, Amphibia, Insecta, Chondrichthyes, and Coelacanthimorpha. Sources used four different methods to evaluate susceptibility, in silico, in vitro, in vivo, and epidemiological analysis. Along with the different methods, how each source described "susceptibility" and evaluated the susceptibility of different animal species to SARS-CoV-2 varied, with conflicting susceptibility evaluations evident between different sources. Early in the pandemic, in silico methods were used the most to predict animal species susceptibility to SARS-CoV-2 and helped guide more costly and intensive studies using in vivo or epidemiological analyses. However, the limitations of all methods must be recognized, and evaluations made by in silico and in vitro should be re-evaluated when more information becomes available, such as demonstrated susceptibility through in vivo and epidemiological analysis.
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Affiliation(s)
- Connor Rutherford
- School of Public Health, University of
Saskatchewan, Saskatoon, SK, Canada
| | - Pratap Kafle
- Department of Veterinary Microbiology,
Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK,
Canada
- Department of Veterinary Biomedical
Sciences, Long Island University Post Campus, Brookville, NY, USA
| | - Catherine Soos
- Ecotoxicology and Wildlife Health
Division, Science & Technology Branch, Environment and Climate Change Canada,
Saskatoon, SK, Canada
- Department of Veterinary Pathology,
Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK,
Canada
| | - Tasha Epp
- Department of Large Animal Clinical
Sciences, Western College of Veterinary Medicine, University of Saskatchewan,
Saskatoon, SK, Canada
| | - Lori Bradford
- Ron and Jane Graham School of
Professional Development, College of Engineering, and School of Environment and
Sustainability, University of Saskatchewan, Saskatoon, SK, Canada
| | - Emily Jenkins
- Department of Veterinary Microbiology,
Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK,
Canada
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7
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Epelboin L, Eldin C, Thill P, de Santi VP, Abboud P, Walter G, Melzani A, Letertre-Gibert P, Perez L, Demar M, Boutrou M, Fernandes J, Cermeño JR, Panizo MM, Vreden SG, Djossou F, Beillard E, de Waard JH, de Lemos ERS. Human Q Fever on the Guiana Shield and Brazil: Recent Findings and Remaining Questions. CURRENT TROPICAL MEDICINE REPORTS 2021; 8:173-182. [PMID: 34094813 PMCID: PMC8169413 DOI: 10.1007/s40475-021-00243-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/19/2021] [Indexed: 10/25/2022]
Abstract
Purpose of Review In this review, we report on the state of knowledge about human Q fever in Brazil and on the Guiana Shield, an Amazonian region located in northeastern South America. There is a contrast between French Guiana, where the incidence of this disease is the highest in the world, and other countries where this disease is practically non-existent. Recent Findings Recent findings are essentially in French Guiana where a unique strain MST17 has been identified; it is probably more virulent than those usually found with a particularly marked pulmonary tropism, a mysterious animal reservoir, a geographical distribution that raises questions. Summary Q fever is a bacterial zoonosis due to Coxiella burnetii that has been reported worldwide. On the Guiana Shield, a region mostly covered by Amazonian forest, which encompasses the Venezuelan State of Bolivar, Guyana, Suriname, French Guiana, and the Brazilian State of Amapá, the situation is very heterogeneous. While French Guiana is the region reporting the highest incidence of this disease in the world, with a single infecting clone (MST 117) and a unique epidemiological cycle, it has hardly ever been reported in other countries in the region. This absence of cases raises many questions and is probably due to massive under-diagnosis. Studies should estimate comprehensively the true burden of this disease in the region.
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Affiliation(s)
- Loïc Epelboin
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana.,Centre d'Investigation Clinique (CIC INSERM 1424), Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana.,Équipe EA 3593, Écosystèmes Amazoniens et Pathologie Tropicale (EPAT), Université de la Guyane, Cayenne, French Guiana
| | - Carole Eldin
- Aix-Marseille Université, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée Infection, Marseille, France.,Centre de référence pour la prise en charge des maladies vectorielles à tiques, Marseille, France
| | - Pauline Thill
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana.,Service Universitaire des Maladies Infectieuses et du Voyageur, Centre Hospitalier de Tourcoing, Tourcoing, France
| | - Vincent Pommier de Santi
- Aix-Marseille Université, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée Infection, Marseille, France.,French Military Center for Epidemiology and Public Health, Marseille, France
| | - Philippe Abboud
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Gaëlle Walter
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Alessia Melzani
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Paule Letertre-Gibert
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Lucas Perez
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Magalie Demar
- Laboratoire Hospitalo-Universitaire de Parasitologie-Mycologie, Centre hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Mathilde Boutrou
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Jorlan Fernandes
- Laboratório de Hantaviroses e Rickettsioses, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ Brazil
| | - Julman Rosiris Cermeño
- Departamento de Tuberculosis, Instituto de Biomedicina, Universidad Central de Venezuela, Caracas, Venezuela
| | - Maria Mercedes Panizo
- Mycology Department, National Institute of Hygiene Rafael Rangel, Caracas, Bolivarian Republic of Venezuela
| | - Stephen Gs Vreden
- Internal Medicine and Infectious Diseases, Academic Hospital Paramaribo, Paramaribo, Suriname
| | - Félix Djossou
- Infectious and Tropical Diseases Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana.,Équipe EA 3593, Écosystèmes Amazoniens et Pathologie Tropicale (EPAT), Université de la Guyane, Cayenne, French Guiana
| | - Emmanuel Beillard
- Laboratoire de Biologie Médicale, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Jacobus H de Waard
- Departamento de Parasitología y Microbiología, Escuela de Ciencias de la Salud "Dr. Francisco Battistini Casalta" - Universidad de Oriente, Núcleo Bolívar, Venezuela
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8
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Correlating Genotyping Data of Coxiella burnetii with Genomic Groups. Pathogens 2021; 10:pathogens10050604. [PMID: 34069306 PMCID: PMC8156542 DOI: 10.3390/pathogens10050604] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 11/17/2022] Open
Abstract
Coxiella burnetii is a zoonotic pathogen that resides in wild and domesticated animals across the globe and causes a febrile illness, Q fever, in humans. Several distinct genetic lineages or genomic groups have been shown to exist, with evidence for different virulence potential of these lineages. Multispacer Sequence Typing (MST) and Multiple-Locus Variable number tandem repeat Analysis (MLVA) are being used to genotype strains. However, it is unclear how these typing schemes correlate with each other or with the classification into different genomic groups. Here, we created extensive databases for published MLVA and MST genotypes of C. burnetii and analysed the associated metadata, revealing associations between animal host and human disease type. We established a new classification scheme that assigns both MST and MLVA genotypes to a genomic group and which revealed additional sub-lineages in two genomic groups. Finally, we report a novel, rapid genomotyping method for assigning an isolate into a genomic group based on the Cox51 spacer sequence. We conclude that by pooling and streamlining existing datasets, associations between genotype and clinical outcome or host source were identified, which in combination with our novel genomotyping method, should enable an estimation of the disease potential of new C. burnetii isolates.
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9
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Álvarez-Alonso R, Zendoia II, Barandika JF, Jado I, Hurtado A, López CM, García-Pérez AL. Monitoring Coxiella burnetii Infection in Naturally Infected Dairy Sheep Flocks Throughout Four Lambing Seasons and Investigation of Viable Bacteria. Front Vet Sci 2020; 7:352. [PMID: 32754620 PMCID: PMC7365863 DOI: 10.3389/fvets.2020.00352] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 05/20/2020] [Indexed: 11/13/2022] Open
Abstract
Progression of Coxiella burnetii infection in four naturally infected sheep flocks, and in their farm environment, was monitored throughout four lambing seasons. Flocks with an active infection were selected based on the presence of C. burnetii DNA in bulk-tank milk (BTM) and a high seroprevalence in yearlings during the previous milking period (Spring 2015). During four consecutive lambing seasons (2015/16–2018/19), samples were collected within 1 week after each lambing period from animals (vaginal swabs, milk and feces from ewes, and yearlings) and the environment (dust indoor sheep premises). BTM samples and aerosols (outdoors and indoors) were monthly collected between lambing and the end of milking. Real-time PCR analyses showed different trends in C. burnetii shedding in the flocks, with a general progressive decrease in bacterial shedding throughout the years, interrupted in three flocks by peaks of reinfection associated with specific management practices. A significant relationship was found between C. burnetii fecal shedding and the bacterial burden detected in dust, whereas shedding by vaginal route affected the detection of C. burnetii in indoor aerosols. Three genotypes were identified: SNP8 (three flocks, 52.9% of the samples), SNP1 (two flocks, 44.8% samples), and SNP5 (one flock, two environmental samples). Coxiella burnetii viability in dust measured by culture in Vero cells was demonstrated in two of the flocks, even during the fourth lambing season. The results showed that infection can remain active for over 5 years if effective control and biosafety measures are not correctly implemented.
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Affiliation(s)
- Raquel Álvarez-Alonso
- Animal Health Department, NEIKER-Instituto Vasco de Investigación y Desarrollo Agrario, Derio, Spain
| | - Ion I Zendoia
- Animal Health Department, NEIKER-Instituto Vasco de Investigación y Desarrollo Agrario, Derio, Spain
| | - Jesús F Barandika
- Animal Health Department, NEIKER-Instituto Vasco de Investigación y Desarrollo Agrario, Derio, Spain
| | - Isabel Jado
- Laboratory of Special Pathogens, Instituto de Salud Carlos III, Centro Nacional de Microbiología, Madrid, Spain
| | - Ana Hurtado
- Animal Health Department, NEIKER-Instituto Vasco de Investigación y Desarrollo Agrario, Derio, Spain
| | - Ceferino M López
- Department of Animal Pathology, Veterinary Faculty, University of Santiago de Compostela, Lugo, Spain
| | - Ana L García-Pérez
- Animal Health Department, NEIKER-Instituto Vasco de Investigación y Desarrollo Agrario, Derio, Spain
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10
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Abstract
Coxiella burnetii, the causative agent of Q fever, is widely present in dairy products around the world. It has been isolated from unpasteurised milk and cheese and can survive for extended periods of time under typical storage conditions for these products. Although consumption of contaminated dairy products has been suggested as a potential route for transmission, it remains controversial. Given the high prevalence of C. burnetii in dairy products, we sought to examine the feasibility of transmitting the major sequence types (ST16, ST8 and ST20) of C. burnetii circulating in the United States. We delivered three strains of C. burnetii, comprising each sequence type, directly into the stomachs of immunocompetent BALB/c mice via oral gavage (OG) and assessed them for clinical symptoms, serological response and bacterial dissemination. We found that mice receiving C. burnetii by OG had notable splenomegaly only after infection with ST16. A robust immune response and persistence in the stomach and mesenteric lymph nodes were observed in mice receiving ST16 and ST20 by OG, and dissemination of C. burnetii to peripheral tissues was observed in all OG infected mice. These findings support the oral route as a mode of transmission for C. burnetii.
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Melenotte C, Million M, Raoult D. New insights in Coxiella burnetii infection: diagnosis and therapeutic update. Expert Rev Anti Infect Ther 2019; 18:75-86. [PMID: 31782315 DOI: 10.1080/14787210.2020.1699055] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Introduction: Coxiella burnetii infection is still challenging physicians, mainly because no international coordination has been stated to standardize the therapeutic strategy and improve the clinical outcomes.Areas covered: Based on the recent knowledge on Q fever, we review here the clinical practices from Q fever diagnosis to therapy. We searched PubMed and Google Scholar to perform the qualitative synthesis.Expert opinion: Four major critical points are highlighted in this review. The first point is that Q fever diagnosis has been reviewed in the light of the new diagnosis tools, including molecular biology, transthoracic echocardiography, and 18F-FDG-PET/CT-scan imaging. Q fever diagnosis results from the presence of a microbiological criterion in addition to a lesional criterion. Second, the identification of the anticardiolipin antibodies as a novel biological predictive marker for acute Q fever complications (hemophagocytic syndrome, acute Q fever endocarditis, alithiasic cholecystitis, hepatitis, and meningitis). Third, the observation of a coincidence between Q fever and non-Hodgkin lymphoma that has made persistent C. burnetii infection a risk of non-Hodgkin lymphoma. Finally, we expose here the close follow-up we proposed from the French National Reference Center for patients with Q fever infection to detect relapse and complications.
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Affiliation(s)
- Cléa Melenotte
- Infectious diseases department, Aix-Marseille University, IRD, APHM, MEPHI, Marseille, France.,Infectious diseases department, IHU - Méditerranée Infection, Marseille, France
| | - Matthieu Million
- Infectious diseases department, Aix-Marseille University, IRD, APHM, MEPHI, Marseille, France.,Infectious diseases department, IHU - Méditerranée Infection, Marseille, France
| | - Didier Raoult
- Infectious diseases department, Aix-Marseille University, IRD, APHM, MEPHI, Marseille, France.,Infectious diseases department, IHU - Méditerranée Infection, Marseille, France
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