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Elenga N, Vantilcke V, Martin E, Cuadro E, Selles P, Basset T. Red blood cell exchange in children with sickle cell disease. Int J Hematol 2021; 115:107-113. [PMID: 34550539 DOI: 10.1007/s12185-021-03221-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 09/08/2021] [Accepted: 09/08/2021] [Indexed: 10/20/2022]
Abstract
The aim of our study was to assess the efficacy of red blood cell exchange (RBCx) using a Spectra Optia® automated apheresis system in children with sickle cell disease (SCD). We used automated RBCx to treat acute and chronic complications in 75 children with SCD who had a median age of 10 years [7-13]. We analyzed 649 RBCx sessions. Peripheral venous access was limited in a number of the children, and thus a femoral double-lumen central venous catheter was required. We recommend heparin locking with 500 units in each lumen of the catheter. To prevent complications, we ensured that all patients had achieved a post-RCE HbS level of < 30%. For chronic transfusion, with a post-RCE Hb level of approximately 10-11 g/dL, a blood exchange volume of ≥ 32 mL/kg, and an interval between each RBCx procedure of ≤ 30 days, the residual HbS level was maintained below 30%. For acute transfusion, a post-exchange Hb level ≥ 10 g/dL (p < 0.001) and a total exchange volume ≥ 35 mL/kg (p = 0.001) were the best way to reduce HbS to < 30%. AUC was 0.84. Our results show that erythrocytapheresis was useful and safe for children with SCD.
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Affiliation(s)
- Narcisse Elenga
- Sickle Cell Disease Center, Centre Hospitalier de Cayenne, Rue des Flamboyants, BP 6006, 97306, Cayenne Cedex, French Guiana. .,Centre Hospitalier de Cayenne, Rue des Flamboyants, BP 6006, 97306, Cayenne Cedex, French Guiana.
| | - Vincent Vantilcke
- Sickle Cell Disease Center, Centre Hospitalier de Cayenne, Rue des Flamboyants, BP 6006, 97306, Cayenne Cedex, French Guiana
| | - Elise Martin
- Centre Hospitalier de Cayenne, Rue des Flamboyants, BP 6006, 97306, Cayenne Cedex, French Guiana
| | - Emma Cuadro
- Centre Hospitalier de Cayenne, Rue des Flamboyants, BP 6006, 97306, Cayenne Cedex, French Guiana
| | - Pierre Selles
- Etablissement Français du Sang, Andrée Rosemon, Rue des Flamboyants, BP 6006, 97306, Cayenne Cedex, French Guiana
| | - Thierry Basset
- Centre Hospitalier de Cayenne, Rue des Flamboyants, BP 6006, 97306, Cayenne Cedex, French Guiana
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Conrath S, Vantilcke V, Parisot M, Maire F, Selles P, Elenga N. Increased Prevalence of Alloimmunization in Sickle Cell Disease? Should We Restore Blood Donation in French Guiana? Front Med (Lausanne) 2021; 8:681549. [PMID: 34179050 PMCID: PMC8226117 DOI: 10.3389/fmed.2021.681549] [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] [Received: 03/16/2021] [Accepted: 05/17/2021] [Indexed: 11/29/2022] Open
Abstract
Patients with sickle cell disease often undergo frequent blood transfusions. This increases their exposure to red blood cell alloantigens of donor units, thus making it more likely that they produce alloantibodies. This cross-sectional study aimed to describe the prevalence of allo-immunization in patients with sickle cell disease who were monitored at Cayenne Hospital in 2016. Of the 451 patients recruited during the study period, 238 (52.8%) were female. There were 262 (58.1%) homozygous sickle cell and 151 (33.5%) compound heterozygous sickle cell patients. The median age of the participants was 23.09 years (range, 0.5–68). We noted different red blood cell extended phenotypes: -in the Duffy system, the Fya- Fyb–profile was found in 299 patients (66%);—for the Kidd system, the most represented profile was Jka+ Jkb-, with 213 patients (47%). The Jka antigen was present in 355 patients;—in the MNS system, the S-s+ profile was found in 297 patients (66%);—the Lea antigen of the Lewis system was absent in 319 patients. The most frequent Rh phenotype in our patients was D+ C- E- c+ e+ K-, representing 51% of the patients. A total of 6,834 transfused packed red blood cell units were recorded. Sixty-eight patients (23%; 95% confidence interval, 20–25%) had detectable RBC alloantibodies. In multivariate logistic regression, only the mean number of single transfusions was statistically higher for the alloimmunized patients (p < 0.04). Thirteen (19%) of the patients with alloimmunization developed a delayed hemolytic transfusion reaction, thus representing 4.4% of the total number of transfused patients. Whether differences between donors from France vs. recipients from French Guiana could explain this high prevalence of alloimmunization to be examined. In conclusion, careful transfusion strategies for patients with RBC alloantibodies should allow further reduction of the rate of alloimmunization.
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Affiliation(s)
- Salomé Conrath
- Sickle Cell Disease Center, Andrée Rosemon Regional Hospital, Cayenne, French Guiana
| | - Vincent Vantilcke
- Sickle Cell Disease Center, Andrée Rosemon Regional Hospital, Cayenne, French Guiana
| | - Mickael Parisot
- Sickle Cell Disease Center, Andrée Rosemon Regional Hospital, Cayenne, French Guiana
| | - Françoise Maire
- Etablissement Français du Sang, Andrée Rosemon Regional Hospital, Cayenne, French Guiana
| | - Pierre Selles
- Etablissement Français du Sang, Andrée Rosemon Regional Hospital, Cayenne, French Guiana
| | - Narcisse Elenga
- Sickle Cell Disease Center, Andrée Rosemon Regional Hospital, Cayenne, French Guiana.,Pediatric Medicine and Surgery, Andrée Rosemon Regional Hospital, Cayenne, French Guiana
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de Thoisy B, Duron O, Epelboin L, Musset L, Quénel P, Roche B, Binetruy F, Briolant S, Carvalho L, Chavy A, Couppié P, Demar M, Douine M, Dusfour I, Epelboin Y, Flamand C, Franc A, Ginouvès M, Gourbière S, Houël E, Kocher A, Lavergne A, Le Turnier P, Mathieu L, Murienne J, Nacher M, Pelleau S, Prévot G, Rousset D, Roux E, Schaub R, Talaga S, Thill P, Tirera S, Guégan JF. Ecology, evolution, and epidemiology of zoonotic and vector-borne infectious diseases in French Guiana: Transdisciplinarity does matter to tackle new emerging threats. INFECTION GENETICS AND EVOLUTION 2021; 93:104916. [PMID: 34004361 DOI: 10.1016/j.meegid.2021.104916] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 05/09/2021] [Accepted: 05/12/2021] [Indexed: 02/06/2023]
Abstract
French Guiana is a European ultraperipheric region located on the northern Atlantic coast of South America. It constitutes an important forested region for biological conservation in the Neotropics. Although very sparsely populated, with its inhabitants mainly concentrated on the Atlantic coastal strip and along the two main rivers, it is marked by the presence and development of old and new epidemic disease outbreaks, both research and health priorities. In this review paper, we synthetize 15 years of multidisciplinary and integrative research at the interface between wildlife, ecosystem modification, human activities and sociodemographic development, and human health. This study reveals a complex epidemiological landscape marked by important transitional changes, facilitated by increased interconnections between wildlife, land-use change and human occupation and activity, human and trade transportation, demography with substantial immigration, and identified vector and parasite pharmacological resistance. Among other French Guianese characteristics, we demonstrate herein the existence of more complex multi-host disease life cycles than previously described for several disease systems in Central and South America, which clearly indicates that today the greater promiscuity between wildlife and humans due to demographic and economic pressures may offer novel settings for microbes and their hosts to circulate and spread. French Guiana is a microcosm that crystallizes all the current global environmental, demographic and socioeconomic change conditions, which may favor the development of ancient and future infectious diseases.
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Affiliation(s)
- Benoît de Thoisy
- Laboratoire des Interactions Virus-Hôtes, Institut Pasteur de la Guyane, Cayenne Cedex, French Guiana.
| | - Olivier Duron
- UMR MIVEGEC, IRD, CNRS, Université de Montpellier, Centre IRD de Montpellier, Montpellier, France; Centre de Recherche en Écologie et Évolution de la Santé, Montpellier, France
| | - Loïc Epelboin
- Infectious Diseases Department, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Lise Musset
- Laboratoire de Parasitologie, Centre Collaborateur OMS Pour La Surveillance Des Résistances Aux Antipaludiques, Centre National de Référence du Paludisme, Pôle zones Endémiques, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Philippe Quénel
- Université de Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail), UMR-S 1085 Rennes, France
| | - Benjamin Roche
- UMR MIVEGEC, IRD, CNRS, Université de Montpellier, Centre IRD de Montpellier, Montpellier, France; Centre de Recherche en Écologie et Évolution de la Santé, Montpellier, France
| | - Florian Binetruy
- UMR MIVEGEC, IRD, CNRS, Université de Montpellier, Centre IRD de Montpellier, Montpellier, France
| | - Sébastien Briolant
- Unité Parasitologie et Entomologie, Département Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France; Aix Marseille Université, IRD, SSA, AP-HM, UMR Vecteurs - Infections Tropicales et Méditerranéennes (VITROME), France; IHU Méditerranée Infection, Marseille, France
| | | | - Agathe Chavy
- Laboratoire des Interactions Virus-Hôtes, Institut Pasteur de la Guyane, Cayenne Cedex, French Guiana
| | - Pierre Couppié
- Dermatology Department, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Magalie Demar
- TBIP, Université de Guyane, Cayenne, French Guiana; Université de Lille, CNRS, Inserm, Institut Pasteur de Lille, U1019-UMR 9017-CIIL Centre d'Infection et d'Immunité de Lille, Lille, France
| | - Maylis Douine
- Centre d'Investigation Clinique Antilles-Guyane, Inserm 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Isabelle Dusfour
- Département de Santé Globale, Institut Pasteur, Paris, France; Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana
| | - Yanouk Epelboin
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana
| | - Claude Flamand
- Epidemiology Unit, Institut Pasteur de la Guyane, Cayenne, French Guiana; Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, UMR 2000, CNRS, Paris, France
| | - Alain Franc
- UMR BIOGECO, INRAE, Université de Bordeaux, Cestas, France; Pleiade, EPC INRIA-INRAE-CNRS, Université de Bordeaux Talence, France
| | - Marine Ginouvès
- TBIP, Université de Guyane, Cayenne, French Guiana; Université de Lille, CNRS, Inserm, Institut Pasteur de Lille, U1019-UMR 9017-CIIL Centre d'Infection et d'Immunité de Lille, Lille, France
| | - Sébastien Gourbière
- UMR 5096 Laboratoire Génome et Développement des Plantes, Université de Perpignan Via Domitia, Perpignan, France
| | - Emeline Houël
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRAE, Université des Antilles, Université de Guyane, Cayenne, France
| | - Arthur Kocher
- Transmission, Infection, Diversification & Evolution Group, Max-Planck Institute for the Science of Human History, Kahlaische Str. 10, 07745 Jena, Germany; Laboratoire Evolution et Diversité Biologique (UMR 5174), Université de Toulouse, CNRS, IRD, UPS, Toulouse, France
| | - Anne Lavergne
- Laboratoire des Interactions Virus-Hôtes, Institut Pasteur de la Guyane, Cayenne Cedex, French Guiana
| | - Paul Le Turnier
- Service de Maladies Infectieuses et Tropicales, Hôtel Dieu - INSERM CIC 1413, Centre Hospitalier Universitaire de Nantes, Nantes, France
| | - Luana Mathieu
- Université de Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail), UMR-S 1085 Rennes, France
| | - Jérôme Murienne
- Laboratoire Evolution et Diversité Biologique (UMR 5174), Université de Toulouse, CNRS, IRD, UPS, Toulouse, France
| | - Mathieu Nacher
- Centre d'Investigation Clinique Antilles-Guyane, Inserm 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Stéphane Pelleau
- Université de Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail), UMR-S 1085 Rennes, France; Malaria: Parasites and Hosts, Institut Pasteur, Paris, France
| | - Ghislaine Prévot
- TBIP, Université de Guyane, Cayenne, French Guiana; Université de Lille, CNRS, Inserm, Institut Pasteur de Lille, U1019-UMR 9017-CIIL Centre d'Infection et d'Immunité de Lille, Lille, France
| | - Dominique Rousset
- Laboratoire de Virologie, Institut Pasteur de la Guyane, Cayenne Cedex, French Guiana
| | - Emmanuel Roux
- ESPACE-DEV (Institut de Recherche pour le Développement, Université de la Réunion, Université des Antilles, Université de Guyane, Université de Montpellier, Montpellier, France; International Joint Laboratory "Sentinela" Fundação Oswaldo Cruz, Universidade de Brasília, Institut de Recherche pour le Développement, Rio de Janeiro RJ-21040-900, Brazil
| | - Roxane Schaub
- TBIP, Université de Guyane, Cayenne, French Guiana; Université de Lille, CNRS, Inserm, Institut Pasteur de Lille, U1019-UMR 9017-CIIL Centre d'Infection et d'Immunité de Lille, Lille, France; Centre d'Investigation Clinique Antilles-Guyane, Inserm 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Stanislas Talaga
- UMR MIVEGEC, IRD, CNRS, Université de Montpellier, Centre IRD de Montpellier, Montpellier, France; Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana
| | - Pauline Thill
- Service Universitaire des Maladies Infectieuses et du Voyageur, Centre Hospitalier Dron, Tourcoing, France
| | - Sourakhata Tirera
- Laboratoire des Interactions Virus-Hôtes, Institut Pasteur de la Guyane, Cayenne Cedex, French Guiana
| | - Jean-François Guégan
- UMR MIVEGEC, IRD, CNRS, Université de Montpellier, Centre IRD de Montpellier, Montpellier, France; UMR ASTRE, INRAE, CIRAD, Université de Montpellier, Montpellier, France.
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Roux A, Houcke S, Sanna A, Mathien C, Mayence C, Gueneau R, Liegeon G, Walter G, Resiere D, Elenga N, Resin G, Djossou F, Hommel D, Kallel H. Clinical Features, Diagnosis, and Outcome of Encephalitis in French Guiana. Am J Trop Med Hyg 2019; 100:452-459. [PMID: 30560767 PMCID: PMC6367637 DOI: 10.4269/ajtmh.18-0308] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The aim of our study was to describe the clinical features, the etiologies, and the factors associated with poor outcome of encephalitis in French Guiana. Our study was retrospective, including all cases of encephalitis hospitalized in the Cayenne General Hospital, from January 2007 to July 2017. Patients were included through the 2013 encephalitis consortium criteria and the outcome was evaluated using the Glasgow outcome scale at 3 months from the diagnosis of encephalitis. We included 108 patients, giving an approximate incidence rate of four cases/100,000 inhabitants/year. The origin of the encephalitis was diagnosed in 81 cases (75%), and 72 of them (66.7%) were from an infectious origin. The most common infectious causes were Cryptococcus sp. (18.5%) independently of the immune status, Toxoplasma gondii (13.9%), and Streptococcus pneumoniae (5.5%). In the follow-up, 48 patients (46.6%) had poor outcome. Independent risk factors associated with poor outcome at 3 months were “coming from inside area of the region” (P = 0.036, odds ratio [OR] = 4.19; CI 95% = 1.09–16.06), need for mechanical ventilation (P = 0.002, OR = 5.92; CI 95% = 1.95–17.95), and age ≥ 65 years (P = 0.049, OR = 3.99; CI 95% = 1.01–15.89). The most identified cause of encephalitis in French Guiana was Cryptococcus. The shape of the local epidemiology highlights the original infectious situation with some local specific pathogens.
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Affiliation(s)
- Alexandre Roux
- Intensive Care Unit, Cayenne General Hospital, Cayenne, French Guiana
| | - Stéphanie Houcke
- Intensive Care Unit, Cayenne General Hospital, Cayenne, French Guiana
| | - Alice Sanna
- Regional Authority of Health, Cayenne, French Guiana
| | - Cyrille Mathien
- Intensive Care Unit, Cayenne General Hospital, Cayenne, French Guiana
| | - Claire Mayence
- Intensive Care Unit, Cayenne General Hospital, Cayenne, French Guiana
| | - Romain Gueneau
- Intensive Care Unit, Cayenne General Hospital, Cayenne, French Guiana
| | - Geoffroy Liegeon
- Intensive Care Unit, Cayenne General Hospital, Cayenne, French Guiana
| | - Gaelle Walter
- Infectious and Tropical Diseases Unit, Cayenne General Hospital, Cayenne, French Guiana
| | - Dabor Resiere
- Intensive Care Unit, Fort de France University Hospital, Fort de France, Martinique
| | - Narcisse Elenga
- Pediatric Unit Cayenne General Hospital, Cayenne, French Guiana
| | - Géraldine Resin
- Pediatric Unit Cayenne General Hospital, Cayenne, French Guiana
| | - Felix Djossou
- Infectious and Tropical Diseases Unit, Cayenne General Hospital, Cayenne, French Guiana
| | - Didier Hommel
- Intensive Care Unit, Cayenne General Hospital, Cayenne, French Guiana
| | - Hatem Kallel
- Intensive Care Unit, Cayenne General Hospital, Cayenne, French Guiana
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Maggi RG, Krämer F. A review on the occurrence of companion vector-borne diseases in pet animals in Latin America. Parasit Vectors 2019; 12:145. [PMID: 30917860 PMCID: PMC6438007 DOI: 10.1186/s13071-019-3407-x] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 03/21/2019] [Indexed: 02/07/2023] Open
Abstract
Companion vector-borne diseases (CVBDs) are an important threat for pet life, but may also have an impact on human health, due to their often zoonotic character. The importance and awareness of CVBDs continuously increased during the last years. However, information on their occurrence is often limited in several parts of the world, which are often especially affected. Latin America (LATAM), a region with large biodiversity, is one of these regions, where information on CVBDs for pet owners, veterinarians, medical doctors and health workers is often obsolete, limited or non-existent. In the present review, a comprehensive literature search for CVBDs in companion animals (dogs and cats) was performed for several countries in Central America (Belize, Caribbean Islands, Costa Rica, Cuba, Dominican Republic, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Puerto Rico) as well as in South America (Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, French Guiana, Guyana (British Guyana), Paraguay, Peru, Suriname, Uruguay, Venezuela) regarding the occurrence of the following parasitic and bacterial diseases: babesiosis, heartworm disease, subcutaneous dirofilariosis, hepatozoonosis, leishmaniosis, trypanosomosis, anaplasmosis, bartonellosis, borreliosis, ehrlichiosis, mycoplasmosis and rickettsiosis. An overview on the specific diseases, followed by a short summary on their occurrence per country is given. Additionally, a tabular listing on positive or non-reported occurrence is presented. None of the countries is completely free from CVBDs. The data presented in the review confirm a wide distribution of the CVBDs in focus in LATAM. This wide occurrence and the fact that most of the CVBDs can have a quite severe clinical outcome and their diagnostic as well as therapeutic options in the region are often difficult to access and to afford, demands a strong call for the prevention of pathogen transmission by the use of ectoparasiticidal and anti-feeding products as well as by performing behavioural changes.
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Affiliation(s)
- Ricardo G. Maggi
- Department of Clinical Sciences and the Intracellular Pathogens Research Laboratory, College of Veterinary Medicine, North Carolina State University, Raleigh, NC USA
| | - Friederike Krämer
- Institute of Parasitology, Faculty of Veterinary Medicine, Leipzig University, Leipzig, Germany
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Tahir D, Davoust B, Heu K, Lamour T, Demar M, Marié JL, Blanchet D. Molecular and serological investigation of Trypanosoma cruzi infection in dogs in French Guiana. VETERINARY PARASITOLOGY- REGIONAL STUDIES AND REPORTS 2017; 12:106-109. [PMID: 31014799 DOI: 10.1016/j.vprsr.2017.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 05/16/2017] [Accepted: 06/03/2017] [Indexed: 10/19/2022]
Abstract
Clinical cases of Chagas disease, an infection caused by the parasite Trypanosoma cruzi, have been recently described in humans and dogs in French Guiana, a French overseas department located in South America. Elsewhere in endemic countries for this disease, cases of asymptomatic infections have been described. We performed a prevalence survey of the infection in dogs in Cayenne and Kourou, the main cities of French Guiana. In 2014 and 2016, blood samples were taken from 153 dogs from Cayenne and Kourou. All dogs were apparently healthy at the time of sampling. Sex and age of the dogs were recorded as well as the location where they lived. Serum samples from dogs were screened using a rapid immunochromatographic test (Chagas Stat-Pak®Assay, Chembio, USA) detecting anti-T. cruzi antibodies. Simultaneously, a real-time PCR targeting T. cruzi kDNA was performed on the blood samples of the dog. Six dogs (3.9%) were positive only in serology and one (0.6%) only in qPCR. Two dogs were positive for both tests. The prevalence of infection (positivity for one of the two tests) was 5.8% (9/153). There was no significant difference (χ2 test) between Cayenne (5/100) and Kourou (4/53), between males (3/60) and females (6/93), or between 2014 (2/55) and 2016 (7/98). Canine surveillance is a useful tool for the public health risk assessment of Chagas disease. Positive dogs, even when asymptomatic, should be treated as they can serve as a reservoir for T. cruzi.
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Affiliation(s)
- Djamel Tahir
- Research Unit of Emerging Infectious and Tropical Diseases (URMITE) - IHU Méditerranée Infection. Aix Marseille Univ, CNRS, IRD, INSERM, AP-HM, Marseille, France
| | - Bernard Davoust
- Research Unit of Emerging Infectious and Tropical Diseases (URMITE) - IHU Méditerranée Infection. Aix Marseille Univ, CNRS, IRD, INSERM, AP-HM, Marseille, France; Animal Epidemiology Working Group of the Military Health Service, DRSSA Toulon, France
| | - Katy Heu
- University Medical Parasitology and Mycology Laboratory, Centre Hospitalier A. Rosemon, Cayenne, France
| | - Thierry Lamour
- Animal Epidemiology Working Group of the Military Health Service, DRSSA Toulon, France
| | - Magali Demar
- University Medical Parasitology and Mycology Laboratory, Centre Hospitalier A. Rosemon, Cayenne, France
| | - Jean-Lou Marié
- Research Unit of Emerging Infectious and Tropical Diseases (URMITE) - IHU Méditerranée Infection. Aix Marseille Univ, CNRS, IRD, INSERM, AP-HM, Marseille, France; Animal Epidemiology Working Group of the Military Health Service, DRSSA Toulon, France
| | - Denis Blanchet
- University Medical Parasitology and Mycology Laboratory, Centre Hospitalier A. Rosemon, Cayenne, France.
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Péneau J, Nguyen A, Flores-Ferrer A, Blanchet D, Gourbière S. Amazonian Triatomine Biodiversity and the Transmission of Chagas Disease in French Guiana: In Medio Stat Sanitas. PLoS Negl Trop Dis 2016; 10:e0004427. [PMID: 26867025 PMCID: PMC4750908 DOI: 10.1371/journal.pntd.0004427] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 01/12/2016] [Indexed: 12/22/2022] Open
Abstract
The effects of biodiversity on the transmission of infectious diseases now stand as a cornerstone of many public health policies. The upper Amazonia and Guyana shield are hot-spots of biodiversity that offer genuine opportunities to explore the relationship between the risk of transmission of Chagas disease and the diversity of its triatomine vectors. Over 730 triatomines were light-trapped in four geomorphological landscapes shaping French-Guiana, and we determined their taxonomic status and infection by Trypanosoma cruzi. We used a model selection approach to unravel the spatial and temporal variations in species abundance, diversity and infection. The vector community in French-Guiana is typically made of one key species (Panstrongylus geniculatus) that is more abundant than three secondary species combined (Rhodnius pictipes, Panstrongylus lignarius and Eratyrus mucronatus), and four other species that complete the assemblage. Although the overall abundance of adult triatomines does not vary across French-Guiana, their diversity increases along a coastal-inland gradient. These variations unravelled a non-monotonic relationship between vector biodiversity and the risk of transmission of Chagas disease, so that intermediate biodiversity levels are associated with the lowest risks. We also observed biannual variations in triatomine abundance, representing the first report of a biannual pattern in the risk of Chagas disease transmission. Those variations were highly and negatively correlated with the average monthly rainfall. We discuss the implications of these patterns for the transmission of T. cruzi by assemblages of triatomine species, and for the dual challenge of controlling Amazonian vector communities that are made of both highly diverse and mostly intrusive species.
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Affiliation(s)
- Julie Péneau
- UMR 228 ESPACE-DEV-IMAGES, ‘Institut de Modélisation et d'Analyses en Géo-Environnement et Santé’, Université de Perpignan Via Domitia, Perpignan, France
- Laboratoire de Parasitologie-Mycologie, Centre Hospitalier de Cayenne and Faculté de Médecine, Equipe « Ecosystèmes Amazoniens et Pathologie Tropicale » (EA3593), Université de Antilles et de la Guyane, Cayenne, French Guiana
| | - Anne Nguyen
- UMR 228 ESPACE-DEV-IMAGES, ‘Institut de Modélisation et d'Analyses en Géo-Environnement et Santé’, Université de Perpignan Via Domitia, Perpignan, France
| | - Alheli Flores-Ferrer
- UMR 228 ESPACE-DEV-IMAGES, ‘Institut de Modélisation et d'Analyses en Géo-Environnement et Santé’, Université de Perpignan Via Domitia, Perpignan, France
| | - Denis Blanchet
- Laboratoire de Parasitologie-Mycologie, Centre Hospitalier de Cayenne and Faculté de Médecine, Equipe « Ecosystèmes Amazoniens et Pathologie Tropicale » (EA3593), Université de Antilles et de la Guyane, Cayenne, French Guiana
| | - Sébastien Gourbière
- UMR 228 ESPACE-DEV-IMAGES, ‘Institut de Modélisation et d'Analyses en Géo-Environnement et Santé’, Université de Perpignan Via Domitia, Perpignan, France
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Alloimmunization in patients with sickle cell disease in French Guiana. JOURNAL OF BLOOD TRANSFUSION 2015; 2015:812934. [PMID: 25722918 PMCID: PMC4333280 DOI: 10.1155/2015/812934] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 12/22/2014] [Accepted: 01/13/2015] [Indexed: 12/03/2022]
Abstract
This study in French Guiana assessed the frequency of alloimmunization to red cell antigens in sickle cell disease patients over 1995–2011 and identified the most common antibodies. A retrospective analysis of the transfusion history and medical records of 302 patients showed that 29/178 transfused patients had developed alloantibodies (16%). The most frequent alloantibodies were anti-LE1, anti-MNS1, anti-LE2, and anti-FY1 and were developed after transfusion of standard red cell units. The frequency of the clinically significant antibodies in this population of SCD patients was 11% (19/178). The antibodies found on those patients who had delayed hemolytic transfusion reaction were anti-K1, anti-FY1, and anti-MNS3. The strategies used to decrease alloimmunization in French Guiana are discussed.
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Hiwat H. Triatominae species of Suriname (Heteroptera: Reduviidae) and their role as vectors of Chagas disease. Mem Inst Oswaldo Cruz 2014; 109:452-8. [PMID: 25004146 PMCID: PMC4155847 DOI: 10.1590/0074-0276130408] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 05/02/2014] [Indexed: 11/21/2022] Open
Abstract
Nine species of Triatominae, representing three tribes and five genera, are currently known in Suriname. An annotated list of the species based on the collections of the Bureau of Public Health (Suriname), the National Zoological Collection Suriname and the National History Museum Leiden (the Netherlands) is provided. Additionally, the results of several years of opportunistic collection in two domestic environments are presented. The most common species are Rhodnius pictipes Stål, 1972, Rhodnius robustus Larrouse, 1972 and Panstrongylus geniculatus (Latreille, 1811). The significance of the species as vectors of Chagas disease in Suriname is discussed.
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Affiliation(s)
- Hélène Hiwat
- Department of Entomology, Bureau of Public Health, Paramaribo, Suriname
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Berneman A, Montout L, Goyard S, Chamond N, Cosson A, d’Archivio S, Gouault N, Uriac P, Blondel A, Minoprio P. Combined approaches for drug design points the way to novel proline racemase inhibitor candidates to fight Chagas' disease. PLoS One 2013; 8:e60955. [PMID: 23613764 PMCID: PMC3628851 DOI: 10.1371/journal.pone.0060955] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Accepted: 03/04/2013] [Indexed: 11/18/2022] Open
Abstract
Chagas' disease is caused by Trypanosoma cruzi, a protozoan transmitted to humans by blood-feeding insects, blood transfusion or congenitally. Previous research led us to discover a parasite proline racemase (TcPRAC) and to establish its validity as a target for the design of new chemotherapies against the disease, including its chronic form. A known inhibitor of proline racemases, 2-pyrrolecarboxylic acid (PYC), is water-insoluble. We synthesized soluble pyrazole derivatives, but they proved weak or inactive TcPRAC inhibitors. TcPRAC catalytic site is too small and constrained when bound to PYC to allow efficient search for new inhibitors by virtual screening. Forty-nine intermediate conformations between the opened enzyme structure and the closed liganded one were built by calculating a transition path with a method we developed. A wider range of chemical compounds could dock in the partially opened intermediate active site models in silico. Four models were selected for known substrates and weak inhibitors could dock in them and were used to screen chemical libraries. Two identified soluble compounds, (E)-4-oxopent-2-enoic acid (OxoPA) and its derivative (E)-5-bromo-4-oxopent-2-enoic acid (Br-OxoPA), are irreversible competitive inhibitors that presented stronger activity than PYC on TcPRAC. We show here that increasing doses of OxoPA and Br-OxoPA hamper T. cruzi intracellular differentiation and fate in mammalian host cells. Our data confirm that through to their binding mode, these molecules are interesting and promising as lead compounds for the development of chemotherapies against diseases where active proline racemases play essential roles.
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Affiliation(s)
- Armand Berneman
- Laboratoire des Processus Infectieux à Trypanosomatidés, Département Infection et Epidémiologie, Institut Pasteur, Paris, France
| | - Lory Montout
- Unité de Bioinformatique Structurale, CNRS-UMR 3528, Département de Biologie Structurale et Chimie, Institut Pasteur, Paris, France
| | - Sophie Goyard
- Laboratoire des Processus Infectieux à Trypanosomatidés, Département Infection et Epidémiologie, Institut Pasteur, Paris, France
| | - Nathalie Chamond
- Laboratoire des Processus Infectieux à Trypanosomatidés, Département Infection et Epidémiologie, Institut Pasteur, Paris, France
| | - Alain Cosson
- Laboratoire des Processus Infectieux à Trypanosomatidés, Département Infection et Epidémiologie, Institut Pasteur, Paris, France
| | - Simon d’Archivio
- Laboratoire des Processus Infectieux à Trypanosomatidés, Département Infection et Epidémiologie, Institut Pasteur, Paris, France
| | - Nicolas Gouault
- Equipe Produits Naturels, Synthèses et Chimie Médicinale, UMR 6226 Sciences Chimiques de Rennes, Université de Rennes 1, Rennes, France
| | - Philippe Uriac
- Equipe Produits Naturels, Synthèses et Chimie Médicinale, UMR 6226 Sciences Chimiques de Rennes, Université de Rennes 1, Rennes, France
| | - Arnaud Blondel
- Unité de Bioinformatique Structurale, CNRS-UMR 3528, Département de Biologie Structurale et Chimie, Institut Pasteur, Paris, France
| | - Paola Minoprio
- Laboratoire des Processus Infectieux à Trypanosomatidés, Département Infection et Epidémiologie, Institut Pasteur, Paris, France
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[Chagas disease (American trypanosomiasis) in France]. Med Mal Infect 2012; 42:344-8. [PMID: 22591727 DOI: 10.1016/j.medmal.2011.01.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Revised: 12/31/2010] [Accepted: 01/16/2011] [Indexed: 11/24/2022]
Abstract
Chagas disease is an anthropozoonotic infection caused by Trypanosoma cruzi, transmitted by a hematophagous triatomine insect vector belonging to the Reduviidae family, while taking a blood meal. There is a large reservoir of wild and domestic mammals. Human contamination may come via vectorial, transplacental, and digestive routes, blood transfusion, organ or tissue transplantation, and by accident. The disease has two phases. The acute phase, oligosymptomatic, is frequently undiagnosed. It is followed by a chronic phase. Most of the infected patients remain asymptomatic all life-long. But 10 or 25 years later, one third of infected patients present with cardiac or digestive complications. Chagas disease is endemic in Latin America, from Mexico to Argentina. In French Guyana, the prevalence of the infection was estimated at 0.25% and 0.5% (from 500 to 1000 infected patients) on blood samples collected from 1992 to 1998. In 2000 and 2009, 192 cases were diagnosed. In this district, there is no established domestic vector and the transmission risk is low. The vector is very easily found in forest habitats and even in the peridomestic persistent forest, with an infection rate of 46 to 86%. Vectorial eradication is impossible. Fighting against Chagas disease in French Guyana relies more on individual protection, control of blood transfusion, prevention of mother-to-child transmission, diagnosis, and treatment of infected patients than on vectorial control.
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El Ghouzzi MH, Boiret E, Wind F, Brochard C, Fittere S, Paris L, Mazier D, Sansonetti N, Bierling P. BLOOD DONORS AND BLOOD COLLECTION: Testing blood donors for Chagas disease in the Paris area, France: first results after 18 months of screening. Transfusion 2009; 50:575-83. [DOI: 10.1111/j.1537-2995.2009.02476.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Develoux M, Lescure FX, Le Loup G, Pialoux G. Maladie de Chagas. Rev Med Interne 2009; 30:686-95. [DOI: 10.1016/j.revmed.2008.11.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2008] [Revised: 11/14/2008] [Accepted: 11/23/2008] [Indexed: 11/28/2022]
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Garraud O, Pelletier B, Aznar C. Pourquoi ajourner au don de sang des candidats au motif d’un risque de maladie de Chagas ? Transfus Clin Biol 2008; 15:123-8. [DOI: 10.1016/j.tracli.2008.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2007] [Accepted: 05/05/2008] [Indexed: 10/21/2022]
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