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Gargallo-Garriga A, Sardans J, Llusià J, Peguero G, Ayala-Roque M, Courtois EA, Stahl C, Urban O, Klem K, Nolis P, Pérez-Trujillo M, Parella T, Richter A, Janssens IA, Peñuelas J. Different profiles of soil phosphorous compounds depending on tree species and availability of soil phosphorus in a tropical rainforest in French Guiana. BMC Plant Biol 2024; 24:278. [PMID: 38609866 PMCID: PMC11010349 DOI: 10.1186/s12870-024-04907-x] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/13/2024] [Indexed: 04/14/2024]
Abstract
BACKGROUND The availability of soil phosphorus (P) often limits the productivities of wet tropical lowland forests. Little is known, however, about the metabolomic profile of different chemical P compounds with potentially different uses and about the cycling of P and their variability across space under different tree species in highly diverse tropical rainforests. RESULTS We hypothesised that the different strategies of the competing tree species to retranslocate, mineralise, mobilise, and take up P from the soil would promote distinct soil 31P profiles. We tested this hypothesis by performing a metabolomic analysis of the soils in two rainforests in French Guiana using 31P nuclear magnetic resonance (NMR). We analysed 31P NMR chemical shifts in soil solutions of model P compounds, including inorganic phosphates, orthophosphate mono- and diesters, phosphonates, and organic polyphosphates. The identity of the tree species (growing above the soil samples) explained > 53% of the total variance of the 31P NMR metabolomic profiles of the soils, suggesting species-specific ecological niches and/or species-specific interactions with the soil microbiome and soil trophic web structure and functionality determining the use and production of P compounds. Differences at regional and topographic levels also explained some part of the the total variance of the 31P NMR profiles, although less than the influence of the tree species. Multivariate analyses of soil 31P NMR metabolomics data indicated higher soil concentrations of P biomolecules involved in the active use of P (nucleic acids and molecules involved with energy and anabolism) in soils with lower concentrations of total soil P and higher concentrations of P-storing biomolecules in soils with higher concentrations of total P. CONCLUSIONS The results strongly suggest "niches" of soil P profiles associated with physical gradients, mostly topographic position, and with the specific distribution of species along this gradient, which is associated with species-specific strategies of soil P mineralisation, mobilisation, use, and uptake.
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Affiliation(s)
- Albert Gargallo-Garriga
- Global Change Research Institute, The Czech Academy of Sciences, Belidla 986/4a, Brno, CZ-60300, Czech Republic.
- Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain.
| | - Jordi Sardans
- Global Ecology Unit, CSIC, CREAF-CSIC-UAB, Bellaterra, 08193, Catalonia, Spain
- CREAF, Cerdanyola del vallès, Barcelona, Catalonia, 08193, Spain
| | - Joan Llusià
- Global Ecology Unit, CSIC, CREAF-CSIC-UAB, Bellaterra, 08193, Catalonia, Spain
- CREAF, Cerdanyola del vallès, Barcelona, Catalonia, 08193, Spain
| | - Guille Peguero
- Global Ecology Unit, CSIC, CREAF-CSIC-UAB, Bellaterra, 08193, Catalonia, Spain
- CREAF, Cerdanyola del vallès, Barcelona, Catalonia, 08193, Spain
| | | | - Elodie A Courtois
- Centre of Excellence PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Wilrijk, Belgium
- Laboratoire écologie, évolution, Interactions des Systèmes Amazoniens (LEEISA), Université de Guyane, CNRS, IFREMER, Cayenne, France
| | - Clément Stahl
- UMR ECOFOG - Ecologie des forêts de Guyane, Kourou cedex, 97379, France
| | - Otmar Urban
- Global Ecology Unit, CSIC, CREAF-CSIC-UAB, Bellaterra, 08193, Catalonia, Spain
| | - Karel Klem
- Global Ecology Unit, CSIC, CREAF-CSIC-UAB, Bellaterra, 08193, Catalonia, Spain
| | - Pau Nolis
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
| | - Miriam Pérez-Trujillo
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
| | - Teodor Parella
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
| | - Andreas Richter
- Centre for Microbiology and Environmental Systems Science, University of Vienna, Althanstr. 14, Vienna, 1090, Austria
| | - Ivan A Janssens
- Centre of Excellence PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Wilrijk, Belgium
| | - Josep Peñuelas
- Global Ecology Unit, CSIC, CREAF-CSIC-UAB, Bellaterra, 08193, Catalonia, Spain
- CREAF, Cerdanyola del vallès, Barcelona, Catalonia, 08193, Spain
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Antoine PO, Wieringa LN, Adnet S, Aguilera O, Bodin SC, Cairns S, Conejeros-Vargas CA, Cornée JJ, Ežerinskis Ž, Fietzke J, Gribenski NO, Grouard S, Hendy A, Hoorn C, Joannes-Boyau R, Langer MR, Luque J, Marivaux L, Moissette P, Nooren K, Quillévéré F, Šapolaitė J, Sciumbata M, Valla PG, Witteveen NH, Casanova A, Clavier S, Bidgrain P, Gallay M, Rhoné M, Heuret A. A Late Pleistocene coastal ecosystem in French Guiana was hyperdiverse relative to today. Proc Natl Acad Sci U S A 2024; 121:e2311597121. [PMID: 38527199 PMCID: PMC10998618 DOI: 10.1073/pnas.2311597121] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 02/15/2024] [Indexed: 03/27/2024] Open
Abstract
Warmer temperatures and higher sea level than today characterized the Last Interglacial interval [Pleistocene, 128 to 116 thousand years ago (ka)]. This period is a remarkable deep-time analog for temperature and sea-level conditions as projected for 2100 AD, yet there has been no evidence of fossil assemblages in the equatorial Atlantic. Here, we report foraminifer, metazoan (mollusks, bony fish, bryozoans, decapods, and sharks among others), and plant communities of coastal tropical marine and mangrove affinities, dating precisely from a ca. 130 to 115 ka time interval near the Equator, at Kourou, in French Guiana. These communities include ca. 230 recent species, some being endangered today and/or first recorded as fossils. The hyperdiverse Kourou mollusk assemblage suggests stronger affinities between Guianese and Caribbean coastal waters by the Last Interglacial than today, questioning the structuring role of the Amazon Plume on tropical Western Atlantic communities at the time. Grassland-dominated pollen, phytoliths, and charcoals from younger deposits in the same sections attest to a marine retreat and dryer conditions during the onset of the last glacial (ca. 110 to 50 ka), with a savanna-dominated landscape and episodes of fire. Charcoals from the last millennia suggest human presence in a mosaic of modern-like continental habitats. Our results provide key information about the ecology and biogeography of pristine Pleistocene tropical coastal ecosystems, especially relevant regarding the-widely anthropogenic-ongoing global warming.
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Affiliation(s)
- Pierre-Olivier Antoine
- Equipe de Paléontologie, Institut des Sciences de l’Évolution de Montpellier, Univ Montpellier, CNRS, Institut de Recherche pour le Développement, Montpellier34095, France
| | - Linde N. Wieringa
- Equipe de Paléontologie, Institut des Sciences de l’Évolution de Montpellier, Univ Montpellier, CNRS, Institut de Recherche pour le Développement, Montpellier34095, France
| | - Sylvain Adnet
- Equipe de Paléontologie, Institut des Sciences de l’Évolution de Montpellier, Univ Montpellier, CNRS, Institut de Recherche pour le Développement, Montpellier34095, France
| | - Orangel Aguilera
- Paleoecology and Global Changes Laboratory, Marine Biology Department, Fluminense Federal University, Niterói 24210-201, Rio de Janeiro, Brazil
| | - Stéphanie C. Bodin
- Department of Paleoanthropology, Senckenberg Research Institute, Frankfurt am Main60325, Germany
| | - Stephen Cairns
- Department of Invertebrate Zoology, Smithsonian Institution, National Museum of Natural History, Washington D.C.20013-7012
| | - Carlos A. Conejeros-Vargas
- Departamento de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México04510, México
| | - Jean-Jacques Cornée
- Equipe Dynamique de la Lithosphère, Géosciences Montpellier, Univ Montpellier, CNRS, Montpellier34095, France
| | - Žilvinas Ežerinskis
- Mass Spectrometry Laboratory, Center for Physical Sciences and Technology, Vilnius10257, Lithuania
| | - Jan Fietzke
- Geomar, Helmholtz Centre for Ocean Research Kiel, Kiel24148, Germany
| | - Natacha O. Gribenski
- Institute of Geological Sciences, Oeschger Centre for Climate Change Research, University of Bern, Bern3012, Switzerland
| | - Sandrine Grouard
- Archéozoologie et Archéobotanique—Sociétés, Pratiques et Environnements, CNRS, Muséum National d’Histoire Naturelle, Paris75005, France
| | - Austin Hendy
- Invertebrate Paleontology Department, Natural History Museum of Los Angeles County, Los Angeles, CA90007
| | - Carina Hoorn
- Ecosystem & Landscape Dynamics Department, Institute for Biodiversity and Ecosystem Dynamics, Universiteit van Amsterdam, Amsterdam1098 XH, The Netherlands
| | - Renaud Joannes-Boyau
- Geoarchaeology and Archaeometry Research Group, Southern Cross GeoScience, Southern Cross University, East Lismore, NSW2480, Australia
- Centre for Anthropological Research, University of Johannesburg, Johannesburg2092, South Africa
| | - Martin R. Langer
- Arbeitsgruppe Mikropaläontologie, Institut für Geowissenschaften, Paläontologie, Universität Bonn, Bonn53115, Germany
| | - Javier Luque
- Department of Zoology, Museum of Zoology, University of Cambridge, CambridgeCB2 3EJ, United Kingdom
| | - Laurent Marivaux
- Equipe de Paléontologie, Institut des Sciences de l’Évolution de Montpellier, Univ Montpellier, CNRS, Institut de Recherche pour le Développement, Montpellier34095, France
| | - Pierre Moissette
- Department of Historical Geology-Paleontology, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, Athens15784, Greece
| | - Kees Nooren
- Ecosystem & Landscape Dynamics Department, Institute for Biodiversity and Ecosystem Dynamics, Universiteit van Amsterdam, Amsterdam1098 XH, The Netherlands
| | - Frédéric Quillévéré
- Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, CNRS, VilleurbanneF-69622, France
| | - Justina Šapolaitė
- Mass Spectrometry Laboratory, Center for Physical Sciences and Technology, Vilnius10257, Lithuania
| | - Matteo Sciumbata
- Ecosystem & Landscape Dynamics Department, Institute for Biodiversity and Ecosystem Dynamics, Universiteit van Amsterdam, Amsterdam1098 XH, The Netherlands
- Section Systems Ecology, Amsterdam Institute for Life and Environment, Vrije Universiteit, Amsterdam1081 BT, The Netherlands
| | - Pierre G. Valla
- Equipe Tectonique, Reliefs et Bassins, Institut des Sciences de la Terre, Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, Université Gustave Eiffel, Grenoble38058, France
| | - Nina H. Witteveen
- Ecosystem & Landscape Dynamics Department, Institute for Biodiversity and Ecosystem Dynamics, Universiteit van Amsterdam, Amsterdam1098 XH, The Netherlands
| | - Alexandre Casanova
- Département Formation et Recherche Sciences et Technologie, Université de Guyane, Cayenne97300, Guyane
| | | | - Philibert Bidgrain
- Département Formation et Recherche Sciences et Technologie, Université de Guyane, Cayenne97300, Guyane
| | | | | | - Arnauld Heuret
- Equipe Dynamique de la Lithosphère, Géosciences Montpellier, Univ Montpellier, CNRS, Montpellier34095, France
- Département Formation et Recherche Sciences et Technologie, Université de Guyane, Cayenne97300, Guyane
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Wang Q, Nacher M, Tosi A, Clarke L, Rwagitinywa J, Alsibai KD, Castor MJ. Coverage of BCG Vaccination for children aged until 7 years old and its determinants in French Guiana. J Epidemiol Popul Health 2024; 72:202381. [PMID: 38579396 DOI: 10.1016/j.jeph.2024.202381] [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] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 01/29/2024] [Accepted: 02/05/2024] [Indexed: 04/07/2024]
Abstract
INTRODUCTION The overall incidence of tuberculosis (TB) in France is low; thus, BCG vaccination is no longer mandatory. In French Guiana - a French overseas territory - BCG vaccination is strongly recommended because the incidence of TB is high in the context of mass immigration from endemic countries with low BCG vaccination rates. Thus, it is important to assess Bacillus Calmette-Guérin (BCG) vaccination coverage and its predictors. METHODS We used data from the 2014 French Guiana Yellow Fever survey, which was conducted by the Observatoire Régional de la Santé de Guyane. Demographic and immunization data from eligible children and their families were collected using a questionnaire. Children who had an immunization card and who were no older than 7 years of age at the time of the survey were eligible. The Coverage for BCG and other mandatory vaccines were estimated; the delay in BCG vaccination was also computed. Univariate and multivariate analyses identified predictors associated with BCG immunization and BCG delayed immunization (after 2 months of age). RESULTS AND CONCLUSION Overall, 469 children were eligible for this study. The total BCG coverage was 79.5 %, and the proportion of children vaccinated with delay was 50.7 %. The multivariate analysis indicated that BCVA was significantly greater among children younger than 3 years of age, whose household head was employed and whose education level was greater. None of the predictors were associated with the delay of BCG vaccination.
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Affiliation(s)
- Qiannan Wang
- Registre des Cancers de Guyane, Cayenne 97300, French Guiana; Amazonian Infrastructures for Population Health, Cayenne 97300, French Guiana; Département Recherche Innovation Santé Publique, Centre Hospitalier de Cayenne, Cayenne 97300, French Guiana.
| | - Mathieu Nacher
- Registre des Cancers de Guyane, Cayenne 97300, French Guiana; Amazonian Infrastructures for Population Health, Cayenne 97300, French Guiana; CIC INSERM 1424, Centre Hospitalier de Cayenne, Cayenne 97300, French Guiana; Département Formation Recherche Santé, Université de Guyane, Cayenne 97300, French Guiana
| | - Alice Tosi
- Amazonian Infrastructures for Population Health, Cayenne 97300, French Guiana; Département Recherche Innovation Santé Publique, Centre Hospitalier de Cayenne, Cayenne 97300, French Guiana; Registre des handicaps de l'enfant et observatoire périnatal de Guyane, Cayenne 97300, French Guiana
| | - Loreinzia Clarke
- Observatoire Régional de la Santé de Guyane, Cayenne 97300, French Guiana
| | - Joseph Rwagitinywa
- Observatoire Régional de la Santé de Guyane, Cayenne 97300, French Guiana
| | - Kinan Drak Alsibai
- Registre des Cancers de Guyane, Cayenne 97300, French Guiana; Département Recherche Innovation Santé Publique, Centre Hospitalier de Cayenne, Cayenne 97300, French Guiana; Centre de Ressources Biologiques Amazonie, Centre Hospitalier de Cayenne, Cayenne 97300, French Guiana; Service d'Anatomopathologie, Centre Hospitalier de Cayenne, Cayenne 97300, French Guiana
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4
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Blaizot R, Armanville F, Michaud C, Boceno C, Dupart O, Pansart C, Niemetzky F, Couppie P, Nacher M, Adenis A, Chosidow O, Duvignaud A. Scabies in French Guiana: Quantitative and qualitative factors associated with therapeutic failure. J Eur Acad Dermatol Venereol 2024; 38:602-612. [PMID: 38041562 DOI: 10.1111/jdv.19688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 11/08/2023] [Indexed: 12/03/2023]
Abstract
BACKGROUND Strategies for the control of scabies should be adapted to local settings. Traditional communities in French Guiana have non-Western conceptions of disease and health. OBJECTIVES The objectives for this study were to explore knowledge, attitudes and practices to identify potential factors associated with the failure of scabies treatment in these communities. METHODS Patients with a clinical diagnosis of scabies, seen at either the Cayenne Hospital or one of 13 health centres between 01 April 2021 and 31 August 2021, were included as participants, and were seen again after 6 weeks to check for persistence of lesions. Factors associated with treatment failure were looked for both at inclusion and at 6 weeks. Semi-structured interviews were conducted with a diversified subsample of participants. RESULTS In total, 164 participants were included in the quantitative component, and 21 were interviewed for the qualitative component. Declaring that the second treatment dose had been taken was associated with therapeutic success. Western treatments were not always affordable. Better adherence was observed with topical treatments than with oral ivermectin, whereas permethrin monotherapy was associated with failure. Scabies-associated stigma was high among Amerindians and Haitians but absent in Ndjuka Maroons. Participants reported environmental disinfection as being very complex. CONCLUSIONS The treatment of scabies in traditional Guianan communities may vary depending on local perceptions of galenic formulations, disease-associated stigma and differences in access to health care. These factors should be taken into account when devising strategies for the control of scabies aimed at traditional communities living in remote areas, and migrant populations.
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Affiliation(s)
- R Blaizot
- Centre Hospitalier de Cayenne, Service de Dermatologie, Cayenne, French Guiana
- Centre Hospitalier de Cayenne Inserm CIC 1424, Centre d'Investigations Cliniques, Cayenne, French Guiana
- UMR 1019 Tropical Biomes and Immunophysiopathology (TBIP), Université de Guyane, Cayenne, French Guiana
- Groupe Infectiologie Dermatologique- Infections Sexuellement Transmissibles, Société Française de Dermatologie, Paris, France
- Centre Hospitalier de Cayenne, Centres Délocalisés de Prévention et de Soins, Cayenne, French Guiana
| | - F Armanville
- Centre Hospitalier de Cayenne, Centres Délocalisés de Prévention et de Soins, Cayenne, French Guiana
| | - C Michaud
- Centre Hospitalier de Cayenne, Centres Délocalisés de Prévention et de Soins, Cayenne, French Guiana
| | - C Boceno
- Centre Hospitalier de Cayenne, Permanence d'Accès aux Soins de Santé, Cayenne, French Guiana
| | - O Dupart
- Centre Hospitalier de Cayenne, Permanence d'Accès aux Soins de Santé, Cayenne, French Guiana
| | - C Pansart
- Centre Hospitalier de Cayenne, Permanence d'Accès aux Soins de Santé, Cayenne, French Guiana
| | - F Niemetzky
- Centre Hospitalier de Cayenne, Centres Délocalisés de Prévention et de Soins, Cayenne, French Guiana
| | - P Couppie
- Centre Hospitalier de Cayenne, Service de Dermatologie, Cayenne, French Guiana
- UMR 1019 Tropical Biomes and Immunophysiopathology (TBIP), Université de Guyane, Cayenne, French Guiana
| | - M Nacher
- Centre Hospitalier de Cayenne Inserm CIC 1424, Centre d'Investigations Cliniques, Cayenne, French Guiana
| | - A Adenis
- Centre Hospitalier de Cayenne Inserm CIC 1424, Centre d'Investigations Cliniques, Cayenne, French Guiana
| | - O Chosidow
- Groupe Infectiologie Dermatologique- Infections Sexuellement Transmissibles, Société Française de Dermatologie, Paris, France
- Assistance Publique-Hôpitaux de Paris, Hôpital Universitaire La Pitié-Salpêtrière, Paris, France
| | - A Duvignaud
- Department of Infectious Diseases and Tropical Medicine, CHU Bordeaux, Bordeaux, France
- Bordeaux Population Health Centre, University of Bordeaux, INSERM UMR 1219, IRD EMR 271, Bordeaux, France
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Celone M, Beeman S, Han BA, Potter AM, Pecor DB, Okech B, Pollett S. Understanding transmission risk and predicting environmental suitability for Mayaro Virus in Central and South America. PLoS Negl Trop Dis 2024; 18:e0011859. [PMID: 38194417 PMCID: PMC10775973 DOI: 10.1371/journal.pntd.0011859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 12/12/2023] [Indexed: 01/11/2024] Open
Abstract
Mayaro virus (MAYV) is a mosquito-borne Alphavirus that is widespread in South America. MAYV infection often presents with non-specific febrile symptoms but may progress to debilitating chronic arthritis or arthralgia. Despite the pandemic threat of MAYV, its true distribution remains unknown. The objective of this study was to clarify the geographic distribution of MAYV using an established risk mapping framework. This consisted of generating evidence consensus scores for MAYV presence, modeling the potential distribution of MAYV in select countries across Central and South America, and estimating the population residing in areas suitable for MAYV transmission. We compiled a georeferenced compendium of MAYV occurrence in humans, animals, and arthropods. Based on an established evidence consensus framework, we integrated multiple information sources to assess the total evidence supporting ongoing transmission of MAYV within each country in our study region. We then developed high resolution maps of the disease's estimated distribution using a boosted regression tree approach. Models were developed using nine climatic and environmental covariates that are related to the MAYV transmission cycle. Using the output of our boosted regression tree models, we estimated the total population living in regions suitable for MAYV transmission. The evidence consensus scores revealed high or very high evidence of MAYV transmission in several countries including Brazil (especially the states of Mato Grosso and Goiás), Venezuela, Peru, Trinidad and Tobago, and French Guiana. According to the boosted regression tree models, a substantial region of South America is suitable for MAYV transmission, including north and central Brazil, French Guiana, and Suriname. Some regions (e.g., Guyana) with only moderate evidence of known transmission were identified as highly suitable for MAYV. We estimate that approximately 58.9 million people (95% CI: 21.4-100.4) in Central and South America live in areas that may be suitable for MAYV transmission, including 46.2 million people (95% CI: 17.6-68.9) in Brazil. Our results may assist in prioritizing high-risk areas for vector control, human disease surveillance and ecological studies.
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Affiliation(s)
- Michael Celone
- Department of Preventive Medicine & Biostatistics, Uniformed Services University of the Health Sciences, F. Edward Hébert School of Medicine, Bethesda, Maryland, United States of America
| | - Sean Beeman
- Department of Preventive Medicine & Biostatistics, Uniformed Services University of the Health Sciences, F. Edward Hébert School of Medicine, Bethesda, Maryland, United States of America
| | - Barbara A. Han
- Cary Institute of Ecosystem Studies, Millbrook, New York, United States of America
| | - Alexander M. Potter
- One Health Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
- Walter Reed Biosystematics Unit, Smithsonian Museum Support Center, Suitland, Maryland, United States of America
- Department of Entomology, Smithsonian Institution—National Museum of Natural History (NMNH), Washington, DC, United States of America
| | - David B. Pecor
- One Health Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
- Walter Reed Biosystematics Unit, Smithsonian Museum Support Center, Suitland, Maryland, United States of America
- Department of Entomology, Smithsonian Institution—National Museum of Natural History (NMNH), Washington, DC, United States of America
| | - Bernard Okech
- Department of Preventive Medicine & Biostatistics, Uniformed Services University of the Health Sciences, F. Edward Hébert School of Medicine, Bethesda, Maryland, United States of America
| | - Simon Pollett
- Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, Maryland, United States of America
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Maury-Brachet R, Dassié ÉP, Legeay A, Gonzalez P, Feurtet-Mazel A, Gourand F, Dominique Y, Vigouroux R. Influence of a hydroelectric dam on fish mercury contamination along the Sinnamary River ( French Guiana). Ecotoxicol Environ Saf 2024; 269:115771. [PMID: 38100848 DOI: 10.1016/j.ecoenv.2023.115771] [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] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 12/17/2023]
Abstract
The Petit Saut hydroelectric dam and the upstream and downstream areas of the Sinnamary River in French Guiana (Amazon basin) have been studied from 1993 to 2020. The nearly thirty-years-long study of the monitoring of total mercury concentration in fish and the physicochemical survey of the environment made it possible to demonstrate the impact of the flooding of the forest and the role of the hydroelectric dam on the methylation of mercury. Results show that the physicochemical modifications generated by the construction of the dam led to a significant production of methylmercury (MeHg) in the anoxic part of the reservoir and downstream of the river leading to a strong spatio-temporal impact of the dam. Seven species of fishes are studied and their mercury concentrations vary according to many parameters: fish diet, position in the water column, site, lake oxycline level and time.
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Affiliation(s)
| | - Émilie P Dassié
- Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France.
| | - Alexia Legeay
- Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France
| | - Patrice Gonzalez
- Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France
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DESCHAMPS C, BARDON T, BLAISE T, BONIFAY T, BOUTROU M, FREMERY A, HENRY K, LAMBERT Y, LE TURNIER P, MUTRICY R, OBERLIS M, QUINTIN B, SAUVAGE B, THOMAS E, EPELBOIN L, HUREAU-MUTRICY L. [6th day dedicated to the scientific works of caregivers in French Guiana. Our caregivers have talent! May 25 & 26, 2023, Cayenne, French Guiana]. Med Trop Sante Int 2023; 3:mtsi.v3i4.2023.439. [PMID: 38390010 PMCID: PMC10879897 DOI: 10.48327/mtsi.v3i4.2023.439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 08/07/2023] [Indexed: 02/24/2024]
Affiliation(s)
- Camille DESCHAMPS
- Service d'accueil des urgences, SAMU/SMUR, Centre hospitalier de Cayenne, Guyane, France
| | - Teddy BARDON
- Centre d'investigation clinique Antilles-Guyane, CIC INSERM 1424, Centre hospitalier de Cayenne, Guyane
| | - Théo BLAISE
- Centre d'investigation clinique Antilles-Guyane, CIC INSERM 1424, Centre hospitalier de Cayenne, Guyane
| | - Timothée BONIFAY
- Centre d'investigation clinique Antilles-Guyane, CIC INSERM 1424, Centre hospitalier de Cayenne, Guyane
- Unité sanitaire en milieu pénitentiaire de Rémire, Centre hospitalier de Cayenne, Guyane
| | - Mathilde BOUTROU
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Guyane
| | - Alexis FREMERY
- Service d'accueil des urgences, SAMU/SMUR, Centre hospitalier de Cayenne, Guyane, France
| | - Kim HENRY
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Guyane
| | - Yann LAMBERT
- Centre d'investigation clinique Antilles-Guyane, CIC INSERM 1424, Centre hospitalier de Cayenne, Guyane
| | - Paul LE TURNIER
- Centre d'investigation clinique Antilles-Guyane, CIC INSERM 1424, Centre hospitalier de Cayenne, Guyane
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Guyane
| | - Rémi MUTRICY
- Service d'accueil des urgences, SAMU/SMUR, Centre hospitalier de Cayenne, Guyane, France
| | | | - Benoît QUINTIN
- Centre délocalisé de prévention et de soins de Saint-Georges-de-l'Oyapock, Centre hospitalier de Cayenne, Guyane
| | | | - Estelle THOMAS
- Centre d'investigation clinique Antilles-Guyane, CIC INSERM 1424, Centre hospitalier de Cayenne, Guyane
| | - Loïc EPELBOIN
- Centre d'investigation clinique Antilles-Guyane, CIC INSERM 1424, Centre hospitalier de Cayenne, Guyane
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Guyane
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8
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Makembi Bunkete A, Fermigier F, Dossou-Yovo S, Mombo JB, Sindani J, Thorey C, Kezza C, Samou F, Djiconkpode I. Favorable evolution of severe paraquat poisoning. Treatment with gastric lavage, activated charcoal, cyclophosphamide + corticoids, and conventional daily hemodialysis: case study at the Franck Joly Hospital Center in French Guiana. Nephrol Ther 2023; 19:600-606. [PMID: 38059846 DOI: 10.1684/ndt.2023.55] [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] [Indexed: 12/08/2023]
Abstract
We report the observations of two patients, having voluntarily ingested lethal doses of paraquat with suicidal intent, with an unfavorable prognostic score. The treatment consisted of gastric lavage, administration of activated charcoal, n-acetylcysteine and cyclophosphamide + methylprednisolone + dexamethasone. The installation of acute renal failure motivated the initiation of daily conventional hemodialysis (HD) over 10 to 14 days, with a favorable evolution. The following complications were recorded: anemia, bacteremia and deep vein thrombosis. These observations raise three questions in the treatment of paraquat intoxication: the effectiveness of HD, the interest of its association with the above therapies in the prevention of pulmonary fibrosis, and the need for infectious prevention and thromboembolism. Furthermore, the absence of a paraquatemia assay cannot constitute a limitation for management, and hemoperfusion on an inaccessible charcoal column can be replaced by an HD usually available.
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Affiliation(s)
- Arriel Makembi Bunkete
- Néphrologie-dialyse, Centre hospitalier Franck Joly, bd de la Liberté, 97320 Saint-Laurent du Maroni, Guyane
| | - Florence Fermigier
- Néphrologie-dialyse, Centre hospitalier Franck Joly, bd de la Liberté, 97320 Saint-Laurent du Maroni, Guyane
| | - Sénan Dossou-Yovo
- Médecine interne, Centre hospitalier Franck Joly, bd de la Liberté, 97320 Saint-Laurent du Maroni, Guyane
| | - J B Mombo
- Urgences, Centre hospitalier Franck Joly, bd de la Liberté, 97320 Saint-Laurent du Maroni, Guyane
| | - Junior Sindani
- Urgences, Centre hospitalier Franck Joly, bd de la Liberté, 97320 Saint-Laurent du Maroni, Guyane
| | - Camille Thorey
- Médecine interne, Centre hospitalier Franck Joly, bd de la Liberté, 97320 Saint-Laurent du Maroni, Guyane
| | - Crépin Kezza
- Médecine interne, Centre hospitalier Franck Joly, bd de la Liberté, 97320 Saint-Laurent du Maroni, Guyane
| | - Franklin Samou
- Médecine interne, Centre hospitalier Franck Joly, bd de la Liberté, 97320 Saint-Laurent du Maroni, Guyane
| | - Irénée Djiconkpode
- Néphrologie-dialyse, Centre hospitalier Franck Joly, bd de la Liberté, 97320 Saint-Laurent du Maroni, Guyane
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9
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Talaga S, Duchemin JB. Mosquitoes (Diptera: Culicidae) of the Amazonian savannas of French Guiana with a description of two new species. J Vector Ecol 2023; 49:15-27. [PMID: 38147298 DOI: 10.52707/1081-1710-49.1.15] [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] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 09/26/2023] [Indexed: 12/27/2023]
Abstract
Amazonian savannas are among the most noteworthy landscape components of the coastal plain of French Guiana. Although they cover only 0.22% of the territory, they bring together a large part of the animal and plant diversity of this overseas region of France. This article outlines the results of the first study dedicated to mosquitoes (Diptera: Culicidae) of Amazonian savannas. Samplings were conducted in eight independent savannas evenly distributed along a transect of 170 km on the coastal plain of French Guiana. A total of 50 mosquito species were recorded, which is about 20% of the culicid fauna currently known in French Guiana. Among them, Culex (Melanoconion) organaboensis sp. nov. and Cx. (Mel.) zabanicus sp. nov. are newly described based on both morphological features of the male genitalia and a DNA barcode obtained from type specimens. Diagnostic characters to assist their identification are provided and their placement within the infrasubgeneric classification of the subgenus Melanoconion is discussed.
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Affiliation(s)
- Stanislas Talaga
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Unité d'Entomologie Médicale, 97300, Cayenne, French Guiana,
| | - Jean-Bernard Duchemin
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Unité d'Entomologie Médicale, 97300, Cayenne, French Guiana
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10
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Sanborn AF. Two new species and two new records for cicadas (Hemiptera: Cicadidae) from French Guiana, with an updated faunal list of French Guiana and the first synoptic list for Guyana. Zootaxa 2023; 5368:1-74. [PMID: 38220729 DOI: 10.11646/zootaxa.5368.1.1] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Indexed: 01/16/2024]
Abstract
Zammara conflutrimacula n. sp. and Fidicinoides ininiensis n. sp. are described as new. The first records of Guyalna polypaga Sanborn, 2019 and Taphura dolabella Sanborn, 2017 are reported for French Guiana. Cicada clarisona Hancock, 1834 nomen nudum, revised status, is shown to be unavailable. The first synoptic list of cicadas for Guyana is provided. The currently known cicada fauna for French Guiana is 73 species, 20 genera, five tribes, and three subfamilies. The known fauna of Guyana is 12 species, nine genera, two tribes and one subfamily.
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11
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Vaessen RW, van Wijngaarden K, Boeschoten L, Knippers R, Durazzo L, Verkuil L, van Kuijk M. Fruit and seed traits and vertebrate-fruit interactions of tree species occurring in Guyana, Suriname, and French Guiana. Ecology 2023; 104:e4165. [PMID: 37671913 DOI: 10.1002/ecy.4165] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 06/11/2023] [Accepted: 06/20/2023] [Indexed: 09/07/2023]
Abstract
Seed dispersal is widely considered an important mechanism for the conservation of plant diversity. In tropical regions, over 80% of woody plant species are dispersed by vertebrates, often through the consumption of fruits. Our understanding of what drives interactions between vertebrates and fruits is limited. Through a systematic literature search, we compiled a database of fruit and seed traits and vertebrate-fruit interactions for tree and vertebrate species occurring in the Guianas, with the aim of facilitating research into seed dispersal and seed predation of tree species in the Guianas. The database was compiled by extracting data from 264 published sources. It consists of 21,082 records, of which 19,039 records contain information about 19 different fruit and seed traits belonging to 1622 different tree species. The other 2043 records contain information on vertebrate-fruit interactions between 161 vertebrate species and 464 tree species. Our analyses showed a taxonomic bias, particularly in the interaction data, toward large-bodied vertebrates, with most interactions recorded for the bearded saki (Chiropotes chiropotes), followed by the lowland tapir (Tapirus terrestris). For plants we found an overrepresentation of the Sapotaceae and Moraceae families and an underrepresentation of the Rubiaceae, Myrtaceae, and Lauraceae families in the interactions. There are no copyright restrictions on the data set; please cite this publication when using these data.
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Affiliation(s)
- Rens W Vaessen
- Ecology and Biodiversity group, Department of Biology, Utrecht University, Utrecht, The Netherlands
| | - Klaske van Wijngaarden
- Ecology and Biodiversity group, Department of Biology, Utrecht University, Utrecht, The Netherlands
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, UK
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, New South Wales, Australia
| | - Laura Boeschoten
- Ecology and Biodiversity group, Department of Biology, Utrecht University, Utrecht, The Netherlands
- Forest Ecology and Forest Management Group, Wageningen University and Research, Wageningen, The Netherlands
| | - Ronja Knippers
- Ecology and Biodiversity group, Department of Biology, Utrecht University, Utrecht, The Netherlands
| | - Livia Durazzo
- Ecology and Biodiversity group, Department of Biology, Utrecht University, Utrecht, The Netherlands
| | - Loes Verkuil
- Ecology and Biodiversity group, Department of Biology, Utrecht University, Utrecht, The Netherlands
| | - Marijke van Kuijk
- Ecology and Biodiversity group, Department of Biology, Utrecht University, Utrecht, The Netherlands
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12
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Sardans J, Llusià J, Ogaya R, Vallicrosa H, Filella I, Gargallo-Garriga A, Peguero G, Van Langenhove L, Verryckt LT, Stahl C, Courtois EA, Bréchet LM, Tariq A, Zeng F, Alrefaei AF, Wang W, Janssens IA, Peñuelas J. Foliar elementome and functional traits relationships identify tree species niche in French Guiana rainforests. Ecology 2023; 104:e4118. [PMID: 37282712 DOI: 10.1002/ecy.4118] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 03/28/2023] [Indexed: 06/08/2023]
Abstract
Biogeochemical niche (BN) hypothesis aims to relate species/genotype elemental composition with its niche based on the fact that different elements are involved differentially in distinct plant functions. We here test the BN hypothesis through the analysis of the 10 foliar elemental concentrations and 20 functional-morphological of 60 tree species in a French Guiana tropical forest. We observed strong legacy (phylogenic + species) signals in the species-specific foliar elemental composition (elementome) and, for the first time, provide empirical evidence for a relationship between species-specific foliar elementome and functional traits. Our study thus supports the BN hypothesis and confirms the general niche segregation process through which the species-specific use of bio-elements drives the high levels of α-diversity in this tropical forest. We show that the simple analysis of foliar elementomes may be used to test for BNs of co-occurring species in highly diverse ecosystems, such as tropical rainforests. Although cause and effect mechanisms of leaf functional and morphological traits in species-specific use of bio-elements require confirmation, we posit the hypothesis that divergences in functional-morphological niches and species-specific biogeochemical use are likely to have co-evolved.
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Affiliation(s)
- Jordi Sardans
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Spain
- CREAF, Cerdanyola del Vallès, Spain
| | - Joan Llusià
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Spain
- CREAF, Cerdanyola del Vallès, Spain
| | - Romà Ogaya
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Spain
- CREAF, Cerdanyola del Vallès, Spain
| | - Helen Vallicrosa
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Spain
- CREAF, Cerdanyola del Vallès, Spain
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Iolanda Filella
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Spain
- CREAF, Cerdanyola del Vallès, Spain
| | - Albert Gargallo-Garriga
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Spain
- CREAF, Cerdanyola del Vallès, Spain
| | - Guille Peguero
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Spain
- CREAF, Cerdanyola del Vallès, Spain
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Universitat de Barcelona, Barcelona, Spain
| | - Leandro Van Langenhove
- Research Group of Plants and Ecosystems (PLECO), Department of Biology, University of Antwerp, Antwerpen, Belgium
| | - Lore T Verryckt
- Research Group of Plants and Ecosystems (PLECO), Department of Biology, University of Antwerp, Antwerpen, Belgium
| | - Clément Stahl
- INRAE, UMR EcoFoG, CNRS, CIRAD, AgroParisTech, Université des Antilles, Université de Guyane, Kourou, France
| | - Elodie A Courtois
- INRAE, UMR EcoFoG, CNRS, CIRAD, AgroParisTech, Université des Antilles, Université de Guyane, Kourou, France
| | - Laëtitia M Bréchet
- Research Group of Plants and Ecosystems (PLECO), Department of Biology, University of Antwerp, Antwerpen, Belgium
- INRAE, UMR EcoFoG, CNRS, CIRAD, AgroParisTech, Université des Antilles, Université de Guyane, Kourou, France
| | - Akash Tariq
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, China
| | - Fanjiang Zeng
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, China
| | | | - Weiqi Wang
- Key Laboratory of Humid Subtropical Eco-Geographical Process, Ministry of Education, Fujian Normal University, Fuzhou, China
- College of Geographical Sciences, Fujian Normal University, Fuzhou, China
| | - Ivan A Janssens
- Research Group of Plants and Ecosystems (PLECO), Department of Biology, University of Antwerp, Antwerpen, Belgium
| | - Josep Peñuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Spain
- CREAF, Cerdanyola del Vallès, Spain
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13
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Brun-Rambaud G, Alcouffe L, Tareau MA, Adenis A, Vignier N. Access to health care for migrants in French Guiana in 2022: a qualitative study of health care system actors. Front Public Health 2023; 11:1185341. [PMID: 37920590 PMCID: PMC10619762 DOI: 10.3389/fpubh.2023.1185341] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 09/22/2023] [Indexed: 11/04/2023] Open
Abstract
Background Access to health care is a major public health issue. The social determinants of health have a role in accessing health care and in meeting the health needs of populations. With 281 million international migrants around the world, population movements are another major issue. Migrants are particularly exposed to precariousness during their migratory journey and after their settlement. These vulnerabilities may have deleterious effects on their health status and on their social conditions. In French Guiana, 36% of the population is of foreign origin. The objective of this study is to explore the barriers and the facilitators to accessing health care for migrants in French Guiana in 2022, from the perspective of health care professionals, social workers and local NGO actors. Methods This research is an exploratory qualitative study based on the experiential knowledge of health care professionals, social workers and local NGO actors in French Guiana. 25 semi-structured interviews were conducted with these professionals and actors between April and June 2022, using an interview guide to explore their practices, representations and beliefs of access to health care and accompaniment of migrants in their patient journey. The interviews were transcribed and analyzed using the thematic analysis method. Results A total of 25 health care professionals, social workers and local NGO actors were included in the study. Participants highlighted that migrants are exposed to many factors hindering their access to health care in French Guiana (administrative complexity, language barriers, financial barriers, mobility issues, etc.). With the situations of great precariousness and the inadequacies of the public authorities, associative support (social, health and legal accompaniment process provided by NGOs and associations) has an important role in providing close support to migrants. Moreover, health mediation supports migrants in their social and health care journey to lead them toward empowerment. Health mediators contribute to promote a better understanding between professionals and migrants. Conclusion In French Guiana, associative support and health mediation promote access to health care and social accompaniment for migrants. This article highlights the issues surrounding access to health care, associative support and health mediation in the Guianese context, which is marked by significant socio-cultural diversity and precariousness. Considering the benefits of associative support and health mediation, as well as social inequalities in health, is essential for health care professionals, social workers, local NGO actors, associations, public health authorities and political decision-makers to initiate concrete and suitable actions in favor of access to health care and social support for migrants in French Guiana.
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Affiliation(s)
- Gabriel Brun-Rambaud
- Centre d'Investigation Clinique Antilles Guyane, Inserm CIC 1424, COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Leslie Alcouffe
- Centre d'Investigation Clinique Antilles Guyane, Inserm CIC 1424, COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Marc-Alexandre Tareau
- Centre d'Investigation Clinique Antilles Guyane, Inserm CIC 1424, COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Antoine Adenis
- Centre d'Investigation Clinique Antilles Guyane, Inserm CIC 1424, COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Nicolas Vignier
- Centre d'Investigation Clinique Antilles Guyane, Inserm CIC 1424, COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- Hôpital Jean Verdier, AP-HP, UFR SMBH, Hôpitaux Universitaires Paris Seine-Saint-Denis, Hôpital Avicenne, Université Sorbonne Paris Nord, Bobigny, France
- IAME, Inserm UMR 1137, Université Sorbonne Paris Nord, Université Paris Cité, Paris, France
- Institut Convergences et Migrations, Health and Policy Departments, Aubervilliers, France
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14
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Ramírez ADR, de Jesus MCS, Menezes RAO, Santos-Filho MC, Gomes MSM, Pimenta TS, Barbosa VS, Rossit J, Reis NF, Brito SCP, Sampaio MP, Cassiano GC, Storti-Melo LM, Baptista ARS, Machado RLD. Polymorphisms in Toll-Like receptors genes and their associations with immunological parameters in Plasmodium vivax malaria in the Brazil- French Guiana Border. Cytokine 2023; 169:156278. [PMID: 37356261 DOI: 10.1016/j.cyto.2023.156278] [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: 02/14/2023] [Revised: 06/08/2023] [Accepted: 06/10/2023] [Indexed: 06/27/2023]
Abstract
BACKGROUND The innate immune response plays an important role during malaria. Toll-like receptors (TLR) are capable of recognizing pathogen molecules. We aimed to evaluate five polymorphisms in TLR-4, TLR-6, and TLR-9 genes and their association with cytokine levels and clinical parameters in malaria from the Brazil-French Guiana border. METHODS A case-control study was conducted in Amapá, Brazil. P. vivax patients and individuals not infected were evaluated. Genotyping of five SNPs was carried out by qPCR. Circulating cytokines were measured by CBA. The MSP-119 IgG antibodies were performed by ELISA. RESULTS An association between TLR4 A299G with parasitemia was observed. There was an increase for IFN-ɤ, TNF-ɑ, IL-6, and IL-10 in the TLR-4 A299G and T3911, TLR-6 S249P, and TLR-9 1486C/T, SNPs for the studied malarial groups. There were significant findings for the TLR-4 variants A299G and T3911, TLR-9 1237C/T, and 1486C/T. For the reactivity of MSP-119 antibodies levels, no significant results were found in malaria, and control groups. CONCLUSIONS The profile of the immune response observed by polymorphisms in TLRs genes does not seem to be standard for all types of malaria infection around the world. This can depend on the human population and the species of Plasmodium.
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Affiliation(s)
- Aina D R Ramírez
- Center for Microorganisms' Investigation, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24020-141 Rio de Janeiro, Brazil; Postgraduate Program in Applied Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24210-130 Rio de Janeiro, Brazil
| | - Myrela C S de Jesus
- Center for Microorganisms' Investigation, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24020-141 Rio de Janeiro, Brazil; Postgraduate Program in Applied Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24210-130 Rio de Janeiro, Brazil
| | - Rubens A O Menezes
- Postgraduate Program in Applied Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24210-130 Rio de Janeiro, Brazil; Postgraduate Program in Health Sciences, Federal University of Amapá (UNIFAP), Macapá 68903-419, Amapá, Brazil
| | - Marcelo C Santos-Filho
- Center for Microorganisms' Investigation, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24020-141 Rio de Janeiro, Brazil; Postgraduate Program in Applied Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24210-130 Rio de Janeiro, Brazil
| | - Margarete S M Gomes
- Superintendence of Health Surveillance of the State of Amapá, Macapá 68902-865, Amapá, Brazil
| | - Tamirys S Pimenta
- Instituto Evandro Chagas / Secretaria de Vigilância em Saude / Ministério da Saude, Ananindeua 67030-000, Pará, Brazil
| | - Vanessa S Barbosa
- Center for Microorganisms' Investigation, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24020-141 Rio de Janeiro, Brazil
| | - Julia Rossit
- Center for Microorganisms' Investigation, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24020-141 Rio de Janeiro, Brazil
| | - Nathalia F Reis
- Center for Microorganisms' Investigation, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24020-141 Rio de Janeiro, Brazil; Postgraduate Program in Applied Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24210-130 Rio de Janeiro, Brazil
| | - Simone Cristina Pereira Brito
- Center for Microorganisms' Investigation, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24020-141 Rio de Janeiro, Brazil; Postgraduate Program in Applied Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24210-130 Rio de Janeiro, Brazil
| | - Marrara Pereira Sampaio
- Center for Microorganisms' Investigation, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24020-141 Rio de Janeiro, Brazil; Postgraduate Program in Applied Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24210-130 Rio de Janeiro, Brazil
| | | | - Luciane M Storti-Melo
- Laboratory of Molecular Genetics and Biotechnology, Department of Biology, Center for Biological and Health Sciences, Federal University of Sergipe, São Cristóvão 49100-000, Sergipe, Brazil
| | - Andrea R S Baptista
- Center for Microorganisms' Investigation, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24020-141 Rio de Janeiro, Brazil; Postgraduate Program in Applied Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24210-130 Rio de Janeiro, Brazil
| | - Ricardo L D Machado
- Center for Microorganisms' Investigation, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24020-141 Rio de Janeiro, Brazil; Postgraduate Program in Applied Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, 24210-130 Rio de Janeiro, Brazil.
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15
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Douine M, Cairo H, Galindo MS, Vreden S, Lambert Y, Adenis A, Jimeno I, Suarez-Mutis M, Sanna A, Hiwat H. From an interventional study to a national scale-up: lessons learned from the Malakit strategy at the French Guiana-Suriname border. Malar J 2023; 22:237. [PMID: 37587474 PMCID: PMC10429066 DOI: 10.1186/s12936-023-04672-6] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 08/11/2023] [Indexed: 08/18/2023] Open
Abstract
Scaling-up an experimental intervention is always a challenge. On the border between French Guiana, Brazil and Suriname, an interventional study demonstrated the effectiveness of distributing self-diagnosis and self-treatment kits (Malakits) to control malaria in mobile and hard-to-reach populations. Its integration into the Suriname's National Malaria Elimination Plan after a 2-year experiment faced numerous challenges, including human resources to cope with the additional workload of coordinators and to maintain the motivation of community health workers. The economic recession in Suriname, the Covid pandemic, and logistical issues also hampered the scale-up. Finally, thanks to the commitment of stakeholders in Suriname and French Guiana, the integration of Malakit distribution into the Surinamese national programme was proved possible.
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Affiliation(s)
- Maylis Douine
- Inserm CIC 1424, Cayenne Hospital, Centre d'Investigation Clinique Antilles-Guyane, Cayenne, French Guiana.
- TBIP, CNRS, Inserm, U1019-UMR9017-CIIL Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Université de Guyane, Université de Lille, Cayenne, French Guiana.
| | - Hedley Cairo
- National Malaria Elimination Programme, Ministry of Health of Suriname, Paramaribo, Suriname
| | - Muriel Suzanne Galindo
- Inserm CIC 1424, Cayenne Hospital, Centre d'Investigation Clinique Antilles-Guyane, Cayenne, French Guiana
| | - Stephen Vreden
- Foundation for the Advancement of Scientific Research, Paramaribo, Suriname
| | - Yann Lambert
- Inserm CIC 1424, Cayenne Hospital, Centre d'Investigation Clinique Antilles-Guyane, Cayenne, French Guiana
| | - Antoine Adenis
- Inserm CIC 1424, Cayenne Hospital, Centre d'Investigation Clinique Antilles-Guyane, Cayenne, French Guiana
- TBIP, CNRS, Inserm, U1019-UMR9017-CIIL Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Université de Guyane, Université de Lille, Cayenne, French Guiana
| | - Irene Jimeno
- Inserm CIC 1424, Cayenne Hospital, Centre d'Investigation Clinique Antilles-Guyane, Cayenne, French Guiana
| | - Martha Suarez-Mutis
- Laboratory of Parasitic Diseases, Institute Oswaldo Cruz/Fiocruz, Rio de Janeiro, Brazil
| | - Alice Sanna
- Inserm CIC 1424, Cayenne Hospital, Centre d'Investigation Clinique Antilles-Guyane, Cayenne, French Guiana
| | - Hélène Hiwat
- National Malaria Elimination Programme, Ministry of Health of Suriname, Paramaribo, Suriname
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Vezenegho S, Carinci R, Issaly J, Nguyen C, Gaborit P, Ferraro L, Lacour G, Mosnier E, Pommier de Santi V, Epelboin Y, Girod R, Briolant S, Dusfour I. Variation in Pyrethroid Resistance Phenotypes in Anopheles darlingi in an Area with Residual Malaria Transmission: Warning of Suspected Resistance in French Guiana. Am J Trop Med Hyg 2023; 108:424-427. [PMID: 36535248 PMCID: PMC9896345 DOI: 10.4269/ajtmh.20-1611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 11/09/2021] [Indexed: 12/23/2022] Open
Abstract
Anopheles darlingi is the main vector of malaria in South America. In French Guiana, malaria transmission occurs inland and along the rivers with a regular reemergence in the lower Oyapock area. Control against malaria vectors includes indoor residual spraying of deltamethrin and the distribution of long-lasting impregnated bednets. In this context, the level of resistance to pyrethroids was monitored for 4 years using CDC bottle tests in An. darlingi populations. A loss of susceptibility to pyrethroids was recorded with 30-minute knock-down measured as low as 81%. However, no pyrethroid molecular resistance was found by sequencing a 170 base pair fragment of the S6 segment of domain II of the voltage-gated sodium channel gene. Fluctuation of resistance phenotypes may be influenced by the reintroduction of susceptible alleles from sylvatic populations or by other mechanisms of metabolic resistance.
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Affiliation(s)
- Samuel Vezenegho
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana, France
| | - Romuald Carinci
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana, France
| | - Jean Issaly
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana, France
| | - Christophe Nguyen
- Unité de Parasitologie et Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
- Aix Marseille Université, IRD, AP-HM, SSA, UMR Vecteurs—Infections Tropicales et Méditerranéennes (VITROME), IHU—Méditerranée Infection, Marseille, France
| | - Pascal Gaborit
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana, France
| | - Laetitia Ferraro
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana, France
| | - Guillaume Lacour
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana, France
| | - Emilie Mosnier
- Unité des Maladies Infectieuses et Tropicales, Centre Hospitalier Andrée Rosemon, rue des Flamboyants, Cayenne, French Guiana, France
- Aix Marseille University, INSERM, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, Marseille, France
| | - Vincent Pommier de Santi
- Aix Marseille Université, IRD, AP-HM, SSA, UMR Vecteurs—Infections Tropicales et Méditerranéennes (VITROME), IHU—Méditerranée Infection, Marseille, France
- Centre d’Epidémiologie et de Santé Publique des Armées, Marseille, France
| | - Yanouk Epelboin
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana, France
| | - Romain Girod
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana, France
- Unité d’Entomologie Médicale, Institut Pasteur de Madagascar, Antananarivo, Madagascar
| | - Sebastien Briolant
- Unité de Parasitologie et Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
- Aix Marseille Université, IRD, AP-HM, SSA, UMR Vecteurs—Infections Tropicales et Méditerranéennes (VITROME), IHU—Méditerranée Infection, Marseille, France
| | - Isabelle Dusfour
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana, France
- Département de Santé Globale, Institut Pasteur, Paris, France
- MIVEGEC, Univ Montpellier, CNRS, IRD, Montpellier, France
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Ratsaphoumy Jurine A, Merlet R. Professionnels de santé et patients amérindiens : représentations et pratiques en Guyane française. Sante Publique 2022; 34:683-693. [PMID: 36577667 DOI: 10.3917/spub.225.0683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
CONTEXT In French Guiana, Amerindian populations find themselves in a health system whose therapeutic itinerary revolves around their traditional medicine and modern medicine provided by health professionals mostly from hexagonal France. The latter intervene in a “complexity of intercultural contact” which influences the caregiver-patient relationship and affects therapeutic adherence. METHOD To better understand the practices and representations of the health system in an intercultural context, qualitative research was carried out in the field between 2018 and 2019 with seventeen health professionals working in health centers located in the municipalities of the Interior of French Guiana. Semi-structured individual interviews were conducted in order to explore the representations, the difficulties encountered, and the tools used by these caregivers in their daily practice. These interviews were crossed with participant observations and bibliographical research in the medical and anthropological fields. RESULTS The caregiver-patient encounter was asymmetrical, unequal and was part of a power relationship. The caregivers remained marked by ethnocentric representations -inherent to each culture- far removed from those of the populations and this divergence impacted the practice. DISCUSSION It would be advisable to shift the focus in order to « penetrate » the frame of reference of the Other and rebalance relationships. The exploration of popular knowledge and skills and the application of proven teaching methods would encourage therapeutic adherence. « Homethnic workers » and intercultural training could help promote community health.
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18
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Lemaire J, Brischoux F, Marquis O, Mangione R, Caut S, Brault-Favrou M, Churlaud C, Bustamante P. Relationships between stable isotopes and trace element concentrations in the crocodilian community of French Guiana. Sci Total Environ 2022; 837:155846. [PMID: 35561901 DOI: 10.1016/j.scitotenv.2022.155846] [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] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 04/26/2022] [Accepted: 05/06/2022] [Indexed: 06/15/2023]
Abstract
Trace elements in the blood of crocodilians and the factors that influence their concentrations are overall poorly documented. However, determination of influencing factors is crucial to assess the relevance of caimans as bioindicators of environmental contamination, and potential toxicological impact of trace elements on these reptiles. In the present study, we determined the concentrations of 14 trace elements (Ag, As, Cd, Cr, Co, Cu, Fe, Hg, Pb, Mn, Ni, Se, V, and Zn) in the blood of four French Guiana caiman species (the Spectacled Caiman Caiman crocodilus [n = 34], the Black Caiman Melanosuchus niger [n = 25], the Dwarf Caiman Paleosuchus palpebrosus [n = 5] and the Smooth-fronted Caiman Paleosuchus trigonatus [n = 20]) from 8 different sites, and further investigated the influence of individual body size and stable isotopes as proxies of foraging habitat and trophic position on trace element concentrations. Trophic position was identified to be an important factor influencing trace element concentrations in the four caiman species and explained interspecific variations. These findings highlight the need to consider trophic ecology when crocodilians are used as bioindicators of trace element contamination in environmental studies.
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Affiliation(s)
- Jérémy Lemaire
- Centre d'Études Biologiques de Chizé (CEBC), UMR 7372 CNRS-La Rochelle Université, 79360 Villiers en Bois, France; Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17000 La Rochelle, France.
| | - François Brischoux
- Centre d'Études Biologiques de Chizé (CEBC), UMR 7372 CNRS-La Rochelle Université, 79360 Villiers en Bois, France
| | - Oliver Marquis
- Muséum national d'Histoire naturelle, Parc Zoologique de Paris, 53 avenue de Saint Maurice, 75012 Paris, France
| | - Rosanna Mangione
- Division of Behavioural Ecology, Institute of Ecology and Evolution, University of Bern, Wohlenstrasse 50a, CH-3032 Hinterkappelen, Switzerland
| | - Stéphane Caut
- Consejo Superior de Investigaciones Cientificas (CSIC), Departamento de Etologia y Conservation de La Biodiversidad - Estacion Biologica de Doñana - C/Americo Vespucio, S/n (Isla de La Cartuja), E-41092 Sevilla, Spain; ANIMAVEG Conservation, 58 Avenue Du Président Salvador Allende, F-94800 Villejuif, France
| | - Maud Brault-Favrou
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17000 La Rochelle, France
| | - Carine Churlaud
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17000 La Rochelle, France
| | - Paco Bustamante
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17000 La Rochelle, France; Institut Universitaire de France (IUF), 1 rue Descartes, 75005 Paris, France
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Polizei TTS, Fernandes AS, Hamada N. "Out of the Shield": the Discovery of Platyparnus Shepard and Barr, 2018 (Coleoptera: Dryopidae) in Brazil with New Species. Neotrop Entomol 2022; 51:256-269. [PMID: 35138602 DOI: 10.1007/s13744-022-00943-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
The Neotropical Dryopidae genus Platyparnus Shepard and Barr, 2018 was recently established based on three species originally described in Helichus Erichson, 1847: Platyparnus bollowi (Hinton, 1939), Platyparnus frater (Hinton, 1939) and Platyparnus gibbicollis (Hinton, 1939). Until now, the genus and its species have been reported solely in the Guiana Shield area (in French Guiana and Guyana). Based on the examination of material from several localities in Brazil, we report Platyparnus for the first time in the country and describe two new species based on males and females: Platyparnus beatriceae sp. nov. and Platyparnus glaucoi sp. nov. We also propose an amendment to the original diagnosis of Platyparnus, present an updated key to the species, and provide new records for P. frater. Since the new species described here and P. frater were found to occur below the Equator and far south the Amazon River, the geographic distribution of the genus is extended to outside the Guiana Shield.
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Affiliation(s)
- Thiago T S Polizei
- Lab de Coleoptera (LaC), Museu de Zoologia da Universidade de São Paulo (MZSP), São Paulo, São Paulo State, Brazil.
| | - André S Fernandes
- Lab de Entomologia, Universidade Federal do Tocantins (UFT), Campus de Porto Nacional, Porto Nacional, Tocantins, Brazil
| | - Neusa Hamada
- Lab de Citotaxonomia e Insetos Aquáticos (LACIA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Amazonas, Brazil
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20
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Fiard M, Cuny P, Sylvi L, Hubas C, Jézéquel R, Lamy D, Walcker R, El Houssainy A, Heimbürger-Boavida LE, Robinet T, Bihannic I, Gilbert F, Michaud E, Dirberg G, Militon C. Mangrove microbiota along the urban-to-rural gradient of the Cayenne estuary ( French Guiana, South America): Drivers and potential bioindicators. Sci Total Environ 2022; 807:150667. [PMID: 34599952 DOI: 10.1016/j.scitotenv.2021.150667] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/13/2021] [Accepted: 09/25/2021] [Indexed: 06/13/2023]
Abstract
The microbial communities inhabiting the Atlantic-East Pacific (AEP) mangroves have been poorly studied, and mostly comprise chronically polluted mangroves. In this study, we characterized changes in the structure and diversity of microbial communities of mangroves along the urban-to-rural gradient of the Cayenne estuary (French Guiana, South America) that experience low human impact. The microbial communities were assigned into 50 phyla. Proteobacteria, Chloroflexi, Acidobacteria, Bacteroidetes, and Planctomycetes were the most abundant taxa. The environmental determinants found to significantly correlated to the microbial communities at these mangroves were granulometry, dieldrin concentration, pH, and total carbon (TC) content. Furthermore, a precise analysis of the sediment highlights the existence of three types of anthropogenic pressure among the stations: (i) organic matter (OM) enrichment due to the proximity to the city and its wastewater treatment plant, (ii) dieldrin contamination, and (iii) naphthalene contamination. These forms of weak anthropogenic pressure seemed to impact the bacterial population size and microbial assemblages. A decrease in Bathyarchaeota, "Candidatus Nitrosopumilus", and Nitrospira genera was observed in mangroves subjected to OM enrichment. Mangroves polluted with organic contaminants were enriched in Desulfobacteraceae, Desulfarculaceae, and Acanthopleuribacteraceae (with dieldrin or polychlorobiphenyl contamination), and Chitinophagaceae and Geobacteraceae (with naphthalene contamination). These findings provide insights into the main environmental factors shaping microbial communities of mangroves in the AEP that experience low human impact and allow for the identification of several potential microbial bioindicators of weak anthropogenic pressure.
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Affiliation(s)
- Maud Fiard
- Aix Marseille Univ., Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France.
| | - Philippe Cuny
- Aix Marseille Univ., Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France.
| | - Léa Sylvi
- Aix Marseille Univ., Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France.
| | - Cédric Hubas
- Biologie des Organismes et Ecosystèmes Aquatiques (UMR 8067 BOREA) Muséum National D'Histoire Naturelle, CNRS, Sorbonne Université, IRD, UCN, UA, Station Marine de Concarneau, 29900 Concarneau, France.
| | | | - Dominique Lamy
- Biologie des Organismes et Ecosystèmes Aquatiques (UMR 8067 BOREA) Muséum National D'Histoire Naturelle, CNRS, Sorbonne Université, IRD, UCN, UA, Rue Buffon, 75005 Paris, France; Institute of Ecology and Environmental Sciences of Paris (iEES-Paris), Sorbonne Université, Univ Paris Est Créteil, IRD, CNRS, INRA, 4 place Jussieu, 75005 Paris, France.
| | - Romain Walcker
- Laboratoire Ecologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, Toulouse, France.
| | - Amonda El Houssainy
- Aix Marseille Univ., Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France.
| | | | - Tony Robinet
- Biologie des Organismes et Ecosystèmes Aquatiques (UMR 8067 BOREA) Muséum National D'Histoire Naturelle, CNRS, Sorbonne Université, IRD, UCN, UA, Station Marine de Concarneau, 29900 Concarneau, France.
| | | | - Franck Gilbert
- Laboratoire Ecologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, Toulouse, France.
| | - Emma Michaud
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, 29280 Plouzané, France.
| | - Guillaume Dirberg
- Biologie des Organismes et Ecosystèmes Aquatiques (UMR 8067 BOREA) Muséum National D'Histoire Naturelle, CNRS, Sorbonne Université, IRD, UCN, UA, Rue Buffon, 75005 Paris, France.
| | - Cécile Militon
- Aix Marseille Univ., Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France.
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Baltyde D, De Toffol B, Nacher M, Sabbah N. Epileptic seizures during Non-Ketotic Hyperglycemia (NKH) in French Guiana: A retrospective study. Front Endocrinol (Lausanne) 2022; 13:946642. [PMID: 36060985 PMCID: PMC9433648 DOI: 10.3389/fendo.2022.946642] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 08/01/2022] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION Epileptic seizures during non-ketotic hyperglycemia (NKH) represent a rare complication of uncontrolled diabetes mellitus. The definition associates a blood sugar level > 200mg/dL (11mmol/L), hyperosmolality, absence of ketosis, dehydration and seizure control after normalization of blood sugar levels. MATERIAL AND METHODS This retrospective observational study included patients hospitalized for epileptic seizures and NKH in the Cayenne Hospital Center between January 2010 and June 2020. The clinical, biological, and radiological results were collected. RESULTS 18 out of 228 (7.9%) patients with both diabetes and epileptic seizures had NKH. The mean age of the 12 women and 6 men was 64.8 years. In 8 patients, brain imaging did not show acute lesions and the seizures disappeared with control of hyperglycemia by hydration and insulin. In 6 patients, the seizures revealed a stroke, hemorrhagic in 4 cases, ischemic in 2 cases. 4 patients had a seizure in a context of known vascular epilepsy. The epileptic seizures were mainly focal seizures with motor symptoms that could be repeated, focal to bilateral tonic-clonic or focal status. CONCLUSION Seizures in NKH are symptomatic of an acute brain lesion or vascular epilepsy more than 1 in 2 times. However, isolated NKH can cause seizures with a suggestive brain MRI.
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Affiliation(s)
- Dimitri Baltyde
- Department of Endocrinology and Metabolic Diseases, Cayenne Hospital Center, Cayenne, French Guiana
| | - Bertrand De Toffol
- Clinical Investigation Center Antilles French Guiana (CIC INSERM 1424) Cayenne Hospital Center, Cayenne, French Guiana
- Department of Neurology, Cayenne Hospital Center, Cayenne, French Guiana
| | - Mathieu Nacher
- Clinical Investigation Center Antilles French Guiana (CIC INSERM 1424) Cayenne Hospital Center, Cayenne, French Guiana
| | - Nadia Sabbah
- Department of Endocrinology and Metabolic Diseases, Cayenne Hospital Center, Cayenne, French Guiana
- Clinical Investigation Center Antilles French Guiana (CIC INSERM 1424) Cayenne Hospital Center, Cayenne, French Guiana
- *Correspondence: Nadia Sabbah,
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22
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Jones JR, Badano D. The Genus Haploglenius Burmeister 1839 (Neuroptera: Ascalaphidae: Haplogleniinae) in French Guiana, with Description of a New Species. Neotrop Entomol 2021; 50:929-938. [PMID: 34427909 DOI: 10.1007/s13744-021-00889-9] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 05/03/2021] [Indexed: 06/13/2023]
Abstract
The species of Haploglenius of French Guiana are reviewed, and an identification key to the species occurring in the arrondissement is presented. A new species of the genus, Haploglenius legnotos, tentatively inferred to be endemic, is described, figured, and compared with congeners. It is diagnosed by its relatively short antennae among species in the genus, the presence of a well-developed pronotal valve in males, the HW cubital field with two rows of cells, the pterostigmata pale, and the wing pattern distinctive, the last character being unique in the genus. Diagnostic characteristics placing the new species within Haploglenius are discussed. The species H. abdominevittatus Ardila Camacho and Jones is newly recorded from the region. A distribution map of Haploglenius in French Guiana is provided, as is a DarwinCore-compliant database of material examined.
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Affiliation(s)
- Joshua R Jones
- Southwestern Research Station, American Museum of Natural History, Portal, USA.
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Plant Protection Quarantine (USDA APHIS PPQ), Laredo, TX, USA.
| | - Davide Badano
- Department of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome, Rome, Italy
- Museum of Zoology, Sapienza University of Rome, Rome, Italy
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23
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Cattel J, Minier M, Habchi-Hanriot N, Pol M, Faucon F, Gaude T, Gaborit P, Issaly J, Ferrero E, Chandre F, Pocquet N, David JP, Dusfour I. Impact of selection regime and introgression on deltamethrin resistance in the arbovirus vector Aedes aegypti - a comparative study between contrasted situations in New Caledonia and French Guiana. Pest Manag Sci 2021; 77:5589-5598. [PMID: 34398490 DOI: 10.1002/ps.6602] [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] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Pyrethroid insecticides such as deltamethrin have been massively used against Aedes aegypti leading to the spread of resistance alleles worldwide. In an insecticide resistance management context, we evaluated the temporal dynamics of deltamethrin resistance using two distinct populations carrying resistant alleles at different frequencies. Three different scenarios were followed: a continuous selection, a full release of selection, or a repeated introgression with susceptible individuals. The responses of each population to these selection regimes were measured across five generations by bioassays and by monitoring the frequency of knockdown resistance (kdr) mutations and the transcription levels and copy number variations of key detoxification enzymes. RESULTS Knockdown resistance mutations, overexpression and copy number variations of detoxification enzymes as a mechanism of metabolic resistance to deltamethrin was found and maintained under selection across generations. On comparison, the release of insecticide pressure for five generations did not affect resistance levels and resistance marker frequencies. However, introgressing susceptible alleles drastically reduced deltamethrin resistance in only three generations. CONCLUSION The present study confirmed that strategies consisting to stop deltamethrin spraying are likely to fail when the frequencies of resistant alleles are too high and the fitness cost associated to resistance is low. In dead-end situations like in French Guiana where alternative insecticides are not available, alternative control strategies may provide a high benefit for vector control, particularly if they favor the introgression of susceptible alleles in natural populations. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Julien Cattel
- Laboratoire d'Ecologie Alpine (LECA), UMR 5553 CNRS - Université Grenoble-Alpes, Grenoble, France
- Symbiosis Technologies for Insect Control (SymbioTIC), Plateforme de Recherche Cyroi, Sainte-Clotilde, La Réunion
| | - Marine Minier
- Institut Pasteur de Nouvelle-Calédonie (IPNC), Nouméa, Nouvelle-Calédonie
| | - Nausicaa Habchi-Hanriot
- Vectopôle Amazonien Emile Abonnenc, Institut Pasteur de la Guyane, Cayenne, French Guiana
- ARS La Réunion, Sainte-Clotilde, La Réunion
| | - Morgane Pol
- Institut Pasteur de Nouvelle-Calédonie (IPNC), Nouméa, Nouvelle-Calédonie
| | - Frederic Faucon
- Laboratoire d'Ecologie Alpine (LECA), UMR 5553 CNRS - Université Grenoble-Alpes, Grenoble, France
| | - Thierry Gaude
- Laboratoire d'Ecologie Alpine (LECA), UMR 5553 CNRS - Université Grenoble-Alpes, Grenoble, France
| | - Pascal Gaborit
- Vectopôle Amazonien Emile Abonnenc, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Jean Issaly
- Vectopôle Amazonien Emile Abonnenc, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Emma Ferrero
- Vectopôle Amazonien Emile Abonnenc, Institut Pasteur de la Guyane, Cayenne, French Guiana
- Ynsect, Damparis, France
| | - Fabrice Chandre
- MIVEGEC, UMR IRD 224-CNRS 5290, Université de Montpellier, Montpellier, France
| | - Nicolas Pocquet
- Institut Pasteur de Nouvelle-Calédonie (IPNC), Nouméa, Nouvelle-Calédonie
| | - Jean-Philippe David
- Laboratoire d'Ecologie Alpine (LECA), UMR 5553 CNRS - Université Grenoble-Alpes, Grenoble, France
| | - Isabelle Dusfour
- MIVEGEC, UMR IRD 224-CNRS 5290, Université de Montpellier, Montpellier, France
- Département de Santé Globale, Institut Pasteur, Paris, France
- MIVEGEC, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
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24
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Deboscker F, Nacher M, Adenis A, Huber F, Lucarelli A, Asensio L, Daniel M, Schiemsky V, Bonifay T. Sexual and reproductive health of incarcerated women in French Guiana: a qualitative approach. Int J Prison Health 2021; 18:371-383. [PMID: 34784119 DOI: 10.1108/ijph-05-2021-0039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Indexed: 11/17/2022]
Abstract
PURPOSE Incarcerated women are a vulnerable population in terms of sexual and reproductive health. In French Guiana, most incarcerated women come from unsafe environments and are incarcerated because of drug trafficking. Medical follow-up processes used in prison (medical assessment on arrival, and then two half-days per week upon request but without an obstetrician-gynecologist) does not allow for a thorough assessment of the impact of incarceration on women prisoners' health to take place. In the absence of data, the purpose of this study was to describe incarcerated women's experiences in relation to sexual and reproductive health. DESIGN/METHODOLOGY/APPROACH Semi-structured interviews were conducted among French-speaking adult women who had been incarcerated for at least four months in a French Guianan prison. Menstruation, contraception, pregnancy, abortion, sexually transmitted infections and sexuality were described by means of interpretative phenomenological analysis. FINDINGS A total of 14 women were interviewed. They suffered from menstrual cycle disorders, poor hygiene and menstrual insecurity. They appeared to have emotionally disinvested sexuality. However, intra-prison sexual activity existed for some (masturbation, conjugal prison visits, homosexual intercourse between fellow prisoners). Homosexual relations were a source of discrimination. Being pregnant while incarcerated was viewed negatively. A lack of knowledge about sexual and reproductive health and high-risk behaviors such as piercing and tattooing practices were widespread. ORIGINALITY/VALUE Incarceration is a vulnerable time for women's sexual and reproductive health. Sexual activity exposes women to risks and discrimination that should be taken into account in a multidisciplinary approach adapted to the prison environment.
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Affiliation(s)
- Flore Deboscker
- Flore Deboscker is based at the UCSA, Centre Hospitalier de Cayenne, Cayenne, French Guiana and DUMG, Université Antilles-Guyane, Pointe-à-Pitre, Guadeloupe
| | - Mathieu Nacher
- CIC, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Antoine Adenis
- CIC, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | | | - Aude Lucarelli
- HDJ, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Laura Asensio
- UFPI, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Marie Daniel
- UCSA, Centre Hospitalier de Cayenne, Cayenne, French Guiana
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Maurice L, Barraza F, Blondet I, Ho-A-Chuck M, Tablon J, Brousse P, Demar M, Schreck E. Childhood lead exposure of Amerindian communities in French Guiana: an isotopic approach to tracing sources. Environ Geochem Health 2021; 43:4741-4757. [PMID: 33974199 DOI: 10.1007/s10653-021-00944-9] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 04/16/2021] [Indexed: 06/12/2023]
Abstract
In French Guiana were detected high lead (Pb) levels in blood of Amerindian people. Lead exposure is a serious hazard that can affect the cognitive and behavior development. People can be exposed to Pb through occupational and environmental sources. Fingerprinting based on stable Pb isotopes in environmental media is often used to trace natural and anthropogenic sources but is rarely paired with blood data. The objective of this study was to determine the main factors associated with high Blood Lead Levels (BLL). Soil, manioc tubers, food bowls, beverages, wild games, lead pellets and children blood were sampled in small villages along the Oyapock River. children BLL ranged between 5.7 and 35 µg dL-1, all exceeding 5 µg dL-1, the reference value proposed in epidemiologic studies for lead poisoning. Among the different dietary sources, manioc tubers and large game contained elevated Pb concentrations while manioc-based dishes were diluted. The isotopes ratios (207Pb/206Pb and 208Pb/206Pb) of children blood overlapped these of lead shots and meals. These first results confirm for the first time, the diary consumption of manioc-based food as the main contributor to Amerindian children's BLL in French Guiana, but don't exclude the occasional exposure to lead bullets by hunting activities. This is a specific health concern, since previous studies have shown that these same villagers present high levels of mercury (Hg). These communities are indeed subject to a double exposure to neurotoxic metals, Hg and Pb, both through their diet. The farming activity is based on manioc growing, and explaining that this ancestral practice can induce serious health risks for the child's development may seriously affect their food balance and cultural cohesion.
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Affiliation(s)
- Laurence Maurice
- Geosciences Environnement Toulouse (GET), Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, 31400, Toulouse, IRD, France.
- Universidad Andina Simón Bolívar, Área de Salud, P.O. Box 17-12-569, N22-80, Quito, Ecuador.
| | - Fiorella Barraza
- Geosciences Environnement Toulouse (GET), Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, 31400, Toulouse, IRD, France
- Department of Renewable Resources, University of Alberta, Edmonton, AB, T6G 2H1, Canada
- Instituto de Cultivos Tropicales (ICT), Tarapoto, Peru
| | - Isalyne Blondet
- Geosciences Environnement Toulouse (GET), Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, 31400, Toulouse, IRD, France
| | | | - Jessy Tablon
- Agence Régionale de Santé (ARS), 97336, Cayenne, French Guiana
| | - Paul Brousse
- Centre Hospitalier Andrée Rosemon (CHAR), Av. des Flamboyants, 97306, Cayenne, French Guiana
| | - Magalie Demar
- Centre Hospitalier Andrée Rosemon (CHAR), Av. des Flamboyants, 97306, Cayenne, French Guiana
| | - Eva Schreck
- Geosciences Environnement Toulouse (GET), Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, 31400, Toulouse, IRD, France
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Laffont L, Menges J, Goix S, Gentès S, Maury-Brachet R, Sonke JE, Legeay A, Gonzalez P, Rinaldo R, Maurice L. Hg concentrations and stable isotope variations in tropical fish species of a gold-mining-impacted watershed in French Guiana. Environ Sci Pollut Res Int 2021; 28:60609-60621. [PMID: 34159470 DOI: 10.1007/s11356-021-14858-7] [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] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
The aim of the study was to determine if gold-mining activities could impact the mercury (Hg) concentrations and isotopic signatures in freshwater fish consumed by riparian people in French Guiana. Total Hg, MeHg concentrations, and Hg stable isotopes ratios were analyzed in fish muscles from different species belonging to three feeding patterns (herbivorous, periphytophagous, and piscivorous). We compared tributaries impacted by gold-mining activities (Camopi, CR) with a pristine area upstream (Trois-Sauts, TS), along the Oyapock River. We measured δ15N and δ 13C to examine whether Hg patterns are due to differences in trophic level. Differences in δ 15N and δ 13C values between both studied sites were only observed for periphytophagous fish, due to difference of CN baselines, with enriched values at TS. Total Hg concentrations and Hg stable isotope signatures showed that Hg accumulated in fish from both areas has undergone different biogeochemical processes. Δ199Hg variation in fish (-0.5 to 0.2‰) was higher than the ecosystem baseline defined by a Δ199Hg of -0.66‰ in sediments, and suggested limited aqueous photochemical MeHg degradation. Photochemistry-corrected δ202Hg in fish was 0.7‰ higher than the baseline, consistent with biophysical and chemical isotope fractionation in the aquatic environment. While THg concentrations in periphytophagous fish were higher in the gold-mining area, disturbed by inputs of suspended particles, than in TS, the ensemble of Hg isotope shifts in fish is affected by the difference of biotic (methylation/demethylation) and abiotic (photochemistry) processes between both areas and did therefore not allow to resolve the contribution of gold-mining-related liquid Hg(0) in fish tissues. Mercury isotopes of MeHg in fish and lower trophic level organisms can be complementary to light stable isotope tracers.
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Affiliation(s)
- Laure Laffont
- Geosciences Environnement Toulouse, CNRS/IRD/CNES/Université Toulouse III, 14 avenue Edouard Belin, 31400, Toulouse, France.
| | - Johanna Menges
- Section 4.6, Geomorphology, GFZ-German Research Centre for Geosciences, 14473, Potsdam, Germany
| | - Sylvaine Goix
- Geosciences Environnement Toulouse, CNRS/IRD/CNES/Université Toulouse III, 14 avenue Edouard Belin, 31400, Toulouse, France
- University Toulouse III, 14 avenue Edouard Belin, 31400, Toulouse, France
| | - Sophie Gentès
- EPOC, EPHE, Univ. Bordeaux, CNRS, 33120, Arcachon, France
| | | | - Jeroen E Sonke
- Geosciences Environnement Toulouse, CNRS/IRD/CNES/Université Toulouse III, 14 avenue Edouard Belin, 31400, Toulouse, France
| | - Alexia Legeay
- EPOC, EPHE, Univ. Bordeaux, CNRS, 33120, Arcachon, France
| | | | - Raphaëlle Rinaldo
- Parc Amazonien de Guyane, 1 rue Lederson, 97354, Remire-Montjoly, France
| | - Laurence Maurice
- Geosciences Environnement Toulouse, CNRS/IRD/CNES/Université Toulouse III, 14 avenue Edouard Belin, 31400, Toulouse, France.
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Autrive É, Eliot E. [Health and social services for vulnerable populations in the Cayenne area, French Guiana]. Sante Publique 2021; Vol. 33:399-405. [PMID: 35485088 DOI: 10.3917/spub.213.0399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
INTRODUCTION The Communauté d'Agglomération Centre Littoral (CACL) in French Guiana is characterized by a high concentration of health and social services, especially in the Cayenne Island. In addition, 42% of this area is covered by illegal constructions where vulnerable populations live, especially in the most deteriorated parts. OBJECTIVE This article aims at better understanding the organization of the social and health care system for vulnerable populations within this area. METHOD The study was carried out between 2017 and 2019 among actors of the social and health system. Based on 22 semi-structure interviews, it explores organization of these actors by using network analysis (graph theory - centrality scores). RESULTS The results show that the system of actors is hierarchically organized and some of them have different roles as redistributing of capturing populations in the network. These results may help to identify specific trajectories in health care access.
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Nacher M, Mergeay-Fabre M, Blanchet D, Benois O, Pozl T, Mesphoule P, Sainte-Rose V, Vialette V, Toulet B, Moua A, Saout M, Simon S, Guidarelli M, Galindo M, Biche B, Faurous W, Chaizemartin L, Fahrasmane A, Rochemont D, Diop F, Niang M, Pujo J, Vignier N, Dotou D, Vabret A, Demar M. Diagnostic accuracy and acceptability of molecular diagnosis of COVID-19 on saliva samples relative to nasopharyngeal swabs in tropical hospital and extra-hospital contexts: The COVISAL study. PLoS One 2021; 16:e0257169. [PMID: 34516569 PMCID: PMC8437265 DOI: 10.1371/journal.pone.0257169] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/24/2021] [Indexed: 12/23/2022] Open
Abstract
A prospective study was conducted among different intra and extra-hospital populations of French Guiana to evaluate the performance of saliva testing compared to nasopharyngeal swabs. Persons aged 3 years and older with mild symptoms suggestive of COVID-19 and asymptomatic persons with a testing indication were prospectively enrolled. Nasopharyngeal and salivary samples were stored at 4°C before analysis. Both samples were analyzed with the same Real-time PCR amplification of E gene, N gene, and RdRp gene. Between July 22th and October 28th, 1159 persons were included, of which 1028 were analyzed. When only considering as positives those with 2 target genes with Ct values <35, the sensitivity of RT-PCR on saliva samples was 100% relative to nasopharyngeal samples. Specificity positive and negative predictive values were above 90%. Across a variety of cultures and socioeconomic conditions, saliva tests were generally much preferred to nasopharyngeal tests and persons seemed largely confident that they could self-sample. For positive patients defined as those with the amplification of 2 specific target genes with Ct values below 35, the sensitivity and specificity of RT-PCR on saliva samples was similar to nasopharyngeal samples despite the broad range of challenging circumstances in a tropical environment.
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Affiliation(s)
- Mathieu Nacher
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
- DFR Santé, Université de Guyane, Cayenne, French Guiana
- * E-mail:
| | - Mayka Mergeay-Fabre
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Denis Blanchet
- Laboratoire, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Orelie Benois
- Centre de Ressources Biologiques (CRB) Amazonie, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Tristan Pozl
- Centre de Ressources Biologiques (CRB) Amazonie, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Pauline Mesphoule
- Centre de Ressources Biologiques (CRB) Amazonie, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Vincent Sainte-Rose
- Laboratoire, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Véronique Vialette
- Laboratoire, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Bruno Toulet
- Laboratoire, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Aurélie Moua
- Laboratoire, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Mona Saout
- Unité mixte de recherche TBIP, Université de Guyane, Cayenne, French Guiana
| | - Stéphane Simon
- Laboratoire, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Manon Guidarelli
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Muriel Galindo
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Barbara Biche
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - William Faurous
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Laurie Chaizemartin
- Centre délocalisé de prévention et soins de Maripasoula, Maripasoula, French Guiana
| | - Aniza Fahrasmane
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Devi Rochemont
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Fode Diop
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Moussa Niang
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Jean Pujo
- Service des Urgences, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Nicolas Vignier
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Dominique Dotou
- Service de Gynécologie Obstétrique, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | | | - Magalie Demar
- Laboratoire, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
- Unité mixte de recherche TBIP, Université de Guyane, Cayenne, French Guiana
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Fischer C, Pontier D, Filippi-Codaccioni O, Pons JB, Postigo-Hidalgo I, Duhayer J, Brünink S, Drexler JF. Venezuelan Equine Encephalitis Complex Alphavirus in Bats, French Guiana. Emerg Infect Dis 2021; 27. [PMID: 33756099 PMCID: PMC8007291 DOI: 10.3201/eid2704.202676] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Although essential for control strategies, knowledge about transmission cycles is limited for Venezuelan equine encephalitis complex alphaviruses (VEEVs). After testing 1,398 bats from French Guiana for alphaviruses, we identified and isolated a new strain of the encephalitogenic VEEV species Tonate virus (TONV). Bats may contribute to TONV spread in Latin America.
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Rivera-Ingraham GA, Andrade M, Vigouroux R, Solé M, Brokordt K, Lignot JH, Freitas R. Are we neglecting earth while conquering space? Effects of aluminized solid rocket fuel combustion on the physiology of a tropical freshwater invertebrate. Chemosphere 2021; 268:128820. [PMID: 33199112 DOI: 10.1016/j.chemosphere.2020.128820] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 10/01/2020] [Accepted: 10/28/2020] [Indexed: 06/11/2023]
Abstract
Space launchers often use aluminized-solid fuel ("propergol") as propellant and its combustion releases tons of Al2O3 and HCl that sink in terrestrial and aquatic environments, polluting and decreasing water pH. We studied the impact of these events on the biochemical/physiological performance of the freshwater shrimp Macrobrachium jelskii, with wild specimens collected from a non-impacted site in French Guiana. In the laboratory, shrimps were exposed for one week to: i) undisturbed conditions; ii) Al2O3 exposure (0.5 mg L-1) at normal pH (6.6); iii) decreased pH (4.5) (mimicking HCl release in the environment) with no Al2O3; or iv) Al2O3 0.5 mg L-1 and pH 4.5, representing the average conditions found in the water bodies around the Ariane 5 launch pad. Results showed that shrimps bioaccumulated aluminium (Al) regardless of water pH. The combined effect of Al2O3 and low pH caused the most impact: acetylcholinesterase and carboxylesterase activities decreased, indicating neurotoxicity and reduced detoxification capacity, respectively. Animal respiration was enhanced with Al2O3 and pH variations alone, but the synergic interaction of both stressors caused respiration to decrease, suggesting metabolic depression. Oxidative damage followed a similar pattern to respiration rates across conditions, suggesting free radical-mediation in Al toxicity. Antioxidant activities varied among enzymes, with glutathione reductase being the most impacted by Al2O3 exposure. This study shows the importance of addressing space ports' impact on the environment, setting the bases for selecting the most appropriate biomarkers for future monitoring programs using a widespread and sensitive crustacean in the context of an increasing space-oriented activity across the world.
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Affiliation(s)
- Georgina A Rivera-Ingraham
- Laboratoire Environnement de Petit Saut. Hydreco Guyane, Kourou, French Guiana; Laboratorio de Fisiología y Genética Marina (FIGEMA), Departamento de Acuicultura, Facultad de Ciencias Del Mar, Universidad Católica Del Norte, Coquimbo, Chile.
| | - Madalena Andrade
- Departmento de Biologia & CESAM, Universidade de Aveiro, Aveiro, Portugal
| | - Regis Vigouroux
- Laboratoire Environnement de Petit Saut. Hydreco Guyane, Kourou, French Guiana
| | - Montserrat Solé
- Instituto de Ciencias Del Mar, Consejo Superior de Investigaciones Científicas (ICM-CSIC), Barcelona, Spain
| | - Katherina Brokordt
- Laboratorio de Fisiología y Genética Marina (FIGEMA), Departamento de Acuicultura, Facultad de Ciencias Del Mar, Universidad Católica Del Norte, Coquimbo, Chile; Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Coquimbo, Chile
| | - Jehan-Hervé Lignot
- UMR 9190-MARBEC. Université de Montpellier, CNRS, IRD, Ifremer, Montpellier, France
| | - Rosa Freitas
- Departmento de Biologia & CESAM, Universidade de Aveiro, Aveiro, Portugal
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Odonne G, Tareau MA, van Andel T. Geopolitics of bitterness: Deciphering the history and cultural biogeography of Quassia amara L. J Ethnopharmacol 2021; 267:113546. [PMID: 33181284 DOI: 10.1016/j.jep.2020.113546] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Quassia amara L. recently came into the spotlight in French Guiana, when it became the object of a biopiracy claim. Due to the numerous use records throughout the Guiana shield, at least since the 18th century, a thorough investigation of its origin seemed relevant and timely. In the light of the Convention on Biological Diversity (CBD) and the Nagoya protocol, questions about the origin of local knowledge are important to debate. AIM OF THE STUDY Defining cultural biogeography as the dynamics through space and time of biocultural complexes, we used this theoretical framework to shed light on the complex biogeographical and cultural history of Q. amara. We explored in particular the possible transfer of medicinal knowledge on an Old World species to a botanically related New World one by enslaved Africans in Suriname. MATERIALS AND METHODS Historical and contemporary literature research was performed by means of digitized manuscripts, archives and databases from the 17th to the 21st century. We retrieved data from digitized herbarium vouchers in herbaria of the Botanic Garden Meise (Belgium); Naturalis Biodiversity Center (the Netherlands); Missouri Botanical Garden, the Smithsonian National Museum of Natural History, the Field Museum (USA); Royal Botanic Gardens Kew (UK); the IRD Herbarium, French Guiana and the Museum National d'Histoire Naturelle (France). Vernacular names were retrieved from literature and herbarium specimens and compared to verify the origin of Quassia amara and its uses. RESULTS Our exploration of digitized herbarium vouchers resulted in 1287 records, of which 661 were Q. amara and 636 were Q. africana. We observed that the destiny of this species, over at least 300 years, interweaves politics, economy, culture and medicine in a very complex way. Quassia amara's uses are difficult to attribute to specific cultural groups: the species is widely distributed in Central and South America, where it is popular among many ethnic groups. The species spread from Central to South America during the early 18th century due to political and economic reasons. This migration possibly resulted from simultaneous migration by religious orders (Jesuits) from Central America to northern South America and by Carib-speaking Amerindians (from northern South America to Suriname). Subsequently, through colonial trade networks, Q. amara spread to the rest of the world. The absence of African-derived local names in the Guiana shield suggests that Q. africana was not sufficiently familiar to enslaved Africans in the region that they preserved its names and transferred the associated medicinal knowledge to Q. amara. CONCLUSIONS Cultural biogeography has proven an interesting concept to reconstruct the dynamics of biocultural interactions through space and time, while herbarium databases have shown to be useful to decipher evolution of local plant knowledge. Tracing the origin of a knowledge is nevertheless a complex adventure that deserves time and interdisciplinary studies.
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Affiliation(s)
- Guillaume Odonne
- LEEISA (Laboratoire Ecologie, Evolution, Interactions des Systèmes Amazoniens), CNRS, Université de Guyane, IFREMER, 97300, Cayenne, French Guiana.
| | - Marc-Alexandre Tareau
- LEEISA (Laboratoire Ecologie, Evolution, Interactions des Systèmes Amazoniens), CNRS, Université de Guyane, IFREMER, 97300, Cayenne, French Guiana
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Nacher M, Valdes A, Adenis A, Blaizot R, Abboud P, Demar M, Djossou F, Epelboin L, Misslin C, Ntab B, Louvel D, Drak Alsibai K, Couppié P. Gastrointestinal disseminated histoplasmosis in HIV-infected patients: A descriptive and comparative study. PLoS Negl Trop Dis 2021; 15:e0009050. [PMID: 33481806 PMCID: PMC7857560 DOI: 10.1371/journal.pntd.0009050] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 02/03/2021] [Accepted: 12/08/2020] [Indexed: 12/13/2022] Open
Abstract
Disseminated histoplasmosis is one the main AIDS-defining opportunistic infections in HIV-infected patients, notably in Latin America. The non-specific and proteiform clinical presentation leads to diagnostic delays that may lead to fatal outcomes. This retrospective multicentric study aimed to describe the frequency and manifestations of gastrointestinal histoplasmosis in French Guiana, and to compare patients with disseminated histoplasmosis with or without gastrointestinal involvement. Between January 1, 1981 and October 1, 2014 co-infections with HIV and histoplasmosis were enrolled. Inclusion criteria were: age >18 years, confirmed HIV infection; first proven episode of histoplasmosis. Among 349 cases of disseminated histoplasmosis, 245 (70%) had a gastrointestinal presentation. Half of patients with gastrointestinal signs had abdominal pain or diarrhea, mostly watery. Half of patients with abdominal pain had diarrhea (63/124) and half of those with diarrhea (63/123) had abdominal pain. A significant proportion of patients also had hepatomegaly and, to a lesser degree, splenomegaly. After adjusting for potential confounding, the presence of lymphadenopathies >2cm (AOR = 0.2, IC95 = 0.04–0.7, P = 0.01), Haitian origin (AOR = 0.04, IC95 = 0.004–0.4, P = 0.006) were associated with a lower prevalence of gastrointestinal signs and positive gastrointestinal presence of H. capsulatum. Persons with a gastrointestinal H. capsulatum were more likely to have a decreased prothrombin time, lower ferritin, lower liver enzymes, and lower concentrations of LDH than those without gastrointestinal signs and symptoms. They also had a shorter interval between symptoms onset and diagnosis. Patients with a positive gastrointestinal identification of H. capsulatum were less likely to die at 1 month than those without a gastrointestinal presentation (respectively, 4.6% vs 18.5%, P = 0.01). Subacute or chronic gastrointestinal presentations are very frequent during disseminated histoplasmosis, they seem less severe, and should lead to suspect the diagnosis in endemic areas. There were populational or geographic differences in the frequency of gastrointestinal manifestations that could not be explained. This retrospective multicentric study aimed to describe the frequency and manifestations of gastrointestinal histoplasmosis in French Guiana, and to compare patients with disseminated histoplasmosis with or without gastrointestinal involvement. Between January 1, 1981 and October 1, 2014 co-infections with HIV and histoplasmosis were enrolled. Inclusion criteria were: age >18 years, confirmed HIV infection; first proven episode of histoplasmosis. Among 349 cases of disseminated histoplasmosis, 245 (70%) had a gastrointestinal presentation. Half of patients with gastrointestinal signs had abdominal pain or diarrhea, mostly watery. Half of patients with abdominal pain had diarrhea (63/124) and half of those with diarrhea (63/123) had abdominal pain. A significant proportion of patients also had hepatomegaly and, to a lesser degree, splenomegaly. After adjusting for potential confounding, the presence of lymphadenopathies >2cm, Haitian origin were associated with a lower prevalence of gastrointestinal signs and presence of H. capsulatum. Persons with a gastrointestinal presentation were more likely to have a decreased prothrombin time, lower liver enzyme concentration, ferritin, and lower concentrations of LDH than those without gastrointestinal signs and symptoms. The delay between symptom’s onset and diagnosis was also shorter and the proportion of deaths at 1 month was significantly lower among those with gastrointestinal presence of H. capsulatum. Subacute or chronic gastrointestinal presentations are very frequent during disseminated histoplasmosis, they seem less severe, and should lead to suspect the diagnosis in endemic areas.
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Affiliation(s)
- Mathieu Nacher
- CIC INSERM 1424, Centre hospitalier Andree Rosemon Cayenne, Cayenne, French Guiana
- DFR Santé, Université de Guyane, Cayenne, Cayenne, French Guiana
- * E-mail:
| | - Audrey Valdes
- Equipe Opérationnelle d’hygiène hospitalière, Centre hospitalier Andree Rosemon Cayenne, Cayenne, French Guiana
| | - Antoine Adenis
- CIC INSERM 1424, Centre hospitalier Andree Rosemon Cayenne, Cayenne, French Guiana
- DFR Santé, Université de Guyane, Cayenne, Cayenne, French Guiana
| | - Romain Blaizot
- DFR Santé, Université de Guyane, Cayenne, Cayenne, French Guiana
- Department of dermatology, Centre hospitalier Andree Rosemon Cayenne, Cayenne, French Guiana
| | - Philippe Abboud
- Service des Maladies Infectieuses et Tropicales, Centre hospitalier Andree Rosemon Cayenne, Cayenne, French Guiana
| | - Magalie Demar
- Laboratory, Centre hospitalier Andree Rosemon Cayenne, Cayenne, French Guiana
- UMR Tropical Biome and Immunopathology, Université de Guyane, Cayenne, French Guiana
| | - Félix Djossou
- Service des Maladies Infectieuses et Tropicales, Centre hospitalier Andree Rosemon Cayenne, Cayenne, French Guiana
| | - Loïc Epelboin
- Service des Maladies Infectieuses et Tropicales, Centre hospitalier Andree Rosemon Cayenne, Cayenne, French Guiana
| | - Caroline Misslin
- Service de Médecine, Centre hospitalier de l’Ouest Guyanais, Saint Laurent du Maroni, French Guiana
| | - Balthazar Ntab
- Département d’Information Médicale, Centre hospitalier de l’Ouest Guyanais, Saint Laurent du Maroni, French Guiana
| | - Dominique Louvel
- Service de Médecine B, Gastroentérologie, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Kinan Drak Alsibai
- Service d’Anatomopathologie, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Pierre Couppié
- DFR Santé, Université de Guyane, Cayenne, Cayenne, French Guiana
- Department of dermatology, Centre hospitalier Andree Rosemon Cayenne, Cayenne, French Guiana
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Talaga S, Duchemin JB, Girod R, Dusfour I. The Culex Mosquitoes (Diptera: Culicidae) of French Guiana: A Comprehensive Review With the Description of Three New Species. J Med Entomol 2021; 58:182-221. [PMID: 33269802 DOI: 10.1093/jme/tjaa205] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Indexed: 06/12/2023]
Abstract
The taxonomically intricate genus Culex Linnaeus includes numerous known vector species of parasites and viruses to humans. The aim of this article is to comprehensively review the Culex species which occur in French Guiana to provide a stronger taxonomic foundation for future studies on this genus in South America. The occurrence of Culex species was investigated in light of current taxonomic knowledge through an extensive examination of voucher specimens deposited in the entomological collections of four French depositories and additional specimens recently collected at various localities in French Guiana. Based on this review, 104 Culex species classified in eight subgenera are confirmed to occur in French Guiana. Compared to the most recent checklist, 18 species are added, and 10 species excluded, resulting in a total number of 242 valid mosquito species known to occur in French Guiana. Three nominal species are synonymized, three others are newly described, and a last one is transferred to another informal infrasubgeneric group. Overall, this review also highlights the limits of the use of only bibliographic data when dealing with taxonomically complex groups of insects.
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Affiliation(s)
- Stanislas Talaga
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana
| | - Jean-Bernard Duchemin
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana
| | - Romain Girod
- Institut Pasteur de Madagascar, Unité d'Entomologie Médicale, Antananarivo, Madagascar
| | - Isabelle Dusfour
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana
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Epelboin Y, Wang L, Giai Gianetto Q, Choumet V, Gaborit P, Issaly J, Guidez A, Douché T, Chaze T, Matondo M, Dusfour I. CYP450 core involvement in multiple resistance strains of Aedes aegypti from French Guiana highlighted by proteomics, molecular and biochemical studies. PLoS One 2021; 16:e0243992. [PMID: 33428654 PMCID: PMC7799788 DOI: 10.1371/journal.pone.0243992] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 12/02/2020] [Indexed: 12/21/2022] Open
Abstract
Insecticide resistance is a worldwide threat for vector control around the world, and Aedes aegypti, the main vector of several arboviruses, is a particular concern. To better understand the mechanisms of resistance, four isofemale strains originally from French Guiana were isolated and analysed using combined approaches. The activity of detoxification enzymes involved in insecticide resistance was assayed, and mutations located at positions 1016 and 1534 of the sodium voltage-gated channel gene, which have been associated with pyrethroid resistance in Aedes aegypti populations in Latin America, were monitored. Resistance to other insecticide families (organophosphates and carbamates) was evaluated. A large-scale proteomic analysis was performed to identify proteins involved in insecticide resistance. Our results revealed a metabolic resistance and resistance associated with a mutation of the sodium voltage-gated channel gene at position 1016. Metabolic resistance was mediated through an increase of esterase activity in most strains but also through the shifts in the abundance of several cytochrome P450 (CYP450s). Overall, resistance to deltamethrin was linked in the isofemale strains to resistance to other class of insecticides, suggesting that cross- and multiple resistance occur through selection of mechanisms of metabolic resistance. These results give some insights into resistance to deltamethrin and into multiple resistance phenomena in populations of Ae. aegypti.
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Affiliation(s)
- Yanouk Epelboin
- Unité d’Entomologie Médicale, Institut Pasteur de la Guyane, Cayenne, French Guiana, France
| | - Lanjiao Wang
- Unité d’Entomologie Médicale, Institut Pasteur de la Guyane, Cayenne, French Guiana, France
| | - Quentin Giai Gianetto
- Proteomics Platform, Mass Spectrometry for Biology Unit, USR CNRS 2000, Institut Pasteur, Paris, France
- Bioinformatics and Biostatistics HUB, Computational Biology Department, USR CNRS 3756, Institut Pasteur, Paris, France
| | - Valérie Choumet
- Environment and Infectious risks Unit, Institut Pasteur, Paris, France
| | - Pascal Gaborit
- Unité d’Entomologie Médicale, Institut Pasteur de la Guyane, Cayenne, French Guiana, France
| | - Jean Issaly
- Unité d’Entomologie Médicale, Institut Pasteur de la Guyane, Cayenne, French Guiana, France
| | - Amandine Guidez
- Unité d’Entomologie Médicale, Institut Pasteur de la Guyane, Cayenne, French Guiana, France
| | - Thibaut Douché
- Proteomics Platform, Mass Spectrometry for Biology Unit, USR CNRS 2000, Institut Pasteur, Paris, France
| | - Thibault Chaze
- Proteomics Platform, Mass Spectrometry for Biology Unit, USR CNRS 2000, Institut Pasteur, Paris, France
| | - Mariette Matondo
- Proteomics Platform, Mass Spectrometry for Biology Unit, USR CNRS 2000, Institut Pasteur, Paris, France
| | - Isabelle Dusfour
- Unité d’Entomologie Médicale, Institut Pasteur de la Guyane, Cayenne, French Guiana, France
- Global Health department, Institut Pasteur, Paris, France
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Lemaire J, Bustamante P, Marquis O, Caut S, Brischoux F. Influence of sex, size and trophic level on blood Hg concentrations in Black caiman, Melanosuchus niger (Spix, 1825) in French Guiana. Chemosphere 2021; 262:127819. [PMID: 32768753 DOI: 10.1016/j.chemosphere.2020.127819] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/20/2020] [Accepted: 07/23/2020] [Indexed: 06/11/2023]
Abstract
Mercury (Hg) is a contaminant that is impacting ecosystems worldwide. Its toxicity is threatening wildlife and human populations, leading to the necessity of identifying the most affected ecosystems. Therefore, it is essential to identify pertinent bioindicator organisms to monitor Hg contamination. In this study, we determined the stable carbon (δ13C) and nitrogen (δ15N) isotope ratios in the red blood cells (RBCs), and the total Hg concentration in total blood of 72 Melanosuchus niger in French Guiana. The goals of our study were to assess the level of Hg contamination in total blood of Black caimans and to further investigate the influence of individual traits (i.e., sex, size/age, diet) on Hg concentrations. Mercury concentration in total blood of Black caimans ranged from 0.572 to 3.408 μg g-1 dw (mean ± SD is 1.284 ± 0.672 μg g-1 dw) and was positively correlated to individual body size and trophic position (δ15N). We did not find any sexual or seasonal effects on Hg concentrations in the blood. The use of blood of M. niger is relevant to determine Hg concentrations within the population and suggests that this species can be used as a bioindicator for environmental contamination. In addition, our results emphasize trophic position as a major source of Hg variation and further suggest that it is essential to take trophic position (δ15N) into account for future studies.
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Affiliation(s)
- Jérémy Lemaire
- Centre D'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS-La Rochelle Université, 79360, Villiers en Bois, France; Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 Rue Olympe de Gouges, 17000, La Rochelle, France.
| | - Paco Bustamante
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 Rue Olympe de Gouges, 17000, La Rochelle, France; Institut Universitaire de France (IUF), 1 Rue Descartes, 75005, Paris, France
| | - Olivier Marquis
- Parc Zoologique de Paris, Muséum National D'Histoire Naturelle, 53 Avenue de Saint Maurice, 75012, Paris, France
| | - Stéphane Caut
- Consejo Superior de Investigaciones Cientificas (CSIC), Departamento de Etologia y Conservacion de La Biodiversidad - Estacion Biologica de Doñana - C/ Americo Vespucio, S/n (Isla de La Cartuja), E-41092, Sevilla, Spain; ANIMAVEG Conservation, 58 Avenue Du Président Salvador Allende, F-94800, Villejuif, France
| | - François Brischoux
- Centre D'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS-La Rochelle Université, 79360, Villiers en Bois, France
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Dranebois S, Lalanne-Mistrih ML, Nacher M, Thelusme L, Deungoue S, Demar M, Dueymes M, Drak Alsibai K, Sabbah N. Prescription of Physical Activity by General Practitioners in Type 2 Diabetes: Practice and Barriers in French Guiana. Front Endocrinol (Lausanne) 2021; 12:790326. [PMID: 35082754 PMCID: PMC8784518 DOI: 10.3389/fendo.2021.790326] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/29/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND General practitioners (GPs) are the major primary healthcare players in the management of type 2 diabetes. In addition to a well-balanced diet, physical activity (PA) appears as a necessary non-medicinal therapy in the management of diabetic patients. However, GPs emphasize several obstacles to its prescription. The aim of this study is to evaluate the practices, barriers, and factors favoring the prescription of PA in type 2 diabetic patients by GPs in French Guiana. METHOD We conducted a cross-sectional descriptive study using a questionnaire, designed to interview 152 French Guiana GPs and describe their practice in prescribing PA in type 2 diabetic patients. RESULTS Our results revealed that the prescription of PA as a non-medicinal therapeutic choice in the management of type 2 diabetes was practiced by 74% of the French Guiana GPs. However, only 37% of GPs responded that they implemented the recommendations; indeed, only one-third knew about them. The majority of GPs were interested in PA training, but only 11% were actually trained in this practice. The lack of structure adapted to the practice of PA and the lack of awareness of the benefits of PA in metabolic pathology appeared as the main obstacles to PA prescription. CONCLUSION This study highlights the importance of improving the training of GPs in the prescription of PA, the development of adapted PA structures, and collaboration between the different actors within the framework of the sport-health system in type 2 diabetes in French Guiana.
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Affiliation(s)
- Stephanie Dranebois
- Department of General Medicine, Cayenne Hospital Center, Cayenne, French Guiana
| | - Marie Laure Lalanne-Mistrih
- Department of Nutrition (UTDN-CSO), University Hospital of Guadeloupe, Pointe à Pitre, France
- Clinical Investigation Center Antilles, Guadeloupe (INSERM CIC 1424), University Hospital of Guadeloupe, Pointe à Pitre, France
| | - Mathieu Nacher
- Clinical Investigation Center Antilles French Guiana (INSERM CIC 1424) Cayenne Hospital Center, Cayenne, French Guiana
| | - Liliane Thelusme
- Department of Endocrinology and Metabolic Diseases, Cayenne Hospital Center, Cayenne, French Guiana
| | - Sandra Deungoue
- Clinical Investigation Center Antilles French Guiana (INSERM CIC 1424) Cayenne Hospital Center, Cayenne, French Guiana
| | - Magalie Demar
- EA3593, Amazon Ecosystems and Tropical Diseases, University of Guiana, Cayenne, French Guiana
- Department of Biology, Immunology and Parasitology, Cayenne Hospital Center, Cayenne, French Guiana
| | - Maryvonne Dueymes
- EA3593, Amazon Ecosystems and Tropical Diseases, University of Guiana, Cayenne, French Guiana
- Department of Biology, Immunology and Parasitology, Cayenne Hospital Center, Cayenne, French Guiana
| | - Kinan Drak Alsibai
- Center of Biological Resources (CRB Amazonie), Cayenne Hospital Center, Cayenne, French Guiana
- Department of Pathology, Cayenne Hospital Center, Cayenne, French Guiana
| | - Nadia Sabbah
- Clinical Investigation Center Antilles French Guiana (INSERM CIC 1424) Cayenne Hospital Center, Cayenne, French Guiana
- Department of Endocrinology and Metabolic Diseases, Cayenne Hospital Center, Cayenne, French Guiana
- EA3593, Amazon Ecosystems and Tropical Diseases, University of Guiana, Cayenne, French Guiana
- *Correspondence: Nadia Sabbah,
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Hery L, Guidez A, Durand AA, Delannay C, Normandeau-Guimond J, Reynaud Y, Issaly J, Goindin D, Legrave G, Gustave J, Raffestin S, Breurec S, Constant P, Dusfour I, Guertin C, Vega-Rúa A. Natural Variation in Physicochemical Profiles and Bacterial Communities Associated with Aedes aegypti Breeding Sites and Larvae on Guadeloupe and French Guiana. Microb Ecol 2021; 81:93-109. [PMID: 32621210 PMCID: PMC7794107 DOI: 10.1007/s00248-020-01544-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 06/15/2020] [Indexed: 05/10/2023]
Abstract
Aedes aegypti develop in aquatic habitats in which mosquito larvae are exposed to physicochemical elements and microorganisms that may influence their life cycle and their ability to transmit arboviruses. Little is known about the natural bacterial communities associated with A. aegypti or their relation to the biotic and abiotic characteristics of their aquatic habitats. We characterized the physicochemical properties and bacterial microbiota of A. aegypti breeding sites and larvae on Guadeloupe and in French Guiana. In addition, we explored whether geographic location, the type of breeding site and physicochemical parameters influenced the microbiota associated with this mosquito species. We used large-scale 16S rRNA gene sequencing of 160 breeding sites and 147 pools of A. aegypti larvae and recorded 12 physicochemical parameters at the sampled breeding sites. Ordination plots and multiple linear regression were used to assess the influence of environmental factors on the bacterial microbiota of water and larvae. We found territory-specific differences in physicochemical properties (dissolved oxygen, conductivity) and the composition of bacterial communities in A. aegypti breeding sites that influenced the relative abundance of several bacteria genera (e.g., Methylobacterium, Roseoccocus) on the corresponding larvae. A significant fraction of the bacterial communities identified on larvae, dominated by Herbiconiux and Microvirga genera, were consistently enriched in mosquitoes regardless the location. In conclusion, territory-specific differences observed in the biotic and abiotic properties of A. aegypti breeding sites raise concern about the impact of these changes on pathogen transmission by different A. aegypti populations.
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Affiliation(s)
- Lyza Hery
- Laboratory of Vector Control Research, Transmission Reservoir and Pathogens Diversity Unit, Institut Pasteur of Guadeloupe, Morne Jolivière, Guadeloupe France
| | - Amandine Guidez
- Vector Control and Adaptation Unit, Cayenne, Institut Pasteur of French Guiana, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana France
| | | | - Christelle Delannay
- Laboratory of Vector Control Research, Transmission Reservoir and Pathogens Diversity Unit, Institut Pasteur of Guadeloupe, Morne Jolivière, Guadeloupe France
| | | | - Yann Reynaud
- Laboratory of Vector Control Research, Transmission Reservoir and Pathogens Diversity Unit, Institut Pasteur of Guadeloupe, Morne Jolivière, Guadeloupe France
| | - Jean Issaly
- Vector Control and Adaptation Unit, Cayenne, Institut Pasteur of French Guiana, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana France
| | - Daniella Goindin
- Laboratory of Vector Control Research, Transmission Reservoir and Pathogens Diversity Unit, Institut Pasteur of Guadeloupe, Morne Jolivière, Guadeloupe France
| | - Grégory Legrave
- Laboratory of Environment and Food Hygiene, Institut Pasteur of Guadeloupe, Morne Jolivière, Guadeloupe France
| | - Joel Gustave
- Regional Health Agency of Guadeloupe, Gourbeyre, Guadeloupe France
| | - Stéphanie Raffestin
- Laboratory of Environment and Hygiene, Institut Pasteur of French Guiana, Cayenne, French Guiana France
| | - Sebastien Breurec
- Transmission, Reservoir and Diversity of Pathogens Unit, Institut Pasteur of Guadeloupe, Pointe-à-Pitre, France
- Hyacinthe Bastaraud Faculty of Medicine, University of Antilles, Pointe-à-Pitre, France
- INSERM Centre for Clinical Investigation 1424, Pointe-à-Pitre, Les Abymes France
| | - Philippe Constant
- INRS-Centre Armand-Frappier Santé Biotechnologie, Laval, Québec Canada
| | - Isabelle Dusfour
- Vector Control and Adaptation Unit, Cayenne, Institut Pasteur of French Guiana, Vectopôle Amazonien Emile Abonnenc, Cayenne, French Guiana France
| | - Claude Guertin
- INRS-Centre Armand-Frappier Santé Biotechnologie, Laval, Québec Canada
| | - Anubis Vega-Rúa
- Laboratory of Vector Control Research, Transmission Reservoir and Pathogens Diversity Unit, Institut Pasteur of Guadeloupe, Morne Jolivière, Guadeloupe France
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Drak Alsibai K, Couppié P, Blanchet D, Adenis A, Epelboin L, Blaizot R, Louvel D, Djossou F, Demar M, Nacher M. Cytological and Histopathological Spectrum of Histoplasmosis: 15 Years of Experience in French Guiana. Front Cell Infect Microbiol 2020; 10:591974. [PMID: 33194840 PMCID: PMC7658294 DOI: 10.3389/fcimb.2020.591974] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 10/07/2020] [Indexed: 12/29/2022] Open
Abstract
Background Disseminated histoplasmosis remains a major killer of immunocompromised patients in Latin America. Cytological and histological methods are usually present in most hospitals and may represent a precious diagnostic method. We report 15 years of experience of the department of pathology of the Centre Hospitalier de Cayenne Andrée Rosemon in French Guiana. Methods Specimens from live patients from January 2005 to June 2020 with the presence of H. capsulatum on cytological and/or histological analysis were analyzed. All specimens were examined by an experienced pathologist. The analysis was descriptive. Results Two hundred two cytological and histological samples were diagnosed with histoplasmosis between January 2005 and June 2020. The 202 samples included 153 (75.7%) histopathological formalin-fixed and paraffin-embedded tissues (biopsy or surgical specimens) and 49 (24.3%) cytological analysis from all organs. One hundred thirty-four patients (82.7%) were HIV-positive, 15 patients (9.3%) had immunosuppressant treatment, and 13 patients (8%) were immunocompetent. Seventy-eight of 202 (38.5%) were samples from the digestive tract, mostly the colon (53/78 cases, 70%) and small intestine (14/78 cases, 18%). Microorganisms were more numerous in digestive samples (notably the colon) than in other organs. Lymphocyte and histiocyte inflammation of moderate to marked intensity were observed in all positive specimens. Tuberculoid epithelioid granuloma were present in 16/78 (20,5%) specimens including 14 colon and 2 small intestine specimens. There were 11/202 cases of liver histoplasmosis, 26/202 (12,8%) cases of pulmonary histoplasmosis. Bone marrow involvement was diagnosed in 14 (2%) specimens (8 aspiration and 6 biopsies). Lymph nodes were positive in 42 specimens (31 histology and 11 cytology). Histopathological analysis of the 31 lymph nodes showed a variable histological appearance. Tuberculoid forms were most frequent (24/31, 77,4%). Conclusions From the pathologist perspective, this is the largest series to date showing that digestive involvement was the most frequent, usually with a tuberculoid form and a greater load of Histoplasma. With awareness and expertise, cytology and pathology are widely available methods that can give life-saving results in a short time to help orient clinicians facing a potentially fatal infection requiring prompt treatment.
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Affiliation(s)
- Kinan Drak Alsibai
- Department of Pathology, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
- Centre of Biological Resource (CRB Amazonie), Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Pierre Couppié
- Department of Dermatology, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
- DFR Santé, Université de Guyane, Cayenne, French Guiana
| | - Denis Blanchet
- Laboratory, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Antoine Adenis
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Loïc Epelboin
- 1 Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Romain Blaizot
- Department of Dermatology, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Dominique Louvel
- Service de Médecine B, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Félix Djossou
- 1 Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
| | - Magalie Demar
- Laboratory, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
- UMR Tropical Biome and Immunopathology, Université de Guyane, Cayenne, French Guiana
| | - Mathieu Nacher
- DFR Santé, Université de Guyane, Cayenne, French Guiana
- CIC INSERM 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne, French Guiana
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Morote S, Nacher M, Blaizot R, Ntab B, Blanchet D, Drak Alsibai K, Demar M, Djossou F, Couppié P, Adenis A. Temporal trends of cutaneo-mucous histoplasmosis in persons living with HIV in French Guiana: Early diagnosis defuses South American strain dermotropism. PLoS Negl Trop Dis 2020; 14:e0008663. [PMID: 33075084 PMCID: PMC7595617 DOI: 10.1371/journal.pntd.0008663] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 10/29/2020] [Accepted: 07/31/2020] [Indexed: 01/17/2023] Open
Abstract
Histoplasmosis is the most frequent opportunistic infection and the first cause of mortality in HIV-infected patients in French Guiana and presumably in much of Latin America. Mucocutaneous lesions of histoplasmosis are considered as rare and late manifestations of the disease. It has been debated whether the greater proportion of cutaneo-mucous presentations in South America relative to the USA was the reflection of Histoplasma strains with increased dermotropism or simply delayed diagnosis and advanced immunosuppression. The objective of this study was to describe the clinical presentation, frequency, prognosis and temporal trends of cutaneomucous histoplasmosis in French Guiana. A retrospective study of patients with AIDS-related disseminated histoplasmosis followed in the three hospitals of French Guiana was performed between 1981 and 2014. Incident cases of histoplasmosis, proved by pathology and/or mycological examinations, were studied. Mucocutaneous histoplasmosis was confirmed by a positive cutaneous or mucosal biopsy. Mucocutaneous lesions were polymorphic. Ninety percent of patients were profoundly immunocompromised patients (CD4<50/mm3) and over 80% were not on antiretroviral treatment. The frequency of mucocutaneous forms and case fatality of disseminated histoplasmosis within one month of antifungal treatment significantly decreased over time (p<0,001). In this South American territory, diagnostic and therapeutic improvements have led to the quasi disappearance of cutaneous manifestations. There may be South American dermotropism in the laboratory but at the bedside early diagnosis seems to be the main parameter explaining the proportion of cutaneomucous presentations in South America relative to the USA. Histoplasmosis is the most frequent opportunistic infection and the first cause of mortality in HIV-infected patients in French Guiana and presumably in much of Latin America. Mucocutaneous lesions of histoplasmosis are considered as rare and late manifestations of the disease. It has been debated whether the greater proportion of cutaneo-mucous presentations in South America relative to the USA was the reflection of Histoplasma strains with increased dermotropism or simply delayed diagnosis and advanced immunosuppression. The objective of this study was to describe the clinical presentation, frequency, prognosis and temporal trends of cutaneomucous histoplasmosis in French Guiana. A retrospective study of patients with AIDS-related disseminated histoplasmosis followed in the three hospitals of French Guiana was performed between 1981 and 2014. Incident cases of histoplasmosis, proved by pathology and/or mycological examinations, were studied. Mucocutaneous histoplasmosis was confirmed by a positive cutaneous or mucosal biopsy. Ninety percent of patients were profoundly immunocompromised patients (CD4<50/mm3) and over 80% were not on antiretroviral treatment. The frequency of mucocutaneous forms and case fatality of disseminated histoplasmosis within one month of antifungal treatment significantly decreased over time. Hence, in this South American territory, diagnostic and therapeutic improvements have led to the quasi-disappearance of cutaneous manifestations. There may be South American dermotropism in the laboratory but at the bedside early diagnosis seems to be the main parameter explaining the proportion of cutaneomucous presentations in South America relative to the USA.
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Affiliation(s)
- Sophie Morote
- Service de Dermatologie-vénéréologie, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Mathieu Nacher
- Centre d'Investigation Clinique Antilles Guyane, INSERM 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- DFR Santé, Université de Guyane, Cayenne, French Guiana
- * E-mail:
| | - Romain Blaizot
- Service de Dermatologie-vénéréologie, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- UMR TBIP, Université de Guyane, Cayenne, French Guiana
| | - Balthazar Ntab
- Département d’Information Médicale, Centre Hospitalier de l’Ouest Guyanais, Saint Laurent du Maroni, French Guiana
| | - Denis Blanchet
- UMR TBIP, Université de Guyane, Cayenne, French Guiana
- Laboratory, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Kinan Drak Alsibai
- Service d’Anatomopathologie, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Magalie Demar
- DFR Santé, Université de Guyane, Cayenne, French Guiana
- UMR TBIP, Université de Guyane, Cayenne, French Guiana
- Laboratory, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Félix Djossou
- DFR Santé, Université de Guyane, Cayenne, French Guiana
- Laboratory, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Pierre Couppié
- Service de Dermatologie-vénéréologie, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- DFR Santé, Université de Guyane, Cayenne, French Guiana
| | - Antoine Adenis
- Centre d'Investigation Clinique Antilles Guyane, INSERM 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
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Clavier J. [ French Guiana: Support for breastfeeding is a public health priority]. Rev Infirm 2020; 69:30-32. [PMID: 33129474 DOI: 10.1016/j.revinf.2020.08.006] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
World Breastfeeding Week is held every year from 1-7 August to promote breastfeeding as a way to make infants around the world healthier. In French Guiana, caregivers work within a network to support this approach with young mothers, as evidenced by a midwife who has worked for several years on site, particularly in remote prevention and health centres and at the Kourou Hospital Centre.
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Affiliation(s)
- Julie Clavier
- c/o La revue de l'infirmière, 65, rue Camille-Desmoulins, 92130 Issy-les-Moulineaux, France.
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Jolivet A, Agostini C, Manca MF, Carod JF, Launay JF, Brunet J, Brignon J, Carles G, Perotti F. [The public health department of the Western French Guiana Hospital: a 5-year return of experience]. Sante Publique 2020; 32:199-210. [PMID: 32989949 DOI: 10.3917/spub.202.0199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
INTRODUCTION The western French Guiana hospital (Chog) is atypical. The creation of a public health department (PSP) is the result of a willingness of the institution to respond to public health issues on its territory. The main objective of this article is to identify the levers and impediments for the development of public health activities within this hospital, after five years of implementation. METHOD This article was based on the analysis of documents produced within the PSP, the institution and at the regional level (2013-2018), and on interviews conducted in 2017 with PSP professionals, and chiefs of other departments of the Chog (N = 16). RESULTS The added value of the PSP is based on the pooling of human resources and technical skills, the coexistence of clinical activities, prevention, research, teaching and international cooperation with Suriname, and the development of multidisciplinary and evaluative approaches. The lack of a set of public health objectives in the establishment project, the lack of place for these activities in its new hospital, and the difficult mobilization of financial resources, however, limit the prospects. CONCLUSION This analysis has shown difficulties in developing public health activities within this hospital, in an overseas territory with nonetheless multiple and complex needs. The authors invite politics and health authorities to value, and develop these activities, conditions necessary for the positioning of the hospital as an actor of the “turn in prevention”.
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Nguyen D, Nacher M, Epelboin L, Melzani A, Demar M, Blanchet D, Blaizot R, Drak Alsibai K, Abboud P, Djossou F, Couppié P, Adenis A. Hemophagocytic Lymphohistiocytosis During HIV Infection in Cayenne Hospital 2012-2015: First Think Histoplasmosis. Front Cell Infect Microbiol 2020; 10:574584. [PMID: 33072627 PMCID: PMC7542182 DOI: 10.3389/fcimb.2020.574584] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Accepted: 08/19/2020] [Indexed: 12/16/2022] Open
Abstract
Introduction: Haemophagocytic Lymphohistiocytosis (HLH), during HIV infection is a rare complication with a poor prognosis. There are few data on HLH within the Amazon region. The objective was to describe epidemiological, clinical and therapeutic features of HIV-related HLH in French Guiana. Methods: A retrospective analysis of adult HIV patients at Cayenne hospital with HLH between 2012 and 2015. A diagnosis of HLH was given if the patient presented at least 3 of 8 criteria of the HLH-2004 classification. Results: Fourteen cases of HLH were tallied during the study period. The mean age was 46 years with a sex ratio of 1.8. The most frequent etiology of HLH was an associated infection (12/14). Confirmed disseminated histoplasmosis, was found in 10 of 14 cases, and it was suspected in 2 other cases. The CD4 count was below 200/mm3 in 13/14 cases. An HIV viral load >100,000 copies/ml was observed in 13/14 cases. An early treatment with liposomal amphotericin B was initiated in 12/14 cases. The outcome was favorable in 12/14 of all cases and in 10/12 cases involving histoplasmosis. Case fatality was 2/14 among all cases (14.3%) et 1/10 among confirmed disseminated histoplasmosis with HLH (10%). During the study period 1 in 5 cases of known HIV-associated disseminated histoplasmosis in French Guiana was HLH. Conclusion: Histoplasmosis was the most frequent etiology associated with HLH in HIV-infected patients in French Guiana. The prognosis of HLH remains severe. However, a probabilistic empirical first line treatment with liposomal amphotericin B seemed to have a favorable impact on patient survival.
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Affiliation(s)
- Duc Nguyen
- Centre d'Investigation Clinique Antilles Guyane, INSERM 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Mathieu Nacher
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- DFR Santé, Université de Guyane, Cayenne, French Guiana
| | - Loic Epelboin
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Alessia Melzani
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Magalie Demar
- DFR Santé, Université de Guyane, Cayenne, French Guiana
- UMR TBIP, Université de Guyane, Cayenne, French Guiana
- Laboratory, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Denis Blanchet
- UMR TBIP, Université de Guyane, Cayenne, French Guiana
- Laboratory, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Romain Blaizot
- Service de Dermatologie-Vénéréologie, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Kinan Drak Alsibai
- Service d'Anatomopathologie, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Philippe Abboud
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Félix Djossou
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- UMR TBIP, Université de Guyane, Cayenne, French Guiana
| | - Pierre Couppié
- DFR Santé, Université de Guyane, Cayenne, French Guiana
- Service de Dermatologie-Vénéréologie, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Antoine Adenis
- Centre d'Investigation Clinique Antilles Guyane, INSERM 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
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Tareau MA, Bonnefond A, Palisse M, Odonne G. Phytotherapies in motion: French Guiana as a case study for cross-cultural ethnobotanical hybridization. J Ethnobiol Ethnomed 2020; 16:54. [PMID: 32938478 PMCID: PMC7493365 DOI: 10.1186/s13002-020-00404-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 08/27/2020] [Indexed: 05/10/2023]
Abstract
BACKGROUND French Guiana is characterized by a very multicultural population, made up of formerly settled groups (Amerindians, Maroons, Creoles) and more recent migrants (mostly from Latin America and the Caribbean). It is the ideal place to try to understand the influence of intercultural exchanges on the composition of medicinal floras and the evolution of phytotherapies under the effect of cross-culturalism. METHODS A combination of qualitative and quantitative methods was used. Semi-directive interviews were conducted in 12 localities of French Guiana's coast between January 2016 and June 2017, and the responses to all closed questions collected during the survey were computerized in an Excel spreadsheet to facilitate quantitative processing. Herbarium vouchers were collected and deposited at the Cayenne Herbarium to determine Linnaean names of medicinal species mentioned by the interviewees. A list of indicator species for each cultural group considered was adapted from community ecology to this ethnobiological context, according to the Dufrêne-Legendre model, via the "labdsv" package and the "indval" function, after performing a redundancy analysis (RDA). RESULTS A total of 205 people, belonging to 15 distinct cultural groups, were interviewed using semi-structured questionnaires. A total of 356 species (for 106 botanical families) were cited. We observed that pantropical and edible species hold a special place in these pharmacopeias. If compared to previous inventories, 31 recently introduced species can be counted. Furthermore, this study shows that the majority of the plants used are not specific to a particular group but shared by many communities. However, despite this obvious cross-culturalism of medicinal plants between the different cultural communities of French Guiana, divergent trends nevertheless appear through the importance of 29 indicator/cultural keystone species in 10 cultural groups. Finally, we have emphasized that the transmission of herbal medicine's knowledge in French Guiana is mainly feminine and intra-cultural. CONCLUSION French Guianese medicinal flora is undoubtedly related to the multiple cultures that settled this territory through the last centuries. Cultural pharmacopeias are more hybrid than sometimes expected, but cultural keystone species nevertheless arise from a common background, allowing to understand, and define, the relationships between cultural groups.
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Affiliation(s)
- M-A Tareau
- LEEISA (Laboratoire Ecologie, Evolution, Interactions des Systèmes Amazoniens), CNRS, Université de Guyane, IFREMER, 97300, Cayenne, French Guiana.
| | | | - M Palisse
- LEEISA (Laboratoire Ecologie, Evolution, Interactions des Systèmes Amazoniens), CNRS, Université de Guyane, IFREMER, 97300, Cayenne, French Guiana
| | - G Odonne
- LEEISA (Laboratoire Ecologie, Evolution, Interactions des Systèmes Amazoniens), CNRS, Université de Guyane, IFREMER, 97300, Cayenne, French Guiana
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Elenga N, Cuadro-Alvarez E, Martin E, Njuieyon F, Defo A, Maniassom C. Influence of beta-cluster haplotypes, alpha-gene status and UGTA1 polymorphism on clinical and hematological data in sickle-cell disease children from French Guiana. PLoS One 2020; 15:e0238691. [PMID: 32881938 PMCID: PMC7470392 DOI: 10.1371/journal.pone.0238691] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 08/21/2020] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES This cross-sectional study aimed to investigate the influence of haplotypes, alpha-gene status and UGTA1 polymorphism on the severity of sickle cell disease in children. METHODS This cross-sectional study was conducted between 2012 and 2014 at the Cayenne Hospital, in French Guiana. Acute clinical complications were grouped into (i) severe SCD defined by the presence of stroke and/or abnormal-transcranial Doppler (TCD), (ii) moderate SCD defined by the presence of at least three annual events requiring hospitalization and/or at least one acute chest syndrome, (iii) no severe SCD (in the absence of the precited events). RESULTS Among the 86 patients, 33.7% were female with a median age of 10 years (range: 6-12 years). The vast majority of patients had SCA (HbSS) phenotype (74.4%; n = 64). The severe haplotype was found in 40% of patients. 30% were BEN/BEN. Analysis of α-globin gene deletions revealed that 32 patients (37.2%) were heterozygous (loss of 2 genes in 2 cases and loss of 1 gene in 30 cases) for α-thalassemia (3.7 kb deletion). Homozygous (TA) n TA7/7 was found in 24 (28%). In the multivariate analysis, the factors associated with the severity of sickle cell disease were the first vaso-occlusive crisis before one year of age (OR 25, [95% CI = 6.0-107.0], p<0.001) and a baseline MCV >80 fL (OR 0.20 [95% CI = 0.04-0.96], p = 0.04). The area of the ROC curve was 0.90. CONCLUSION Prospective studies with greater statistical power would provide more knowledge on the relationship between UGT1A1 mutations and the clinical and hematological manifestations of SCA.
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Affiliation(s)
- Narcisse Elenga
- Pediatric Unit, Cayenne General Hospital, Cayenne, French Guiana
- * E-mail:
| | | | - Elise Martin
- Pediatric Unit, Cayenne General Hospital, Cayenne, French Guiana
| | - Falucar Njuieyon
- Pediatric Unit, Cayenne General Hospital, Cayenne, French Guiana
| | - Antoine Defo
- Pediatric Unit, Cayenne General Hospital, Cayenne, French Guiana
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Gargallo-Garriga A, Sardans J, Llusià J, Peguero G, Asensio D, Ogaya R, Urbina I, Langenhove LV, Verryckt LT, Courtois EA, Stahl C, Grau O, Urban O, Janssens IA, Nolis P, Pérez-Trujillo M, Parella T, Peñuelas J. 31P-NMR Metabolomics Revealed Species-Specific Use of Phosphorous in Trees of a French Guiana Rainforest. Molecules 2020; 25:molecules25173960. [PMID: 32877991 PMCID: PMC7504763 DOI: 10.3390/molecules25173960] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/23/2020] [Accepted: 07/30/2020] [Indexed: 11/16/2022] Open
Abstract
Productivity of tropical lowland moist forests is often limited by availability and functional allocation of phosphorus (P) that drives competition among tree species and becomes a key factor in determining forestall community diversity. We used non-target 31P-NMR metabolic profiling to study the foliar P-metabolism of trees of a French Guiana rainforest. The objective was to test the hypotheses that P-use is species-specific, and that species diversity relates to species P-use and concentrations of P-containing compounds, including inorganic phosphates, orthophosphate monoesters and diesters, phosphonates and organic polyphosphates. We found that tree species explained the 59% of variance in 31P-NMR metabolite profiling of leaves. A principal component analysis showed that tree species were separated along PC 1 and PC 2 of detected P-containing compounds, which represented a continuum going from high concentrations of metabolites related to non-active P and P-storage, low total P concentrations and high N:P ratios, to high concentrations of P-containing metabolites related to energy and anabolic metabolism, high total P concentrations and low N:P ratios. These results highlight the species-specific use of P and the existence of species-specific P-use niches that are driven by the distinct species-specific position in a continuum in the P-allocation from P-storage compounds to P-containing molecules related to energy and anabolic metabolism.
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Affiliation(s)
- Albert Gargallo-Garriga
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, 08193 Catalonia, Spain; (J.S.); (G.P.); (O.G.); (J.P.)
- CREAF, Cerdanyola del Vallès, 08193 Catalonia, Spain; (J.L.); (D.A.); (R.O.); (I.U.)
- Global Change Research Institute, Czech Academy of Sciences, Belidla 986/4a, CZ-60300 Brno, Czech Republic;
- Correspondence: ; Tel.: +34-935814221
| | - Jordi Sardans
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, 08193 Catalonia, Spain; (J.S.); (G.P.); (O.G.); (J.P.)
- CREAF, Cerdanyola del Vallès, 08193 Catalonia, Spain; (J.L.); (D.A.); (R.O.); (I.U.)
| | - Joan Llusià
- CREAF, Cerdanyola del Vallès, 08193 Catalonia, Spain; (J.L.); (D.A.); (R.O.); (I.U.)
- Global Change Research Institute, Czech Academy of Sciences, Belidla 986/4a, CZ-60300 Brno, Czech Republic;
| | - Guille Peguero
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, 08193 Catalonia, Spain; (J.S.); (G.P.); (O.G.); (J.P.)
- CREAF, Cerdanyola del Vallès, 08193 Catalonia, Spain; (J.L.); (D.A.); (R.O.); (I.U.)
- Department of Biology, University of Antwerp, BE-2610 Wilrijk, Belgium; (L.V.L.); (L.T.V.); (E.A.C.); (I.A.J.)
| | - Dolores Asensio
- CREAF, Cerdanyola del Vallès, 08193 Catalonia, Spain; (J.L.); (D.A.); (R.O.); (I.U.)
- Global Change Research Institute, Czech Academy of Sciences, Belidla 986/4a, CZ-60300 Brno, Czech Republic;
| | - Romà Ogaya
- CREAF, Cerdanyola del Vallès, 08193 Catalonia, Spain; (J.L.); (D.A.); (R.O.); (I.U.)
- Global Change Research Institute, Czech Academy of Sciences, Belidla 986/4a, CZ-60300 Brno, Czech Republic;
| | - Ifigenia Urbina
- CREAF, Cerdanyola del Vallès, 08193 Catalonia, Spain; (J.L.); (D.A.); (R.O.); (I.U.)
- Global Change Research Institute, Czech Academy of Sciences, Belidla 986/4a, CZ-60300 Brno, Czech Republic;
| | - Leandro Van Langenhove
- Department of Biology, University of Antwerp, BE-2610 Wilrijk, Belgium; (L.V.L.); (L.T.V.); (E.A.C.); (I.A.J.)
| | - Lore T. Verryckt
- Department of Biology, University of Antwerp, BE-2610 Wilrijk, Belgium; (L.V.L.); (L.T.V.); (E.A.C.); (I.A.J.)
| | - Elodie A. Courtois
- Department of Biology, University of Antwerp, BE-2610 Wilrijk, Belgium; (L.V.L.); (L.T.V.); (E.A.C.); (I.A.J.)
- Laboratoire Ecologie, évolution, Interactions des Systèmes Amazoniens (LEEISA), Université de Guyane, CNRS, IFREMER, 97300 Cayenne, French Guiana
| | - Clément Stahl
- INRA, UMR EcoFoG, CNRS, Cirad, AgroParisTech, Université des Antilles, Université de Guyane, 97310 Kourou, France;
| | - Oriol Grau
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, 08193 Catalonia, Spain; (J.S.); (G.P.); (O.G.); (J.P.)
- CREAF, Cerdanyola del Vallès, 08193 Catalonia, Spain; (J.L.); (D.A.); (R.O.); (I.U.)
- Cirad, UMR EcoFoG (AgroParisTech, CNRS, Inra, Univ Antilles, Univ Guyane), Campus Agronomique, 97310 Kourou, French Guiana
| | - Otmar Urban
- Global Change Research Institute, Czech Academy of Sciences, Belidla 986/4a, CZ-60300 Brno, Czech Republic;
| | - Ivan A. Janssens
- Department of Biology, University of Antwerp, BE-2610 Wilrijk, Belgium; (L.V.L.); (L.T.V.); (E.A.C.); (I.A.J.)
| | - Pau Nolis
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Catalonia, Spain; (P.N.); (M.P.-T.); (T.P.)
| | - Miriam Pérez-Trujillo
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Catalonia, Spain; (P.N.); (M.P.-T.); (T.P.)
| | - Teodor Parella
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Catalonia, Spain; (P.N.); (M.P.-T.); (T.P.)
| | - Josep Peñuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, 08193 Catalonia, Spain; (J.S.); (G.P.); (O.G.); (J.P.)
- CREAF, Cerdanyola del Vallès, 08193 Catalonia, Spain; (J.L.); (D.A.); (R.O.); (I.U.)
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Briolant S, Costa MM, Nguyen C, Dusfour I, Pommier de Santi V, Girod R, Almeras L. Identification of French Guiana anopheline mosquitoes by MALDI-TOF MS profiling using protein signatures from two body parts. PLoS One 2020; 15:e0234098. [PMID: 32817616 PMCID: PMC7444543 DOI: 10.1371/journal.pone.0234098] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 07/23/2020] [Indexed: 01/17/2023] Open
Abstract
In French Guiana, the malaria, a parasitic infection transmitted by Anopheline mosquitoes, remains a disease of public health importance. To prevent malaria transmission, the main effective way remains Anopheles control. For an effective control, accurate Anopheles species identification is indispensable to distinguish malaria vectors from non-vectors. Although, morphological and molecular methods are largely used, an innovative tool, based on protein pattern comparisons, the Matrix Assisted Laser Desorption / Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS) profiling, emerged this last decade for arthropod identification. However, the limited mosquito fauna diversity of reference MS spectra remains one of the main drawback for its large usage. The aim of the present study was then to create and to share reference MS spectra for the identification of French Guiana Anopheline species. A total of eight distinct Anopheles species, among which four are malaria vectors, were collected in 6 areas. To improve Anopheles identification, two body parts, legs and thoraxes, were independently submitted to MS for the creation of respective reference MS spectra database (DB). This study underlined that double checking by MS enhanced the Anopheles identification confidence and rate of reliable classification. The sharing of this reference MS spectra DB should make easier Anopheles species monitoring in endemic malaria area to help malaria vector control or elimination programs.
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Affiliation(s)
- Sébastien Briolant
- Unité de Parasitologie et Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
- Aix Marseille Université, IRD, AP-HM, SSA, UMR Vecteurs–Infections Tropicales et Méditerranéennes (VITROME), IHU—Méditerranée Infection, Marseille, France
| | - Monique Melo Costa
- Unité de Parasitologie et Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
- Aix Marseille Université, IRD, AP-HM, SSA, UMR Vecteurs–Infections Tropicales et Méditerranéennes (VITROME), IHU—Méditerranée Infection, Marseille, France
| | - Christophe Nguyen
- Unité de Parasitologie et Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
- Aix Marseille Université, IRD, AP-HM, SSA, UMR Vecteurs–Infections Tropicales et Méditerranéennes (VITROME), IHU—Méditerranée Infection, Marseille, France
| | - Isabelle Dusfour
- Unite d’Entomologie Médicale, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | | | - Romain Girod
- Unite d’Entomologie Médicale, Institut Pasteur de la Guyane, Cayenne, French Guiana
- Medical Entomology Unit, Institut Pasteur de Madagascar, Antananarivo, Madagascar
| | - Lionel Almeras
- Unité de Parasitologie et Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
- Aix Marseille Université, IRD, AP-HM, SSA, UMR Vecteurs–Infections Tropicales et Méditerranéennes (VITROME), IHU—Méditerranée Infection, Marseille, France
- * E-mail:
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Nacher M, Adenis A, Guarmit B, Lucarelli A, Blanchet D, Demar M, Djossou F, Abboud P, Epelboin L, Couppié P. What is AIDS in the Amazon and the Guianas in the 90-90-90 era? PLoS One 2020; 15:e0236368. [PMID: 32706836 PMCID: PMC7380608 DOI: 10.1371/journal.pone.0236368] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 07/02/2020] [Indexed: 11/26/2022] Open
Abstract
Introduction In the past decade, new diagnostic methods and strategies have appeared, HIV testing efforts and the generalization of antiretroviral therapy may have influenced the number of opportunistic diagnoses and mortality of HIV-infected patients. To test this hypothesis we compiled data on the top opportunistic infections and causes of early death in the HIV cohort of French Guiana. Methods HIV-infected persons followed in Cayenne, Kourou, and Saint Laurent du Maroni hospitals from 2010 to 2019 were studied. Annual incidence of different opportunistic infections and annual deaths are compiled. For patients with opportunistic infections we calculated the proportion of early deaths. Results At the time of analysis, among 2 459 patients, (treated and untreated) 90% had a viral load <400 copies, 91% of the patients in the cohort were on antiretroviral treatment, and 94.2% of patients on treatment for over 6 months had undetectable viral loads. Only 9% of patients had CD4 counts under 200 per mm3. Histoplasmosis clearly remained the most frequent (128 cases) opportunistic infection among HIV-infected persons followed by cerebral toxoplasmosis (63 cases) and esophageal candidiasis (41 cases). Cryptococcal meningitis was ranked 5th most frequent opportunistic infection as was tuberculosis (31 cases). The trend for a sharp decline in early deaths continued (3.9% of patients). Conclusions Despite the successes of antiretrovirals, patients presenting with advanced HIV are still common and they are still at risk of dying. Improved diagnosis, and notably systematic screening with appropriate tools are still important areas of potential progress.
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Affiliation(s)
- Mathieu Nacher
- Centre d'Investigation Clinique Antilles Guyane, INSERM 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- DFR Santé, Université de Guyane, Cayenne, French Guiana
- * E-mail:
| | - Antoine Adenis
- Centre d'Investigation Clinique Antilles Guyane, INSERM 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Basma Guarmit
- COREVIH Guyane, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Aude Lucarelli
- Hôpital de Jour Adultes, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Denis Blanchet
- Laboratory, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Magalie Demar
- DFR Santé, Université de Guyane, Cayenne, French Guiana
- Laboratory, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- UMR TBIP, Université de Guyane, Cayenne, French Guiana
| | - Felix Djossou
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Philippe Abboud
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Loïc Epelboin
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Pierre Couppié
- DFR Santé, Université de Guyane, Cayenne, French Guiana
- Service de Dermatologie-vénéréologie, Centre Hospitalier de Cayenne, Cayenne, French Guiana
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Boissier O, Feer F, Henry PY, Forget PM. Modifications of the rain forest frugivore community are associated with reduced seed removal at the community level. Ecol Appl 2020; 30:e02086. [PMID: 32011762 DOI: 10.1002/eap.2086] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/02/2019] [Indexed: 06/10/2023]
Abstract
Tropical rain forests worldwide are under increasing pressure from human activities, which are altering key ecosystem processes such as plant-animal interactions. However, while the direct impact of anthropogenic disturbance on animal communities has been well studied, the consequences of such defaunation for mutualistic interactions such as seed dispersal remains chiefly understood at the plant species level. We asked whether communities of endozoochorous tree species had altered seed removal in forests affected by hunting and logging and if this could be related to modifications of the frugivore community. At two contrasting forest sites in French Guiana, Nouragues (protected) and Montagne de Kaw (hunted and partly logged), we focused on four families of animal-dispersed trees (Sapotaceae, Myristicaceae, Burseraceae, and Fabaceae), which represent 88% of all endozoochorous trees that were fruiting at the time and location of the study. We assessed the abundance of the seed dispersers and predators of these four focal families by conducting diurnal distance sampling along line transects. Densities of several key seed dispersers such as large-bodied primates were greatly reduced at Montagne de Kaw, where the specialist frugivore Ateles paniscus is probably extinct. In parallel, we estimated seed removal rates from fruit and seed counts conducted in 1-m2 quadrats placed on the ground beneath fruiting trees. Seed removal rates dropped from 77% at Nouragues to 47 % at Montagne de Kaw, confirming that the loss of frugivores associated with human disturbance impacts seed removal at the community level. In contrast to Sapotaceae, whose seeds are dispersed by mammals only, weaker declines in seed removal for Burseraceae and Myristicaceae suggest that some compensation may occur for these bird- and mammal-dispersed families, possibly because of the high abundance of Toucans at the disturbed site. The defaunation process currently occurring across many tropical forests could dramatically reduce the diversity of entire communities of animal-dispersed trees through seed removal limitation.
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Affiliation(s)
- Olivier Boissier
- UMR 7179 MNHN - CNRS, Muséum National d'Histoire Naturelle, 1, avenue du Petit Château, 91800, Brunoy, France
| | - François Feer
- UMR 7179 MNHN - CNRS, Muséum National d'Histoire Naturelle, 1, avenue du Petit Château, 91800, Brunoy, France
| | - Pierre-Yves Henry
- UMR 7179 MNHN - CNRS, Muséum National d'Histoire Naturelle, 1, avenue du Petit Château, 91800, Brunoy, France
| | - Pierre-Michel Forget
- UMR 7179 MNHN - CNRS, Muséum National d'Histoire Naturelle, 1, avenue du Petit Château, 91800, Brunoy, France
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Servigne P, Orivel J, Azémar F, Carpenter J, Dejean A, Corbara B. An uneasy alliance: a nesting association between aggressive ants and equally fierce social wasps. Insect Sci 2020; 27:122-132. [PMID: 29659142 DOI: 10.1111/1744-7917.12597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 03/06/2018] [Accepted: 03/12/2018] [Indexed: 06/08/2023]
Abstract
Although the Neotropical territorially dominant arboreal ant Azteca chartifex Forel is very aggressive towards any intruder, its populous colonies tolerate the close presence of the fierce polistine wasp Polybia rejecta (F.). In French Guiana, 83.33% of the 48 P. rejecta nests recorded were found side by side with those of A. chartifex. This nesting association results in mutual protection from predators (i.e., the wasps protected from army ants; the ants protected from birds). We conducted field studies, laboratory-based behavioral experiments and chemical analyses to elucidate the mechanisms allowing the persistence of this association. Due to differences in the cuticular profiles of the two species, we eliminated the possibility of chemical mimicry. Also, analyses of the carton nests did not reveal traces of marking on the envelopes. Because ant forager flows were not perturbed by extracts from the wasps' Dufour's and venom glands, we rejected any hypothetical action of repulsive chemicals. Nevertheless, we noted that the wasps "scraped" the surface of the upper part of their nest envelope using their mandibles, likely removing the ants' scent trails, and an experiment showed that ant foragers were perturbed by the removal of their scent trails. This leads us to use the term "erasure hypothesis." Thus, this nesting association persists thanks to a relative tolerance by the ants towards wasp presence and the behavior of the wasps that allows them to "contain" their associated ants through the elimination of their scent trails, direct attacks, "wing-buzzing" behavior and ejecting the ants.
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Affiliation(s)
- Pablo Servigne
- Ecologie Sociale, CP 231 Université Libre de Bruxelles (ULB), Campus Plaine, Boulevard du Triomphe, Brussels, Belgium
| | - Jérôme Orivel
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, Kourou, France
| | - Frédéric Azémar
- EcoLab, CNRS, INPT, UPS, Université de Toulouse, Toulouse, France
| | - James Carpenter
- Division of Invertebrate Zoology, American Museum of Natural History, New York, New York, USA
| | - Alain Dejean
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, Kourou, France
- EcoLab, CNRS, INPT, UPS, Université de Toulouse, Toulouse, France
| | - Bruno Corbara
- CNRS, LMGE, Université Clermont Auvergne, Clermont-Ferrand, France
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Maury-Brachet R, Gentes S, Dassié EP, Feurtet-Mazel A, Vigouroux R, Laperche V, Gonzalez P, Hanquiez V, Mesmer-Dudons N, Durrieu G, Legeay A. Mercury contamination levels in the bioindicator piscivorous fish Hoplias aïmara in French Guiana rivers: mapping for risk assessment. Environ Sci Pollut Res Int 2020; 27:3624-3636. [PMID: 30610584 DOI: 10.1007/s11356-018-3983-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 12/11/2018] [Indexed: 06/09/2023]
Abstract
In French Guiana, native populations present high level of mercury contamination, which has been linked to the consumption of contaminated fishes. The goal of this study is to undertake a cartography of mercury contamination levels in fishes from the six main Guiana rivers. The selected species for this study is the ubiquitous piscivorous fish Hoplias aimara. A total number of 575 fishes from 134 discrete fishing sites are regrouped into 51 river sectors. Results from this study permits to rank the six main Guiana rivers by their mean level of contamination: Oyapock (0.548 mg kg-1), Comté (0.624 mg kg-1), Maroni (0.671 mg kg-1), Approuague (0.684 mg kg-1), Mana (0.675 mg kg-1), and Sinnamary (1.025 mg kg-1). The contamination is however not spatially homogenous along each river, and a map of the different levels of mercury contamination in fishes is provided. Sectors of low mean Hg contamination are observed both upstream (0.471 mg kg-1) and downstream (0.424 mg kg-1), corresponding to areas without any influence of gold mining activities and areas under the influence of estuarine dilution, respectively. Anoxia and gold mining activities are found to be the two main factors responsible for the high mercury concentration in fish muscles. While mean levels of mercury contaminations are higher in anoxia areas (1.029 mg kg-1), contaminations induced by gold mining activities (0.717 mg kg-1) present the most harmful consequences to human populations. No significant differences in Hg concentrations are observed between 2005 and 2014 for neither a pristine nor a gold mining area, while Hg concentration differences are observed between former (0.550 mg kg-1) and current gold mining sites (0.717 mg kg-1).
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Affiliation(s)
- Régine Maury-Brachet
- Université de Bordeaux, UMR EPOC 5805, Station Marine, Place du Docteur Peyneau, 33120, Arcachon, France.
| | - Sophie Gentes
- Université de Bordeaux, UMR EPOC 5805, Station Marine, Place du Docteur Peyneau, 33120, Arcachon, France
| | - Emilie P Dassié
- Université de Bordeaux, UMR EPOC 5805, Station Marine, Place du Docteur Peyneau, 33120, Arcachon, France
| | - Agnès Feurtet-Mazel
- Université de Bordeaux, UMR EPOC 5805, Station Marine, Place du Docteur Peyneau, 33120, Arcachon, France
| | | | - Valérie Laperche
- French Geological Survey, Laboratoire d'Environnement et d'Écotechnologies, Orléans, France
| | - Patrice Gonzalez
- Université de Bordeaux, UMR EPOC 5805, Station Marine, Place du Docteur Peyneau, 33120, Arcachon, France
| | - Vincent Hanquiez
- Université de Bordeaux, UMR EPOC 5805, Station Marine, Place du Docteur Peyneau, 33120, Arcachon, France
| | - Nathalie Mesmer-Dudons
- Université de Bordeaux, UMR EPOC 5805, Station Marine, Place du Docteur Peyneau, 33120, Arcachon, France
| | - Gilles Durrieu
- Université de Bretagne Sud, LMBA UMR 6205, Lorient, France
| | - Alexia Legeay
- Université de Bordeaux, UMR EPOC 5805, Station Marine, Place du Docteur Peyneau, 33120, Arcachon, France
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