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Velut G, de Laval F, Berry M, Dufour Gaume F, André N, Epelboin L, Lavergne A, Enfissi A, Djossou F, Rousset D, Briolant S. Etiology of Acute Febrile Illnesses in Adults in the Defense Community in French Guiana. Am J Trop Med Hyg 2024; 110:819-825. [PMID: 38377600 PMCID: PMC10993844 DOI: 10.4269/ajtmh.22-0638] [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: 10/06/2022] [Accepted: 06/13/2023] [Indexed: 02/22/2024] Open
Abstract
In tropical countries, acute febrile illnesses represent a complex clinical problem for general practitioners. We describe the prevalence of different etiologies of acute febrile illnesses occurring among French service members and their families, excluding children, in general practice in French Guiana. From June 2017 to March 2020, patients with a fever ≥37.8°C with a duration of less than 15 days who sought medical care at the army medical centers in Cayenne and Kourou were prospectively enrolled. Based on clinical presentation, blood, urine, nasopharyngeal, and stool samples were collected for diagnostic testing for viruses, bacteria, and parasites (by direct examination, microscopic examination of blood smears, culture, serology, or polymerase chain reaction), and standardized biological tests were systematically performed. Among 175 patients retained for analysis, fever with nonspecific symptoms was predominant (46.9%), with 10 Plasmodium vivax malaria cases, 8 dengue infections, and 6 cases of Q fever. The second most frequent cause of acute febrile illness was upper respiratory tract infections (32.0%) due to influenza virus (n = 18) or human rhinovirus (n = 10). Among the causes of acute febrile illness in French Guiana, clinicians should first consider arboviruses and malaria, as well as Q fever in cases of elevated C-reactive protein with nonspecific symptoms and influenza in cases of signs and symptoms associated with upper respiratory tract infections. Despite an expanded microbiological search, the etiology of 51.4% of acute febrile illnesses remain unknown. Further investigations will be necessary to identify the etiology of acute febrile illnesses, including new pathogens, in French Guiana.
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Affiliation(s)
- Guillaume Velut
- Centre d’Epidémiologie et de Santé Publique des Armées, Marseille, France
| | - Franck de Laval
- Centre d’Epidémiologie et de Santé Publique des Armées, Marseille, France
- Aix-Marseille Université, INSERM, Institut de Recherche pour le Développement, Economic and Social Sciences, Health Systems, and Medical Informatics, Marseille, France
| | - Morgane Berry
- Centre Médical Interarmées de Cayenne, Cayenne, French Guiana
| | | | - Nathalie André
- Direction Interarmées du Service de Santé des Forces Armées en Guyane, Cayenne, French Guiana
| | - Loïc Epelboin
- Service des Maladies Infectieuses et Tropicales, et Centre d’investigation Clinique (CIC INSERM 1424), Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Anne Lavergne
- Laboratoire des Interactions Virus-Hôtes, Institut Pasteur de la Guyane, Cayenne Cedex, French Guiana
| | - Antoine Enfissi
- Laboratoire de Virologie, Institut Pasteur de la Guyane, Cayenne Cedex, French Guiana
| | - Felix Djossou
- Service des Maladies Infectieuses et Tropicales, et Centre d’investigation Clinique (CIC INSERM 1424), Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Dominique Rousset
- Laboratoire de Virologie, Institut Pasteur de la Guyane, Cayenne Cedex, French Guiana
| | - Sébastien Briolant
- Aix Marseille Université, Institut de Recherche pour le Développement, Assistance Publique-Hôpitaux de Marseille, Service de Santé des Armées, Vecteurs – Infections Tropicales et Méditerranéennes, Marseille, France
- Institut Hospitalo-Universitaire – Méditerranée Infection, Marseille, France
- Unité de Parasitologie Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
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2
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Klitting R, Piorkowski G, Rousset D, Cabié A, Frumence E, Lagrave A, Lavergne A, Enfissi A, Dos Santos G, Fagour L, Césaire R, Jaffar-Bandjee MC, Traversier N, Gérardin P, Amaral R, Fournier L, Leon L, Dorléans F, Vincent M, Fontaine A, Failloux AB, Ayhan N, Pezzi L, Grard G, Durand GA, de Lamballerie X. Molecular epidemiology identifies the expansion of the DENV2 epidemic lineage from the French Caribbean Islands to French Guiana and mainland France, 2023 to 2024. Euro Surveill 2024; 29:2400123. [PMID: 38551097 PMCID: PMC10979529 DOI: 10.2807/1560-7917.es.2024.29.13.2400123] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 03/27/2024] [Indexed: 04/01/2024] Open
Abstract
In 2023, dengue virus serotype 2 (DENV2) affected most French overseas territories. In the French Caribbean Islands, viral circulation continues with > 30,000 suspected infections by March 2024. Genome sequence analysis reveals that the epidemic lineage in the French Caribbean islands has also become established in French Guiana but not Réunion. It has moreover seeded autochthonous circulation events in mainland France. To guide prevention of further inter-territorial spread and DENV introduction in non-endemic settings, continued molecular surveillance and mosquito control are essential.
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Affiliation(s)
- Raphaëlle Klitting
- National Reference Center for Arboviruses, Inserm-IRBA, Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ, Università di Corsica, IRD 190, Inserm 1207, IRBA), Marseille, France
| | - Géraldine Piorkowski
- National Reference Center for Arboviruses, Inserm-IRBA, Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ, Università di Corsica, IRD 190, Inserm 1207, IRBA), Marseille, France
| | - Dominique Rousset
- Associated National Reference Center for Arboviruses, Virology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - André Cabié
- Service de Maladies infectieuses et tropicales, CHU de Martinique, Fort-de-France, France
- PCCEI, Université de Montpellier, INSERM, EFS, Montpellier, France
- CIC Antilles Guyane, INSERM CIC1424, Fort-de-France, France
| | - Etienne Frumence
- Associated National Reference Center for Arboviruses, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
- Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
| | - Alisé Lagrave
- Associated National Reference Center for Arboviruses, Virology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Anne Lavergne
- Associated National Reference Center for Arboviruses, Virology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Antoine Enfissi
- Associated National Reference Center for Arboviruses, Virology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - George Dos Santos
- PCCEI, Université de Montpellier, INSERM, EFS, Montpellier, France
- Laboratoire de virologie, CHU de Martinique, Fort-de-France, France
| | - Laurence Fagour
- PCCEI, Université de Montpellier, INSERM, EFS, Montpellier, France
- Laboratoire de virologie, CHU de Martinique, Fort-de-France, France
| | - Raymond Césaire
- Pôle de biologie territoriale, CHU de Guadeloupe, Pointe-à-Pitre, France
- PCCEI, Université de Montpellier, INSERM, EFS, Montpellier, France
| | - Marie-Christine Jaffar-Bandjee
- Associated National Reference Center for Arboviruses, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
- Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
| | - Nicolas Traversier
- Associated National Reference Center for Arboviruses, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
- Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
| | | | - Rayane Amaral
- Unité des Virus Émergents (UVE: Aix-Marseille Univ, Università di Corsica, IRD 190, Inserm 1207, IRBA), Marseille, France
| | | | - Lucie Leon
- Santé publique France, Cellule Antilles, Saint-Maurice, France
| | | | - Muriel Vincent
- Santé publique France - La Réunion, Saint-Denis, La Réunion, France
| | - Albin Fontaine
- Institut de Recherche Biomédicale des Armées (IRBA), Unité de virologie, Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ, Università di Corsica, IRD 190, Inserm 1207, IRBA), Marseille, France
| | - Anna-Bella Failloux
- Department of Virology, Arboviruses and Insect Vectors, Institut Pasteur, Paris, France
| | - Nazli Ayhan
- National Reference Center for Arboviruses, Inserm-IRBA, Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ, Università di Corsica, IRD 190, Inserm 1207, IRBA), Marseille, France
| | - Laura Pezzi
- National Reference Center for Arboviruses, Inserm-IRBA, Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ, Università di Corsica, IRD 190, Inserm 1207, IRBA), Marseille, France
| | - Gilda Grard
- National Reference Center for Arboviruses, Inserm-IRBA, Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ, Università di Corsica, IRD 190, Inserm 1207, IRBA), Marseille, France
| | - Guillaume André Durand
- National Reference Center for Arboviruses, Inserm-IRBA, Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ, Università di Corsica, IRD 190, Inserm 1207, IRBA), Marseille, France
| | - Xavier de Lamballerie
- National Reference Center for Arboviruses, Inserm-IRBA, Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ, Università di Corsica, IRD 190, Inserm 1207, IRBA), Marseille, France
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3
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Bonifay T, Le Turnier P, Epelboin Y, Carvalho L, De Thoisy B, Djossou F, Duchemin JB, Dussart P, Enfissi A, Lavergne A, Mutricy R, Nacher M, Rabier S, Talaga S, Talarmin A, Rousset D, Epelboin L. Review on Main Arboviruses Circulating on French Guiana, An Ultra-Peripheric European Region in South America. Viruses 2023; 15:1268. [PMID: 37376570 PMCID: PMC10302420 DOI: 10.3390/v15061268] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023] Open
Abstract
French Guiana (FG), a French overseas territory in South America, is susceptible to tropical diseases, including arboviruses. The tropical climate supports the proliferation and establishment of vectors, making it difficult to control transmission. In the last ten years, FG has experienced large outbreaks of imported arboviruses such as Chikungunya and Zika, as well as endemic arboviruses such as dengue, Yellow fever, and Oropouche virus. Epidemiological surveillance is challenging due to the differing distributions and behaviors of vectors. This article aims to summarize the current knowledge of these arboviruses in FG and discuss the challenges of arbovirus emergence and reemergence. Effective control measures are hampered by the nonspecific clinical presentation of these diseases, as well as the Aedes aegypti mosquito's resistance to insecticides. Despite the high seroprevalence of certain viruses, the possibility of new epidemics cannot be ruled out. Therefore, active epidemiological surveillance is needed to identify potential outbreaks, and an adequate sentinel surveillance system and broad virological diagnostic panel are being developed in FG to improve disease management.
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Affiliation(s)
- Timothee Bonifay
- Centre d’Investigation Clinique Antilles-Guyane, Inserm 1424, Centre Hospitalier de Cayenne, 97306 Cayenne, French Guiana, France; (T.B.); (P.L.T.)
| | - Paul Le Turnier
- Centre d’Investigation Clinique Antilles-Guyane, Inserm 1424, Centre Hospitalier de Cayenne, 97306 Cayenne, French Guiana, France; (T.B.); (P.L.T.)
- Infectious Diseases Department, Centre Hospitalier de Cayenne, 97306 Cayenne, French Guiana, France
| | - Yanouk Epelboin
- Microbiota of Insect Vectors Group, Institut Pasteur de la Guyane, 97300 Cayenne, French Guiana, France
| | - Luisiane Carvalho
- Santé Publique France, Cellule Guyane, 97300 Cayenne, French Guiana, France
| | - Benoit De Thoisy
- Laboratoire des Interactions Virus-Hôtes, Institut Pasteur de la Guyane, 97300 Cayenne, French Guiana, France
| | - Félix Djossou
- Infectious Diseases Department, Centre Hospitalier de Cayenne, 97306 Cayenne, French Guiana, France
| | - Jean-Bernard Duchemin
- Unité d’Entomologie Médicale, Institut Pasteur de la Guyane, 97300 Cayenne, French Guiana, France
| | | | - Antoine Enfissi
- Laboratoire de Virologie, Institut Pasteur de la Guyane, 97300 Cayenne, French Guiana, France
| | - Anne Lavergne
- Laboratoire des Interactions Virus-Hôtes, Institut Pasteur de la Guyane, 97300 Cayenne, French Guiana, France
- Laboratoire de Virologie, Institut Pasteur de la Guyane, 97300 Cayenne, French Guiana, France
| | - Rémi Mutricy
- Emergency Department, Centre Hospitalier de Cayenne, 97306 Cayenne, French Guiana, France
| | - Mathieu Nacher
- Centre d’Investigation Clinique Antilles-Guyane, Inserm 1424, Centre Hospitalier de Cayenne, 97306 Cayenne, French Guiana, France; (T.B.); (P.L.T.)
| | - Sébastien Rabier
- Centre d’Investigation Clinique Antilles-Guyane, Inserm 1424, Centre Hospitalier de Cayenne, 97306 Cayenne, French Guiana, France; (T.B.); (P.L.T.)
| | - Stanislas Talaga
- Unité d’Entomologie Médicale, Institut Pasteur de la Guyane, 97300 Cayenne, French Guiana, France
| | - Antoine Talarmin
- Unité Transmission, Réservoir et Diversité des Pathogènes, Institut Pasteur de Guadeloupe, 97139 Les Abymes, Guadeloupe, France
| | - Dominique Rousset
- Laboratoire de Virologie, Institut Pasteur de la Guyane, 97300 Cayenne, French Guiana, France
| | - Loïc Epelboin
- Centre d’Investigation Clinique Antilles-Guyane, Inserm 1424, Centre Hospitalier de Cayenne, 97306 Cayenne, French Guiana, France; (T.B.); (P.L.T.)
- Infectious Diseases Department, Centre Hospitalier de Cayenne, 97306 Cayenne, French Guiana, France
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4
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Epelboin L, Abboud P, Abdelmoumen K, About F, Adenis A, Blaise T, Blaizot R, Bonifay T, Bourne-Watrin M, Boutrou M, Carles G, Carlier PY, Carod JF, Carvalho L, Couppié P, De Toffol B, Delon F, Demar M, Destoop J, Douine M, Droz JP, Elenga N, Enfissi A, Franck YK, Fremery A, Gaillet M, Kallel H, Kpangon AA, Lavergne A, Le Turnier P, Maisonobe L, Michaud C, Mutricy R, Nacher M, Naldjinan-Kodbaye R, Oberlis M, Odonne G, Osei L, Pujo J, Rabier S, Roman-Laverdure B, Rousseau C, Rousset D, Sabbah N, Sainte-Rose V, Schaub R, Sylla K, Tareau MA, Tertre V, Thorey C, Vialette V, Walter G, Zappa M, Djossou F, Vignier N. [Overview of infectious and non-infectious diseases in French Guiana in 2022]. Med Trop Sante Int 2023; 3:mtsi.v3i1.2023.308. [PMID: 37389381 PMCID: PMC10300792 DOI: 10.48327/mtsi.v3i1.2023.308] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/15/2022] [Indexed: 07/01/2023]
Abstract
Source of many myths, French Guiana represents an exceptional territory due to the richness of its biodiversity and the variety of its communities. The only European territory in Amazonia, surrounded by the Brazilian giant and the little-known Suriname, Ariane 6 rockets are launched from Kourou while 50% of the population lives below the poverty line. This paradoxical situation is a source of health problems specific to this territory, whether they be infectious diseases with unknown germs, intoxications or chronic pathologies.Some infectious diseases such as Q fever, toxoplasmosis, cryptococcosis or HIV infection are in common with temperate countries, but present specificities leading to sometimes different management and medical reasoning. In addition to these pathologies, many tropical diseases are present in an endemic and / or epidemic mode such as malaria, leishmaniasis, Chagas disease, histoplasmosis or dengue. Besides, Amazonian dermatology is extremely varied, ranging from rare but serious pathologies (Buruli ulcer, leprosy) to others which are frequent and benign such as agouti lice (mites of the family Trombiculidae) or papillonitis. Envenomations by wild fauna are not rare, and deserve an appropriate management of the incriminated taxon. Obstetrical, cardiovascular and metabolic cosmopolitan pathologies sometimes take on a particular dimension in French Guiana that must be taken into account in the management of patients. Finally, different types of intoxication are to be known by practitioners, especially due to heavy metals.European-level resources offer diagnostic and therapeutic possibilities that do not exist in the surrounding countries and regions, thus allowing the management of diseases that are not well known elsewhere.Thanks to these same European-level resources, research in Guyana occupies a key place within the Amazon region, despite a smaller population than in the surrounding countries. Thus, certain pathologies such as histoplasmosis of the immunocompromised patient, Amazonian toxoplasmosis or Q fever are hardly described in neighboring countries, probably due to under-diagnosis linked to more limited resources. French Guiana plays a leading role in the study of these diseases.The objective of this overview is to guide health care providers coming to or practicing in French Guiana in their daily practice, but also practitioners taking care of people returning from French Guiana.
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Affiliation(s)
- Loïc Epelboin
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Cayenne, Guyane
- Centre d'investigation clinique Guyane (Inserm CIC 1424), Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Philippe Abboud
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Karim Abdelmoumen
- Département des maladies infectieuses, Centre hospitalier de Mayotte, Mamoudzou, Mayotte
| | - Frédégonde About
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Antoine Adenis
- Centre d'investigation clinique Guyane (Inserm CIC 1424), Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Théo Blaise
- Centre d'investigation clinique Guyane (Inserm CIC 1424), Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Romain Blaizot
- Unité carcérale de soins ambulatoires, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Timothée Bonifay
- Unité carcérale de soins ambulatoires, Centre hospitalier de Cayenne, Cayenne, Guyane
| | | | - Mathilde Boutrou
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Cayenne, Guyane
- Centre d'investigation clinique Guyane (Inserm CIC 1424), Centre hospitalier de Cayenne, Cayenne, Guyane
- Département des maladies infectieuses, Centre hospitalier de Mayotte, Mamoudzou, Mayotte
- Unité carcérale de soins ambulatoires, Centre hospitalier de Cayenne, Cayenne, Guyane
- Service de dermatologie, Centre hospitalier de Cayenne, Cayenne, Guyane
- Service de gynécologie-obstétrique, Centre hospitalier de l'ouest guyanais, Saint-Laurent-du-Maroni, Guyane
- Laboratoire de biologie médicale, Centre hospitalier de l'ouest guyanais, Saint-Laurent-du-Maroni, Guyane
- Agence régionale de santé de Guyane, Cayenne, Guyane
- Santé publique France, Cayenne, Guyane
- Service de neurologie, Centre hospitalier de Cayenne, Cayenne, Guyane
- TBIP (Tropical Biome and ImmunoPhysiopathology), Université de Guyane, Cayenne, Guyane
- Laboratoire hospitalo-universitaire de parasitologie et mycologie, Centre hospitalier de Cayenne Andrée-Rosemon, Cayenne, Guyane
- Université Claude Bernard Lyon 1 et Centre Léon Bérard, Lyon, France
- Service de pédiatrie, Centre hospitalier de Cayenne, Cayenne, Guyane
- Laboratoire de virologie, Institut Pasteur de la Guyane
- Service de cardiologie, Centre hospitalier de Cayenne, Cayenne, Guyane
- Service d'accueil des urgences et SAMU, Centre hospitalier de Cayenne, Cayenne, Guyane
- Pôle des Centres délocalisés de prévention et de soins, Centre hospitalier de Cayenne, Cayenne, Guyane
- Service de réanimation, Centre hospitalier de Cayenne, Cayenne, Guyane
- Service de médecine, Centre hospitalier de Kourou, Kourou, Guyane
- Laboratoire des interactions virus-hôtes, Institut Pasteur de la Guyane, Cayenne, Guyane
- Croix-Rouge française de Guyane, Cayenne, Guyane
- Laboratoire Écologie, évolution, interactions des systèmes amazoniens (LEEISA), CNRS, Université de Guyane, IFREMER, Cayenne, Guyane
- COREVIH (Comité de coordination de la lutte contre les infections sexuellement transmissibles et le virus de l'immunodéficience humaine), Centre hospitalier de Cayenne, Cayenne, Guyane
- Service d'endocrinologie-diabétologie et maladies métaboliques, Centre hospitalier de Cayenne, Cayenne, Guyane
- Service de médecine, Centre hospitalier de l'ouest guyanais, Saint-Laurent-du-Maroni, Guyane
- Direction interarmées du service de santé (DIASS)
- Laboratoire Eurofins Guyane, site de Kourou, Centre hospitalier de Kourou, Guyane
- Service de radiologie, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Gabriel Carles
- Service de gynécologie-obstétrique, Centre hospitalier de l'ouest guyanais, Saint-Laurent-du-Maroni, Guyane
| | | | - Jean-François Carod
- Laboratoire de biologie médicale, Centre hospitalier de l'ouest guyanais, Saint-Laurent-du-Maroni, Guyane
| | | | - Pierre Couppié
- Service de dermatologie, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Bertrand De Toffol
- Centre d'investigation clinique Guyane (Inserm CIC 1424), Centre hospitalier de Cayenne, Cayenne, Guyane
- Service de neurologie, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - François Delon
- Laboratoire Eurofins Guyane, site de Kourou, Centre hospitalier de Kourou, Guyane
| | - Magalie Demar
- TBIP (Tropical Biome and ImmunoPhysiopathology), Université de Guyane, Cayenne, Guyane
- Laboratoire hospitalo-universitaire de parasitologie et mycologie, Centre hospitalier de Cayenne Andrée-Rosemon, Cayenne, Guyane
| | - Justin Destoop
- Service de dermatologie, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Maylis Douine
- Centre d'investigation clinique Guyane (Inserm CIC 1424), Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Jean-Pierre Droz
- Université Claude Bernard Lyon 1 et Centre Léon Bérard, Lyon, France
| | - Narcisse Elenga
- Service de pédiatrie, Centre hospitalier de Cayenne, Cayenne, Guyane
| | | | - Yves-Kénol Franck
- Service de cardiologie, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Alexis Fremery
- Service d'accueil des urgences et SAMU, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Mélanie Gaillet
- Pôle des Centres délocalisés de prévention et de soins, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Hatem Kallel
- Service de réanimation, Centre hospitalier de Cayenne, Cayenne, Guyane
| | | | - Anne Lavergne
- Laboratoire des interactions virus-hôtes, Institut Pasteur de la Guyane, Cayenne, Guyane
| | - Paul Le Turnier
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Lucas Maisonobe
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Céline Michaud
- Pôle des Centres délocalisés de prévention et de soins, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Rémi Mutricy
- Service d'accueil des urgences et SAMU, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Mathieu Nacher
- Centre d'investigation clinique Guyane (Inserm CIC 1424), Centre hospitalier de Cayenne, Cayenne, Guyane
| | | | | | - Guillaume Odonne
- Laboratoire Écologie, évolution, interactions des systèmes amazoniens (LEEISA), CNRS, Université de Guyane, IFREMER, Cayenne, Guyane
| | - Lindsay Osei
- Service de pédiatrie, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Jean Pujo
- Service d'accueil des urgences et SAMU, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Sébastien Rabier
- Centre d'investigation clinique Guyane (Inserm CIC 1424), Centre hospitalier de Cayenne, Cayenne, Guyane
- COREVIH (Comité de coordination de la lutte contre les infections sexuellement transmissibles et le virus de l'immunodéficience humaine), Centre hospitalier de Cayenne, Cayenne, Guyane
| | | | - Cyril Rousseau
- Santé publique France, Cayenne, Guyane
- Pôle des Centres délocalisés de prévention et de soins, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Dominique Rousset
- Laboratoire hospitalo-universitaire de parasitologie et mycologie, Centre hospitalier de Cayenne Andrée-Rosemon, Cayenne, Guyane
| | - Nadia Sabbah
- Service d'endocrinologie-diabétologie et maladies métaboliques, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Vincent Sainte-Rose
- Laboratoire hospitalo-universitaire de parasitologie et mycologie, Centre hospitalier de Cayenne Andrée-Rosemon, Cayenne, Guyane
| | - Roxane Schaub
- Centre d'investigation clinique Guyane (Inserm CIC 1424), Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Karamba Sylla
- Service de médecine, Centre hospitalier de l'ouest guyanais, Saint-Laurent-du-Maroni, Guyane
| | - Marc-Alexandre Tareau
- Centre d'investigation clinique Guyane (Inserm CIC 1424), Centre hospitalier de Cayenne, Cayenne, Guyane
- Laboratoire Écologie, évolution, interactions des systèmes amazoniens (LEEISA), CNRS, Université de Guyane, IFREMER, Cayenne, Guyane
| | | | - Camille Thorey
- Service de médecine, Centre hospitalier de l'ouest guyanais, Saint-Laurent-du-Maroni, Guyane
| | - Véronique Vialette
- Laboratoire Eurofins Guyane, site de Kourou, Centre hospitalier de Kourou, Guyane
| | - Gaëlle Walter
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Magaly Zappa
- Service de radiologie, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Félix Djossou
- Unité des maladies infectieuses et tropicales, Centre hospitalier de Cayenne, Cayenne, Guyane
| | - Nicolas Vignier
- Centre d'investigation clinique Guyane (Inserm CIC 1424), Centre hospitalier de Cayenne, Cayenne, Guyane
- COREVIH (Comité de coordination de la lutte contre les infections sexuellement transmissibles et le virus de l'immunodéficience humaine), Centre hospitalier de Cayenne, Cayenne, Guyane
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5
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Hozé N, Salje H, Rousset D, Fritzell C, Vanhomwegen J, Bailly S, Najm M, Enfissi A, Manuguerra JC, Flamand C, Cauchemez S. Author Correction: Reconstructing Mayaro virus circulation in French Guiana shows frequent spillovers. Nat Commun 2023; 14:1064. [PMID: 36828849 PMCID: PMC9957981 DOI: 10.1038/s41467-023-36843-z] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Affiliation(s)
- Nathanaël Hozé
- grid.428999.70000 0001 2353 6535Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, UMR2000, CNRS, 75015 Paris, France
| | - Henrik Salje
- grid.428999.70000 0001 2353 6535Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, UMR2000, CNRS, 75015 Paris, France ,grid.5335.00000000121885934Department of Genetics, University of Cambridge, Cambridge, UK
| | - Dominique Rousset
- Arbovirus National Reference Center, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Camille Fritzell
- Epidemiology Unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Jessica Vanhomwegen
- grid.428999.70000 0001 2353 6535Environment and Infectious Risks Unit, Institut Pasteur, Paris, France
| | - Sarah Bailly
- Epidemiology Unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Matthieu Najm
- grid.428999.70000 0001 2353 6535Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, UMR2000, CNRS, 75015 Paris, France
| | - Antoine Enfissi
- Arbovirus National Reference Center, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Jean-Claude Manuguerra
- grid.428999.70000 0001 2353 6535Environment and Infectious Risks Unit, Institut Pasteur, Paris, France
| | - Claude Flamand
- Epidemiology Unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Simon Cauchemez
- Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, UMR2000, CNRS, 75015, Paris, France.
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6
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Miliu A, Lavergne A, Succo T, Laizé C, Andrieu A, Enfissi A, Enouf V, Van der Werf S, Blanchet D, Demar M, Carod JF, Carage T, Flamand C, Tirera S, Simon-Lorière E, Rousseau C, Rousset D. Dynamics of SARS-CoV-2 lineages in French Guiana in 2020-2021: 4 epidemic waves with cross-influences from Europe and South America. Infect Genet Evol 2022; 105:105370. [PMID: 36184049 PMCID: PMC9529336 DOI: 10.1016/j.meegid.2022.105370] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 09/24/2022] [Accepted: 09/26/2022] [Indexed: 11/30/2022]
Abstract
Since the first cases of SARS-CoV-2 infection in Wuhan in December 2019, this RNA virus gave rise to different viral lineages with different virological, epidemiological and immunological properties. Here we describe the dynamics of circulation of SARS-CoV-2 lineages in an Amazonian South American French overseas territory, French Guiana (FG). The data analyzed are based on the general epidemic course, and genomic surveillance data come from whole genome sequencing (WGS) as well as typing PCRs. From March 2020 to October 2021, four COVID-19 epidemic waves were observed in FG with an evolution of viral lineages influenced by virus introductions from continental France and above all by land-based introductions from neighbouring countries. The third epidemic wave from March to June 2021 was driven by a predominant Gamma introduced from Brazil and a less frequent Alpha introduced from France. This coexistence was completely substituted by Delta that initiated the fourth epidemic wave.
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Affiliation(s)
- Alexandra Miliu
- Santé publique France, Regional unit French Guiana, Cayenne, French Guiana.
| | - Anne Lavergne
- National Reference Center for Respiratory Viruses, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Tiphanie Succo
- Santé publique France, Regional unit French Guiana, Cayenne, French Guiana
| | - Claire Laizé
- Agence régionale de santé (ARS) Guyane, Cayenne, French Guiana
| | - Audrey Andrieu
- Santé publique France, Regional unit French Guiana, Cayenne, French Guiana
| | - Antoine Enfissi
- National Reference Center for Respiratory Viruses, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Vincent Enouf
- National Reference Center for Respiratory Viruses, Institut Pasteur, Paris, France
| | - Sylvie Van der Werf
- National Reference Center for Respiratory Viruses, Institut Pasteur, Paris, France.
| | - Denis Blanchet
- Clinical Laboratory, Centre Hospitalier de Cayenne (CHC), Cayenne, French Guiana
| | - Magalie Demar
- Clinical Laboratory, Centre Hospitalier de Cayenne (CHC), Cayenne, French Guiana.
| | - Jean-François Carod
- Clinical laboratory of Centre Hospitalier de l'Ouest Guyanais (CHOG), Saint Laurent du Maroni, French Guiana.
| | - Thierry Carage
- Carage laboratory associated to Kourou hospital center (CHK), Kourou, French Guiana
| | - Claude Flamand
- National Reference Center for Respiratory Viruses, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Sourakhata Tirera
- National Reference Center for Respiratory Viruses, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Etienne Simon-Lorière
- Institut Pasteur, Université de Paris, G5 Evolutionary Genomics of RNA viruses, 75015 Paris, France.
| | - Cyril Rousseau
- Santé publique France, Regional unit French Guiana, Cayenne, French Guiana
| | - Dominique Rousset
- National Reference Center for Respiratory Viruses, Institut Pasteur de la Guyane, Cayenne, French Guiana.
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7
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Lambert V, Enfissi A, Lefebvre M, Pomar L, Kedous S, Guimiot F, Carles G, Lavergne A, Rousset D, Hcini N. Tonate Virus and Fetal Abnormalities, French Guiana, 2019. Emerg Infect Dis 2022; 28:445-448. [PMID: 35076005 PMCID: PMC8798706 DOI: 10.3201/eid2802.210884] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
We report a case of vertical transmission of Tonate virus in a pregnant woman from French
Guiana. The fetus showed severe necrotic and hemorrhagic lesions of the brain and spinal
cord. Clinicians should be made aware of possible adverse fetal outcomes in pregnant women
infected with Tonate virus.
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8
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Flamand C, Alves Sarmento C, Enfissi A, Bailly S, Beillard E, Gaillet M, Michaud C, Servas V, Clement N, Perilhou A, Carage T, Musso D, Carod JF, Eustache S, Tourbillon C, Boizon E, James S, Djossou F, Salje H, Cauchemez S, Rousset D. Seroprevalence of anti-SARS-CoV-2 IgG at the first epidemic peak in French Guiana, July 2020. PLoS Negl Trop Dis 2021; 15:e0009945. [PMID: 34767549 PMCID: PMC8639096 DOI: 10.1371/journal.pntd.0009945] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/02/2021] [Accepted: 10/22/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND While Latin America has been heavily affected by the pandemic, only a few seroprevalence studies have been conducted there during the first epidemic wave in the first half of 2020. METHODOLOGY/PRINCIPAL FINDINGS A cross-sectional survey was performed between 15 July 2020 and 23 July 2020 among individuals who visited 4 medical laboratories or 5 health centers for routine screening or clinical management, with the exception of symptomatic suggestive cases of covid-19. Samples were screened for the presence of anti-SARS-CoV-2 IgG directed against domain S1 of the SARS-CoV-2 spike protein using the anti-SARS-CoV-2 enzyme-linked immunosorbent assay (ELISA) from Euroimmun. CONCLUSIONS/SIGNIFICANCE The overall seroprevalence was 15.4% [9.3%-24.4%] among 480 participants, ranging from 4.0% to 25.5% across the different municipalities. The seroprevalence did not differ according to gender (p = 0.19) or age (p = 0.51). Among SARS-CoV-2 positive individuals, we found that 24.6% [11.5%-45.2%] reported symptoms consistent with COVID-19. Our findings revealed high levels of infection across the territory but a low number of resulting deaths, which can be explained by French Guiana's young population structure.
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Affiliation(s)
- Claude Flamand
- Epidemiology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
- Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, UMR2000, CNRS, Paris, France
| | | | - Antoine Enfissi
- Laboratory of Virology, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Sarah Bailly
- Epidemiology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Emmanuel Beillard
- Medical Biology Laboratory, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Mélanie Gaillet
- Health Centers Department, Cayenne Hospital Center, Cayenne, French Guiana
| | - Céline Michaud
- Health Centers Department, Cayenne Hospital Center, Cayenne, French Guiana
| | - Véronique Servas
- Health Centers Department, Cayenne Hospital Center, Cayenne, French Guiana
| | - Nathalie Clement
- Clinical Core of the Center for Translational Sciences, Institut Pasteur, Paris, France
| | - Anaïs Perilhou
- Clinical Core of the Center for Translational Sciences, Institut Pasteur, Paris, France
| | - Thierry Carage
- Carage Medical Biology Laboratory, Kourou, French Guiana
| | - Didier Musso
- Laboratoires Eurofins Labazur Guyane, Remire, French Guiana
- Aix Marseille University, IRD, AP-HM, SSA, VITROME, IHU-Méditerranée Infection, Marseille, France
| | - Jean-françois Carod
- Medical Biology laboratory, Centre Hospitalier de l’Ouest Guyanais, Saint-Laurent du Maroni, French Guiana
| | - Stéphanie Eustache
- Epidemiology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Céline Tourbillon
- Epidemiology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Elodie Boizon
- Epidemiology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Samantha James
- Epidemiology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Félix Djossou
- Infectious and Tropical Diseases Unit, Cayenne Hospital Center, Cayenne, French Guiana
| | - Henrik Salje
- Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, UMR2000, CNRS, Paris, France
- Department of Genetics, University of Cambridge, Cambridge, United Kingdom
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Simon Cauchemez
- Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, UMR2000, CNRS, Paris, France
| | - Dominique Rousset
- Laboratory of Virology, Institut Pasteur in French Guiana, Cayenne, French Guiana
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9
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Gaillet M, Pichard C, Restrepo J, Lavergne A, Perez L, Enfissi A, Abboud P, Lambert Y, Ma L, Monot M, Demar M, Djossou F, Servas V, Nacher M, Andrieu A, Prudhomme J, Michaud C, Rousseau C, Jeanne I, Duchemin JB, Epelboin L, Rousset D. Outbreak of Oropouche Virus in French Guiana. Emerg Infect Dis 2021; 27:2711-2714. [PMID: 34545800 PMCID: PMC8462337 DOI: 10.3201/eid2710.204760] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 12/03/2022] Open
Abstract
Oropouche fever is a zoonotic dengue-like syndrome caused by Oropouche virus. In August–September 2020, dengue-like syndrome developed in 41 patients in a remote rainforest village in French Guiana. By PCR or microneutralization, 23 (82.1%) of 28 tested patients were positive for Oropouche virus, documenting its emergence in French Guiana.
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10
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Flamand C, Bailly S, Fritzell C, Berthelot L, Vanhomwegen J, Salje H, Paireau J, Matheus S, Enfissi A, Fernandes-Pellerin S, Djossou F, Linares S, Carod JF, Kazanji M, Manuguerra JC, Cauchemez S, Rousset D. Impact of Zika Virus Emergence in French Guiana: A Large General Population Seroprevalence Survey. J Infect Dis 2020; 220:1915-1925. [PMID: 31418012 PMCID: PMC6834069 DOI: 10.1093/infdis/jiz396] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 08/01/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Since the identification of Zika virus (ZIKV) in Brazil in May 2015, the virus has spread throughout the Americas. However, ZIKV burden in the general population in affected countries remains unknown. METHODS We conducted a general population survey in the different communities of French Guiana through individual interviews and serologic survey during June-October 2017. All serum samples were tested for anti-ZIKV immunoglobulin G antibodies using a recombinant antigen-based SGERPAxMap microsphere immunoassay, and some of them were further evaluated through anti-ZIKV microneutralization tests. RESULTS The overall seroprevalence was estimated at 23.3% (95% confidence interval [CI], 20.9%-25.9%) among 2697 participants, varying from 0% to 45.6% according to municipalities. ZIKV circulated in a large majority of French Guiana but not in the most isolated forest areas. The proportion of reported symptomatic Zika infection was estimated at 25.5% (95% CI, 20.3%-31.4%) in individuals who tested positive for ZIKV. CONCLUSIONS This study described a large-scale representative ZIKV seroprevalence study in South America from the recent 2015-2016 Zika epidemic. Our findings reveal that the majority of the population remains susceptible to ZIKV, which could potentially allow future reintroductions of the virus.
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Affiliation(s)
| | | | | | - Léna Berthelot
- Arbovirus National Reference Center, Institut Pasteur, Cayenne, French Guiana
| | - Jessica Vanhomwegen
- Environment and Infectious Risks Unit, Unité Mixte de Recherche 2000, Centre National de la Recherche Scientifique, Paris, France
| | - Henrik Salje
- Mathematical Modelling of Infectious Diseases Unit, Unité Mixte de Recherche 2000, Centre National de la Recherche Scientifique, Paris, France
| | - Juliette Paireau
- Mathematical Modelling of Infectious Diseases Unit, Unité Mixte de Recherche 2000, Centre National de la Recherche Scientifique, Paris, France
| | - Séverine Matheus
- Arbovirus National Reference Center, Institut Pasteur, Cayenne, French Guiana.,Environment and Infectious Risks Unit, Unité Mixte de Recherche 2000, Centre National de la Recherche Scientifique, Paris, France
| | - Antoine Enfissi
- Arbovirus National Reference Center, Institut Pasteur, Cayenne, French Guiana
| | | | - Félix Djossou
- Infectious and Tropical Diseases Unit, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Sébastien Linares
- Geographic Information and Knowledge Dissemination Unit, Direction de l'Environnement, de l'Aménagement et du Logement Guyane, Cayenne, French Guiana
| | - Jean-François Carod
- Medical Laboratory, Centre Hospitalier de l'Ouest Guyanais, Saint-Laurent du Maroni, French Guiana
| | | | - Jean-Claude Manuguerra
- Environment and Infectious Risks Unit, Unité Mixte de Recherche 2000, Centre National de la Recherche Scientifique, Paris, France
| | - Simon Cauchemez
- Mathematical Modelling of Infectious Diseases Unit, Unité Mixte de Recherche 2000, Centre National de la Recherche Scientifique, Paris, France
| | - Dominique Rousset
- Arbovirus National Reference Center, Institut Pasteur, Cayenne, French Guiana
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11
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Sanna A, Andrieu A, Carvalho L, Mayence C, Tabard P, Hachouf M, Cazaux CM, Enfissi A, Rousset D, Kallel H. Yellow fever cases in French Guiana, evidence of an active circulation in the Guiana Shield, 2017 and 2018. Euro Surveill 2018; 23:1800471. [PMID: 30205871 PMCID: PMC6134805 DOI: 10.2807/1560-7917.es.2018.23.36.1800471] [Citation(s) in RCA: 8] [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: 08/25/2018] [Accepted: 09/06/2018] [Indexed: 12/02/2022] Open
Abstract
French Guiana (FG) is a French overseas region bordering Brazil and Suriname that is considered endemic for yellow fever (YF); vaccination is compulsory for residents and travellers. In August 2017 and 2018, two sporadic YF cases were notified 1 year apart, confirming that sylvatic YF virus circulation is active in the region. YF vaccination coverage should be closely monitored and improved in FG and neighbouring territories and clinicians should be aware of the risk.
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Affiliation(s)
- Alice Sanna
- Public health direction, Regional Health Agency (Agence régionale de santé Guyane), Cayenne, French Guiana
| | - Audrey Andrieu
- Regional Unit of Santé publique France (France's national public health agency), Cayenne, French Guiana
| | - Luisiane Carvalho
- Regional Unit of Santé publique France (France's national public health agency), Cayenne, French Guiana
| | | | - Philippe Tabard
- Public health direction, Regional Health Agency (Agence régionale de santé Guyane), Cayenne, French Guiana
| | - Marina Hachouf
- APHP-HUPNVS, Department of Anesthesiology and Critical Care, Beaujon Hospital, Clichy, France
| | - Claire-Marie Cazaux
- Public health direction, Regional Health Agency (Agence régionale de santé Guyane), Cayenne, French Guiana
| | - Antoine Enfissi
- National Reference Laboratory for Arboviruses, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Dominique Rousset
- National Reference Laboratory for Arboviruses, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Hatem Kallel
- Intensive Care Unit, Cayenne Hospital, French Guiana
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12
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Enfissi A, Joffret ML, Delaune D, Delpeyroux F, Rousset D, Bessaud M. Coxsackievirus A24 Variant Associated with Acute Haemorrhagic Conjunctivitis Cases, French Guiana, 2017. Intervirology 2018; 60:271-275. [DOI: 10.1159/000489339] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 04/17/2018] [Indexed: 12/14/2022] Open
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13
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Flamand C, Fritzell C, Matheus S, Dueymes M, Carles G, Favre A, Enfissi A, Adde A, Demar M, Kazanji M, Cauchemez S, Rousset D. The proportion of asymptomatic infections and spectrum of disease among pregnant women infected by Zika virus: systematic monitoring in French Guiana, 2016. ACTA ACUST UNITED AC 2018; 22. [PMID: 29113627 PMCID: PMC5710134 DOI: 10.2807/1560-7917.es.2017.22.44.17-00102] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Zika virus (ZIKV) infection has been associated with complications during pregnancy. Although the presence of symptoms might be a risk factor for complication, the proportion of ZIKV-infected pregnant women with symptoms remains unknown. Following the emergence of ZIKV in French Guiana, all pregnancies in the territory were monitored by RT-PCR and/or detection of ZIKV antibodies. Follow-up data collected during pregnancy monitoring interviews were analysed from 1 February to 1 June 2016. We enrolled 3,050 pregnant women aged 14–48 years and 573 (19%) had laboratory-confirmed ZIKV infection. Rash, arthralgia, myalgia and conjunctival hyperaemia were more frequently observed in ZIKV-positive women; 23% of them (95% confidence interval (CI): 20–27) had at least one symptom compatible with ZIKV infection. Women 30 years and older were significantly more likely to have symptoms than younger women (28% vs 20%). The proportion of symptomatic infections varied from 17% in the remote interior to 35% in the urbanised population near the coast (adjusted risk ratio: 1.6; 95% CI: 1.4–1.9.). These estimates put findings on cohorts of symptomatic ZIKV-positive pregnant women into the wider context of an epidemic with mainly asymptomatic infections. The proportion of symptomatic ZIKV infections appears to vary substantially between populations.
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Affiliation(s)
- Claude Flamand
- Epidemiology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Camille Fritzell
- Epidemiology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Séverine Matheus
- National Reference Center for arboviruses, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Maryvonne Dueymes
- Laboratory, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Gabriel Carles
- Gynaecology-Obstetrics Department, Centre Hospitalier de l'Ouest Guyanais, Saint-Laurent du Maroni, French Guiana
| | - Anne Favre
- Neonatology Department, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Antoine Enfissi
- National Reference Center for arboviruses, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Antoine Adde
- Epidemiology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Magalie Demar
- Laboratory, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Mirdad Kazanji
- Epidemiology unit, Institut Pasteur in French Guiana, Cayenne, French Guiana
| | - Simon Cauchemez
- These authors contributed equally to the study.,Center of Bioinformatics, Biostatistics and Integrative Biology, Institut Pasteur, Paris, France.,Centre National de la Recherche Scientifique, URA3012, Paris, France.,Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, Paris, France
| | - Dominique Rousset
- These authors contributed equally to the study.,National Reference Center for arboviruses, Institut Pasteur in French Guiana, Cayenne, French Guiana
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14
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Affiliation(s)
- Franck de Laval
- Military Center for Epidemiology and Public Health, Marseille, France
| | | | - Thomas Labrousse
- French Armed Forces Health Service in French Guiana, Cayenne, French Guiana
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15
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Ölschläger S, Enfissi A, Zaruba M, Kazanji M, Rousset D. Diagnostic Validation of the RealStar ® Zika Virus Reverse Transcription Polymerase Chain Reaction Kit for Detection of Zika Virus RNA in Urine and Serum Specimens. Am J Trop Med Hyg 2017; 97:1070-1071. [PMID: 28722641 DOI: 10.4269/ajtmh.17-0268] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
With the Zika virus outbreak in South America starting in 2015 and its potential to cause malformation of the fetus in infected women, the need for diagnostic methods became obvious. Until now, only limited data are available on the diagnostic performance of commercial kits. Here, we present data comparing the RealStar® Zika Virus RT-PCR Kit 1.0 for detection of Zika virus from 208 serum and urine samples collected in French Guiana with a reference method. Of these, 114 samples tested positive with the RealStar® Kit and 111 with the reference method.
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Affiliation(s)
| | - Antoine Enfissi
- Laboratoire de Virologie, CNR des Arbovirus, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | | | - Mirdad Kazanji
- Laboratoire de Virologie, CNR des Arbovirus, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Dominique Rousset
- Laboratoire de Virologie, CNR des Arbovirus, Institut Pasteur de la Guyane, Cayenne, French Guiana
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16
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Affiliation(s)
- Antoine Enfissi
- Institut Pasteur de la Guyane, Laboratoire de Virologie, Cayenne, French Guiana, France
| | | | | | - Mirdad Kazanji
- Institut Pasteur de la Guyane, Laboratoire de Virologie, Cayenne, French Guiana, France
| | - Dominique Rousset
- Institut Pasteur de la Guyane, Laboratoire de Virologie, Cayenne, French Guiana, France.
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17
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Stapleford KA, Moratorio G, Henningsson R, Chen R, Matheus S, Enfissi A, Weissglas-Volkov D, Isakov O, Blanc H, Mounce BC, Dupont-Rouzeyrol M, Shomron N, Weaver S, Fontes M, Rousset D, Vignuzzi M. Whole-Genome Sequencing Analysis from the Chikungunya Virus Caribbean Outbreak Reveals Novel Evolutionary Genomic Elements. PLoS Negl Trop Dis 2016; 10:e0004402. [PMID: 26807575 PMCID: PMC4726740 DOI: 10.1371/journal.pntd.0004402] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [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: 10/06/2015] [Accepted: 12/31/2015] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Chikungunya virus (CHIKV), an alphavirus and member of the Togaviridae family, is capable of causing severe febrile disease in humans. In December of 2013 the Asian Lineage of CHIKV spread from the Old World to the Americas, spreading rapidly throughout the New World. Given this new emergence in naïve populations we studied the viral genetic diversity present in infected individuals to understand how CHIKV may have evolved during this continuing outbreak. METHODOLOGY/PRINCIPLE FINDINGS We used deep-sequencing technologies coupled with well-established bioinformatics pipelines to characterize the minority variants and diversity present in CHIKV infected individuals from Guadeloupe and Martinique, two islands in the center of the epidemic. We observed changes in the consensus sequence as well as a diverse range of minority variants present at various levels in the population. Furthermore, we found that overall diversity was dramatically reduced after single passages in cell lines. Finally, we constructed an infectious clone from this outbreak and identified a novel 3' untranslated region (UTR) structure, not previously found in nature, that led to increased replication in insect cells. CONCLUSIONS/SIGNIFICANCE Here we preformed an intrahost quasispecies analysis of the new CHIKV outbreak in the Caribbean. We identified novel variants present in infected individuals, as well as a new 3'UTR structure, suggesting that CHIKV has rapidly evolved in a short period of time once it entered this naïve population. These studies highlight the need to continue viral diversity surveillance over time as this epidemic evolves in order to understand the evolutionary potential of CHIKV.
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Affiliation(s)
- Kenneth A. Stapleford
- Institut Pasteur, Centre National de la Recherche Scientifique UMR 3569, Viral Populations and Pathogenesis Unit, Paris, France
| | - Gonzalo Moratorio
- Institut Pasteur, Centre National de la Recherche Scientifique UMR 3569, Viral Populations and Pathogenesis Unit, Paris, France
| | - Rasmus Henningsson
- Institut Pasteur, Centre National de la Recherche Scientifique UMR 3569, Viral Populations and Pathogenesis Unit, Paris, France
- Institut Pasteur, International Group for Data Analysis, Paris, France
| | - Rubing Chen
- Center for Tropical Diseases and Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Séverine Matheus
- Institut Pasteur de la Guyane, Laboratoire de Virologie, Centre National de Référence des Arbovirus, Cayenne, French Guiana
| | - Antoine Enfissi
- Institut Pasteur de la Guyane, Laboratoire de Virologie, Centre National de Référence des Arbovirus, Cayenne, French Guiana
| | | | - Ofer Isakov
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Hervé Blanc
- Institut Pasteur, Centre National de la Recherche Scientifique UMR 3569, Viral Populations and Pathogenesis Unit, Paris, France
| | - Bryan C. Mounce
- Institut Pasteur, Centre National de la Recherche Scientifique UMR 3569, Viral Populations and Pathogenesis Unit, Paris, France
| | - Myrielle Dupont-Rouzeyrol
- Institut Pasteur de Nouvelle-Calédonie, Research and Expertise Unit on Dengue and other Arboviruses, Noumea, New Caledonia
| | - Noam Shomron
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Scott Weaver
- Center for Tropical Diseases and Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Magnus Fontes
- Institut Pasteur, International Group for Data Analysis, Paris, France
| | - Dominique Rousset
- Institut Pasteur de la Guyane, Laboratoire de Virologie, Centre National de Référence des Arbovirus, Cayenne, French Guiana
| | - Marco Vignuzzi
- Institut Pasteur, Centre National de la Recherche Scientifique UMR 3569, Viral Populations and Pathogenesis Unit, Paris, France
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De Decker S, Vray M, Sistek V, Labeau B, Enfissi A, Rousset D, Matheus S. Evaluation of the diagnostic accuracy of a new dengue IgA capture assay (Platelia Dengue IgA Capture, Bio-Rad) for dengue infection detection. PLoS Negl Trop Dis 2015; 9:e0003596. [PMID: 25803718 PMCID: PMC4372552 DOI: 10.1371/journal.pntd.0003596] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 09/09/2014] [Accepted: 02/05/2015] [Indexed: 11/19/2022] Open
Abstract
Considering the short lifetime of IgA antibodies in serum and the key advantages of antibody detection ELISAs in terms of sensitivity and specificity, Bio-Rad has just developed a new ELISA test based on the detection of specific anti-dengue IgA. This study has been carried out to assess the performance of this Platelia Dengue IgA Capture assay for dengue infection detection. A total of 184 well-characterized samples provided by the French Guiana NRC sera collection (Laboratory of Virology, Institut Pasteur in French Guiana) were selected among samples collected between 2002 and 2013 from patients exhibiting a dengue-like syndrome. A first group included 134 sera from confirmed dengue-infected patients, and a second included 50 sera from non-dengue infected patients, all collected between day 3 and day 15 after the onset of fever. Dengue infection diagnoses were all confirmed using reference assays by direct virological identification using RT-PCR or virus culture on acute sera samples or on paired acute-phase sera samples of selected convalescent sera. This study revealed: i) a good overall sensitivity and specificity of the IgA index test, i.e., 93% and 88% respectively, indicating its good correlation to acute dengue diagnosis; and ii) a good concordance with the Panbio IgM capture ELISA. Because of the shorter persistence of dengue virus-specific IgA than IgM, these results underlined the relevance of this new test, which could significantly improve dengue diagnosis accuracy, especially in countries where dengue virus is (hyper-) endemic. It would allow for additional refinement of dengue diagnostic strategy.
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Affiliation(s)
- Sophie De Decker
- Institut Pasteur, Laboratoire de Virologie, Cayenne, Guyane Française
| | - Muriel Vray
- Institut Pasteur, Epidémiologie des Maladies Emergentes, Paris, France
| | - Viridiana Sistek
- Institut Pasteur, Laboratoire de Virologie, Cayenne, Guyane Française
| | - Bhety Labeau
- Institut Pasteur, Laboratoire de Virologie, Cayenne, Guyane Française
| | - Antoine Enfissi
- Institut Pasteur, Laboratoire de Virologie, Cayenne, Guyane Française
| | - Dominique Rousset
- Institut Pasteur, Laboratoire de Virologie, Cayenne, Guyane Française
| | - Séverine Matheus
- Institut Pasteur, Laboratoire de Virologie, Cayenne, Guyane Française
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Guyon A, Conductier G, Rovere C, Enfissi A, Nahon JL. Melanin-concentrating hormone producing neurons: Activities and modulations. Peptides 2009; 30:2031-9. [PMID: 19524001 DOI: 10.1016/j.peptides.2009.05.028] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2009] [Revised: 03/25/2009] [Accepted: 05/25/2009] [Indexed: 10/20/2022]
Abstract
Regulation of energy homeostasis in animals involves adaptation of energy intake to its loss, through a perfect regulation of feeding behavior and energy storage/expenditure. Factors from the periphery modulate brain activity in order to adjust food intake as needed. Particularly, "first order" neurons from arcuate nucleus are able to detect modifications in homeostatic parameters and to transmit information to "second order" neurons, partly located in the lateral hypothalamic area. These "second order" neurons have widespread projections throughout the brain and their proper activation leads them to a coordinated response associated to an adapted behavior. Among these neurons, melanin-concentrating hormone (MCH) expressing neurons play an integrative role of the various factors arising from periphery, first order neurons and extra-hypothalamic arousal systems neurons and modulate regulation of feeding, drinking and seeking behaviors. As regulation of MCH release is correlated to regulation of MCH neuronal activity, we focused this review on the electrophysiological properties of MCH neurons from the lateral hypothalamic area. We first reviewed the knowledge on the endogenous electrical properties of MCH neurons identified according to various criteria which are described. Then, we dealt with the modulations of the electrical activity of MCH neurons by different factors such as glucose, glutamate and GABA, peptides and hormones regulating feeding and transmitters of extra-hypothalamic arousal systems. Finally, we described the current knowledge on the modulation of MCH neuronal activity by cytokines and chemokines. Because of such regulation, MCH neurons are some of the best candidate to account for infection-induced anorexia, but also obesity.
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Affiliation(s)
- Alice Guyon
- Institut de Pharmacologie Moléculaire et Cellulaire, Univrsité de Nice-Sophia Antipolis, Centre National de la Recherche Scientifique, Valbonne, France.
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El Boustany C, Bidaux G, Enfissi A, Delcourt P, Prevarskaya N, Capiod T. Capacitative calcium entry and transient receptor potential canonical 6 expression control human hepatoma cell proliferation. Hepatology 2008; 47:2068-77. [PMID: 18506892 DOI: 10.1002/hep.22263] [Citation(s) in RCA: 164] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
UNLABELLED Store-operated calcium entry (SOCE) is the main Ca(2+) influx pathway involved in controlling proliferation of the human hepatoma cell lines Huh-7 and HepG2. However, the molecular nature of the calcium channels involved in this process remains unknown. Huh-7 and HepG2 cells express transient receptor potential canonical 1 (TRPC1) and TRPC6, as well as STIM1 and Orai1, and these 4 channels are the most likely candidates to account for the SOCE in these cells. We generated stable TRPC6-overexpressing or TRPC6-knockdown Huh-7 clones, in which we investigated correlations between the presence of the protein, the rate of cell proliferation, and SOCE amplitude. TRPC6-overexpressing Huh-7 cells proliferated 80% faster than did untransfected cells and their SOCE amplitude was 160% higher. By contrast, proliferation rate was 50% lower and SOCE amplitude 85% lower in TRPC6-knockdown clones than in untransfected cells. OAG (olyl acetyl glycerol)-induced calcium entry was similar in all cells, and small interfering RNA (siRNA) against TRPC1 had no effect on SOCE amplitude, highlighting the relationship among SOCE, TRPC6 and cell proliferation in Huh-7 cells. SOCE amplitude was reduced by STIM1 and Orai1 knockdowns, suggesting possible cooperation between these proteins and TRPC6 in these cells. Endothelial growth factor and hepatocyte growth factor increased TRPC6 expression and SOCE amplitude in Huh-7 cells, and cyclin D1 expression was decreased by STIM1, Orai1, and TRPC6 knockdowns. CONCLUSION TRPC6 was very weakly expressed in isolated hepatocytes from healthy patients and expressed more strongly in tumoral samples from the liver of a cancer patient, strongly supporting a role for these calcium channels in liver oncogenesis.
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Affiliation(s)
- Charbel El Boustany
- Institut National de Santé et recherche Médicale (INSERM), U800, IFR143, Université Sciences et Technologies Lille 1, F-59655, Villeneuve d'Ascq, France
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21
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Mignen O, Brink C, Enfissi A, Nadkarni A, Shuttleworth TJ, Giovannucci DR, Capiod T. Carboxyamidotriazole-induced inhibition of mitochondrial calcium import blocks capacitative calcium entry and cell proliferation in HEK-293 cells. J Cell Sci 2005; 118:5615-23. [PMID: 16306224 DOI: 10.1242/jcs.02663] [Citation(s) in RCA: 52] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Blocking calcium entry may prevent normal and pathological cell proliferation. There is evidence suggesting that molecules such as carboxyamidotriazole, widely used in anti-cancer therapy based on its ability to block calcium entry in nonexcitable cells, also have antiproliferative properties. We found that carboxyamidotriazole and the capacitative calcium entry blocker 2-aminoethoxydiphenyl borate inhibited proliferation in HEK-293 cells with IC50 values of 1.6 and 50 μM, respectively. Capacitative calcium entry is activated as a result of intracellular calcium store depletion. However, non-capacitative calcium entry pathways exist that are independent of store depletion and are activated by arachidonic acid and diacylglycerol, generated subsequent to G protein coupled receptor stimulation. We found that carboxyamidotriazole completely inhibited the capacitative calcium entry and had no effect on the amplitude of arachidonic-acid-activated non-capacitative calcium entry. However, investigation of the effects of carboxyamidotriazole on mitochondrial calcium dynamics induced by carbachol, capacitative calcium entry and exogenously set calcium loads in intact and digitonin-permeabilized cells revealed that carboxyamidotriazole inhibited both calcium entry and mitochondrial calcium uptake in a time-dependent manner. Mitochondrial inner-membrane potential was altered by carboxyamidotriazole treatment, suggesting that carboxyamidotriazole antagonizes mitochondrial calcium import and thus local calcium clearance, which is crucial for the maintenance of capacitative calcium entry.
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Affiliation(s)
- Olivier Mignen
- Department of Pharmacology and Physiology, University of Rochester, 601 Elmwood Avenue, Rochester, NY 14642, USA
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22
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Thebault S, Zholos A, Enfissi A, Slomianny C, Dewailly E, Roudbaraki M, Parys J, Prevarskaya N. Receptor-operated Ca2+ entry mediated by TRPC3/TRPC6 proteins in rat prostate smooth muscle (PS1) cell line. J Cell Physiol 2005; 204:320-8. [PMID: 15672411 DOI: 10.1002/jcp.20301] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Prostate smooth muscle cells predominantly express alpha1-adrenoceptors (alpha1-AR). alpha1-AR antagonists induce prostate smooth muscle relaxation and therefore they are useful therapeutic compounds for the treatment of benign prostatic hyperplasia symptoms. However, the Ca(2+) entry pathways associated with the activation of alpha1-AR in the prostate have yet to be elucidated. In many cell types, mammalian homologues of transient receptor potential (TRP) genes, first identified in Drosophila, encode TRPC (canonical TRP) proteins. They function as receptor-operated channels (ROCs) which are involved in various physiological processes such as contraction, proliferation, apoptosis, and differentiation. To date, the expression and function of TRPC channels have not been studied in prostate smooth muscle. In fura-2 loaded PS1 (a prostate smooth muscle cell line) which express endogenous alpha1A-ARs, alpha-agonists epinephrine (EPI), and phenylephrine (PHE) induced Ca(2+) influx which depended on the extracellular Ca(2+) and PLC activation but was independent of PKC activation. Thus, we have tested two membrane-permeable analogues of diacylglycerol (DAG), oleoyl-acyl-sn-glycerol (OAG) and 1,2-dioctanoyl-sn-glycerol (DOG). They initiated Ca(2+) influx whose properties were similar to those induced by the alpha-agonists. Sensitivity to 2-aminoethyl diphenylborate (2-APB), SKF-96365 and flufenamate implies that Ca(2+)-permeable channels mediated both alpha-agonist- and OAG-evoked Ca(2+) influx. Following the sarcoplasmic reticulum (SR) Ca(2+) store depletion by thapsigargin (Tg), a SERCA inhibitor, OAG and PHE were both still able to activate Ca(2+) influx. However, OAG failed to enhance Ca(2+) influx when added in the presence of an alpha-agonist. RT-PCR and Western blotting performed on PS1 cells revealed the presence of mRNAs and the corresponding TRPC3 and TRPC6 proteins. Experiments using an antisense strategy showed that both alpha-agonist- and OAG-induced Ca(2+) influx required TRPC3 and TRPC6, whereas the Tg-activated ("capacitative") Ca(2+) entry involved only TRPC3 encoded protein. It may be thus concluded that PS1 cells express TRPC3 and TRPC6 proteins which function as receptor- and store-operated Ca(2+) entry pathways.
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Affiliation(s)
- S Thebault
- Laboratoire de Physiologie Cellulaire, INSERM EMI 0228, France
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23
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Enfissi A, Prigent S, Colosetti P, Capiod T. The blocking of capacitative calcium entry by 2-aminoethyl diphenylborate (2-APB) and carboxyamidotriazole (CAI) inhibits proliferation in Hep G2 and Huh-7 human hepatoma cells. Cell Calcium 2005; 36:459-67. [PMID: 15488595 DOI: 10.1016/j.ceca.2004.04.004] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [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: 01/30/2004] [Revised: 03/25/2004] [Accepted: 04/20/2004] [Indexed: 11/30/2022]
Abstract
Calcium entry is a component of the processes regulating the proliferative phenotype of some types of cancer. In non-excitable cells, capacitative calcium entry (CCE) and non-capacitative calcium entry (NCCE) are thought to be the main pathways of Ca2+ influx into cells. Thus, blocking calcium entry may prevent normal and pathological cell proliferation and there is evidence to suggest that molecules blocking calcium entry also have antiproliferative properties. Carboxyamidotriazole (CAI), a novel inhibitor of the non-voltage-dependent calcium entry has been shown to have such properties in model systems in vitro and in vivo. We used Hep G2 and Huh-7 human hepatoma cells to investigate the effects of calcium entry blockers on cell proliferation. CAI (10 microM) and 2-APB (20 microM) completely blocked CCE in thapsigargin-treated Huh-7, and CAI and 2-APB inhibited cell proliferation with IC50 of 4.5 and 43 microM, respectively. The plateau phase of the [Ca2+]i increases triggered by 10% FCS were abolished in the absence of external Ca2+ and in the presence of CAI or 2-APB. We, therefore, suggest that CCE is the main pathway involved in regulation of the processes leading to cell proliferation.
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Affiliation(s)
- Antoine Enfissi
- INSERM U442, IFR-46, Université Paris-Sud, Bât. 443, 91405 Orsay Cedex, France
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