Browsing by Autor "Amandine Cournil"

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    Hair Trace Elements Concentration to Describe Polymetallic Mining Waste Exposure in Bolivian Altiplano
    (Springer Science+Business Media, 2010) F. Barbieri; Amandine Cournil; Jorge Eduardo de Souza Sarkis; Eric Bénéfice; Jacques Gardon
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    Human Antibody Response to Aedes aegypti Saliva in an Urban Population in Bolivia: A New Biomarker of Exposure to Dengue Vector Bites
    (American Society of Tropical Medicine and Hygiene, 2012) Souleymane Doucouré; François Mouchet; Amandine Cournil; Gilbert Le Goff; Sylvie Cornélie; Yelin Roca; Mabel Guerra Giraldez; Z. Barja Simon; Roxana Loayza; Dorothée Missé
    Aedes mosquitoes are important vectors of re-emerging diseases in developing countries, and increasing exposure to Aedes in the developed world is currently a source of concern. Given the limitations of current entomologic methods, there is a need for a new effective way for evaluating Aedes exposure. Our objective was to evaluate specific antibody responses to Aedes aegypti saliva as a biomarker for vector exposure in a dengue-endemic urban area. IgG responses to saliva were strong in young children and steadily waned with age. Specific IgG levels were significantly higher in persons living in sites with higher Ae. aegypti density, as measured by using entomologic parameters. Logistic regression showed a significant correlation between IgG to saliva and exposure level, independently of either age or sex. These results suggest that antibody responses to saliva could be used to monitor human exposure to Aedes bites.
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    Mercury exposure in a high fish eating Bolivian Amazonian population with intense small-scale gold-mining activities
    (Taylor & Francis, 2009) F. Barbieri; Amandine Cournil; Jacques Gardon
    Methylmercury exposure in Amazonian communities through fish consumption has been widely documented in Brazil. There is still a lack of data in other Amazonian countries, which is why we conducted this study in the Bolivian Amazon basin. Simple random sampling was used from a small village located in the lower Beni River, where there is intense gold mining and high fish consumption. All participants were interviewed and hair samples were taken to measure total mercury concentrations. The hair mercury geometric mean in the general population was 3.02 microg/g (CI: 2.69-3.37; range: 0.42-15.65). Age and gender were not directly associated with mercury levels. Fish consumption showed a positive relation and so did occupation, especially small-scale gold mining. Hair mercury levels were lower than those found in Brazilian studies, but still higher than in non-exposed populations. It is necessary to assess mercury exposure in the Amazonian regions where data is still lacking, using a standardized indicator.
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    Réponse IgG spécifique à la salive d’Aedes aegypti dans une population urbaine bolivienne : vers un nouveau biomarqueur d’exposition aux piqûres du vecteur de la dengue ?
    (Centre National de la Recherche Scientifique, 2009) François Mouchet; Amandine Cournil; Souliman Doucouré; Gilbert Le Goff; Sylvie Cornélie; Yelin Roca; Mabel Guerra-Giraldez; Norman Valdez-Zamorano; Zaira Barja-Simon; Roxana Loayza
    International audience