Trobicúlidos y trombiculiasis en La Rioja

Trombiculid mites, also known as chiggers, belong to Family Trombiculidae and are worldwide distributed. Some genera have medical and veterinary importance. In America and Europe they are associated with seasonal pruriginous dermatitis (trombiculiasis). In Southeast Asia and Pacific Islands they are...

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Autor principal:	Santibáñez Sáenz, Paula
Otros Autores:	Oteo Revuelta, José Antonio (Universidad de La Rioja)
Formato:	text (thesis)
Lenguaje:	spa
Publicado:	Universidad de La Rioja (España) 2015
Acceso en línea:	https://dialnet.unirioja.es/servlet/oaites?codigo=46014
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description	Trombiculid mites, also known as chiggers, belong to Family Trombiculidae and are worldwide distributed. Some genera have medical and veterinary importance. In America and Europe they are associated with seasonal pruriginous dermatitis (trombiculiasis). In Southeast Asia and Pacific Islands they are recognized vectors of scrub typhus. The potential role of trombiculid mites in the transmission of other infectious diseases is unknown. The objectives of this study were: 1) Description of the epidemiology of trombiculiasis in La Rioja; 2) Identification of the etiological agent and study of its life cycle; 3) Investigation of the presence of Rickettsia spp., Anaplasma phagocytophilum, Borrelia spp., Coxiella burnetii, Bartonella spp. and Orientia tsutsugamushi in chiggers, and 4) Clinical characterization of trombiculiasis in La Rioja. Our data have shown the coincidence between the seasonality of human and canine cases of trombiculiasis and the presence of larvae over vegetation in well-defined areas from La Rioja. N. inopinata has been described for the first time in Spain. The identification of this trombiculid species in the same season and area where trombiculiasis cases occurred, epidemiologically involves N. inopinata as the etiological agent of this condition. In the studied area, N. inopinata larvae were detected over vegetation since mid-summer to the end of autumn. Furthermore, in spring, adult trombiculid mites belonging to the same species were found in the soil. Trombiculid larvae removed from potentially migratory birds were classified as N. inopinata. In our environment, there is no evidence of Rickettsia spp., A. phagocytophilum, Borrelia spp., C. burnetii, Bartonella spp. or O. tsutsugamushi infection in trombiculid larvae. Nevertheless, their role in human and canine trombiculiasis has to be taken into account as a Public Health concern. People parasitized with trombiculid mites suffer from very disturbing pruriginous dermatitis, whereas massive parasitation in dogs lead to severe clinical pictures reaching sometimes a fatal outcome. To avoid contact with vegetation in periods of time and areas where the presence of trombiculid larvae has been documented is the only effective preventive measure against trombiculiasis. Therefore, preventive strategies to inform the population about the risk of trombiculiasis in La Rioja should be established.
author2	Oteo Revuelta, José Antonio (Universidad de La Rioja)
author_facet	Oteo Revuelta, José Antonio (Universidad de La Rioja) Santibáñez Sáenz, Paula
format	text (thesis)
author	Santibáñez Sáenz, Paula
spellingShingle	Santibáñez Sáenz, Paula Trobicúlidos y trombiculiasis en La Rioja
author_sort	Santibáñez Sáenz, Paula
title	Trobicúlidos y trombiculiasis en La Rioja
title_short	Trobicúlidos y trombiculiasis en La Rioja
title_full	Trobicúlidos y trombiculiasis en La Rioja
title_fullStr	Trobicúlidos y trombiculiasis en La Rioja
title_full_unstemmed	Trobicúlidos y trombiculiasis en La Rioja
title_sort	trobicúlidos y trombiculiasis en la rioja
publisher	Universidad de La Rioja (España)
publishDate	2015
url	https://dialnet.unirioja.es/servlet/oaites?codigo=46014
work_keys_str_mv	AT santibanezsaenzpaula trobiculidosytrombiculiasisenlarioja
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spelling	oai-TES00000085642019-07-14Trobicúlidos y trombiculiasis en La RiojaSantibáñez Sáenz, PaulaTrombiculid mites, also known as chiggers, belong to Family Trombiculidae and are worldwide distributed. Some genera have medical and veterinary importance. In America and Europe they are associated with seasonal pruriginous dermatitis (trombiculiasis). In Southeast Asia and Pacific Islands they are recognized vectors of scrub typhus. The potential role of trombiculid mites in the transmission of other infectious diseases is unknown. The objectives of this study were: 1) Description of the epidemiology of trombiculiasis in La Rioja; 2) Identification of the etiological agent and study of its life cycle; 3) Investigation of the presence of Rickettsia spp., Anaplasma phagocytophilum, Borrelia spp., Coxiella burnetii, Bartonella spp. and Orientia tsutsugamushi in chiggers, and 4) Clinical characterization of trombiculiasis in La Rioja. Our data have shown the coincidence between the seasonality of human and canine cases of trombiculiasis and the presence of larvae over vegetation in well-defined areas from La Rioja. N. inopinata has been described for the first time in Spain. The identification of this trombiculid species in the same season and area where trombiculiasis cases occurred, epidemiologically involves N. inopinata as the etiological agent of this condition. In the studied area, N. inopinata larvae were detected over vegetation since mid-summer to the end of autumn. Furthermore, in spring, adult trombiculid mites belonging to the same species were found in the soil. Trombiculid larvae removed from potentially migratory birds were classified as N. inopinata. In our environment, there is no evidence of Rickettsia spp., A. phagocytophilum, Borrelia spp., C. burnetii, Bartonella spp. or O. tsutsugamushi infection in trombiculid larvae. Nevertheless, their role in human and canine trombiculiasis has to be taken into account as a Public Health concern. People parasitized with trombiculid mites suffer from very disturbing pruriginous dermatitis, whereas massive parasitation in dogs lead to severe clinical pictures reaching sometimes a fatal outcome. To avoid contact with vegetation in periods of time and areas where the presence of trombiculid larvae has been documented is the only effective preventive measure against trombiculiasis. Therefore, preventive strategies to inform the population about the risk of trombiculiasis in La Rioja should be established.Los trombicúlidos son ácaros de distribución mundial pertenecientes a la familia Trombiculidae. Algunos géneros tienen gran importancia en medicina humana y veterinaria. En América y Europa se asocian a cuadros clínicos de dermatitis pruriginosas estacionales (trombiculiasis). En el Sudeste Asiático e Islas del Pacífico son los vectores reconocidos del tifus de los matorrales. Su potencial papel en la transmisión de otras enfermedades infecciosas se desconoce. Los objetivos de este trabajo fueron: 1) Descripción de la epidemiología de la trombiculiasis en La Rioja; 2) Identificación del agente causal y su ciclo biológico; 3) Estudio de la presencia de Rickettsia spp., Anaplasma phagocytophilum, Borrelia spp., Coxiella burnetii, Bartonella spp. y Orientia tsutsugamushi en trombicúlidos y 4) Descripción clínica de la trombiculiasis en La Rioja. Nuestros datos han puesto de manifiesto la coincidencia de la estacionalidad de los cuadros de trombiculiasis humana y canina con la presencia de larvas de trombicúlidos en la vegetación de zonas definidas en La Rioja. Se ha descrito la presencia de N. inopinata por primera vez en España. La identificación de esta especie de trombicúlidos en la época y lugar donde se producían los casos de trombiculiasis, implica epidemiológicamente a N. inopinata como agente causal de esta afección. En la zona de estudio, se encontraron larvas de N. inopinata en la vegetación desde mediados de verano hasta finales de otoño. Los ejemplares adultos de esta misma especie se detectaron en el suelo durante la primavera. Las larvas de trombicúlidos retiradas de aves, potencialmente migratorias, se clasificaron también como N. inopinata. En nuestro medio, no tenemos evidencia de que los trombicúlidos estén infectados por Rickettsia spp., A. phagocytophilum, Borrelia spp., C. burnetii, Bartonella spp. ni O. tsutsugamushi. No obstante, su papel como causantes de trombiculiasis humanas y caninas ha de ser tenido en cuenta desde el punto de vista de la Salud Pública. En las personas, los trombicúlidos producen cuadros clínicos molestos de dermatitis muy pruriginosas, mientras que los perros sufren parasitaciones masivas con procesos graves que pueden llegar a ser fatales. La única medida de prevención eficaz es evitar el contacto con la vegetación en aquellas zonas donde se ha documentado la presencia de trombicúlidos. Por tanto, se deben impulsar campañas que informen a la población del riesgo de sufrir trombiculiasis en La Rioja.Universidad de La Rioja (España)Oteo Revuelta, José Antonio (Universidad de La Rioja)Portillo Barrio, Aránzazu (Universidad de La Rioja)2015text (thesis)application/pdfhttps://dialnet.unirioja.es/servlet/oaites?codigo=46014spaLICENCIA DE USO: Los documentos a texto completo incluidos en Dialnet son de acceso libre y propiedad de sus autores y/o editores. 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Any link to this document should be made using its official URL in Dialnet. More info: https://dialnet.unirioja.es/info/derechosOAI

Trobicúlidos y trombiculiasis en La Rioja

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