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1.
J Wildl Dis ; 53(4): 850-853, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28715291

RESUMO

Brucella infection in seals was reported for the first time in 1994 around the coast of Scotland. Since then, marine mammal Brucella infections were found to be widely distributed in the northern hemisphere. Two Brucella species affect marine mammals: Brucella pinnipedialis in pinnipeds and Brucella ceti in cetaceans. We examined the livers of Baltic grey seals (Halichoerus grypus) from the Finnish coast (n=122) hunted, found dead, or killed as by-catch in fishing gear in 2013-15 as part of population health monitoring. We detected B. pinnipedialis in the livers of three grey seals. The bacterium was isolated from livers displaying parasitic cholangitis. We also detected Brucella DNA in liver flukes (Pseudamphistomum truncatum) obtained from a Brucella-infected grey seal, suggesting that flukes might be possible vectors of this pathogen in the marine environment.


Assuntos
Brucella/isolamento & purificação , Brucelose/veterinária , Focas Verdadeiras , Distribuição por Idade , Animais , Técnicas de Tipagem Bacteriana/veterinária , Brucella/classificação , Brucelose/complicações , Brucelose/microbiologia , DNA Bacteriano/classificação , DNA Bacteriano/isolamento & purificação , Fasciola hepatica/microbiologia , Fasciolíase/complicações , Fasciolíase/veterinária , Feminino , Finlândia , Fígado/microbiologia , Fígado/parasitologia , Fígado/patologia , Masculino , Mar do Norte , Polimorfismo de Fragmento de Restrição , Distribuição por Sexo
2.
PLoS Genet ; 13(1): e1006537, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-28060841

RESUMO

Food borne trematodes (FBTs) are an assemblage of platyhelminth parasites transmitted through the food chain, four of which are recognized as neglected tropical diseases (NTDs). Fascioliasis stands out among the other NTDs due to its broad and significant impact on both human and animal health, as Fasciola sp., are also considered major pathogens of domesticated ruminants. Here we present a reference genome sequence of the common liver fluke, Fasciola hepatica isolated from sheep, complementing previously reported isolate from cattle. A total of 14,642 genes were predicted from the 1.14 GB genome of the liver fluke. Comparative genomics indicated that F. hepatica Oregon and related food-borne trematodes are metabolically less constrained than schistosomes and cestodes, taking advantage of the richer millieux offered by the hepatobiliary organs. Protease families differentially expanded between diverse trematodes may facilitate migration and survival within the heterogeneous environments and niches within the mammalian host. Surprisingly, the sequencing of Oregon and Uruguay F. hepatica isolates led to the first discovery of an endobacteria in this species. Two contigs from the F. hepatica Oregon assembly were joined to complete the 859,205 bp genome of a novel Neorickettsia endobacterium (nFh) closely related to the etiological agents of human Sennetsu and Potomac horse fevers. Immunohistochemical studies targeting a Neorickettsia surface protein found nFh in specific organs and tissues of the adult trematode including the female reproductive tract, eggs, the Mehlis' gland, seminal vesicle, and oral suckers, suggesting putative routes for fluke-to-fluke and fluke-to-host transmission. The genomes of F. hepatica and nFh will serve as a resource for further exploration of the biology of F. hepatica, and specifically its newly discovered trans-kingdom interaction with nFh and the impact of both species on disease in ruminants and humans.


Assuntos
Fasciola hepatica/genética , Genoma Bacteriano , Genoma Helmíntico , Neorickettsia sennetsu/genética , Animais , Proteínas da Membrana Bacteriana Externa/genética , Ehrlichiose/microbiologia , Ehrlichiose/transmissão , Ehrlichiose/veterinária , Fasciola hepatica/isolamento & purificação , Fasciola hepatica/microbiologia , Doenças dos Cavalos/microbiologia , Doenças dos Cavalos/transmissão , Cavalos , Humanos , Neorickettsia sennetsu/patogenicidade , Oregon , Ovinos/parasitologia , Uruguai
3.
Parasitol Res ; 110(2): 663-7, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21773773

RESUMO

Fasciolosis is a disease caused by Fasciola hepatica responsible for causing significant losses in livestock. This study aimed to evaluate the Pochonia chlamydosporia fungus (isolate VC1) on F. hepatica eggs after passing through the cattle gastrointestinal tract. For this evaluation, 1 g pellet was given in sodium alginate matrix per kilogram live weight containing 25% of fungal mycelium from isolate VC1 per animal. Twelve animals were used, six treated and six untreated (control). Some stool samples were collected from the groups of treated and control animals, at the times of 12, 18, 24, 48, 72, and 96 h after the pellets' administration. Then, from each stool sample of treated and control groups, 2 g was placed in a Petri dish of 9 cm in diameter, containing 2% water-agar and 1,000 eggs of F. hepatica. It was observed that the fungus was effective in preying upon the eggs in the samples recovered at all of the schedules starting at 12 h. Furthermore, differences were observed (p < 0.01) in the destruction of eggs in the Petri dishes in the treated group compared with the control group. The ovicidal effect was observed after 7 days of interaction. The ovicidal P. chlamydosporia fungus was effective in destroying F. hepatica eggs; therefore, it is suggested that this fungus could be employed as agent for the control of helminth eggs.


Assuntos
Fasciola hepatica/crescimento & desenvolvimento , Fasciola hepatica/microbiologia , Hypocreales/crescimento & desenvolvimento , Hypocreales/patogenicidade , Óvulo/crescimento & desenvolvimento , Óvulo/microbiologia , Controle Biológico de Vetores/métodos , Animais , Bovinos , Fezes/parasitologia , Trato Gastrointestinal/parasitologia , Análise de Sobrevida
4.
Rev. cuba. med. trop ; 62(1)ene.-abr. 2010.
Artigo em Espanhol | CUMED | ID: cum-52975

RESUMO

INTRODUCCIÓN: se realizaron estudios ecológicos sobre las poblaciones de moluscos de importancia médico-veterinaria con énfasis en las especies hospederas de Fasciola hepatica. OBJETIVOS: determinar la abundancia relativa de las poblaciones, así como el posible uso de algunas especies competidoras en el control biológico de hospederos intermediarios de Fasciola hepatica. MÉTODOS: se muestrearon 13 cuerpos de agua dulce durante el período marzo-noviembre de 2008 utilizando el método de captura por unidad de esfuerzo para la colecta de los moluscos. RESULTADOS: por medio de los muestreos se identificaron 13 especies de moluscos dulceacuícolas pertenecientes a las clases Gastropoda (12) y Bilvalvia (1). Las abundancias relativas de las especies presentaron variaciones según el tipo de hßbitat. Las especies hospederas intermediarias de fasciolosis predominaron en 2 de los sitios de muestreo. Fossaria cubensis fue dominante en la localidad del Canal de la Entrada, a pesar de estar presente Melanoides tuberculata, posible control biológico. Pseudosuccinea columella fue más abundante en la localidad de Los Mangos. En La Presa del Matadero y Las Palmas, a pesar de estar presente estas especies, las que predominaron fueron Physa acuta y algunos planórbidos. CONCLUSIONES: se identificaron los sitios donde están presentes los hospederos de Fasciola hepatica, con datos de su distribución y abundancia relativa. En algunos sitios Melanoides tuberculata actúa como control biológico y en otros no, por lo que habría que evaluar el uso de otros tiáridos para poder controlar estas especies(AU)


INTRODUCTION: ecological studies were carried out on mollusk populations of medical and veterinary importance with emphasis on Fasciola hepatica intermediary hosts species. OBJECTIVES: to determine the relative abundance of populations and the possible use of some species as biological control agents against F. hepatica intermediary hosts. METHODS: a total of 13 freshwater bodies were sampled during March and November, 2008 using Capture by effort unit method to capture the mollusks RESULTS: thirteen mollusk species (12 gastropods and 1 bivalve) were found after sampling. The relative abundance of species varied in different types of habitat. The intermediary host species of fascioliasis were dominant in two sites. Fossaria cubensis was dominant in Canal de la Entrada despite the presence of Melanoides tuberculata. The specie Pseudosuccinea columella was more abundant in Los Mangos. In La Presa del Matadero y Las Palmas despite the presence of these species, the prevailing ones were Physa acuta and some planorbids. CONCLUSIONS: the sites where intermediary hosts of Fasciola hepatica predominated were identified through data on the distribution and relative abundance. In some sites Melanoides tuberculata was present and acted as a biological control agent but it did not in others. Therefore, an evaluation on using a different thiarid would be useful to control these species(AU)


Assuntos
Ecologia , Fasciola hepatica/microbiologia , Moluscos
5.
Rev. cuba. med. trop ; 61(2)mayo-ago. 2009.
Artigo em Espanhol | CUMED | ID: cum-52897

RESUMO

INTRODUCCIÓN: la fasciolosis en Cuba es una enfermedad endémica en el ganado y en los últimos años ha tenido un incremento en el número de casos reportados en humanos. OBJETIVOS: por causa de las dificultades para realizar el diagnóstico de esta enfermedad en zonas rurales o alejadas del laboratorio se ha hecho necesario buscar soluciones preservantes, que permitan conservar las muestras de heces hasta el momento de la determinación de antígeno por el método de FasciDIG®. MÉTODOS: se utilizaron diferentes soluciones preservantes (dicromato de potasio 2 por ciento, hibitane acuoso 0,5 por ciento, glutaral 2 por ciento, cloruro de benzalconio 1 por ciento, azida sódica 0,04 por ciento y agua destilada con tween 20 0,05 por ciento) a temperatura ambiente, 4 ºC y - 20 ºC. RESULTADOS: en las muestras preservadas a temperatura ambiente, las que no tenían preservo sufrieron un gran deterioro, mostraron valores superiores a las conservadas con agua tween 20 y con azida sódica. Esta última es un producto altamente tóxico, por ser un inhibidor de la cadena respiratoria y requeriría de un mayor cuidado en su utilización. CONCLUSIONES: se sugiere que la solución preservante de agua destilada con tween 20 0,05 por ciento a temperatura ambiente mostró los mejores resultados en el estudio(AU)


INTRODUCTION: fascioliasis is an endemic disease in cattle in Cuba, but in the last few years, there has been an increase in the number of reported human cases. OBJECTIVES: the difficulties in diagnosing this disease in rural areas or in zones far away from the laboratory make it necessary to find adequate solutions that allow preserving the stool specimens until the antigen is detected by the FasciDIG® method. METHODS: several preserving solutions were used (2 percent potassium dichromate, 0,5 percent aqueous hibitane, 2 percent glutaral, 1 percent benzalkonium chloride, 0,04 percent sodic azide and 0,05 percent distilled water with 20 tween) at room temperature, 4 ºC and - 20 ºC. RESULTS: among the samples kept at room temperature, those with no preserve suffered a significant deterioration, and their values were higher than the ones of the samples conserved with distilled water with tween 20 and with sodium azide. The latter is a very toxic product and its use would require a greater care. CONCLUSIONS: 0,05 percent distilled water with 20 tween at room temperature was the preserving solution with the best results in this study(AU)


Assuntos
Humanos , Técnicas de Laboratório Clínico , Fasciola hepatica/microbiologia , Fasciola hepatica/parasitologia , Fezes
6.
Rev. gastroenterol. Perú ; 21(2): 148-52, 2001.
Artigo em Espanhol | LILACS, LIPECS | ID: lil-295176

RESUMO

La fasciolasis humana es una infección parasitaria causada por el tremátode Fasciola hepática que afecta principalmente al ganado ovino y vacuno, siendo el hombre un hospedero accidental. La situación epidemiológica ha cambiado en los últimos años, habiéndose reportado un incremento en el número de casos en diferentes países alrededor del mundo. En la mayoría de los casos el diagnóstico de la infección en la fase aguda o invasiva y en la fase crónica o de estado, es difícil por la superposición de síntomas de ambas fases, por la escasez de síntomas o por la eliminación intermitente de huevos por el parásito adulto. La determinación de la fase en que se encuentra el paciente, va a depender de la sospecha clínica y de la elección de métodos serológicos o coproparasitológicos adecuados en las fases aguda o crónica respectivamente, así como también de determinar si éste proviene de una zona endémica. En el presente trabajo, se reportan 6 casos de pacientes que fueron hospitalizados en el Hospital Nacional Arzobispo Loayza, en Lima entre los años de 1990 a 1999, cuyos diagnósticos presuntivos fueron diferentes del diagnóstico final y que presentaron problemas de diagnóstico. Se establece la importancia de la correlación entre el dato de procedencia, los hallazgos físicos y de laboratorio para el diagnóstico de esta parasitosis.


Assuntos
Humanos , Feminino , Adulto , Zoonoses/parasitologia , Zoonoses/epidemiologia , Dor Abdominal/terapia , Fasciola hepatica/microbiologia , Fasciola hepatica/parasitologia , Hospitais Estaduais
7.
La Paz; s.n; 1989. 201 p. graf.
Monografia em Espanhol | LILACS, LIBOCS, LIBOE | ID: lil-289041

RESUMO

Contiene: La fasciola hepatica; caracteristicas anatomicas de la fasciola hepatica; fisiologia y su ciclo biologico; los caracoles o churos hospederos intermediarios, la fascioliasis o distomatosis hepatica; tratamiento medico humano animal control caracoles y controles biologicos; presentacion y analisis de la investigacion; antecedentes; la fasciola hepatica un problema de salud; cullucachi una comunidad enferma; el minifundio y su relacion con la produccion salud; testimonios de los campesinos de la comunidad de Cullucachi; tipo de estudio; metodologia; objetivos de la investigacion; interaccion de los factores socioeconomicos y biologicos que caracterizan el proceso salud enfermedad de la poblacion infantil; factores de riesgo sanitario ambiental; perfil epidemiologico parasitario; estado nutricional de la poblacion; conclusiones; correlacion clinico laboratorial de los casos, fascioliasis o distomatosis hepatica; pruebas laboratoriales efectuadas y resultados observados; fijacion de complemento; hematologia, hemoglobina recuento eosenofilico; copraparasitologia; clinica dolor colico recurrente, sindrome diarreico; hepatomegalia, trastornos de la piel, lineamientos generales para una propuesta de accion; uso de controles biologicos; lucha contra el caracol; conclusiones generales; conclusiones; antecedentes bibliograficos del tema


Assuntos
Humanos , Fasciola hepatica/anatomia & histologia , Fasciola hepatica/citologia , Fasciola hepatica/fisiologia , Fasciola hepatica/imunologia , Fasciola hepatica/microbiologia , Fasciola hepatica/parasitologia , Bolívia
8.
Acta méd. colomb ; 11(1): 32-6, ene.-feb. 1986. mapas, graf
Artigo em Espanhol | LILACS | ID: lil-292755

RESUMO

Se presentan tres pacientes procedentes de Bogotá, pertenecientes a la misma familia, consumidores habituales de berros, con cuadro clínico caracterizado por perdida de peso, dolor en hipocondrio derecho y eosinofolia causado por Fasciola hepática y confirmado por sero diagnóstico y copro-análisis. El caso estudiado en el Hospital San Juan de Dios (H.S.J.D.) sirvió como índice para el diagnóstico de los dos familiares atendidos en otras instituciones. El tratamiento se realizó con dehidroemetina en dos pacientes y en otro con praziquantel, con buenos resultados


Assuntos
Humanos , Masculino , Feminino , Emetina/administração & dosagem , Emetina/uso terapêutico , Fasciola hepatica/isolamento & purificação , Fasciola hepatica/microbiologia , Fasciola hepatica/fisiologia , Fezes/parasitologia , Praziquantel/administração & dosagem , Praziquantel/uso terapêutico , Testes Sorológicos/métodos
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