Search results for "Fasciola"
showing 8 items of 98 documents
Fasciolasis humana y animal en África, con enfásis en Egipto
2013
Fasciolid flukes cause fascioliasis, an helminthic disease of humans and livestock and which is transmitted by specific freshwater snails of the family Lymnaeidae, within a frame of transmission and epidemiology pronouncedly influenced by climate factors and environmental conditions. In Africa, fascioliasis is caused by the two species Fasciola hepatica and F. gigantica, giving rise to important economic losses in husbandry throughout. Research on human infection has focused on northern Maghreb countries and Egypt, whereas studies on the wide region southward from the Sahara have only been sporadic. The present Thesis includes the genetic characterisation of the lymnaeid species found in se…
Human and animal fascioliasis in andean regions of argentina: lymnaeid vectors and livestock reservoirs
2018
La fascioliasis es una enfermedad parasitaria zoonótica causada en América por Fasciola hepatica. Produce serias pérdidas económicas a la ganadería y es un importante problema en salud pública a nivel mundial. Las más altas prevalencias en humanos se hallan en regiones andinas. La especie de lymnaeido vector involucrada condiciona el escenario epidemiológico. En Argentina existía gran controversia acerca de las especies de lymnaeidos vectores presentes. Además de los bovinos, escasos estudios han considerado el rol que cumplirían otras especies domésticas y silvestres como reservorios. La fascioliasis humana ha sido considerada una enfermedad de escasa relevancia. El objetivo del presente t…
Is the El Niño-Southern Oscillation likely to increase the risk of Fasciola transmission?
2007
(2007). Is the El Nino–Southern Oscillation likely to increase the risk of Fasciola transmission? Annals of Tropical Medicine & Parasitology: Vol. 101, No. 6, pp. 555-557.
Isolation and characterization of microsatellite markers in the liver fluke (Fasciola hepatica)
2004
PRIMER NOTE; International audience; Six microsatellite markers were isolated from Fasciola hepatica, a re-emerging parasite that causes important veterinary and public health problems. In a sample of 52 liver flukes from a region of hyperendemicity (Bolivian Altiplano), five microsatellite were polymorphic. Our results showed that liver flukes present important genetic variability, suggesting a preferential outcrossing reproduction mode for this hermaphroditic parasite.
Phenotypic and genetic characterization of emerging trematodiasis: Fascioliasis and Schistosomiasis
2021
La Fascioliasis y la Esquistosomiasis son dos importantes trematodiasis (re)emergentes con gran impacto en la salud humana. Dada la necesidad de caracterizar las poblaciones de Trematodos involucradas, los objetivos de la presente investigación son: en primer lugar, analizar el impacto de la reinfección experimental por Fasciola hepatica en los fenotipos inmunológicos, clínicos y biológicos por medio de un diseño experimental que reproduce las condiciones habituales de reinfección/cronicidad en las zonas endémicas de la Fascioliasis humana; en segundo lugar, la caracterización fenotípica morfológica de huevos de Schistosoma haematobium de migrantes subsaharianos con Esquistosomiasis urogeni…
Estudio experimental comparado de marcadores bioquímicos en la infección por Fasciola hepatica y F. gigantica
2017
Fascioliasis is caused by the genetically and phenotypically very close Fasciola hepatica and F. gigantica. The latter, always considered secondary in human infection, appears nowadays increasingly involved in human endemic areas of Africa and Asia. Unfortunately, little is known about the pathogenicity of this liver fluke species, mainly due to difficulties assessing the moment of a patient's infection in the anamnesis and in the differential diagnosis with F. hepatica. This is the first experimental study comparing F. hepatica and F. gigantica in a long-term study of up to 24 weeks with genotypically and phenotypically standardised fluke strains in the same animal model host, the Guirra s…
Fenotipaje de individuos del género fasciola linnaeus, 1758 (trematoda: fasciolidae) de areas endemicas con caracteristicas heterogeneas
2016
Fascioliasis is a zoonotic disease emerging in numerous parts of the world. Fascioliasis is an important food-borne parasitic disease caused by the two trematode species, Fasciola hepatica and Fasciola gigantica. The characterisation and di erentiation of Fasciola populations is crucial to control the disease, given the di erent transmission, epidemiology and pathology characteristics of the two species. Furthermore, in any endemic area, the characterisation of scenarios and patterns of infection must always be considered the starting point before implementing any control measure. Morphometric analyses were made with a computer image analysis system (CIAS) applied on the basis of standardis…
Estudios estratégicos para la lucha contra la fascioliasis humana a nivel mundial = Strategic studies for the fight against de human fascioliasis wor…
2013
Fascioliasis is a zoonotic parasitic disease caused by Fasciola hepatica and F. gigantica. Emergence of human fascioliasis prompted a worldwide control initiative including a pilot study in several countries. Given the necessity to characterize the fasciolid populations involved, the overall aim of the present research is, first, the phenotypic characterization of faciolid adults and eggs implicated in human endemic areas, where this initiative has been implemented, through a computer image analysis system (CIAS) applied on the basis of standardized measurements. Second, new immunological techniques and their potential use as immunological diagnostic tests in those areas are evaluated. The …