Prevalencia y factores asociados a la infección por toxoplasma gondii en carne procedente de plantas de beneficio animal con destino nacional
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Autores
Franco Hernández, Erika Natalia
Director
Gómez Marín, Jorge Enrique (Thesis advisor)
Tipo de contenido
Trabajo de grado - Maestría
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EspañolFecha de publicación
2015-04-10
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La toxoplasmosis es la enfermedad parasitaria causada por Toxoplasma gondii, un protozoario de vida intracelular obligado que, en animales de sangre caliente como hospederos intermediarios, se encuentra en forma de quistes tisulares, con manifestaciones clínicas oculares y en sistema nervioso en personas inmunosuprimidas y en recién nacidos que la adquieren de forma congénita. El estudio buscó determinar la prevalencia de Toxoplasma gondii en la carne procesada en plantas de beneficio animal con destino a todo el país, usando la Prueba de Reacción en Cadena de la Polimerasa (PCR). Se realizó un estudio descriptivo de corte transversal. En muestras de carne se utilizó la prueba de PCR para detectar el gen B1, adicionalmente se secuenciaron algunas muestras positivas. También se realizó la trazabilidad de la procedencia de los animales. Se encontró una prevalencia de infección de T. gondii en la carne de 43,9%, en bovinos de 36,7%, en porcinos de 40% y en aves de 55%. Se confirmó la presencia del gen B1 en las secuencias amplificadas, lo que sugiere que la carne es una importante fuente de infección a considerar en los humanos si se consume poco cocinada o cruda.
Abstract. Toxoplasmosis is the parasitical disease caused by Toxoplasma gondii, a protozoan of compelled intracellular life that, in warm blood animals as intermediary host, it is found as tisular cyst, with clinical ocular manifestations and in nervous system of immune suppressed people and in newborn that acquire it by congenital way. The research consist in determine Toxoplasma gondii prevalence in processed meat on animal profit plants destined to the whole country, using the polymerase chain reaction test (PCR). It was made a transverse section descriptive research. PCR was used in meat samples for gene B1 detection, some positive samples were arranged in sequence additionally. Animals origin traceable research was also did. It was found a prevalence of T. gondii infection in meat of 43,9%, in bovines of 36,7%, in hog of 40% and in poultry of 55%. Presence of gene B1 was confirmed on amplified sequences which suggest that meat is an infection source in human beings to consider if it´s consumed undercooked or raw.
Abstract. Toxoplasmosis is the parasitical disease caused by Toxoplasma gondii, a protozoan of compelled intracellular life that, in warm blood animals as intermediary host, it is found as tisular cyst, with clinical ocular manifestations and in nervous system of immune suppressed people and in newborn that acquire it by congenital way. The research consist in determine Toxoplasma gondii prevalence in processed meat on animal profit plants destined to the whole country, using the polymerase chain reaction test (PCR). It was made a transverse section descriptive research. PCR was used in meat samples for gene B1 detection, some positive samples were arranged in sequence additionally. Animals origin traceable research was also did. It was found a prevalence of T. gondii infection in meat of 43,9%, in bovines of 36,7%, in hog of 40% and in poultry of 55%. Presence of gene B1 was confirmed on amplified sequences which suggest that meat is an infection source in human beings to consider if it´s consumed undercooked or raw.