LEISHMANIASIS VISCERAL EN UN CANINO
Contenido principal del artículo
Resumen
La leishmaniasis visceral es una enfermedad infecciosa y zoonótica distribuida mundialmente, que afecta al hombre, animales domésticos y silvestres. Su agente etiológico es un protozoario difásico del género Leishmania, cuyas especies difieren geográficamente en el Viejo y Nuevo Mundo, siendo transmitidos por vectores artrópodos de los géneros Phlebotomus y Lutzomyia en dichas áreas geográficas, respectivamente. En América Central y del Sur la Leishmania chagasi del complejo donovani, es causante de la leishmaniasis visceral, estando demostrada la positividad en el estado Aragua por estudios de seroprevalencia en la población canina autóctona. Un paciente canino macho, de raza Bóxer, de cuatro meses de edad se presentó con historia clínica de dificultad respiratoria e intolerancia al ejercicio de inicio agudo. Al examen físico se evidenció hipertermia y linfoadenomegalia generalizada; el ritmo y frecuencia cardiaca se encontraron alterados por disrritmias y taquicardia marcada; los sonidos cardiacos se apreciaron disminuidos de intensidad con matidez a la percusión torácica. La evolución fue desfavorable a pesar del tratamiento farmacológico, conllevando a la muerte del paciente en 48 horas de hospitalización con monitoreo contínuo. La necropsia reveló alteraciones macroscópicas de congestión pasiva crónica representados por hepato-esplenomegalia asociados a insuficiencia cardiaca congestiva bilateral (efusión pleuro-peritoneal y edema pulmonar). Histopatológicamente, se observó la presencia de amastigotes de Leishmania spp., en miocardio, bazo y nódulos linfáticos, soportando el diagnóstico etiológico de leishmaniasis visceral conjuntamente con la naturaleza infecciosa del cuadro clínico.
Visceral Leishmaniasis in a Dog
ABSTRACT
Visceral leishmaniasis is a worldwide distributed infectious and zoonotic disease affecting people, domestic, and wildlife animals. It is caused by a diphasic protozoan of the genus Leishmania, involving distinct species that differs geographically between the Old and New World, and its arthropod vectors being from genuses Phlebotomus and Lutzomyia, responsible for transmission in those areas, respectively. Leishmania chagasi from the donovani complex, has been demonstrated as a cause for visceral leishmaniasis in Central and South America and its sero prevalence, among Aragua state canine population, has been shown by a field study. A four months old, male canine boxer was presented with concern for acute onset of respiratory distress and exercise intolerance. Physical examination revealed hyperthermia, generalized lymphoadenomegaly, severe dysrrittmia and tachycardia altering rhythm and heart rate. A muffled heart sound and thoracic dullness were remarkable at auscultation and percussion, respectively. Despite of aggressive medical treatment, the patient died after 48 hours of continued monitoring at hospital facility. At necropsy most prominent findings were represented by hepatic-splenomegaly due to chronic passive congestion, related to bilateral congestive heart failure (pleural and peritoneal effusion and pulmonary edema). The presence of Leishmania spp., amastigotes in myocardial, spleen and lymph nodes tissues was revealed histologically, supporting visceral leishmaniasis and infectious nature of this case report.
Visceral Leishmaniasis in a Dog
ABSTRACT
Visceral leishmaniasis is a worldwide distributed infectious and zoonotic disease affecting people, domestic, and wildlife animals. It is caused by a diphasic protozoan of the genus Leishmania, involving distinct species that differs geographically between the Old and New World, and its arthropod vectors being from genuses Phlebotomus and Lutzomyia, responsible for transmission in those areas, respectively. Leishmania chagasi from the donovani complex, has been demonstrated as a cause for visceral leishmaniasis in Central and South America and its sero prevalence, among Aragua state canine population, has been shown by a field study. A four months old, male canine boxer was presented with concern for acute onset of respiratory distress and exercise intolerance. Physical examination revealed hyperthermia, generalized lymphoadenomegaly, severe dysrrittmia and tachycardia altering rhythm and heart rate. A muffled heart sound and thoracic dullness were remarkable at auscultation and percussion, respectively. Despite of aggressive medical treatment, the patient died after 48 hours of continued monitoring at hospital facility. At necropsy most prominent findings were represented by hepatic-splenomegaly due to chronic passive congestion, related to bilateral congestive heart failure (pleural and peritoneal effusion and pulmonary edema). The presence of Leishmania spp., amastigotes in myocardial, spleen and lymph nodes tissues was revealed histologically, supporting visceral leishmaniasis and infectious nature of this case report.
Descargas
Los datos de descargas todavía no están disponibles.
Detalles del artículo
Número
Sección
Artículos de Investigación