Adenoma de ductos biliares en Boga (Leporinus obtusidens) del río Paraná

Carolina Flores Quintana

Resumen


La mayoría de las condiciones patológicas básicas diagnosticadas en los animales terrestres también son observadas en los peces. Algunos factores son identificados como responsables, en diferentes grados, de la formación de tumores. Existe asociación entre contaminantes ambientales con riesgo potencial para la salud humana y la ocurrencia de neoplasias en organismos acuáticos. Las neoplasias hepáticas que derivan del epitelio de conductos biliares son poco frecuentes en los animales. Experimentalmente fueron inducidas por carcinógenos químicos en mamíferos y en peces. En este trabajo se describen las características histopatológicas de una neoplasia hepática hallada en un ejemplar de boga (Leporinus obtusidens) capturado en el tramo medio del río Paraná, Argentina. No se encontraron lesiones en otros órganos. Se discute la presencia de centros melanomacrófagos en relación a los mecanismos de defensas del huésped por ser considerados indicadores potenciales del estado de salud de los peces y la presentación de células rodlet vinculadas a condiciones ambientales tóxicas subletales, anteriormente propuestas como potenciales biomarcadores de contaminación.

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