IHEM   20887
INSTITUTO DE HISTOLOGIA Y EMBRIOLOGIA DE MENDOZA DR. MARIO H. BURGOS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Hemocyte spheroidal aggregates in the kidney and lung of the apple-snail (Pomacea canaliculata) after an immune challenge
Autor/es:
RODRÍGUEZ C, VEGA IA, CUETO JA, CASTRO-VAZQUEZ A.
Lugar:
San Luis
Reunión:
Congreso; XXX Reunión Científica Anual; 2012
Resumen:
Hemocyte aggregation has been shown in decapod crustaceans as a response to bacterial injection. We have also observed the formation of spheroidal aggregates in hemocyte primary cultures of P. canaliculata. We here report the formation of spheroidal hemocyte aggregates in the lung and kidney of this snail 96 h after injection of a yeast cell suspension into the visceral hump. Normally, the kidney contains interepithelial hemocyte islets, but also three-dimensional spheroids are formed in response to yeast injection. The lung does not normally show either hemocyte islets or aggregations, but small to medium-sized hemocyte spheroids were observed within large vessels after yeast injection, and some spheroids got stuck in the smaller vessels and also grew into the surrounding connective tissue. We have hypothesized that both the kidney and the lung may represent distinct immune barriers against natural pathogens in P. canaliculata. Spheroid formation may be a key feature of the response of this snail to immune challenges. Further investigations will be needed to shed light into the differential role of the kidney and lung as immune barriers.