ABSTRACT
During Schistosoma mansoni infection, there is morphological evidence of involvement of various hematopoietic growth factors, which cause eosinophil, neutrophil, megakaryocytic and erythroid extramedullary foci in the liver, lymph nodes and omental and mesenteric milky spots. While the eosinophil metaplasia in the periphery of hepatic granulomas roughly reproduced the intensity of the medullary eosinopoiesis, the neutrophil metaplasia, on the contrary, was more intense during the period of neutrophil depression in the bone marrow. This fact suggests that extramedullary hematopoietic foci are locally regulated, and amplify and/or compensate the systemic hematopoietic response during the infection.
Subject(s)
Animals , Female , Humans , Male , Mice , Hematopoiesis, Extramedullary , Schistosomiasis mansoni , Liver/pathology , Granuloma , Liver Diseases, Parasitic/pathology , Bone Marrow/pathology , Metaplasia , Primary Myelofibrosis , Time FactorsABSTRACT
Pancreatic involvement during murine schistosomiasis is frequent (30 to 80%), heterogeneous, usually mild, but can occasionally be severe, characterized by granulomatous pancreatitis. After infection, pancreatic granulomas appear from day 50 on, with th most severe pancreatitis being demonstrable between days 90 and 100. Mice thus appear to be a useful model for study of the pathogenesis of Schistosoma mansoni-induced pancreatitis