Localization of peroxidase activity in blood mononuclear phagocytes in pacu fish (Piaractus mesopotamicus).

Pellizzon, C H; Nakaghi, L S O; Azevedo, A; Casaletti, L; Lunardi, L O

Pellizzon, C H; Nakaghi, L S O; Azevedo, A; Casaletti, L; Lunardi, L O.

Afiliación

Pellizzon CH; Department of Morphology, Biosciences Institute, UNESP, Botucatu, SP, Brazil. claudia@ibb.unesp.br

J Submicrosc Cytol Pathol ; 34(4): 377-9, 2002 Oct.

Article en En | MEDLINE | ID: mdl-12575836

RESUMEN

The localization of peroxidase activity in different cell regions is used as a criterion for classifying the stage of maturity of mammalian mononuclear phagocytes, with a positive peroxidase reaction indicating the presence of monoblasts, promonocytes, monocytes, and macrophages. Peroxidase activity was observed ultrastructurally in the circulating blood of pacu fish (Piaractus mesopotamicus), identifying monoblasts, promonocytes, monocytes, and macrophages. These observations suggest that differentiation of mononuclear phagocytes occurs in the blood circulation of fish, whereas in mammals, monoblasts and promonocytes are detected in bone marrow, with only monocytes detected in circulating blood and differentiation into macrophages occurring in other body compartments.

Asunto(s)

Peces/sangre; Monocitos/enzimología; Peroxidasa/metabolismo; Fagocitosis/fisiología; Animales; Diferenciación Celular; Histocitoquímica; Masculino; Microscopía Electrónica; Monocitos/química; Monocitos/ultraestructura; Peroxidasa/análisis

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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fagocitosis / Monocitos / Peroxidasa / Peces Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: J Submicrosc Cytol Pathol Asunto de la revista: PATOLOGIA Año: 2002 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Italia

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