Modelo animal de anemia inducida por flebotomía crónica: Relación funcional entre hierro y eritropoyesis
; Giorgi, Gisela
; García, Betina Noemi ; Mora Bautista, Ana Isabel ; Castillo Bohorquez, Marta ; Roque, Marta Elena Otros responsables
Fecha
06/2012
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Universidad Nacional Abierta y a Distancia
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Nova
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1794-2470
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En el presente estudio se analizo la respuesta eritropoyética a la anemia inducida por flebotomía crónica y los cambios en la distribución del hierro celular y sistémico del organismo. Ratones hembra de la cepa CF1 (n=32), se dividieron en dos lotes: control y experimental, siguiendo un diseño experimental pareado según su peso. La distribución del hierro en bazo e hígado durante la flebotomía crónica fue evaluada mediante estudios morfológicos y la actividad eritropoyética mediante estudios hematológicos. Las diferencias estadísticas se determinaron mediante Test Student. El nivel de significancia se fijó en p<0,05. Durante la flebotomía crónica se observó una disminución significativa de hemoglobina como indicador de anemia y reticulocitosis como indicador de la restauración del eritron. El bazo de ratón adulto fue el principal tejido que aportó el hierro biodisponible al eritrón, siendo evidente la depleción esplénica del micronutriente. El estudio de la anemia inducida de forma crónica en ratones permitió desarrollar condiciones fisiopatológicas análogas a las observadas en patologías humanas. El modelo de flebotomía crónica fue útil para evaluar la eritropoyesis en la instauración de la anemia y su recuperación, correlacionándola con la distribución de un nutriente esencial como es el hierro.
In the present work we studied the erythropoietic response to chronic phlebotomy-induced anemia and changes in cellular and systemic body iron distribution. Female mice (CF1 strain, n = 32) were divided into control and experimental groups, following a paired experimental design. Iron distribution in spleen and liver during chronic phlebotomy was assessed by morphological studies and erythropoietic activity by hematological studies. Statistical differences were determined by Student test. The significance level was set at p <0.05. During chronic phlebotomy we observed a significantly decreased of hemoglobin as an anemia indicator and reticulocytosis as an indicator of erythron restoration. Adult mouse spleen was the main tissue that contributed available iron to the erythron, being evident splenic iron depletion. The study of chronic induced anemia in mice allowed us to the development of patho physiological conditions similar to those observed in human pathologies. The model of chronic phlebotomy was useful to evaluate the erythropoiesis in the setting of anemia and its recovery, correlating with the distribution of an essential nutrient such as iron.
In the present work we studied the erythropoietic response to chronic phlebotomy-induced anemia and changes in cellular and systemic body iron distribution. Female mice (CF1 strain, n = 32) were divided into control and experimental groups, following a paired experimental design. Iron distribution in spleen and liver during chronic phlebotomy was assessed by morphological studies and erythropoietic activity by hematological studies. Statistical differences were determined by Student test. The significance level was set at p <0.05. During chronic phlebotomy we observed a significantly decreased of hemoglobin as an anemia indicator and reticulocytosis as an indicator of erythron restoration. Adult mouse spleen was the main tissue that contributed available iron to the erythron, being evident splenic iron depletion. The study of chronic induced anemia in mice allowed us to the development of patho physiological conditions similar to those observed in human pathologies. The model of chronic phlebotomy was useful to evaluate the erythropoiesis in the setting of anemia and its recovery, correlating with the distribution of an essential nutrient such as iron.
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