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Medicina (B.Aires) ; 69(3): 331-334, jun. 2009. ilus, tab
Article in Spanish | LILACS | ID: lil-633646

ABSTRACT

El objetivo de este trabajo fue estudiar la relación del ácido siálico sérico (AS) y la carga aniónica eritrocitaria (CAE) con la agregación eritrocitaria en dos grupos de pacientes: diabéticos (DBT n= 20) e hipertensos (HTA n= 21), comparados con un grupo control (n= 20). Se trabajó con sangre anticoagulada con EDTA y suero. La agregación eritrocitaria se estudió por observación microscópica de los agregados y cuantificación a través de un parámetro de forma denominado ASP (Aggregation Shape Parameter). La CAE se determinó por unión a colorante alcian blue y el AS por método espectrofotométrico con reactivo de Erlich. Los valores de ASP y AS resultaron significativamente aumentados en los HTA y DBT respecto de los normales. Los HTA y DBT presentaron agregados amorfos, lo que se refleja en los valores alterados de ASP, significativamente mayores (p < 0.005) respecto de los individuos normales. Los valores de CAE resultaron significativamente inferiores en los HTA y DBT respecto del grupo control (p < 0.0001). En este trabajo se demostraron anormalidades en la agregación eritrocitaria, detectadas por los valores de ASP, CAE y AS que podrían estar involucradas en las complicaciones vasculares de vasculopatías como la hipertensión y la diabetes.


The aim of this work was to study the relationship between serum sialic acid (SSA) and erythrocyte anionic charge (EAC) with erythrocyte aggregation in two groups: diabetic (DBT, n=20) and hypertensive (HT, n=21) patients, compared to a control group (n=20). We worked with anticoagulated blood with EDTA and serum. The erythrocyte aggregation was studied by microscopically observing and quantifying aggregates using an ASP (Aggregate Shape Parameter). The EAC was determined by binding an Alcian blue dye to the membrane sialic acid and SSA was determined by spectrophotometric method with an Erlich reactant. The values of ASP and SSA increased significantly in HT and DBT patients compared to the control group. The HT and DBT groups showed amorphous aggregates, evident in an alteration in the values of ASP, which were significantly higher ( p< 0.005) than in healthy patients. The EAC values were much lower in HT and DBT patients than in the control group (p < 0.0001). In this work, abnormalities in the erythrocyte aggregation could be detected by the values of ASP, EAC and SSA, which might be involved in vascular disorders of diseases such as hypertension and diabetes.


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Anions/metabolism , Diabetes Mellitus/blood , Erythrocyte Aggregation , Hypertension/blood , N-Acetylneuraminic Acid/blood , Case-Control Studies
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