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Biotecnologia Aplicada
Elfos Scientiae
ISSN: 0684-4551
Vol. 14, No. 4, 1997, pp. 253-255
Bioline Code: ba97056
Full paper language: English
Document type: Research Article
Document available free of charge

Biotecnologia Aplicada, Vol. 14, No. 4, 1997, pp. 253-255

 en Use of a monoclonal antibody to detect apolipoprotein B in cupric sulfate oxidized low density lipoproteins and in human serum
Simon, Rafael & Sorell, Luis

Abstract

A sensitive sandwich enzyme linked immunosorbent assay (ELISA) was used to detect changes undergone by low density lipoproteins (LDL) when oxidized in the presence of SO4Cu. The monoclonal antibody used as the capture antibody in the assay recognized chemical modifications in apolipoprotein B (Apo B) at early stages of the oxidative process. Using this ELISA, measurable amounts of modified Apo B were detected in sera from 61 patients with lower limb obliterans atherosclerosis and in 61 healthy individuals. The patients had higher levels than the control group (55+/-19 and 28+/-13 UM Apo B/dL, respectively, p < 0.0001). A significant correlation (r = 0.86, p < 0.001) was found between the levels of modified Apo B and those of lipoperoxides. We conclude that this method might be useful for investigating oxidized LDL in human serum as an early predictor of atherosclerosis.

Keywords
oxidized low density lipoproteins, LDL, monoclonal antibody, MAb, enzyme-linked immunosorbent assay, ELISA, atherosclerosis

 
 es
Simon, Rafael & Sorell, Luis

Resumen

Se utilizo un ensayo inmunoenzimatico en fase solida (ELISA) para detectar cambios en las lipoproteinas de baja densidad cuando son oxidadas en presencia de sulfato cuprico. El anticuerpo monoclonal, empleado como anticuerpo de captura en el ensayo, reconoce modificaciones quimicas que se producen en la apolipoproteina B (Apo B) durante los primeros estadios del proceso oxidativo. Con este ELISA se detectaron niveles significativamente superiores de Apo B modificada en el suero de pacientes con aterosclerosis periferica en relacion con individuos normales utilizados como grupo control (55+/-19 y 28+/-13 UM Apo B/dL, respectivamente, p < 0,0001). Los niveles de Apo B modificada se correlacionaron significativamente con los niveles de peroxidos lipidicos (r = 0,86; p < 0,001). Se concluye que este metodo puede ser util para la deteccion de LDL oxidada en suero humano como indicador precoz de riesgo aterogenico.

Palabras-clave
lipoproteinas de baja densidad oxidadas, LDL, anticuerpo monoclonal, AcM, ensayo inmunoenzimatico en fase solida, ELISA, aterosclerosis

 
© Copyright 1997, Elfos Scientiae
Alternative site location: http://elfosscientiae.cigb.edu.cu/Archivo.asp?Id=6

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