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Hematol J. 2004;5(6):496-9.

p-Iodophenol-enhanced luminol chemiluminescent assay applied to discrimination between acute lymphoblastic and minimally differentiated acute myeloid (FAB-M0) or acute megakaryoblastic (FAB-M7) leukemias.

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  • 1Department of Clinical Analysis (LAC), School of Pharmaceutical Sciences, State University of São Paulo (UNESP), Araraquara, SP, Brazil.



In this report, we propose the application of the p-iodophenol-enhanced luminol chemiluminescent technique to the determination of peroxidase (myeloperoxidase and/or platelet peroxidase) activity in blasts of minimally differentiated acute myeloblastic leukemia (AML-M0) and acute megakaryoblastic leukemia (AML-M7).


The frozen blast cells from 29 patients were thawed and submitted to the optimized protocol.


All cases of AML-M7 and AML-M I exhibited integrated light emission greater than 73(10(2) mV x s), which was the arbitrary cutoff point set for the discrimination between AML and acute lymphoblastic leukemia (ALL) (mean + 3 x s.d. of ALL samples, n = 10). In addition, five out of seven cases of AML-MO showed results above the cutoff point.


This highly sensitive enhanced chemiluminescent technique may be applied to discriminate between ALL and AML-M7 or AML-MI cases, and most AML-M0 cases. It is very simple, cheap and easy to perform compared to other procedures used to measure MPO activity in AML-leukemias including AML-M7 and AML-M0.

[PubMed - indexed for MEDLINE]
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