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Determinación de los Niveles de Mercurio en Sangre y Plasma de Pacientes con Leucemia

Authors: Colina, Marinela; sthormes, carolina; Salas, Rodolfo; Navas, Jervis; Granadillo, Víctor; Montilla, Brinolfo;

Determinación de los Niveles de Mercurio en Sangre y Plasma de Pacientes con Leucemia

Abstract

Se desarrollaron metodologías analíticas para la determinación de los niveles de mercurio en muestras de sangre completa y plasma de pacientes con leucemia registrados en el instituto Hematológico de Occidente, Maracaibo, evaluando la concentración total de Hg y sus especies químicas en muestras sanguíneas de los pacientes estudiados (n=34) y de sujetos controles (n=5), a través de HPLC-ICP-MS. El límite de detección obtenido calculado para la determinación de Hg en sangre completa y plasma fue de 1,39 µg HgL-1 y el límite de cuantificación fue 1,39 µg HgL-1. Las concentraciones totales de mercurio en sangre y plasma fueron 16,89±8,76 µg HgL-1 [8,22-45 µg HgL-1] y 25,77±5,12 µg HgL-1 [10,6-40,87µg HgL-1] respectivamente, mientras que para la población control fueron de 25,36±11,4 [10,6-40,87 µg HgL-1] y 74,46±16,09 [64,38-102,82 µg HgL-1]. La media de Hg-S del grupo de los varones evaluado fue 16,08±7,85 µg HgL-1 y en las hembras 18,68±10,05 µgL-1, la media de Hg-S en las hembras fue significativamente superior (P<0,05) que la media de Hg-S observada. Los límites de detección para las especies químicas de Hg estudiadas en sangre resultaron: CH3Hg+ (0,7 µg HgL-1), Hg+2 (0,53 µg HgL-1). Las concentraciones encontradas de Hg+2 y CH3Hg+ en los pacientes de leucemia en sangre completa y plasma fueron 8,16±1,67 [6,96 – 10,97], 9,85±6,22 µg Hg+2.L-1 [6,04 – 20,74], y 11,47±4,33 µg Hg+2.L-1 [7,28 – 18,63], 11,28±5,40 [6,24 – 18,63] respectivamente, mientras que para la población control fueron 10,04±3,84 µg Hg+2.L-1 [5,41 – 15,86], 12,24±5,76 [6,00 – 21,37] y 33,48±8,62 µg Hg+2.L-1 [27,59 – 48,36], 28,44±13,13 [18,25 – 50,23]. Palabras clave: leucemia, mercurio, sangre, plasma. ABSTRACT: In this work, analytical methodologies were developed for the determination of mercury levels in blood and plasma samples of patients with leukemia registered at the Haematological Institute of the West, Maracaibo, evaluating the total concentration of Hg and its chemical species in blood samples from the patients studied (n = 34) and of control subjects (n = 5), by the HPLC-ICP-MS. The calculated limit of detection found for the determination of Hg in blood and plasma was 1.39 μg Hg/L and the limit of quantification was 1.39 μg Hg.L-1. The total mercury concentrations in blood and plasma of 16.89±8.76 μg Hg.L-1 [8.22-45 μg Hg.L-1] and 25.77±5.12 μg Hg.L-1 [10.6-40.87μg Hg.L-1] respectively and for the control population were 25.3637±11.4 [10.6-40.87 μg Hg.L-1] and 74.46±16.09 [64.38-102.82 μg Hg.L-1]. The mean of Hg-S of the group of males evaluated was 16.08±7.85 µg Hg.L-1, and in females were 18.68±10.05 μg.L-1, the mean of Hg-S in the females was significantly higher (P <0.05) than the mean Hg-S observed. The detection limits for the Hg chemical species studied in blood are: Hg+ (0,7 µg Hg.L-1), Hg+2 (0,53 µg Hg.L-1). The concentrations found for Hg+2 and CH3Hg+ in leukemia patients in blood and plasma were 8.16±1.67 [6.96-10.97], 9.85±6.22 μg Hg+2.L-1 [6.04-20.74], and 11.47±4.33 μg Hg+2.L-1 [7.28-18.63], 11.28±5.40 [6.24-18.63] respectively, while for the control population were 10.04±3.84 μg Hg+2.L-1 [5.41-15.86], 12.24±5.76 [6.00-21.37] and 33,48±8.62 μg Hg+2.L-1 [27.59-48.36], 28.44±13.13 [18.25-50.23].  Key words: leukemia, mercury, blood, plasma.

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Keywords

Q1-390, Science (General), mercury, blood, Science, Q, leukemia, mercurio, sangre, plasma, leucemia

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This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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