selenio en suero y plasma: epidemiología y valores de referencia selenium in serum and plasma: epidemiology and reference values

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ID: 234966
2010
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Abstract
OBJETIVO. Revisar y analizar literatura sobre valores de selenio (Se) en suero y plasma humanos; describir algunas variaciones; obtener "valores de referencia" para los países de Europa y América Latina, y proporcionar un marco informativo para estudios futuros sobre el tema. MÉTODOS. Se buscó información sobre niveles séricos o plasmáticos de Se en personas declaradas "sanas" en la literatura científica. Se revisaron las bases LILACS, SciELO, PubMed, Medline. Se buscó información de cualquier fecha (hasta enero de 2010) e idioma disponibles. Se calcularon promedio aritmético y desviación estándar ponderados. RESULTADOS: En la búsqueda para Europa se hallaron 161 informes publicados entre 1972 y 2009, con participación de 49 869 adultos sanos, 28 países y 8 regiones. El Se sérico/ plasmático varió entre 48,2 y 124,00 µg/L. Los valores ponderados continentales fueron 85,19 ± 14,58 (intervalo de confianza [IC] de 95% para promedio: 85,124-85,256). Los promedios por país, región y técnica de medición fueron estadísticamente diferentes, con diferencias significativas entre sexos y edades. Veintitrés de los estudios fueron en menores de 19 años de 10 países europeos. Los valores ponderados fueron 74,21 ± 9,50 µg/L (IC95% 73,95-74,46). Sobre América Latina hubo solo 11 datos. El Se sérico/plasmático fue 91,51 ± 18,78 µg/L en adultos; 93,25 ± 39,20 en menores de 15 años, y 130 ± 30 en recién nacidos menores de 25 horas. CONCLUSIONES: Los valores de Se sérico/plasmático mostraron diferencia estadísticamente significativa por sexo y edad en Europa, fueron más altos en adultos y niños latinoamericanos que en europeos, pero los datos latinoamericanos se basan en pocas personas. La influencia de la técnica de medición de Se en suero/plasma se considera crítica. En América Latina se requieren estudios poblacionales adecuadamente planificados y diseñados para generar valores de referencia autóctonos sobre Se en suero/plasma.
OBJECTIVE: To review and analyze the literature on selenium (Se) levels in human serum and plasma; to describe some variations; to obtain reference values for the countries of Europe and Latin America, and to provide an information framework for future studies on the subject. METHODS: Scientific literature was reviewed to gather information on selenium serum or plasma levels in people identified as "healthy." The LILACS, SciELO, and PubMed Medline databases were consulted. The search for information could be from any date (up to January 2010) and in any language. Weighted arithmetic means and standard deviations were calculated. RESULTS: For Europe, 161 reports published between 1972 and 2009 were found, covering 49 869 healthy adults, 28 countries, and 8 regions. Serum/plasma Se levels ranged from 48.2 to 124.00 µg/L. Weighted values for Europe were 85.19 ± 14.58 (CI 95% for the weighted average, 85.124-85.256). The averages by country, region, and measurement technique were statistically different, with significant differences associated with sex and age. Twenty-three of the studies involved individuals under 19 years of age in 10 European countries. The weighted values for this population were 74.21 ± 9.50 µg/L (CI 95%, 73.95-74.46). Only 11 studies from Latin America were available. Serum/plasma Se was 91.51 ± 18.78 Ìg/L in adults; 93.25 ± 39.20 in children under 15; and 130 ± 30 in newborns less than 25 hours old. CONCLUSIONS: Se serum/plasma levels in Europe showed statistically significant differences by sex and age. Se levels were higher in Latin American adults and children than in Europeans, but the Latin American data are based on few people. The technique for measuring Se in serum/plasma appears to have a significant influence. Properly planned and designed population studies should be conducted in Latin America in order to establish regional reference values for Se in serum and plasma.
Reference Key
carmona-fonseca2010revistaselenio Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Jaime Carmona-Fonseca
Journal communications on pure and applied analysis
Year 2010
DOI
DOI not found
URL
http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49892010001100009
Keywords
Plasma serum europe selenium europa tropical medicinepublic aspects of medicine

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