RESUMO
Objective: To compare the results for homocysteine concentration using chemiluminescence and HPLC methods in samples from school-age children. In addition, to determine the reference values for patients of this age group and assess the real prognostic value of homocysteine in healthy children. Methods: A prospective observational study was undertaken to determine plasma levels of homocysteine using two different assays, HPLC and chemiluminescence, in 185 samples from school-age children living in Santo Andre, with no chronic or inflammatory diseases, and absence of pubertal development. Results: The results were presented in percentiles and reference values were determined within this age group (7-9 years old). Homocysteine concentration ranged from 2.0 to 9.9 mumol/l (r = 0.821 and p < 0.001). Conclusions: It was verified that chemiluminescence is comparable to HPLC when both techniques are used to detect homocysteine in school-age children. There is an important correlation between both methods, which allows investigation of this amino acid as a risk factor for heart diseases.
Objetivo: Comparar os resultados da concentração de homocisteína usando os métodos de quimioluminescência e HPLC em amostras de crianças escolares. Determinar os valores de referência desse grupo etário e avaliar o valor prognóstico real da homocisteína em crianças saudáveis. Métodos: Um estudo prospectivo observacional foi executado para determinar os níveis de homocisteína usando dois ensaios diversos, o HPLC e a quimioluminescência, em 185 amostras de crianças em idade escolar moradoras da cidade de Santo André, que não apresentassem doenças crônicas ou inflamatórias, na ausência de desenvolvimento puberal. Resultados: Os resultados foram apresentados em percentis e os valores de referência foram determinados para esse grupo etário (7-9 anos). As concentrações de homocisteína variaram de 2,0 a 9,9 miumol/l (r = 0,821 e p < 0,001). Conclusões: Verificamos que o método da quimioluminescência é comparável ao método HPLC quando as técnicas são usadas para detectar a homocisteína em crianças em idade escolar. Houve importante correlação entre os dois métodos, o que permite a investigação desse aminoácido como um fator de risco para doenças cardíacas.
Assuntos
Humanos , Masculino , Feminino , Criança , Cromatografia Líquida de Alta Pressão , Homocisteína , Medições LuminescentesRESUMO
OBJECTIVE: To compare the results for homocysteine concentration using chemiluminescence and HPLC methods in samples from school-age children. In addition, to determine the reference values for patients of this age group and assess the real prognostic value of homocysteine in healthy children. METHODS: A prospective observational study was undertaken to determine plasma levels of homocysteine using two different assays, HPLC and chemiluminescence, in 185 samples from school-age children living in Santo Andre, with no chronic or inflammatory diseases, and absence of pubertal development. RESULTS: The results were presented in percentiles and reference values were determined within this age group (7-9 years old). Homocysteine concentration ranged from 2.0 to 9.9 µmol/l (r = 0.821 and p < 0.001). CONCLUSIONS: It was verified that chemiluminescence is comparable to HPLC when both techniques are used to detect homocysteine in school-age children. There is an important correlation between both methods, which allows investigation of this amino acid as a risk factor for heart diseases.