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Amplificação gênica alelo específica e multiplex no diagnóstico laboratorial de hemoglobinas anormais

Authors: Bertholo, Luciane Cristina;

Amplificação gênica alelo específica e multiplex no diagnóstico laboratorial de hemoglobinas anormais

Abstract

As hemoglobinopatias constituem um grupo de alterações hereditárias prevalentes em muitas regiões do mundo, atingindo a população brasileira de forma significativa; sendo decorrentes de alterações em genes estruturais, responsáveis pelo aparecimento das hemoglobinas variantes ou em genes reguladores, resultando as talassemias. Sendo assim, foram propósitos do presente trabalho estabelecer metodologia laboratorial embasada em estudo molecular que possibilite o auxílio diagnóstico de hemoglobinas anormais observadas na população brasileira e sem caracterização completa ou pouco informativa; utilizar primers que se acoplem exatamente na posição da mutação do alelo mutante e na respectiva posição do alelo normal, com possibilidade da realização de amplificação gênica alelo específica e com esses conhecimentos, estabelecer protocolos de aplicação laboratorial para uso na rotina. As amostras de estudo foram constituídas por 20 modelos de mutações pertencentes a portadores das mesmas e que inicialmente apresentavam alterações em seu perfil eletroforético, sendo coletadas ou do próprio sujeito da pesquisa ou obtidas de banco de amostras. Os indivíduos eram de ambos os sexos, com diferentes idades e características raciais (caucasóides e não caucasóides) e pertencentes às diversas classes econômicas. Os resultados obtidos permitem concluir que foi possível padronizar um teste diagnóstico, baseado na amplificação gênica alelo específica (PCR-AE) e na amplificação gênica multiplex (PCR-Multiplex).

The hemoglobinopathies are a group of hereditary hemoglobin disorders with worldwide distribution, meeting Brazilian population significantly; being decurrent from structural genes alterations, responsible for hemoglobin variants or in regulatory genes, results the thalassemia. The results permit us to conclude that it was possible to standardize a diagnostic test, based on allele-specific amplification (PCR-AE) and multiplex PCR assay. The applicability of these methodologies give us confidence on results interpretation, and it is easy of execution, and with cost around 25% less of methods that uses restriction enzyme analysis, and can offer us a laboratory diagnostic in a short time. The methodologies or association of obtained knowledge gave us the possibility to identify homozygous, heterozygous and interactions, and was possible to establish specific protocols to identify hemoglobinopathies that attacks our population, and can be used on laboratorial routines.

Pós-graduação em Biociências e Biotecnologia Aplicadas à Farmácia - FCFAR

Universidade Estadual Paulista (UNESP)

Country
Brazil
Keywords

Hemoglobinopathies, Talassemia, Hemoglobinopatias, Hematologia, Multiplex

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green