Agentes quelantes sulfidrílicos: uma revisão

Autores

  • Francielli Weber Santos Departamento de Química, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.
  • Cristina Wayne Nogueira Departamento de Química, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.

DOI:

https://doi.org/10.5902/2179460X27243

Resumo

O aumento do uso industrial de metais como o berílio, o cádmio, o cobre, o chumbo, o magnésio e o níquel inevitavelmente resultam em um ambiente mais contaminado. Por esta razão, as intoxicações ambientais crônicas não são raras e resultam em uma preocupação para a saúde humana. A terapia que utiliza os agentes quelantes tem sido a base do tratamento médico de intoxicações por metal desde a década de 40. Os agentes quelantes são utilizados clinicamente com antídotos para intoxicações agudas e crônicas por metal. Estes compostos atuam aumentando a excreção de elementos tóxicos, como o arsênio, o cádmio, o chumbo e o mercúrio os quais são bem conhecidos pela toxicidade que desenvolvem. Além disso, eles também diminuem a toxicidade do metal por prevenir a ligação destes a moléculas celulares alvo. Entretanto, existem muitas questões referentes à utilização terapêutica dos agentes quelantes ditiólicos, incluindo evidências de efeitos colaterais indesejáveis, ainda obscuras. Os aspectos expostos acima indicam claramente que experimentos mais detalhados e experimentos clínicos são necessários para melhor estabelecer as propriedades toxicológicas do BAL, DMPS e DMSA.

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Publicado

2003-12-09

Como Citar

Santos, F. W., & Nogueira, C. W. (2003). Agentes quelantes sulfidrílicos: uma revisão. Ciência E Natura, 25(25), 149–162. https://doi.org/10.5902/2179460X27243