Sondas moleculares para a deteção de placas β-amilóide na doença de Alzheimer

Autores

  • Letícia Quental Grupo de Ciências Radiofarmacêuticas, Campus Tecnológico e Nuclear, Instituto Superior Técnico (CTN/IST). Lisboa, Portugal.
  • Goreti Ribeiro Morais Grupo de Ciências Radiofarmacêuticas, Campus Tecnológico e Nuclear, Instituto Superior Técnico (CTN/IST). Lisboa, Portugal.
  • Isabel Santos Grupo de Ciências Radiofarmacêuticas, Campus Tecnológico e Nuclear, Instituto Superior Técnico (CTN/IST). Lisboa, Portugal.
  • António Paulo Grupo de Ciências Radiofarmacêuticas, Campus Tecnológico e Nuclear, Instituto Superior Técnico (CTN/IST). Lisboa, Portugal.

DOI:

https://doi.org/10.25758/set.634

Palavras-chave:

Doença de Alzheimer, Agregação da β-amilóide, Imagiologia molecular, Sondas moleculares

Resumo

A formação de estruturas amilóides é uma característica neuropatológica comum nas várias doenças neurodegenerativas, como a doença de Alzheimer e de Parkinson. Até à data, o diagnóstico destas doenças apenas é conseguido post-mortem por estudos histoquímicos com corantes, como a Tioflavina T e o vermelho do congo. Durante os últimos anos têm sido desenvolvidos vários compostos com afinidade para agregados de β-amilóide para visualização dessas estruturas por tomografia de emissão de positrões (PET) e tomografia computadorizada de emissão de fotão único (SPECT). Neste trabalho pretendemos apresentar as principais sondas radioativas com potencial para imagiologia de estruturas amilóides, em especial aquelas que entraram em ensaios clínicos e se encontram em diferentes etapas de aprovação pela FDA.

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Publicado

15-11-2013

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Sondas moleculares para a deteção de placas β-amilóide na doença de Alzheimer. (2013). Saúde & Tecnologia, 10, 05-09. https://doi.org/10.25758/set.634