Teste é 80% preciso na previsão de doenças, segundo seus desenvolvedores

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Quer saber mais sobre o exame que prevê demência 9 anos antes?

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Teste é 80% preciso na previsão de doenças, segundo seus desenvolvedores

Exame prevê demência 9 anos antes

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Cientistas de Londres desenvolveram um teste que pode prever a demência até nove anos antes do diagnóstico com 80% de precisão, superando os métodos tradicionais como testes de memória.

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O teste, desenvolvido na Queen Mary University, analisa ressonâncias magnéticas cerebrais. É mais preciso do que os métodos atuais usados para diagnosticar demência.

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As descobertas foram publicadas na revista Nature Mental Health. O estudo envolveu a análise de exames cerebrais de mais de 1.100 pessoas do UK Biobank.

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A pesquisa focou na rede de modo padrão do cérebro, a primeira afetada pela doença de Alzheimer. Esta rede conecta diferentes regiões para funções cognitivas específicas.

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Entre os participantes com demência, 81 fizeram exames cerebrais anos antes do diagnóstico. A redução da conectividade na rede de modo padrão foi um indicador chave.

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O teste foi 80% preciso na previsão de demência e pode prever o tempo até o diagnóstico com uma margem de erro de dois anos, auxiliando no desenvolvimento de tratamentos preventivos.

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O neurologista Charles Marshall destaca que prever quem desenvolverá demência é vital para criar tratamentos preventivos, melhorando a precisão da detecção da doença.

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A demência afeta 55 milhões de pessoas globalmente, com expectativa de triplicar até 2050. No Brasil, 1,76 milhão têm demência, podendo chegar a 5,5 milhões até 2050.

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Idade avançada, histórico familiar, certos genes, traumas cranianos, doenças crônicas e hábitos de vida não saudáveis são fatores de risco para a demência.

Quer saber mais sobre o exame que prevê demência 9 anos antes?

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