Estudo calcula idade dos cachorros equivalente à dos humanos

Não basta multiplicar os anos de vida do cão por 7 Pixabay/Reprodução

Pesquisadores da Universidade da de San Diego, nos EUA, publicaram um estudo, na última quinta-feira (2), que apresenta uma forma mais precisa para calcular quantos anos os cachorros teriam se fossem humanos.

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Uma conhecida “fórmula” para fazer essa conversão de idade multiplicava por 7 os anos de vida do animal. Assim, um cachorro de 2 anos teria 14 em 'anos humanos’.

De acordo com o estudo, os cães envelhecem de forma muito mais rápida, mas o desenvolvimento não acontece como uma curva reta, diferentemente dos humanos.

“Um cachorro de um ano tem a idade similar a um humano de 30, e, com 4 anos, os cães podem ser comparados a humanos de 52 anos. Quanto mais velhos os cachorros ficam, mais devagar envelhecem”, explica Trey Ideker, líder da pesquisa e professor da Universidade de San Diego.

Gráfico mostra proporção em envelhecimento de um cachorro em relação aos humanos Divulgação/ UCSD

O resultado da pesquisa apresenta um novo “relógio genético” que determina a idade com base no desenvolvimento das células e suas mudanças químicas. Compostos, como a methiolamina, estão presentes em células mais velhas mesmo que o DNA não tenha se alterado.

“Esses indicadores são como pistas da idade do genoma. Podem ser comparadas às rugas no rosto de pessoas mais idosas, denunciam a idade”, continua Ideker.

De acordo com o pesquisador, a descoberta permite a criação de produtos específicos para cada idade do animal, além de auxiliar nos testes de novos remédios para cães e até para paciente humanos, baseados na genética de cada um.

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Cãozinho não sai de casa sem um de seus bichinhos de pelúcia

Este texto foi publicado primeiro em http://noticias.r7.com/tecnologia-e-ciencia/estudo-calcula-idade-dos-cachorros-equivalente-a-dos-humanos-07072020

Via RSS publicado em https://vitorolig.tumblr.com/post/622968927316803584

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