Drogas que agem sobre inflamação no cérebro podem reverter demência

Com o envelhecimento, estrutura que protege o sistema nervoso central, bloqueando substâncias tóxicas, perde eficiência

O declínio cognitivo que ameaça o envelhecimento poderá ser detido, ou pelo menos retardado, através de drogas que eliminariam processos inflamatórios no cérebro. A incrível novidade foi publicada ontem na revista médica “Science Translational Medicine”, criada pela Associação Americana para o Avanço da Ciência. Trata-se de um trabalho conjunto dos pesquisadores Daniela Kaufer, da Universidade de Berkeley, Califórnia, e Alon Friedman, das universidades Ben-Gurion do Negev (Israel) e Dalhousie (Canadá). Embora ainda restrito a experiências feitas com camundongos, tem grande potencial de aplicação em humanos.

Os cérebros de ratinhos senis que receberam a droga passaram a se assemelhar aos de cobaias mais jovens o que, segundo a cientista, é promissor. “Nossa tendência é pensar o cérebro mais velho da mesma forma como encaramos a degeneração neurológica: como se a idade avançada envolvesse a perda de funções e a morte das células. No entanto, essa descoberta nos conta uma nova história sobre por que o cérebro não está funcionando bem: é por causa de uma carga inflamatória que pode ser combatida”, afirmou a doutora Kaufer.

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I’m A Surgeon. Here’s What Happened When I Held My Patient’s Hand And Prayed For Her.

 

 

 

 

 

 

Several years ago, my business hit rock bottom. As a young, traditionally trained surgeon, I was taught the old surgery adage: “To cut is to cure.” Following this mantra early in my practice led me into a deep, dark hole. I had operated on many patients, but several of them were unhappy, and some had suffered complications. In the small town where I practiced, the word began to spread that perhaps I wasn’t a plastic surgeon worth seeing.

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Seeing the Beautiful Intelligence of Microbes

Bacterial biofilms and slime molds are more than crude patches of goo. Detailed time-lapse microscopy reveals how they sense and explore their surroundings, communicate with their neighbors and adaptively reshape themselves.

Intelligence is not a quality to attribute lightly to microbes. There is no reason to think that bacteria, slime molds and similar single-cell forms of life have awareness, understanding or other capacities implicit in real intellect.

But particularly when these cells commune in great numbers, their startling collective talents for solving problems and controlling their environment emerge.

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Toshiba says its device tests for 13 cancer types with 99% accuracy from a single drop of blood

Toshiba Corp. has developed technology to detect 13 types of cancer from a single drop of blood with 99 percent accuracy, the company announced Monday.

Toshiba developed the diagnosis method together with the National Cancer Center Research Institute and Tokyo Medical University, and hopes to commercialize it in “several years” after starting a trial next year.

The method could be used to treat cancer in its early stage, it said. Leer Más