Kimiyyar jijiyoyi
Kai ba komai ba ne face tarin ƙwayoyin jijiyoyi da ake kira neurons.
— (1994)
Kuda na iya rasa wari amma har yanzu ta juya ta koma wajensa. A gajimaren kama-da-wane, alkiblar da ta tuna ta taimaka
Kudan 'ya'yan itace da aka ɗaure sun riƙa komawa zuwa iyakar wari bayan sun shiga iska mai tsafta. Hali, modeling da perturbations na jijiyoyi suna goyon bayan ƙaramin ƙwaƙwalwar alkibla, ba cikakkiyar taswira ba. Sakamakon ya fito ne daga gwajin virtual reality da aka sarrafa kuma bai nuna cewa ana amfani da dabara iri ɗaya a free natural flight ba.
Gene da ke fitar da toxic tau daga neurons yana share shi amma kuma yana taimaka masa ya yadu
Tau pathology tana iya motsawa daga neuron zuwa neuron a cutar Alzheimer, amma hanyar da tau ke fita daga cell ba ta kasance a fili ba. Wani bincike a Cell ya gano cewa Arc — neuronal gene da ke samar da virus-like capsids — yana haɗuwa da tau kai tsaye, yana saka shi cikin extracellular vesicles da neurons ke fitarwa. A mice da cultured cells, cire Arc ya rage tau mai iya fara sabon aggregation a vesicles kuma ya kusan dakatar da watsuwarsa daga cell zuwa cell; a vesicles daga kwakwalwar mutane masu Alzheimer, matakin Arc ya tafi tare da phosphorylated tau. Amma mechanism ɗin yana da gefe biyu: packaging ɗin yana taimaka wa neuron ya fitar da toxic tau, kuma a lokaci guda yana taimaka wa tau ya yaɗu. Mice marasa Arc sun tara ƙarin tau a neurons kuma sun nuna ɗan ƙarin cell death da wuri. Wannan mechanism ne a models tare da correlation a mutane — ba dalilin Alzheimer da aka tabbatar ba, kuma ba therapy ba.