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One step closer to a brain prosthesis for the blind: Human Brain Project-supported innovation
Human Brain Project research has helped lay the foundation for a brain implant that could one day give blind people their sight back. Recent discoveries at the Netherlands Institute for Neuroscience (NIN) show that in monkeys, newly developed high-resolution implants in the visual cortex make it possible to recognize artificially induced images. The findings were […]
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Two Caltech Faculty Receive NIH BRAIN Grants
Two TCCI®-affiliated researchers at Caltech have received funding for neuroscience projects from the National Institutes of Health’s Brain Research through Advancing Innovative Neurotechnologies (BRAIN) Initiative. Joe Parker, Assistant Professor of Biology and Biological Engineering, is the lead investigator on a project that aims to study the brain circuits that control behavioral interactions between animals. […]
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What social distancing does to a brain
Have you recently wondered how social-distancing and self-isolation may be affecting your brain? An international research team led by Erin Schuman from the Max Planck Institute for Brain Research discovered a brain molecule that functions as a “thermometer” for the presence of others in an animal’s environment. Zebrafish “feel” the presence of others via mechanosensation […]
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Major depressive disorder may be defined by a distinct gut microbiome
Scientists have identified 3 bacteriophages, 47 bacterial species, and 50 fecal metabolites that were significantly more or less abundant in people with major depressive disorder (MDD) compared with healthy controls, according to a study in 311 individuals. The findings provide evidence that MDD may be characterized by gut microbiome disturbances. Jian Yang and colleagues also […]
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Common neural circuit and potential target for anxiety and obsessive-compulsive disorder
In a study recently published in PNAS, Dr. Jing-Ning Zhu’s group in Nanjing University reports that a glutamatergic neuronal circuitry from the prelimbic prefrontal cortex (PrL) to the nucleus accumbens (NAc) core is responsible for co-occurrence of anxiety- and obsessive-compulsive-like behaviors. Notably, activation of the histamine presynaptic H3 heteroreceptor localized in the PrL-NAc glutamatergic terminals […]
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Scientists reverse age-related vision loss, eye damage from glaucoma in mice
Proof-of-concept study represents first successful attempt to reverse the aging clock in animals through epigenetic reprogramming. Scientists turned on embryonic genes to reprogram cells of mouse retinas. Approach reversed glaucoma-induced eye damage in animals. Approach also restored age-related vision loss in elderly mice. Work spells promise for using same approach in other tissues, organs beyond […]
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Study identifies novel mechanisms that cause protein clumping in brain diseases
A team of researchers at the Case Western Reserve University School of Medicine has taken a major step toward understanding the mechanisms involved in the formation of large clumps of tau protein, a hallmark of Alzheimer’s disease and several other neurodegenerative disorders. Their findings may help to better understand the pathological process and possibly lead […]
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Drug Reverses Age-Related Mental Decline Within Days
Just a few doses of an experimental drug can reverse age-related declines in memory and mental flexibility in mice, according to a new study by UC San Francisco scientists. The drug, called ISRIB, has already been shown in laboratory studies to restore memory function months after traumatic brain injury (TBI), reverse cognitive impairments in Down […]
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新的检测方式可以在症状出现之前发现阿尔茨海默病的早早期变化
在整个疾病过程中,β-淀粉样蛋白和磷酸化tau蛋白(p-tau)从大脑释放到脑脊液中,释放的蛋白质的量被用作阿尔茨海默病临床诊断的可靠替代指标。 正常情况下,脑脊液中淀粉样蛋白水平在p-tau出现前几年就会出现异常。目前p-tau的临床测试结果在记忆缺陷开始进展时变得异常,这使得人们很难在早早期阶段识别出患者。该研究旨在探测阿尔兹海默病早早期,p-tau的变化模式,研究人员测试了三种新的CSF p-tau生物标记,它们在苏氨酸181和苏氨酸217上被N末端伴侣抗体磷酸化,在苏氨酸231上被中间区域伴侣抗体磷酸化。将它们与作为p-tau测量金标准的Elecsys法作比较。 该研究证明当仅检测到β-淀粉样蛋白(Aβ)病理的细微变化时,这些新的p-tau生物标记物在临床前阿尔茨海默氏症中增加得更为显著,并且可以准确地区分Aβ阳性和Aβ阴性的认知能力未受损的个体。此外,该研究还发现,新型血浆N‐末端 p‐tau 181生物标志物在临床前阶段轻度但显著升高。这些结果支持了阿尔茨海默病临床前神经元tau代谢的早期变化(可能是对Aβ暴露的反应)可以通过这些新的p‐tau检测方法检测出来。 该研究可能改变未来的临床实践,改善无症状和有症状阶段的阿尔茨海默氏病的诊断。