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An international team of researchers has provided valuable insights into the brain’s noradrenaline (NA) system, which has been a longtime target for medications to treat attention-deficit/hyperactivity disorder, depression, and anxiety.

Equally important beyond the findings is the groundbreaking methodology that the researchers developed to record real-time chemical activity from standard clinical electrodes which are routinely implanted for epilepsy monitoring.

Published online in the journal Current Biology on Monday (Oct. 23), the research not only provides new insights into the brain’s chemistry, which could have implications for a wide array of medical conditions, it also highlights a remarkable new capacity to acquire data from the living human brain.

The researchers used human stem cells to create a model of early brain development — organoids.

Super-resolution image of human stem cell-derived Microglia cells with labeled mitochondria (yellow), nucleus (magenta), and actin filaments (cyan). These Microglia cells help in the maturation of neurons in human brain organoid models. Photo credit: A*STAR’s SIgN

An international team of scientists has uncovered the vital role of microglia, the immune cells in the brain that acts as its dedicated defense team, in early human brain development.

Continue reading “New study reveals the critical role of microglia in human brain development” »

Cerebral small vessel disease is a significant cause of aging-related mental decline and accounts for almost half of all dementia cases globally.

Sudok1/iStock.

The research, published in the journal Stem Cell Reports, also suggests a possible drug target to prevent or treat the condition known as cerebral small vessel disease (SVD).

Continue reading “Cambridge team grows blood vessels to investigate brain diseases” »

This is almost like endowing a printer with a set of eyes and a brain, where the eyes observe what is being printed, and then the brain of the machine directs it as to what should be printed next.

Moritz Hocher.

Traditional systems use nozzles to deposit tiny drops of resin, smoothed over with a scraper or roller and then curved with UV light. However, this smoothing limits the materials that could be used since slow-curing resins could be squished or smeared.

Continue reading “This new 3D printer has eyes, a brain, and prints perfectly” »

As implanted devices and commercial headsets advance, what will the real-world impacts be?

Scientists from Centogene, a company focused on rare and neurodegenerative diseases, along with their collaborators at University College London and elsewhere have published a study that links the Acyl-CoA Binding Domain Containing 6 (ACBD6) gene to new forms of early-onset dystonia and parkinsonism. The study is published in Brain in a paper titled, “Bi-allelic ACBD6 variants lead to a neurodevelopmental syndrome with progressive and complex movement disorders.”

Using whole exome sequencing data from 45 patients—23 males and 22 females between the ages of 1 and 50 years old—the researchers identified several novel and ultra-rare bi-allelic predicted loss-of-function variants in ACBD6, which are linked to a unique neurodevelopmental syndrome. The condition is accompanied by complex and progressive cognitive and movement disorders such as dystonia in 94% of cases and parkinsonism in older patients or about 32% of cases.

To test the association between ACBD6 and the syndrome, the researchers used zebrafish and frog knockouts. According to tests described in the paper, they observed similar phenotypes to those of affected individuals such as movement disorders, seizures, and facial dysmorphology in the zebrafish models. Their observations of the effects in zebrafish suggest “a combination of muscle and neuronal degeneration leading to movement abnormalities” resulting from the loss of the gene. When they assessed the effects of inactivating the gene in frogs, they observed reported failures in cell movement during gastrulation as a result of the gene’s loss.

Summary: Researchers made a breakthrough in memory research by genetically modifying the LIMK1 protein, crucial for memory, to be controlled by the drug rapamycin.

This study demonstrates the ability to enhance memory functions by manipulating synaptic plasticity in the brain.

The engineered protein showed significant memory improvement in animal models with age-related cognitive decline, offering potential for innovative treatments for neuropsychiatric diseases like dementia. This ‘chemogenetic’ approach, blending genetics and chemistry, opens new avenues in neurological research and therapy.

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Continue reading “Slow Wave Sleep % Loss Is Associated With An Increased Dementia Risk” »

Summary: Researchers developed an experimental computing system, resembling a biological brain, that successfully identified handwritten numbers with a 93.4% accuracy rate.

This breakthrough was achieved using a novel training algorithm providing continuous real-time feedback, outperforming traditional batch data processing methods which yielded 91.4% accuracy.

The system’s design features a self-organizing network of nanowires on electrodes, with memory and processing capabilities interwoven, unlike conventional computers with separate modules.