blood-brain barrier

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  • noun

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a mechanism that creates a barrier between brain tissues and circulating blood

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In this transgenic mouse, they turned off Adora2a in the endothelial cells at 12 weeks, and at 16 weeks, when mice should have been exhibiting cognitive impairment and a leaky blood brain barrier; they instead had normal cognition and barrier function and no inflammation.
While it's typically hard to jump from mice to men, the fact that this type of work actually started with human findings likely means that avoiding insulin resistance could potentially halt the increased permeability of the blood brain barrier and decrease in cognitive function, Stranahan says.
The blood brain barrier provides a layer of protection for the brain from harmful or foreign substances that may injure the brain [11].
The blood brain barrier (BBB) and blood cerebrospinal fluid barrier (BCSF) possess a variety of carrier-mediated transfer systems to support and protect brain function [9].
In terms of cellular transport mechanisms, the blood brain barrier (BBB) represents a very important biological barrier between the brain and systemic circulation.
After 12 weeks of a high-cholesterol diet, the blood brain barrier in those given caffeine was far more intact than in those given no caffeine.
Researcher Jonathan Geiger said: "For the first time, we have shown chronic ingestion of caffeine protects the blood brain barrier from cholesterol-induced leakage."
Obviously, some compounds like alcohol and caffeine cross the blood brain barrier easily, but these are the exceptions.
Ultrasound company INSIGHTEC reported on Monday the receipt of approval from the US Food and Drug Administration (FDA) to evaluate the safety and feasibility of the Exablate Neuro trial for disrupting the blood brain barrier (BBB) in patients with Glioblastoma.
The study by University of Rochester Medical Center (URMC) Department of Neurosurgery showed that copper can accumulate in the brain and cause the blood brain barrier to break down, resulting in the toxic accumulation of the protein amyloid beta, a by-product of cellular activity.
Using nasal mucosa, or the lining of the nose, scientists have been able to breach the blood brain barrier that has prevented drug therapies entering the brain.
However, curcumin cannot pass the blood brain barrier which protects the brain from potentially toxic molecules.
Studies have found that compounds in Crinum and Crytanthus - South African species of snowdrops and daffodils - are able to pass through the blood brain barrier, the defensive wall that keeps the brain isolated.
London, Sep 22 (ANI): Researchers at University of Iowa have discovered a way to turn the blood brain barrier into a production and delivery system for getting therapeutic molecules directly into brain cells.
Satoshi Uchiyama, MD, a postdoctoral fellow in the Nizet Laboratory and lead author on the study, said: "Our tissue culture studies showed that the NanA protein was both necessary and sufficient for bacterial penetration of the blood brain barrier endothelial cells."