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When someone suffers a stroke, there is poor blood flow to the brain, and this results in the death of brain cells. Dead fragments of the brain don’t heal like normal muscle or body tissue — they liquify, and this liquid brain stays in the skull, right next to the healthy brain, for a long time.
Scientists at the UA’s College of Medicine found this liquefied brain tissue is toxic and can leak into the remaining healthy portion of the brain over time, potentially causing harm.
“Most people probably assume that the brain heals in the same way as other tissues,” said Kristian Doyle, PhD, assistant professor of Immunobiology at UA. “But it doesn’t; dead brain tissue doesn’t just heal and go away like other bodily injuries. Instead it liquefies and remains in this liquefactive state for a long time.”
These new findings may open the door for developing new treatments to fight dementia after a stroke. Roughly 10 million people survive a stroke annually. About one-third of which will develop dementia for unclear reasons. It is hypothesized that if the brain is injured near the hippocampus (the portion of the brain responsible for memory) this slow leak of toxic fluid can cause neuron loss in the brain and lead to memory problems.
“This work really challenges the old paradigms and breaks new ground critical for our understanding of stroke and its consequences,” said doctor Janko Nikolich-Zugich, chair of the UA Department of Immunobiology. “Thanks to this research, we now will be able to consider new and different stroke therapies.”
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"One thing we learned is that it’s extremely hard to transform low-performing schools."
"We have also worked with districts across the country to help them improve the quality of teaching. . . . But we haven’t seen the large impact we had hoped for."
"How did our teacher effectiveness work do on these three tests? Its effect on students’ learning was mixed."
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It looked as if Arizona Senate candidate Kelli Ward had scored a big endorsement: On Oct. 28, she posted a link on her campaign website and blasted out a Facebook post, quoting extensively from a column in the Arizona Monitor.Hours after the Politico report, the Monitor went offline, which goes to show that cockroaches do scatter once the light hits them.
Ticking off the names of Ward’s competitors in the Republican primary to replace Sen. Jeff Flake, the Monitor declared: “They all, despite how much some of them profess their love and devotion to President Trump, didn’t have the stones to run against Jeff Flake and will have made the ‘brave’ decision to run for Senate only after Flake decided he wasn’t going to run … Kelli Ward is your woman.”
There was just one problem: Despite its reputable sounding name, the Arizona Monitor is not a real news site. It is an anonymous, pro-Ward blog that has referred to her primary opponent Martha McSally as “Shifty McSally,” frequently blasted Flake and, at the top of its home page, proclaims its mission as “Striking Fear into the Heart of the Establishment.” The site launched just a few weeks before publishing the endorsement, and its domain registration is hidden, masking the identity of its owner. On its Facebook page, it is classified as a news site, but scant other information is offered.
The Arizona Monitor seems to be part of a growing trend of conservative political-messaging sites with names that mimic those of mainstream news organizations and whose favored candidates then tout their stories and endorsements as if they were from independent journalists. It’s a phenomenon that spans the country from northern New England, where the anonymous Maine Examiner wreaked havoc on a recent mayoral election, all the way out to California, where Rep. Devin Nunes launched — as reported by POLITICO— his own so-called news outlet, the California Republican.