neuroscience – Lifeboat News: The Blog https://lifeboat.com/blog Safeguarding Humanity Mon, 16 Dec 2024 16:30:34 +0000 en-US hourly 1 https://wordpress.org/?v=6.7.1 Uploading the brain to live forever might work https://lifeboat.com/blog/2024/12/uploading-the-brain-to-live-forever-might-work https://lifeboat.com/blog/2024/12/uploading-the-brain-to-live-forever-might-work#respond Mon, 16 Dec 2024 16:30:34 +0000 https://lifeboat.com/blog/2024/12/uploading-the-brain-to-live-forever-might-work

Dr. Ariel Zeleznikow-Johnston hopes to pick up the movement where Jones left off, albeit with the significant twist that his version does not require freezing. A research fellow at Melbourne’s Monash University, Zeleznikow-Johnston wrote the new book, “The Future Loves You: How and Why We Should Abolish Death,” which makes the case that cryopreservation is possible and should be more widely available. Rejecting the popular notion that death endows life with meaning as “palliative philosophy,” Zeleznikow-Johnston’s book instead argues a human’s connectome — a high-resolution map of all their brain connections — could be theoretically recorded perfectly before they die.

Once that happens, that same internal brain activity could be recreated through high-powered computers, while a new brain is grown in a vat via stem cells or some combination of the two. As such, Zeleznikow-Johnston is proposing a spiritual descendant to the cryonics movement (which he dismisses as “unscientific” and “unsubstantiated”), one where the focus is not on preserving tissues but on the “data,” so to speak, of our distinct connectomes.

“We have very strong evidence that the static structure of the neurons is enough to hold onto someone’s memories and personality.”

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Schizophrenia’s Hidden Trigger: Scientists Discover Unexpected Link to Skull Development https://lifeboat.com/blog/2024/12/schizophrenias-hidden-trigger-scientists-discover-unexpected-link-to-skull-development https://lifeboat.com/blog/2024/12/schizophrenias-hidden-trigger-scientists-discover-unexpected-link-to-skull-development#respond Mon, 16 Dec 2024 11:06:13 +0000 https://lifeboat.com/blog/2024/12/schizophrenias-hidden-trigger-scientists-discover-unexpected-link-to-skull-development

22q11.2 deletion syndrome (22q) raises schizophrenia risk through skull malformations linked to the Tbx1 gene, affecting cerebellar development. This highlights how non-brain factors like bone defects can influence neurological disorders.

The chromosomal disorder 22q11.2 deletion syndrome (22q) has emerged as one of the strongest risk factors for schizophrenia. Scientists at St. Jude Children’s Research Hospital identified malformed regions of the cerebellum in both laboratory models and patients with 22q, attributing these malformations to improper skull formation.

Additionally, the researchers linked the skull malformation to the loss of a single gene: Tbx1. This research highlights that neurological disorders can arise from sources outside the nervous system, such as defects in skull development. The findings were published in Nature Communications.

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Cancer drug may reverse Alzheimer’s disease https://lifeboat.com/blog/2024/12/cancer-drug-may-reverse-alzheimers-disease https://lifeboat.com/blog/2024/12/cancer-drug-may-reverse-alzheimers-disease#respond Mon, 16 Dec 2024 09:56:44 +0000 https://lifeboat.com/blog/2024/12/cancer-drug-may-reverse-alzheimers-disease

Because glucose metabolism is disrupted in several different neurodegenerative disorders, this treatment strategy also shows promise for other brain conditions.

“The beneficial effect on brain metabolism by IDO1 inhibition cuts across different types of pathology,” Andreasson said.

“It is exciting to think that this may be a more general mechanism that could be targeted in other neurodegenerative disorders, like Parkinson’s disease, where you have accumulation of a-synuclein, or ALS, where there is accumulation of tdp-43.”

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SUMO Proteins Trigger Brain Stem Cell Reactivation for Repair https://lifeboat.com/blog/2024/12/sumo-proteins-trigger-brain-stem-cell-reactivation-for-repair https://lifeboat.com/blog/2024/12/sumo-proteins-trigger-brain-stem-cell-reactivation-for-repair#respond Mon, 16 Dec 2024 01:26:54 +0000 https://lifeboat.com/blog/2024/12/sumo-proteins-trigger-brain-stem-cell-reactivation-for-repair

Summary: SUMO proteins play a key role in activating dormant neural stem cells, vital for brain repair and regeneration. This finding, centered on a process called SUMOylation, reveals how neural stem cells can be “woken up” to aid in brain recovery, offering potential treatments for neurodegenerative diseases.

SUMO proteins regulate neural stem cell reactivation by modifying the Hippo pathway, crucial for cell growth and repair. The study’s insights lay foundational groundwork for developing regenerative therapies to combat conditions like Alzheimer’s and Parkinson’s disease.

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Does Treating Brain Edema in Patients with Large Hemispheric Infarction Help? https://lifeboat.com/blog/2024/12/does-treating-brain-edema-in-patients-with-large-hemispheric-infarction-help https://lifeboat.com/blog/2024/12/does-treating-brain-edema-in-patients-with-large-hemispheric-infarction-help#respond Sun, 15 Dec 2024 20:29:37 +0000 https://lifeboat.com/blog/2024/12/does-treating-brain-edema-in-patients-with-large-hemispheric-infarction-help

Brain edema can accompany large ischemic strokes and can increase stroke-related morbidity and mortality. The past few decades have seen no advances in pharmacologic treatment of brain edema. These investigators conducted a manufacturer-funded, randomized, placebo-controlled trial of glibenclamide, a sulfonylurea 1–receptor inhibitor that can decrease brain edema. (Glibenclamide is approved to treat type 2 diabetes.) In a previous study, it was associated with fewer deaths from neurologic causes, but its use in patients with stroke is not widespread.

Eligible patients had large ischemic strokes that could be treated within 10 hours of onset. A large hemispheric infarct in at least the middle cerebral artery territory was defined as either an Alberta Stroke Program Early CT Score of 1 to 5 or lesion volumes of 80 mL to 300 mL on computed-tomography perfusion or diffusion-weighted imaging. Glibenclamide (8.6 mg) was given to half the study participants intravenously over 72 hours.

The study was halted early due to underenrollment. Of 535 enrolled patients, 431 were in the intended age range (18–70) and had complete data (mean age, 58; 33% women; median NIH Stroke Scale [NIHSS] score, 19). Treatment began at an average of 9 hours after symptom onset. No favorable shift with glibenclamide occurred on the primary outcome, the 90-day modified Rankin Scale (mRS). Mortality was similar in the two groups (glibenclamide, 32%; placebo, 29%). Hypoglycemia was seen in 6% of glibenclamide recipients and 2% of placebo recipients. Subgroup analysis revealed a signal of potential benefit with glibenclamide in patients with NIHSS scores of 20 or less.

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If Humans Die Out, Octopuses Already Have the Chops to Build the Next Civilization, Scientist Claims https://lifeboat.com/blog/2024/12/if-humans-die-out-octopuses-already-have-the-chops-to-build-the-next-civilization-scientist-claims https://lifeboat.com/blog/2024/12/if-humans-die-out-octopuses-already-have-the-chops-to-build-the-next-civilization-scientist-claims#respond Sun, 15 Dec 2024 20:26:49 +0000 https://lifeboat.com/blog/2024/12/if-humans-die-out-octopuses-already-have-the-chops-to-build-the-next-civilization-scientist-claims

With brains that process information almost like a computer, the sea creatures already use tools and can be social. But they need to make a few changes before they can take over the world.

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When Muscles Work Out, they Help Neurons to Grow https://lifeboat.com/blog/2024/12/when-muscles-work-out-they-help-neurons-to-grow https://lifeboat.com/blog/2024/12/when-muscles-work-out-they-help-neurons-to-grow#respond Sun, 15 Dec 2024 20:23:13 +0000 https://lifeboat.com/blog/2024/12/when-muscles-work-out-they-help-neurons-to-grow

The findings suggest that biochemical and physical effects of exercise could help heal nerves. There’s no doubt that exercise does a body good. Regular activity not only strengthens muscles but can bolster our bones, blood vessels, and immune system.

Now, MIT engineers have found that exercise can also have benefits at the level of individual neurons. They observed that when muscles contract during exercise, they release a soup of biochemical signals called myokines. In the presence of these muscle-generated signals, neurons grew 4X farther compared to neurons that were not exposed to myokines. These cellular-level experiments suggest that exercise can have a significant biochemical effect on nerve growth.

Surprisingly, the researchers also found that neurons respond not only to the biochemical signals of exercise but also to its physical impacts. The team observed that when neurons are repeatedly pulled back and forth, similarly to how muscles contract and expand during exercise, the neurons grow just as much as when they are exposed to a muscle’s myokines.

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Genetic Mechanism Links Emotional Experiences to Behavior Changes https://lifeboat.com/blog/2024/12/genetic-mechanism-links-emotional-experiences-to-behavior-changes https://lifeboat.com/blog/2024/12/genetic-mechanism-links-emotional-experiences-to-behavior-changes#respond Sun, 15 Dec 2024 15:33:08 +0000 https://lifeboat.com/blog/2024/12/genetic-mechanism-links-emotional-experiences-to-behavior-changes

Summary: Researchers have identified a genetic mechanism that regulates behavioral adaptations to emotional experiences by forming R-loops, unique RNA: DNA structures that activate target genes. The study focused on NPAS4, a gene implicated in stress and drug addiction, showing how blocking R-loops prevents maladaptive behaviors like cocaine seeking and stress-induced anhedonia in mice.

This mechanism demonstrates how emotional experiences influence brain circuits by altering gene expression through enhancer RNA. The findings could pave the way for RNA-based therapies to treat psychiatric disorders linked to stress and substance use.

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Brain organoids and assembloids are new models for elucidating, treating neurodevelopmental disorders https://lifeboat.com/blog/2024/12/brain-organoids-and-assembloids-are-new-models-for-elucidating-treating-neurodevelopmental-disorders https://lifeboat.com/blog/2024/12/brain-organoids-and-assembloids-are-new-models-for-elucidating-treating-neurodevelopmental-disorders#respond Sun, 15 Dec 2024 05:06:40 +0000 https://lifeboat.com/blog/2024/12/brain-organoids-and-assembloids-are-new-models-for-elucidating-treating-neurodevelopmental-disorders

But Kelby, who was training to become an operating room nurse, realized Holden’s episodes reminded him of what he was learning about warning signs for stroke. JJ called Holden’s cardiologist in Utah and asked for a detailed neurologic evaluation, which enabled the mysterious episodes to be diagnosed as seizures. Holden began taking anti-seizure medication, which helped, to his parents’ great relief.

A few months after Holden was born, Sergiu Pasca, MD, arrived at Stanford Medicine to pursue a postdoctoral fellowship in the lab of Ricardo Dolmetsch, PhD, then an assistant professor of neurobiology, who was redirecting his research to autism spectrum disorder. At the time, Pasca did not know the Hulet family. But his work soon became focused on the disorder that has shaped Holden’s life.

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Light-induced gene therapy disables cancer cells’ mitochondria https://lifeboat.com/blog/2024/12/light-induced-gene-therapy-disables-cancer-cells-mitochondria https://lifeboat.com/blog/2024/12/light-induced-gene-therapy-disables-cancer-cells-mitochondria#respond Sun, 15 Dec 2024 00:23:43 +0000 https://lifeboat.com/blog/2024/12/light-induced-gene-therapy-disables-cancer-cells-mitochondria

Researchers are shining a light on cancer cells’ energy centers—literally—to damage these power sources and trigger widespread cancer cell death. In a new study, scientists combined strategies to deliver energy-disrupting gene therapy using nanoparticles manufactured to zero in only on cancer cells. Experiments showed the targeted therapy is effective at shrinking glioblastoma brain tumors and aggressive breast cancer tumors in mice.

The research team overcame a significant challenge to break up structures inside these cellular energy centers, called mitochondria, with a technique that induces light-activated electrical currents inside the cell. They named the technology mLumiOpto.

“We disrupt the membrane, so mitochondria cannot work functionally to produce energy or work as a signaling hub. This causes programmed followed by DNA damage—our investigations showed these two mechanisms are involved and kill the ,” said co-lead author Lufang Zhou, professor of biomedical engineering and surgery at The Ohio State University. “This is how the technology works by design.”

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