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Archive for the ‘neuroscience’ category: Page 131

Jan 10, 2024

Oxford starts human testing of Nipah virus vaccine

Posted by in categories: biotech/medical, neuroscience

Jan 11 (Reuters) — The University of Oxford said on Thursday it had begun human testing of an experimental vaccine against the brain-swelling Nipah virus that led to outbreaks in India’s Kerala state and other parts of Asia.

There is no vaccine yet for the deadly virus. Nipah was first identified about 25 years ago in Malaysia and has led to outbreaks in Bangladesh, India and Singapore.

The first participants in the Oxford trial received doses of the vaccine over the last week. The shot is based on the same technology as the one used in AstraZeneca (AZN.L) and Serum Institute of India’s COVID-19 shots.

Jan 10, 2024

Ancient human DNA helps explain why northern Europeans have higher multiple sclerosis risk

Posted by in categories: biotech/medical, genetics, neuroscience

Ancient DNA helps explain why northern Europeans have a higher risk of multiple sclerosis than other ancestries: It’s a genetic legacy of horseback-riding cattle herders who swept into the region about 5,000 years ago.

The findings come from a huge project to compare modern DNA with that culled from ancient humans’ teeth and bones — allowing scientists to trace both prehistoric migration and disease-linked genes that tagged along.

When a Bronze Age people called the Yamnaya moved from the steppes of what are now Ukraine and Russia into northwestern Europe, they carried gene variants that today are known to increase people’s risk of multiple sclerosis, researchers reported Wednesday.

Jan 10, 2024

Andrew Melnyk First Person

Posted by in category: neuroscience

In my paper, “A Case for Physicalism about the Human Mind,” I didn’t attempt to defend physicalism about human mentality (henceforth, just physicalism) against the many objections that philosophers, and others, have made to it. Instead, I tried to assemble positive evidence that physicalism is true, while insisting that no aspect of human behavior, including human linguistic behavior, makes it necessary to adopt any kind of dualism about human mentality. In their reply to my paper, Professors Taliaferro and Goetz (henceforth, TG) don’t engage in any detail with my positive case for physicalism[1], and they offer no examples of human behavior that can’t be explained unless some kind of dualism is assumed. Their main objection to my paper is, rather, that, because it only takes account of evidence “from the third-person point of view,” it entirely overlooks “the first-person point of view,” which, they hold, shows us that human mentality has certain features incompatible with physicalism. Examples of such features would be that “a choice is an uncaused mental event,” and that “a reason is a purpose that provides an ultimate and irreducible teleological explanation of that choice.” In my reply to TG, I’ll respond to this objection only; I won’t take up every disagreement I have with TG’s reply.

Before I can respond to TG’s main objection, however, I must clarify it. Since “the first-person point of view” is presumably just the point of view provided by introspection, TG’s main objection must be that introspection of one’s mental states somehow shows one that human mentality has certain features incompatible with physicalism. However, it’s important to distinguish between the following two claims:

(TG1) By introspecting one’s own (say) choices, one acquires some reason to think that they are uncaused mental events.

Jan 10, 2024

3D mini-organs created from human fetus’ brain tissue

Posted by in categories: biotech/medical, neuroscience

Cutting-edge research paves way for cancer treatment.


Scientists have developed 3D mini-organs from human fetal brain tissue that self-organize in vitro. These lab-grown organoids open up a brand-new way of studying how the brain develops.

Jan 10, 2024

Study: chronic pain’s root cause could be a process in the brain

Posted by in category: neuroscience

“We included 151 adults ages 21 to 70 years old with chronic back pain. We found that 66% of participants reported being pain-free or nearly pain-free after pain reprocessing therapy, compared with 20% of people who received a placebo.⁠”


Understanding that chronic back pain originates from within the brain could lead to quicker recovery, a new study finds.

Jan 9, 2024

Volume of gray brain matter significantly lower in people with early onset psychosis, finds study

Posted by in categories: biotech/medical, neuroscience

New research from the Institute of Psychiatry, Psychology & Neuroscience has found an association between a reduction in gray matter in the brain and early onset psychosis (EOP).

The study, published in Molecular Psychiatry, is the largest ever imaging study in EOP and has provided unprecedented levels of detail about the illness. It shows that in contrast to other mental health disorders, people with EOP have a reduced volume of across nearly all regions of their brain. Researchers hope that this detailed mapping could be used to assist in future diagnosis, as well as to track the effects of treatment in patients with EOP.

EOP occurs before the age of 18 during a critical period of development in the brain. Individuals diagnosed with the illness are likely to experience severe and long-lasting symptoms that respond less well to treatment. Despite this, research into EOP has been limited in sample size and statistical power.

Jan 9, 2024

New study finds that traumatic stress is associated with a smaller cerebellum

Posted by in category: neuroscience

Adults with posttraumatic stress disorder (PTSD) have smaller cerebellums, according to new research from a Duke-led brain imaging study.

The cerebellum, a part of the brain well-known for helping to coordinate movement and balance, can influence emotion and memory, which are impacted by PTSD. What isn’t known yet is whether a smaller cerebellum predisposes a person to PTSD or PTSD shrinks the brain region.

“The differences were largely within the posterior lobe, where a lot of the more cognitive functions attributed to the cerebellum seem to localize, as well as the vermis, which is linked to a lot of emotional processing functions,” said Ashley Huggins, Ph.D., the lead author of the report who helped carry out the work as a postdoctoral researcher at Duke in the lab of psychiatrist Raj Morey, M.D.

Jan 9, 2024

Experimental Therapy Eases Alzheimer’s Signs, Symptoms in Mice

Posted by in categories: biotech/medical, genetics, neuroscience

The therapy—developed at the University of Nebraska Medical Center (UNMC)—relies on both the immune system to fight key aspects of Alzheimer’s, plus modified cells that zero in on the brain protein plaques that are a hallmark of the disease.

In patients with Alzheimer’s, amyloid-beta protein forms plaques that prevent nerve cells from signaling each other. One theory is that this might cause irreversible memory loss and behavior changes characteristic of Alzheimer’s disease.

The new study was recently published in the journal Molecular Neurodegeneration. Researchers used genetically modified immune-controlling cells called Tregs to target amyloid-beta.

Jan 9, 2024

Probabilistic perspectives in brain dysfunctions

Posted by in category: neuroscience

Shared with Dropbox.

Jan 9, 2024

UMass Chan researchers identify molecular link between gut bacteria and excitatory brain signaling in C. elegans

Posted by in categories: biotech/medical, health, neuroscience

A new study published in Nature Cell Biology by Mark Alkema, PhD, professor of neurobiology, establishes an important molecular link between specific B12-producing bacteria in the gut of the roundworm C. elegans and the production of acetylcholine, a neurotransmitter important to memory and cognitive function.

There is growing recognition among scientists that diet and gut microbiota may play an important role in brain health. Changes in the composition of the microbiome have been linked to neurological disorders such as anxiety, depression, migraines and neurodegeneration. Yet, teasing out the cause and effect of individual bacteria or nutrients on brain function has been challenging.

“There are more bacteria in your intestine than you have cells in your body,” said Woo Kyu Kang, PhD, a postdoctoral fellow in the Alkema lab and first author of the current study. “The complexity of the brain, the hundreds of bacterial species that comprise the gut microbiome and the diversity of metabolites make it almost impossible to discern how bacteria impact brain function.”