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Archive for the ‘genetics’ category: Page 21

May 7, 2024

Researchers identify genetic factors that help some reach 100 years with sharp minds

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

Researchers have discovered that individuals who live to be 100 years old and remain cognitively healthy possess genetic variations that may protect against Alzheimer’s disease. These “protective alleles” are significantly more prevalent among centenarians compared to Alzheimer’s patients and even middle-aged individuals without the disease. This finding could pave the way for new approaches in preventing and treating Alzheimer’s, particularly by focusing on enhancing these protective genetic mechanisms.

The new findings have been published in the journal Alzheimer’s & Dementia.

Alzheimer’s disease is a progressive neurological disorder that predominantly affects older adults, leading to a decline in cognitive functions such as memory and reasoning. Over time, this can result in a complete loss of independence and eventually death. The risk of developing Alzheimer’s increases significantly with age, and while it is not an inevitable part of aging, it is one of the most common causes of dementia among seniors.

May 6, 2024

Complex activity and short-term plasticity of human cerebral organoids reciprocally connected with axons

Posted by in categories: genetics, neuroscience

Connecting cerebral organoids with an axon bundle models inter-regional projections and enhances neural activity. Optogenetic stimulation induces short-term plasticity, offering insights into macroscopic circuit development and functionality.

May 6, 2024

One in 50 people ‘almost guaranteed to develop new type of Alzheimer’s disease’

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

ONE in 50 people could be at risk of a new type of genetic dementia, according to a study.

Researchers found people carrying two copies of the APOE4 gene mutation are “almost guaranteed” to develop Alzheimer’s in old age.

May 6, 2024

Scientists restore brain cells impaired by a rare genetic disorder

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

Scientists have found a way to restore brain cells impaired by a rare and life-threatening genetic disorder called Timothy syndrome.

A type of drug known as an antisense oligonucleotide allowed clusters of human neurons to develop normally even though they carried the mutation responsible for…


A therapy that restores brain cells impaired by a rare genetic disorder may offer a strategy for treating conditions like autism, epilepsy, and schizophrenia.

Continue reading “Scientists restore brain cells impaired by a rare genetic disorder” »

May 5, 2024

Genetically targeted chemical assembly of functional materials in living cells, tissues, and animals

Posted by in categories: chemistry, genetics, neuroscience

Liu et al.


Engineered enzymes employed in neurons enable synthesis of electroactive polymers for behavior remodeling in living animals.

May 4, 2024

Metacognitive abilities may be more influenced by environment than genetics

Posted by in categories: genetics, neuroscience

A study shows that metacognition and mentalizing, complex cognitive abilities crucial for social interaction, are more influenced by environmental factors than genetics, challenging traditional views on the heritability of intelligence.

May 3, 2024

‘ChatGPT for CRISPR’ creates new gene-editing tools

Posted by in categories: biotech/medical, genetics, robotics/AI

Some of the AI-designed gene editors could be more versatile than those found in nature.

May 3, 2024

Demystifying Vision: Optical Illusions Illuminate Neural Pathways

Posted by in categories: genetics, neuroscience

For the first time, research shows that a certain kind of visual illusion, neon color spreading, works on mice. The study is also the first to combine the use of two investigative techniques called electrophysiology and optogenetics to study this illusion. Results from experiments on mice settle a long-standing debate in neuroscience about which levels of neurons within the brain are responsible for the perception of brightness.

Everyday Optical Illusions

We’re all familiar with optical illusions; some are novelties, while some are all around us. Even as you look at the screen in front you, you are being fooled into thinking that you’re seeing the color white. What you’re really seeing is lots of red, green, and blue elements packed so tightly together it gives the impression of being white. Another example is a fast rotating wheel or propeller, which can briefly look like it’s reversing direction while it’s accelerating to full speed.

May 1, 2024

Marriage of synthetic biology and 3D printing produces programmable living materials

Posted by in categories: 3D printing, bioengineering, biological, genetics, sustainability

Scientists are harnessing cells to make new types of materials that can grow, repair themselves and even respond to their environment. These solid “engineered living materials” are made by embedding cells in an inanimate matrix that’s formed in a desired shape. Now, researchers report in ACS Central Science that they have 3D printed a bioink containing plant cells that were then genetically modified, producing programmable materials. Applications could someday include biomanufacturing and sustainable construction.

Apr 29, 2024

Researcher wants to use epigenetics to advance cancer treatment

Posted by in categories: biotech/medical, genetics

Angela Ting, Ph.D., was intrigued by the field of epigenetics as soon as she was introduced to it in college. Now, she runs a research lab that explores how epigenetics plays a role in the development of cancer. She wants to use that knowledge to better treat patients with certain types of cancer.

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