face_with_colon_three 2014
Teen girls born with a rare genetic disorder are functioning well years after successful organ implant surgeries.
Category: genetics – Page 66
Year 2013 face_with_colon_three
Scientists at Oregon Health & Science University and the Oregon National Primate Research Center (ONPRC) have successfully reprogrammed human skin cells to become embryonic stem cells capable of transforming into any other cell type in the body. It is believed that stem cell therapies hold the promise of replacing cells damaged through injury or illness. Diseases or conditions that might be treated through stem cell therapy include Parkinson’s disease, multiple sclerosis, cardiac disease and spinal cord injuries.
The research breakthrough, led by Shoukhrat Mitalipov, Ph.D., a senior scientist at ONPRC, follows previous success in transforming monkey skin cells into embryonic stem cells in 2007. This latest research will be published in the journal Cell online May 15 and in print June 6.
The technique used by Drs. Mitalipov, Paula Amato, M.D., and their colleagues in OHSU’s Division of Reproductive Endocrinology and Infertility, Department of Obstetrics & Gynecology, is a variation of a commonly used method called somatic cell nuclear transfer, or SCNT. It involves transplanting the nucleus of one cell, containing an individual’s DNA, into an egg cell that has had its genetic material removed. The unfertilized egg cell then develops and eventually produces stem cells.
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.
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.
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.
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.
Liu et al.
Engineered enzymes employed in neurons enable synthesis of electroactive polymers for behavior remodeling in living animals.
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.
Some of the AI-designed gene editors could be more versatile than those found in nature.
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.