Athens, Ga. – Human eyes naturally contain yellow pigment in the macula, a spot near the center of the retina responsible for high-resolution vision. Those with more yellow in their macula may have an advantage when it comes to filtering out atmospheric particles that obscure one's vision, commonly known as haze. According to a new University of Georgia study, people with increased yellow in their macula could absorb more light and maintain better vision in haze than others.
Brain
WASHINGTON, Sept. 4, 2014 — Football season is here, and along with thousands of lost hours of productivity from fantasy teams, there's a renewed discussion on the impact of head injuries on players. This week's Speaking of Chemistry focuses on a brain disorder called chronic traumatic encephalopathy (CTE), whose symptoms include memory loss, depression and aggressive or violent behavior. Current detection methods can only identify CTE after a patient has died, leaving many NFL players with a diagnosis that came too late.
NEW YORK, NY (September 3, 2014)—Like conventional cigarettes, electronic cigarettes (ore-cigarettes) may function as a "gateway drug"—a drug that lowers the threshold for addiction toother substances, such as marijuana and cocaine—according to the 120th Shattuck lecture, presented to the Massachusetts Medical Society by Columbia researchers Denise and EricKandel and published today in the online edition of the New England Journal of Medicine.
MINNEAPOLIS – Sleep difficulties may be linked to faster rates of decline in brain volume, according to a study published in the September 3, 2014, online issue of Neurology®, the medical journal of the American Academy of Neurology.
Sleep has been proposed to be "the brain's housekeeper", serving to repair and restore the brain.
The study included 147 adults 20 and 84 years old. Researchers examined the link between sleep difficulties, such as having trouble falling asleep or staying asleep at night, and brain volume.
INDIANAPOLIS -- Few people would guess that some of the most detrimental damage from a traumatic brain injury is to the lungs, but transplant specialists are keenly aware of this phenomenon. Indiana University research published Sept. 3 in Science Translational Medicine sheds light on the potentially lethal process.
The current way of diagnosing type-2 diabetes using blood glucose levels needs to be revised, research by scientists from The University of Manchester and King's College London suggests.
The findings, published in the journal PLOS ONE today (3 September), show the current method of diagnosis - using blood glucose levels - means patients are diagnosed too late so that their blood vessels may already be damaged.
Putnam Valley, NY. (Sept. 3, 2014) – A team of researchers from Korea and Canada have found that transplantation of B10 cells (a stable immortalized human bone marrow derived –mesenchymal stem cell line; B10 hMSC) directly into the bladder wall of mice modeled with spinal cord injury (SCI) helped inhibit the development of bladder fibrosis and improved bladder function by promoting the growth of smooth muscle cells in the bladder.
A gene crucial for brain and heart development may also be associated with sudden unexplained death in epilepsy (SUDEP), the most common cause of early mortality in epilepsy patients.
Scientists at The University of Texas MD Anderson Cancer Center have created a new animal model for SUDEP and have shown that mice who have a partial deficiency of the gene SENP2 (Sentrin/SUMO-specific protease 2) are more likely to develop spontaneous seizures and sudden death. The finding occurred when observing mice originally bred for studying a link between SENP2 deficiency and cancer.
It's in the brain where we perceive the unpleasant sensations of pain, and researchers have long been examining how calcium channels in the brain and peripheral nervous system contribute to the development of chronic pain conditions.
Since the introduction of the combination anti-retroviral therapy (cART) in the mid-90s, the life expectancy of HIV patients has significantly improved. As a result, long-term complications are becoming more relevant: almost every second HIV patient is affected by neurocognitive disorders, which can lead to dementia. It has not as yet been fully understood how these disorders occur.
PROVIDENCE, R.I. [Brown University] — Because Brown University biomedical engineering graduate student Molly Boutin needed to study how neural tissues grow from stem cells, she wanted to grow not just a cell culture, but a sphere-shaped one. Cells grow and interact more naturally in 3-D cultures than when they're confined to thin slides or dishes.
Scientists from Oxford University, the University of Vienna, and the Max Planck Institute at Seewiesen have shown that a spontaneous innovation by a Goffin's cockatoo can spread to other conspecifics by social learning.
Puerarin is a natural isoflavone isolated from plants of the genus Pueraria and functions as a protector against cerebral ischemia. Can puerarin be involved in the repair of peripheral nerve injuries? Minfei Wu and co-workers from the Second Hospital of Jilin University in China verified that puerarin exerts an ongoing role to activate growth-associated protein 43 in the corresponding segment of the spinal cord after sciatic nerve injury, thus contributing to neural regeneration after sciatic nerve injuries.
Cancerous brain tumors are notorious for growing back despite surgical attempts to remove them — and for leading to a dire prognosis for patients. But scientists are developing a new way to try to root out malignant cells during surgery so fewer or none get left behind to form new tumors. The method, reported in the journal ACS Nano, could someday vastly improve the outlook for patients.
EAST LANSING, Mich. --- Were Albert Einstein and Leonardo da Vinci born brilliant or did they acquire their intelligence through effort?
No one knows for sure, but telling people the latter – that hard work trumps genes – causes instant changes in the brain and may make them more willing to strive for success, indicates a new study from Michigan State University.