Neuroscience News from the UR Community
Monday, December 2, 2013
Physicians at the University of Rochester Medical Center (URMC) Strong Epilepsy Center were involved in the recent approval of a new treatment for epilepsy. The implantable medical device - called the Responsive Neurostimulator System (RNS) - monitors brain activity and can detect and counteract seizures.
URMC was one of only 28 sites in the country to conduct clinical trials of RNS, which was developed by the California-based company Neuropace. The research showed that the device decreases the number of monthly seizures by nearly 38 percent. URMC neurologists Michel Berg, M.D. and James Fessler, M.D., and neurosurgeon Web Pilcher, M.D., Ph.D. were involved in the study.
Read More: URMC Plays Role in New Epilepsy Technology
This is the first FDA-approved brain implant for epilepsy that responds to the brain’s activity, said Berg, an associate professor of Neurology.
For patients who are unable to control their seizures with medications or are not eligible for resective surgery, this device could provide an important treatment option.
Thursday, October 17, 2013
The US team believe the
waste removal system is one of the fundamental reasons for sleep. Their study, in the journal Science, showed brain cells shrink during sleep to open up the gaps between neurons and allow fluid to wash the brain clean. They also suggest that failing to clear away some toxic proteins may play a role in brain disorders.
One big question for sleep researchers is why do animals sleep at all when it leaves them vulnerable to predators? It has been shown to have a big role in the fixing of memories in the brain and learning, but a team at the University of Rochester Medical Centre believe that
housework may be one of the primary reasons for sleep.
Read More: Sleep 'Cleans' the Brain of Toxins
The brain only has limited energy at its disposal and it appears that it must choose between two different functional states - awake and aware or asleep and cleaning up, said researcher Dr Maiken Nedergaard.
You can think of it like having a house party. You can either entertain the guests or clean up the house, but you can't really do both at the same time.
Bringing the Science of Adolescent Brain Development to the Rochester Community
Sunday, June 30, 2013
Dr. Dana Helmreich and colleagues in the Department of Psychiatry have won a Center for Community Health Mini-Grant to develop a curriculum on adolescent brain development and function for the larger Rochester community. The curriculum will be developed collaboratively with parents, teachers, and other community members so that is relevant to a variety of topics in adolescent development.
Thursday, June 27, 2013
In a perspective piece appearing today in the journal Science, researchers at University of
Rochester Medical Center point to a newly discovered system by which the brain removes waste as a
potentially powerful new tool to treat neurological disorders like Alzheimer's disease.
In fact, scientists believe that some of these conditions may arise when the system is not doing
its job properly.
Essentially all neurodegenerative diseases are associated with the accumulation of cellular
waste products, said Maiken
Nedergaard, M.D., D.M.Sc., co-director of the URMC Center
for Translational Neuromedicine and author of the article.
Understanding and ultimately discovering how
to modulate the brain’s system for removing toxic waste could point to new ways to treat these diseases.
The body defends the brain like a fortress and rings it with a complex system of gateways that control
which molecules can enter and exit. While this Read More: Brain's 'Garbage Truck' May Hold Key to Treating Alzheimer's and Other Disorders
blood-brain barrier was first described in the late 1800s,
scientists are only now just beginning to understand the dynamics of how these mechanisms function. In fact,
the complex network of waste removal, which researchers have dubbed the glymphatic system, was only
first disclosed by URMC scientists last
August in the journal Science Translational Medicine.
Monday, June 3, 2013
A multi-institutional team of researchers have pinpointed the genetic traits of the cells
that give rise to gliomas – the most common form of malignant brain cancer. The findings, which appear in the journal Cell Reports, provide scientists with rich new potential set of targets to treat the disease.
Read More: Researchers Identify Genetic Signature of Deadly Brain Cancer
This study identifies a core set of genes and pathways that are dysregulated during both the early and late stages of tumor progression,” said University of Rochester Medical Center neurologist Steven Goldman, M.D., Ph.D., the senior author of the study and co-director of the Center for Translational Neuromedicine. “By virtue of their marked difference from normal cells, these genes appear to comprise a promising set of targets for therapeutic intervention.
Friday, May 10, 2013
Children with autism see simple movements twice as fast as other children their age, a new study finds. Researchers at Vanderbilt University and the University of Rochester were looking to test a common theory about autism which holds that overwhelming sensory stimulation inhibits other brain functions. The researchers figured they could check that by studying how kids with autism process moving images.
Read More: Kids With Autism Quick To Detect Motion
One can think of autism as a brain impairment, but another way to view autism is as a condition where the balance between different brain processes is impaired, says Duje Tadin, a co-author of the study out this week in the Journal of Neuroscience.
That imbalance could lead to functional impairments, and it often does, but it can also result in enhancements.
Monday, May 6, 2013
Researchers in upstate New York have developed a wearable sensor system that will help toilet train autistic children. The device, created at the University of Rochester, involves a moisture pager that can connect to a smartphone app and alert caregivers to accidents.
Read More: Upstate Researchers Tackle Toilet Training for Autistic Children
It seems like something that you would think already exists, and it doesn't, says Stephen McAleavey, a biomedical engineering professor, and part of the team that developed the technology.
So the goal with this was to develop a wireless device that could be used to monitor children - for when they're having an accident - and to try to make it as easy to use for the parents or the caregivers as possible.
Scientists Find Way to Image Brain Waste Removal Process Which May Lead to Alzheimer's Diagnostic
Friday, February 22, 2013
A novel way to image the entire brain’s glymphatic pathway, a dynamic process that clears waste and solutes from the brain that otherwise might build-up and contribute to the development of Alzheimer’s disease, may provide the basis for a new strategy to evaluate disease susceptibility, according to a research paper published online in the Journal of Clinical Investigation. Through contrast enhanced magnetic resonance imaging (MRI) and other tools, a Stony Brook University-led research team successfully mapped this brain-wide pathway and identified key anatomical clearance routes of brain waste.
In their article titled “Brain-wide pathway for waste clearance captured by contrast enhanced MRI,” Principal Investigator Helene Benveniste, MD, PhD, a Professor in the Departments of Anesthesiology and Radiology at Stony Brook University School of Medicine, and colleagues built upon a previous finding by Jeffrey Iliff, PhD, and Maiken Nedergaard, MD, PhD, from University of Rochester that initially discovered and defined the glymphatic pathway, where cerebral spinal fluid (CSF) filters through the brain and exchanges with interstitial fluid (ISF) to clear waste, similar to the way lymphatic vessels clear waste from other organs of the body. Despite the discovery of the glymphatic pathway, researchers could not visualize the brain wide flow of this pathway with previous imaging techniques.
Wednesday, February 20, 2013
The brain and spinal cord are surrounded by cerebrospinal fluid, which provides a mechanically stable environment for these delicate structures against the forces of gravity and sudden acceleration and deceleration. Neurons and glia comprising the parenchyma of the brain are enveloped in their microenvironment by interstitial fluid. Interstitial fluid has long been considered to be unaffected by the production and flow of cerebrospinal fluid outside the brain parenchyma. However, two recent papers by Iliff et al. demonstrate that cerebrospinal fluid enters the deep substance of the brain, mixes with the interstitial fluid surrounding neurons and glia, and plays an important role in the exchange and clearance of molecules in the interstitial space of the central nervous system.Read More: Bathing the Brain
Thursday, January 10, 2013
A new study out today in the journal Science turns two decades of understanding about how brain cells communicate on its head. The study demonstrates that the tripartite synapse – a model long accepted by the scientific community and one in which multiple cells collaborate to move signals in the central nervous system – does not exist in the adult brain.
Read More: Study: Model for Brain Signaling Flawed
Our findings demonstrate that the tripartite synaptic model is incorrect, said Maiken Nedergaard, M.D., D.M.Sc., lead author of the study and co-director of the University of Rochester Medical Center (URMC) Center for Translational Neuromedicine.
This concept does not represent the process for transmitting signals between neurons in the brain beyond the developmental stage.
A Trip to Mars Could Increase Chances of Alzheimer's for Astronauts
Thursday, January 3, 2013
As if space travel was not already filled with enough dangers, a new study out today in the journal PLOS ONE shows that cosmic radiation – which would bombard astronauts on deep space missions to places like Mars – could accelerate the onset of Alzheimer's disease.
Galactic cosmic radiation poses a significant threat to future astronauts, said M. Kerry O'Banion, M.D., Ph.D., a professor in the University of Rochester Medical Center (URMC) Department of Neurobiology & Anatomy and the senior author of the study.
The possibility that radiation exposure in space may give rise to health problems such as cancer has long been recognized. However, this study shows for the first time that exposure to radiation levels equivalent to a mission to Mars could produce cognitive problems and speed up changes in the brain that are associated with Alzheimer's disease.