Gut bacteria affect brain health, mouse study shows (Links to an external site)

Gut bacteria can influence brain health, according to a study of mice genetically predisposed to develop Alzheimer’s-like brain damage. The study, by researchers at Washington University School of Medicine in St. Louis, indicates that gut bacteria produce compounds that influence the behavior of immune cells, including ones in the brain that can cause neurodegeneration. The findings suggest a new approach to treating Alzheimer’s and other neurodegenerative diseases.

A growing pile of evidence indicates that the tens of trillions of microbes that normally live in our intestines — the so-called gut microbiome — have far-reaching effects on how our bodies function. Members of this microbial community produce vitamins, help us digest food, prevent the overgrowth of harmful bacteria and regulate the immune system, […]

Sustainability key focus in Neuroscience Research Building construction (Links to an external site)

This rendering shows a large rooftop terrace on the third floor of the Neuroscience Research Building that can be used as a gathering place for employees and as an event space. Trees, such as elms, junipers and magnolias, will provide shade to help reduce heat during hotter months.

The Neuroscience Research Building under construction on the Washington University Medical Campus promises great discoveries in an environmentally friendly building that meets sustainability goals. The completed structure will contain energy-efficient, low-energy research freezers in laboratories; electric charging stations in the parking garage; and numerous other sustainability-focused elements.

Exercise, mindfulness don’t appear to boost cognitive function in older adults (Links to an external site)

Older adults work with exercise trainers as part of a study to see whether exercise, mindfulness training, or both might improve cognitive performance in seniors. A new study did not show such improvements, though the researchers are continuing to explore whether there may be some cognitive effects over a longer time period.

A large study that focused on whether exercise and mindfulness training could boost cognitive function in older adults found no such improvement following either intervention. Researchers at Washington University School of Medicine in St. Louis and the University of California, San Diego, studied the cognitive effects of exercise, mindfulness training or both for up to […]

Alzheimer’s progression in Down syndrome appears similar to other genetic, early onset forms of the disease (Links to an external site)

Amyloid plaques — protein clumps that are one of the hallmarks of Alzheimer’s disease—occur at roughly the same level in the brains of people with Down syndrome who have Alzheimer’s as they do in people with forms of hereditary, early-onset Alzheimer’s, according to research funded by the National Institutes of Health. Based on the largest […]

That Blockbuster Alzheimer’s Drug? It’s Not a Cure (Links to an external site)

Signage is displayed on the exterior of Biogen Inc. headquarters in Cambridge, Massachusetts, U.S., on Friday, Aug. 5, 2016. Japan’s Eisai Co. said that an Alzheimer’s drug it is developing with Massachusetts-based Biogen Inc. will enter late-stage trials after getting the green light from the U.S. Food and Drug Administration. (Photographer: Bloomberg/Bloomberg)

Biogen Inc. and Eisai Co. caused a stir in September when they announced positive results in a late-stage trial for a closely watched Alzheimer’s drug, lecanemab. Doctors tempered their excitement, though, until they could scrutinize the full peer-reviewed data. That data arrived Tuesday night. And while it is stoking enthusiasm that physicians might soon be able […]

What Health Care Systems Need to Do to Prepare for the Pipeline of New Alzheimer’s Drugs (Links to an external site)

Doctor holds bottle

Several agents from a packed pipeline of anti-amyloid therapies for the treatment of Alzheimer’s disease may come to market within the next year, prompting experts in the field to ask: Are the systems of care within neurology and health care in general ready for the changes to dementia care delivery that will come with more […]

Diagnostic marker found for deadly brain disease marked by dementia, movement problems (Links to an external site)

Kanta Horie, PhD, (left) and Chihiro Sato, PhD, discuss data in the Tracy Family SILQ Center at Washington University School of Medicine in St. Louis. Sato and Horie led a team that discovered a biomarker for a rare, deadly brain disease known as corticobasal degeneration (CBD). The biomarker could accelerate efforts to develop treatments for CBD.

Zooming in on a single disease and studying it intensely is often the most productive route to finding treatments. But there’s no easy way to distinguish among people living with any of the primary tauopathies — a group of rare brain diseases marked by rapidly worsening problems with thinking and movement — because the symptoms […]

Study yields clues to why Alzheimer’s disease damages certain parts of the brain (Links to an external site)

Red and orange areas on these heat maps of human brains show where the gene APOE is most active (top two brain images) and where tangles of the protein tau are most concentrated (bottom two brain images). APOE is the biggest genetic risk factor for Alzheimer’s, and tau tangles drive brain damage in the disease. The similarities in the two sets of maps suggested to researchers at Washington University School of Medicine in St. Louis that APOE plays a role in making certain brain areas particularly vulnerable to Alzheimer’s damage.

Memory loss is often the first sign of Alzheimer’s disease, followed by confusion and difficulty thinking. These symptoms reflect the typical pattern of worsening damage to brain tissues. Toxic clusters of proteins first concentrate in the temporal lobes of the brain — the memory area — before spreading to parts of the brain important for […]