Nav: Home

How bacteria in the gut influence neurodegenerative disorders

November 13, 2017

WASHINGTON, DC -- Humans have roughly as many bacterial cells in their bodies as human cells, and most of those bacteria live in the gut. New research released today reveals links between the gut microbiome -- the population of microorganisms living in the gastrointestinal tract -- and brain diseases such as Parkinson's and Alzheimer's, including potential new ways to track and treat these diseases. The studies were presented at Neuroscience 2017, the annual meeting of the Society for Neuroscience and the world's largest source of emerging news about brain science and health.

Almost 100 trillion microbes -- some beneficial and some harmful -- live in the human gastrointestinal tract at any time, helping to regulate immune function and inflammation, two factors hypothesized to play a role in neurodegenerative diseases like Parkinson's and Alzheimer's. As brain-focused cures for such diseases remain elusive, scientists are looking to the microbiome for new insight and novel strategies.

Today's new findings show that:
  • Metabolites derived from the microbiome block protein misfolding in test tubes and prevent neurodegeneration in a fly model of a disease related to Parkinson's, hinting that gut-derived metabolites may hold therapeutic promise (Lap Ho, abstract 573.23, see attached summary).
  • A rat model of Parkinson's disease displays increased levels of an inflammatory protein in the colon, identifying a possible new biomarker for the disease (Doris J. M. Doudet, abstract 133.13, see attached summary).
  • Nonhuman primates that received stomach injections of a protein associated with Parkinson's disease show signs of the disease in their brains, revealing that pathology can spread from the gut to the brain (Erwan Bezard, abstract 131.02, see attached summary).
  • A gene associated with risk for Alzheimer's disease influences the gut microbiome of mice, potentiating a novel treatment strategy (Ishita Parikh, abstract 476.02, see attached summary).
  • Probiotic treatment corrects memory problems in an Alzheimer's mouse model, suggesting that altering the microbiome may help delay the disease (Harpreet Kaur, abstract 126.23, see attached summary).
"The results presented today add to the growing body of evidence showing the influence of the gut on the brain and the crucial relationship between the two," said press conference moderator Tracy Bale, PhD, of the University of Maryland School of Medicine and Center for Brain Development and Maternal Mental Health. "Targeting the gut introduces a different and promising angle to tackle brain disorders across the lifespan."
-end-
This research was supported by national funding agencies such as the National Institutes of Health, as well as other public, private, and philanthropic organizations worldwide. Find out more about the microbiome and the brain on BrainFacts.org.

The Society for Neuroscience (SfN) is an organization of nearly 37,000 basic scientists and clinicians who study the brain and nervous system.

Society for Neuroscience

Related Brain Articles:

Study describes changes to structural brain networks after radiotherapy for brain tumors
Researchers compared the thickness of brain cortex in patients with brain tumors before and after radiation therapy was applied and found significant dose-dependent changes in the structural properties of cortical neural networks, at both the local and global level.
Blue Brain team discovers a multi-dimensional universe in brain networks
Using a sophisticated type of mathematics in a way that it has never been used before in neuroscience, a team from the Blue Brain Project has uncovered a universe of multi-dimensional geometrical structures and spaces within the networks of the brain.
New brain mapping tool produces higher resolution data during brain surgery
Researchers have developed a new device to map the brain during surgery and distinguish between healthy and diseased tissues.
Newborn baby brain scans will help scientists track brain development
Scientists have today published ground-breaking scans of newborn babies' brains which researchers from all over the world can download and use to study how the human brain develops.
New test may quickly identify mild traumatic brain injury with underlying brain damage
A new test using peripheral vision reaction time could lead to earlier diagnosis and more effective treatment of mild traumatic brain injury, often referred to as a concussion.
This is your brain on God: Spiritual experiences activate brain reward circuits
Religious and spiritual experiences activate the brain reward circuits in much the same way as love, sex, gambling, drugs and music, report researchers at the University of Utah School of Medicine.
Brain scientists at TU Dresden examine brain networks during short-term task learning
'Practice makes perfect' is a common saying. We all have experienced that the initially effortful implementation of novel tasks is becoming rapidly easier and more fluent after only a few repetitions.
Balancing time & space in the brain: New model holds promise for predicting brain dynamics
A team of scientists has extended the balanced network model to provide deep and testable predictions linking brain circuits to brain activity.
New view of brain development: Striking differences between adult and newborn mouse brain
Spikes in neuronal activity in young mice do not spur corresponding boosts in blood flow -- a discovery that stands in stark contrast to the adult mouse brain.
Map of teenage brain provides evidence of link between antisocial behavior and brain development
The brains of teenagers with serious antisocial behavior problems differ significantly in structure to those of their peers, providing the clearest evidence to date that their behavior stems from changes in brain development in early life, according to new research led by the University of Cambridge and the University of Southampton, in collaboration with the University of Rome Tor Vergata in Italy.

Related Brain Reading:

The Brain: The Story of You
by David Eagleman (Author)

Brain Food: The Surprising Science of Eating for Cognitive Power
by Lisa Mosconi PhD (Author)

Brain on Fire: My Month of Madness
by Susannah Cahalan (Author)

Switch On Your Brain: The Key to Peak Happiness, Thinking, and Health
by Dr. Caroline Leaf (Author)

The Brain's Way of Healing: Remarkable Discoveries and Recoveries from the Frontiers of Neuroplasticity
by Norman Doidge (Author)

Brain: The Complete Mind: How It Develops, How It Works, and How to Keep It Sharp
by Michael S. Sweeney (Author), Richard Restak (Foreword)

Brain Rules (Updated and Expanded): 12 Principles for Surviving and Thriving at Work, Home, and School
by John Medina (Author)

The Human Brain Coloring Book (Coloring Concepts Series)
by Marian C. Diamond (Author), Arnold B Scheibel (Author)

Brain Maker: The Power of Gut Microbes to Heal and Protect Your Brain?for Life
by David Perlmutter (Author), Kristin Loberg (Contributor)

The Brain That Changes Itself: Stories of Personal Triumph from the Frontiers of Brain Science
by Norman Doidge (Author)

Best Science Podcasts 2018

We have hand picked the best science podcasts for 2018. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Why We Hate
From bullying to hate crimes, cruelty is all around us. So what makes us hate? And is it learned or innate? This hour, TED speakers explore the causes and consequences of hate — and how we can fight it. Guests include reformed white nationalist Christian Picciolini, CNN commentator Sally Kohn, podcast host Dylan Marron, and writer Anand Giridharadas.
Now Playing: Science for the People

#482 Body Builders
This week we explore how science and technology can help us walk when we've lost our legs, see when we've gone blind, explore unfriendly environments, and maybe even make our bodies better, stronger, and faster than ever before. We speak to Adam Piore, author of the book "The Body Builders: Inside the Science of the Engineered Human", about the increasingly amazing ways bioengineering is being used to reverse engineer, rebuild, and augment human beings. And we speak with Ken Thomas, spacesuit engineer and author of the book "The Journey to Moonwalking: The People That Enabled Footprints on the Moon" about...