gut-brain connection tagged posts

A study led by Nagoya University Graduate School of Medicine in Japan has revealed a link between gut microbiota and Parkinson’s disease (PD). The researchers found a reduction in the gut bacteria of genes responsible for synthesizing the essential B vitamins B2 and B7. They also identified a relationship between the lack of these genes and low levels of agents that help maintain the integrity of the intestinal barrier. This barrier prevents toxins from entering the bloodstream, which causes the inflammation seen in PD. Their findings, published in npj Parkinson’s Disease, suggest that treatment with B vitamins to address these deficiencies can be used to treat PD.

PD is characterized by a variety of physical symptoms that hinder daily activities and mobility, such as shaking, slow...

AHR limits microglial pro-inflammatory transcriptional responses during EAE.

A study published this week in Nature sheds new light on the connection between the gut and the brain, untangling the complex interplay that allows the byproducts of microorganisms living in the gut to influence the progression of neurodegenerative diseases. Investigators from Brigham and Women’s Hospital (BWH) have been using both animal models and human cells from patients to tease out the key players involved in the gut-brain connection as well as in the crosstalk between immune cells and brain cells. Their new publication defines a pathway that may help guide therapies for multiple sclerosis and other neurologic diseases.

The new research focuses on the influence of gut microbes on two types of cells that play...

An image of tissue from a human colon uses fluorescent staining to show the presence of the protein alpha-synuclein (red) inside gut endocrine cells (green).
Credit: 2017, JCI Insight

Protein linked to Parkinson’s could spread from gut to nervous system. Recent research on Parkinson’s disease has focused on the gut-brain connection, examining patients’ gut bacteria, and even how severing the vagus nerve connecting the stomach and brain might protect some people from the debilitating disease. Duke University researchers have identified a potential new mechanism in both mice and human endocrine cells that populate the small intestines...