Gut microbiome tagged posts

Our gut microbiome — the ever-changing “rainforest” of bacteria living in our intestines — is primarily affected by our lifestyle, including what we eat or the medications we take, most studies show. But a University of Notre Dame study has found a much greater genetic component at play than was once known.

In the study, published recently in Science, researchers discovered that most bacteria in the gut microbiome are heritable after looking at more than 16,000 gut microbiome profiles collected over 14 years from a long-studied population of baboons in Kenya’s Amboseli National Park. However, this heritability changes over time, across seasons and with age. The team also found that several of the microbiome traits heritable in baboons are also heritable in humans.

“The environme...

Data from over 9,000 people reveal a distinct gut microbiome signature that is associated with healthy aging and survival in the latest decades of life. The gut microbiome is an integral component of the body, but its importance in the human aging process is unclear. ISB researchers and their collaborators have identified distinct signatures in the gut microbiome that are associated with either healthy or unhealthy aging trajectories, which in turn predict survival in a population of older individuals. The work is set to be published in the journal Nature Metabolism.

The research team analyzed gut microbiome, phenotypic and clinical data from over 9,000 people — between the ages of 18 and 101 years old — across three independent cohorts...

Researchers at Oregon State University have found that a few organisms in the gut microbiome play a key role in type 2 diabetes, opening the door to possible probiotic treatments for a serious metabolic disease affecting roughly one in 10 Americans.

“Type 2 diabetes is in fact a global pandemic and the number of diagnoses is expected to keep rising over the next decade,” said study co-leader Andrey Morgun, associate professor of pharmaceutical sciences in the OSU College of Pharmacy. “The so-called ‘western diet’ — high in saturated fats and refined sugars — is one of the primary factors. But gut bacteria have an important role to play in modulating the effects of diet.”

Formerly known as adult-onset diabetes, type 2 diabet...

MRI of a patient with (cerebral cavernous malformation) CCM disease. Credit: Issam Awad, University of Chicago

Bacteria in the gut microbiome drive the formation of cerebral cavernous malformations (CCMs), clusters of dilated, thin-walled blood vessels in the brain that can cause stroke and seizures, according to new research published this week in Nature by researchers from the Perelman School of Medicine at the University of Pennsylvania.

Altering the microbiome in CCM patients may be an effective therapy for this cerebrovascular disease. CCM disease, which occurs in about 1 in 100 to 200 people, can present in 2 forms. One is sporadic, accounting for 80% of cases, and is most frequent in older individuals. The remaining 20% are familial, inherited cases...