Categories: Front PageHealth

Akkermansia muciniphila: Weight loss gut bacterium discovered

Researchers have found that a certain type of bacteria that live in the gut have been used to reverse obesity and Type-2 diabetes in animal studies.

Research, published in Proceedings of the National Academy of Sciences, showed that a broth containing a single species of bacteria could dramatically alter the health of obese mice.

It is thought to change the gut lining and the way food is absorbed.

Similar tests now need to take place in people to see if the same bacteria can be used to shed the pounds.

The human body is teeming with bacteria – the tiny organisms outnumber human cells in the body 10 to one.

And there is growing evidence that this collection of bacteria or “microbiome” affects health.

Studies have shown differences between the types and numbers of bacteria in the guts of lean and obese people.

Researchers have found that a certain type of bacteria that live in the gut have been used to reverse obesity and Type-2 diabetes in animal studies

Meanwhile gastric bypass operations have been shown to change the balance of bacteria in the gut.

Researchers at the Catholic University of Louvain, in Belgium, worked with a single species of bacteria Akkermansia muciniphila. It normally makes up 3-5% of gut bacteria, but its levels fall in obesity.

Mice on a high fat diet – which led them to put on two to three times more fat than normal, lean, mice – were fed the bacteria.

The mice remained bigger than their lean cousins, but had lost around half of their extra weight despite no other changes to their diet.

They also had lower levels of insulin resistance, a key symptom of Type-2 diabetes.

Prof. Patrice Cani, from the Catholic University of Louvain, said: “Of course it is an improvement, we did not completely reverse the obesity, but it is a very strong decrease in the fat mass.

“It is the first demonstration that there is a direct link between one specific species and improving metabolism.”

Adding the bacteria increased the thickness of the gut’s mucus barrier, which stops some material passing from the gut to the blood. It also changed the chemical signals coming from the digestive system – which led to changes in the way fat was processed elsewhere in the body.

Similar results were achieved by adding a type of fiber to diets which led to an increase in the levels of Akkermansia muciniphila.

Prof. Patrice Cani said it was “surprising” that just one species, out of the thousands in the gut, could have such an effect.

He said this was a “first step” towards “eventually using these bacteria as prevention or treatment of obesity and Type-2 diabetes” and that some form of bacteria-based therapy would be used “in the near future”.

Kathryn R. Bown

Kathryn - Our health specialist likes to share with the readers the latest news from the field. Nobody understands better than her the relation between healthy mind and healthy body.

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