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Bacteria help build your pancreas

Posted by Dr Sandy on in Diabetes | 698 Views | Leave a response

Click to listen to the audio…

How to protect your child from developing diabetes

baby beta cells being fed by bacteria

A pancreas chock full of beta cells is going to be less likely to succumb to diabetes. Genes, lifestyle and …………..BACTERIA shape pancreas development

Your pancreas  is tasked with regulating blood sugar levels, when it fails in this task – diabetes happens.

So what causes it to fail ?

In a soundbite………………………a shortage of beta cells.

A low beta cell count

Now, there are a multitude of reasons, why beta cell numbers  tank.

Overwork.  Deliberate destruction.  Poisoning.  Old age.

It’s complicated…….. and the destruction is relative.

That said, the more beta cells you have to begin with, the more wiggle room you have, when it comes to losing them.

A pancreas chock full of beta cells  is going to be more resilient.

So how do you get more ?

The birth of a beta cell

The story actually begins in utero.

As baby develops, cells destined to be beta cells, form from special progenitors, they take up position  in baby’s pancreas and wait, to come on line.

As long as junior is hooked up to the feeding line,  they’re not actually needed.

Once the line is cut, they get busy……………

They start to divide furiously.

Hitting a high point, in terms of numbers, at the age of two.   And then……………….. it’s a slow and steady decline, with a lot of fine tuning and maturing.

By the age of 5 years, the final beta cell mass is pretty much established.

Metabolic demand shifts the balance

The beta cell number is not  absolutely FIXED, there is some wiggle room.   Should the metabolic situation DEMAND  a change, the beta cells can step up to the plate and increase.

High DEMAND happens in obesity and pregnancy.

In people who develop diabetes,  the beta cell numbers don’t expand to meet that HIGH DEMAND.  Eish !

So what sets that base line ?

Logic says genes and diet, but could there be more to the story ?

A group of researchers based at the University of Oregon have shown, gut bacteria are involved.

Using zebrafish, the team showed  when  baby fish grew up “germ free” (gnotobiotic zebrafish), they ended up with significantly less beta cells  than normal.

Gut bacteria promoted beta cell  expansion.

And more beta cells,  means more insulin and better sugar control.

This can be seen here….

insulin production by islets from germ free zebrafish

Cross section through zebrafish islets showing insulin production. Left hand panel, shows insulin production in normal zebrafish, right hand panel, shows insulin production in germ free zebrafish. Copyright Hill et al

The photo is a slice of islet from a normal baby zebrafish, 6 days after fertilization, compared to a slice of islet from a baby zebrafish with no gut bacteria.  The translucent green reflects the amount of insulin.

Baby zebrafish, with healthy doses of insulin, do better at controlling their blood sugar.

BefA is doing it

Intrigued, the team set about finding out, just how the gut bacteria living in the zebrafish, made zebrafish beta cells grow.  It turned out, a few of the gut residents, secreted a protein,  that prompted beta cells to divide.

The team named  this protein beta cell expansion factor A (BefA).

And concluded gut bacteria play a role in the development of the digestive organs of zebrafish.

Do bacteria grow human pancreases ?

Maybe.

Human gut bacteria secrete befA too

And the befA they produce, makes beta cells in zebrafish grow – suggesting human gut bacteria could be involved.

Unfortunately, “we’re” not able to grow human beta islets in a dish, so there is no way to know for sure, whether human gut bacteria, helped build your pancreas.

But, odds are they did.

Early disruptions to gut flora

Human babies that are short changed in terms of their gut flora, are at risk of  developing diabetes, both type 1 and type 2.

This research suggests, part of the risk, might be a lower beta cell reserve.

If you have been microbiologically disadvantaged, be vigilant.  The lack of genetic diversity early on, could have seen you get exposed to fewer BetA genes, leaving you with less of a buffer against lifestyle risks.

NOTE : If you’re a wanna-be or about-2-be Mom, do what you can to cultivate a diverse microflora in your little one, so you help to build a better pancreas and thus protect your little one from the diabetes scourge.


A conserved bacterial protein induces pancreatic beta cell expansion during zebrafish development.  eLife (2016)  5:e20145. Jennifer Hampton Hill, Eric A Franzosa, Curtis Huttenhower, Karen Guillemin

Further reading

insulin in crowd

Gut bacteria influence whether insulin is part of the in crowd

In insulin resistant peeps, the resident bacteria have ganged up and decided, insulin is NOT COOL. Since body cells, don’t want to break social protocol…………..

antibiotics are not sweets

Giving antibiotics like sweets, not sweets per se, behind childhood obesity

What if childhood obesity has nothing to do with food ? What if it begins in the doctor’s rooms ? Specifically with antibiotic prescriptions in the under twos F

the bacterial welcoming committee following a c-section

Babies who arrive via c-section arrive programmed to be fat

Babies who arrive by c-section, avoid the PAIN but GAIN a lot more bacteria which belong to the Firmicutes family. And these are the “fat” bacteria.

 

Want to discover more ways to create BETTER BODY CHEMISTRY ?

Posted in Diabetes | Tagged bacteria, BetA, beta cells, development, diabetes, insulin, microflora, pancreas, zebrafish

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