Bacteria & Nitrogen

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Aegir

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Hello fellas i am new to the forums here , very nice to meet you all.

Dr Deco maybe you will be interested in this article:

Flatulence, cure for the bends

(Diving experiments were conducted on pigs)

A bacteria that causes flatulence could be the answer to the bends - the debilitating and sometimes fatal condition which affects deep sea divers.

Researchers at the Naval Medical Center in Maryland, USA, say that experiments on pigs have shown that the bends or decompression sickness can be almost halved by a methane-producing bacteria found in the gut.

They believe that in the future the bacteria, Methanobrevibacter smithii, could be added to food supplements and given to deep sea divers to prevent the bends.

Nitrogen bubbles

Decompression sickness is caused by the production of nitrogen bubbles in the blood.

This is related to the depth and time of a dive and to the rate at which the diver ascends from depth.

If divers come up too fast, they can suffer a range of symptoms from limb paralysis, headaches, blurred vision and tingling skin.

In severe cases, the bends can be fatal.

Professional deep sea divers are most at risk because they can descend to depths of up to 600 metres, for example, to repair oil rigs.

At such depths, the air is so dense that divers require a mixture of oxygen and helium or hydrogen.

According to the New Scientist, Methanobrevibacter smithii metabolises hydrogen to form methane.

Pig divers

The US researchers tested their idea that removing the hydrogen from the divers' blood would reduce their risk of getting the bends.

They injected the bacteria into the gut of several pigs and shut them in a decompression chamber.

The pigs were then subjected to the simulated effects of ascending from a three-hour dive at around 240 metres below the surface of the sea.

Those not given the bacteria were nearly twice as likely to show signs of decompression sickness.

But the downside was that the pigs with the bacteria suffered more flatulence, although only briefly.

The scientists say the supplements are harmless.

"These are microbes that you have in your intestine right now," said Susan Kayar, one of the researchers.

Lawrence Martin, a specialist in diving medicine from Mount Sinai Medical Centre in Cleveland, Ohio, said the approach was "exciting and exotic".

http://news.bbc.co.uk/hi/english/health/newsid_330000/330807.stm
 
Thanks for the posting. I have seen this before but the readers of this forum may find it of interest. I am always interested in seeing good news stories such as this.

The gas removed is hydrogen so the bacterial treatment would not be particularly effective for recreational divers who employ nitrogen (or tech divers who often use helium).
 
Aegir,
Welcome to the boards, it's nice to have you onboard. Tell us abit about yourself, like where you live, how long you've been diving, what type of diving you prefer etc.

That's a very interesting thread you've started. I'd like to see more info on that type of theory. It makes you wonder about all that is to come by the time our grandchildren descend beneath the waves for the first time. If that is there is anything left alive to see... but that is another issue all together.

Diving, it's a different type of Pressure.
 
Dr Deco,

How would such bacterias be put to use in a practicle manner? I sure hope it wouldn't be by adding it to our breathing air!

(Click this link for comic relief only)

I can't help but think that companies would have a real hard time trying to sell this product ...

ANTI-BEANO ... The divers choice ...

hmm, nope, just doesn't seem to work for me ...

=-)

 
My understanding is that this research has been discontinued, primarily because it would be such a hard sell for the divers involved (those saturation chambers are awfully cozy). Bottom line is if the divers won't do it then it doesn't matter if it works. I'm not sure who I heard this from, but I'm pretty sure it was from a professional in the field - still take with a grain of salt just in case.

Cheers,

Dan
 
https://www.shearwater.com/products/swift/

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