Another Sunday….Christmas draws near….
Since I am not feeling very analytic today I thought I would post on something other than the approaching storm for this country.
I suppose that most everyone, that’s interested, has heard that those poor astronauts that were abandoned at the ISS will have to remain in space until at least March of 2025.
I have been irradiated so I got to thinking about all the cosmic radiation that space travelers will be subjected to as they travel the galaxy.
Then I came upon this story of Conan The Bacterium, as the researchers call it….( I was a huge Conan fan in my youth (the Barbarian not the Talk show host) the name just snap my attention.
Life is often viewed as fragile, especially when compared the vast and seemingly unfeeling infinite that is the ever-expanding universe—but then, you meet Deinococcus radiodurans. Nicknamed “Conan the Bacterium” after the famous beefy boy of comic legend, this extremophile earns its heroic nickname from being able to withstand not just immense cold and heat, but also acid, the vacuum of space, and (as the name radiodurans suggests) some 28,000 times more radiation than it would kill an average human.
D. radiodurans is the definition of peak performance.
Now, a new study led by scientists at Northwestern University investigates exactly how this wonder bacterium can survive so many extreme environments that’d spell the end of any other species. This examination led to a collection of simple metabolites—the end product of biological metabolism—and how they interact with manganese to form a powerful antioxidant.
Inspired by this process, the researchers constructed a synthetic antioxidant called MDP made from manganese ions, phosphate and a small peptide, and found that these components provided incredible radiation protection—far beyond the protection of the manganese paired with only one other component. The results of the study were published in the journal Proceedings of the National Academy of Sciences (PNAS).
“We’ve long known that manganese ions and phosphate together make a strong antioxidant, but discovering and understanding the ‘magic’ potency provided by the addition of the third component is a breakthrough,” Brian Hoffman, senior author of the study from Northwestern, said in a press statement. “This study has provided the key to understanding why this combination is such a powerful—and promising—radioprotectant.”
When analyzing the scenario of D. radiodurans surviving on the surface of Mars, Hoffman and his team measured the amount of manganese antioxidants using an advanced spectroscopy technique, and discovered that the amount of manganese antioxidants and the amount of radiation protection formed a positive correlation—more of one means more of the other.
This could obviously have immense applications for humans as we continue exploring the Solar System and beyond—after all, space tends to be pretty irradiated. So, a “radioprotectant” (as Hoffman calls it) that’s tailor-made for humans—whether used in spacecraft shielding or space suits—could be immensely beneficial.
“This new understanding of MDP could lead to the development of even more potent manganese-based antioxidants for applications in health care, industry, defense and space exploration,” Michael Daly, a co-author of the study from Uniformed Services University, said in a press statement.
Maybe this mighty bacterium’s name is a compliment to Conan the Barbarian, rather than the other way around.
(popularmechanics.com)
Now we have our own version of ‘Starship Troopers’ that eventually venture into space to face the evils that threaten the earth….this process could save lives lost to radiation.
Maybe not earth shattering but interesting…..
I Read, I Write, You Know
“lego ergo scribo”