405-470nM kills MRSA bacteria!

Does this mean you could heal an infected wound by shining your bluray on it - Hmm?

http://abmed.wordpress.com/2009/01/30/antibiotic-resistant-staph-infection-destroyed-by-blue-light/

It depends on how far your staph penetrates :O

Kage said:

Does this mean you could heal an infected wound by shining your bluray on it - Hmm?  

Click to expand...

No. There was a thread on this before. Basically, don't shine high powered blu-ray lasers on your skin/wounds unless you know what you're doing. In this case, you obviously don't.

Perhaps it could work for the most superficial infections under controlled circumstances.

Trying to stop a would from bleeding by exposing it to bright light doesnt seem a very good option generally either. Not because it wouldn't work at all, but more because more effective agents (such as clean cloth or even tap water) are generally available.

In the worst case you could sustain a nasty burn that might prove prone to infection and hard to heal.

I believe they're using LED-based sources, not lasers. A laser would be too focused to do any good, even if you unfocused it since it would likely not have enough energy density, plus the potential for burns or eye damage with improper usage.

As mentioned, soap and water works wonders for cleaning a wound, so just stick to that

Alcohol or peroxide for me, thanks.

I heard that you can cure syphilis, gonorrhea and maybe even chlamydia with the RPL 425 (but only the silver one) ;D ;D ;D ;D. But even if you can't, you'll be having so much fun playing with it that you'll forget that you have a venereal disease (or three).    Bill

Would you be able to use a 100mW blu-ray to "clean" the kitchen counter and bathroom too? I wonder if it would work on food? Looks like more data is still needed. You could even "wash" your hands with a laser?! I'm taking the article to extremes but it sounds good at least for one type of bacteria.

WRM said:

I heard that you can cure syphilis, gonorrhea and maybe even chlamydia with the RPL 425 (but only the silver one) ;D ;D ;D ;D. But even if you can't, you'll be having so much fun playing with it that you'll forget that you have a venereal disease (or three).    Bill

Click to expand...

Lol, I can imagine...
"Steady, steady, STEADY! OUCH, IT FREAKIN' STINGS!!!"

Using this rather then starting a new a thread. I have a blu-ray that hits over 330mW and is extremely small. I'd love to know if I could use it to "clean" bacteria away so to speak.

If you guys pay attention the article is not about curing/killing staph with 405nm, they are using 470nm. the 405nm worked only in lab colonies.

michael

My 8x Blu smokes bugs on my windows and REALLY smoked a June bug last night. If it can be heated by that wavelength, it will make it toast !!
Mike

Hemlock_Mike said:

My 8x Blu smokes bugs on my windows and REALLY smoked a June bug last night. If it can be heated by that wavelength, it will make it toast !!
Mike

Click to expand...

Thanks Mike, when get around to paying a few bills, and saving. I'll be sure to use an 8X to toast my bread. Oh, well it might toast bread too.

I saw these UV lights for sale that were supposed to remove bacteria in the work place, looked like a gimmick. I just thought the same would be possible with a blu-ray too.

Then this 18 Watt 395nm LED fixture I built,
should work on that MRSA bug:



LarryDFW

405nm will actually kill MRSA in vivo, but it does not penetrate deeply enough to get to a colony that is located more than 0.1mm or so into the skin, less for pigmented skin. A 470nm laser will go further in, and thus be more useful.

However, you can use 405nm to clean out a superficial pseudomonas colony, as well as sterilizing surfaces that harbor such colonies (typically found in the kitchen, in bathrooms and a few other places). They tend to end up in your ear if you do get a colony, and that can be painful. After a few rounds of topical treatments, I decided to try it with a recurring outer ear colony. Worked like a charm. The doctor wishes he had a medical use approved unit. Make sure it's set to flashlight spread, though.

Incidentally, pseudomonas produces fluorescin, which is used in dye lasers. It is readily pumped by a bluray diode, but homebrew folks usually pump it with a nitrogen TEA laser instead, due to the higher power output. You can buy fluorescin at a chemistry supply store. Don't grow your own. For low powers, I think a Venturi pump, a capillary glass, a small tube, the mirrors and a marker pen should be sufficient to see some action.

I think the blue or violet LED may do a better job.
Laser may be good for selected, very special wavelength, then can be a highly efficiency tool for biomedical application