Saturday, December 3, 2011

Science Daily: Targeting Bacterial Gas Defenses Allow for Increased Efficacy of Numerous Antibiotics

Bacteria have pervaded the Earth ever since the dawn of the time. They are simple prokaryotic organisms that may multiply by binary fission to extraordinary amounts. That is why humans strive so hard to stop their action on our bodies as well as on other organisms. Antibiotics which first emerged in 1877 were the weapon that could be used to stop the onslaught. Although the results were spectacular at first, the bacteria developed resistance after only a few generations of exposure to the antibiotic (due to the DNA sharing in plasmids)

Bacillus anthracis
It has recently been recognized that H2S (hydrogen sulphide) may play a large part in protecting bacteria from various antibiotics. H2S acts as a general defense mechanism against oxidative stress, the process through which many antibiotics kill bacteria. This could prove to be a useful piece of information when considering when developing new techniques for the universal defence mechanism.

"In addition, the study demonstrates that bacteria that generate both H2S and nitric oxide (NO) simultaneously, such as B. anthracis (a causative of anthrax), cannot survive without both gases, even under normal growth conditions."
 This could prove to be another step to rid the world of all dangerous bacteria that could destroy our way of life which is something that everyone craves.


Joana Marques said...

You have great posts here, congratulations! ;)
This one has caught my attention a little quicker, bacteria and antibiotics interactions has always fascinated me!
Keep up with your passion for science! :D

Maciek said...

Brilliant as always !