Navigation Links
DNA can be damaged by very low-energy radiation
Date:3/13/2014

"Very low-energy radiation also damages DNA: how safe are "eye-safe" lasers?"

Damage to DNA by high energy radiation constitutes the most lethal damage occurring at the cellular level. Surprisingly, very low-energy interactions - with OH radicals, for instance - can also induce DNA damage, including double strand breaks. It is known that single strand breaks in the DNA backbone are amenable to repair but most double strand breaks are irreparable. The propensity with which slow OH radicals damage DNA depends on their rotational energy: rotationally "hot" OH is more proficient in causing double breaks. These novel findings are from experiments conducted on DNA in a physiological environment. Intense femtosecond laser pulses are propagated through water (in which DNA plasmids are suspended), creating plasma channels within water, resulting in generation, in situ, of electrons and OH radicals. It is shown that use of long laser wavelength light (1350 nm and 2200 nm) ensures only OH-induced damage to DNA is accessed. It is noteworthy that industry presently characterizes as "eye-safe" lasers that emit at wavelengths longer than 1300 nm.

But it is such wavelengths that are proficient at inducing damage to DNA: how safe is "eye-safe" when DNA in the eye can be readily damaged?


'/>"/>

Contact: Deepak Mathur
atmol1@tifr.res.in
91-222-278-2736
Tata Institute of Fundamental Research
Source:Eurekalert

Page: 1

Related biology news :

1. Vitamin P as a potential approach for the treatment of damaged motor neurons
2. Restoration and recommendations for flood-damaged bottomlands
3. Zebrafish may hold the answer to repairing damaged retinas and returning eyesight to people
4. Gene therapy reprograms scar tissue in damaged hearts into healthy heart muscle
5. New technique to deliver stem cell therapy may help damaged eyes regain their sight
6. A step forward in regenerating and repairing damaged nerve cells
7. Stem cells can repair a damaged cornea
8. The space double-whammy: Less gravity, more radiation
9. Moderate doses of radiation therapy to unaffected breast may prevent second breast cancers
10. Fetal stem cell transplantation favorably impacts radiation-induced cognitive dysfunction
11. Invention could make spent nuclear fuel useful for irradiation purposes
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/6/2017)... , May 5, 2017 RAM ... announced a new breakthrough in biometric authentication based ... quantum mechanical properties to perform biometric authentication. These new ... semiconductor material created by Ram Group and its ... entertainment, transportation, supply chains and security. Ram Group ...
(Date:4/18/2017)... Inc., a global expert in SoC-based imaging and computing solutions, has ... features the company,s hybrid codec technology. A demonstration utilizing TeraFaces ® ... be showcased during the upcoming Medtec Japan at Tokyo Big Sight ... Las Vegas Convention Center April 24-27. ... Click here for an image of the ...
(Date:4/13/2017)... April 13, 2017 According to a new market ... Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, ... Market is expected to grow from USD 14.30 Billion in 2017 to ... of 17.3%. ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:7/14/2017)... ... July 14, 2017 , ... Sonic ... Sonic Manufacturing Technologies has installed a solar system on its roof top. “We ... the President of Sonic, Kenneth Raab stated. The company’s proud history of social ...
(Date:7/14/2017)... ... July 14, 2017 , ... Diagenode ... of proteins to clean peptides for mass spectrometry (MS) analysis combining the PreOmics ... PreOmics iST Kit is based on proprietary technology that contains optimized buffer systems ...
(Date:7/13/2017)... ... July 13, 2017 , ... In’Tech Medical SAS ( http://www.intech-medical.com ... the completion of a major transaction with Eurazeo PME. The reputable French private ... alliance fuels In’Tech Medical’s service offerings while leveraging the company’s manufacturing expertise and ...
(Date:7/13/2017)... PA (PRWEB) , ... July 13, 2017 , ... ... business acceleration programs at Philadelphia’s University City Science Center, Christopher Laing, MRCVS, Ph.D. ... zone in Austin, Texas. Dr. Laing will become the first Executive Director ...
Breaking Biology Technology: