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:1/6/2017)... Calif. , Jan. 5, 2017  Delta ID ... its iris scanning technology for automotive at CES® 2017. ... GNTX ) to demonstrate the use of iris ... identify and authenticate the driver in a car, and ... during the driving experience. Delta ID and ...
(Date:12/22/2016)... Calif. , Dec. 20, 2016  As part of ... 23andMe, the leading personal genetics company, recently released its latest ... . The book focuses on the topics of inheritance ... Generation Science Standards (NGSS) taught in elementary school classrooms in ... in a series by illustrator Ariana Killoran , whose ...
(Date:12/19/2016)... BARCELONA , España y TORONTO , 19 ... fusión con Northern Biologics Inc. que permitirá el desarrollo acelerado de ... ensayos clínicos en varios tipos de tumor en 2017, con múltiples ... ... de su clase con objetivo en el factor inhibidor de leucemia ...
Breaking Biology News(10 mins):
(Date:1/19/2017)... Basel, Switzerland (PRWEB) , ... ... ... leading provider of advanced software solutions for pharmaceutical research and development (R&D), ... project-based expertise in omic data analysis and interpretation for the rapidly evolving ...
(Date:1/19/2017)... GAITHERSBURG, Md. , Jan. 19, ... Altimmune, Inc., a privately-held immunotherapeutics company targeting infectious ... agreement for the merger of PharmAthene and Altimmune ... Novartis Venture Fund, HealthCap, Truffle Capital and Redmont ... and diversified immunotherapeutics company with four clinical stage ...
(Date:1/19/2017)... -- AquaBounty Technologies, Inc. (AIM: ABTU; NASDAQ: AQB), a ... a majority-owned subsidiary of Intrexon Corporation (NYSE: ... of its common shares on the NASDAQ Stock Market ... "AquaBounty,s listing on NASDAQ represents an important milestone for ... U.S. markets as we advance plans for commercial production ...
(Date:1/19/2017)... (PRWEB) , ... January 18, 2017 , ... ... for tech innovators, engineers, and scientists from around the world, was today awarded ... The awards program is based entirely on merit and decided upon by a ...
Breaking Biology Technology: