Navigation Links
Tips from the Journals of the American Society for Microbiology
Date:7/22/2008

Blue Light and Hydrogen Peroxide May Effectively Treat Biofilms That Cause Cavities and Gum Disease

Blue light commonly used by dentists to cure resin fillings and hydrogen peroxide (H2O2) combined may be capable of reaching and treating bacteria in deep layers of biofilms that can cause cavities and gingivitis. The researchers from Hebrew University, Hadassah, Jerusalem, Israel and the University of California San Francisco report their findings in the July 2008 issue of the journal Antimicrobial Agents and Chemotherapy.

Most bacteria in nature exist in communities of biofilms, structures that serve as physical barriers and severely limit the effect of antibacterial agents. Oral biofilms are commonly associated with infections such as cavities, gingivitis and periodontal disease. With antibiotic resistance continually on the rise, researchers are exploring alternative sterilization methods to effectively treat biofilms.

In the study biofilms of Streptococcus mutans were exposed to wavelengths of visible light consisting of 400 to 500 nm for 30 to 60 seconds while in the presence of 3 to 300 mM of hydrogen peroxide. Microbial counts from each treated sample were compared with those of the control and results showed that visible light and hydrogen peroxide combined successfully penetrated all layers of the biofilm creating an antibacterial effect.

"The ability of noncoherent visible light in combination with H2O2 to affect bacteria in deep layers of the biofilm suggests that this treatment may be applied in biofilm-related diseases as a minimally invasive antibacterial procedure," say the researchers.

(D. Steinberg, D. Moreinos, J. Featherstone, M. Shemesh, O. Feuerstein. 2008. Genetic and physiological effects of noncoherent visible light combined with hydrogen peroxide on Streptococcus mutans in biofilm. Antimicrobial Agents and Chemotherapy<
'/>"/>

Contact: Carrie Slijepcevic
cslijepcevic@asmusa.org
American Society for Microbiology
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Tips from the Journals of the American Society for Microbiology
2. ESA celebrates 100 years of insect science journals
3. Springer and the New York Botanical Garden Press join forces to publish botanical journals
4. 200 journals join in theme issues on poverty and human development
5. Tips from the Journals of the American Society for Microbiology
6. Humana Press journals now available on SpringerLink
7. Tips from the Journals of the American Society for Microbiology
8. American Chemical Societys Weekly PressPac -- Aug. 8, 2007
9. Understanding hypertension in African Americans proves elusive
10. American Chemical Societys Weekly PressPac -- Aug. 15, 2007
11. American College of Medical Genetics responds to new FDA labeling decision for warfarin
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... Shenzhen, July 10, 2014---A team of researchers from The ... have identified a gene of wild soybean linked to ... to grow in saline soil. This study published online ... to unveil novel genomic information for crop improvement. , ... to domestication and human selection, cultivated soybeans have less ...
(Date:7/11/2014)... group members to reduce aggression and gain access to ... grooming activities shows a certain pattern across the day. ... Biology Letters . , Grooming between individuals in ... motives. To be groomed has hygienic benefits and is ... can provide access to infants, mating opportunities and high ...
(Date:7/11/2014)... Sweden, have explored two different ways that allow ... to the formation of oxygen molecules in photosynthesis. ... scientific journal Nature Communications . , "The ... catalysts for water oxidation, which are key components ... storage of solar energy in fuels like hydrogen, ...
Breaking Biology News(10 mins):BGI reports a novel gene for salt tolerance found in wild soybean 2Baboons groom early in the day to get benefits later 2Molecular snapshots of oxygen formation in photosynthesis 2
... team has brought powerful software to the never-ending arms ... and biochemists have developed and laboratory-tested a computer program ... that bacteria use to make natural antibiotics. ... known as the algorithm "K*" (pronounced K Star)-- is ...
... dioxide (CO2) distinguishes itself as the fastest growing greenhouse ... of CO2 emissions depends on our ability to measure ... of the increase. Until the late 1950s ... many questioned whether the industrial revolution and the associated ...
... gene variants associated with an increased incidence of hypertension ... and kidney failure. The report receiving early online release ... in genes for proteins involved with cardiovascular response to ... an association previously seen in animals but not demonstrated ...
Cached Biology News:Duke software dramatically speeds enzyme design 2Duke software dramatically speeds enzyme design 3Carbon accounting from atmospheric measurements -- the aircraft perspective 2Common gene variants increase risk of hypertension, may lead to new therapies 2
(Date:7/10/2014)... On July 9 Prime Minister ... Russia,s first national "Industry" award ... is developing a unique project called MabNext . ... number of innovative drugs based on monoclonal antibodies for ... place at the International Exhibition "Innoprom 2014" in Ekaterinburg. ...
(Date:7/10/2014)... , July 10, 2014 Research ... addition of the "International Photonic Integrated Circuit ... Forecasts to 2019" report to their offering. ... The concept of photonic integration traces its ... century. The promise of photonic integration went unexplored ...
(Date:7/10/2014)... research may help in the fight against terrorism with ... quantities of explosives with the use of light and ... Sensors and Actuators B: Chemical , the researchers describe ... in concentrations as low as 6.3 ppm (parts per ... few minutes. , "Traditionally explosives detection has involved looking ...
(Date:7/10/2014)... the basis of psychiatric disorders has been extremely challenging ... risk but are insufficient to cause disease. Now investigators ... Press journal Cell Stem Cell describe a ... risks interact with other risk factors or environmental exposures ... research pinpoints a genetic variant that may predispose individuals ...
Breaking Biology Technology:Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2International Photonic Integrated Circuit (Monolithic Integration, Hybrid Integration, Module Integration) Market - Forecasts to 2019 2Detecting trace amounts of explosives with light 2New strategy could uncover genes at the root of psychiatric illnesses 2
... Inc. (Xennex) announced today that it is collaborating ... with access to GeneCards(R) and associated proprietary tools, ... the advanced prototype of GeneCards(R) version 3.0, which ... utilizing GeneCards and the related technology for research ...
... in German . , The enzyme ... able to rapidly ,and efficiently detoxify chemical warfare agents ... subway attacks in 1995. A detailed understanding ,of the ... for efforts aiming to improve their properties. A group ...
... Pharmaceuticals, Inc. (Nasdaq: ANDS ) announced today ... on Thursday, April 23, 2009, after the U.S. financial ... on Thursday, April 23, 2009 at 5:00 p.m. Eastern ... results and highlights and to provide an update on ...
Cached Biology Technology:Xennex Inc. Providing Satoris Inc. with Latest GeneCards(R) Tools for Characterization of Protein Biomarkers Associated With Neurological Conditions 2Xennex Inc. Providing Satoris Inc. with Latest GeneCards(R) Tools for Characterization of Protein Biomarkers Associated With Neurological Conditions 3Structure of enzyme against chemical warfare agents determined 2Anadys Pharmaceuticals to Report First Quarter 2009 Financial Results 2
... containing a clone of the human Topoisomerase II ... alters the topological state of nucleic acids by ... break which generates a separate DNA helix (1,2) ... passage mechanism, the enzyme can relax negatively or ...
... Topo I, Wild Type Liquid. In ... DTT, 200 µM EDTA, 20% glycerol, pH 7.9. ... I) is a monomeric protein of 765 amino ... the relaxation of both positive and negative supercoiled ...
Request Info...
... RNA polymerase is a DNA-dependent RNA polymerase ... promoters. It efficiently synthesizes in vitro ... down stream from a T7 promoter. ... templates for in vitro translation, substrates in ...
Biology Products: