Navigation Links
A novel in vitro model for light-induced wound healing
Date:3/4/2010

Washington, DC, USA Today, during the 39th Annual Meeting of the American Association for Dental Research, convening at the Walter E. Washington Convention Center in Washington, DC, lead researcher C. Millan (U.S. Army Dental Corps, Martinez, Georgia) will present a poster of a study titled "A Novel In Vitro Model for Light-Induced Wound Healing." Studies have suggested that exposure to minimal doses of blue-violet light (400-500 nm) elicits production of small amounts of reactive oxygen species (ROS), and contributes to increased mitochondrial activity and cell growth in epithelial cells. Many growth factor signaling pathways generate ROS.

In this study, Millan and other researchers involved in this study hypothesize that exposure to blue-violet light may enhance cell growth. To test this hypothesis, they developed a novel in-vitro wound healing model that allowed them to monitor the cellular responses to a single, small dose of light in cultured cells.

Normal human epidermal keratinocytes (NHEK) and human gingival fibroblasts (HGF) were plated around cloning cylinders. At confluency, the cylinders were removed to create a wound. Cells were treated with a single 5 J/cm2 light dose delivered by a quartz-tungsten-halogen light source. Mitochondrial succinate dehydrogenase activity was measured via a standard MTT assay, and cell proliferation was assessed using DRAQ5 DNA dye. Conditioned media were collected at each time point and used in a growth factor antibody array (RayBio) to compare the secretion products.

Growth factor array results showed that NHEK responded to blue light exposure by increasing secretion of several growth factors including insulin-like growth factor binding protein-1, amphiregulin, epidermal growth factor and fibroblast growth factor-b. Likewise, mitochondrial dehydrogenase activity and cell proliferation were enhanced in NHEK. In contrast, HGF did not respond to blue light exposure significantly in any of the parameters tested.

These results show that NHEK cells responded robustly to a single, small dose of light by increasing their mitochondrial activity, DNA synthesis, and production of growth factors. Together, these data suggest that blue light may be useful to enhance epithelial cell growth in a wound site.


'/>"/>

Contact: Ingrid Thomas
ithomas@aadronline.org
703-299-8084
International & American Association for Dental Research
Source:Eurekalert

Related medicine news :

1. Novel 3-D cell culture model shows selective tumour uptake of nanoparticles
2. Novel virus detection identifies new viruses in study of respiratory infections and asthma attacks
3. Researchers uncover novel mechanism that balances the sizes of functional areas in the brain
4. Novel Cooling Therapy May Have Aided Injured Football Player
5. ECLIPSE data on effects of Otsukas investigational novel treatment, Tolvaptan
6. SNM seeks novel approaches to molecular imaging to showcase at annual meeting
7. GrantAdler Shipping Novel Implantable Vascular Access Port
8. SNM seeks novel approaches to molecular imaging to showcase at annual meeting
9. Novel strategy under study for aggressive leukemia
10. ISTO Technologies Receives 510(k) Clearance for a Novel Bone Graft Substitute and Bone Graft Extender
11. 454 Sequencing(TM): Science Paper Describes a Novel, Highly Efficient Method of Sequencing Ancient DNA; Sequences the Mitochondria of 10 Individual Mammoths to Prove It
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/23/2017)... , ... May 23, 2017 , ... Allegheny Health ... open The Alexis Joy D’Achille Center for Women’s Behavioral Health at West Penn ... in western Pennsylvania for women suffering from pregnancy-related depression. Construction of the Center ...
(Date:5/23/2017)... ... , ... The National Council on Strength and Fitness (NCSF), ... Certified Strength Coach credential has earned accreditation from the National Commission for Certifying ... of qualified candidates for jobs in the Strength and Conditioning profession. The CSC ...
(Date:5/23/2017)... ... May 23, 2017 , ... MedTech ... in the modern ART laboratory, to provide hands-on training utilizing cutting-edge equipment at ... NextGen LifeLabs, a MedTech Group Purchasing vendor , will provide specialized equipment ...
(Date:5/23/2017)... CA (PRWEB) , ... May 23, 2017 , ... ... can now receive treatment using the SPEED System™ Orthodontics, with or without a ... orthodontist in El Segundo, CA, who is skilled in providing patients ...
(Date:5/22/2017)... NC (PRWEB) , ... May 22, 2017 , ... ... Matthews Periodontics, is now welcoming new patients with periodontal plastic surgery treatments, including ... from a general dentist. Dr. Green provides these esthetic and functional procedures to ...
Breaking Medicine News(10 mins):
(Date:5/18/2017)... , May 17, 2017  Bayer announced today ... portfolio will be presented at the 53 rd ... (ASCO), taking place June 2-6 in Chicago ... at ASCO span prostate, colorectal, liver and thyroid cancers, ... from the Phase II CHRONOS-1 trial of copanlisib in ...
(Date:5/12/2017)... and Canada joint tech company Laughing Face has ... detergent, and features a powerful disinfection process. The company ... washes and sanitizes women,s panties or babies, cloth diapers in 25 ... ... an external water inlet. ...
(Date:5/10/2017)... , May 10, 2017 Global Health ... Latin America , published its 2017 ranking ... ranking is based on extensive data analysis from GHI,s ... largest hospitals database for the region. The GHI database covers ... , offering more than 130 data points for each institution ...
Breaking Medicine Technology: