Navigation Links
Morning UV exposure may be less damaging to the skin
Date:10/24/2011

(Embargoed) CHAPEL HILL Research from the University of North Carolina at Chapel Hill suggests that the timing of exposure to UV rays early in the morning or later in the afternoon can influence the onset of skin cancer.

The study, performed in mice, found that exposure to UV radiation in the morning increased the risk of skin cancer by 500 percent over identical doses in the afternoon. Although mice and humans both reside on a 24-hour day, the "circadian" clocks of these nocturnal and diurnal creatures run counter each other. This key difference in biology means that humans are most protected from the sun's harmful rays when mice are most susceptible, and vice versa.

"Therefore, our research would suggest that restricting sunbathing or visits to the tanning booth to morning hours would reduce the risk of skin cancer in humans," said senior study author Aziz Sancar, M.D., PhD, a member of the UNC Lineberger Comprehensive Cancer Center and Sarah Graham Kenan professor of biochemistry and biophysics in the UNC School of Medicine. Sancar is also a member of the National Academy of Sciences and the Turkish Academy of Sciences "However, further studies in humans are needed before we can make any definitive recommendations."

Sancar has previously shown that a protein called XPA, responsible for repairing the DNA damage wrought by UV radiation, waxes and wanes throughout the day. In a study published online the week of October 24-30 in the Proceedings of the National Academy of Sciences, he and his colleagues looked to see if the cyclical nature of this DNA repair molecule had an influence on the onset of skin cancer.

They exposed two groups of mice to UV radiation either at 4 a.m. or at 4 p.m. and waited for cancer to develop. Mice irradiated when the repair activity was at its minimum developed tumors much faster and at five-fold higher frequency compared with mice exposed to UV when the protein's repair functio
'/>"/>

Contact: Les Lang
llang@med.unc.edu
919-966-9366
University of North Carolina School of Medicine
Source:Eurekalert  

Page: 1 2

Related medicine news :

1. Lack of morning light keeping teenagers up at night
2. Severe Morning Sickness Passed From Moms to Daughters
3. O2 Media's Hit Morning TV Show ‘The Balancing Act' Welcomes Atkins Nutritionals to the Program
4. O2 Media's Hit Morning Show ‘The Balancing Act' Welcomes the Arthritis Foundation to the Program
5. O2 Media's Hit Morning Show ‘The Balancing Act' Welcomes Resident Chef Jeremy Hanlon to the Program
6. O2 Media's Hit Morning Show ‘The Balancing Act' Welcomes Dexter Russell, Inc. to the Program
7. O2 Media's Hit Morning TV Show ‘The Balancing Act' Welcomes Absolute Miracle Cream to the Program
8. O2 Media's Hit Morning Show ‘The Balancing Act' Welcomes HSA Bank to the Program
9. O2 Media's Hit Morning Show ‘The Balancing Act' Welcomes Dr. Bob Arnot to the Program
10. FDA Panel to Vote on New Morning After Pill
11. FDA Panel Backs New Morning After Pill
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Morning UV exposure may be less damaging to the skin
(Date:7/31/2015)... ... ... BioViva USA, Inc. (“BioViva”), a to-clinic gene therapy company based in Seattle, ... it has begun a fundraiser through Maximum Life Foundation (“MaxLife”) to use a promising ... will grant 100% of the money raised to BioViva to help bring pioneering gene ...
(Date:7/31/2015)... Church, VA (PRWEB) , ... July 31, 2015 ... ... Way, Oct. 20-21, 2015 – Washington, DC, http://www.fdanews.com/importexportprogram , Having FDA-regulated ... it doesn’t have to. , Instead of risking containment — or even destruction ...
(Date:7/31/2015)... Tampa, FL (PRWEB) , ... July 31, 2015 ... ... cancer patients using the RenovoCath,™ a novel catheter that was developed for targeted ... locally-advanced pancreatic cancer are now being treated at Florida Hospital Tampa with the ...
(Date:7/31/2015)... ... July 31, 2015 , ... Ticket Down is a ... Birmingham. The U.S. Women's National Soccer Team will face the Australia Women's National Team ... September 17th at Ford Field in Detroit and the second match will occur in ...
(Date:7/31/2015)... ... ... Indosoft, Inc., is pleased to announce a major update to its agent interface ... ACD system for Asterisk-based call centers . The new features make it easier ... agent only when wanted, and allows for validation of data as the agent enters ...
Breaking Medicine News(10 mins):Health News:BioViva USA, Inc.’s Alzheimer’s Disease Gene Therapy Human Trial 2Health News:BioViva USA, Inc.’s Alzheimer’s Disease Gene Therapy Human Trial 3Health News:FDAnews Announces — Successful Import/Export Programs: Former FDA Expert Shows the Way, Oct. 20-21, 2015 2Health News:FDAnews Announces — Successful Import/Export Programs: Former FDA Expert Shows the Way, Oct. 20-21, 2015 3Health News:FDAnews Announces — Successful Import/Export Programs: Former FDA Expert Shows the Way, Oct. 20-21, 2015 4Health News:Florida Hospital Tampa Expands Treatment Options for Patients with Pancreatic Cancer Using New Catheter Technology 2Health News:Florida Hospital Tampa Expands Treatment Options for Patients with Pancreatic Cancer Using New Catheter Technology 3Health News:Florida Hospital Tampa Expands Treatment Options for Patients with Pancreatic Cancer Using New Catheter Technology 4Health News:Cheap USA vs. Australia Tickets at Legion Field in Birmingham, AL: Ticket Down Slashes Ticket Prices for Australia vs. USWNT at Legion Field 2Health News:Q-Suite 5.9 Adds Validation Tools to Call Center Software Agent Screen 2
... Accepts as Complete DNV,s ... Hospital Deeming Authority, HOUSTON, March 24 The U.S. ... that its application to,deem hospitals in compliance with the Medicare ... formal review., If approved, DNV stands to become the ...
... Control of all Sites from a Single ... ... Dayton,Ohio has chosen multiple products from Sage Software - including the,Intergy by ... and improve the,patient experience. Previously, Digestive Specialists used The Medical,Manager by Sage., ...
... March 24 MedCath Corporation,(MedCath) (Nasdaq: MDTH ... Ohio) jointly announced today that the parties have,entered ... Samaritan,Hospital will acquire substantially all of Dayton Heart ... $55.0 million, a portion of,which is allocated to ...
... they,re not getting needed screenings for breast and cervical tumors ... of 32 studies suggests that obese women -- particularly white ... for breast and cervical cancer. , No one knows ... mammograms or Pap smears. And it,s not known why obesity ...
... BOSTON, March 24 "Going head-to-head with your child,can be ... ask,for some extra reading at bedtime and, before you know ... that you can,t refuse.,Well, if I can,t stay up late ... I guess you owe me a back rub and two ...
... Joint ST/Veredus lab set up in Singapore to develop future lab-on-chip ... ... SINGAPORE, March 24 Following the,success of the evaluation trials conducted ... STM ) today announced the commercial availability,of VereFlu(TM), a portable ...
Cached Medicine News:Health News:DNV Healthcare Advances in Bid to Accredit Hospitals 2Health News:Multi-site Gastro Practice Chooses Intergy by Sage Practice Management System 2Health News:MedCath Enters Definitive Agreement to Sell Dayton Heart Hospital to Good Samaritan Hospital-Dayton 2Health News:MedCath Enters Definitive Agreement to Sell Dayton Heart Hospital to Good Samaritan Hospital-Dayton 3Health News:Obese Women Less Likely to Be Tested for Some Cancers 2Health News:HOW TO UNSPOIL YOUR CHILD FAST: Harvard Medical School Psychologist Writes Book to Guide and Motivate Parents and Support the Children's Defense Fund 2Health News:STMicroelectronics and Veredus Laboratories Launch Market's First Lab-on-Chip for Rapid Molecular Flu Detection at Point of Need 2Health News:STMicroelectronics and Veredus Laboratories Launch Market's First Lab-on-Chip for Rapid Molecular Flu Detection at Point of Need 3
(Date:7/31/2015)... 31, 2015  Xcelience, a contract development and ... made a structured cash investment in Powdersize, a ... milling, micronization and powder size classification within the ... business while simultaneously adding a complete set of ... capabilities. "As we continue to ...
(Date:7/31/2015)... 2015  Xencor, Inc. (NASDAQ: XNCR ), a ... treatment of autoimmune diseases, asthma and allergic diseases, and ... Hata to its board of directors. ... development is a tremendous asset to our board," said ... officer of Xencor. "Xencor faces a range of opportunities ...
(Date:7/30/2015)... , July 30, 2015  ResMed (NYSE: ... signed a definitive agreement to acquire Curative ... ventilation and sleep-disordered breathing medical devices and ... market reputation in China, combined with ResMed,s global leadership in sleep and ... China suffering from ...
Breaking Medicine Technology:Xcelience Makes Structured Cash Investment in Powdersize 2Xcelience Makes Structured Cash Investment in Powdersize 3Xencor Appoints Yujiro S. Hata to Board of Directors 2Xencor Appoints Yujiro S. Hata to Board of Directors 3ResMed Invests in High-Growth Chinese Sleep and Respiratory Care Market with Curative Medical 2ResMed Invests in High-Growth Chinese Sleep and Respiratory Care Market with Curative Medical 3
... Calif., Oct. 27 ... beamforming technology, analog-front-end semiconductors and solutions for the ... Ultrasound Beamforming Development Kit.  Based on Samplify,s AutoFocus™ ... solution for the ultrasound front end, from probe ...
... Oct. 27 Solos Endoscopy, Inc. (Pink Sheets: ... revenues during the three months ended September 30, 2010 in ... ended September 30, 2009.  This was an increase of 34.8% for ... Despite a down global economy, Solos has been able ...
Cached Medicine Technology:Samplify's New Medical Ultrasound Development Kit Accelerates Equipment Time to Market By Up to 12 Months 2Samplify's New Medical Ultrasound Development Kit Accelerates Equipment Time to Market By Up to 12 Months 3Solos Endoscopy, Inc. Revenue Grows 34.8% for Third Quarter 2010 2
Illuminated Phoroptor Refracting Instrument. Illumination is provided by a cool-running, energy efficient LEDs (Light Emitting Diodes) that light only what you need to see without affecting the darke...
Red Lens Maddox...
The Snellen chart is the default optotype with the standard order of letters (T Z V E C L) as default. When the Refresh 'R' button is pressed, the letters ( or pictures ) are replaced with a random s...
Snellen 20' Eye Test Chart....
Medicine Products: