Featured Research

from universities, journals, and other organizations

Fighting wrinkles with lasers scientifically unraveled

Date:
October 25, 2010
Source:
Eindhoven University of Technology
Summary:
Laser pulses enable skin rejuvenation, as research in the Netherlands has shown. Laser treatment introduces heat into the skin. Under the influence of heat shocks of 45C, skin cells produce more collagen. This is the protein that gives the skin its firmness and elasticity.

Laser pulses enable skin rejuvenation, as research at Eindhoven University of Technology (TU/e) has shown. Laser treatment introduces heat into the skin. Under the influence of heat shocks of 45C, skin cells produce more collagen. This is the protein that gives the skin its firmness and elasticity. Susanne Dams describes this process in the dissertation for which she gained her PhD degree from the Biomedical Engineering Department at TU/e.

Laser treatment is quite common in the practices of beauticians and dermatologists. Although the technique has been widely used for many years, its impact and the underlying processes are still to be unraveled. The effect of light has been studied before, but according to researcher Susanne Dams there is still little understanding about the effect of the heat introduced by a laser. Research performed by Dams now provides a better understanding of this process.

The researcher first tested the effect of heat on cell cultures, by giving them heat shocks of 45 and 60C without a laser. This excluded possible effects generated by the laser light. Subsequently, she conducted similar tests on pieces of excised human skin, and at a later stage she heated pieces of skin with a laser. The results of these tests were in line with the earlier tests.

She showed that the heat shocks led to increased production of collagen, which is considered to be one of the important factors in skin rejuvenation. The production of this protein by the human body declines after the age of 25, causing wrinkles to form and making the skin sag. The best effect was found to result from a heat shock of 45C lasting eight to ten seconds. It was also shown that higher temperatures cause damage to the skin cells. Dams established in her tests that heating cells in culture for two seconds at 60C results in cell necrosis.

The question of how long the skin-rejuvenating effect of the laser treatment lasts remains unanswered for the moment. Dams discovered that after a heat shock the gene expression (the precursor to the formation of the protein) returns to its normal level after 48 hours. However, the extra collagen produced as a result of the increased gene expression contributes to skin rejuvenation for a longer period.

Although this study suggests that it is heat rather than light that rejuvenates the skin, the laser still remains the instrument of choice in the opinion of Dams. "A laser allows treatment with great precision, because it can specifically heat specific elements in the skin while leaving the rest unharmed. This allows the optimal effect to be achieved."

Dams conducted her research in cooperation with Philips Research Eindhoven.


Story Source:

The above story is based on materials provided by Eindhoven University of Technology. Note: Materials may be edited for content and length.


Cite This Page:

Eindhoven University of Technology. "Fighting wrinkles with lasers scientifically unraveled." ScienceDaily. ScienceDaily, 25 October 2010. <www.sciencedaily.com/releases/2010/10/101021141000.htm>.
Eindhoven University of Technology. (2010, October 25). Fighting wrinkles with lasers scientifically unraveled. ScienceDaily. Retrieved September 23, 2014 from www.sciencedaily.com/releases/2010/10/101021141000.htm
Eindhoven University of Technology. "Fighting wrinkles with lasers scientifically unraveled." ScienceDaily. www.sciencedaily.com/releases/2010/10/101021141000.htm (accessed September 23, 2014).

Share This



More Health & Medicine News

Tuesday, September 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Liberia Pleads for Help to Fight Ebola

Liberia Pleads for Help to Fight Ebola

AP (Sep. 22, 2014) Liberia's finance minister is urging the international community to quickly follow through on pledges of cash to battle Ebola. Bodies are piling up in the capital Monrovia as the nation awaits more help. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Ebola Doctor Says Border Controls Critical

Ebola Doctor Says Border Controls Critical

AP (Sep. 22, 2014) A Florida doctor who helped fight the expanding Ebola outbreak in West Africa says the disease can be stopped, but only if nations quickly step up their response and make border control a priority. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Global Ebola Aid Increasing But Critics Say It's Late

Global Ebola Aid Increasing But Critics Say It's Late

Newsy (Sep. 21, 2014) More than 100 tons of medical supplies were sent to West Africa on Saturday, but aid workers say the global response is still sluggish. Video provided by Newsy
Powered by NewsLook.com
Sierra Leone in Lockdown to Control Ebola

Sierra Leone in Lockdown to Control Ebola

AP (Sep. 21, 2014) Sierra Leone residents remained in lockdown on Saturday as part of a massive effort to confine millions of people to their homes in a bid to stem the biggest Ebola outbreak in history. (Sept. 20) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins