RSS Feed: TS-Si News Service. RSS Feed: TS-Si Research Service. TS-Si Reader Comments. Delicious: TS-Si News Service. Digg: TS-Si News Service.
Pinterest.
StumbleUpon. Facebook: TS-Si News Service.
GooglePlus: TS-Si News Service.
Twitter: Follow TS-Si News Service.
Leave a comment.
xkcd
Campaigns


is dedicated to the acceptance, medical
treatment, and legal
protection of individuals correcting the misalignment
of their brains and their anatomical sex, while supporting their transition
into society as hormonally reconstituted and surgically corrected citizens.
Automated Production Of Artificial Skin Print E-mail
SciMed - Healthcare
TS-Si News Service   
Friday, 12 December 2008 10:00
ArtHumanSkinFraun.jpgMünchen, Germany. The availability of viable skin for transplants during surgery can limit the quality of the outcome. This is a major concern of plastic and reconstructive surgeons who must ensure full function while doing the least harm to other areas of the body.
 
Transplanting skin is a painstaking task, and a transplant that has to cover large areas often requires several operations. Medical scientists have therefore been trying for a long time to grow artificial tissue. This “artificial skin” would allow them to treat these patients better and faster. However, the use of cultured skin tissue, an emerging technology, has been limited by by both cost and ready availability.
 
Development of a fully automated process is underway that can improve the production of artificial tissue, permitting surgeons to perform transplants with skin produced in the laboratory. This tissue is also suitable for testing chemicals at a low cost without requiring animal experiments. 
 
TS-Si Science & Medicine
Tübingen, Germany. Johannes Krause reviews John Reader's history of paleoanthropology, a story of exciting discoveries, contentious disputes, and immense promise. Humans are naturally fascinated by questions concerning our ...

Washington, DC, USA. Rising care prices were the chief health care cost driver for privately insured Americans in 2010, according to data from three of the largest health plans. The per capita spending on inpatient and outpa...

München, Germany. Kinesins, molecular motors key to cellular transport, can exhibit spiral motion, challenging assumptions that kinesins move only on straight paths. Kinesin movements are important to critical cellular func...

Zürich, Switzerland. Even a small amount of randomness can be amplified without limit, a finding with broad implications for physical and the biological sciences. The effects of this research could be considerable, given th...

Los Angeles, CA, USA. A large survey of human genetic variation found one genetic variant for every 17 bases, a dramatically higher rate than expected by the investigators. The procedures used for the study have implications...
The images shown above compare a cross-section through artificial skin (left) with a section through human skin (right). Both the natural and the artificial skin are made up of three layers. Image courtesy of Fraunhofer IGBTissue engineering has been at the focus of research for many years, and tissues such as cartilage or skin are already being cultured in numerous biotechnology laboratories.
 
But the researchers at the Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB in Stuttgart plan to go further and enable fully automated tissue production.
 
“Until now, methods of culturing tissue like that used for skin transplants have been very expensive,” says IGB head of department Professor Heike Mertsching. “Most of the steps are carried out manually, which means that the process is not particularly efficient.”
 
The researchers have therefore elaborated a novel conceptual design in collaboration with colleagues from the Fraunhofer Institutes for Production Technology IPT, Manufacturing Engineering and Automation IPA, and Cell Therapy and Immunology IZI. There are several steps involved:
  1. The first step is to take a sample of human tissue for biopsy and check for sterility.
     
  2. A gripper arm then transports the biopsy into the automated device.
     
  3. The machine:

    (a) cuts the biopsy into small pieces,
    (b) isolates the different cell types,
    (c) stimulates their growth, and
    (d) mixes the skin cells with collagen.
     
  4. A three-dimensional reconstruction of the different skin layers is produced with the aid of a special gel matrix — and the skin is ready.
     
  5. In the final step, the machine packages the cells for shipment.
Alternatively, the tissue can be cryopreserved — that is, deep-frozen and stored for later use. “It was important for us that the entire mechanical process is divided into separate modules,” says Mertsching.
 
“This enables us to replace or modify individual modules, depending what is needed for the production of different tissue types.” The method opens up almost unlimited new possibilities for the medical scientists. One of their upcoming projects is to produce intestinal tissue for resorption tests.
 
TS-Si News Service.The TS-Si News Service is a collaborative effort by TS-Si.org editors, contributors, and corresponding institutions. Sources can include the cited individuals and organizations, as well as TS-Si.org staff contributions. Articles and news reports do not necessarily convey official positions of TS-Si, its partners, or affiliates. We welcome your comments. Use the form below to leave a public comment or send private correspondence via the TS-Si Contact Page. We will not divulge any personal details or place you on a mailing list without your permission.


TS-Si is dedicated to the acceptance, medical treatment, and legal protection of individuals correcting the misalignment of their brains and their anatomical sex, while supporting their transition into society as hormonally reconstituted and surgically corrected citizens.


Comments (0)Add Comment

Write comment
smaller | bigger

busy
Last Updated on Friday, 12 December 2008 00:01