Navigation Links
An artificial cornea is in sight, thanks to biomimetic hydrogels

If eyes are "the windows of the soul," corneas are the panes in those windows. They shield the eye from dust and germs. They also act as the eye's outermost lens, contributing up to 75 percent of the eye's focusing power. On Sept. 11 in San Francisco at the annual meeting of the American Chemical Society, chemical engineer Curtis W. Frank will present a novel biomimetic material that's finding its way into artificial corneas. It's a hydrogel, or polymer that holds a lot of water. That material may promise a new view for at least 10 million people worldwide who are blind due to damaged or diseased corneas or many millions more who are nearsighted or farsighted due to misshapen corneas.

Called DuoptixTM, the material can swell to a water content of 80 percent--about the same as biological tissues. It's made of two interwoven networks of hydrogels. One network, made of polyethylene glycol molecules, resists the accumulation of surface proteins and inflammation. The other network is made of molecules of polyacrylic acid, a relative of the superabsorbent material in diapers.

"Think of a fishnet, but think of a 3-D fishnet," says Frank, the W. M. Keck, Sr. Professor in Engineering and a professor, by courtesy, of chemistry and of materials science and engineering. "It's a strong, stretchy material." That makes it able to survive suturing during surgery. The biocompatible hydrogel is transparent and permeable to nutrients, including glucose, the cornea's favorite food.

Collaborators on the hydrogel work that Frank is presenting at the chemists' meeting are Marianne E. Harmon, a former Stanford doctoral student now with GE Corporate Research Lab in Schenectady, N.Y.; Dirk Kucklung, an assistant professor at the Institute for Polymer Science in Dresden, Germany; Wolfgang Knoll, director of the Max Planck Institute for Polymer Research in Mainz, Germany; and David Myung, a medical student jointly working on a doctorate in chemic
'"/>

Source:Stanford University


Page: 1 2 3 4

Related biology news :

1. Bioartificial kidney under study at MCG
2. Ophthalmologists implant five patients with artificial silicon retina microchip
3. UCSD medical/bioengineering reseachers show titanium debris satobtage artificial joints
4. Bad aftertaste? New sensory on/off switch may cure bane of artificial sweetener search
5. Researchers create functioning artificial proteins using natures rules
6. UC Berkeley researchers create a biologically-inspired artificial compound eye
7. Secrets of the sea yield stronger artificial bone
8. Stimulation of the semicircular canals can artificially control human walking and balance
9. Bacteria could make new library of cancer drugs that are too complex to create artificially
10. Hair-growth drug artificially lowers PSA levels in prostate cancer screening, study finds
11. Mechanical artificial hearts can remove need for heart transplant by returning heart to normal
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: artificial cornea sight thanks biomimetic hydrogels

(Date:7/22/2014)... trees and not just asphalt and recreation equipment reduces ... Colorado Boulder study. , Working on class assignments or ... youth, according to a paper published in the journal ... of the first of its kind to focus on ... stress. , "Many schools already offer stress management programs, ...
(Date:7/22/2014)... meerkats which sees them prevent their daughters from breeding, ... study. , Research into the desert creatures which live ... helpers shows that the alpha female can flourish when ... shows how this way of life, also found in many ... its sinister side. , Dominant meerkats control breeding within ...
(Date:7/22/2014)... much is known about the the genus of planthopper ... a new one was recently discovered in the southern ... of Jaen. A description of it appears in the ... http://www.insectscience.org/14.92/ ). , The new species, Conosimus baenai ... hemipterologist, for his contributions to the taxonomy of Iberian ...
Breaking Biology News(10 mins):Natural-terrain schoolyards reduce children's stress, says Colorado University-Boulder study 2Natural-terrain schoolyards reduce children's stress, says Colorado University-Boulder study 3
... lives and livelihoods of some of the poorest people on ... the Times Higher Education awards ceremony in London, Dr Bhaskar ... and Civil Engineering received the Outstanding Engineering Research Team of ... in tackling the world,s worst case of ongoing mass poisoning ...
... mystery of how an abundance of fossils have been marvellously ... region of Africa has been solved by a team of ... They have established that an ancient wind brought life to ... of the dead. Sarah Gabbott, Jan Zalasiewicz and colleagues ...
... garden bird of many countries in Europe and Asia. ... it has long been known individuals vary considerably in their ... as "fast" or "proactive" are quick explorers and are ... The differences are at least in part genetically determined ...
Cached Biology News:Queen's life-saving research wins education 'Oscar' 2Bird-brained? Birds' personalities are correlated with their hormone levels 2
(Date:7/22/2014)... Massachusetts og SHENZHEN ... Tech Solutions Co., LTD, (BGI Tech), et datterselskab ... lancering af en ny human whole exome-sekvenseringstjeneste baseret ... Complete Genomics, højt anset i branchen for at ... højfølsom registrering af alle typer varianter, blev købt ...
(Date:7/22/2014)... Switzerland (PRWEB) July 22, 2014 ... are becoming an increasingly common sight. The rapid ... they are now well- established as a core ... low maintenance has made them the gas analyzer ... locations and conditions encountered in some processes have ...
(Date:7/22/2014)... (PRWEB) July 22, 2014 Holomic ... with the debut of its fluorescent immunoassay reader, ... Chemistry (AACC) meeting in Chicago, July 28-31, 2014. ... top versions, the HRDR-300 is a highly sensitive, ... to analyze fluorescent lateral flow immunoassays with high ...
(Date:7/21/2014)... 21, 2014 Lawrence Livermore ... Board (WIB) and Las Positas College (LPC) recently ... education and hands-on training for veterans, officials recently ... at Las Positas is designed to help ... engineering technician careers, and establishes a pipeline of ...
Breaking Biology Technology:BGI Tech lancerer Human Whole Exome-sekvenseringstjeneste på Complete Genomics avancerede platform 2METTLER TOLEDO Shows How Tunable Diode Lasers (TDLs) Can Be Installed Where No TDLs Have Gone Before 2Holomic to Debut HRDR-300 Fluorescent Immunoassay Reader at the AACC 2014 2Engineering Program Established for Veterans 2Engineering Program Established for Veterans 3
... to build business through conversion of agricultural ... products into advanced materials, COLUMBUS, Ohio, ... task force aimed at accelerating the state,business climate by maximizing ties ... No. 1 polymer industry., (Logo: http://www.newscom.com/cgi-bin/prnh/20071107/CLW113LOGO ), ...
... Head of PEGylation Business Unit, SAN CARLOS, Calif., ... today that Hoyoung Huh, M.D., Ph.D,is newly appointed to ... Dr.,Huh will step down as Nektar,s Chief Operating Officer ... new leadership role as,President and Chief Executive Officer at ...
... CuraGen Corporation,(Nasdaq: CRGN ) announced today that Timothy ... at the BIO CEO & Investor Conference,on Wednesday, February ... Access to a live webcast of the presentation will ... webcast will be accessible,beginning one hour after the presentation ...
Cached Biology Technology:Ohio Pioneers the Creation of a New 21st Century Industry 2Ohio Pioneers the Creation of a New 21st Century Industry 3Nektar Appoints Hoyoung Huh, M.D., Ph.D., to Serve on the Company's Board of Directors 2