Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Research represents major breakthrough in macular degeneration

27.04.2012
University of Kentucky researchers, led by Dr. Jayakrishna Ambati, have made a major breakthrough in the "dry" form of age-related macular degeneration known as geographic atrophy (GA).

GA is an untreatable condition that causes blindness in millions of individuals due to death of retinal pigmented epithelial cells. The paper, "DICER1 loss and Alu RNA Induce Age-Related Macular Degeneration via the NLRP3 Inflammasome and MyD88," was published in the April 26 online edition of the premier journal Cell.

Ambati, professor of physiology, and professor and vice chair of ophthalmology and visual sciences at UK, is a leader in the field of macular degeneration research. Previous research from the Ambati laboratory published in the journal Nature showed that in human eyes with geographic atrophy there is a deficiency of the enzyme DICER1, leading to accumulation of toxic Alu RNA molecules in the retinal pigmented epithelium. The Cell paper shows that when these RNAs build up in the eye they trigger activation of an immune complex known as the NLRP3 inflammasome. In turn, this leads to the production of a molecule known as IL-18, which causes death of retinal pigmented epithelial cells and vision loss by activating a critical protein known as MyD88.

Importantly, Ambati and colleagues found evidence that activity of the inflammasome, IL-18, and MyD88 were all increased in human eyes with GA. They then showed that blocking any of these components could prevent retinal degeneration in multiple disease models. The researchers are excited that blocking these pathways could herald a new potential therapy for GA, for which there is no approved treatment.

Ambati is working with iVeena Pharmaceuticals, Inc. of Salt Lake City to commercialize therapies for geographic atrophy. iVeena can be contacted at info@i-veena.com.

Authors on the paper include Ambati as well as Valeria Tarallo, Yoshio Hirano, Bradley D. Gelfand, Sami Dridi, Nagaraj Kerur, Younghee Kim, Won Gil Cho, Hiroki Kaneko, Benjamin J. Fowler, Sasha Bogdonaovich, Romulo J.C. Albuquerque, Judi Z. Baffi and Mark E. Kleinman, all of the UK Department of Opthalmology and Visual Science. Additional authors include: William W. Hauswirth and Vince A. Chiodo of the University of Florida; Jennifer F. Kugel, James A. Goodrich and Steven L. Ponicsan of the University of Colorado; Gautaum Chaudhuri of Meharry Medical College; Michael P. Murphy of the MRC Mitochondrial biology Unit; Joshua L. Dunaief of the University of Pennsylvania; Balamurali K. Ambati of the University of Utah and the Veterans Affairs Salt Lake City Healthcare System; Yuichiro Ogura of the Nagoya City University Graduate School of Medical Sciences, Japan; Jae Wook Yoo and Dong-ki Lee of Sungkyunkwan University, Korea; Patrick Provost of Université Laval, Quebec; David R. Hinton of the University of Southern California; and Gabriel Nunez of the University of Michigan Medical School.

Ambati is also the Dr. E. Vernon and Eloise C. Smith Endowed Chair in Macular Degeneration Research.

This research was supported by the National Eye Institute, the Doris Duke Charitable Foundation, the Burroughs Wellcome Fund, and Research to Prevent Blindness.

Allison Elliott | EurekAlert!
Further information:
http://www.uky.edu

More articles from Health and Medicine:

nachricht Biofilm discovery suggests new way to prevent dangerous infections
23.05.2017 | University of Texas at Austin

nachricht Another reason to exercise: Burning bone fat -- a key to better bone health
19.05.2017 | University of North Carolina Health Care

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

Im Focus: Bacteria harness the lotus effect to protect themselves

Biofilms: Researchers find the causes of water-repelling properties

Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

Innovation 4.0: Shaping a humane fourth industrial revolution

17.05.2017 | Event News

 
Latest News

Scientists propose synestia, a new type of planetary object

23.05.2017 | Physics and Astronomy

Zap! Graphene is bad news for bacteria

23.05.2017 | Life Sciences

Medical gamma-ray camera is now palm-sized

23.05.2017 | Medical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>