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Pitt Researchers Aim to Make Whole-Eye Transplantation a Reality
  • USA - English


News provided by

UPMC

Oct 07, 2014, 11:35 ET

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Pitt researchers aim to make whole-eye transplantation a reality. Photo credit: Randall Mackenzie Illustrations
Pitt researchers aim to make whole-eye transplantation a reality. Photo credit: Randall Mackenzie Illustrations

Pittsburgh, Pennsylvania (PRWEB) October 07, 2014 -- University of Pittsburgh School of Medicine researchers have been awarded $1.25 million from the U.S. Department of Defense (DOD) to fund two projects that aim to establish the groundwork for the nation’s first whole-eye transplantation program.

Recent advances in our understanding of retinal ganglion cell survival and successes with optic nerve regeneration in experimental studies strengthen our hope that whole-eye transplantation is an audacious yet achievable goal

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Offered through the DOD’s Vision Research Program, the grants support conceptually innovative research that ultimately could lead to critical discoveries or major advancements. The Pitt researchers will lead a multidisciplinary consortium that includes clinicians and scientists from Harvard University and the University of California, San Diego.

Although corneal transplants are routinely performed today, whole-eye transplantation has remained an unrealized goal in vision restoration because of challenges related to immune rejection and reestablishing the connectivity of the optic nerve to the visual centers in the brain.

The Audacious Restorative Goals in Ocular Sciences (ARGOS) Consortium established at Pitt will be the first cross-disciplinary, systematic attempt to explore strategies to enable corneal regeneration, retinal cell survival, long-distance optic nerve regeneration with cortical integration and whole-eyeball transplantation.

“Recent advances in our understanding of retinal ganglion cell survival and successes with optic nerve regeneration in experimental studies strengthen our hope that whole-eye transplantation is an audacious yet achievable goal,” said principal investigator Vijay Gorantla, M.D., Ph.D., associate professor of surgery in the Department of Plastic Surgery at the University of Pittsburgh, and the administrative medical director of the Pittsburgh Reconstructive Transplant Program at UPMC. “Our experience with transplanting complex immunogenic tissues, such as the hand, will help us optimize treatments for rejection in eye transplants.”

According to the DOD, blast injuries are the most common for soldiers wounded in action, with up to 40 percent of blast injuries affecting the eyes. Approaches to minimize worsening of injury to the eye after trauma, preserve and protect residual retinal and optic nerve function, and restore vision are all goals that will be investigated.

“This is an aggressive program with very high-risk and high-reward scenarios. We’re excited to be leading the project and honored to be collaborating with global leaders in optic nerve regeneration,” said co-principal investigator Joel Schuman, M.D., chair of the Department of Ophthalmology, Pitt School of Medicine, and director of the UPMC Eye Center. “By solving one facet of the problem at a time, the long dreamed-of goal of whole-eye transplantation may be possible with the promise of a better life for millions of patients worldwide.”

Sub-awardees of the current award include Jeffrey Goldberg, M.D., of the University of California, San Diego; and Larry Benowitz, Ph.D., of Harvard University.

In a related project led by principal investigator Kia Washington, M.D., assistant professor of plastic surgery, University of Pittsburgh School of Medicine, the research team will focus on establishing baseline viability and structural integrity in an animal model of whole-eye transplantation. The researchers will examine immune rejection and evaluate the usage of extracellular matrix therapy for improvement of optic nerve function after whole-eye transplantation.

“We have successfully performed an eye transplant in a small animal model,” said Dr. Washington. “This ongoing project may eventually lead to restoration of vision after trauma or degenerative disease.”

The Louis J. Fox Center for Vision Restoration will provide additional key funding for the whole-eye transplantation effort.

# # #
About the University of Pittsburgh School of Medicine

As one of the nation’s leading academic centers for biomedical research, the University of Pittsburgh School of Medicine integrates advanced technology with basic science across a broad range of disciplines in a continuous quest to harness the power of new knowledge and improve the human condition. Driven mainly by the School of Medicine and its affiliates, Pitt has ranked among the top 10 recipients of funding from the National Institutes of Health since 1998. In rankings recently released by the National Science Foundation, Pitt ranked fifth among all American universities in total federal science and engineering research and development support.

Likewise, the School of Medicine is equally committed to advancing the quality and strength of its medical and graduate education programs, for which it is recognized as an innovative leader, and to training highly skilled, compassionate clinicians and creative scientists well-equipped to engage in world-class research. The School of Medicine is the academic partner of UPMC, which has collaborated with the University to raise the standard of medical excellence in Pittsburgh and to position health care as a driving force behind the region’s economy. For more information about the School of Medicine, see http://www.medschool.pitt.edu.

Richard Pietzak, UPMC, http://www.upmc.com/media, +1 (412) 864-4151, [email protected]

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