Retinitis Pigmentosa News and Research

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Retinitis pigmentosa (RP) is the name given to a group of inherited eye diseases that affect the retina (the light-sensitive part of the eye). RP causes the breakdown of photoreceptor cells (cells in the retina that detect light). Photoreceptor cells capture and process light helping us to see. As these cells breakdown and die, patients experience progressive vision loss. The most common feature of all forms of RP is a gradual breakdown of rods (retinal cells that detect dim light) and cones (retinal cells that detect light and color). Most forms of RP first cause the breakdown of rod cells. These forms of RP, sometimes called rod-cone dystrophy, usually begin with night blindness. Night blindness is somewhat like the experience normally sighted individuals encounter when entering a dark movie theatre on a bright, sunny day. However, patients with RP cannot adjust well to dark and dimly lit environments.

Retinal prosthesis restores partial vision to people who are totally blind

Two experimental treatments, a retinal prosthesis and fetal tissue transplant, restored some vision to people with blinding eye diseases. The findings, presented at Neuroscience 2009, the annual meeting of the Society for Neuroscience and the world's largest source of emerging news on brain science and health, may lead to new treatments for the blind. Researchers also reported that an engineered protein restored vision in an animal model and identified ways to improve stem cell treatments.

21 Oct 2009

Human neural stem cells protect cone photoreceptors: StemCells preclinical data

StemCells, Inc. announced today new preclinical data showing that its human neural stem cells protect cone photoreceptors (cones) in the eye from progressive degeneration and preserve visual function long term.

20 Oct 2009

Mimetogen Pharmaceuticals completes its equity financing

Mimetogen Pharmaceuticals Inc. ("Mimetogen"), a privately held drug development company announced today that it has successfully completed an equity financing, co-led by Boston-based VIMAC Milestone Medica Fund and Montréal-based iNovia Capital.

8 Oct 2009

Research to explore diagnosis and treatment of rare diseases

The National Institutes of Health announced today a second phase of the Rare Diseases Clinical Research Network (RDCRN) including funds for 19 research consortia.

7 Oct 2009

Electrically stimulating nerve cells can restore some vision

Results: MIT engineers have designed a retinal implant for people who have lost their vision from retinitis pigmentosa or age-related macular degeneration, two of the leading causes of blindness. The retinal prosthesis would help restore some vision by electrically stimulating the nerve cells that normally carry visual input from the retina to the brain.

24 Sep 2009

Artificial vision enhancers to reach the market by 2011

Visually impaired or blind patients with degenerative retina conditions would be very happy if they were able to regain mobility, find their way around, be able to lead an independent life and to recognize faces and read again. These wishes were documented by a survey conducted by a research team ten years ago to find out what patients' expectations of electronic retina prostheses (retina implants) were.

19 Sep 2009

Subject enrollment in patients with retinitis pigmentosa for Phase 2 clinical study completed by R-Tech Ueno

We are pleased to announce that subject enrollment for the phase 2 clinical study of 0.15% UF-021 (generic name; isopropyl unoprostone; active ingredient of Rescula(R) eye-drops) in patients with retinitis pigmentosa has been completed.

25 Aug 2009

Scientists cultivate multiple types of retina cells from human stem cells

A team of scientists from the University of Wisconsin-Madison School of Medicine and Public Health has successfully grown multiple types of retina cells from two types of stem cells — suggesting a future in which damaged retinas could be repaired by cells grown from the patient's own skin.

25 Aug 2009

Gene therapy for retinitis pigmentosa

An international team of scientists and clinicians from the United States and Saudi Arabia are working to develop gene therapy for treating a rare, hereditary retinal disease.

31 Jul 2009

Saffron could stop blindness and cure eye disease

Italian scientists say they have found that saffron may hold the key to stopping vision loss as people age and in treating some eye diseases.

17 May 2009

Fish oil protects against neurodegenerative diseases

Dr. Nicolas Bazan, Director of the Neuroscience Center of Excellence, Boyd Professor, and Ernest C. and Yvette C. Villere Chair of Retinal Degenerative Diseases Research at LSU Health Sciences Center New Orleans, will present new research findings showing that an omega three fatty acid in the diet protects brain cells by preventing the misfolding of a protein resulting from a gene mutation in neurodegenerative diseases like Parkinson's and Huntington's.

20 Apr 2009

Columbia University licenses retinal imaging technology to PCAsso Diagnostics

Columbia University Science and Technology Ventures announced that it has signed a worldwide exclusive license agreement with PCAsso Diagnostics, LLC to develop and market a novel imaging technology for diagnosis of vascular leakage disorders of the retina.

13 Apr 2009

Discovery of new gene that causes Leber congenital amaurosis and retinitis pigmentosa

The team of Dr. Robert Koenekoop which includes Dr. Irma Lopez from the Research Institute of the MUHC at the Montreal Children's Hospital played a crucial role in the international collaboration that led to the discovery of a new gene that causes Leber congenital amaurosis (LCA) and retinitis pigmentosa (RP), two devastating forms of childhood blindness.

5 Mar 2009

Genetic link between cats and humans for retinitis pigmentosa

About one in 3,500 people are affected with retinitis pigmentosa (RP), a disease of the retina's visual cells that eventually leads to blindness.

4 Mar 2009

New understanding of blinding degenerative eye conditions

Though based on mouse studies, the research bolsters the idea that humans suffering from these and other eye conditions may be able to help preserve function by adding antioxidants to their diet, and explains why this would work.

8 Feb 2009

Study links cone death in retinitis pigmentosa to metabolic problem

Rods and cones coexist peacefully in healthy retinas. Both types of cells occupy the same layer of tissue and send signals when they detect light, which is the first step in vision.

8 Dec 2008

Gene find sheds light on motor neuron diseases like amyotrophic lateral sclerosis

Scientists have identified a gene in mice that plays a central role in the proper development of one of the nerve cells that goes bad in amyotrophic lateral sclerosis, or Lou Gehrig's disease, and some other diseases that affect our motor neurons.

22 Oct 2008

Retina transplants show promise in patients with retinal degeneration

Preliminary research shows encouraging results with transplantation of retinal cells in patients with blindness caused by retinitis pigmentosa (RP) and age-related macular degeneration (AMD), according to a report in the August issue of American Journal of Ophthalmology.

10 Jul 2008

New approach to treating vision loss caused by type 1 Usher syndrome

A new approach to treating vision loss caused by type 1 Usher syndrome (USH1), the most common condition affecting both sight and hearing, will be unveiled by a scientist at the annual conference of the European Society of Human Genetics tomorrow (Tuesday 3 June).

2 Jun 2008

Wireless vision implant

About 30 million people around the world have grown legally blind due to retinal diseases. The EPI-RET project has sought for a technical solution for the past twelve years to help these patients. This work has resulted in a unique system - afully implantable visual prosthesis.

29 May 2008