Researchers have labored for decades to understand blindness-inducing neurodegenerative diseases such as age-related macular degeneration (AMD) and retinitis pigmentosa (RP).It has been a painstaking scientific journey as AMD and RP each belong to a complex family of disorders, in which every disorder has many forms and each form is encoded with a distinct genetic recipe. Even AMD, a major cause of vision loss in people over 60, is actually a collection of more than 50 diseases.Now, a team of researchers at the University of Wisconsin-Madison has taken a small but crucial step forward in the ongoing fight against retinal degeneration. Working with fruit flies, the scientists have discovered that a mutation in a common gene called calnexin can derail the light-processing activity of cells and set in motion the gradual breakdown of vision. They report their findings today in the journal Neuron.
