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Home / Health News / Found : Treatment for blindness causing syndrome

Found : Treatment for blindness causing syndrome

According to a study published in the journal -- Experimental Eye Research, new finding offers a promising way to develop gene and cell therapies that could treat the blindness condition in people.

By: ANI   | | Published: October 27, 2019 8:24 am
Tags: Blindness  vision blindness  
Optic nerve stimulation - visual aid - vision loss - stimulation and vision - how optic nerve stimulation can impact vision
Blindness affects an estimated 39 million people in the world. © Shutterstock

Researchers have found a promising way to develop gene and cell therapies, capable of treating blindness-causing syndrome. Also Read - Monitoring glaucoma at home may be a possibility soon

A genetic mutation that leads to a rare, but devastating blindness-causing syndrome has been discovered in monkeys for the first time. The finding offers a promising way to develop gene and cell therapies that could treat the condition in people. Also Read - New AI test can diagnose glaucoma at an early stage: Things you need to know about this eye disease



Three species of monkeys (rhesus macaques) with a mutated gene that’s associated with Bardet-Biedl Syndrome have been discovered, according to a study published in the journal — Experimental Eye Research. Also Read - Inculcate healthy habits to prevent vision impairment

It is the first known naturally occurring nonhuman primate model of the syndrome, which is also called BBS.

BBS leads to vision loss, kidney disfunction, extra fingers or toes, and other symptoms. It occurs in 1 of 140,000 to 160,000 North American births.

“There is no cure for Bardet-Biedel Syndrome today, but having a naturally occurring animal model for the condition could help us find one in the future,” said the paper’s corresponding author, Martha Neuringer, Ph.D., a professor of neuroscience at the Oregon National Primate Research Center at Oregon Health & Science University,

He is also a research associate professor of ophthalmology in the OHSU School of Medicine and OHSU Casey Eye Institute.

The discovery is timely, as gene therapy is already becoming a reality for some with retinal diseases.

In the 1990s, researchers discovered dogs that had a gene mutation linked to a congenital blindness-causing condition called Leber’s congenital amaurosis.

That animal model played a key role in helping researchers develop what became the first FDA-approved gene therapy for an inherited disease in December 2018. Neuringer’s group also hopes to develop a similar therapy for BBS.

After Neuringer and colleagues discovered two related monkeys without cells that are key to vision, OHSU nonhuman primate genetics experts Betsy Ferguson, Ph.D., and Samuel Peterson, Ph.D., examined the animals’ genomes. They quickly found both monkeys had a mutation of the BBS7 gene, one of at least 14 genes associated with BBS.

Because Ferguson leads an effort to genetically sequence 2,000 rhesus macaques at the nonhuman primate research centre, they were also able to search the genomes of numerous other monkeys there.

As a result, the team found a third monkey with the same mutation. The third rhesus macaque already had serious vision loss when it was identified in 2018 at age three and a half, although it adapted so well among its social group that the vision loss wasn’t obvious.

Neuringer’s team is observing the third monkey over time to better understand how the disease progresses in rhesus macaques.

Published : October 27, 2019 8:24 am
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