Navigation Links
Genetic Cause For Farsightedness Discovered

Researchers from Johns Hopkins had discovered the gene expression responsible for extreme farsightedness in people.

The researchers report that nanophthalmos, or "dwarf eye," a rare, potentially blinding disorder, is caused // by an alteration in a gene called MFRP that helps control eye growth and regulates the organ's shape and focus. The study is described in the July issue of the journal Proceedings of the National Academy of Sciences.

As the child grows and gains more visual experience, the eye adjusts its focus by growing, which changes the distance between the lens and the retina, the light-detecting layer of cells at the back of the eye. Due to natural genetic mutations, some eyes stop growing too soon, causing farsightedness.

In the case of nanophthalmos, a mutation in MFRP completely wipes out the function of the protein coded for by the gene. In people with this condition, the retina is too close to the lens, but the lens and cornea, the eye's outermost layer, are of normal size and shape. Eyes with nanophthalmos still work quite well, despite these complications. But the disease's secondary complications later in life, including glaucoma or detached retina, are far more severe and can lead to complete blindness.

One such patient with nanophthalmos, an Amish-Mennonite woman who was blind in one eye, came to the Wilmer Eye Institute in 1998 for treatment. By reconstructing the woman's family tree, the researchers discovered that several living relatives also suffered from nanophthalmos, and four deceased relatives had been part of the classic Johns Hopkins Bloomberg School of Public Health study in the 1970s that helped define the disease as genetic.

In the study, the researchers examined the woman's DNA for possible gene mutations causing nanophthalmos. The research team successfully mapped the MFRP gene mutation in humans and discovered that the protein was completely missing from nanophthalmos pa tients. In a normal human eye, the MFRP protein is located on the surface of the retinal pigment epithelium (RPE), which is located beneath the retina and helps maintain photoreceptors, the eye's light-detecting cells. Blindness occurs when these cells die after detachment of the retina from the RPE.

Researchers hope the information gained from his study will open doors to correcting other types of severe refractive error, not only farsightedness, but also nearsightedness.

Source: Newswise
'"/>




Related medicine news :

1. Genetic Dentistry: Your Dentist may be able to grow you a new set of Teeth.
2. Genetic influence in menopause
3. Genetics and cholesterol levels
4. Genetics helps in attacking cancer
5. Genetic disorder related with sleep patterns
6. Genetic innovation
7. Genetic tests for cancer
8. Genetic indicates memory
9. Genetic mutation to the fountain of youth discovered
10. Genetic differences found between Male and Female brains
11. Alcoholism Influenced By Both Genetics & Family Environment
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/26/2016)... Birmingham, Lake Orion, Clarkston, Michigan (PRWEB) , ... ... ... their direction with respect to fertility once they have been diagnosed with endometriosis. ... for tolerable intercourse but they also require a comprehensive approach that can help ...
(Date:6/25/2016)... , ... June 25, 2016 , ... First Choice ... States, named Dr. Sesan Ogunleye, as the Medical Director of its new Mesquite-Samuell Farm ... Medical Director of our new Mesquite location,” said Dr. James M. Muzzarelli, Executive Medical ...
(Date:6/24/2016)... ... 2016 , ... A recent article published June 14 on E ... goes on to state that individuals are now more comfortable seeking to undergo not ... as calf and cheek reduction. The Los Angeles area medical group, Beverly Hills Physicians ...
(Date:6/24/2016)... ... June 24, 2016 , ... Global law firm Greenberg Traurig, P.A. announced ... attorneys chosen by their peers for this recognition are considered among the top 2 ... received special honors as members of this year’s Legal Elite Hall of Fame: ...
(Date:6/24/2016)... ... 24, 2016 , ... EB Medicine presented its first-ever “Issue ... conference in Ponte Vedra Beach, FL. The awards honor the outstanding work of ... and Pediatric Emergency Medicine Practice. , “With this award, we recognize the ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , June 24, 2016 Dehaier Medical Systems ... "Company"), which develops, markets and sells medical devices and ... , signed a strategic cooperation agreement with Hongyuan Supply ... Supply Chain") on June 20, 2016, to develop Dehaier,s ... strategic cooperation agreement, Dehaier will leverage Hongyuan Supply Chain,s ...
(Date:6/24/2016)... Research and Markets has announced the addition of the ... to their offering. ... World Market for Companion Diagnostics covers the world market for ... report includes the following: , World IVD ... (N. America, EU, ROW), 2015-2020 , World IVD Companion ...
(Date:6/24/2016)... 24, 2016   Pulmatrix, Inc ., (NASDAQ: ... inhaled drugs, announced today that it was added to ... its comprehensive set of U.S. and global equity ... an important milestone for Pulmatrix," said Chief Executive Officer ... of our progress in developing drugs for crucial unmet ...
Breaking Medicine Technology: