Maureen Newman,  —

Although the basis of Friedreich’s ataxia lies in a genome-wide mutation in the frataxin gene that encodes the frataxin protein, not all tissues are affected by the disease. Some tissues function adequately, while others such as neuronal and cardiac tissues suffer from degenerated ability to function. Researchers have found that…

A screen of molecules known as short-hairpin-loop-RNA (shRNA) revealed that certain features of Friedreich’s ataxia can be relieved through two specific shRNA sequences. In the laboratory of Dr. Robert B. Wilson at University of Pennsylvania School of Medicine, researchers conducted a study that exposed cells isolated from Friedreich’s ataxia patients…

Often times, researchers focus on cells from the brain or the heart when studying Friedreich’s ataxia. A new study from Brunel University London and University of Cambridge in the United Kingdom chose instead to focus on blood leukocytes and skin fibroblasts from patients with Friedreich’s ataxia. The reasoning was based…

A remarkable new tool in the world of genetic biology is being applied to study Friedreich’s ataxia. TALEN and CRISPR methodologies, which have been the subjects of recent patent battles, are powerful gene modifying techniques that can easily add or remove sequences to mimic the mutations…

Maintaining iron balance in the mitochondria is of great importance to cell health and is a prominent area of study to understand Friedreich’s ataxia. Frataxin protein deficiency in Friedreich’s ataxia leads to accumulation of iron in the mitochondria, leading to extensive reactive oxygen species (ROS) damage and cell death. A group…

Patients with Friedreich’s ataxia are at a high risk for developing hypertrophic cardiomyopathy, where the walls of the heart become thicker than normal. Little is known about hypertrophic cardiomyopathy disease progression in Friedreich’s ataxia patients, although the condition can be severely life-limiting. To address this lack…

Rating scales used to succinctly describe the severity of Friedreich’s ataxia and the impact on patients’ quality of life have a tradeoff between being comprehensive enough to adequately describe patient symptoms and overly detailed and complicated. A new study published in Journal of the Neurological Sciences…

Patients with Friedreich’s ataxia have genetic mutations that lead to frataxin protein deficiency, but when their cells are treated in vitro with a class of molecules called Src inhibitors, frataxin protein accumulates. This finding was the result of a series of experiments described in the article, “…

A long string of DNA repeats are the molecular basis for Friedreich’s ataxia. The beginning of the first intron of FXN, the gene encoding the protein frataxin, has an abnormally large number of GAA repeats in Friedreich’s ataxia patients compared to normal individuals. A large body of evidence shows that…

It is well known that a DNA mutation causes Friedreich’s ataxia by reducing the production of frataxin protein. Patients with Friedreich’s ataxia often have several hundred “GAA repeats” in their DNA, whereas unaffected individuals have no more than 40 GAA repeats. What is less known is how exactly GAA repeats…