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UCLA researchers identify new gene involved in Parkinson's disease
Date:6/4/2014

A team of UCLA researchers has identified a new gene involved in Parkinson's disease, a finding that may one day provide a target for a new drug to prevent and potentially even cure the debilitating neurological disorder.

Parkinson's disease is the second most common neurodegenerative disorder after Alzheimer's disease, and there is no cure for the progressive and devastating illness. About 60,000 Americans are diagnosed with Parkinson's disease each year. It is estimated that as many as 1 million Americans live with Parkinson's disease, which is more than the number of people diagnosed with multiple sclerosis, muscular dystrophy and Lou Gehrig's disease combined.

In Parkinson's disease, multiple neurons in the brain gradually break down or die. This leads to the movement impairments, such as tremor, rigidity, slowness in movement and difficulty walking, as well as depression, anxiety, sleeping difficulties and dementia, said Dr. Ming Guo, the study team leader, associate professor of neurology and pharmacology and a practicing neurologist at UCLA.

A handful of genes have been identified in inherited cases of Parkinson's disease. Guo's team was one of two groups worldwide that first reported in 2006 in the journal Nature that two of these genes, PTEN-induced putative kinase 1 (PINK1) and PARKIN, act together to maintain the health of mitochondria the power house of the cell that is important in maintaining brain health. Mutations in these genes lead to early-onset Parkinson's disease.

Guo's team has further shown that when PINK1 and PARKIN are operating correctly, they help maintain the regular shape of healthy mitochondria and promote elimination of damaged mitochondria. Accumulation of unhealthy or damaged mitochondria in neurons and muscles ultimately results in Parkinson's disease.

In this study, the team found that the new gene, called MUL1 (also known as MULAN and MAPL), plays an important role in mediati
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Contact: Kim Irwin
kirwin@mednet.ucla.edu
310-794-2262
University of California - Los Angeles Health Sciences
Source:Eurekalert  

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UCLA researchers identify new gene involved in Parkinson's disease
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