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Neurological Disorders Channel
Reported January 11, 2013

A Parkinson's Disease Spit Test!

 

(Ivanhoe Newswire) -- New research suggests that testing a portion of a person's saliva gland may be a way to diagnose Parkinson's disease.
 
"There is currently no diagnostic test for Parkinson's disease," said study author Charles Adler, MD, PhD, with the Mayo Clinic Arizona and a Fellow of the American Academy of Neurology. "We have previously shown in autopsies of Parkinson's patients that the abnormal proteins associated with Parkinson's are consistently found in the submandibular salivary glands, under the lower jaw, and this is the first study demonstrating the value of testing a portion of the saliva gland to diagnose a living person for Parkinson's disease. Making a diagnosis in living patients is a big step forward in our effort to understand and better treat patients."
 
The study involved 15 people, with an average age of 68, who had Parkinson's disease; for an average of 12 years. Theses participants had a fairly good response to the Parkinson's medication and did not have known salivary gland disorders. Biopsies were taken of two different salivary glands: the gland under the lower jaw and the minor salivary glands in the lower lip. The biopsied tissues were stained and reviewed for evidence of the abnormal Parkinson's protein.
 
Unfortunately, with four of the initial lower jaw biopsies there was not enough tissue to complete the tests. However, the abnormal Parkinson's protein was detected in nine of the other 11, or 82 percent, of the patients with enough tissue to study.
 
"While still under analysis, the rate of positive findings in the biopsies of the lower lip glands appears to be much lower than for the lower jaw gland. This study provides the first direct evidence for the use of lower jaw gland biopsies as a diagnostic test for living patients with Parkinson's disease," said Adler. "This finding may be of great use when needing tissue proof of Parkinson's disease, especially when considering performing invasive procedures such as deep brain stimulation surgery or gene therapy."
 
SOURCE: American Academy of Neurology, January, 2013
 

 

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