Alzheimer’s Skin Test

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Early onset Alzheimer’s is a real concern to people with a family history of the debilitating disease. Traditional ways to test for Alzheimer’s include a number of tests, each with a long wait for results. Physical and diagnostic exams, neurological tests or blood work take time and add anxiety to an already tense situation.  Now, a simple skin test could detect the likelihood of a person getting Alzheimer’s.

The American Academy of Neurology spearheaded a small study which revealed that certain skin biopsies can detect elevated levels of the abnormal protein found in both Alzheimer’s and Parkinson’s disease, another neurodegenerative disease. Alzheimer’s and Parkinson’s disease patients had seven times more of the protein tau than in those with non-Alzheimer’s dementia. Additionally, individuals with Parkinson’s disease had eight times more of the protein alpha-synuclein than non-affected individuals.

The study, conducted by the University of San Louis Potosi in Mexico, showed that the same skin protein present in brain tissue is present on the skin, making it an easier and more expedient way to test for Alzheimer’s. Before now, doctors could only detect Alzheimer’s or Parkinson’s once the disease advanced in the body. Early detection for Alzheimer’s can mean individuals get care sooner, possibly delaying the effects of the disease for as long as possible. A new Alzheimer’s drug called T-18-MA is the first new drug in 12 years. It slows the progression of Alzheimer’s.

Peanut Butter Sniff Test

Before the advent of the Alzheimer’s skin test, doctors would put patients through a battery of tests to see if they had the chance of developing Alzheimer’s. In a physical and diagnostic exam, patients reveal their health history, including any family history of neurodegenerative diseases, including Alzheimer’s. During a neurological test, doctors test reflexes, speech and coordination. This can also reveal whether a patient has another neurodegenerative disease that may mimic Alzheimer’s, such as Parkinson’s disease. Mental status tests are broken down into two sub-categories: a mini-mental state exam and mini-cog test. The mini-mental state exam tests a patient’s response to questions that test their mental state. In a mini-cog test, a patient is asked to complete two tasks. In addition, the doctor assesses the patient’s mental state for signs of depression or other mood disorders that may be mistaken for Alzheimer’s.

Brain scan tests are the standard way to test for Alzheimer’s. It checks the level of amyloid-beta in the brain, a precursor to Alzheimer’s. More recently, a non-standard way to detect Alzheimer’s is the peanut butter sniff test. If patients cannot smell the peanut butter, they likely will develop Alzheimer’s. In genetic testing, doctors screen for APO-Ee4, the strongest risk factor for Alzheimer’s disease. Genetic testing can detect “familial Alzheimer’s,” a rare form of the disease found in only five percent of cases.

What does a person do when diagnosed with early onset Alzheimer’s in their late 30s?  Daisy Duarte, 39, cares for her mother, 65, who also has Alzheimer’s. In fact, 75 percent of the women in her family have had Alzheimer’s, which meant that Daisy had a 50/50 chance of having the gene. Once a blood test told her that she was positive for the gene, Daisy opted to join the Dominantly Inherited Alzheimer’s Network, a part of an observational study through Washington University’s School of Medicine. She can now be a part of the cure for Alzheimer’s.

By Danielle Branch

USA Today
Huffington Post

Photo Courtesy of Adley Haywood – Flickr License
Photo Courtesy of Mando Gomez – Flickr License