“These results are exciting because depression is common in Parkinson’s but we weren’t sure about the best way to treat it. Older antidepressants are effective but have a lot of side effects.
The newer antidepressants have fewer side effects but we didn’t know if they’d be effective in people with Parkinson’s. We were also worried that they might worsen the motor problems that come with the disease,” said research author Irene H. Richard, MD, of the University of Rochester Medical Center in New York and a member of the American Academy of Neurology.
Parkinson's disease is a chronic neurologic disorder that worsens over time, leaving patients less able to direct or control their movements due to the loss of cells in various parts of the brain. In addition to the physical problems, Parkinson’s can also cause psychological symptoms. Almost one-half of people with Parkinson’s suffer from depression, and it is a major cause of disability.
The drugs tested were paroxetine, which is an antidepressant in the class called selective serotonin reuptake inhibitors (SSRIs), and venlafaxine extended release, which is in the serotonin and norepinephrine reuptake inhibitors (SNRIs) class.
The clinical trial lasted three months and involved 115 people in various stages of Parkinson’s disease who met the criteria for depression. About one-third of the participants received paroxetine, one-third received venlafaxine and one-third received a dummy pill. The dosage of the drug could be increased until the participant’s depression was effectively treated.On average, the people receiving paroxetine had a 13 point (59 percent) improvement and those receiving venlafaxine had an 11 point (52 percent) improvement in their scores on the Hamilton Rating Scale for Depression. People who received the dummy pill had a 6.8 point (32 percent) improvement. The results, as measured by three other depression rating scales, were similar. “The study suggests that, while there is a clear ‘placebo’ effect, there is a greater benefit from the antidepressant medications,” said Richard.
The study was supported by the National Institutes of Health/National Institute of Neurological Disorders and Stroke and Johns Hopkins University School of Medicine. Wyeth Pharmaceuticals provided venlafaxine XR, while Glaxo-Smith Kline provided paroxetine.
The American Academy of Neurology, an association of 25,000 neurologists and neuroscience professionals, is dedicated to promoting the highest quality patient-centered neurologic care. A neurologist is a doctor with specialized training in diagnosing, treating and managing disorders of the brain and nervous system such as stroke, Alzheimer’s disease, epilepsy, Parkinson’s disease and multiple sclerosis.
For more information about the American Academy of Neurology, visit http://www.aan.com
Rachel L. Seroka | American Academy of Neurology
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University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
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Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
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10.10.2017 | Event News
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