The therapy is called transcranial magnetic stimulation, or TMS. Study findings were presented today (April 29, 2009) during the annual American Academy of Neurology scientific meeting in Seattle.
In a previous randomized controlled clinical study by Ohio State University Medical Center, TMS was used to treat patients who suffer from migraine with aura, a condition in which a variety of mostly visual sensations come before or accompany the pain of a migraine attack. The study showed that TMS treatment was superior to the placebo given to the control group. Patients were pain-free at follow-up intervals of 2, 24 and 48 hours.
In the new study, conducted in rats, UCSF researchers focused on understanding the mechanism of action of TMS therapy -- how the treatment interacted with the brain to produce the pain-free outcomes of patients in the previous study.
The UCSF research identified potential opportunities to enhance treatment strategies in patients. One example, the study team noted, was that factors such as time and peak intensity of stimulation may be important components in the brain's response to TMS.
"The data demonstrate a biological rationale for the use of TMS to treat migraine aura," said Peter Goadsby, MD, PhD, lead investigator of the study, professor and director of the UCSF Headache Center. "We found that cortical spreading depression, known as CSD and the animal correlate of migraine aura, was susceptible to TMS therapy, with the wave of neuronal excitation blocked on over 50 percent of occasions."
The study findings showed that migraine aura responds to magnetic stimulation because TMS therapy blocks the wave of neuronal excitation, which is a biological system through which neurons become stimulated to fire. TMS creates a focused magnetic pulse that passes noninvasively through the skull, inducing an electric current to disrupt the abnormal brain waves believed to be associated with migraine, including CSD. CSD in humans precedes migraine with aura.
The American Academy of Neurology estimates that over 30 million Americans suffer from migraine, a syndrome characterized by recurrent, often excruciating headaches. The National Headache Foundation estimates that migraine causes 157 million lost workdays each year due to pain and associated migraine symptoms, resulting in a $13 billion burden to American employers.
Further research is needed, the UCSF team said, but the findings give neurologists a potential new treatment option for migraine sufferers unable to tolerate medication, which can cause stomach bleeding and other painful side effects.
Additional study investigators were Philip R. Holland, PhD, UCSF; Carol T. Schembri and Joe P. Fredrick, Neuralieve, Sunnyvale, Calif.
The research was funded by Neuralieve, Inc., of Sunnyvale, Calif., which provided the TMS technology for the study. Goadsby has served as an advisor to Neuralieve for which he received an honorarium.
UCSF is a leading university dedicated to promoting health worldwide through advanced biomedical research, graduate-level education in the life sciences and health professions, and excellence in patient care. For further information, visit www.ucsf.edu.
Nerve stimulation therapy alleviates pain for chronic headache http://news.ucsf.edu/releases/nerve-stimulation-therapy-alleviates-pain-for-chronic-headache/
UCSF Headache Center http://www.neurology.ucsf.edu/Brain/Headache.html
University of California, San Francisco www.ucsf.edu
Lauren Hammit | EurekAlert!
Multi-year study finds 'hotspots' of ammonia over world's major agricultural areas
17.03.2017 | University of Maryland
Diabetes Drug May Improve Bone Fat-induced Defects of Fracture Healing
17.03.2017 | Deutsches Institut für Ernährungsforschung Potsdam-Rehbrücke
The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
28.03.2017 | Life Sciences
28.03.2017 | Information Technology
28.03.2017 | Physics and Astronomy