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Researchers Find Evidence That Aura May Trigger Pain.
2001 OCT 18 - (NewsRx.com & NewsRx.net) -- In migraine headaches preceded by auras, the aura itself likely triggers the pain, according to a study presented at the American Neurological Association's 126th annual meeting in Chicago.
"We establish, for the first time, a link between the aura, which is generated in the brain, and the pain of migraine, which is partially generated in membranes covering the brain," said lead author Hayrunnisa Bolay, MD, PhD, of Harvard University.
Migraine headaches are characterized by pulsing or throbbing pain in one area of the head and affect about 10% of the population, predominantly women. About one in five migraine sufferers can predict the recurrence of headache by an 'aura,' which typically involves visual changes, such as seeing lines, spots, or even hallucinations.
Auras have been convincingly tied to the brain phenomenon of cortical spreading depression (CSD), during which a wave of decreased brain cell activity crosses the cortex, the outermost part of the brain.
The pain of migraine, on the other hand, has been traced to inflammation and blood flow changes in the dura mater, a membrane that covers the brain, and specifically to stimulation of the trigeminal nerve pain system in this membrane.
Because the aura consistently precedes the pain of headache, many ...
- Audit of dura mater firm yields warning, recall. Was TRF a 'distributor'?...
- Newspaper article from: Inspection Monitor March 1, 2003 700+ words
...coupled with a voluntary recall of over 200 dura mater allografts were likely motivators for...or complete" procedures to ensure all dura mater allografts received from its outside...significance of residual endotoxins in dura mater allografts. The letter stated that the...
- Update: Creutzfeldt-Jakob Disease Associated with Cadaveric Dura Mater Grafts -...
- Magazine article from: MMWR. Morbidity and Mortality Weekly Report Nakamura, Y; Uehara, R; Watanabe, M; Sadakane, A; Yamada, M; Mizusawa, H; Maddox, R; Sejvar, J; Belay, E; Schonberger, L October 24, 2008 700+ words
...associated with receipt of cadaveric dura mater grafts (1). A single brand of dural...2). A case of CJD associated with a dura mater graft is defined as physician-diagnosed CJD in the recipient of a cadaveric dura mater graft whose disease was reviewed and...
- Update: Creutzfeldt-Jakob disease associated with cadaveric dura mater...
- Newspaper article from: Morbidity and Mortality Weekly Report Nakamura, Y Watanabe, M Nagoshi, K Kitamoto, T Sato, T Yamada, M Mizusawa, H Maddox, R Sejvar, J Belay, E Schonberger, LB December 5, 2003 700+ words
...associated with receipt of cadaveric dura mater grits (1). In all but one case, the...Japan had identified an additional 54 dura mater graft-associated cases. This report...MHW. During this period, 97 cadaveric dura mater graft-associated CJD cases were identified...
- Japanese Ministry of Health Bans Use of Human Dura Mater
- Press release article from: PR Newswire March 28, 1997 700+ words
...of Health is banning all uses of human dura mater, including the Company's Tutoplast(R) dura mater. Since Japan is a significant market...recommendation is that it has rejected dura mater genetically and failed to consider the...
- Creutzfeldt-Jakob disease associated with cadaveric dura mater grafts - Japan,...
- Newspaper article from: Morbidity and Mortality Weekly Report November 14, 1997 700+ words
...patients) who had received a cadaveric dura mater graft during a neurosurgical (42) or...least 41 of these patients had received dura mater grafts from the same processor, and...CJD in the most recent recipient of a dura mater graft. The findings indicate that an...
- Biodynamics International And Musculoskeletal Transplant Foundation Sign Dura...
- Press release article from: PR Newswire March 31, 1997 700+ words
...Edison, New Jersey, for the recovery of dura mater tissue. Under the terms of the agreement...organizations will commence the recovery of dura mater throughout the United States, following...of safe, high-quality bioimplants. Dura mater is a regulated medical device with 510...
- FDA regs on human dura mater inadequate".(Brief Article)
- Magazine article from: Medical Marketing & Media Dickinson, James G. October 1, 2001 700+ words
...FDA regulations on the use of cadaveric dura mater are inadequate to prevent the transmission...the FDA to ban the sale of human cadaveric dura mater and recall all unimplanted cadaveric dura mater from hospitals and any other channels of...
- dura mater
- Reference information from: The Mosby Medical Encyclopedia October 1, 1996 700+ words
...Mosby Medical Encyclopedia 10-01-1996 dura mater /d'rum'tur, dy'ru/, the fiber...surrounding the brain and spinal cord. The dura mater encephali covers the brain. The dura mater spinalis covers the cord. See also meninges...
