Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-39954
Gutzeit, A; Meier, D; Meier, M L; von Weymarn, C; Ettlin, D A; Graf, N; Froehlich, J M; Binkert, C A; Brügger, M (2011). Insula-specific responses induced by dental pain: a proton magnetic resonance spectroscopy study. European Radiology, 21(4):807-815.
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OBJECTIVES: To evaluate whether induced dental pain leads to quantitative changes in brain metabolites within the left insular cortex after stimulation of the right maxillary canine and to examine whether these metabolic changes and the subjective pain intensity perception correlate.
METHODS: Ten male volunteers were included in the pain group and compared with a control group of 10 other healthy volunteers. The pain group received a total of 87-92 electrically induced pain stimuli over 15 min to the right maxillary canine tooth. Contemporaneously, they evaluated the subjective pain intensity of every stimulus using an analogue scale. Neurotransmitter changes within the left insular cortex were evaluated by MR spectroscopy.
RESULTS: Significant metabolic changes in glutamine (+55.1%), glutamine/glutamate (+16.4%) and myo-inositol (-9.7%) were documented during pain stimulation. Furthermore, there was a significant negative correlation between the subjective pain intensity perception and the metabolic levels of Glx, Gln, glutamate and N-acetyl aspartate.
CONCLUSION: The insular cortex is a metabolically active region in the processing of acute dental pain. Induced dental pain leads to quantitative changes in brain metabolites within the left insular cortex resulting in significant alterations in metabolites. Negative correlation between subjective pain intensity rating and specific metabolites could be observed.
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|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||06 Faculty of Arts > Institute of Psychology
04 Faculty of Medicine > Center for Dental Medicine > Clinic for Masticatory Disorders and Complete Dentures, Geriatric and Special Care Dentistry
04 Faculty of Medicine > Institute of Biomedical Engineering
610 Medicine & health
|Deposited On:||21 Dec 2010 16:12|
|Last Modified:||27 Nov 2013 19:55|
|Additional Information:||The original publication is available at www.springerlink.com|
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