期刊
NEUROIMAGE
卷 54, 期 2, 页码 1315-1323出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.neuroimage.2010.09.039
关键词
H-1-MRS; Chronic low back pain; Absolute quantitation; Neurotransmitter; 3T
资金
- Friedrich-Schiller-University Jena
- Accident Prevention and Insurance Association for Food and Restaurants (Berufsgenossenschaft Nahrungsmittel und Gaststatten, BGN, Germany)
- KIP [1.1.29]
- Bernstein Group for Computational Neuroscience Jena (BMBF) [01GQ0703]
Reliable detection of metabolic changes in the brain in vivo induced by chronic low back pain may provide improved understanding of neurophysiological mechanisms underlying the manifestation of chronic pain. In the present study, absolute concentrations of N-acetyl-aspartate (NAA), creatine (Cr), total choline (tCho), myo-inositol (ml), glutamate (Glu) and glutamine (Gin) were measured in three different pain processing cortical regions (anterior insula, anterior cingulate cortex, and thalamus) of ten patients with non-specific chronic low back pain by means of proton MR spectroscopy (H-1-MRS) and compared to matched healthy controls. Significant decrease of Glu was observed in the anterior cingulate cortex of patients. Patients also revealed a trend of decreasing Gln concentrations in all investigated brain areas. Reductions of NAA were observed in the patient group in anterior insula and in anterior cingulated cortex, whereas ml was reduced in anterior cingulated cortex and in thalamus of patients. Reduced concentrations of Glu and Gln may indicate disordered glutamatergic neurotransmission due to prolonged pain perception, whereas decrease of NAA and ml may be ascribed to neuron and glial cell loss. No significant changes were found for Cr. The morphological evaluation of anatomic brain data revealed a significantly decreased WM volume of 17% (p<0.05) as well as a non significant trend for GM volume increase in the anterior insula of patients. (C) 2010 Elsevier Inc. All rights reserved.
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