An imbalance between excitatory and inhibitory neurotransmitters in amyotrophic lateral sclerosis revealed by use of 3-T proton magnetic resonance spectroscopy.

An imbalance between excitatory and inhibitory neurotransmitters in amyotrophic lateral sclerosis revealed by use of 3-T proton magnetic resonance spectroscopy.
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DOI:
10.1001/jamaneurol.2013.234
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发表时间:
2013-08
期刊:
影响因子:
29
通讯作者:
Feldman, Eva L.
Feldman, Eva L.
中科院分区:
医学1区
文献类型:
--
作者:
Foerster, Bradley R.;Pomper, Martin G.;Callaghan, Brian C.;Petrou, Myria;Edden, Richard A. E.;Mohamed, Mona A.;Welsh, Robert C.;Carlos, Ruth C.;Barker, Peter B.;Feldman, Eva L.

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To determine whether there are reductions in γ-aminobutyric acid (GABA) and elevations of glutamate + glutamine (Glx) levels in different brain regions of patients with amyotrophic lateral sclerosis (ALS) using proton magnetic resonance spectroscopy (1H-MRS). 3T short echo time and GABA-edited 1H-MRS centered on the left motor cortex and left subcortical white matter. Short echo time 1H-MRS was also performed centered on the pons. Data were analyzed using logistic regression, t-tests, and Pearson correlations. Post hoc analyses were performed to investigate differences between riluzole-naïve and riluzole-treated ALS patients. Twenty-nine ALS patients and thirty age- and gender-matched healthy controls (HCs). ALS patients had significantly lower levels of GABA in the motor cortex compared to HCs (P<.01). ALS patients also had significantly lower levels of N-acetylaspartate in the motor cortex (P<.01), subcortical white matter (P<.05), and pons (P<.01) and higher levels of myo-inositol in the motor cortex (P<.001) and subcortical white matter (P<.01) compared to HCs. Compared to riluzole-treated ALS patients, riluzole-naïve ALS patients had higher levels of Glx in the motor cortex (P<.05) and pons (P<.01), higher levels of creatine in the motor cortex (P<.001) and subcortical white matter (P=.05), and higher levels of N-acetylaspartate in the motor cortex (P<.01). There are reduced levels of GABA in the motor cortex of ALS patients. There are elevations of Glx in riluzole-naïve ALS patients compared to ALS riluzole-treated patients. These results point to an imbalance between excitatory and inhibitory neurotransmission, contributing to the pathogenesis of ALS.
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