Network modulation in the treatment of Parkinson's disease
Identifieur interne : 001149 ( Main/Exploration ); précédent : 001148; suivant : 001150Network modulation in the treatment of Parkinson's disease
Auteurs : Kotaro Asanuma [États-Unis] ; Chengke Tang [États-Unis] ; Yilong Ma [États-Unis] ; Vijay Dhawan [États-Unis] ; Paul Mattis [États-Unis] ; Christine Edwards [États-Unis] ; Michael G. Kaplitt [États-Unis] ; Andrew Feigin [États-Unis] ; David Eidelberg [États-Unis]Source :
- Brain [ 0006-8950 ] ; 2006-07-14.
Abstract
It has been proposed that deep brain stimulation (DBS) of the subthalamic nucleus (STN DBS) and dopaminergic therapy ameliorate the symptoms of Parkinson’s disease through similar functional mechanisms. We examined this notion using PET to compare the metabolic effects of these treatment approaches. Nine Parkinson’s disease patients (age 61.7 ± 11.1 years) were scanned ON and OFF STN stimulation and nine others (age 60.0 ± 9.3 years) were scanned ON and OFF an individual titrated intravenous levodopa infusion. The two treatment groups were matched for baseline disease severity as well as clinical response to therapy. Similarities and differences in the effects of treatment on regional metabolism were assessed using statistical parametric mapping (SPM). In addition, we used network analysis to assess the effect of therapy on the expression of an abnormal Parkinson's disease-related spatial covariance pattern (PDRP). We found that both STN DBS and levodopa therapy were associated with significant (P < 0.001) metabolic reductions in the putamen/globus pallidus, sensorimotor cortex and cerebellar vermis, as well as increases in the precuneus (BA 7). The metabolic effects of the two interventions differed in the STN and medial prefrontal cortex, with relative increases with stimulation in the former structure and decreases in the latter. Network quantification disclosed reductions in PDRP activity with both interventions, which correlated with clinical improvement (P < 0.05). The degree of network modulation by therapy did not differ significantly for the two treatment approaches (P > 0.6). These findings support the results of previous imaging studies indicating that effective symptomatic therapies for Parkinson's disease involve a common mechanism. The modulation of pathological brain networks is a critical feature of the treatment response in parkinsonism.
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DOI: 10.1093/brain/awl162
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We examined this notion using PET to compare the metabolic effects of these treatment approaches. Nine Parkinson’s disease patients (age 61.7 ± 11.1 years) were scanned ON and OFF STN stimulation and nine others (age 60.0 ± 9.3 years) were scanned ON and OFF an individual titrated intravenous levodopa infusion. The two treatment groups were matched for baseline disease severity as well as clinical response to therapy. Similarities and differences in the effects of treatment on regional metabolism were assessed using statistical parametric mapping (SPM). In addition, we used network analysis to assess the effect of therapy on the expression of an abnormal Parkinson's disease-related spatial covariance pattern (PDRP). We found that both STN DBS and levodopa therapy were associated with significant (P < 0.001) metabolic reductions in the putamen/globus pallidus, sensorimotor cortex and cerebellar vermis, as well as increases in the precuneus (BA 7). The metabolic effects of the two interventions differed in the STN and medial prefrontal cortex, with relative increases with stimulation in the former structure and decreases in the latter. Network quantification disclosed reductions in PDRP activity with both interventions, which correlated with clinical improvement (P < 0.05). The degree of network modulation by therapy did not differ significantly for the two treatment approaches (P > 0.6). These findings support the results of previous imaging studies indicating that effective symptomatic therapies for Parkinson's disease involve a common mechanism. The modulation of pathological brain networks is a critical feature of the treatment response in parkinsonism.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>État de New York</li></region></list><tree><country name="États-Unis"><region name="État de New York"><name sortKey="Asanuma, Kotaro" sort="Asanuma, Kotaro" uniqKey="Asanuma K" first="Kotaro" last="Asanuma">Kotaro Asanuma</name></region><name sortKey="Asanuma, Kotaro" sort="Asanuma, Kotaro" uniqKey="Asanuma K" first="Kotaro" last="Asanuma">Kotaro Asanuma</name><name sortKey="Asanuma, Kotaro" sort="Asanuma, Kotaro" uniqKey="Asanuma K" first="Kotaro" last="Asanuma">Kotaro Asanuma</name><name sortKey="Dhawan, Vijay" sort="Dhawan, Vijay" uniqKey="Dhawan V" first="Vijay" last="Dhawan">Vijay Dhawan</name><name sortKey="Dhawan, Vijay" sort="Dhawan, Vijay" uniqKey="Dhawan V" first="Vijay" last="Dhawan">Vijay Dhawan</name><name sortKey="Dhawan, Vijay" sort="Dhawan, Vijay" uniqKey="Dhawan V" first="Vijay" last="Dhawan">Vijay Dhawan</name><name sortKey="Edwards, Christine" sort="Edwards, Christine" uniqKey="Edwards C" first="Christine" last="Edwards">Christine Edwards</name><name sortKey="Edwards, Christine" sort="Edwards, Christine" uniqKey="Edwards C" first="Christine" last="Edwards">Christine Edwards</name><name sortKey="Edwards, Christine" sort="Edwards, Christine" uniqKey="Edwards C" first="Christine" last="Edwards">Christine Edwards</name><name sortKey="Eidelberg, David" sort="Eidelberg, David" uniqKey="Eidelberg D" first="David" last="Eidelberg">David Eidelberg</name><name sortKey="Eidelberg, David" sort="Eidelberg, David" uniqKey="Eidelberg D" first="David" last="Eidelberg">David Eidelberg</name><name sortKey="Eidelberg, David" sort="Eidelberg, David" uniqKey="Eidelberg D" first="David" last="Eidelberg">David Eidelberg</name><name sortKey="Feigin, Andrew" sort="Feigin, Andrew" uniqKey="Feigin A" first="Andrew" last="Feigin">Andrew Feigin</name><name sortKey="Feigin, Andrew" sort="Feigin, Andrew" uniqKey="Feigin A" first="Andrew" last="Feigin">Andrew Feigin</name><name sortKey="Feigin, Andrew" sort="Feigin, Andrew" uniqKey="Feigin A" first="Andrew" last="Feigin">Andrew Feigin</name><name sortKey="Kaplitt, Michael G" sort="Kaplitt, Michael G" uniqKey="Kaplitt M" first="Michael G." last="Kaplitt">Michael G. Kaplitt</name><name sortKey="Kaplitt, Michael G" sort="Kaplitt, Michael G" uniqKey="Kaplitt M" first="Michael G." last="Kaplitt">Michael G. Kaplitt</name><name sortKey="Ma, Yilong" sort="Ma, Yilong" uniqKey="Ma Y" first="Yilong" last="Ma">Yilong Ma</name><name sortKey="Ma, Yilong" sort="Ma, Yilong" uniqKey="Ma Y" first="Yilong" last="Ma">Yilong Ma</name><name sortKey="Ma, Yilong" sort="Ma, Yilong" uniqKey="Ma Y" first="Yilong" last="Ma">Yilong Ma</name><name sortKey="Mattis, Paul" sort="Mattis, Paul" uniqKey="Mattis P" first="Paul" last="Mattis">Paul Mattis</name><name sortKey="Mattis, Paul" sort="Mattis, Paul" uniqKey="Mattis P" first="Paul" last="Mattis">Paul Mattis</name><name sortKey="Mattis, Paul" sort="Mattis, Paul" uniqKey="Mattis P" first="Paul" last="Mattis">Paul Mattis</name><name sortKey="Tang, Chengke" sort="Tang, Chengke" uniqKey="Tang C" first="Chengke" last="Tang">Chengke Tang</name><name sortKey="Tang, Chengke" sort="Tang, Chengke" uniqKey="Tang C" first="Chengke" last="Tang">Chengke Tang</name><name sortKey="Tang, Chengke" sort="Tang, Chengke" uniqKey="Tang C" first="Chengke" last="Tang">Chengke Tang</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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