Greater improvement in LRRK2 G2019S patients undergoing Subthalamic Nucleus Deep Brain Stimulation compared to non-mutation carriers
Identifieur interne : 000509 ( Hal/Corpus ); précédent : 000508; suivant : 000510Greater improvement in LRRK2 G2019S patients undergoing Subthalamic Nucleus Deep Brain Stimulation compared to non-mutation carriers
Auteurs : Massiva Sayad ; Mohamed Zouambia ; Malika Chaouch ; Farida Ferrat ; Mustapha Nebbal ; Mohamed Bendini ; Suzanne Lesage ; Alexis Brice ; Mohamed Brahim Errahmani ; Boualem AsselahSource :
- BMC Neuroscience [ 1471-2202 ] ; 2016-12.
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Abstract
BackgroundBilateral subthalamic nucleus deep brain stimulation (STN-DBS) of parkinson’s disease (PD) patients has demonstrated to improve motor performance and to reduce dopa-induced dyskinesia. An association between the occurrence of dyskinesias and LRRK2 (leucine-rich repeat kinase 2) G2019S gene mutations has recently been suggested. The aim of this study is to discover the impact of the G2019S mutation (with high incidence in the authors’ native Algeria) on the symptom response of PD in patients who underwent STN-DBS.MethodsWe carried out a comparative statistical study for the clinical evaluation and neuropsychological assessment of 27 Algerian PD STN-DBS patients, both G2019S mutation carriers (MC) and non-carriers (NC). A multiple correspondence analysis (MCA) was then conducted to compare the results with those from groups of individuals with similar modalities.ResultsThe MCA revealed that MC and NC PD patients showed two different patterns of clinical evaluations. The group of idiopathic patients showed some differences compared to the clinical evaluations, depending on gender. No association was found between the G2019S mutation and the Mini Mental State Examination scores (MMSE), and MC patients appeared more susceptible to dyskinesia than NC patients. In NC patients, we found two cases with Parkin mutations who had a different “honeymoon” period and different initial symptoms. The results showed considerable improvement of motor unified parkinson’s disease rating scale III (UPDRS-III) in a situation of stimulation without medication in the MC patients with a percentage of improvement (51.1 %) over the required 30 % compared to the NC patients (25.5 %). The same result was observed for the Schwab and England’s activities of daily living scale (S and E scale), which thus demonstrated a greater effectiveness of DBS for MC patients than for NC patients. However, the Hoehn and Yahr scale (H and Y Scale) showed the same significance in a situation of stimulation for MC and NC patients. In this later group, the best scores of UPDRS-III were observed for patients with the Parkin mutation before they underwent surgery.ConclusionsThis study shows that surgical treatment probably has a more significant impact on LRRK2 G2019S MC than on idiopathic patients.
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DOI: 10.1186/s12868-016-0240-4
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Hal:hal-01281654Le document en format XML
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<author><name sortKey="Brahim Errahmani, Mohamed" sort="Brahim Errahmani, Mohamed" uniqKey="Brahim Errahmani M" first="Mohamed" last="Brahim Errahmani">Mohamed Brahim Errahmani</name>
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<author><name sortKey="Asselah, Boualem" sort="Asselah, Boualem" uniqKey="Asselah B" first="Boualem" last="Asselah">Boualem Asselah</name>
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<idno type="DOI">10.1186/s12868-016-0240-4</idno>
<series><title level="j">BMC Neuroscience</title>
<idno type="ISSN">1471-2202</idno>
<imprint><date type="datePub">2016-12</date>
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<profileDesc><textClass><keywords scheme="mix" xml:lang="en"><term>LRRK2 (Leucine-rich repeat kinase 2) G2019S gene mutations</term>
<term>Mutation carrier (MC)</term>
<term>Non-carriers (NC)</term>
<term>Parkinson’s disease (PD)</term>
<term>Subthalamic Nucleus Deep Brain Stimulation (STN-DBS)</term>
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<front><div type="abstract" xml:lang="en">BackgroundBilateral subthalamic nucleus deep brain stimulation (STN-DBS) of parkinson’s disease (PD) patients has demonstrated to improve motor performance and to reduce dopa-induced dyskinesia. An association between the occurrence of dyskinesias and LRRK2 (leucine-rich repeat kinase 2) G2019S gene mutations has recently been suggested. The aim of this study is to discover the impact of the G2019S mutation (with high incidence in the authors’ native Algeria) on the symptom response of PD in patients who underwent STN-DBS.MethodsWe carried out a comparative statistical study for the clinical evaluation and neuropsychological assessment of 27 Algerian PD STN-DBS patients, both G2019S mutation carriers (MC) and non-carriers (NC). A multiple correspondence analysis (MCA) was then conducted to compare the results with those from groups of individuals with similar modalities.ResultsThe MCA revealed that MC and NC PD patients showed two different patterns of clinical evaluations. The group of idiopathic patients showed some differences compared to the clinical evaluations, depending on gender. No association was found between the G2019S mutation and the Mini Mental State Examination scores (MMSE), and MC patients appeared more susceptible to dyskinesia than NC patients. In NC patients, we found two cases with Parkin mutations who had a different “honeymoon” period and different initial symptoms. The results showed considerable improvement of motor unified parkinson’s disease rating scale III (UPDRS-III) in a situation of stimulation without medication in the MC patients with a percentage of improvement (51.1 %) over the required 30 % compared to the NC patients (25.5 %). The same result was observed for the Schwab and England’s activities of daily living scale (S and E scale), which thus demonstrated a greater effectiveness of DBS for MC patients than for NC patients. However, the Hoehn and Yahr scale (H and Y Scale) showed the same significance in a situation of stimulation for MC and NC patients. In this later group, the best scores of UPDRS-III were observed for patients with the Parkin mutation before they underwent surgery.ConclusionsThis study shows that surgical treatment probably has a more significant impact on LRRK2 G2019S MC than on idiopathic patients.</div>
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<author role="aut"> <persName> <forename type="first">Suzanne</forename>
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<author role="aut"> <persName> <forename type="first">Alexis</forename>
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<author role="aut"> <persName> <forename type="first">Mohamed</forename>
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<author role="aut"> <persName> <forename type="first">Suzanne</forename>
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<author role="aut"> <persName> <forename type="first">Alexis</forename>
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<author role="aut"> <persName> <forename type="first">Mohamed</forename>
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<term xml:lang="en">LRRK2 (Leucine-rich repeat kinase 2) G2019S gene mutations</term>
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<abstract xml:lang="en">BackgroundBilateral subthalamic nucleus deep brain stimulation (STN-DBS) of parkinson’s disease (PD) patients has demonstrated to improve motor performance and to reduce dopa-induced dyskinesia. An association between the occurrence of dyskinesias and LRRK2 (leucine-rich repeat kinase 2) G2019S gene mutations has recently been suggested. The aim of this study is to discover the impact of the G2019S mutation (with high incidence in the authors’ native Algeria) on the symptom response of PD in patients who underwent STN-DBS.MethodsWe carried out a comparative statistical study for the clinical evaluation and neuropsychological assessment of 27 Algerian PD STN-DBS patients, both G2019S mutation carriers (MC) and non-carriers (NC). A multiple correspondence analysis (MCA) was then conducted to compare the results with those from groups of individuals with similar modalities.ResultsThe MCA revealed that MC and NC PD patients showed two different patterns of clinical evaluations. The group of idiopathic patients showed some differences compared to the clinical evaluations, depending on gender. No association was found between the G2019S mutation and the Mini Mental State Examination scores (MMSE), and MC patients appeared more susceptible to dyskinesia than NC patients. In NC patients, we found two cases with Parkin mutations who had a different “honeymoon” period and different initial symptoms. The results showed considerable improvement of motor unified parkinson’s disease rating scale III (UPDRS-III) in a situation of stimulation without medication in the MC patients with a percentage of improvement (51.1 %) over the required 30 % compared to the NC patients (25.5 %). The same result was observed for the Schwab and England’s activities of daily living scale (S and E scale), which thus demonstrated a greater effectiveness of DBS for MC patients than for NC patients. However, the Hoehn and Yahr scale (H and Y Scale) showed the same significance in a situation of stimulation for MC and NC patients. In this later group, the best scores of UPDRS-III were observed for patients with the Parkin mutation before they underwent surgery.ConclusionsThis study shows that surgical treatment probably has a more significant impact on LRRK2 G2019S MC than on idiopathic patients.</abstract>
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