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type=\u0022text\/css\u0022 rel=\u0022stylesheet\u0022 href=\u0022\/\/d282kpwvnogo5m.cloudfront.net\/sites\/default\/files\/cdn\/css\/http\/css_Xg7z6oCTVgud_Q0huYz9x9iiD5H_2YPSJ5z2ZViSWdY.css\u0022 media=\u0022all\u0022 \/\u003E\n\u003Clink rel=\u0027stylesheet\u0027 type=\u0027text\/css\u0027 href=\u0027\/sites\/all\/modules\/contrib\/panels\/plugins\/layouts\/onecol\/onecol.css\u0027 \/\u003E\u003C\/head\u003E\u003Cbody\u003E\u003Cdiv class=\u0022panels-ajax-tab-panel panels-ajax-tab-panel-sageoa-tab-art\u0022\u003E\u003Cdiv class=\u0022panel-display panel-1col clearfix\u0022 \u003E\n  \u003Cdiv class=\u0022panel-panel panel-col\u0022\u003E\n    \u003Cdiv\u003E\u003Cdiv class=\u0022panel-pane pane-highwire-markup\u0022 \u003E\n  \n      \n  \n  \u003Cdiv class=\u0022pane-content\u0022\u003E\n    \u003Cdiv class=\u0022highwire-markup\u0022\u003E\u003Cdiv xmlns=\u0022http:\/\/www.w3.org\/1999\/xhtml\u0022 id=\u0022content-block-markup\u0022 xmlns:xhtml=\u0022http:\/\/www.w3.org\/1999\/xhtml\u0022\u003E\u003Cdiv class=\u0022article fulltext-view \u0022\u003E\u003Cspan class=\u0022highwire-journal-article-marker-start\u0022\u003E\u003C\/span\u003E\u003Cdiv class=\u0022section abstract\u0022 id=\u0022abstract-1\u0022\u003E\u003Ch2\u003ESummary\u003C\/h2\u003E\n            \u003Cp id=\u0022p-1\u0022\u003EEfforts to find a treatment for Parkinson\u0027s disease (PD) began in the mid-1950s with the discovery of levodopa (L-dopa). Since then, advancements in treatment have included a variety of different modes of L-dopa administration as well as the development of other medical therapies, continuous infusions, and deep brain stimulation. This discusses the L-dopa story and treatment strategies for early and late PD.\u003C\/p\u003E\n         \u003C\/div\u003E\u003Cul class=\u0022kwd-group\u0022\u003E\u003Cli class=\u0022kwd\u0022\u003EExtrapyramidal \u0026amp; Movement Disorders\u003C\/li\u003E\u003C\/ul\u003E\u003Cul class=\u0022kwd-group clinical-trial\u0022\u003E\u003Cli class=\u0022kwd\u0022\u003EExtrapyramidal \u0026amp; Movement Disorders\u003C\/li\u003E\u003Cli class=\u0022kwd\u0022\u003ENeurology\u003C\/li\u003E\u003C\/ul\u003E\u003Cp id=\u0022p-2\u0022\u003EEfforts to find a treatment for Parkinson\u0027s disease (PD) began in the mid-1950s with the discovery of levodopa (L-dopa). Since then, advancements in treatment have included a variety of different modes of L-dopa administration as well as the development of other medical therapies, continuous infusions, and deep brain stimulation (DBS). This session featured presentations on the L-dopa story and treatment strategies for early and late PD.\u003C\/p\u003E\u003Cdiv class=\u0022section\u0022 id=\u0022sec-1\u0022\u003E\n         \u003Ch2 class=\u0022\u0022\u003EL-DOPA: FROM IDEA TO TREATMENT\u003C\/h2\u003E\n         \u003Cp id=\u0022p-3\u0022\u003EArvid Carlsson, MD, Sahlgrenska Science Park, Gothenburg, Sweden, winner of the 2000 Nobel Prize in Physiology or Medicine, reviewed the history of treatment for PD, focusing on the discovery and development of L-dopa, the precursor of dopamine. The story of the characterization of L-dopa began in 1955, shortly after Prof. Carlsson joined Bernard B. Brodie, MD, at the Laboratory of Chemical Pharmacology of the National Heart Institute, Bethesda, Maryland, USA. There, members of Dr. Brodie\u0027s team discovered that administration of reserpine caused almost complete disappearance of serotonin from the brain and other tissues.\u003C\/p\u003E\n         \u003Cp id=\u0022p-4\u0022\u003EAfter working with Dr. Brodie, Prof. Carlsson collaborated with Nils-Ake Hillarp, PhD, MD, at the University of Lund, Lund, Sweden, where he studied the effects of reserpine in rabbits. From these experiments, the investigators learned that reserpine depleted catecholamines from heart and brain tissue and that movement was inhibited in reserpine-treated rabbits, mimicking the symptoms of PD. Treatment of these rabbits with the catecholamine precursor, 3,4-dihydroxyphenylalanine (dopa), caused a dramatic reversal of the symptoms within 15 minutes. These results, published in 1957, established that reserpine depletes serotonin and catecholamines in the body and dopa reverses that depletion.\u003C\/p\u003E\n         \u003Cp id=\u0022p-5\u0022\u003ESubsequent animal studies showed that it was not dopa itself, but dopamine, a monoamine formed from the precursor (dopa), that reversed reserpine\u0027s effects. Further investigations, published in 1958, demonstrated that dopamine accumulates in the basal ganglia of the brain, which are involved in motor function. These findings led to the conclusion that dopamine depletion induces PD and that treatment with L-dopa could restore dopamine levels, alleviating PD symptoms.\u003C\/p\u003E\n         \u003Cp id=\u0022p-6\u0022\u003EProf. Carlsson presented his findings at a symposium on catecholamines at the National Institutes of Health in 1958. Two years later, at a London symposium, Prof. Carlsson\u0027s conclusions were rejected by Nobel laureate Sir Henry Dale and his colleagues, who argued that dopamine is a poison. This rejection spurred Profs. Hillarp and Carlsson, together with many colleagues, to develop fluorescent techniques for visualizing neurotransmitters in neurons. Within a few years, they established the presence of dopamine in the substantia nigra, mapped the major monoaminergic pathways, and determined the sites of action of major psychotropic drugs, including monoamine oxidase (MAO) inhibitors, chlorpromazine, reserpine, and imipramine.\u003C\/p\u003E\n         \u003Cp id=\u0022p-7\u0022\u003EIn the early 1960s, Austrian researchers reported a marked reduction of dopamine in the brains of deceased PD patients. Following this, Walther Birkmayer demonstrated temporary improvement of akinesia in patients with PD after a single dose of L-dopa. Other laboratories, however, had varying results with L-dopa treatment in PD patients.\u003C\/p\u003E\n         \u003Cp id=\u0022p-8\u0022\u003EIn the late 1960s, George Cotzias, MD, treated manganese miners who presented with symptoms similar to those of PD. Rather than giving L-dopa intravenously or orally in low doses, he treated PD patients with escalating oral doses until they were receiving much higher doses than had been given in previous studies. Prof. Carlsson and others replicated his findings in PD patients, and as a result, L-dopa became established as the gold standard for the treatment of PD. Prof. Carlsson concluded his presentation by recommending the book \u003Cem\u003EAwakenings\u003C\/em\u003E by Oliver Sacks, which chronicled the L-dopa story and was made into a movie.\u003C\/p\u003E\n      \u003C\/div\u003E\u003Cdiv class=\u0022section\u0022 id=\u0022sec-2\u0022\u003E\n         \u003Ch2 class=\u0022\u0022\u003ETREATMENT OF EARLY PARKINSON\u0027S DISEASE\u003C\/h2\u003E\n         \u003Cp id=\u0022p-9\u0022\u003EHeinz Reichmann, MD, University of Dresden, Dresden, Germany, outlined the initial treatment options for patients with PD: a dopamine agonist or MAO-B inhibitor for patients with mild motor disability and no cognitive impairment; a dopamine agonist for those with moderate or severe motor disability and no cognitive impairment; and L-dopa for patients with moderate or severe motor disability aged 70 years and older or who have significant comorbidity, including cognitive impairment. Treatment options might be different, however, with earlier diagnosis of PD and earlier initiation of treatment.\u003C\/p\u003E\n         \u003Cp id=\u0022p-10\u0022\u003EThe lesions of PD are initially confined to the medulla oblongata and olfactory bulb (Stages 1 and 2), but they eventually progress to involve the substantia nigra and other nuclear gray areas of the midbrain and basal forebrain (somatomotor dysfunction; Stages 3 and 4). Eventually, the cerebral cortex is encroached on, resulting in increasing cognitive deterioration (Stages 5 and 6) [Braak H et al. \u003Cem\u003EJ Neurol\u003C\/em\u003E 2002]. Often, patients do not seek medical care when early symptoms appear, attributing them to the normal aging process.\u003C\/p\u003E\n         \u003Cp id=\u0022p-11\u0022\u003EThus, unfortunately, by the time that many patients are diagnosed, the pathology has progressed significantly. Consider what can be done to identify these individuals earlier. In theory, improved diagnostic skills could lead clinicians to closely track patients presenting with the earliest symptoms, such as olfactory impairment or idiopathic rapid eye movement (REM)\u2013sleep behavior disorder (RBD). One study of 44 patients with RBD reported that 20 (45%) eventually developed a neurological disorder, which typically occurred at a mean follow-up of 5.1 years after diagnosis [Iranzo A et al. \u003Cem\u003ELancet Neurol\u003C\/em\u003E 2006]. These neurological diagnoses included PD (n=9), Lewy body dementia (n=6), multiple system atrophy-C (n=1), and mild cognitive impairment (n=4).\u003C\/p\u003E\n         \u003Cp id=\u0022p-12\u0022\u003EAccording to Prof. Reichmann, timing of treatment initiation should be individualized. He reviewed the results of several studies on early versus delayed treatment (\u003Ca id=\u0022xref-table-wrap-1-1\u0022 class=\u0022xref-table\u0022 href=\u0022#T1\u0022\u003ETable 1\u003C\/a\u003E).\u003C\/p\u003E\n         \u003Cdiv id=\u0022T1\u0022 class=\u0022table pos-float\u0022\u003E\u003Cdiv class=\u0022table-inline\u0022\u003E\u003Cdiv class=\u0022callout\u0022\u003E\u003Cspan\u003EView this table:\u003C\/span\u003E\u003Cul class=\u0022callout-links\u0022\u003E\u003Cli class=\u00220 first\u0022\u003E\u003Ca href=\u0022\/\u0022 class=\u0022table-expand-inline\u0022 data-table-url=\u0022\/highwire\/markup\/14570\/expansion?postprocessors=highwire_figures%2Chighwire_math%2Chighwire_inline_linked_media%2Chighwire_embed\u0026amp;table-expand-inline=1\u0022 html=\u00221\u0022 fragment=\u0022#\u0022 external=\u00221\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EView inline\u003C\/a\u003E\u003C\/li\u003E\u003Cli class=\u00221\u0022\u003E\u003Ca href=\u0022\/highwire\/markup\/14570\/expansion?width=1000\u0026amp;height=500\u0026amp;iframe=true\u0026amp;postprocessors=highwire_figures%2Chighwire_math%2Chighwire_inline_linked_media\u0022 class=\u0022colorbox colorbox-load table-expand-popup\u0022 rel=\u0022gallery-fragment-tables\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EView popup\u003C\/a\u003E\u003C\/li\u003E\u003Cli class=\u00222 last\u0022\u003E\u003Ca href=\u0022\/highwire\/powerpoint\/14570\u0022 class=\u0022highwire-figure-link highwire-figure-link-ppt\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EDownload powerpoint\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cdiv class=\u0022table-caption\u0022\u003E\u003Cspan class=\u0022table-label\u0022\u003ETable 1.\u003C\/span\u003E \n               \u003Cp id=\u0022p-13\u0022 class=\u0022first-child\u0022\u003EStudies of Early Versus Delayed Treatment for Parkinson\u0027s Disease\u003C\/p\u003E\n            \u003Cdiv class=\u0022sb-div caption-clear\u0022\u003E\u003C\/div\u003E\u003C\/div\u003E\u003C\/div\u003E\n         \u003Cp id=\u0022p-15\u0022\u003EOther issues with treatment of Parkinson\u0027s disease include the development of dyskinesias with increased doses of L-dopa, patient noncompliance with treatment regimens, and on-and-off periods of symptom control due to inconsistent plasma drug concentrations with multiple dosing regimens. Alternative drug delivery methods have been evaluated to improve patient compliance and maintain consistent plasma drug levels. Among these are controlled-release oral therapy with ropinirole, subcutaneous apomorphine infusion, intrajejunal L-dopa infusion, and transdermal application (rotigotine transdermal patch).\u003C\/p\u003E\n         \u003Cp id=\u0022p-16\u0022\u003EProf. Reichmann recommended using combination therapy with L-dopa (\u0026lt;600 mg\/day) and a dopamine agonist. Initial treatment should be patient specific, however. Younger patients should be started on dopamine agonists, whereas older patients should be treated with L-dopa. Finally, patient safety and compliance should be key considerations when determining treatment strategies.\u003C\/p\u003E\n      \u003C\/div\u003E\u003Cdiv class=\u0022section\u0022 id=\u0022sec-3\u0022\u003E\n         \u003Ch2 class=\u0022\u0022\u003ETREATMENT STRATEGIES FOR ADVANCING PARKINSON\u0027S DISEASE\u003C\/h2\u003E\n         \u003Cp id=\u0022p-17\u0022\u003ELars Timmerman, MD, University Hospital Cologne, Cologne, Germany, presented data on treatment strategies for patients with advancing PD. He focused on continuous delivery therapies and DBS, particularly with respect to patient selection for these therapies and their use in clinical practice.\u003C\/p\u003E\n         \u003Cp id=\u0022p-18\u0022\u003ETreatment of PD with drug therapy is typically characterized by good symptom control in the early stage, but as the disease progresses, patients experience fluctuations in symptom control, with \u201cwearing off\u201d of the effect and increasing \u201coff\u201d periods as PD becomes more severe. Oral therapy options recommended by the German Neurological Society to counteract wearing off include frequent dosing with single-dose reduction, a long-acting dopamine agonist, a transdermal continuous dopamine agonist, catechol O-methyltransferase (COMT) inhibitors, MAO inhibitors, and amantadine [Eggert KM et al. \u003Cem\u003ELeitlinien f\u00fcr Diagnostik und Therapie in der Neurologie.\u003C\/em\u003E 2012].\u003C\/p\u003E\n         \u003Cp id=\u0022p-19\u0022\u003EContinuous drug delivery options for advanced PD include the L-dopa\u2013carbidopa intestinal gel (LCIG) pump system for continuous intrajejunal delivery and continuous subcutaneous apomorphine therapy. \u003Ca id=\u0022xref-table-wrap-2-1\u0022 class=\u0022xref-table\u0022 href=\u0022#T2\u0022\u003ETable 2\u003C\/a\u003E summarizes results from studies evaluating these therapies in patients with advanced PD.\u003C\/p\u003E\n         \u003Cdiv id=\u0022T2\u0022 class=\u0022table pos-float\u0022\u003E\u003Cdiv class=\u0022table-inline\u0022\u003E\u003Cdiv class=\u0022callout\u0022\u003E\u003Cspan\u003EView this table:\u003C\/span\u003E\u003Cul class=\u0022callout-links\u0022\u003E\u003Cli class=\u00220 first\u0022\u003E\u003Ca href=\u0022\/\u0022 class=\u0022table-expand-inline\u0022 data-table-url=\u0022\/highwire\/markup\/14571\/expansion?postprocessors=highwire_figures%2Chighwire_math%2Chighwire_inline_linked_media%2Chighwire_embed\u0026amp;table-expand-inline=1\u0022 html=\u00221\u0022 fragment=\u0022#\u0022 external=\u00221\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EView inline\u003C\/a\u003E\u003C\/li\u003E\u003Cli class=\u00221\u0022\u003E\u003Ca href=\u0022\/highwire\/markup\/14571\/expansion?width=1000\u0026amp;height=500\u0026amp;iframe=true\u0026amp;postprocessors=highwire_figures%2Chighwire_math%2Chighwire_inline_linked_media\u0022 class=\u0022colorbox colorbox-load table-expand-popup\u0022 rel=\u0022gallery-fragment-tables\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EView popup\u003C\/a\u003E\u003C\/li\u003E\u003Cli class=\u00222 last\u0022\u003E\u003Ca href=\u0022\/highwire\/powerpoint\/14571\u0022 class=\u0022highwire-figure-link highwire-figure-link-ppt\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EDownload powerpoint\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cdiv class=\u0022table-caption\u0022\u003E\u003Cspan class=\u0022table-label\u0022\u003ETable 2.\u003C\/span\u003E \n               \u003Cp id=\u0022p-20\u0022 class=\u0022first-child\u0022\u003EStudies of Continuous Drug Delivery in Patients With Advanced Parkinson\u0027s Disease\u003C\/p\u003E\n            \u003Cdiv class=\u0022sb-div caption-clear\u0022\u003E\u003C\/div\u003E\u003C\/div\u003E\u003C\/div\u003E\n         \u003Cp id=\u0022p-22\u0022\u003EEuroInf [Reddy P et al. MDS 2013 (poster 596)] was a novel, case-controlled, comparative multicenter study that compared treatment with continuous apomorphine versus LCIG. Investigators reported a robust improvement in motor and quality-of-life (QoL) scores with a large effect size with both therapies on UPDRS 3 and 4. Sleep and fatigue were significantly improved by LCIG versus apomorphine (p=0.017), apomorphine significantly improved mood and apathy (p=0.03), and autonomic functions were moderately improved with LCIG and mildly improved with apomorphine. Both therapies had a large beneficial effect on QoL.\u003C\/p\u003E\n         \u003Cp id=\u0022p-23\u0022\u003EIn Prof. Timmerman\u0027s opinion, LCIG pump therapy is suitable for the following patients: L-dopa responders of any age with insufficient response to oral combination therapies, with or without motor fluctuations, off-periods, and depression. Problems with LCIG are mostly technical or involve cost issues. Continuous apomorphine therapy is suitable for younger patients with good L-dopa response and motor complications, despite oral therapy. On-off fluctuations, dyskinesias, off-dystonia, and L-dopa-induced mild neuropsychiatric problems are not contraindications. Patients who might have problems include those who are underweight, are on anticoagulants, have tremor that is nonresponsive to dopaminergic therapy, and have dementia or hallucinations.\u003C\/p\u003E\n         \u003Cp id=\u0022p-24\u0022\u003EDBS involves high-frequency electrical stimulation of the subthalamic nucleus via implanted electrodes. A study of DBS versus medication in patients with advanced PD reported significant improvements in mobility (p\u0026lt;0.001), activities of daily living (p\u0026lt;0.001), emotional well-being (p\u0026lt;0.001), stigma (p\u0026lt;0.001), and bodily discomfort (p=0.009) [Deuschl G et al. \u003Cem\u003EN Engl J Med\u003C\/em\u003E 2006]. Adverse events with DBS included suicide (n=1) and postoperative confusion (n=4).\u003C\/p\u003E\n         \u003Cp id=\u0022p-25\u0022\u003EA recent interim analysis demonstrated significant improvement of nonmotor deficits in PD patients treated with DBS [Dafsari HS et al. MDS 2014 (abstr SG 10)]. Schuepbach and colleagues [\u003Cem\u003EN Engl J Med\u003C\/em\u003E 2013] reported significant improvement in QoL with DBS versus medical therapy in patients with earlier stages of PD (p=0.002). The VANTAGE trial [\u003Ca class=\u0022external-ref external-ref-type-clintrialgov\u0022 href=\u0022\/lookup\/external-ref?link_type=CLINTRIALGOV\u0026amp;access_num=NCT01221948\u0026amp;atom=%2Fspmdc%2F14%2F15%2F4.atom\u0022\u003ENCT01221948\u003C\/a\u003E; Timmerman L et al. MDS 2013 (abstr 486)] of DBS showed 62.4% improved motor function from baseline (medications off) to 6 months (DBS on, medications off; p\u0026lt;0.0001).\u003C\/p\u003E\n         \u003Cp id=\u0022p-26\u0022\u003EBased on the evidence, Prof. Timmerman concluded this lecture with the assertion that subthalamic DBS is suitable for PD patients aged \u0026lt;75 years who have impaired QoL despite optimized therapy. DBS candidates should have an L-dopa response \u0026gt;30% or tremor (UPDRS \u0026gt;2), no dementia or severe psychiatric problems, minimal axial symptoms, and realistic expectations for therapy.\u003C\/p\u003E\n      \u003C\/div\u003E\u003Cul class=\u0022copyright-statement\u0022\u003E\u003Cli class=\u0022fn\u0022 id=\u0022copyright-statement-1\u0022\u003E\u00a9 2014 MD Conference Express\u00ae\u003C\/li\u003E\u003C\/ul\u003E\u003Cspan class=\u0022highwire-journal-article-marker-end\u0022\u003E\u003C\/span\u003E\u003C\/div\u003E\u003Cspan id=\u0022related-urls\u0022\u003E\u003C\/span\u003E\u003C\/div\u003E\u003Ca href=\u0022http:\/\/mdc.sagepub.com\/content\/14\/15\/4.abstract\u0022 class=\u0022hw-link hw-link-article-abstract\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EView Summary\u003C\/a\u003E\u003C\/div\u003E  \u003C\/div\u003E\n\n  \n  \u003C\/div\u003E\n\u003C\/div\u003E\n  \u003C\/div\u003E\n\u003C\/div\u003E\n\u003C\/div\u003E\u003Cscript type=\u0022text\/javascript\u0022 src=\u0022http:\/\/mdc.sagepub.com\/sites\/all\/modules\/highwire\/highwire\/plugins\/highwire_markup_process\/js\/highwire_openurl.js?nzp432\u0022\u003E\u003C\/script\u003E\n\u003Cscript type=\u0022text\/javascript\u0022 src=\u0022http:\/\/mdc.sagepub.com\/sites\/all\/modules\/highwire\/highwire\/plugins\/highwire_markup_process\/js\/highwire_tables.js?nzp432\u0022\u003E\u003C\/script\u003E\n\u003C\/body\u003E\u003C\/html\u003E"}