Movement Disorders (revue)

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Neuropathy as a potential complication of levodopa use in Parkinson's disease

Identifieur interne : 003313 ( Main/Merge ); précédent : 003312; suivant : 003314

Neuropathy as a potential complication of levodopa use in Parkinson's disease

Auteurs : Cory Toth [Canada] ; Martin Sutton Brown [Canada] ; Sarah Furtado [Canada] ; Oksana Suchowersky [Canada] ; Douglas Zochodne [Canada]

Source :

RBID : ISTEX:5446F3CBE1DEE65F8B71BB768C0F06C4889691EF

English descriptors

Abstract

The presence and potential etiologies of peripheral neuropathy (PN) in patients with Parkinson's Disease (PD) is unknown. We examined for presence of PN in patients with PD. From a PD patient population of 500 patients screened for features of symptomatic PN, patients were further selected for clinical, electrophysiological, and laboratory studies related to PN. This PD patient population with idiopathic PN (PD‐IPN) was compared to a group of PD patients without PN (PD‐only), and a large group of patients without PD with idiopathic PN (IPN) for abnormalities in Cbl, fasting homocysteine (Hcy), and fasting methylmalonic acid (MMA) levels. PD‐IPN and IPN patients identified with abnormalities in Cbl, Hcy, or MMA levels were treated with intramuscular Cbl for 1 to 2 years. Of 49 PD patients with symptomatic PN, 34 patients (69%) had PD‐IPN, and 32/34 (94%) had abnormal Hcy or MMA levels as compared to 26/258 (10%) of IPN patients. Cumulative lifetime L‐dopa dosage and fasting MMA levels were associated with PN severity. Cbl therapy led to improvements in Hcy and MMA levels in all groups, and PN in PD‐IPN patients stabilized during therapy. PN in PD patients may be associated with iatrogenic Cbl metabolic abnormalities. Alternatively PN may be a peripheral nervous system manifestation of PD. © 2008 Movement Disorder Society

Url:
DOI: 10.1002/mds.22137

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ISTEX:5446F3CBE1DEE65F8B71BB768C0F06C4889691EF

Le document en format XML

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<keywords scheme="MESH" qualifier="etiology" xml:lang="en">
<term>Peripheral Nervous System Diseases</term>
</keywords>
<keywords scheme="MESH" xml:lang="en">
<term>Analysis of Variance</term>
<term>Female</term>
<term>Humans</term>
<term>Male</term>
<term>Retrospective Studies</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">The presence and potential etiologies of peripheral neuropathy (PN) in patients with Parkinson's Disease (PD) is unknown. We examined for presence of PN in patients with PD. From a PD patient population of 500 patients screened for features of symptomatic PN, patients were further selected for clinical, electrophysiological, and laboratory studies related to PN. This PD patient population with idiopathic PN (PD-IPN) was compared to a group of PD patients without PN (PD-only), and a large group of patients without PD with idiopathic PN (IPN) for abnormalities in Cbl, fasting homocysteine (Hcy), and fasting methylmalonic acid (MMA) levels. PD-IPN and IPN patients identified with abnormalities in Cbl, Hcy, or MMA levels were treated with intramuscular Cbl for 1 to 2 years. Of 49 PD patients with symptomatic PN, 34 patients (69%) had PD-IPN, and 32/34 (94%) had abnormal Hcy or MMA levels as compared to 26/258 (10%) of IPN patients. Cumulative lifetime L-dopa dosage and fasting MMA levels were associated with PN severity. Cbl therapy led to improvements in Hcy and MMA levels in all groups, and PN in PD-IPN patients stabilized during therapy. PN in PD patients may be associated with iatrogenic Cbl metabolic abnormalities. Alternatively PN may be a peripheral nervous system manifestation of PD.</div>
</front>
</TEI>
</PubMed>
</double>
</record>

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