Publications by authors named "Olivier Colin"

Introduction/aims: Neurolymphomatosis is a hematological condition defined by the direct infiltration of malignant lymphomatous cells into the peripheral nervous system. Since nerve conduction studies may disclose demyelinating features, clinicians may misdiagnose neurolymphomatosis as chronic inflammatory demyelinating polyneuropathy (CIDP). This study aimed to determine whether patients with neurolymphomatosis met the 2021 revised criteria for CIDP.

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Background: Lixisenatide, a glucagon-like peptide-1 receptor agonist used for the treatment of diabetes, has shown neuroprotective properties in a mouse model of Parkinson's disease.

Methods: In this phase 2, double-blind, randomized, placebo-controlled trial, we assessed the effect of lixisenatide on the progression of motor disability in persons with Parkinson's disease. Participants in whom Parkinson's disease was diagnosed less than 3 years earlier, who were receiving a stable dose of medications to treat symptoms, and who did not have motor complications were randomly assigned in a 1:1 ratio to daily subcutaneous lixisenatide or placebo for 12 months, followed by a 2-month washout period.

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  • The study explored the potential of bumetanide, a medication aimed at enhancing motor symptoms in Parkinson's disease by targeting GABA-ergic cells.
  • It involved 44 participants in a 4-month trial comparing bumetanide to a placebo in conjunction with levodopa treatment.
  • The results showed no significant improvement in motor symptoms between bumetanide and placebo groups, and bumetanide was poorly tolerated despite no major safety concerns.
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  • Local injections of botulinum toxin type A were tested in a randomized trial to see if they could effectively treat essential head tremor, with participants receiving either the toxin or a placebo.
  • The results showed that 31% of patients treated with botulinum toxin experienced significant improvement in their tremors compared to only 9% in the placebo group, indicating a strong positive effect of the treatment.
  • However, about half of the patients who received botulinum toxin reported side effects, including neck pain and weakness, highlighting the need for caution despite the treatment's effectiveness.
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Background: Longitudinal measures of structural brain changes using MRI in relation to clinical features and progression patterns in PD have been assessed in previous studies, but few were conducted in well-defined and large cohorts, including prospective clinical assessments of both motor and non-motor symptoms.

Objective: We aimed to identify brain volumetric changes characterizing PD patients, and determine whether regional brain volumetric characteristics at baseline can predict motor, psycho-behavioral and cognitive evolution at one year in a prospective cohort of PD patients.

Methods: In this multicentric 1 year longitudinal study, PD patients and healthy controls from the MPI-R2* cohort were assessed for demographical, clinical and brain volumetric characteristics.

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Several postmortem studies have shown iron accumulation in the substantia nigra of Parkinson's disease patients. Iron concentration can be estimated via MRI-R mapping. To assess the changes in R occurring in Parkinson's disease patients compared to controls, a multicentre transversal study was carried out on a large cohort of Parkinson's disease patients (n = 163) with matched controls (n = 82).

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Article Synopsis
  • - The study focuses on evaluating personality traits in fluctuating Parkinson's disease (PD) patients using the Temperament and Character Inventory (TCI), as prior observations suggested specific temperaments in this group of patients.
  • - Results showed that the PD patients had higher scores in traits like Harm Avoidance and Self-Directedness but lower in Self-Transcendence compared to a normative French cohort, with certain traits correlating with anxiety, depression, and quality of life.
  • - The findings suggest that TCI is a reliable tool for assessing personality dimensions in PD patients, highlighting unique personality profiles and significant associations between personality traits and other clinical variables.
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Objectives: We tested the hypothesis that stroke outcomes in patients with preadmission use of benzodiazepine are worse.

Method: In a prospective cohort study, we recruited patients with acute ischaemic stroke. Mortality, functional outcomes and cognition were evaluated at 8 and 90 days after stroke.

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Objective: To delineate the natural history, diagnosis, and treatment response of Parkinson disease (PD) in individuals with 22q11.2 deletion syndrome (22q11.2DS), and to determine if these patients differ from those with idiopathic PD.

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Brain MRI was originally considered to appear normal in neuromyelitis optica spectrum disorders (NMO-SD). Typical brain lesions are now well described and have been integrated in the latest revision of NMO-SD criteria, but the NMO-SD MRI pattern remains not yet comprehensive. We report here extensive white matter lesions (EWML) mimicking leukodystrophy in a 50-year-old woman with long-lasting anti-AQP4+ NMO-SD.

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The aim of this study was to assess an automated detection method of serious adverse reactions induced by oral targeted therapy (OTT) in patients with cancer, performed in the French Diagnosis Related Groups (DRG) database. Patients with cancer of the Poitiers hospital who started an OTT between 2014 and 2015 were included. This study focused on adverse drug reaction which required inpatient hospitalization (ADR ).

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Progressive multifocal leukoencephalopathy (PML) is an often fatal demyelinating disease of the central nervous system. As effective treatment is unavailable, identification of all drugs that could be associated with PML is essential. The objective of this study was to investigate the putative association of reports of PML and drugs.

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Pyridylmethylamines or pma are versatile platforms for different catalytic transformations. Five pma-ligands and their respective Pd complexes have been studied by liquid state NMR. By comparing (1)H, (13)C and (15)N chemical shifts for each pma/pma-Pd couple, a general trend for the metallacycle atoms concerns variations of the electronic distribution at the pendant arm, especially at the nitrogen atom of the ligand.

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