Lack of association of morphologic and functional retinal changes with motor and non-motor symptoms severity in Parkinson's disease.

Visual symptoms are common among the nonmotor symptoms in Parkinson's disease. The aims of this study were to assess the diagnostic accuracy and relationship of retinal morphologic and functional changes with motor and non-motor symptoms disturbances in Parkinson's disease. Thirty patients with Parkinson's disease, with a median Hoehn-Yahr stage of 2 (1-4), were compared to 30 age- and gender-matched controls. Retinal thinning and function were measured using optical coherence tomography (OCT), visual evoked potentials (VEP), and pattern electroretinography. Motor impairment and motor laterality were measured using the Short Parkinson's Evaluation Scale/Scales for Outcomes in Parkinson's disease, and non-motor symptoms severity using the nonmotor symptoms questionnaire. Only pattern electroretinography, P50 and N95 amplitudes, were lower in patients with Parkinson's disease, compared to controls (p = 0.01, respectively). Age, disease duration, levodopa dose, motor, and non-motor impairment were not significantly associated with retinal thinning and functional changes. The patients vs. controls area under the curve of OCT, VEP, and pattern electroretinography receiver-operating-characteristic curves were<0.50. In conclusion, morphologic and functional retina changes are not significantly correlated with motor and non-motor symptoms impairment severity, and do not discriminate between Parkinson's disease and controls.

Trastornos digestivos en la enfermedad de Parkinson: disfagia y sialorrea / Digestive disorders in Parkinson’s disease: dysphagia and sialorrhea

Introducción. Los síntomas no motores de la enfermedad de Parkinson representan un trastorno frecuente y a menudo infradiagnosticado. Entre los diferentes síntomas no motores cabe destacar la disfagia y la sialorrea, relativamente habituales en estadios avanzados de la enfermedad por su importante repercusión funcional y por la comorbilidad asociada. Desarrollo y conclusiones. Durante los últimos años se han desarrollado diferentes escalas de valoración para su uso clínico y el cribado de dicha sintomatología. Dentro de las diferentes opciones terapéuticas, la toxina botulínica representa el tratamiento de elección para la sialorrea. En cambio, la logopedia, junto con una optimización del tratamiento antiparkinsoniano, suelen ser medidas útiles para la disfagia, reservándose la gastrostomía endoscópica percutánea para aquellos pacientes parkinsonianos con disfagia grave

Introducción. The non-motor symptoms of Parkinson ’s disease are a frequent and often under-diagnosed disorder. Two of the most significant non-motor symptoms are perhaps dysphagia and sialorrhea (which are relatively common in advanced stages of the disease) owing to their important functional repercussions and to the associated comorbidity. Development and conclusions. In recent years, different evaluation scales have been developed for clinical use and in screening the aforementioned symptoms. Of the different therapeutic options available, botulinum toxin represents the preferred treatment for sialorrhea. In contrast, speech therapy and an optimisation of the antiparkinsonian therapy are generally useful measures to treat dysphagia, percutaneous endoscopic gastrostomy being reserved for patients suffering from Parkinson who have severe dysphagia (AU)