Olfaction and apathy in early idiopathic Parkinson's disease.

BACKGROUND: Apathy remains a disabling symptom in Parkinson's disease (PD) with limited therapeutic success. Processing of emotions and smell share neuroanatomical and evolutionary pathways. OBJECTIVES: To explore the association of apathy with smell dysfunction (SD) in early PD. METHODS: We analyzed patients with de-novo PD, with follow-up of at least 5 years from the Parkinson's Progression Markers Initiative. SD and apathy were defined using University of Pennsylvania Smell Identification Test and MDS-UPDRS part 1A. Odds ratios were calculated between apathy and olfaction groups. Kaplan-Meier survival analysis was grouped by presence/ absence of smell dysfunction. The Log Rank test was used to compare time to apathy. RESULTS: We found no association between presence of apathy in patients with and without SD (OR 1.01 [0.49-2.08]). There was no significant difference between PD patients with and without SD in time to apathy (p = 0.72). CONCLUSIONS: SD does not portend greater risk of apathy in PD.

Movement disorders associated with antiseizure medications: A systematic review.

New-onset movement disorders have been frequently reported in association with the use of antiseizure medications (ASMs). The frequency of specific motor manifestations and the spectrum of their semiology for various ASMs have not been well characterized. We carried out a systematic review of literature and conducted a search on CINAHL, Cochrane Library, EMBASE, MEDLINE, PsycINFO, and Scopus from inception to April 2021. We compiled the data for all currently available ASMs using the conventional terminology of movement disorders. Among 5123 manuscripts identified by the search, 437 met the inclusion criteria. The largest number of reports of abnormal movements were in association with phenobarbital, valproic acid, lacosamide, and perampanel, and predominantly included tremor and ataxia. The majority of attempted interventions for all agents were discontinuation of the offending drug or dose reduction which led to the resolution of symptoms in most patients. Familiarity with the movement disorder phenomenology previously encountered in relation with specific ASMs facilitates early recognition of adverse effects and timely institution of targeted interventions.

Timing matters: Otological symptoms and Parkinson's disease.

INTRODUCTION: Otological symptoms contribute to the disability of established Parkinson's disease (PD). We sought to evaluate whether prodromal onset may affect PD progression. METHODS: A retrospective cohort design was used to compare time to advanced disease, defined as a Hoehn & Yahr stage ≥3 in consecutive PD patients with history of auditory and/or vestibular symptoms appearing before versus after PD onset. Time from PD onset to H&Y ≥ 3 was determined using Cox proportional hazards, with adjusted results summarized as hazards ratio (HR). RESULTS: After adjusting for age at PD onset, there was a lower risk of progression to advanced disease in patients with prodromal otological symptoms compared to those with otological symptoms after PD onset (HR = 0.34; 95%CI: 0.15-0.75, p = 0.008). This association remained significant after adjusting for age at PD onset and MDS-UPDRS III (HR = 0.25; 95% CI: 0.10-0.63, p = 0.003) and propensity score-adjusted analysis (HR = 0.46; 95% CI: 0.24-0.91, p = 0.025). CONCLUSION: Prodromal otological symptoms might be associated with a reduced risk of motor progression in PD.

Subthalamic deep brain stimulation and levodopa in Parkinson's disease: a meta-analysis of combined effects.

INTRODUCTION: While subthalamic nucleus deep brain stimulation (STN-DBS) and levodopa improve motor symptoms in Parkinson disease (PD) to a similar magnitude, their combined effect remains unclear. We sought to evaluate whether STN-DBS and levodopa yield differential effects on motor outcomes, dyskinesia, and activities of daily living (ADL) when combined compared to when administered alone. METHODS: We conducted a meta-analysis of all studies reporting motor, dyskinesia, and ADL outcomes after bilateral STN-DBS in PD with presurgical Unified Parkinson's Disease Rating Scale (UPDRS-III) in Medication-OFF and Medication-ON states and postsurgical assessments in four conditions: Stimulation-ON/Medication-ON, Stimulation-ON/Medication-OFF, Stimulation-OFF/Medication-ON, and Stimulation-OFF/Medication-OFF. Dyskinesia duration (UPDRS item 32) and ADL (UPDRS-II) were compared between high and low postsurgical levodopa equivalent daily dose (LEDD) reduction. Random-effects meta-analyses using generic-inverse variance were conducted. Confidence in outcomes effect sizes was assessed. RESULTS: Twelve studies were included (n = 401 patients). Stimulation-ON/Medication-ON was associated with an UPDRS-III improvement of - 35.7 points [95% confidence interval, - 40.4, - 31.0] compared with Stimulation-OFF/Medication-OFF, - 11.2 points [- 14.0, - 8.4] compared with Stimulation-OFF/Medication-ON, and - 9.5 points [- 11.0, - 8.0] compared to Stimulation-ON/Medication-OFF within 5 years. The difference was maintained beyond 5 years by - 28.6 [- 32.8, - 24.4], - 8.1 [- 10.2, - 5.9], and - 8.0 [- 10.3, - 5.6], respectively. No difference was observed between Stimulation-ON/Medication-OFF and Stimulation-OFF/Medication-ON within and beyond 5 years. Dyskinesia duration and ADL outcomes were similar in high vs. low postsurgical LEDD reduction. CONCLUSION: Subthalamic nucleus deep brain stimulation and levodopa independently lessened motor severity in PD to a similar magnitude, but their combined effect was greater than either treatment alone, suggesting therapeutic synergism.

Traumatismo encefalocraneano en niños atendidos en un hospital nacional de Lima, Perú 2004-2011 / Traumatic bran injury in children attending a national hospital in Lima, Peru 2004-2011

Con el objetivo de describir las características del traumatismo encéfalocraneano (TEC) en niños atendidos en el Hospital Nacional Cayetano Heredia entre los años 2004 y 2011 se realizó un estudio de serie de casos. Se incluyeron 316 menores de 14 años, la mediana de edad fue 4 ± 3 años. El 63,9% fueron hombres. Las principales causas del TEC fueron las caídas (80,1%), y los accidentes de tránsito (10,4%). El 42,4% (134/316) ocurrieron durante horas de la tarde. Hubo mayor frecuencia de accidentes en el hogar (59,2%). El hematoma epidural (26,9%) fue la lesión intracraneal más frecuente. Se requirió manejo en cuidados intensivos en 15,8% e intervenciones quirúrgicas en 14,2% de los casos. Se concluye que las caídas en el hogar fueron la causa principal de TEC y el hematoma epidural la lesión intracraneal más común donde son los menores de 5 años los más afectados.

In order to describe the characteristics of traumatic brain injury (TEC) in children seen at the Cayetano Heredia National Hospital from 2004 to 2011, a case study was conducted. 316, 14 year-old minors were included, the median age was 4 ± 3 years old. 63.9% were male. The main causes of TEC were falls (80.1%) and car accidents (10.4%). 42.4% (134/316) occurred in the afternoon. There was a higher incidence of falls at home (59.2%). The epidural hematoma (26.9%) was the most common intracraneal injury. Intensive care management and neurosurgical interventions were required in 15.8 and 14.2% of cases respectively. It is concluded that domestic falls were the main cause of accidents for TEC and epidural hematoma the most common intracranial injury where children under 5 were the most affected.

[Traumatic bran injury in children attending a national hospital in Lima, Peru 2004-2011]. / Traumatismo encefalocraneano en niños atendidos en un hospital nacional de Lima, Perú 2004-2011.

In order to describe the characteristics of traumatic brain injury (TEC) in children seen at the Cayetano Heredia National Hospital from 2004 to 2011, a case study was conducted. 316, 14 year-old minors were included, the median age was 4 ± 3 years old. 63.9% were male. The main causes of TEC were falls (80.1%) and car accidents (10.4%). 42.4% (134/316) occurred in the afternoon. There was a higher incidence of falls at home (59.2%). The epidural hematoma (26.9%) was the most common intracraneal injury. Intensive care management and neurosurgical interventions were required in 15.8 and 14.2% of cases respectively. It is concluded that domestic falls were the main cause of accidents for TEC and epidural hematoma the most common intracranial injury where children under 5 were the most affected.