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Holmes’ tremor as a delayed complication of thalamic stroke
We present a 75-year-old man who developed a disabling tremor 1year after a posterolateral thalamic stroke. This tremor had low frequency (3–4Hz), did not disappear on focus and was exacerbated by maintaining a static posture and on target pursuit, which made it very difficult to perform basic functions. MRI demonstrated an old ischemic lesion at the left posterolateral thalamus. Treatment with levodopa led to symptom control. Lesions in the midbrain, cerebellum and thalamus may cause Holmes’ tremor. Delayed onset of symptoms is usually seen, sometimes appearing 2years after the original injury. This may be due to matu...
Source: Journal of Clinical Neuroscience - November 21, 2015 Category: Neuroscience Source Type: research

Reduction of rat brain CD8+ T‐cells by levodopa/benserazide treatment after experimental stroke
This study was conducted to investigate if treatment with levodopa, potentially acting as an immunomodulator, affects the T‐cell accumulation in the post‐ischemic brain. Male Sprague–Dawley rats were subjected to transient occlusion of the middle cerebral artery (tMCAO) for 105 min followed by levodopa/benserazide treatment (20 mg/kg/15 mg/kg) for 5 days initiated on day 2 post‐stroke. One week after tMCAO, T‐cell populations were analysed from brains, and levels of interleukin (IL)‐1β, chemokine (C‐X‐C motif) ligand 1, IL‐4, IL‐5, interferon gamma and IL‐13 were analysed. After levodopa/benseraz...
Source: European Journal of Neuroscience - April 1, 2014 Category: Neuroscience Authors: Enida Kuric, Karsten Ruscher Tags: Research Report Source Type: research

Sensory Re-weighting for Postural Control in Parkinson ’s Disease
In this study, we focused primarily on the change of sensory weighting parameters when sensory conditions change. We also tested the additional hypothesis that levodopa medication would improve sensory weighting for postural control. Materials and Methods Subjects The Institutional Review Board at Oregon Health and Science University (OHSU) approved the protocol for this experiment, and all subjects gave informed consent prior to participating. Eight subjects with PD (three female) and eight healthy, age-matched controls (two female) were recruited from the Balance Disorders Laboratory database and the Parkinson’...
Source: Frontiers in Human Neuroscience - April 16, 2019 Category: Neuroscience Source Type: research