The symptoms asymmetry of drug-induced parkinsonism is not related to nigrostriatal cell degeneration: a SPECT-DaTSCAN study.

CONCLUSIONS: Our results have not confirmed the presence of a presynaptic nigrostriatal deficit which could be related to asymmetry of DIP. The factors responsible for the asymmetry of DIP symptoms should be sought in the postsynaptic part of the nigrostriatal dopaminergic system. PMID: 31441498 [PubMed - as supplied by publisher]
Source: Neurologia i Neurochirurgia Polska - Category: Neurology Authors: Tags: Neurol Neurochir Pol Source Type: research

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ConclusionDAT-SPECT is established for differentiating degenerative from non-degenerative parkinsonism. For further differentiation within neurodegenerative Parkinsonian syndromes, DAT-PET has essential benefits. Nowadays, because of wider availability of PET systems and radioligand production centers, and the possibility to use simplified quantification methods, DAT-PET imaging is feasible for clinical use. Therefore, DAT-PET needs to be considered for a more active role in the clinic to take a step forward to a more comprehensive understanding and assessment of Parkinson ’s disease.
Source: Clinical and Translational Imaging - Category: Radiology Source Type: research
We describe the extrastriatal accumulation of dopamine transporter imaging agent 99mTc-TRODAT in the peri-infarct area in a 75-year-old man referred for dopamine transporter SPECT imaging with a suspicion of idiopathic Parkinson disease.
Source: Clinical Nuclear Medicine - Category: Nuclear Medicine Tags: Interesting Images Source Type: research
Authors: Nishida H, Hayashi Y, Kobayashi M, Sakurai T Abstract A 70-year-old dextral woman was admitted to a hospital with agraphia for kanji (Japanese morphograms). She had a history of severe constipation, nightmares, and visual hallucinations. Neurological examinations revealed no obvious Parkinson's disease symptoms. She showed poor skills in writing the kanji for looking at picture objects, [e.g. writing the Japanese word "inu" (which means dog) when she saw a drawing of a dog] or dictated words. A reduced striatal uptake of FP-CIT on single-photon-emission computed tomography and reduced MIBG cardia...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
ute;rriz JM Abstract Finding new biomarkers to model Parkinson's Disease (PD) is a challenge not only to help discerning between Healthy Control (HC) subjects and patients with potential PD but also as a way to measure quantitatively the loss of dopaminergic neurons mainly concentrated at substantia nigra. Within this context, this work presented here tries to provide a set of imaging features based on morphological characteristics extracted from I[Formula: see text]-Ioflupane SPECT scans to discern between HC and PD participants in a balanced set of [Formula: see text] scans from Parkinson's Progression Markers I...
Source: International Journal of Neural Systems - Category: Neurology Authors: Tags: Int J Neural Syst Source Type: research
An artificial intelligence (AI) algorithm was highly accurate for diagnosing...Read more on AuntMinnie.comRelated Reading: SNMMI offers patient video on DaT SPECT exams DWI-MRI shows vision changes could predict Parkinson's DTI-MRI sheds light on Parkinson's disease
Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news
Neuropathological data and nuclear medicine imaging show extensive serotonergic impairment in Parkinson's disease (PD) and atypical parkinsonian syndromes (APS). The study aims at performing a case-controlled region-of-interest (ROI)-based analysis of 123I –N-ω-fluoropropyl-2β-carbomethoxy-3β-(4-iodophenyl) nortropane (123I-FP-CIT) images to measure extrastriatal regional deficits in PD and APS, and assess their added diagnostic value in discriminating degenerative parkinsonisms from other conditions.
Source: Parkinsonism and Related Disorders - Category: Neurology Authors: Source Type: research
Abstract BACKGROUND: The current lack of effective treatments for Alzheimer's disease (AD) and the rapidly increasing burden of the disease highlight the urgent need to find new treatments. Despite accumulating evidence of the beneficial effects of rasagiline in neurodegenerative diseases such as Parkinson's disease, the effects of rasagiline on the brains of patients with AD have not been elucidated. PURPOSE: To examine the effects of rasagiline on regional cerebral flow (rCBF) in patients with AD using single photon emission computed tomography (SPECT). MATERIAL AND METHODS: Among 22 patients with AD, ...
Source: Acta Radiologica - Category: Radiology Authors: Tags: Acta Radiol Source Type: research
Parkinson's Disease (PD) is a common neurodegenerative disorder, characterized by a progressive loss of dopaminergic neurons and whose cause remains unclear. Brain-Derived Neurotrophic factor (BDNF) is a protein involved in dopaminergic cells survival. Previous studies have shown decreased serum BDNF levels in PD patients.
Source: Parkinsonism and Related Disorders - Category: Neurology Authors: Source Type: research
It has been reported that early onset Parkinson's Disease (PD) patients have a less profound dopaminergic degeneration. The aim of the current study was to determine whether there are longitudinal differences in dopaminergic denervation [signal reduction in 123I-FP-CIT SPECT] in early versus mid and late onset PD.
Source: Parkinsonism and Related Disorders - Category: Neurology Authors: Source Type: research
Neuropathological data and nuclear medicine imaging show extensive serotonergic impairment in Parkinson ’s disease (PD). We undertook a case-controlled analysis of 123I-FP-CIT SPECT images to measure extrastriatal...
Source: BMC Neurology - Category: Neurology Authors: Tags: Research article Source Type: research
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