Results 21 to 30 of about 73,544 (253)

The neurotoxicity of DOPAL: behavioral and stereological evidence for its role in Parkinson disease pathogenesis. [PDF]

PLoS ONE, 2010
BACKGROUND: The etiology of Parkinson disease (PD) has yet to be fully elucidated. We examined the consequences of injections of 3,4-dihydroxyphenylacetaldehyde (DOPAL), a toxic metabolite of dopamine, into the substantia nigra of rats on motor behavior ...
W Michael Panneton, V B Kumar, Qi Gan, William J Burke, James E Galvin   +4 more
doaj   +1 more source

Eyes as Gateways for Environmental Light to the Substantia Nigra: Relevance in Parkinson’s Disease

The Scientific World Journal, 2014
Recent data indicates that prolonged bright light exposure of rats induces production of neuromelanin and reduction of tyrosine hydroxylase positive neurons in the substantia nigra. This effect was the result of direct light reaching the substantia nigra
Stefania Romeo, Daniela Di Camillo, Alessandra Splendiani, Marta Capannolo, Cristina Rocchi, Gabriella Aloisi, Irene Fasciani, Giovanni U. Corsini, Eugenio Scarnati, Luca Lozzi, Roberto Maggio   +10 more
doaj   +1 more source

Don't die like me: Which proteins are responsible for the selective neuronal vulnerability within the substantia nigra?

PLoS ONE
A hallmark of Parkinson's disease is the specific degeneration of dopaminergic neurons in the substantia nigra pars compacta. Interestingly, not all of these neurons are affected to the same extent.
Simone Steinbach, Mariana Molina, Lea T Grinberg, Luisa Aring, Annika Guntermann, Katrin Marcus, Helmut Heinsen, Renata E Paraizo Leite, Caroline May   +8 more
doaj   +1 more source

Signal alterations of the basal ganglia in the differential diagnosis of Parkinson’s disease: a retrospective case-controlled MRI data bank analysis

BMC Neurology, 2012
Background Based upon the acquainted loss of dopaminergic neurons in the substantia nigra in Parkinson’s disease (PD), we hypothesised changes in magnetic resonance imaging signal intensities of the basal ganglia to be useful as an additional technical ...
Jesse Sarah, Kassubek Jan, Müller Hans-Peter, Ludolph Albert C, Unrath Alexander   +4 more
doaj   +1 more source

Prodromal Lewy Body Disorder Features in REM Sleep Behavior Disorder With Biomarker‐Defined Synucleinopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Isolated rapid eye movement sleep behavior disorder (iRBD) is a prodromal state for Lewy body disorders and exhibits biological heterogeneity that may influence clinical expression and progression. We examined clinical features in individuals with iRBD and biomarker‐defined synucleinopathy.
Daniel Weintraub, Michele K. York, Roseanne Dobkin, Anuprita R. Nair, Ryan Kurth, David‐Erick Lafontant, Chelsea Caspell‐Garcia, Roy N. Alcalay, Ethan G. Brown, Lana M. Chahine, Christopher Coffey, Tatiana Foroud, Douglas Galasko, Karl Kieburtz, Kenneth Marek, Kalpana Merchant, Brit Mollenhauer, Kathleen L. Poston, Andrew Siderowf, Cristina Simonet, Tanya Simuni, Caroline M. Tanner, Thomas F. Tropea, Aleksandar Videnovic, The Parkinson's Progression Markers Initiative   +24 more
wiley   +1 more source

Distribution and Modulation of Histamine H3 Receptors in Basal Ganglia and Frontal Cortex of Healthy Controls and Patients with Parkinson's Disease

Neurobiology of Disease, 2001
Parkinson's disease (PD) is a brain degenerative disorder with unknown etiology, and specific degeneration of mesencephalic dopaminergic cells is a morphological manifestation of the disease. The central histaminergic system appears to be activated in PD,
Oleg V. Anichtchik, Nina Peitsaro, Juha O. Rinne, Hannu Kalimo, Pertti Panula   +4 more
doaj   +1 more source

Sex‐Stratified Association of Regional Dopamine Transporter Binding With Disease Progression in Amyotrophic Lateral Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To clarify the clinical relevance of dopamine transporter single‐photon emission computed tomography (DAT‐SPECT) abnormalities in amyotrophic lateral sclerosis (ALS), with a prespecified focus on sex‐stratified associations with disease progression and short‐term prognosis.
Tomoya Kawazoe, Keizo Sugaya, Kentaro Hayashi, Keiko Hino, Yasuhiro Nakata, Kota Bokuda, Toshio Shimizu, Kazushi Takahashi   +7 more
wiley   +1 more source

Temporal Interference Stimulation of Centromedian‐Parafascicular Complex in Disorders of Consciousness: A Pilot Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Treatment of disorders of consciousness (DoC) remains a major clinical challenge, and noninvasive, targeted modulation of deep brain structures has emerged as a promising therapeutic strategy. We aimed to evaluate the feasibility/safety and preliminary effects of thalamic temporal interference stimulation (TIS) targeting centromedian‐
Gengyao Hu, Changgeng Song, Dianwei Wu, Xiaoqian Niu, Jianmin Hao, Lijuan Liu, Xiaogang Kang, Wen Jiang   +7 more
wiley   +1 more source

Subjective Cognitive Concerns and Cognitive Trajectories in Parkinson's Disease: Biomarker Impact

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To examine the relationship of subjective cognitive concerns (SCC) with biomarkers of Alzheimer's disease (AD), neurodegeneration, and Parkinson's disease (PD) and domain‐specific cognitive trajectories among cognitively unimpaired persons with de novo PD. Method Cognitively unimpaired participants with SCC (n = 294) and without SCC (
Francesca V. Lopez, Fareshte Erani, Katherine J. Bangen, David G. Coughlin, Douglas Galasko, Kelsey R. Thomas   +5 more
wiley   +1 more source

A Direct Cortico-Nigral Pathway as Revealed by Constrained Spherical Deconvolution Tractography in Humans

Frontiers in Human Neuroscience, 2016
Substantia nigra is an important neuronal structure, located in the ventral midbrain, that exerts a regulatory function within the basal ganglia circuitry through the nigro-striatal pathway.
Alberto Cacciola, Demetrio Milardi, Demetrio Milardi, Giuseppe Pio Anastasi, Gianpaolo Antonio Basile, Pietro Ciolli, Mariangela Irrera, Giuseppina Cutroneo, Daniele Bruschetta, Giuseppina Rizzo, Stefania Mondello, Placido Bramanti, Angelo Quartarone, Angelo Quartarone   +13 more
doaj   +1 more source