Results 81 to 90 of about 555,224 (393)

CSF Levels of NPTX2 Are Associated With Less Brain Atrophy Over Time in Cognitively Unimpaired Individuals

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Neuronal pentraxin 2 (NPTX2) is a synaptic protein involved in synaptic plasticity and regulation of neuronal excitability. Lower baseline cerebrospinal fluid (CSF) NPTX2 levels have been shown to be associated with an earlier onset of mild cognitive impairment (MCI), a pre‐dementia syndrome, even after CSF Alzheimer's Disease (AD)
Juan P. Vazquez   +12 more
wiley   +1 more source

Decreased Serum 5‐HT: Clinical Correlates and Regulatory Role in NMJ of MG

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Although 5‐Hydroxytryptamine (5‐HT) indirectly stimulates muscle contraction and participates in regulating Acetylcholine receptor (AChR) cluster homeostasis in cellular, animal, and clinical studies, evidence regarding its potential to modulate muscle contraction in myasthenia gravis (MG) remains limited.
Xinru Shen   +18 more
wiley   +1 more source

Brain-derived synaptic vesicles have an intrinsic ability to sequester tubulin

open access: yesBMC Biology
Background The presence and function of microtubules within the synaptic bouton has long been under investigation. In recent years, evidence has accumulated that connects the synaptic vesicle cluster to the local dynamics of microtubule ends. Nonetheless,
Tiago Mimoso   +6 more
doaj   +1 more source

A Mathematical Model of Tripartite Synapse: Astrocyte Induced Synaptic Plasticity

open access: yes, 2012
In this paper we present a biologically detailed mathematical model of tripartite synapses, where astrocytes modulate short-term synaptic plasticity. The model consists of a pre-synaptic bouton, a post-synaptic dendritic spine-head, a synaptic cleft and ...
Majumdar, Kaushik, Tewari, Shivendra
core   +1 more source

Aberrant lysosomal carbohydrate storage accompanies endocytic defects and neurodegeneration in Drosophila benchwarmer [PDF]

open access: yes, 2005
Lysosomal storage is the most common cause of neurodegenerative brain disease in preadulthood. However, the underlying cellular mechanisms that lead to neuronal dysfunction are unknown.
Bellen, Hugo J   +7 more
core   +3 more sources

The Role of Mitochondrially Derived ATP in Synaptic Vesicle Recycling*♦

open access: yesJournal of Biological Chemistry, 2015
Background: The ATP requirements of synaptic vesicle release are poorly understood. Results: Mitochondrially derived ATP supports the function of boutons with and without mitochondria.
D. Pathak   +9 more
semanticscholar   +1 more source

Insights Into the Antigenic Repertoire of Unclassified Synaptic Antibodies

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective We sought to characterize the sixth most common finding in our neuroimmunological laboratory practice (tissue assay‐observed unclassified neural antibodies [UNAs]), combining protein microarray and phage immunoprecipitation sequencing (PhIP‐Seq). Methods Patient specimens (258; 133 serums; 125 CSF) meeting UNA criteria were profiled;
Michael Gilligan   +22 more
wiley   +1 more source

The Structural Basis of Long-Term Potentiation in Hippocampal Synapses, Revealed by Electron Microscopy Imaging of Lanthanum-Induced Synaptic Vesicle Recycling

open access: yesFrontiers in Cellular Neuroscience, 2022
Hippocampal neurons in dissociated cell cultures were exposed to the trivalent cation lanthanum for short periods (15–30 min) and prepared for electron microscopy (EM), to evaluate the stimulatory effects of this cation on synaptic ultrastructure.
John E. Heuser
doaj   +1 more source

CASK regulates CaMKII autophosphorylation in neuronal growth, calcium signaling, and learning [PDF]

open access: yes, 2013
Calcium (Ca2+)/calmodulin (CaM)-dependent kinase II (CaMKII) activity plays a fundamental role in learning and memory. A key feature of CaMKII in memory formation is its ability to be regulated by autophosphorylation, which switches its activity on and ...
Gillespie, John M, Hodge, James J L
core   +3 more sources

Synaptic vesicle release regulates the number of myelin sheaths made by individual oligodendrocytes in vivo

open access: yesNature Neuroscience, 2015
The myelination of axons by oligodendrocytes profoundly affects central nervous system function, but how this is regulated by neuronal activity in vivo is not known.
Sigrid Mensch   +6 more
semanticscholar   +1 more source

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