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CEST imaging combined with H-MRS reveal the neuroprotective effects of riluzole by improving neurotransmitter imbalances in Alzheimer's disease mice.
Alzheimers Res Ther
January 2025
Radiology Department, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China.
Background: The imbalance of glutamate (Glu) and gamma-aminobutyric acid (GABA) neurotransmitter system plays a crucial role in the pathogenesis of Alzheimer's disease (AD). Riluzole is a Glu modulator originally approved for amyotrophic lateral sclerosis that has shown potential neuroprotective effects in various neurodegenerative disorders. However, whether riluzole can improve Glu and GABA homeostasis in AD brain and its related mechanism of action remain unknown.
View Article and Find Full Text PDFBimolecular Fluorescence Complementation (BiFC) Technique for Exocytic Proteins in Murine Hippocampal Neurons.
Methods Mol Biol
January 2025
Institute of Neurophysiology and NeuroCure Cluster of Excellence, Charité Universitätsmedizin Berlin, Berlin, Germany.
The bimolecular fluorescence complementation (BiFC) technique is a powerful tool for visualizing protein-protein interactions in vivo. It involves genetically fused nonfluorescent fragments of green fluorescent protein (GFP) or its variants to the target proteins of interest. When these proteins interact, the GFP fragments come together, resulting in the reconstitution of a functional fluorescent protein complex that can be observed using fluorescence microscopy.
View Article and Find Full Text PDFMolecular Dynamics Simulations of the SNARE Complex Interacting with Synaptotagmin, Complexin, and Lipid Bilayers.
Methods Mol Biol
January 2025
Departments of Neurology, and Anatomy and Cell Biology, Wayne State University School of Medicine, University Health Center, Detroit, MI, USA.
Molecular dynamics (MD) simulations enable in silico investigation of the dynamic behavior of proteins and protein complexes. Here, we describe MD simulations of the SNARE bundle forming the complex with the neuronal proteins Synaptotagmin-1 (Syt1) and Complexin (Cpx). Syt1 is the synaptic vesicle (SV) protein that serves as the neuronal calcium sensor and triggers synaptic fusion upon calcium binding, and this process is promoted and accelerated by Cpx.
View Article and Find Full Text PDFE3 ubiquitin ligase CHIP facilitates cAMP and cGMP signalling cross-talk by polyubiquitinating PDE9A.
EMBO J
January 2025
Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, Henan, China.
The carboxyl terminus of Hsc70-interacting protein (CHIP) is pivotal for managing misfolded and aggregated proteins via chaperone networks and degradation pathways. In a preclinical rodent model of CHIP-related ataxia, we observed that CHIP mutations lead to increased levels of phosphodiesterase 9A (PDE9A), whose role in this context remains poorly understood. Here, we investigated the molecular mechanisms underlying the role of PDE9A in CHIP-related ataxia and demonstrated that CHIP binds to PDE9A, facilitating its polyubiquitination and autophagic degradation.
View Article and Find Full Text PDFBasal forebrain innervation of the amygdala: an anatomical and computational exploration.
Brain Struct Funct
January 2025
Behavioral Neuroscience Laboratory, Department of Psychology, Boğaziçi University, Bebek, 34342, Istanbul, Turkey.
Theta oscillations of the mammalian amygdala are associated with processing, encoding and retrieval of aversive memories. In the hippocampus, the power of the network theta oscillation is modulated by basal forebrain (BF) GABAergic projections. Here, we combine anatomical and computational approaches to investigate if similar BF projections to the amygdaloid complex provide an analogous modulation of local network activity.
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