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Articles 1 - 6 of 6
Full-Text Articles in Molecular and Cellular Neuroscience
Towards A Unified Disease Mechanism For Trna Synthetase-Mediated Peripheral Neuropathy, Emily L. Spaulding
Towards A Unified Disease Mechanism For Trna Synthetase-Mediated Peripheral Neuropathy, Emily L. Spaulding
Electronic Theses and Dissertations
Charcot-Marie-Tooth disease (CMT) is a debilitating inherited peripheral neuropathy resulting in progressive distal muscle atrophy and loss of sensation. CMT is genetically heterogeneous, with mutations in over 80 different genes leading to demyelinating or axonal forms. There are genetically similar subgroups, including the largest protein family implicated in the disease, the tRNA synthetases (ARSs). ARSs are responsible for aminoacylation of tRNAs during translation and are therefore ubiquitously expressed and essential proteins. Dominant mutations in at least five ARSs cause axonal forms of CMT. How mutations in ARSs cause CMT is unclear, however, the similar clinical presentation of patients suggests shared …
Nanomedicine-Driven Neuropathic Pain Relief In Rat Model Is Associated With Macrophage Polarity And Mast Cell Activation, Muzamil Saleem
Nanomedicine-Driven Neuropathic Pain Relief In Rat Model Is Associated With Macrophage Polarity And Mast Cell Activation, Muzamil Saleem
Electronic Theses and Dissertations
We explored the immune neuropathology underlying multi-day relief from neuropathic pain in a rat model initiated at the sciatic nerve by using a nanoemulsion-based nanomedicine as a biological probe. The nanomedicine is theranostic: both therapeutic (containing celecoxib drug) and diagnostic (containing near-infrared fluorescent (NIRF) dye) and is small enough to be phagocytosed by circulating monocytes. A model of neuropathic pain is initiated by tying four 1mm spaced knots around the sciatic nerve with chromic gut suture, which results in neuroinflammation, and a resultant pain-like behavior manifests. We show that pain-like behavior reaches a plateau of maximum hypersensitivity 8 days post-surgery, …
Understanding Object Motion Encoding In The Mammalian Retina., Victor Julian Depiero
Understanding Object Motion Encoding In The Mammalian Retina., Victor Julian Depiero
Electronic Theses and Dissertations
Phototransduction, transmission of visual information down the optic nerve incurs delays on the order of 50 – 100ms. This implies that the neuronal representation of a moving object should lag behind the object’s actual position. However, studies have demonstrated that the visual system compensates for neuronal delays using a predictive mechanism called phase advancing, which shifts the population response toward the leading edge of a moving object’s retinal image. To understand how this compensation is achieved in the retina, I investigated cellular and synaptic mechanisms that drive phase advancing. I used three approaches, each testing phase advancing at a …
Glycine Receptor Expression Across Identified Retinal Ganglion Cell Types., Ian Scot Pyle
Glycine Receptor Expression Across Identified Retinal Ganglion Cell Types., Ian Scot Pyle
Electronic Theses and Dissertations
Retinal ganglion cells (RGCs) represent the culmination of all retinal signaling and their output forms the substrate for vision throughout the rest of the brain. About 40 different RGC types have been defined by differences in their visually evoked responses, morphology, and genetic makeup. These responses arise from interactions between inhibition and excitation throughout the retinal circuit (Franke et al., 2017; Masland, 2012; Sanes & Masland, 2015; Werblin, 2011). Unlike most other areas of the central nervous system (CNS), the retina utilizes both GABA and glycine inhibitory neurotransmitters to refine glutamatergic excitatory signals (Franke & Baden, 2017; Werblin, 2011; C. …
Molecular Basis Of Membrane Pore Formation By Amyloid Beta Peptide, Nabin Kandel
Molecular Basis Of Membrane Pore Formation By Amyloid Beta Peptide, Nabin Kandel
Electronic Theses and Dissertations
Alzheimer's Disease (AD) is a neurodegenerative disorder that affects around 50 million people worldwide and causes cognitive decline, brain atrophy and death. Despite extensive basic and clinical studies and drug development efforts, currently no effective treatments are available for AD. The amyloid β (Aβ) peptide is neurotoxic and is tightly associated with AD pathology, but the molecular mechanism of its action remains unclear. There are various forms of Aβ in the brain, ranging from the full length Aβ1-42 to shorter peptides, such as a strongly toxic Aβ25-35 fragment. The Amyloid Cascade Hypothesis (ACH) postulated that extracellular Aβ deposits cause the …
Behavioral And Molecular Analysis Of Memory In The Dwarf Cuttlefish, Jessica M. Bowers
Behavioral And Molecular Analysis Of Memory In The Dwarf Cuttlefish, Jessica M. Bowers
Electronic Theses and Dissertations
Complex memory has evolved because it benefits animals in all areas of life, such as remembering the location of food or conspecifics, and learning to avoid dangerous stimuli. Advances made by studying relatively simple nervous systems, such as those in gastropod mollusks, can now be used to study mechanisms of memory in more complex systems. Cephalopods offer a unique opportunity to study the mechanisms of memory in a complex invertebrates. The dwarf cuttlefish, Sepia bandensis, is a useful memory model because its fast development and small size allows it to be reared and tested in large numbers. However, primary literature …