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Articles 481 - 487 of 487
Full-Text Articles in Medicine and Health Sciences
Chronic Apocynin Treatment Attenuates Beta Amyloid Plaque Size And Microglial Number In Happ(751)Sl Mice, Melinda E. Lull, Shannon Levesque, Michael J. Surace, Michelle L. Block
Chronic Apocynin Treatment Attenuates Beta Amyloid Plaque Size And Microglial Number In Happ(751)Sl Mice, Melinda E. Lull, Shannon Levesque, Michael J. Surace, Michelle L. Block
Anatomy and Neurobiology Publications
Background
NADPH oxidase is implicated in neurotoxic microglial activation and the progressive nature of Alzheimer's Disease (AD). Here, we test the ability of two NADPH oxidase inhibitors, apocynin and dextromethorphan (DM), to reduce learning deficits and neuropathology in transgenic mice overexpressing human amyloid precursor protein with the Swedish and London mutations (hAPP(751)SL).
Methods
Four month old hAPP(751)SL mice were treated daily with saline, 15 mg/kg DM, 7.5 mg/kg DM, or 10 mg/kg apocynin by gavage for four months.
Results
Only hAPP(751)SL mice treated with apocynin showed reduced plaque size and a reduction in the number of cortical microglia, when compared …
Development Of Melanopsin-Based Irradiance Detecting Circuitry, David S. Mcneill, Catherine J. Sheely, Jennifer L. Ecker, Tudor C. Badea, Duncan Morhardt, William Guido, Samer Hattar
Development Of Melanopsin-Based Irradiance Detecting Circuitry, David S. Mcneill, Catherine J. Sheely, Jennifer L. Ecker, Tudor C. Badea, Duncan Morhardt, William Guido, Samer Hattar
Anatomy and Neurobiology Publications
Background
Most retinal ganglion cells (RGCs) convey contrast and motion information to visual brain centers. Approximately 2% of RGCs are intrinsically photosensitive (ipRGCs), express melanopsin and are necessary for light to modulate specific physiological processes in mice. The ipRGCs directly target the suprachiasmatic nucleus (SCN) to photoentrain circadian rhythms, and the olivary pretectal nucleus (OPN) to mediate the pupillary light response. How and when this ipRGC circuitry develops is unknown.
Results
Here, we show that some ipRGCs follow a delayed developmental time course relative to other image-forming RGCs. Specifically, ipRGC neurogenesis extends beyond that of other RGCs, and ipRGCs begin …
Identification And Characterization Of Prevotella Intermedia 17 Toll-Like Receptor 2 Ligands, Jamie Feng-Hsia Yuan
Identification And Characterization Of Prevotella Intermedia 17 Toll-Like Receptor 2 Ligands, Jamie Feng-Hsia Yuan
Theses and Dissertations
Periodontal disease is one of the most prevalent human diseases affecting millions of individuals. Bacteria are the trigger of the host response that then results in initiation and progression of periodontal disease. The interactions between the host and the bacteria, although very complex and intricate, are not well understood. Species of gram-negative anaerobic bacteria implicated in the development of periodontal disease include Porphyromonas gingivalis and Prevotella intermedia. The goal of our study was to identify P. intermedia surface proteins interacting with TLR2 receptor. Using Cy5-labeled surface proteins we identified multiple proteins using our capture assay. The interaction of three …
Nadph Oxidase As A Therapeutic Target In Alzheimer's Disease, Michelle L. Block
Nadph Oxidase As A Therapeutic Target In Alzheimer's Disease, Michelle L. Block
Anatomy and Neurobiology Publications
At present, available treatments for Alzheimer's disease (AD) are largely unable to halt disease progression. Microglia, the resident macrophages in the brain, are strongly implicated in the pathology and progressively degenerative nature of AD. Specifically, microglia are activated in response to both β amyloid (Aβ) and neuronal damage, and can become a chronic source of neurotoxic cytokines and reactive oxygen species (ROS). NADPH oxidase is a multi-subunit enzyme complex responsible for the production of both extracellular and intracellular ROS by microglia. Importantly, NADPH oxidase expression is upregulated in AD and is an essential component of microglia-mediated Aβ neurotoxicity. Activation of …
A Synaptic Nidogen: Developmental Regulation And Role Of Nidogen-2 At The Neuromuscular Junction, Michael A. Fox, Matthew Sp Ho, Neil Smyth, Joshua R. Sanes
A Synaptic Nidogen: Developmental Regulation And Role Of Nidogen-2 At The Neuromuscular Junction, Michael A. Fox, Matthew Sp Ho, Neil Smyth, Joshua R. Sanes
Anatomy and Neurobiology Publications
Background
The skeletal neuromuscular junction is a useful model for elucidating mechanisms that regulate synaptogenesis. Developmentally important intercellular interactions at the neuromuscular junction are mediated by the synaptic portion of a basal lamina that completely ensheaths each muscle fiber. Basal laminas in general are composed of four main types of glycosylated proteins: laminins, collagens IV, heparan sulfate proteoglycans and nidogens (entactins). The portion of the muscle fiber basal lamina that passes between the motor nerve terminal and postsynaptic membrane has been shown to bear distinct isoforms of the first three of these. For laminins and collagens IV, the proteins are …
Arabidopsis Mrna Polyadenylation Machinery: Comprehensive Analysis Of Protein-Protein Interactions And Gene Expression Profiling, Arthur G. Hunt, Ruqiang Xu, Balasubrahmanyam Addepalli, Suryadevara Rao, Kevin P. Forbes, Lisa R. Meeks, Denghui Xing, Min Mo, Hongwei Zhao, Amrita Bandyopadhyay, Lavanya Dampanaboina, Amanda Marion, Carol Von Lanken, Qingshun Quinn Li
Arabidopsis Mrna Polyadenylation Machinery: Comprehensive Analysis Of Protein-Protein Interactions And Gene Expression Profiling, Arthur G. Hunt, Ruqiang Xu, Balasubrahmanyam Addepalli, Suryadevara Rao, Kevin P. Forbes, Lisa R. Meeks, Denghui Xing, Min Mo, Hongwei Zhao, Amrita Bandyopadhyay, Lavanya Dampanaboina, Amanda Marion, Carol Von Lanken, Qingshun Quinn Li
Anatomy and Neurobiology Publications
Background
The polyadenylation of mRNA is one of the critical processing steps during expression of almost all eukaryotic genes. It is tightly integrated with transcription, particularly its termination, as well as other RNA processing events, i.e. capping and splicing. The poly(A) tail protects the mRNA from unregulated degradation, and it is required for nuclear export and translation initiation. In recent years, it has been demonstrated that the polyadenylation process is also involved in the regulation of gene expression. The polyadenylation process requires two components, the cis-elements on the mRNA and a group of protein factors that recognize the cis …
Protocol: Streamline Cloning Of Genes Into Binary Vectors In Agrobacterium Via The Gateway® Topo Vector System, Ruqiang Xu, Qingshun Quinn Li
Protocol: Streamline Cloning Of Genes Into Binary Vectors In Agrobacterium Via The Gateway® Topo Vector System, Ruqiang Xu, Qingshun Quinn Li
Anatomy and Neurobiology Publications
Background
In plant functional genomic studies, gene cloning into binary vectors for plant transformation is a routine procedure. Traditionally, gene cloning has relied on restriction enzyme digestion and ligation. In recent years, however, Gateway® cloning technology (Invitrogen Co.) has developed a fast and reliable alternative cloning methodology which uses a phage recombination strategy. While many Gateway- compatible vectors are available, we frequently encounter problems in which antibiotic resistance genes for bacterial selection are the same between recombinant vectors. Under these conditions, it is difficult, if not sometimes impossible, to use antibiotic resistance in selecting the desired transformants. We have, …