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Articles 91 - 99 of 99
Full-Text Articles in Neurology
Ferritin Levels In The Cerebrospinal Fluid Predict Alzheimer's Disease Outcomes And Are Regulated By Apoe, Scott Ayton, Noel G. Faux, Ashley I. Bush, Charles D. Smith, Greg A. Jicha, Peter A. Hardy, Partha Sinha, Elizabeth Oates, Gary Conrad, Alzheimer's Disease Neuroimaging Initiative
Ferritin Levels In The Cerebrospinal Fluid Predict Alzheimer's Disease Outcomes And Are Regulated By Apoe, Scott Ayton, Noel G. Faux, Ashley I. Bush, Charles D. Smith, Greg A. Jicha, Peter A. Hardy, Partha Sinha, Elizabeth Oates, Gary Conrad, Alzheimer's Disease Neuroimaging Initiative
Neurology Faculty Publications
Brain iron elevation is implicated in Alzheimer's disease (AD) pathogenesis, but the impact of iron on disease outcomes has not been previously explored in a longitudinal study. Ferritin is the major iron storage protein of the body; by using cerebrospinal fluid (CSF) levels of ferritin as an index, we explored whether brain iron status impacts longitudinal outcomes in the Alzheimer's Disease Neuroimaging Initiative (ADNI) cohort. We show that baseline CSF ferritin levels were negatively associated with cognitive performance over 7 years in 91 cognitively normal, 144 mild cognitive impairment (MCI) and 67 AD subjects, and predicted MCI conversion to AD. …
Targeting Human Central Nervous System Protein Kinases: An Isoform Selective P38Αmapk Inhibitor That Attenuates Disease Progression In Alzheimer's Disease Mouse Models, Saktimayee M. Roy, Valerie L. Grum-Tokars, James P. Schavocky, Faisal Saeed, Agnieszka Staniszewski, Andrew F. Teich, Ottavio Arancio, Adam D. Bachstetter, Scott J. Webster, Linda J. Van Eldik, George Minasov, Wayne F. Anderson, Jeffrey C. Pelletier, D. Martin Watterson
Targeting Human Central Nervous System Protein Kinases: An Isoform Selective P38Αmapk Inhibitor That Attenuates Disease Progression In Alzheimer's Disease Mouse Models, Saktimayee M. Roy, Valerie L. Grum-Tokars, James P. Schavocky, Faisal Saeed, Agnieszka Staniszewski, Andrew F. Teich, Ottavio Arancio, Adam D. Bachstetter, Scott J. Webster, Linda J. Van Eldik, George Minasov, Wayne F. Anderson, Jeffrey C. Pelletier, D. Martin Watterson
Spinal Cord and Brain Injury Research Center Faculty Publications
The first kinase inhibitor drug approval in 2001 initiated a remarkable decade of tyrosine kinase inhibitor drugs for oncology indications, but a void exists for serine/threonine protein kinase inhibitor drugs and central nervous system indications. Stress kinases are of special interest in neurological and neuropsychiatric disorders due to their involvement in synaptic dysfunction and complex disease susceptibility. Clinical and preclinical evidence implicates the stress related kinase p38αMAPK as a potential neurotherapeutic target, but isoform selective p38αMAPK inhibitor candidates are lacking and the mixed kinase inhibitor drugs that are promising in peripheral tissue disease indications have limitations for neurologic indications. Therefore, …
Immunotherapy In Combination With Behavioral Enrichment In A Canine Model Of Aging, Paulina R. Davis
Immunotherapy In Combination With Behavioral Enrichment In A Canine Model Of Aging, Paulina R. Davis
Theses and Dissertations--Pharmacology and Nutritional Sciences
Alzheimer’s disease (AD) is characterized by cognitive decline and hallmark neuropathology, including β-amyloid (Aβ). Therapeutic strategies for AD are focusing on reducing Aβ. Canines develop Aβ neuropathology and cognitive decline with age similar to AD patients. In previous studies, immunization with Aβ1-42 (VAC) in aged canines decreased brain Aβ but did not improve cognition. Behavioral enrichment (ENR) improved cognition without reducing brain Aβ. We hypothesized that VAC combined with ENR would provide cognitive benefits and reduce Aβ neuropathology, as compared individual VAC and ENR treatments. Aged beagles were placed into groups: control, VAC with fibrillar Aβ1-42, ENR, and combination treatment …
Neuroangiogenesis: A Vascular Basis For Alzheimer's Disease And Cognitive Decline During Aging, Charles T. Ambrose
Neuroangiogenesis: A Vascular Basis For Alzheimer's Disease And Cognitive Decline During Aging, Charles T. Ambrose
Microbiology, Immunology, and Molecular Genetics Faculty Publications
Angiogenesis directs development of the brain's microcirculation during antenatal and postnatal development, but its role later in life is less well recognized. I contend that during senescence a reduced cerebral capillary density accounts in part for the vascular cognitive impairment observed in many older persons and possibly for some forms of Alzheimer's disease. I propose that neuroangiogenesis is essential throughout adult life for maintaining the microcirculation of the cerebral cortex and elsewhere in the brain and that it commonly declines with old age. To support this hypothesis I have examined the neurological literature for relevant studies on cerebral capillary density …
White Matter Diffusion Alterations In Normal Women At Risk Of Alzheimer's Disease, Charles D. Smith, Himachandra Chebrolu, Anders H. Andersen, David A. Powell, Mark A. Lovell, Shuling Xiong, Brian T. Gold
White Matter Diffusion Alterations In Normal Women At Risk Of Alzheimer's Disease, Charles D. Smith, Himachandra Chebrolu, Anders H. Andersen, David A. Powell, Mark A. Lovell, Shuling Xiong, Brian T. Gold
Neurology Faculty Publications
Increased white matter mean diffusivity and decreased fractional anisotropy (FA) has been observed in subjects diagnosed with mild cognitive impairment (MCI) and Alzheimer's disease (AD). We sought to determine whether similar alterations of white matter occur in normal individuals at risk of AD. Diffusion tensor images were acquired in 42 cognitively normal right-handed women with both a family history of dementia and at least one apolipoprotein E4 allele. These were compared with images from 23 normal women without either AD risk factor. Group analyses were performed using tract-based spatial statistics. Reduced FA was observed in the fronto-occipital and inferior temporal …
Molecular Cross Talk Between Misfolded Proteins In Animal Models Of Alzheimer's And Prion Diseases, Rodrigo Morales, Lisbell D Estrada, Rodrigo Diaz-Espinoza, Diego Morales-Scheihing, Maria C Jara, Joaquin Castilla, Claudio Soto
Molecular Cross Talk Between Misfolded Proteins In Animal Models Of Alzheimer's And Prion Diseases, Rodrigo Morales, Lisbell D Estrada, Rodrigo Diaz-Espinoza, Diego Morales-Scheihing, Maria C Jara, Joaquin Castilla, Claudio Soto
Faculty, Staff and Student Publications
The central event in protein misfolding disorders (PMDs) is the accumulation of a misfolded form of a naturally expressed protein. Despite the diversity of clinical symptoms associated with different PMDs, many similarities in their mechanism suggest that distinct pathologies may cross talk at the molecular level. The main goal of this study was to analyze the interaction of the protein misfolding processes implicated in Alzheimer's and prion diseases. For this purpose, we inoculated prions in an Alzheimer's transgenic mouse model that develop typical amyloid plaques and followed the progression of pathological changes over time. Our findings show a dramatic acceleration …
Mitochondrial Mislocalization Underlies Abeta42-Induced Neuronal Dysfunction In A Drosophila Model Of Alzheimer's Disease., Kanae Iijima-Ando, Stephen A Hearn, Christopher Shenton, Anthony Gatt, Lijuan Zhao, Koichi Iijima
Mitochondrial Mislocalization Underlies Abeta42-Induced Neuronal Dysfunction In A Drosophila Model Of Alzheimer's Disease., Kanae Iijima-Ando, Stephen A Hearn, Christopher Shenton, Anthony Gatt, Lijuan Zhao, Koichi Iijima
Department of Biochemistry and Molecular Biology Faculty Papers
The amyloid-beta 42 (Abeta42) is thought to play a central role in the pathogenesis of Alzheimer's disease (AD). However, the molecular mechanisms by which Abeta42 induces neuronal dysfunction and degeneration remain elusive. Mitochondrial dysfunctions are implicated in AD brains. Whether mitochondrial dysfunctions are merely a consequence of AD pathology, or are early seminal events in AD pathogenesis remains to be determined. Here, we show that Abeta42 induces mitochondrial mislocalization, which contributes to Abeta42-induced neuronal dysfunction in a transgenic Drosophila model. In the Abeta42 fly brain, mitochondria were reduced in axons and dendrites, and accumulated in the somata without severe mitochondrial …
Evidence Against Roles For Phorbol Binding Protein Munc13-1, Adam Adaptor Eve-1, Or Vesicle Trafficking Phosphoproteins Munc18 Or Nsf As Phospho-State-Sensitive Modulators Of Phorbol/Pkc-Activated Alzheimer App Ectodomain Shedding., Annat F Ikin, Mirsada Causevic, Steve Pedrini, Lyndsey S Benson, Joseph D Buxbaum, Toshiharu Suzuki, Simon Lovestone, Shigeki Higashiyama, Tomas Mustelin, Robert D Burgoyne, Sam Gandy
Evidence Against Roles For Phorbol Binding Protein Munc13-1, Adam Adaptor Eve-1, Or Vesicle Trafficking Phosphoproteins Munc18 Or Nsf As Phospho-State-Sensitive Modulators Of Phorbol/Pkc-Activated Alzheimer App Ectodomain Shedding., Annat F Ikin, Mirsada Causevic, Steve Pedrini, Lyndsey S Benson, Joseph D Buxbaum, Toshiharu Suzuki, Simon Lovestone, Shigeki Higashiyama, Tomas Mustelin, Robert D Burgoyne, Sam Gandy
Farber Institute for Neuroscience Faculty Papers
ABSTRACT: BACKGROUND: Shedding of the Alzheimer amyloid precursor protein (APP) ectodomain can be accelerated by phorbol esters, compounds that act via protein kinase C (PKC) or through unconventional phorbol-binding proteins such as Munc13-1. We have previously demonstrated that application of phorbol esters or purified PKC potentiates budding of APP-bearing secretory vesicles at the trans-Golgi network (TGN) and toward the plasma membrane where APP becomes a substrate for enzymes responsible for shedding, known collectively as alpha-secretase(s). However, molecular identification of the presumptive "phospho-state-sensitive modulators of ectodomain shedding" (PMES) responsible for regulated shedding has been challenging. Here, we examined the effects on …
Similar Promotion Of Abeta1-42 Fibrillogenesis By Native Apolipoprotein E Epsilon3 And Epsilon4 Isoforms., David Sweeney, Ralph Martins, Harry Levine, Jonathan D Smith, Sam Gandy
Similar Promotion Of Abeta1-42 Fibrillogenesis By Native Apolipoprotein E Epsilon3 And Epsilon4 Isoforms., David Sweeney, Ralph Martins, Harry Levine, Jonathan D Smith, Sam Gandy
Farber Institute for Neuroscience Faculty Papers
The apolipoprotein E epsilon4 allele contributes to the genetic susceptibility underlying a large proportion (~40-60%) of typical, sporadic Alzheimer disease. Apolipoprotein E deficient mice made transgenic for human apolipoprotein E epsilon4 accumulate excess cerebral amyloid when compared to similarly prepared mice expressing human apolipoprotein E epsilon3. Therefore, it is important to search for relevant interactions(s) between apolipoprotein E epsilon4 and Abeta in order to clarify the biological role for apolipoprotein E epsilon4 in Alzheimer disease. Using a thioflavine T (ThT)-based assay, we have investigated the effects of native human apolipoprotein E isoforms on the kinetics of Abeta fibrillogenesis. No obvious …