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Página 1 a partir de 293 resultados
Tyrosine hydroxylase, tryptophan hydroxylase, biopterin, and neopterin in the brains of normal controls and patients with senile dementia of Alzheimer type.
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The activities of tyrosine hydroxylase and tryptophan hydroxylase, and the concentrations of the biopterin cofactor and the precursor neopterin were measured in 14 regions of postmortem brains from four histologically verified patients of senile dementia of the Alzheimer type (SDAT) and eight
Degeneration of tyrosine hydroxylase-immunoreactive neurons in the cerebral cortex and hippocampus of patients with dementia with Lewy bodies.
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We immunohistochemically investigated the degeneration of tyrosine hydroxylase (TH)-positive neurons in the cerebral cortex and hippocampus of dementia with Lewy bodies (DLB) brains. TH-positive neurons in the cerebral cortex and hippocampus were decreased in number, and were rarely associated with
Anti-CD45RO suppresses human immunodeficiency virus type 1 replication in microglia: role of Hck tyrosine kinase and implications for AIDS dementia.
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Macrophages and microglia are productively infected by HIV-1 and play a pivotal role in the pathogenesis of AIDS dementia. Although macrophages and microglia express CD45, a transmembrane protein tyrosine phosphatase, whether modulation of its activity affects human immunodeficiency virus type 1
Association of intronic sequence variant in the gene encoding spleen tyrosine kinase with susceptibility to vascular dementia.
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OBJECTIVE
This study was aimed to identify a novel strong candidate gene for the susceptibility to vascular dementia (VaD) with comprehensive evidences.
METHODS
A preliminary genome-wide association study (GWAS) was conducted to identify nucleotide sequence variants susceptible to VaD.
Beneficial Effect of Protein Tyrosine Phosphatase Inhibitor and Phytoestrogen in Dyslipidemia-Induced Vascular Dementia in Ovariectomized Rats.
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BACKGROUND
Estrogen deficiency and increase in protein tyrosine phosphatase (PTPase) activity may be a key mechanism in postmenopausal dyslipidemia-induced vascular dysfunction and dementia. Thus, the present study has been designed to investigate the effect of biochanin A (BCA, a phytoestrogen) and
An Aberrant Phosphorylation of Amyloid Precursor Protein Tyrosine Regulates Its Trafficking and the Binding to the Clathrin Endocytic Complex in Neural Stem Cells of Alzheimer's Disease Patients.
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Alzheimer's disease (AD) is the most common cause of dementia and is likely caused by defective amyloid precursor protein (APP) trafficking and processing in neurons leading to amyloid plaques containing the amyloid-β (Aβ) APP peptide byproducts. Understanding how APP is targeted to selected
Interleukin-1 beta released by gp120 drives neural death through tyrosine phosphorylation and trafficking of NMDA receptors.
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Interleukin-1beta is a proinflammatory cytokine implicated under pathological conditions involving NMDA receptor activation, including the AIDS dementia complex (HAD). No information is available on the molecular mechanisms recruited by native interleukin-1beta produced under this type of condition.
Amino acid concentrations in cerebrospinal fluid in presenile and senile dementia of Alzheimer type and multi-infarct dementia.
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Free amino acid levels were measured in cerebrospinal fluid (CSF) from demented patients (D, n = 30) suffering from presenile and senile dementia of Alzheimer type (PDAT, n = 7; SDAT, n = 9), multi-infarct dementia (MID, n = 14) and a reference sample group consisting of young neurotic patients (R,
Repurposing Proteostasis-Modifying Drugs to Prevent or Treat Age-Related Dementia: A Systematic Review.
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Background: Dementia has a significant impact on quality of life of older individuals. Impaired proteostasis has been implicated as a potential cause of dementia, that can be therapeutically targeted to improve patient outcomes. This review aimed to collate all current evidence of the potential for
Flipping the switches: CD40 and CD45 modulation of microglial activation states in HIV associated dementia (HAD).
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Microglial dysfunction is associated with the pathogenesis and progression of a number of neurodegenerative disorders including HIV associated dementia (HAD). HIV promotion of an M1 antigen presenting cell (APC) - like microglial phenotype, through the promotion of CD40 activity, may impair
Neuroprotective effects of tetrandrine against vascular dementia.
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Tetrandrine is one of the major active ingredients in Menispermaceae Stephania tetrandra S. Moore, and has specific therapeutic effects in ischemic cerebrovascular disease. Its use in vascular dementia has not been studied fully. Here, we investigated whether tetrandrine would improve behavioral and
Clinical PET/MR Imaging in Dementia and Neuro-Oncology.
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The introduction of hybrid PET/MRI systems allows simultaneous multimodality image acquisition of high technical quality. This technique is well suited for the brain, and particularly in dementia and neuro-oncology. In routine use combinations of well-established MRI sequences and PET tracers
Neuropathological characterization of Lemur tyrosine kinase 2 (LMTK2) in Alzheimer's disease and neocortical Lewy body disease.
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Alzheimer's disease (AD) and neocortical Lewy body disease (LBD) are the most common neurodegenerative dementias, with no available curative treatment. Elucidating pathomechanism and identifying novel therapeutic targets are of paramount importance. Lemur tyrosine kinase 2 (LMTK2) is involved in
A neuropathological study of the disturbance of the nigro-amygdaloid connections in brains from patients with dementia with Lewy bodies.
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We neuropathologically and immunohistochemically investigated characteristics of the central amygdaloid nucleus lesion and its relationship with the substantia nigra lesion in dementia with Lewy bodies (DLB) brains. Nine DLB, four Parkinson's disease (PD) and four Alzheimer-type dementia (ATD) cases
Immunohistochemical study of the striatal efferents and nigral dopaminergic neurons in parkinsonism-dementia complex on Guam in comparison with those in Parkinson's and Alzheimer's diseases.
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A comparative topographical immunohistochemical analysis was performed on the basal ganglia (including the substantia nigra) in Guamanian parkinsonism-dementia complex, idiopathic Parkinson's disease (PD), and Alzheimer's disease (AD). The striatal projection neurons and their efferent fibers were
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