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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

Dysregulation of protein phosphatase 2A in parkinson disease and dementia with lewy bodies.

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Protein phosphatase 2A (PP2A) is a heterotrimeric holoenzyme composed of a catalytic C subunit, a structural A subunit, and one of several regulatory B subunits that confer substrate specificity. The assembly and activity of PP2A are regulated by reversible methylation of the C subunit. α-Synuclein,

Reduced binding of protein phosphatase 2A to tau protein with frontotemporal dementia and parkinsonism linked to chromosome 17 mutations.

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Coding region and intronic mutations in the tau gene cause frontotemporal dementia and parkinsonism linked to chromosome 17 (FTDP-17). We have previously reported that ABalphaC, a major form of protein phosphatase 2A (PP2A) in brain, binds tightly to tau protein in vitro and is a major tau

Tau pathology involves protein phosphatase 2A in parkinsonism-dementia of Guam.

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Parkinsonism-dementia (PD) of Guam is a neurodegenerative disease with parkinsonism and early-onset Alzheimer-like dementia associated with neurofibrillary tangles composed of hyperphosphorylated microtubule-associated protein, tau. β-N-methylamino-l-alanine (BMAA) has been suspected of being

Fine structural localization of acid phosphatase in senile plaques in Alzheimer's presenile dementia.

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The effect of Scutellaria baicalensis stem-leaf flavonoids on spatial learning and memory in chronic cerebral ischemia-induced vascular dementia of rats.

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Flavonoids have been shown to improve cognitive function and delay the dementia progression. However, the underlying mechanisms remain elusive. In the present study, we examined the effect of Scutellaria baicalensis stem-leaf total flavonoids (SSTFs) extracted from S. baicalensis Georgi on spatial

Altered glutamate neurotransmission and behaviour in dementia: evidence from studies of memantine.

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Behavioural symptoms are a significant problem in Alzheimer's disease (AD). Symptoms including agitation/aggression and psychosis reduce patient quality of life, significantly increase caregiver burden, and often trigger nursing home placement. Underlying changes in the serotonergic, noradrenergic

Loss of endoplasmic reticulum-associated enzymes in affected brain regions in Huntington's disease and Alzheimer-type dementia.

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Post-mortem brain samples from patients with either Huntington's disease, Alzheimer-type dementia or appropriate controls were assayed for endoplasmic reticulum enzymes, NADPH-cytochrome c reductase, neutral alpha-glucosidase, inosine diphosphatase, alpha-mannosidase and glucose-6-phosphatase and

Acute administration of L-DOPA induces changes in methylation metabolites, reduced protein phosphatase 2A methylation, and hyperphosphorylation of Tau protein in mouse brain.

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Folate deficiency and hypomethylation have been implicated in a number of age-related neurodegenerative disorders including dementia and Parkinson's disease (PD). Levodopa (L-dopa) therapy in PD patients has been shown to cause an increase in plasma total homocysteine as well as depleting cellular

Alzheimer dementia and Pick's disease: neurofibrillary tangles and Pick bodies are associated with identical phosphorylated neurofilament epitopes.

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Sections of formaldehyde-fixed paraffin-embedded cortical and hippocampal brain tissue from five cases with senile dementia of Alzheimer type (SDAT) and five cases with Pick's disease (PD) were immunostained with the monoclonal antibodies (mabs) 147, RT 97, BF 10 and 8D8 with and without

Neuropathological features of frontotemporal dementia and parkinsonism linked to chromosome 17q21-22 (FTDP-17): Duke Family 1684.

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Frontotemporal dementia with parkinsonism (FTDP-17) is an autosomal dominant disorder that presents clinically with dementia, extrapyramidal signs, and behavioral disturbances in mid-life and progresses to death within 5 to 10 years. Pathologically, the disorder is characterized by variable neuronal

Phenotypic profiles and functional genomics in Alzheimer's disease and in dementia with a vascular component.

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Alzheimer's disease (AD) and dementia with vascular component (DVC) are the most prevalent forms of dementia. Both clinical entities share many similarities, but they differ in major phenotypic and genotypic profiles as revealed by structural and functional genomics studies. Comparative phenotypic

Microvascular changes in the white mater in dementia.

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Our studies of the brain microvascular system have focused on some aspects not commonly studied by other research groups because we use some techniques not often used by others. Our observations tend to add new details to the pathological picture rather than contradict the mainstream findings. We

Increased phosphorylation of collapsin response mediator protein-2 at Thr514 correlates with β-amyloid burden and synaptic deficits in Lewy body dementias.

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Collapsin response mediator protein-2 (CRMP2) regulates axonal growth cone extension, and increased CRMP2 phosphorylation may lead to axonal degeneration. Axonal and synaptic pathology is an important feature of Lewy body dementias (LBD), but the state of CRMP2 phosphorylation (pCRMP2) as well as

Okadaic Acid and Hypoxia Induced Dementia Model of Alzheimer's Type in Rats.

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Alzheimer's disease (AD) is the most common cause of progressive decline of memory function in aged humans. To study about a disease mechanism and progression, animal models for the specific disease are needed. For AD, although highly valid animal models exist, none of the existing models

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