Newest studies
Every summary in our library, newest first, as a dated timeline.
Showing 25,776–25,800 of 27,380 studies, newest first · page 1032 of 1096.
April 1999 7
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1999-04-01
Crystal structure of the N-terminal, growth factor-like domain of Alzheimer amyloid precursor protein
44/100 ✓ Peer-reviewed Risk genes beyond APOE Nature structural biology
Key finding: A proteolytic-breakdown product of APP, called beta-amyloid, is a major component of the diffuse and fibrillar deposits found in Alzheimer diseased brains. +3 more findings
Full summary, score breakdown and related studies → Original source
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1999-04-01
Cerebrospinal fluid A beta42 is increased early in sporadic Alzheimer's disease and declines with disease progression
46/100 ✓ Peer-reviewed Mild cognitive impairment Annals of neurology
Key finding: We found that A beta42 is strongly elevated in early and mid stages of AD, and thereafter it declines with disease progression. +1 more finding
Full summary, score breakdown and related studies → Original source
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1999-04-01
Incidence and distribution of parkinsonism in Olmsted County, Minnesota, 1976-1990
52/100 ✓ Peer-reviewed How common it is Neurology
Key finding: Parkinsonism is a common disease among the elderly; its incidence increases steeply with advancing age and is consistently higher in men.
Full summary, score breakdown and related studies → Original source
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1999-04-01
Prevalence and impact of caregiving: a detailed comparison between dementia and nondementia caregivers
53/100 ✓ Peer-reviewed Caregiving The Gerontologist
Key finding: Not only do dementia caregivers spend significantly more hours per week providing care than nondementia caregivers, they also report greater impacts in terms of employment complications, caregiver strain, mental and physical health problems, time for leisure and other family members, and family conflict.
Full summary, score breakdown and related studies → Original source
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1999-04-01
Alzheimer neuropathologic alterations in aged cognitively normal subjects
51/100 ✓ Peer-reviewed Getting a diagnosis Journal of neuropathology and experimental neurology
Key finding: The histopathologic changes distinguishing early Alzheimer disease (AD) from normal or pathologic aging are not clearly defined. +4 more findings
Full summary, score breakdown and related studies → Original source
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1999-04-01
The biochemical pathway of neurofibrillary degeneration in aging and Alzheimer's disease
55/100 ✓ Peer-reviewed Getting a diagnosis Neurology
Key finding: The relationship between NFD and Alzheimer-type dementia, and the criteria for a biochemical diagnosis of AD, are documented, and an association between AD and the extent of NFD in defined brain areas is shown.
Full summary, score breakdown and related studies → Original source
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1999-04-01
Differential effects of apolipoprotein E isoforms on metal-induced aggregation of A beta using physiological concentrations
44/100 ✓ Peer-reviewed Genetics Biochemistry
Key finding: Consistent with the increased risk for AD associated with the epsilon 4 allele of APOE, metal-induced aggregation of A beta was highest for both zinc and copper in the presence of apolipoprotein E4.
Full summary, score breakdown and related studies → Original source
March 1999 18
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1999-03-15
RNA Oxidation Is a Prominent Feature of Vulnerable Neurons in Alzheimer’s Disease
47/100 ✓ Peer-reviewed Disease mechanisms Journal of Neuroscience
Key finding: Relative density measurement showed that there was a significant increase (p < 0.0001) in 8OHdG and 8OHG immunoreactivity with 1F7 in cases of AD (n = 22) as compared with senile (n = 13), presenile (n = 10), or young controls (n = 4).
Full summary, score breakdown and related studies → Original source
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1999-03-01
Useful services for families: research findings and directions
36/100 ✓ Peer-reviewed Costs and economics International Journal of Geriatric Psychiatry
Key finding: There are surprisingly few empirical studies overall and the reported benefits typically are modest. +2 more findings
Full summary, score breakdown and related studies → Original source
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1999-03-01
Early phenotypic changes in transgenic mice that overexpress different mutants of amyloid precursor protein in brain
36/100 ✓ Peer-reviewed Disease mechanisms The Journal of biological chemistry
Key finding: The cognitive impairment, demonstrated in F1 hybrids of the different APP transgenic lines, was significantly different from nontransgenic littermates as early as 3 months of age. +3 more findings
Full summary, score breakdown and related studies → Original source
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1999-03-01
Attention and executive deficits in Alzheimer's disease. A critical review
40/100 ✓ Peer-reviewed Brain tissue and pathology Brain : a journal of neurology
Key finding: Current evidence suggests that after an initial amnesic stage in Alzheimer's disease, attention is the first non-memory domain to be affected, before deficits in language and visuospatial functions. +1 more finding
Full summary, score breakdown and related studies → Original source
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1999-03-01
Complete sequence of a novel protein containing a femtomolar-activity-dependent neuroprotective peptide
36/100 ✓ Peer-reviewed Disease mechanisms Journal of neurochemistry
Key finding: Here, the complete coding sequence of a novel protein (828 amino acids, pI 5.99), derived from mouse neuroglial cells, is revealed. +2 more findings
Full summary, score breakdown and related studies → Original source
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1999-03-01
Efficacy and safety of rivastigmine in patients with Alzheimer's disease: international randomised controlled trial
57/100 ✓ Peer-reviewed Treatments BMJ (Clinical research ed.)
Key finding: At the end of the study cognitive function had deteriorated among those in the placebo group. +3 more findings
Full summary, score breakdown and related studies → Original source
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1999-03-01
Reverse genetic analysis of Caenorhabditis elegans presenilins reveals redundant but unequal roles for sel-12 and hop-1 in Notch-pathway signaling
36/100 ✓ Peer-reviewed Drug development Proceedings of the National Academy of Sciences of the United States of America
Key finding: Studies in Caenorhabditis elegans and in mice indicate that one function of presenilin genes is to facilitate Notch-pathway signaling. +1 more finding
Full summary, score breakdown and related studies → Original source
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1999-03-01
Evidence for a physical interaction between presenilin and Notch
36/100 ✓ Peer-reviewed Drug development Proceedings of the National Academy of Sciences of the United States of America
Key finding: When PS1 was immunoprecipitated from 293 cells that had been metabolically labeled with [35S]methionine and [35S]cysteine, Notch1 was the primary protein detected in PS1 immunoprecipitates, suggesting that this interaction is specific. +1 more finding
Full summary, score breakdown and related studies → Original source
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1999-03-01
Impaired synaptic plasticity and learning in aged amyloid precursor protein transgenic mice
40/100 ✓ Peer-reviewed Risk genes beyond APOE Nature neuroscience
Key finding: These deficits are accompanied by minimal or no loss of presynaptic or postsynaptic elementary structural elements in the hippocampus, suggesting that impairments in functional synaptic plasticity may underlie some of the cognitive deficits in these mice and, possibly, in Alzheimer's patients.
Full summary, score breakdown and related studies → Original source
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1999-03-01
Constitutive and regulated alpha-secretase cleavage of Alzheimer's amyloid precursor protein by a disintegrin metalloprotease
36/100 ✓ Peer-reviewed Risk genes beyond APOE Proceedings of the National Academy of Sciences of the United States of America
Key finding: These results support the view that APP is cleaved both at the cell surface and along the secretory pathway. +1 more finding
Full summary, score breakdown and related studies → Original source
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1999-03-01
Plaque-independent disruption of neural circuits in Alzheimer's disease mouse models
36/100 ✓ Peer-reviewed Risk genes beyond APOE Proceedings of the National Academy of Sciences of the United States of America
Key finding: Autosomal dominant forms of familial Alzheimer's disease (FAD) are associated with increased production of the amyloid beta peptide, Abeta42, which is derived from the amyloid protein precursor (APP). +3 more findings
Full summary, score breakdown and related studies → Original source
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1999-03-01
Effect of literacy on neuropsychological test performance in nondemented, education-matched elders
36/100 ✓ Peer-reviewed Vascular contributions Journal of the International Neuropsychological Society : JINS
Key finding: MANOVAs revealed a significant overall effect for literacy status (literate vs. illiterate) on neuropsychological test performance when groups were matched on years of education. +3 more findings
Full summary, score breakdown and related studies → Original source
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1999-03-01
The role of excitotoxicity in neurodegenerative disease: implications for therapy
36/100 ✓ Peer-reviewed Vascular contributions Pharmacology & therapeutics
Key finding: Several clinical trials have evaluated the potential of antiglutamate drugs to improve outcome following acute ischaemic stroke, but to date, the results of these have been disappointing. +1 more finding
Full summary, score breakdown and related studies → Original source
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1999-03-01
Effect of chronic high-dose exogenous cortisol on hippocampal neuronal number in aged nonhuman primates
45/100 ✓ Peer-reviewed Hippocampus size on brain scans The Journal of neuroscience : the official journal of the Society for Neuroscience
Key finding: These findings suggest that chronically elevated cortisol concentrations, in the absence of stress, do not produce hippocampal neuronal loss in nonhuman primates.
Full summary, score breakdown and related studies → Original source
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1999-03-01
Sex and seasonal differences in the rate of cell proliferation in the dentate gyrus of adult wild meadow voles
36/100 ✓ Peer-reviewed Hippocampus size on brain scans Neuroscience
Key finding: We found that the number of [3H]thymidine-labeled cells varied across the seasons and across sex in the meadow vole. +4 more findings
Full summary, score breakdown and related studies → Original source
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1999-03-01
Activation of receptor for advanced glycation end products: a mechanism for chronic vascular dysfunction in diabetic vasculopathy and atherosclerosis
36/100 ✓ Peer-reviewed Disease mechanisms Circulation research
Key finding: In a model of accelerated atherosclerosis associated with diabetes in genetically manipulated mice, blockade of cell surface RAGE by infusion of a soluble, truncated form of the receptor completely suppressed enhanced formation of vascular lesions. +1 more finding
Full summary, score breakdown and related studies → Original source
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1999-03-01
Tangles and plaques in nondemented aging and ?preclinical? Alzheimer's disease
57/100 ✓ Peer-reviewed Brain tissue and pathology Annals of Neurology
Key finding: Tangles were found in all the nondemented cases, especially in hippocampal and parahippocampal areas; the average tangle concentration increased exponentially with age. +4 more findings
Full summary, score breakdown and related studies → Original source
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1999-03-01
Insight in dementia: when does it occur? Evidence for a nonlinear relationship between insight and cognitive status
44/100 ✓ Peer-reviewed Cognitive tests and assessment The journals of gerontology. Series B, Psychological sciences and social sciences
Key finding: The aim of this study was to evaluate insight in a group of demented patients with two assessment scales and to assess their relationship with the cognitive level of disease severity. +3 more findings
Full summary, score breakdown and related studies → Original source
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