29,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
Two cases of germ cell tumors (GCTs) of the basal ganglia are presented and 40 previously reported cases are reviewed. 2 key findings →
Evidence: low
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Naodesheng (NDS) formula, which consists of Rhizoma Chuanxiong, Lobed Kudzuvine, Carthamus tinctorius, Radix Notoginseng, and Crataegus pinnatifida, is widely applied for the treatment of cardio/cerebrovascular ischemic diseases, ischemic stroke, and sequelae of cerebral hemorrhage, etc. At present, the studies on NDS formula for Alzheimer's disease (AD) only focus on single component of this prescription, and there is no report about the synergistic mechanism of the constituents in NDS formula for the potential treatment of dementia. 5 key findings →
Evidence: low
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Finally, the most relevant features are selected by means of the non-parametric Mann- Whitney U-test. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Patients at late stage Parkinson's disease (PD) develop several motor and nonmotor complications, which dramatically impair their quality of life. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The value and durability of this potential contribution, however, demands an improved discipline-wide knowledge base about the unique features associated with different dementia variants. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Assessment by a speech therapist, staffing ratios, advance directives, fiscal considerations, and specialized dementia units are potentially modifiable factors in nursing homes that may influence the practice of tube feeding in advanced cognitive impairment. 4 key findings →
Evidence: low
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Transcriptional regulation of the gene encoding the amyloid precursor protein (APP) may play an important role in the formation of the amyloid depositions observed in Alzheimer disease and Down syndrome patients. 4 key findings →
Evidence: low
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Progressive electroencephalographic disorganization and decreased voltage amplitude in the late components of the averaged visual evoked potentials were recorded in the last two years of life of a patient with Down disease and Alzheimer degeneration. 3 key findings →
Evidence: low
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The number of people over the age of 60 years with lifelong developmental delays is predicted to double by 2030. 1 key finding →
Evidence: low
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It is hypothesized that Alzheimer's disease is a human phylogenetic disease which has a common multifactorial pathogenesis in sporadic and familial cases and in Down syndrome, related to a genomic character function G(x). 1 key finding →
Evidence: low
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Down syndrome (DS) is the most common non-lethal genetic condition that affects approximately 1 in 700 births in the United States of America. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
A major component of amyloid deposits found in Alzheimer disease and Down syndrome is the beta/A4 peptide, which is derived from the Alzheimer amyloid protein precursor (APP). 3 key findings →
Evidence: low
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The finding of postmortem susceptibility-weighted changes in the cerebral cortex of patients with cerebral amyloidosis with a human 7.0-T MR imaging system opens up the possibility of obtaining in vivo radiologic evidence of cerebral amyloid beta deposition. 1 key finding →
Evidence: low
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The vascular and parenchymal amyloid deposits in Alzheimer disease (AD), normal aging and Down syndrome are mainly composed of a 4 kDa polypeptide (A4), which derives from a larger precursor protein (APP). 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The t-complex polypeptide 1 is a selective molecular chaperone in tubulin biogenesis, by that nascent tubulin subunits are bound to t-complex polypeptide 1 and released in assembly competent forms. 2 key findings →
Evidence: low
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Genetic and other defects leading to brain changes in Down syndrome, Alzheimer disease, amyotrophic lateral sclerosis, Huntington disease, Gaucher disease, hypertension and other disorders are rapidly being identified. 3 key findings →
Evidence: low
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Polyamines may play an important role in brain development, mature brain function and also in neurodegenerative conditions. 1 key finding →
Evidence: low
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Our results demonstrate that gene expression in trisomy 21 affected placentas significantly differs from that of chromosomally normal placentas, and this difference is only partially explained by over-expression of genes from chromosome 21. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Down syndrome (DS), or trisomy 21, is the most common identifiable genetic cause of mental retardation. 5 key findings →
Evidence: low
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Basal forebrain cholinergic neurons play an important role in cognitive functions such as learning and memory, and they are affected in several neurodegenerative diseases, including Alzheimer disease and Down syndrome. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
It was suggested that increased Cu-Zn superoxide dismutase (SOD-1) might be involved in the various biological abnormalities found in Down's syndrome (DS) such as premature aging and Alzheimer-type neurological lesions. 2 key findings →
Evidence: low
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Recently, a frequent prion protein gene (PRNP) polymorphism consisting of a methionine (M) for valine (V) substitution at codon 129 has been associated with cognitive impairment in elderly individuals. 4 key findings →
Evidence: low
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Neurodegeneration in fetal development of Down syndrome (DS) patients is proposed to result in apparent neuropathological abnormalities and to contribute to the phenotypic characteristics of mental retardation and premature development of Alzheimer disease. 1 key finding →
Evidence: low
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Cross-sectional and longitudinal analyses were used to compare age-related changes in adaptive functioning in institutionalized adults with and without Down syndrome. 2 key findings →
Design: cross-sectional Evidence: moderate
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Neurofibrillary tangles (NFTs) form in a number of neurodegenerative disorders. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Free full text links and the Full text may need a subscription label come from Unpaywall, Europe PMC and OpenAlex records of free copies, checked 10 Oct 2026. A study with neither is unknown, not paywalled. Show only studies that are free to read
This is alzhub's own score. It is not an official metric, not an impact factor, and no journal, publisher or ranking body endorses it. We built it so that a reader who is not a scientist can tell a landmark trial from a conference abstract without having to already know the difference. Every point comes from one of 20 components, all of them printed on the study itself, so you can disagree with our arithmetic rather than having to trust the total.
Journals are placed in ordered tiers, never given a numeric impact factor — we could not verify current impact factors from a source we control, and an invented one would be worse than none. Tier 1 is the top-tier general journals (NEJM, The Lancet, JAMA, Nature, Science, Nature Medicine); tier 2 is the leading specialty journals; tier 3 is every other peer-reviewed journal. A separate part scores how much the journal's own papers are cited, which tells the tier-3 journals apart.
Two rules we don't bend. First, we never fill in a missing value: if a record does not state a sample size or a design, that component scores zero, and if we simply have no data for a part, such as a citation count, that part is left out and the study is scored on the parts we could check. The study card says which. Second, anything that is not a peer-reviewed article is capped at 16/100 and carries a warning chip — so a conference abstract or a company press release can never outrank a peer-reviewed paper, no matter how good it looks.
We rank a rigorous null result — a good trial showing that something does not work — above an early positive finding. Someone deciding whether to buy a supplement is served by that, and the rigour is already counted by the design and journal components.
The score is computed from the published data alone and is reproducible: the same file always yields the same numbers.
See the whole rubric drawn out → — four charts covering all 29,780 studies: how the scores are spread and where the cap bites, which of the 20 components the library is strong and weak on, which subjects rest on stronger evidence, and what kinds of study each subject is actually built from.
This is a large sample of the Alzheimer's literature, not an exhaustive index of it. It holds 29,780 records, built mostly from automated pulls of Europe PMC (63.8% of the library) and OpenAlex (17.1%), plus smaller pulls from PubMed, Crossref and medRxiv. If a study, a drug, or a finding isn't here, that is not evidence it doesn't exist in the literature — it may simply not have been pulled in yet.
1,037 records (3.5% of the library) are not peer-reviewed — 964 of those are preprints posted before any journal review, and the rest are conference abstracts, regulatory notices and reports. Every study card on this page states its status plainly, and the score above is capped for anything that isn't a peer-reviewed article.
See the full, machine-readable breakdown of this library's coverage →