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Research

27,780 Alzheimer's and dementia studies in plain English, each scored out of 100.

Find studies

Showing 401–425 of 1,346 studies (page 17 of 54) · 27,780 in the whole library · How the 0–100 score works

Download bibliography of the first 500 of these studies, in this order: BibTeX (.bib) · RIS (.ris)

Showing 1,346 studies tagged precursor — clear

Browse by subject, author or institution

Each number is how many studies that link shows, with your other filters kept.

Subjects

Authors

Names as each record prints them; the same person can appear under two spellings.

Institutions

From OpenAlex; 13,259 studies have no institution on record and are not counted here.

A note on reading research. One study is rarely the final word.

We try to note the size of a study, whether it was in humans or animals, and how early-stage the finding is. If a summary here doesn't make that clear, treat it with extra caution and check the original source.

Enhanced proteolysis of beta-amyloid in APP transgenic mice prevents plaque formation, secondary pathology, and premature death

✓ Peer-reviewed alzhub usefulness score 53 out of 100. Neuron 2003-12-01

Converging evidence suggests that the accumulation of cerebral amyloid beta-protein (Abeta) in Alzheimer's disease (AD) reflects an imbalance between the production and degradation of this self-aggregating peptide. 3 key findings →

Evidence: low

Full summary, score breakdown and related studies → Original source Free full text

Beta amyloid protein deposition in the brain after severe head injury: implications for the pathogenesis of Alzheimer's disease

✓ Peer-reviewed alzhub usefulness score 53 out of 100. Journal of neurology, neurosurgery, and psychiatry 1994-04-01

In a recent preliminary study it was reported that a severe head injury resulted in the deposition of beta amyloid protein (beta AP) in the cortical ribbon of 30% of patients who survived for less than two weeks. 4 key findings →

Participants: 152 Evidence: low

Full summary, score breakdown and related studies → Original source Free full text

Participation of presenilin 2 in apoptosis: enhanced basal activity conferred by an Alzheimer mutation

✓ Peer-reviewed alzhub usefulness score 53 out of 100. Science (New York, N.Y.) 1996-12-01

Overexpression of the familial Alzheimer's disease gene Presenilin 2 (PS2) in nerve growth factor-differentiated PC12 cells increased apoptosis induced by trophic factor withdrawal or beta-amyloid. 4 key findings →

Evidence: low

Full summary, score breakdown and related studies → Original source Full text may need a subscription

Integrative brain transcriptome analysis links complement component 4 and HSPA2 to the APOE ε2 protective effect in Alzheimer disease

✓ Peer-reviewed alzhub usefulness score 53 out of 100. Molecular psychiatry 2021-09-03

Mechanisms underlying the protective effect of apolipoprotein E (APOE) ε2 against Alzheimer disease (AD) are not well understood. 4 key findings →

Participants: 982 Evidence: low

Full summary, score breakdown and related studies → Original source Free full text

APOE epsilon 4 lowers age at onset and is a high risk factor for Alzheimer's disease; a case control study from central Norway

✓ Peer-reviewed alzhub usefulness score 53 out of 100. BMC neurology 2008-04-16

The objective of this study was to analyze factors influencing the risk and timing of Alzheimer's disease (AD) in central Norway. 4 key findings →

Participants: 376 Evidence: low

Full summary, score breakdown and related studies → Original source Free full text

Higher rates of decline for women and apolipoprotein E epsilon4 carriers

✓ Peer-reviewed alzhub usefulness score 53 out of 100. AJNR. American journal of neuroradiology 2013-07-04

Age and the apolipoprotein E ε4 allele are well-known risk factors for Alzheimer disease, but whether female sex is also a risk factor remains controversial. 4 key findings →

Design: longitudinal study Evidence: moderate

Full summary, score breakdown and related studies → Original source Free full text

Gene-expression profile of the ageing brain in mice

✓ Peer-reviewed alzhub usefulness score 53 out of 100. Nature genetics 2000-07-01

Ageing of the brain leads to impairments in cognitive and motor skills, and is the major risk factor for several common neurological disorders such as Alzheimer disease (AD) and Parkinson disease (PD). 4 key findings →

Evidence: low

Full summary, score breakdown and related studies → Original source Full text may need a subscription

Poor glymphatic function is associated with mild cognitive impairment and its progression to Alzheimer's disease: A DTI-ALPS study

✓ Peer-reviewed alzhub usefulness score 53 out of 100. The Journal of Prevention of Alzheimer s Disease 2025-04-11

• Low ALPS index was significantly associated with high risk of MCI, and the risk of MCI decreased linearly with a higher ALPS index • High ALPS index was dose-dependently associated with a decreased progression from MCI to AD • High ALPS index may delay the MCI onset approximately 3.8 years among CN participants and delay MCI progression to AD by approximately 3.5 years in MCI group • Aβ in choroid plexus, tau in part of the cortex and executive function were partially mediate ALPS-AD association We aimed to explore the association between ALPS index and both risks of MCI from cognitively normal (CN) and incident AD progressed from MCI, as well as potential mediating factors. 1 key finding →

Participants: 519 Evidence: moderate

Full summary, score breakdown and related studies → Original source Free full text

Advanced Glycation End-Products Are Associated With the Presence and Severity of Paratonia in Early Stage Alzheimer Disease

✓ Peer-reviewed alzhub usefulness score 53 out of 100. Journal of the American Medical Directors Association 2017-05-27

From the 144 participants (56.3% female and 43.7% male, with a mean [standard deviation] age of 80.7 [7.7] years), 118 participants were available for final follow-up. 4 key findings →

Design: cohort study Participants: 144 Evidence: moderate

Full summary, score breakdown and related studies → Original source Free full text

Copper subtype of Alzheimer's disease (AD): meta-analyses, genetic studies and predictive value of non-ceruloplasmim copper in mild cognitive impairment conversion to full AD

✓ Peer-reviewed alzhub usefulness score 53 out of 100. Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) 2014-07-10

Alzheimer's disease (AD) is the most common form of dementia. 2 key findings →

Design: meta-analysis Evidence: high

Full summary, score breakdown and related studies → Original source Full text may need a subscription

Selective reduction of astrocyte apoE3 and apoE4 strongly reduces Aβ accumulation and plaque-related pathology in a mouse model of amyloidosis

✓ Peer-reviewed alzhub usefulness score 52 out of 100. Molecular neurodegeneration 2022-02-02

This study reveals an important role of astrocytic apoE3 and apoE4 on the deposition and accumulation of Aβ plaques as well as on certain Aβ-associated downstream effects. 5 key findings →

Evidence: low

Full summary, score breakdown and related studies → Original source Free full text

Apolipoprotein E promotes astrocyte colocalization and degradation of deposited amyloid-beta peptides

✓ Peer-reviewed alzhub usefulness score 52 out of 100. Nature medicine 2004-06-13

We have previously shown that apolipoprotein E (Apoe) promotes the formation of amyloid in brain and that astrocyte-specific expression of APOE markedly affects the deposition of amyloid-beta peptides (Abeta) in a mouse model of Alzheimer disease. 1 key finding →

Evidence: low

Full summary, score breakdown and related studies → Original source Full text may need a subscription

Novel Alzheimer risk genes determine the microglia response to amyloid-β but not to TAU pathology

✓ Peer-reviewed alzhub usefulness score 52 out of 100. EMBO molecular medicine 2020-01-17

Polygenic risk scores have identified that genetic variants without genome-wide significance still add to the genetic risk of developing Alzheimer's disease (AD). 2 key findings →

Evidence: low

Full summary, score breakdown and related studies → Original source Free full text

From across this tag

10 of the 1,344 studies in this tag, picked by a fixed rule (a hash of each study's address), not by score or date; each page of this list shows a different 10. The same 10 appear here every time.

↑ Change the filters

Where “Free full text” comes from

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

How the 0–100 score works — and why some entries are capped

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.

  • Journal tier up to 10 pts
  • Journal's citation record up to 4 pts
  • Study design up to 12 pts
  • Strength of evidence up to 5 pts
  • Peer-review validation up to 10 pts
  • How recent up to 5 pts
  • Sample size up to 4 pts
  • Effect reported up to 3 pts
  • Studied in people up to 3 pts
  • Randomised / blinded up to 2 pts
  • Times cited up to 7 pts
  • Citations per year up to 5 pts
  • Impact for its field and year up to 6 pts
  • Cited by studies here up to 6 pts
  • Still being cited up to 4 pts
  • Senior author's track record up to 4 pts
  • Institution's track record up to 3 pts
  • Multi-centre collaboration up to 3 pts
  • Indexed in PubMed up to 2 pts
  • Free to read up to 2 pts

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 27,780 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.

What this library is — and isn't

This is a large sample of the Alzheimer's literature, not an exhaustive index of it. It holds 27,780 records, built mostly from automated pulls of Europe PMC (61.1% of the library) and OpenAlex (18.3%), 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.

1,034 records (3.7% of the library) are not peer-reviewed — 962 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 →

Newest studies, as a dated timeline →    Atom feed