Evidence map›Paper›PMID 8248242›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1993

Molecular cloning of cDNA encoding an unrecognized component of amyloid in Alzheimer disease.

K Uéda, H Fukushima, E Masliah, Y Xia, A Iwai, M Yoshimoto, D A Otero, J Kondo, Y Ihara, T Saitoh

Open access · greenAbstract readComparative Study
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 518 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
518citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

518 citing papers in PubMed, 1 synthesis or guideline pooled it, 1,459 citations in OpenAlex.

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458 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 1 institution in 1 country.

K UédaDepartment of Neurosciences, School of Medicine, University of California, San Diego, La Jolla 92093-0624.
H Fukushima
E Masliah
Y Xia
A Iwai
M Yoshimoto
D A Otero
J Kondo
Y Ihara
T Saitoh
University of California San Diego · US

Funding

NIA NIH HHS AG05131
6 · The paper itself

Abstract

A neuropathological hallmark of Alzheimer disease (AD) is a widespread amyloid deposition. We analyzed the entire amino acid sequences in an amyloid preparation and found, in addition to the major beta/A4-protein (A beta) fragment, two unknown peptides. We raised antibodies against synthetic peptides using subsequences of these peptides. These antibodies immunostained amyloid in neuritic and diffuse plaques as well as vascular amyloid. Electron microscopic analysis demonstrated that the immunostaining was localized on amyloid fibrils. We have isolated an apparently full-length cDNA encoding a 140-amino-acid protein within which two previously unreported amyloid sequences are encoded in tandem in the most hydrophobic domain. We tentatively named this 35-amino acid peptide NAC (non-A beta component of AD amyloid) and its precursor NACP. NAC is the second component, after A beta, identified chemically in the purified AD amyloid preparation. Secondary structure predictions indicate that the NAC peptide sequence has a strong tendency to form beta-structures consistent with its association with amyloid. NACP is detected as a M(r) 19,000 protein in the cytosolic fraction of brain homogenates and comigrates on immunoblots with NACP synthesized in Escherichia coli from NACP cDNA. NACP mRNA is expressed principally in brain but is also expressed in low concentrations in all tissues examined except in liver, suggesting its ubiquitous and brain-specific functions. The availability of the cDNA encoding full-length NACP should help to elucidate the mechanisms of amyloidosis in AD.

Indexed as

Alzheimer DiseaseAmino Acid SequenceAmyloidBase SequenceCloning, MolecularDNA, ComplementaryGene ExpressionHumansImmunoenzyme TechniquesMolecular Sequence DataNerve Tissue ProteinsProtein PrecursorsRecombinant ProteinsRepetitive Sequences, Nucleic AcidRNA, MessengerSequence AlignmentAmyloidDNA, ComplementaryNerve Tissue ProteinsProtein PrecursorsRecombinant ProteinsRNA, MessengerSynucleins

Identifiers

PMID8248242
PMCPMC47966
OpenAlexW2013313629

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.