Evidence map›Paper›PMID 22068907›Full record

ArticleBrazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica2012

Protective effect of the APOE-e3 allele in Alzheimer's disease.

B V P de-Almada, L D de-Almeida, D Camporez, M V D de-Moraes, R L Morelato, A M S Perrone, L Belcavello, I D Louro, F de-Paula

Abstract read
In one paragraph

Article in Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

17 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2019
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  15. Association of Alzheimer's Disease With APOE and IL-1α Gene Polymorphisms.American journal of Alzheimer's disease and other dementias · 2015
    Article
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  17. Article
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

9 authors.

B V P de-AlmadaDepartamento de Ciências Biológicas, Universidade Federal do Espírito Santo, Vitória, ES, Brasil.
L D de-Almeida
D Camporez
M V D de-Moraes
R L Morelato
A M S Perrone
L Belcavello
I D Louro
F de-Paula

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although several alleles of susceptibility to Alzheimer's disease (AD) have been studied in the last decades, few polymorphisms have been considered as risk factors for the disease. Among them, the APOE-e4 allele appears to be the major genetic risk factor for the onset of the disease. However, it is important to confirm the potential susceptibility of these genetic variants in different populations in order to establish a genetic profile for the disease in specific communities. This study analyzed the APOE polymorphisms regarding susceptibility to AD in a sample of 264 individuals (primarily Caucasians; 82 cases and 182 controls) in the population from Vitória, ES, Brazil, by PCR restriction fragment length polymorphism (PCR-RFLP) methods. The patients were selected according to clinical criteria for probable AD. Whereas the e4 allele showed statistically significant positive association with susceptibility to AD (OR = 3.01, 95%CI = 1.96-4.61; P < 0.0001), the e2 allele did not. The results of the e4 allele confirm the role of this polymorphism as a risk factor for AD in the sample studied as observed in other populations. Although the e3 allele has been considered neutral in several studies, our results suggest that it acts as a protective factor against AD in the population studied (OR = 0.46, 95%CI = 0.30-0.67; P < 0.0001). This study may provide a new insight into the role of the APOE-e3 allele in the etiology of AD and might help to establish a profile of risk for AD in the population from Vitória, ES.

Indexed as

Gene FrequencyGenetic Predisposition to DiseaseAged, 80 and overAlzheimer DiseaseApolipoprotein E3Case-Control StudiesFemaleGenetic MarkersGenotypeHumansMaleReverse Transcriptase Polymerase Chain ReactionRisk FactorsApolipoprotein E3Genetic Markers

Identifiers

PMID22068907
PMCPMC3854133

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Registered trials

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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.