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This page is alzhub.org's plain-English summary of a published study, not the paper itself. It is generated from the record we hold for this study, sourced and linked below — check the original for the full text and methods.

✓ Peer-reviewed alzhub usefulness score 27 out of 100. Genetics

Topic: Amyloid, tau and blood-test diagnosis

A Doença de Alzheimer (DA) é uma enfermidade neurodegenerativa progressiva e a principal causa de demência em idosos, representando cerca de 60 a 70% dos casos. Caracteriza-se por perda progressiva de memória, linguagem e funções executivas, evoluindo para dependência total e óbito. O aumento da expectativa de vida tem elevado a prevalência da DA, tornando-a um desafio crescente para os sistemas de saúde. Sua fisiopatologia envolve o acúmulo de placas beta-amiloides e emaranhados neurofibrilares, levando à disfunção sináptica e atrofia cerebral, agravada por inflamação e estresse oxidativo. Embora a etiologia da DA seja multifatorial, há crescente evidência do papel da genética e da epigenética na sua patogênese. Mutações nos genes APP, PSEN1, PSEN2 e variantes do gene APOE, especialmente a isoforma ε4, têm sido amplamente associadas ao risco da doença. Paralelamente, mecanismos epigenéticos, como metilação do DNA, modificações de histonas e microRNAs, afetam a expressão gênica e estão implicados na neurodegeneração, sendo influenciados por fatores ambientais e de estilo de vida. Este estudo consiste em uma revisão de literatura exploratória, qualitativa e transversal. Foram analisados 19 artigos publicados entre 2020 e 2025, selecionados nas bases PubMed, SciELO, BVS e MEDLINE, seguindo as diretrizes PRISMA. A análise buscou compreender como fatores genéticos e epigenéticos contribuem para o desenvolvimento e progressão da DA, com foco em potenciais biomarcadores, vias moleculares e estratégias terapêuticas emergentes. A discussão evidencia que tanto a herança genética quanto as modificações epigenéticas interagem de forma complexa, modulando a suscetibilidade individual à DA. A compreensão dessas relações é essencial para avançar no diagnóstico precoce e no desenvolvimento de terapias personalizadas, ampliando as possibilidades de prevenção e intervenção clínica.

Key findings

Why it matters

This literature review examined how genetic and epigenetic factors contribute to Alzheimer's development and progression, focusing on potential biomarkers and therapeutic strategies. Both genetic inheritance and epigenetic mechanisms influenced by environmental and lifestyle factors are implicated.

Study details

How this study scored 27/100
How this study's score is builtJournal tier 7 of 10; Journal's citation record 0 of 4; Study design 0 of 12; Strength of evidence 1 of 5; Peer-review validation 10 of 10; How recent 4 of 5; Sample size 0 of 4; Effect reported 0 of 3; Studied in people 0 of 3; Randomised / blinded 0 of 2; Times cited 0 of 7; Citations per year 0 of 5; Impact for its field and year 0 of 6; Cited by studies here 0 of 6; Still being cited 0 of 4; Senior author's track record 1 of 4; Institution's track record left out, no data; Multi-centre collaboration 0 of 3; Indexed in PubMed 1 of 2; Free to read 2 of 2. 26 of the 97 points it could be judged on, which is 27 of 100. Total 27 of 100.26 of the 97 points we could judge = 27 of 100

Published in a peer-reviewed journal. Scored zero for study design, sample size, effect reported, studied in people and randomised / blinded because the record does not state it. We have no data on institution's track record, so that was left out: it earned 26 of the 97 points we could judge it on, which is 27 out of 100.

ComponentPointsWhy
Journal tier 7 / 10 Tier 3 — peer-reviewed journal (Brazilian Journal of Implantology and Health Sciences)
Journal's citation record 0 / 4 Brazilian Journal of Implantology and Health Sciences: journal h-index 13 (OpenAlex, 2026-10-29)
Study design 0 / 12 No study design recorded — scores zero, not guessed (not stated in the record — scored 0)
Strength of evidence 1 / 5 Rated “low” in our summary
Peer-review validation 10 / 10 Peer-reviewed. Published as an article in a named peer-reviewed journal.
How recent 4 / 5 2025 — within 3 year(s) of the newest study here
Sample size 0 / 4 Participant count not stated — scores zero (not stated in the record — scored 0)
Effect reported 0 / 3 No effect size reported — scores zero (not stated in the record — scored 0)
Studied in people 0 / 3 Not stated whether this was studied in people — scores zero (not stated in the record — scored 0)
Randomised / blinded 0 / 2 No randomisation or blinding stated — scores zero (not stated in the record — scored 0)
Times cited 0 / 7 Cited 0 times (OpenAlex, 2026-10-10)
Citations per year 0 / 5 0.0 citations a year over 3 year(s) since 2025
Impact for its field and year 0 / 6 Cited 0.0× the average for papers of its field and year (OpenAlex FWCI)
Cited by studies here 0 / 6 No other study in this library cites it
Still being cited 0 / 4 Cited 0 times in 2024–2026 (2026 still in progress; OpenAlex)
Senior author's track record 1 / 4 Last-listed author Matheus Santos Marques: h-index 5 (OpenAlex, whole career)
Institution's track record — / 3 No institution listed in OpenAlex — left out of this score
Multi-centre collaboration 0 / 3 OpenAlex lists 0 institution(s) in 0 countries — scores zero (affiliation lists can be incomplete)
Indexed in PubMed 1 / 2 Not in PubMed, but has a DOI
Free to read 2 / 2 Free to read
Points 26 / 97 Scored on 19 of 20 parts. We have no data for the rest, so they are left out: 26 of the 97 points we could judge it on is 27 out of 100.
Total 27 / 100 —

What each of these 20 components measures, and what this score is not →

Read the original

Full text: free to read — OpenAlex lists this copy as free to read: the link above (checked 6 Feb 1020).

Cite this study APA, Vancouver, BibTeX · download .bib or .ris

Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. Check the citation against the original before you use it.

APA 7th

de Eça, V. P. S. C., & Marques, M. S. (2025). O impacto da genética e fatores epigenéticos no desenvolvimento do Alzheimer. Brazilian Journal of Implantology and Health Sciences. https://doi.org/10.36557/2674-8169.2025v7n4p1163-1180

Vancouver

de Eça VPSC, Marques MS. O impacto da genética e fatores epigenéticos no desenvolvimento do Alzheimer. Brazilian Journal of Implantology and Health Sciences. 2025. doi:10.36557/2674-8169.2025v7n4p1163-1180.

BibTeX

@article{deeca2025-4f8b0b66,
  author  = {de Eça, Victor Pereira Silva Curcino and Marques, Matheus Santos},
  title   = {{O impacto da genética e fatores epigenéticos no desenvolvimento do Alzheimer}},
  journal = {Brazilian Journal of Implantology and Health Sciences},
  year    = {2025},
  doi     = {10.36557/2674-8169.2025v7n4p1163-1180},
  url     = {https://doi.org/10.36557/2674-8169.2025v7n4p1163-1180}
}

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