Evidence map›Paper›PMID 19851280›Full record

ArticleMolecular psychiatry2009

The LEARn model: an epigenetic explanation for idiopathic neurobiological diseases.

D K Lahiri, B Maloney, N H Zawia

Abstract read
In one paragraph

Article in Molecular psychiatry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 99 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
99citing papers in PubMed, 1 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

99 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  11. Common and Trace Metals in Alzheimer's and Parkinson's Diseases.International journal of molecular sciences · 2023
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39 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

3 authors.

D K LahiriLaboratory of Molecular Neurogenetics, Department of Psychiatry, Institute of Psychiatric Research, Indiana University School of Medicine, Indianapolis, IN 46202, USA. dlahiri@iupui.edu
B Maloney
N H Zawia

Funding

Regulation of APP Pathway Gene Promoters in Alzheimer'sR01AG018379 · NIA · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI LAHIRI, DEBOMOY K · 2000 to 2011
$3.1M
Mechanisms of Cholinesterase Inhibitors on Beta-amyloidR01AG018884 · NIA · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI LAHIRI, DEBOMOY K · 2002 to 2012
$2.9M
NIA NIH HHS AG18379NIA NIH HHS AG18884NIA NIH HHS R01 AG018379NIA NIH HHS R01 AG018884
6 · The paper itself

Abstract

Neurobiological disorders have diverse manifestations and symptomology. Neurodegenerative disorders, such as Alzheimer's disease, manifest late in life and are characterized by, among other symptoms, progressive loss of synaptic markers. Developmental disorders, such as autism spectrum, appear in childhood. Neuropsychiatric and affective disorders, such as schizophrenia and major depressive disorder, respectively, have broad ranges of age of onset and symptoms. However, all share uncertain etiologies, with opaque relationships between genes and environment. We propose a 'Latent Early-life Associated Regulation' (LEARn) model, positing latent changes in expression of specific genes initially primed at the developmental stage of life. In this model, environmental agents epigenetically disturb gene regulation in a long-term manner, beginning at early developmental stages, but these perturbations might not have pathological results until significantly later in life. The LEARn model operates through the regulatory region (promoter) of the gene, specifically through changes in methylation and oxidation status within the promoter of specific genes. The LEARn model combines genetic and environmental risk factors in an epigenetic pathway to explain the etiology of the most common, that is, sporadic, forms of neurobiological disorders.

Indexed as

Epigenesis, GeneticModels, BiologicalAge of OnsetDisease ProgressionEnvironmentGene ExpressionHumansNervous System DiseasesRisk Factors

Identifiers

PMID19851280
PMCPMC5875732

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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.