Cited by 43Epigenetics and DNA MethylationMemory and Neural MechanismsAnxiety, Depression, Psychometrics, Treatment, Cognitive Processes

Plasticity of Functional MAOA Gene Methylation in Acrophobia

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Schiele, Miriam A, Ziegler, Christiane, Kollert, Leonie, Katzorke, Andrea, Schartner, Christoph, Busch, Yasmin, Gromer, Daniel, Reif, Andreas +4 more·2018·International Journal of Neuropsychopharmacology

Abstract

Epigenetic mechanisms have been proposed to mediate fear extinction in animal models. Here, MAOA methylation was analyzed via direct sequencing of sodium bisulfite-treated DNA extracted from blood cells before and after a 2-week exposure therapy in a sample of n = 28 female patients with acrophobia as well as in n = 28 matched healthy female controls. Clinical response was measured using the Acrophobia Questionnaire and the Attitude Towards Heights Questionnaire. The functional relevance of altered MAOA methylation was investigated by luciferase-based reporter gene assays. MAOA methylation was found to be significantly decreased in patients with acrophobia compared with healthy controls. Furthermore, MAOA methylation levels were shown to significantly increase after treatment and correlate with treatment response as reflected by decreasing Acrophobia Questionnaire/Attitude Towards Heights Questionnaire scores. Functional analyses revealed decreased reporter gene activity in presence of methylated compared with unmethylated pCpGfree_MAOA reporter gene vector constructs. The present proof-of-concept psychotherapy-epigenetic study for the first time suggests functional MAOA methylation changes as a potential epigenetic correlate of treatment response in acrophobia and fosters further investigation into the notion of epigenetic mechanisms underlying fear extinction.

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  • In candidate gene studies in anxiety disorders, the evidence points at a pattern of MAO-A hypomethylation, as shown in acrophobia and OCD.

    “in candidate gene studies in anxiety disorders, the evidence points at a pattern of hypomethylation (Ziegler et al., 2016) as shown in acrophobia (Schiele et al., 2018) and obsessive compulsive disorder (OCD) (Domschke et al., 2012).”

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Authors
Schiele, M. A., Ziegler, C., Kollert, L., Katzorke, A., Schartner, C., Busch, Y., Gromer, D., Reif, A., Pauli, P., Deckert, J., Herrmann, M. J., & Domschke, K.
Affiliations
  • University of Freiburg (DE)
  • University of Würzburg (DE)
  • University of California, San Francisco (US)
  • Goethe University Frankfurt (DE)
Corresponding author
Domschke, Katharina
Venue
International Journal of Neuropsychopharmacology
Published
2018-05-31
Volume
21
Issue
9
Pages
822-827
ISSN
  • 1461-1457 (ISSN-L)
  • 1469-5111
OpenAlex
W2807182490
Cited by
43
References
3
Citations by year
2026: 2 · 2025: 4 · 2024: 2 · 2023: 2 · 2022: 6 · 2021: 5 · 2020: 13 · 2019: 6 · 2018: 3
FWCI
2.40
Type
journal article
Language
en
Open access
Locations
  • The International Journal of Neuropsychopharmacology (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Online Publication Service of Würzburg University (Würzburg University) (submittedVersion, cc-by-nc)
Funders
  • German Research Foundation (SFB-TRR-58)
  • German Ministry of Research and Education (01EE1402F)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
Keywords
acrophobia, monoamine oxidase A, DNA methylation, epigenetics, fear extinction, exposure therapy, treatment response, psychotherapy response, CpG methylation, luciferase reporter assay, female patients, fear of heights
MeSH terms
Adult, Anxiety, Extinction, Psychological, Female, Humans, Implosive Therapy, Middle Aged, Monoamine Oxidase, Phobic Disorders, Treatment Outcome, CpG Islands, DNA Methylation, Epigenesis, Genetic

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