Impact of FAAH genetic variation on fronto-amygdala function during emotional processing
Recent translational studies identified a common endocannabinoid polymorphism, FAAH C385A, in the gene for the fatty acid amide hydrolase (FAAH). This polymorphism alters endocannabinoid anandamide levels, which are known to be involved in the fronto-amygdala circuitry implicated in mood regulation...
Gespeichert in:
| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2019
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| In: |
European archives of psychiatry and clinical neuroscience
Year: 2018, Jahrgang: 269, Heft: 2, Pages: 209-221 |
| ISSN: | 1433-8491 |
| DOI: | 10.1007/s00406-018-0944-9 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1007/s00406-018-0944-9
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| Verfasserangaben: | Anne Gärtner, Denise Dörfel, Kersten Diers, Stephanie H. Witt, Alexander Strobel, Burkhard Brocke |
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| 245 | 1 | 0 | |a Impact of FAAH genetic variation on fronto-amygdala function during emotional processing |c Anne Gärtner, Denise Dörfel, Kersten Diers, Stephanie H. Witt, Alexander Strobel, Burkhard Brocke |
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| 520 | |a Recent translational studies identified a common endocannabinoid polymorphism, FAAH C385A, in the gene for the fatty acid amide hydrolase (FAAH). This polymorphism alters endocannabinoid anandamide levels, which are known to be involved in the fronto-amygdala circuitry implicated in mood regulation and anxiety-like behaviors. While it has been shown that the variant that selectively enhances fronto-amygdala connectivity at rest is associated with decreased anxiety-like behaviors, no study so far has investigated whether this finding of FAAH-related differential plasticity extends to task-related differential functional expression and regulation during negative emotional processing. Using an imaging genetics approach, this study aimed to replicate and extend prior findings by examining functional activity and task-related connectivity in fronto-amygdala regions during emotion reactivity and emotional down-regulation of negative affect. Therefore, 48 healthy young adults underwent a functional MRI resting state measurement, completed an emotion regulation paradigm and provided self-reports on anxiety and use of emotion regulation strategies. In line with previous studies, preliminary evidence suggests that A-allele carriers demonstrate stronger fronto-amygdala connectivity during rest. In addition, exploratory whole-brain analyses indicate differential functional activity of A-allele carriers during emotion reactivity and emotion regulation. There were no associations with anxiety-related self-reports and use of emotional regulation strategies. Further research using larger samples and polygenic approaches is indicated to clarify the precise role and its underlying mechanisms in emotion processing. | ||
| 534 | |c 2018 | ||
| 650 | 4 | |a Amygdala | |
| 650 | 4 | |a Emotion reactivity | |
| 650 | 4 | |a Emotion regulation | |
| 650 | 4 | |a FAAH C385A | |
| 650 | 4 | |a fMRI | |
| 650 | 4 | |a Fronto-amygdala | |
| 650 | 4 | |a Functional connectivity | |
| 650 | 4 | |a Genetics | |
| 650 | 4 | |a Individual differences | |
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