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Epigenetic analysis confirms no accelerated brain aging in schizophrenia
Joanne Voisey1, Bruce R Lawford2, C Phillip Morris1
1School of Biomedical Sciences, Faculty of Health, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.
Epigenetic aging in schizophrenia was investigated using DNA methylation. No significant age acceleration was found in the frontal cortex of schizophrenia patients compared to controls in two independent datasets.
Area of Science:
- Neuroscience
- Genetics
- Psychiatry
Background:
- Epigenetic aging, a biological process, is linked to various diseases and biological mechanisms.
- Schizophrenia is a complex psychiatric disorder with potential links to aging processes.
Purpose of the Study:
- To investigate epigenetic aging in the brain, specifically in individuals with schizophrenia.
- To determine if DNA methylation age acceleration differs between schizophrenia cases and healthy controls.
Main Methods:
- Assessed two independent brain datasets (n=48 and n=392) including frontal cortex samples.
- Calculated DNA methylation age and compared it to chronological age.
- Analyzed DNA methylation age acceleration in schizophrenia cases versus controls.
Main Results:
- DNA methylation age in the frontal cortex was significantly correlated with chronological age in both datasets.
- No significant differences in DNA methylation age acceleration were observed between schizophrenia cases and controls.
- Findings align with previous research on schizophrenia and epigenetic aging in the superior temporal gyrus.
Conclusions:
- Epigenetic aging, as measured by DNA methylation age in the frontal cortex, does not appear to be significantly accelerated in schizophrenia.
- Further research is needed to explore epigenetic aging in different brain regions and specific cell types in schizophrenia.
- Investigating cellular heterogeneity may provide deeper insights into brain aging in psychiatric disorders.
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