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The genome‐wide DNA methylation profiles among neurosurgery patients with and without post‐operative delirium.

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Title: The genome‐wide DNA methylation profiles among neurosurgery patients with and without post‐operative delirium.
Authors: Yamanashi, Takehiko (AUTHOR), Crutchley, Kaitlyn J. (AUTHOR), Wahba, Nadia E. (AUTHOR), Nagao, Takaaki (AUTHOR), Marra, Pedro S. (AUTHOR), Akers, Cade C. (AUTHOR), Sullivan, Eleanor J. (AUTHOR), Iwata, Masaaki (AUTHOR), Howard, Mathew A (AUTHOR), Cho, Hyunkeun R. (AUTHOR), Kawasaki, Hiroto (AUTHOR), Hughes, Christopher G. (AUTHOR), Pandharipande, Pratik P. (AUTHOR), Hefti, Marco M. (AUTHOR), Shinozaki, Gen (AUTHOR)
Source: Psychiatry & Clinical Neurosciences. Jan2023, Vol. 77 Issue 1, p48-55. 8p. 4 Charts.
Subjects: DNA methylation, Delirium, Neurosurgery, Immune response, Cellular control mechanisms, Immunoregulation, Shotgun sequencing
Abstract: Aims: There is no previous study demonstrating the differences of genome‐wide DNA methylation (DNAm) profiles between patients with and without postoperative delirium (POD). We aimed to discover epigenetic (DNAm) markers that are associated with POD in blood obtained from patients before and after neurosurgery. Methods: Pre‐ and post‐surgical blood DNA samples from 37 patients, including 10 POD cases, were analyzed using the Illumina EPIC array genome‐wide platform. We examined DNAm differences in blood from patients with and without POD. Enrichment analysis with Gene Ontology and Kyoto Encyclopedia of Genes and Genomes terms were also conducted. Results: When POD cases were tested for DNAm change before and after surgery, enrichment analyses showed many relevant signals with statistical significance in immune response related‐pathways and inflammatory cytokine related‐pathways such as "cellular response to cytokine stimulus", "regulation of immune system process", "regulation of cell activation", and "regulation of cytokine production". Furthermore, after excluding the potential effect of common factors related to surgery and anesthesia between POD cases and non‐POD controls, the enrichment analyses showed significant signals such as "immune response" and "T cell activation", which are same pathways previously identified from an independent non‐surgical inpatient cohort. Conclusions: Our first genome‐wide DNAm investigation of POD showed promising signals related to immune response, inflammatory response and other relevant signals considered to be associated with delirium pathophysiology. Our data supports the hypothesis that epigenetics play an important role in the pathophysiological mechanism of delirium and suggest the potential usefulness of an epigenetics‐based biomarker of POD. [ABSTRACT FROM AUTHOR]
Copyright of Psychiatry & Clinical Neurosciences is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: The genome‐wide DNA methylation profiles among neurosurgery patients with and without post‐operative delirium.
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  Data: <searchLink fieldCode="AR" term="%22Yamanashi%2C+Takehiko%22">Yamanashi, Takehiko</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Crutchley%2C+Kaitlyn+J%2E%22">Crutchley, Kaitlyn J.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wahba%2C+Nadia+E%2E%22">Wahba, Nadia E.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nagao%2C+Takaaki%22">Nagao, Takaaki</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Marra%2C+Pedro+S%2E%22">Marra, Pedro S.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Akers%2C+Cade+C%2E%22">Akers, Cade C.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sullivan%2C+Eleanor+J%2E%22">Sullivan, Eleanor J.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Iwata%2C+Masaaki%22">Iwata, Masaaki</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Howard%2C+Mathew+A%22">Howard, Mathew A</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cho%2C+Hyunkeun+R%2E%22">Cho, Hyunkeun R.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kawasaki%2C+Hiroto%22">Kawasaki, Hiroto</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hughes%2C+Christopher+G%2E%22">Hughes, Christopher G.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pandharipande%2C+Pratik+P%2E%22">Pandharipande, Pratik P.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hefti%2C+Marco+M%2E%22">Hefti, Marco M.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shinozaki%2C+Gen%22">Shinozaki, Gen</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Psychiatry+%26+Clinical+Neurosciences%22">Psychiatry & Clinical Neurosciences</searchLink>. Jan2023, Vol. 77 Issue 1, p48-55. 8p. 4 Charts.
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  Data: <searchLink fieldCode="DE" term="%22DNA+methylation%22">DNA methylation</searchLink><br /><searchLink fieldCode="DE" term="%22Delirium%22">Delirium</searchLink><br /><searchLink fieldCode="DE" term="%22Neurosurgery%22">Neurosurgery</searchLink><br /><searchLink fieldCode="DE" term="%22Immune+response%22">Immune response</searchLink><br /><searchLink fieldCode="DE" term="%22Cellular+control+mechanisms%22">Cellular control mechanisms</searchLink><br /><searchLink fieldCode="DE" term="%22Immunoregulation%22">Immunoregulation</searchLink><br /><searchLink fieldCode="DE" term="%22Shotgun+sequencing%22">Shotgun sequencing</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Aims: There is no previous study demonstrating the differences of genome‐wide DNA methylation (DNAm) profiles between patients with and without postoperative delirium (POD). We aimed to discover epigenetic (DNAm) markers that are associated with POD in blood obtained from patients before and after neurosurgery. Methods: Pre‐ and post‐surgical blood DNA samples from 37 patients, including 10 POD cases, were analyzed using the Illumina EPIC array genome‐wide platform. We examined DNAm differences in blood from patients with and without POD. Enrichment analysis with Gene Ontology and Kyoto Encyclopedia of Genes and Genomes terms were also conducted. Results: When POD cases were tested for DNAm change before and after surgery, enrichment analyses showed many relevant signals with statistical significance in immune response related‐pathways and inflammatory cytokine related‐pathways such as "cellular response to cytokine stimulus", "regulation of immune system process", "regulation of cell activation", and "regulation of cytokine production". Furthermore, after excluding the potential effect of common factors related to surgery and anesthesia between POD cases and non‐POD controls, the enrichment analyses showed significant signals such as "immune response" and "T cell activation", which are same pathways previously identified from an independent non‐surgical inpatient cohort. Conclusions: Our first genome‐wide DNAm investigation of POD showed promising signals related to immune response, inflammatory response and other relevant signals considered to be associated with delirium pathophysiology. Our data supports the hypothesis that epigenetics play an important role in the pathophysiological mechanism of delirium and suggest the potential usefulness of an epigenetics‐based biomarker of POD. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Psychiatry & Clinical Neurosciences is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/pcn.13495
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      – Code: eng
        Text: English
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      – SubjectFull: DNA methylation
        Type: general
      – SubjectFull: Delirium
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      – SubjectFull: Neurosurgery
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      – SubjectFull: Immune response
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      – SubjectFull: Cellular control mechanisms
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      – SubjectFull: Immunoregulation
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      – SubjectFull: Shotgun sequencing
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              Text: Jan2023
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