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Peripheral antioxidant markers are associated with total hippocampal and CA3/dentate gyrus volume in MDD and healthy controls-preliminary findings.

Lindqvist, Daniel LU ; Mueller, Susanne; Mellon, Synthia H; Su, Yali; Epel, Elissa S; Reus, Victor I; Rosser, Rebecca; Mahan, Laura; Mackin, R Scott and Yang, Tony T, et al. (2014) In Psychiatry Research 224(3). p.168-174
Abstract
Several psychiatric disorders, including major depressive disorder (MDD), are associated with increased blood markers of oxidative stress. The relevance of this to the oxidation-sensitive hippocampus (HC) is unknown. We investigated the relationship between peripheral oxidative stress markers and HC volume in unmedicated individuals with MDD (n=16) and healthy controls (n=19). To conserve power, our primary analysis was carried out in the combined group of subjects, and secondary analyses examined each group separately. Oxidative stress markers (oxidized glutathione (GSSG)) and antioxidants (reduced glutathione (GSH), glutathione peroxidase (Gpx), and Vitamin C) were assessed, and a "total net antioxidant score" was calculated. 4-T MRI... (More)
Several psychiatric disorders, including major depressive disorder (MDD), are associated with increased blood markers of oxidative stress. The relevance of this to the oxidation-sensitive hippocampus (HC) is unknown. We investigated the relationship between peripheral oxidative stress markers and HC volume in unmedicated individuals with MDD (n=16) and healthy controls (n=19). To conserve power, our primary analysis was carried out in the combined group of subjects, and secondary analyses examined each group separately. Oxidative stress markers (oxidized glutathione (GSSG)) and antioxidants (reduced glutathione (GSH), glutathione peroxidase (Gpx), and Vitamin C) were assessed, and a "total net antioxidant score" was calculated. 4-T MRI estimated total HC volume and HC subfield (CA1, CA1-CA2 transition zone, subiculum and CA3/dentate gyrus [CA3&DG]) volumes. Across groups, the antioxidant score was significantly and positively correlated with total HC volume and CA3&DG subfield volume (normalized to total intracranial volume), adjusting for age and sex. Similar relationships were observed in each individual group but missed statistical significance, likely due to type II errors, with the exception of a significant correlation between the antioxidant score and CA3&DG volume in the MDD group. These preliminary data are consistent with oxidative stress being associated with smaller total HC and CA3&DG subfield volumes. (Less)
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Contribution to journal
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published
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Psychiatry Research
volume
224
issue
3
pages
168 - 174
publisher
Elsevier
external identifiers
  • pmid:25266915
  • wos:000345527900004
  • scopus:84945486783
ISSN
1872-7123
DOI
10.1016/j.pscychresns.2014.09.002
language
English
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yes
id
72eab0e0-8175-489d-b648-20b268998cdc (old id 4738804)
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http://www.ncbi.nlm.nih.gov/pubmed/25266915?dopt=Abstract
date added to LUP
2014-11-04 18:36:40
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2017-08-20 03:20:20
@article{72eab0e0-8175-489d-b648-20b268998cdc,
  abstract     = {Several psychiatric disorders, including major depressive disorder (MDD), are associated with increased blood markers of oxidative stress. The relevance of this to the oxidation-sensitive hippocampus (HC) is unknown. We investigated the relationship between peripheral oxidative stress markers and HC volume in unmedicated individuals with MDD (n=16) and healthy controls (n=19). To conserve power, our primary analysis was carried out in the combined group of subjects, and secondary analyses examined each group separately. Oxidative stress markers (oxidized glutathione (GSSG)) and antioxidants (reduced glutathione (GSH), glutathione peroxidase (Gpx), and Vitamin C) were assessed, and a "total net antioxidant score" was calculated. 4-T MRI estimated total HC volume and HC subfield (CA1, CA1-CA2 transition zone, subiculum and CA3/dentate gyrus [CA3&DG]) volumes. Across groups, the antioxidant score was significantly and positively correlated with total HC volume and CA3&DG subfield volume (normalized to total intracranial volume), adjusting for age and sex. Similar relationships were observed in each individual group but missed statistical significance, likely due to type II errors, with the exception of a significant correlation between the antioxidant score and CA3&DG volume in the MDD group. These preliminary data are consistent with oxidative stress being associated with smaller total HC and CA3&DG subfield volumes.},
  author       = {Lindqvist, Daniel and Mueller, Susanne and Mellon, Synthia H and Su, Yali and Epel, Elissa S and Reus, Victor I and Rosser, Rebecca and Mahan, Laura and Mackin, R Scott and Yang, Tony T and Wolkowitz, Owen M},
  issn         = {1872-7123},
  language     = {eng},
  number       = {3},
  pages        = {168--174},
  publisher    = {Elsevier},
  series       = {Psychiatry Research},
  title        = {Peripheral antioxidant markers are associated with total hippocampal and CA3/dentate gyrus volume in MDD and healthy controls-preliminary findings.},
  url          = {http://dx.doi.org/10.1016/j.pscychresns.2014.09.002},
  volume       = {224},
  year         = {2014},
}