Hippocampal abnormalities of glutamate/glutamine, N -acetylaspartate and choline in patients with depression are related to past illness burden

Background Smaller hippocampal volumes in major depressive disorder (MDD) have been linked with earlier onset, previous recurrences and treatment refractoriness. The aim of our study was to investigate metabolite abnormalities in the hippocampus associated with past depressive illness burden. Method...

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Veröffentlicht in:Journal of psychiatry & neuroscience 2013-03, Vol.38 (2), p.107-116
Hauptverfasser: de Diego-Adeliño, Javier, MD, Portella, Maria J., PhD, Puigdemont, Dolors, MD, Pérez-Egea, Rosario, MD, Pérez, Víctor, MD, PhD, Gómez-Ansón, Beatriz, MD, PhD, López-Moruelo, Olga, BSc, Serra-Blasco, Maria, BSc, Vives, Yolanda, PhD
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container_end_page 116
container_issue 2
container_start_page 107
container_title Journal of psychiatry & neuroscience
container_volume 38
creator de Diego-Adeliño, Javier, MD
Portella, Maria J., PhD
Puigdemont, Dolors, MD
Pérez-Egea, Rosario, MD
Pérez, Víctor, MD, PhD
Gómez-Ansón, Beatriz, MD, PhD
López-Moruelo, Olga, BSc
Serra-Blasco, Maria, BSc
Vives, Yolanda, PhD
description Background Smaller hippocampal volumes in major depressive disorder (MDD) have been linked with earlier onset, previous recurrences and treatment refractoriness. The aim of our study was to investigate metabolite abnormalities in the hippocampus associated with past depressive illness burden. Methods Glutamate/glutamine (Glx), N -acetylaspartate (NAA) and choline (Cho), potential markers of glial/neuronal integrity and membrane turnover, respectively, were measured in adults with depression and healthy controls using a 3 T magnetic resonance spectroscopy scanner. Voxels were placed in the head of the right and left hippocampus. We controlled for systematic differences resulting from volume-of-interest (VOI) tissue composition and total hippocampal volume. Results Our final sample comprised a total of 16 healthy controls and 52 adult patients with depression in different stages of the illness (20 treatment-resistant/chronic, 18 remitted-recurrent and 14 first-episode), comparable for age and sex distribution. Patients with treatment-resistant/chronic and remitted-recurrent depression had significantly lower levels of Glx and NAA than controls, especially in the right hippocampal region ( p ≤ 0.025). Diminished levels of Glx were correlated with longer illness duration (left VOI r = −0.34, p = 0.01). By contrast, Cho levels were significantly higher in patients with treatment-resistant/chronic depression than those with first-episode depression or controls in the right and left hippocampus (up to 19% higher; all p ≤ 0.025) and were consistently related to longer illness duration (right VOI r = 0.30, p = 0.028; left VOI r = 0.38, p = 0.004) and more previous episodes (right VOI r = 0.46, p = 0.001; left VOI r = 0.44, p = 0.001). Limitations The cross-sectional design and the inclusion of treated patients are the main limitations of the study. Conclusion Our results support that metabolite alterations within the hippocampus are more pronounced in patients with a clinical evolution characterized by recurrences and/or chronicity and add further evidence to the potential deleterious effects of stress and depression on this region.
doi_str_mv 10.1503/jpn.110185
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The aim of our study was to investigate metabolite abnormalities in the hippocampus associated with past depressive illness burden. Methods Glutamate/glutamine (Glx), N -acetylaspartate (NAA) and choline (Cho), potential markers of glial/neuronal integrity and membrane turnover, respectively, were measured in adults with depression and healthy controls using a 3 T magnetic resonance spectroscopy scanner. Voxels were placed in the head of the right and left hippocampus. We controlled for systematic differences resulting from volume-of-interest (VOI) tissue composition and total hippocampal volume. Results Our final sample comprised a total of 16 healthy controls and 52 adult patients with depression in different stages of the illness (20 treatment-resistant/chronic, 18 remitted-recurrent and 14 first-episode), comparable for age and sex distribution. Patients with treatment-resistant/chronic and remitted-recurrent depression had significantly lower levels of Glx and NAA than controls, especially in the right hippocampal region ( p ≤ 0.025). Diminished levels of Glx were correlated with longer illness duration (left VOI r = −0.34, p = 0.01). By contrast, Cho levels were significantly higher in patients with treatment-resistant/chronic depression than those with first-episode depression or controls in the right and left hippocampus (up to 19% higher; all p ≤ 0.025) and were consistently related to longer illness duration (right VOI r = 0.30, p = 0.028; left VOI r = 0.38, p = 0.004) and more previous episodes (right VOI r = 0.46, p = 0.001; left VOI r = 0.44, p = 0.001). Limitations The cross-sectional design and the inclusion of treated patients are the main limitations of the study. Conclusion Our results support that metabolite alterations within the hippocampus are more pronounced in patients with a clinical evolution characterized by recurrences and/or chronicity and add further evidence to the potential deleterious effects of stress and depression on this region.</description><identifier>ISSN: 1180-4882</identifier><identifier>EISSN: 1488-2434</identifier><identifier>DOI: 10.1503/jpn.110185</identifier><identifier>PMID: 23425950</identifier><identifier>CODEN: JPNEEF</identifier><language>eng</language><publisher>Ottawa, ON: Canadian Medical Association</publisher><subject>Adult ; Adult and adolescent clinical studies ; Aspartate ; Aspartic Acid - analogs &amp; derivatives ; Aspartic Acid - metabolism ; Biological and medical sciences ; Brain research ; Case-Control Studies ; Choline - metabolism ; Cost of Illness ; Cross-Sectional Studies ; Depression ; Depressive Disorder, Major - metabolism ; Development and progression ; Female ; Fundamental and applied biological sciences. Psychology ; Glutamate ; Glutamic Acid - metabolism ; Glutamine - metabolism ; Health aspects ; Hippocampus (Brain) ; Hippocampus - metabolism ; Humans ; Magnetic Resonance Spectroscopy - methods ; Major depressive disorder ; Male ; Medical Education ; Medical sciences ; Mental depression ; Metabolites ; Middle Aged ; Mood disorders ; Physiological aspects ; Psychiatry ; Psychoanalysis ; Psychology. Psychoanalysis. Psychiatry ; Psychology. Psychophysiology ; Psychopathology. 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The aim of our study was to investigate metabolite abnormalities in the hippocampus associated with past depressive illness burden. Methods Glutamate/glutamine (Glx), N -acetylaspartate (NAA) and choline (Cho), potential markers of glial/neuronal integrity and membrane turnover, respectively, were measured in adults with depression and healthy controls using a 3 T magnetic resonance spectroscopy scanner. Voxels were placed in the head of the right and left hippocampus. We controlled for systematic differences resulting from volume-of-interest (VOI) tissue composition and total hippocampal volume. Results Our final sample comprised a total of 16 healthy controls and 52 adult patients with depression in different stages of the illness (20 treatment-resistant/chronic, 18 remitted-recurrent and 14 first-episode), comparable for age and sex distribution. Patients with treatment-resistant/chronic and remitted-recurrent depression had significantly lower levels of Glx and NAA than controls, especially in the right hippocampal region ( p ≤ 0.025). Diminished levels of Glx were correlated with longer illness duration (left VOI r = −0.34, p = 0.01). By contrast, Cho levels were significantly higher in patients with treatment-resistant/chronic depression than those with first-episode depression or controls in the right and left hippocampus (up to 19% higher; all p ≤ 0.025) and were consistently related to longer illness duration (right VOI r = 0.30, p = 0.028; left VOI r = 0.38, p = 0.004) and more previous episodes (right VOI r = 0.46, p = 0.001; left VOI r = 0.44, p = 0.001). Limitations The cross-sectional design and the inclusion of treated patients are the main limitations of the study. Conclusion Our results support that metabolite alterations within the hippocampus are more pronounced in patients with a clinical evolution characterized by recurrences and/or chronicity and add further evidence to the potential deleterious effects of stress and depression on this region.</description><subject>Adult</subject><subject>Adult and adolescent clinical studies</subject><subject>Aspartate</subject><subject>Aspartic Acid - analogs &amp; derivatives</subject><subject>Aspartic Acid - metabolism</subject><subject>Biological and medical sciences</subject><subject>Brain research</subject><subject>Case-Control Studies</subject><subject>Choline - metabolism</subject><subject>Cost of Illness</subject><subject>Cross-Sectional Studies</subject><subject>Depression</subject><subject>Depressive Disorder, Major - metabolism</subject><subject>Development and progression</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Glutamate</subject><subject>Glutamic Acid - metabolism</subject><subject>Glutamine - metabolism</subject><subject>Health aspects</subject><subject>Hippocampus (Brain)</subject><subject>Hippocampus - metabolism</subject><subject>Humans</subject><subject>Magnetic Resonance Spectroscopy - methods</subject><subject>Major depressive disorder</subject><subject>Male</subject><subject>Medical Education</subject><subject>Medical sciences</subject><subject>Mental depression</subject><subject>Metabolites</subject><subject>Middle Aged</subject><subject>Mood disorders</subject><subject>Physiological aspects</subject><subject>Psychiatry</subject><subject>Psychoanalysis</subject><subject>Psychology. Psychoanalysis. Psychiatry</subject><subject>Psychology. Psychophysiology</subject><subject>Psychopathology. 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Psychology</topic><topic>Glutamate</topic><topic>Glutamic Acid - metabolism</topic><topic>Glutamine - metabolism</topic><topic>Health aspects</topic><topic>Hippocampus (Brain)</topic><topic>Hippocampus - metabolism</topic><topic>Humans</topic><topic>Magnetic Resonance Spectroscopy - methods</topic><topic>Major depressive disorder</topic><topic>Male</topic><topic>Medical Education</topic><topic>Medical sciences</topic><topic>Mental depression</topic><topic>Metabolites</topic><topic>Middle Aged</topic><topic>Mood disorders</topic><topic>Physiological aspects</topic><topic>Psychiatry</topic><topic>Psychoanalysis</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychology. Psychophysiology</topic><topic>Psychopathology. 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The aim of our study was to investigate metabolite abnormalities in the hippocampus associated with past depressive illness burden. Methods Glutamate/glutamine (Glx), N -acetylaspartate (NAA) and choline (Cho), potential markers of glial/neuronal integrity and membrane turnover, respectively, were measured in adults with depression and healthy controls using a 3 T magnetic resonance spectroscopy scanner. Voxels were placed in the head of the right and left hippocampus. We controlled for systematic differences resulting from volume-of-interest (VOI) tissue composition and total hippocampal volume. Results Our final sample comprised a total of 16 healthy controls and 52 adult patients with depression in different stages of the illness (20 treatment-resistant/chronic, 18 remitted-recurrent and 14 first-episode), comparable for age and sex distribution. Patients with treatment-resistant/chronic and remitted-recurrent depression had significantly lower levels of Glx and NAA than controls, especially in the right hippocampal region ( p ≤ 0.025). Diminished levels of Glx were correlated with longer illness duration (left VOI r = −0.34, p = 0.01). By contrast, Cho levels were significantly higher in patients with treatment-resistant/chronic depression than those with first-episode depression or controls in the right and left hippocampus (up to 19% higher; all p ≤ 0.025) and were consistently related to longer illness duration (right VOI r = 0.30, p = 0.028; left VOI r = 0.38, p = 0.004) and more previous episodes (right VOI r = 0.46, p = 0.001; left VOI r = 0.44, p = 0.001). Limitations The cross-sectional design and the inclusion of treated patients are the main limitations of the study. Conclusion Our results support that metabolite alterations within the hippocampus are more pronounced in patients with a clinical evolution characterized by recurrences and/or chronicity and add further evidence to the potential deleterious effects of stress and depression on this region.</abstract><cop>Ottawa, ON</cop><pub>Canadian Medical Association</pub><pmid>23425950</pmid><doi>10.1503/jpn.110185</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record>
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source MEDLINE; EZB-FREE-00999 freely available EZB journals; PubMed Central
subjects Adult
Adult and adolescent clinical studies
Aspartate
Aspartic Acid - analogs & derivatives
Aspartic Acid - metabolism
Biological and medical sciences
Brain research
Case-Control Studies
Choline - metabolism
Cost of Illness
Cross-Sectional Studies
Depression
Depressive Disorder, Major - metabolism
Development and progression
Female
Fundamental and applied biological sciences. Psychology
Glutamate
Glutamic Acid - metabolism
Glutamine - metabolism
Health aspects
Hippocampus (Brain)
Hippocampus - metabolism
Humans
Magnetic Resonance Spectroscopy - methods
Major depressive disorder
Male
Medical Education
Medical sciences
Mental depression
Metabolites
Middle Aged
Mood disorders
Physiological aspects
Psychiatry
Psychoanalysis
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Psychopathology. Psychiatry
Research Papers
Studies
title Hippocampal abnormalities of glutamate/glutamine, N -acetylaspartate and choline in patients with depression are related to past illness burden
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