Hippocampal and Amygdala Changes in Patients With Major Depressive Disorder and Healthy Controls During a 1-Year Follow-Up

AbstractMental health issues, including major depressive disorder, which can lead to suicidal behavior, are considered by the World Health Organization as a major threat to global health. Alterations in neurotransmitter signaling, e.g., serotonin and glutamate, or inflammatory response have been linked to both MDD and suicide. Phosphodiesterase 8A (PDE8A) gene expression is significantly decreased in the temporal cortex of major depressive disorder (MDD) patients. PDE8A specifically hydrolyzes adenosine 3′,5′-cyclic monophosphate (cAMP), which is a key second messenger involved in inflammation, cognition, and chronic antidepressant treatment. Moreover, alterations of RNA editing in PDE8A mRNA has been described in the brain of depressed suicide decedents. Here, we investigated PDE8A A-to-I RNA editing-related modifications in whole blood of depressed patients and suicide attempters compared to age-matched and sex-matched healthy controls. We report significant alterations of RNA editing of PDE8A in the blood of depressed patients and suicide attempters with major depression, for which the suicide attempt took place during the last month before sample collection. The reported RNA editing modifications in whole blood were similar to the changes observed in the brain of suicide decedents. Furthermore, analysis and combinations of different edited isoforms allowed us to discriminate between suicide attempters and control groups. Altogether, our results identify PDE8A as an immune response-related marker whose RNA editing modifications translate from brain to blood, suggesting that monitoring RNA editing in PDE8A in blood samples could help to evaluate depressive state and suicide risk.

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Factors associated with the onset of major depressive disorder in adults with type 2 diabetes living in 12 different countries: results from the INTERPRET-DD prospective study

Epidemiology and Psychiatric Sciences ◽

10.1017/s2045796020000438 ◽

2020 ◽

Vol 29 ◽

Author(s):

C. E. Lloyd ◽

N. Sartorius ◽

H. U. Ahmed ◽

A. Alvarez ◽

S. Bahendeka ◽

...

Keyword(s):

Type 2 Diabetes ◽

Major Depressive Disorder ◽

Depressive Symptoms ◽

Depressive Disorder ◽

Life Events ◽

Stressful Life Events ◽

Regression Analyses ◽

Major Depressive

Abstract Aims To examine the factors that are associated with changes in depression in people with type 2 diabetes living in 12 different countries. Methods People with type 2 diabetes treated in out-patient settings aged 18–65 years underwent a psychiatric assessment to diagnose major depressive disorder (MDD) at baseline and follow-up. At both time points, participants completed the Patient Health Questionnaire (PHQ-9), the WHO five-item Well-being scale (WHO-5) and the Problem Areas in Diabetes (PAID) scale which measures diabetes-related distress. A composite stress score (CSS) (the occurrence of stressful life events and their reported degree of ‘upset’) between baseline and follow-up was calculated. Demographic data and medical record information were collected. Separate regression analyses were conducted with MDD and PHQ-9 scores as the dependent variables. Results In total, there were 7.4% (120) incident cases of MDD with 81.5% (1317) continuing to remain free of a diagnosis of MDD. Univariate analyses demonstrated that those with MDD were more likely to be female, less likely to be physically active, more likely to have diabetes complications at baseline and have higher CSS. Mean scores for the WHO-5, PAID and PHQ-9 were poorer in those with incident MDD compared with those who had never had a diagnosis of MDD. Regression analyses demonstrated that higher PHQ-9, lower WHO-5 scores and greater CSS were significant predictors of incident MDD. Significant predictors of PHQ-9 were baseline PHQ-9 score, WHO-5, PAID and CSS. Conclusion This study demonstrates the importance of psychosocial factors in addition to physiological variables in the development of depressive symptoms and incident MDD in people with type 2 diabetes. Stressful life events, depressive symptoms and diabetes-related distress all play a significant role which has implications for practice. A more holistic approach to care, which recognises the interplay of these psychosocial factors, may help to mitigate their impact on diabetes self-management as well as MDD, thus early screening and treatment for symptoms is recommended.

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P.2.110 Plasma ANP and BNP during exercise in patients with major depressive disorder and in healthy controls

European Neuropsychopharmacology ◽

10.1016/s0924-977x(05)80899-5 ◽

2005 ◽

Vol 15 ◽

pp. S439-S440

Keyword(s):

Major Depressive Disorder ◽

Depressive Disorder ◽

Healthy Controls ◽

Major Depressive

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Evaluation of psychosocial functioning in the acute treatment term of major depressive disorder: a 16-week multi-centered follow-up study

Asian Journal of Psychiatry ◽

10.1016/j.ajp.2021.102883 ◽

2021 ◽

pp. 102883

Author(s):

Neslihan ALTUNSOY ◽

Didem SÜCÜLLÜOĞLU DİKİCİ ◽

Fikret Poyraz ÇÖKMÜŞ ◽

Hüseyin Murat ÖZKAN ◽

Kadir AŞÇIBAŞI ◽

...

Keyword(s):

Major Depressive Disorder ◽

Depressive Disorder ◽

Psychosocial Functioning ◽

Acute Treatment ◽

Major Depressive ◽

Follow Up Study

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Hot and cold cognitive disturbances in antidepressant-free patients with major depressive disorder: a NeuroPharm study

Psychological Medicine ◽

10.1017/s0033291720000938 ◽

2020 ◽

pp. 1-10

Author(s):

V. H. Dam ◽

D. S. Stenbæk ◽

K. Köhler-Forsberg ◽

C. Ip ◽

B. Ozenne ◽

...

Keyword(s):

Working Memory ◽

Major Depressive Disorder ◽

Reaction Time ◽

Depressive Disorder ◽

Healthy Controls ◽

Cognitive Profiles ◽

Depression Severity ◽

Major Depressive ◽

Depressed Patients ◽

Cognitive Disturbances

Abstract Background Cognitive disturbances are common and disabling features of major depressive disorder (MDD). Previous studies provide limited insight into the co-occurrence of hot (emotion-dependent) and cold (emotion-independent) cognitive disturbances in MDD. Therefore, we here map both hot and cold cognition in depressed patients compared to healthy individuals. Methods We collected neuropsychological data from 92 antidepressant-free MDD patients and 103 healthy controls. All participants completed a comprehensive neuropsychological test battery assessing hot cognition including emotion processing, affective verbal memory and social cognition as well as cold cognition including verbal and working memory and reaction time. Results The depressed patients showed small to moderate negative affective biases on emotion processing outcomes, moderate increases in ratings of guilt and shame and moderate deficits in verbal and working memory as well as moderately slowed reaction time compared to healthy controls. We observed no correlations between individual cognitive tasks and depression severity in the depressed patients. Lastly, an exploratory cluster analysis suggested the presence of three cognitive profiles in MDD: one characterised predominantly by disturbed hot cognitive functions, one characterised predominantly by disturbed cold cognitive functions and one characterised by global impairment across all cognitive domains. Notably, the three cognitive profiles differed in depression severity. Conclusion We identified a pattern of small to moderate disturbances in both hot and cold cognition in MDD. While none of the individual cognitive outcomes mapped onto depression severity, cognitive profile clusters did. Overall cognition-based stratification tools may be useful in precision medicine approaches to MDD.

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Prefrontal cortex function in remitted major depressive disorder

Psychological Medicine ◽

10.1017/s0033291712002164 ◽

2012 ◽

Vol 43 (6) ◽

pp. 1219-1230 ◽

Cited By ~ 17

Author(s):

N. L. Nixon ◽

P. F. Liddle ◽

G. Worwood ◽

M. Liotti ◽

E. Nixon

Keyword(s):

Major Depressive Disorder ◽

Prefrontal Cortex ◽

Depressive Disorder ◽

Negative Feedback ◽

Affective State ◽

Recurrence Risk ◽

Anterior Cingulate ◽

Major Depressive ◽

Negative Experience

BackgroundRecent models of major depressive disorder (MDD) have proposed the rostral anterior cingulate (rACC) and dorsomedial prefrontal cortex (dmPFC) as nexus sites in the dysfunctional regulation of cognitive-affective state. Limited evidence from remitted-state MDD supports these theories by suggesting that aberrant neural activity proximal to the rACC and the dmPFC may play a role in vulnerability to recurrence/relapse within this disorder. Here we present a targeted analysis assessing functional activity within these two regions of interest (ROIs) for groups with identified vulnerability to MDD: first, remitted, high predicted recurrence-risk patients; and second, patients suffering observed 1-year recurrence.MethodBaseline T2* images sensitive to blood oxygen level-dependent (BOLD) contrast were acquired from patients and controls during a Go/No-Go (GNG) task incorporating negative feedback, with 1-year patient follow-up to identify recurrence. BOLD contrast data for error commission (EC) and visual negative feedback (VNF) were used in an ROI analysis based on rACC and dmPFC coordinates from the literature, comparing patientsversuscontrols and recurrenceversusnon-recurrenceversuscontrol groups.ResultsAnalysis of patients (n = 20)versuscontrols (n = 20) showed significant right dmPFC [Brodmann area (BA) 9] hypoactivity within the patient group, co-localized during EC and VNF, with additional significant rACC (BA 32) hypoactivity during EC. The results from the follow-up analysis were undermined by small groups and potential confounders but suggested persistent right dmPFC (BA 9) hypoactivity associated with 1-year recurrence.ConclusionsConvergent hypoactive right dmPFC (BA 9) processing of VNF and EC, possibly impairing adaptive reappraisal of negative experience, was associated most clearly with clinically predicted vulnerability to MDD.

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Comparison of frontal alpha asymmetry among schizophrenia patients, major depressive disorder patients, and healthy controls

10.21203/rs.3.rs-37400/v3 ◽

2020 ◽

Author(s):

Kuk-In Jang ◽

Chany Lee ◽

Sangmin Lee ◽

Seung Huh ◽

Jeong-Ho Chae

Keyword(s):

Major Depressive Disorder ◽

Depressive Disorder ◽

Left Hemisphere ◽

Rating Scales ◽

Healthy Controls ◽

Major Depressive ◽

Alpha Asymmetry ◽

Alpha Frequency ◽

Frontal Alpha Asymmetry ◽

The Difference

Abstract Background: Electroencephalography (EEG) frontal alpha asymmetry (FAA) has been observed in several psychiatric disorders. Dominance in left or right frontal alpha activity remains inconsistent in patients with major depressive disorder (MDD), patients with schizophrenia, and healthy controls. This study compared FAA among patients with MDD and schizophrenia, and healthy controls.Methods: We recruited 20 patients with MDD, 18 patients with schizophrenia, and 16 healthy individuals. The EEG alpha frequency ranged from 8 Hz to 12 Hz. FAA was expressed as the difference between absolute power values of right and left hemisphere electrodes in the alpha frequency range (common-log-transformed frontal right- and left-hemisphere electrodes: F4–F3, F8–F7, FP2–FP1, AF4–AF3, F6–F5, and F2–F1). Hamilton depression and anxiety rating scales were evaluated in patients with MDD. Positive and negative syndrome scales were evaluated in patients with schizophrenia.Results: Patients with schizophrenia showed significantly lower left FAA than healthy controls (F4–F3, schizophrenia vs. healthy controls: -0.10 ± 0.04 vs. -0.05 ± 0.05). There were no significant differences in FAA between patients with schizophrenia and MDD as well as between patients with MDD and healthy controls.Conclusions: The present study suggests that FAA indicates a relatively lower activation of left frontal electrodes in schizophrenia. The left-lateralized FAA could be a neuropathological attribute in patients with schizophrenia, but a lack of sample size and information such as medication and duration of illness might obscure the interpretation and generalization of our findings. Thus, further studies to verify the findings would be warranted.

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