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Updated: Aug 24, 2026
Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder
Published on: April 26, 2024
Correlation between cerebral blood flow and items of the Hamilton Rating Scale for Depression in antidepressant-naive
Ariel Graff-Guerrero1, Jorge González-Olvera, Yazmín Mendoza-Espinosa
1Instituto Nacional de Psiquiatría Ramón de la Fuente, Dirección de Servicios Clínicos, Calz. México-Xochimilco 101, Col. San Lorenzo Huipulco, Del. Tlalpan 14370, México D.F., Mexico. agraff@imp.edu.mx
Insights
This study explored the link between cerebral blood flow (CBF) and specific symptoms of major depressive disorder (MDD) using the Hamilton Rating Scale for Depression (HRSD). Findings suggest the frontal cortex is crucial for MDD symptom expression.
Area of Science:
- Neuroscience
- Psychiatry
- Medical Imaging
Background:
- Major Depressive Disorder (MDD) is a complex condition with varied symptom presentation.
- Understanding the neurobiological underpinnings of specific MDD symptoms is crucial for targeted treatments.
- Cerebral blood flow (CBF) patterns may reflect underlying pathophysiology in psychiatric disorders.
Purpose of the Study:
- To investigate the correlation between regional CBF and individual symptom scores in patients with MDD.
- To identify specific cerebral regions associated with distinct symptoms measured by the Hamilton Rating Scale for Depression (HRSD).
- To explore the role of frontocortical and limbic regions in the manifestation of depressive symptoms.
Main Methods:
- SPECT imaging was used to assess basal CBF in 14 antidepressant-naive MDD patients (HRSD score ≥20).
- SPM99 software analyzed CBF images, with a Z-score threshold of 2.25 and cluster size >10 voxels for significance.
- Statistical analysis focused on correlations between individual HRSD item scores and regional CBF.
Main Results:
- Positive correlations were observed between specific HRSD items (e.g., 1, 6, 11, 20) and the right medial frontal gyrus.
- Negative correlations were found between certain symptoms and regions including the left amygdala and bilateral insula.
- Other symptoms correlated with the medial cingulate and precentral frontal gyri, indicating diverse regional associations.
Conclusions:
- The frontal cortex is significantly involved in the expression of MDD symptoms.
- The lack of a single brain structure correlating with all symptoms may explain varied research findings.
- These preliminary findings highlight the need for symptom-specific analyses to advance understanding of MDD pathophysiology.
Background:
The purpose of this study was to correlate the basal cerebral blood flow (CBF) in patients with major depressive disorder (MDD) with the score for each of the 21 questions in the Hamilton Rating Scale for Depression (HRSD), in order to determine the cerebral regions associated with each item.
Methods:
Fourteen antidepressant-naive patients with unipolar depression (DSM-IV criteria for MDD) participated in this study with a HRSD score of >/=20 points. CBF images obtained by SPECT were analyzed by SPM99 software. The significant correlation threshold for a priori regions (frontocortical and limbic regions) was a Z value of at least 2.25 and clusters formed by more than 10 voxels.
Results:
Items 1, 6, 11 and 20 were positively correlated with right medial frontal gyrus; item 7 was negatively correlated with bilateral medial frontal gyrus. Items 2 and 10 were positively correlated with right anterior and medial cingulate, respectively. Item 5 was negatively correlated with the left amygdala. Item 9 was negatively correlated with bilateral insula, and item 16 with right insula. Items 12 and 14 were positively correlated with right and left precentral frontal gyrus, respectively.
Limitations:
The small sample size and only out-patients included in the study.
Conclusions:
The frontal cortex plays an important role in the expression of MDD symptoms. Not all the symptoms evaluated correlated with one single structure, which may explain the diverse results reported in the literature. These preliminary results support the necessity of further analyses by symptoms that could provide more specific information on the pathophysiology of MDD.
