Related Experiment Video
Updated: Jun 24, 2026
04:33
Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder
Published on: April 26, 2024
Depressive symptomatology is influenced by chronotypes
Enrique Gaspar-Barba1, Raffaella Calati, Carlos S Cruz-Fuentes
1National Institute of Psychiatry, Mexico.
Journal of Affective Disorders
|March 17, 2009
Summary
Evening chronotypes in depression are linked to increased symptom severity, including suicidal thoughts and anxiety. Morning types showed fewer melancholic symptoms. Sleep patterns were not associated with specific chronotypes.
Area of Science:
- Chronobiology
- Psychiatry
- Sleep Medicine
Background:
- Rhythm disturbances are common in depression.
- Chronotypes, particularly eveningness, may indicate vulnerability to depression.
- Understanding chronotype-depressive episode links is crucial for clinical insight.
Purpose of the Study:
- To describe sleep characteristics of depressed patients across different chronotypes.
- To explore associations between chronotypes and clinical features of depressive episodes.
- To investigate the impact of chronotype on depression severity.
Main Methods:
- 100 patients with Major Depressive Disorder were assessed.
- Mini International Neuropsychiatric Interview (MINI) for diagnosis.
- Morningness-Eveningness Questionnaire (MEQ), HRSD, and sleep scales were used.
Main Results:
- Patients were categorized into eveningness (n=18), neither (n=61), and morningness (n=21) types.
- Evening-type patients exhibited higher suicidal ideation, anxiety, and paranoid symptoms.
- Morning-type patients had fewer melancholic symptoms; no sleep parameter associations were found.
Conclusions:
- Chronotypes significantly influence the features of depressive episodes.
- Eveningness is associated with greater depression severity.
- Further research with larger samples is needed to confirm findings.
More Related Videos
Related Concept Videos
01:27Depressive Disorders: MDD and Dysthymia
Depressive disorders are a group of mental health conditions characterized by pervasive feelings of sadness, diminished pleasure in life, and a significant impact on daily functioning. These conditions are most prevalent in individuals during their 30s and affect women at twice the rate of men. Contrary to popular belief, younger individuals are generally more susceptible to these disorders than older adults. Two key types of depressive disorders include Major Depressive Disorder (MDD) and...
01:27Depressive Disorders: Etiology
Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
Biological Factors in Depression
Biological predispositions significantly influence the risk of developing depressive disorders. Genetic studies highlight the role of variations in the serotonin transporter...
Biological Factors in Depression
Biological predispositions significantly influence the risk of developing depressive disorders. Genetic studies highlight the role of variations in the serotonin transporter...
01:15Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response
Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
01:13Insufficient Sleep and Sleep Deprivation
Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
Sleep deprivation is a more severe form of sleep loss...
01:27Insomnia
Insomnia is a prevalent sleep disorder characterized by difficulty falling asleep, frequent awakenings during the night, and waking up too early without being able to return to sleep. People with insomnia often experience these disruptions at least three nights a week for at least one month. Chronic insomnia, which lasts for at least three months, can lead to increased anxiety, which in turn can worsen sleep difficulties, creating a cycle of sleeplessness and stress.
Multiple factors contribute...
Multiple factors contribute...
01:18Depression: Overview
Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...