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Cureus May 2024Streff syndrome is a non-malingering visual disturbance commonly affecting near and color vision, which is prevalent in the younger population. This case report presents...
Streff syndrome is a non-malingering visual disturbance commonly affecting near and color vision, which is prevalent in the younger population. This case report presents Streff-like syndrome in a middle-aged woman. A 47-year-old woman with underlying major depressive disorder presented with bilateral reduced vision and a constricted visual field for one week. These symptoms were accompanied by additional neurological complaints of headache, weakness, and numbness triggered after a stressful event that affected her work performance. Examinations revealed reduced vision more toward near, diminished red saturation, color vision deficiencies, and bilateral tubular visual fields. Notably, the relative afferent pupillary defect was negative, with both anterior and posterior segments normal. Neuroimaging and inflammatory workup results were within normal limits. An additional +1.00 lens improved her symptoms and visual acuities. Collaborative management involving psychiatry, neurology, and ophthalmology, including psychotherapy, led to significant symptom improvement. At the five-month follow-up, the patient experienced a complete resolution of her visual symptoms. Although Streff syndrome is a primary visual problem, additional psychogenic factors may add to variable cases. This case underscores the importance of recognizing stress-induced psychogenic manifestation, particularly in patients with underlying mental health conditions, and emphasizes an interdisciplinary management approach.
PubMed: 38947604
DOI: 10.7759/cureus.61289 -
Frontiers in Public Health 2024Postpartum fatigue (PPF) can impair the physical and mental well-being of women. The aims of this study were to assess the associations between fatigue and maternal...
BACKGROUND
Postpartum fatigue (PPF) can impair the physical and mental well-being of women. The aims of this study were to assess the associations between fatigue and maternal health-related variables, specifically, sleep quality, depression symptoms, and resilience, and to explore the moderating role of resilience in the relationships between sleep quality, depression symptoms, and fatigue.
METHODS
This cross-sectional study used data collected from mothers during the postpartum period via an online platform. PPF was assessed using the Fatigue Severity Scale, whereas sleep quality and depression symptoms were assessed using the Pittsburgh Sleep Quality Index and Edinburgh Postnatal Depression Scale, respectively. The Brief Resilience Scale was used to assess resilience. Simple and multiple binary logistic regression analyses were performed to examine the association of each independent variable with PPF and to determine the most significant predictors of PFF. The data were analyzed using SPSS, and structural equation modeling was performed using AMOS 23. A moderation analysis was performed to explore the moderating role of resilience using the Hayes PROCESS macro.
RESULTS
A total of 1,443 postpartum mothers were included in the analysis. The simple binary logistic regression analysis showed that having chronic disease (odds: 1.52; = 0.02), mother's age (odds: 0.97; = 0.03), mother's body mass index (BMI; odds: 1.03; = 0.01), depression symptoms (odds: 1.09; ≤ 0.0001), sleep quality (odds: 1.17; ≤ 0.0001), and resilience (odds: 0.42; p ≤ 0.0001) all contributed to fatigue during postpartum. Multivariate logistic regression showed that the mother's BMI, sleep quality, depression symptoms, and resilience were significant predictors of PPF. Moderation analyses showed that resilience was not a significant moderator between the main effects of sleep quality and fatigue (interaction effect: = 0.01, = 0.31, 95% CI: -0.01 to 0.04) or between the main effects of depression symptoms and fatigue during postpartum (interaction effect: = 0.01, = 0.82, 95% CI: -0.01 to 0.02).
CONCLUSION
Given the deleterious effects of PPF on maternal health outcomes, factors associated with PPF should be assessed regularly. In addition to mothers' BMI, sleep quality, and depression symptoms, resilience could also be a crucial factor in predicting fatigue severity during this critical time for mothers even though it was not a significant moderator among this sample.
Topics: Humans; Female; Cross-Sectional Studies; Adult; Fatigue; Resilience, Psychological; Postpartum Period; Mothers; Sleep Quality; Surveys and Questionnaires; Depression, Postpartum; Depression; Risk Factors; Logistic Models
PubMed: 38947349
DOI: 10.3389/fpubh.2024.1394380 -
MedRxiv : the Preprint Server For... Jun 2024Individuals with major depressive disorder (MDD) can experience reduced motivation and cognitive function, leading to challenges with goal-directed behavior. When...
Individuals with major depressive disorder (MDD) can experience reduced motivation and cognitive function, leading to challenges with goal-directed behavior. When selecting goals, people maximize 'expected value' by selecting actions that maximize potential reward while minimizing associated costs, including effort 'costs' and the opportunity cost of time. In MDD, differential weighing of costs and benefits are theorized mechanisms underlying changes in goal-directed cognition and may contribute to symptom heterogeneity. We used the Effort Foraging Task to quantify cognitive and physical effort costs, and patch leaving thresholds in low effort conditions (hypothesized to reflect perceived opportunity cost of time) and investigated their shared versus distinct relationships to clinical features in participants with MDD (N=52, 43 in-episode) and comparisons (N=27). Contrary to our predictions, none of the decision-making measures differed with MDD diagnosis. However, each of the measures were related to symptom severity, over and above effects of ability (i.e., performance). Greater anxiety symptoms were selectively associated with cognitive effort cost (i.e. greater willingness to exert effort). Anhedonia symptoms were associated with increased physical effort costs. Finally, greater physical anergia was related to decreased patch leaving thresholds. Markers of effort-based decision-making may inform understanding of MDD heterogeneity. Increased willingness to exert cognitive effort may contribute to anxiety symptoms such as rumination and worry. The association of decreased leaving thresholds with symptom severity is consistent with reward rate-based accounts of reduced vigor in MDD. Future research should address subtypes of depression with or without anxiety, which may relate differentially to cognitive effort decisions.
PubMed: 38947009
DOI: 10.1101/2024.02.18.24302985 -
Zhonghua Yi Xue Yi Chuan Xue Za Zhi =... Jul 2024To identify additional loci associated with depression and the hippocampus (HIP) through genome-wide association study.
OBJECTIVE
To identify additional loci associated with depression and the hippocampus (HIP) through genome-wide association study.
METHODS
The depression-related genome-wide association study (GWAS) meta summary data was downloaded from the official website of the Psychiatric Genomics Consortium, which had involved 170 756 cases and 329 443 controls. The left and right hippocampal volume GWAS data sets were downloaded from the UK Biobank, which involved 33 224 participants. The conditional false discovery rate (condFDR) was used to identify novel genetic loci for depression and left and right hippocampal volumes, and a conjunctional false discovery rate (conjFDR) was used to evaluate the enrichment of pleiotropic loci between depression and left and right hippocampal volumes.
RESULTS
Respectively, 7, 13, and 12 new loci have been associated with depression, left hippocampal volume and right hippocampal volume, with a significant threshold of condFDR < 0.01. A site of rs1267073 locus was found to be shared by the depression and right hippocampal volume with a threshold of conjFDR < 0.01.
CONCLUSION
Above findings have provided more insights into the genetic mechanisms underlying the volume of hippocampus and the risk for depression. The results may also provide evidence for future clinical trials for treating depression.
Topics: Humans; Hippocampus; Genome-Wide Association Study; Depressive Disorder, Major; Genetic Loci; Genetic Predisposition to Disease; Polymorphism, Single Nucleotide; White People; Female
PubMed: 38946356
DOI: 10.3760/cma.j.cn511374-20230515-00285 -
The American Journal of Psychiatry Jul 2024
Topics: Humans; Depressive Disorder, Treatment-Resistant; Medical Records
PubMed: 38946279
DOI: 10.1176/appi.ajp.20240377 -
The American Journal of Psychiatry Jul 2024
Topics: Humans; Brain; Multimodal Imaging; Neuroimaging; Magnetic Resonance Imaging; Brain Mapping; Depressive Disorder, Major; Stress, Psychological
PubMed: 38946274
DOI: 10.1176/appi.ajp.20240400 -
Nihon Yakurigaku Zasshi. Folia... 2024Major depressive disorder (MDD) is a psychiatric disorder that affects more than 300 million people worldwide and has a serious impact on society. Conventional... (Review)
Review
Major depressive disorder (MDD) is a psychiatric disorder that affects more than 300 million people worldwide and has a serious impact on society. Conventional antidepressants targeting monoamines in the brain based on the monoamine hypothesis are known to take a prolonged time to be effective or less effective in 30% of MDD patients. Hence, there is a need to develop antidepressants that are effective against treatment-resistant depression and have a new mechanism different from the monoamine hypothesis. An increasing number of research groups including us have been establishing that pituitary adenylate cyclase-activating polypeptide (PACAP) and one of its receptors, PAC1 receptor, are closely related to the etiology of stress-related diseases such as MDD. Therefore, it is strongly suggested that the PAC1 receptor is a promising target in the treatment of psychiatric disorders. We developed a novel, non-peptidic, small-molecule, high-affinity PAC1 receptor antagonists and conducted behavioral pharmacology experiments in mice to characterize a novel PAC1 receptor antagonist as a new option for MDD therapy. The results show that our novel PAC1 receptor antagonist has the potential to be a new antidepressant with a high safety profile. In this review, we would like to present the background of developing our novel PAC1 receptor antagonist and its effects on mouse models of acute stress.
Topics: Antidepressive Agents; Animals; Humans; Receptors, Pituitary Adenylate Cyclase-Activating Polypeptide, Type I; Drug Development; Depressive Disorder, Major; Molecular Targeted Therapy
PubMed: 38945904
DOI: 10.1254/fpj.24008 -
Nihon Yakurigaku Zasshi. Folia... 2024Major Depressive Disorder (MDD) poses a significant global health burden, with 30-40% patients developing resistance to standard clinical antidepressants, such as... (Review)
Review
Major Depressive Disorder (MDD) poses a significant global health burden, with 30-40% patients developing resistance to standard clinical antidepressants, such as selective serotonin reuptake inhibitors and tricyclic antidepressants. In 2016, Carhart-Harris and colleagues reported that psilocybin, the hallucinogenic compound derived from magic mushrooms, exhibits rapid and enduring antidepressant effects in patients with treatment-resistant depression. Subsequent clinical studies have found the therapeutic potential of psilocybin in MDD, depressive episode in bipolar disorder, anorexia, and drug addiction. In 2018 and 2019, the U.S. Food and Drug Administration designated psilocybin as a "breakthrough medicine" for treatment-resistant depression and MDD, respectively. Notably, the side effects of psilocybin are limited to transient and mild issues, such as headache and fatigue, suggesting its safety. In 2023, we published a review on the role of serotonin 5-HT receptors in the antidepressant effects of serotonergic psychedelics (Nihon Yakurigaku Zasshi, Volume 158, Issue 3, Page 229-232). Here, we present our study alongside the latest clinical and preclinical research on the antidepressant effects of psilocybin and provide an overview of the potential and issues related to psilocybin therapy.
Topics: Psilocybin; Humans; Animals; Antidepressive Agents; Hallucinogens; Depressive Disorder, Major; Receptor, Serotonin, 5-HT2A
PubMed: 38945903
DOI: 10.1254/fpj.24007 -
Science Bulletin Jun 2024
PubMed: 38945750
DOI: 10.1016/j.scib.2024.06.021 -
Journal of Affective Disorders Jun 2024Major depressive disorder (MDD) is characterized by increased T helper (Th)1 polarization, T cell activation (e.g., CD71+ and CD40L+), and cannabinoid receptor type 2...
T cell activation and lowered T regulatory cell numbers are key processes in severe major depressive disorder: Effects of recurrence of illness and adverse childhood experiences.
BACKGROUND
Major depressive disorder (MDD) is characterized by increased T helper (Th)1 polarization, T cell activation (e.g., CD71+ and CD40L+), and cannabinoid receptor type 2 bearing CD20+ B cells; and lower T regulatory (Treg) numbers.
AIMS
To delineate the effects of adverse childhood experiences (ACEs) and recurrence of illness (ROI) on activated T and CB2-bearing B populations, and Tregs, including FoxP3 + CD152+, FoxP3 + GARP+, and FoxP3 + CB1+ cells.
METHODS
We measured ROI, ACEs, the number of activated T cells, Tregs, and CD20 + CB2+ B cells, in 30 MDD patients and 20 healthy controls.
RESULTS
A larger part of the variance in the depression phenome (40.8 %) was explained by increased CD20 + CB2+ and activated T cells, and lowered Tregs. ROI and lifetime suicidal behaviors were significantly and positively associated with CD20 + CB2+, CD3 + CD71+, CD3 + CD40L+, CD4 + CD71+, CD4 + CD40L+, and CD4HLADR+ numbers. ROI was significantly correlated with CD8 + CD40L+ numbers. The sum of ACEs was significantly associated with CD20 + CB2+, CD3 + CD40L+, CD4 + 40 L+ numbers, T cell activation (positively) and Treg (inversely) indices. One replicable latent vector could be extracted from activated T cells, lifetime and current suicidal behaviors, number of depressive episodes, and severity of depression, and 48.8 % of its variance was explained by ACEs.
CONCLUSIONS
ACE-induced activation of T effector and cytotoxic cells and B cells with autoimmune potential, coupled with lowered Treg numbers are a key component of depression. The findings indicate that increasing ROI, the phenome of depression and suicidal behaviors, are caused by autoimmune processes, which are the consequence of ACEs and increasing sensitization of immune responses.
PubMed: 38945402
DOI: 10.1016/j.jad.2024.06.097