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Sleep loss robustly disrupts mood and emotion regulation in healthy individuals but can have a transient antidepressant effect in a subset of patients with depression. The neural mechanisms underlying this paradoxical effect remain unclear. Previous studies suggest that the amygdala and dorsal nexus (DN) play key roles in depressive mood regulation. Here, we used functional MRI to examine associations between amygdala- and DN-related resting-state connectivity alterations and mood changes after one night of total sleep deprivation (TSD) in both healthy adults and patients with major depressive disorder using strictly controlled in-laboratory studies. Behavioral data showed that TSD increased negative mood in healthy participants but reduced depressive symptoms in 43% of patients. Imaging data showed that TSD enhanced both amygdala- and DN-related connectivity in healthy participants. Moreover, enhanced amygdala connectivity to the anterior cingulate cortex (ACC) after TSD associated with better mood in healthy participants and antidepressant effects in depressed patients. These findings support the key role of the amygdala-cingulate circuit in mood regulation in both healthy and depressed populations and suggest that rapid antidepressant treatment may target the enhancement of amygdala-ACC connectivity.
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http://dx.doi.org/10.1073/pnas.2214505120 | DOI Listing |
Physiol Rep
September 2025
Military Nutrition Division, U.S. Army Research Institute of Environmental Medicine, Natick, Massachusetts, USA.
This study investigated the effects of fermentable fiber and polyphenol supplementation on mood and cognition following rapid ascent to simulated 4300 m. Healthy adults (n = 13, 21 ± 3 years) participated in a randomized, placebo-controlled crossover study consisting of three, 2-week phases separated by ≥1 week. Food products containing the fiber and polyphenol supplement or placebo were consumed during each phase.
View Article and Find Full Text PDFBMJ Open
September 2025
Department of Gastroenterology, Hepatology, Infectious Diseases and Intoxication, University Hospital Heidelberg, Heidelberg, Germany.
Introduction: Combined vascular endothelial growth factor/programmed death-ligand 1 blockade through atezolizumab/bevacizumab (A/B) is the current standard of care in advanced hepatocellular carcinoma (HCC). A/B substantially improved objective response rates compared with tyrosine kinase inhibitor sorafenib; however, a majority of patients will still not respond to A/B. Strong scientific rationale and emerging clinical data suggest that faecal microbiota transfer (FMT) may improve antitumour immune response on PD-(L)1 blockade.
View Article and Find Full Text PDFBrain Behav Immun
September 2025
Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm, Sweden; CEE-M, University of Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France. Electronic address:
A behavioral defense against disease involves detecting sickness cues in others and responding adaptively, such as by avoiding social interactions. While studies have shown that humans can discriminate sickness cues above chance in faces after sickness induction, whether this discrimination affects approach-avoidance behaviors remains uncertain. Here, we investigated how facial sickness cues influence judgments of trustworthiness, serving as a proxy measure for social avoidance.
View Article and Find Full Text PDFJ Affect Disord
September 2025
Department of Psychology, Florida State University, 1107 W Call St., Tallahassee, FL 32304, USA.
Active-duty military personnel often face significant mental health challenges, including high rates of anxiety, depression, and substance abuse. Despite the clear need for mental health interventions, service members frequently underutilize available services due to time constraints, concerns about career impact, and confidentiality issues. This study evaluates the acceptability and clinical impact of the Health Education Training (HET) program, a 50-min, single-session, computer-based intervention designed to promote healthy lifestyle behaviors among active-duty military personnel.
View Article and Find Full Text PDFJ Affect Disord
September 2025
State Key Laboratory of Reproductive Medicine and Offspring Health, Department of Epidemiology, School of Public Health, Children's Hospital Affiliated to Shandong University (Jinan Children's Hospital), Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China. Electronic addres
Background: The detrimental health effects of adverse childhood experiences (ACEs) are well documented, yet their impact on metabolic multimorbidity remains unclear. This study aimed to examine the associations of ACEs with adult metabolic disease and multimorbidity, and to assess whether adopting a healthy lifestyle in adulthood could mitigate these risks.
Methods: We analyzed 70,438 participants without any metabolic disease at enrolment in the UK Biobank.