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Ann Med
December 2025
Department of Anesthesiology, Hunan Children's Hospital, Changsha, Hunan, China.
Introduction: Esketamine has unique advantages in combination with dexmedetomidine for sedation in young children, owing to its sympathetic activity and mild respiratory depression. However, the optimal dose is yet to be determined. In this study, we compared the different doses of intranasal esketamine combined with dexmedetomidine for sedation during transthoracic echocardiography in toddlers.
View Article and Find Full Text PDFNervenarzt
January 2025
Abteilung für Molekulares Neuroimaging, Zentralinstitut für Seelische Gesundheit, Medizinische Fakultät Mannheim, Universität Heidelberg, 68159, Mannheim, Deutschland.
Background: Novel antidepressive substances are challenging the explanations for the mechanisms of action of traditional psychopharmacology.
Objective: What could be the shared effects of various antidepressants and in this context what role do extrapharmacological factors, such as the body and environment, play?
Material And Method: The available literature on clinical and preclinical data for assumed combined active factors of serotonergic psychedelic drugs, (es)ketamine, monoaminergic antidepressants and zuranolone are presented and the influence of context factors on the individual mechanisms of action is discussed.
Results: There are many indications that classical and novel pharmacological approaches could share similar mechanisms of action in the treatment of depression.
Brain
January 2025
Department of Psychiatry (UPK), University of Basel, 4001 Basel, Switzerland.
Perception integrates external sensory signals with internal predictions that reflect prior knowledge about the world. Previous research suggests that this integration is governed by slow alternations between an external mode, driven by sensory signals, and an internal mode, shaped by prior knowledge. Using a double-blind, placebo-controlled, cross-over experiment in healthy human participants, we investigated the effects of the N-Methyl-D-aspartate receptor (NMDAR) antagonist S-ketamine on the balance between external and internal modes.
View Article and Find Full Text PDFCurr Neuropharmacol
January 2025
Department of Anesthesiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
Depression is a prevalent mental disorder, affecting approximately 300 million people worldwide. Despite decades of research into the underlying mechanisms of depression, a consensus remains elusive. Recent studies have implicated changes in oligodendrocytes and myelin in the pathogenesis of depression.
View Article and Find Full Text PDFEur J Med Chem
January 2025
Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China. Electronic address:
Substance use disorders (SUDs) present a critical global health challenge, as current treatment options often prove insufficient, particularly for substances like ketamine and methamphetamine. In this study, we developed a novel immunotherapeutic strategy utilizing protein-free, polymer-based vaccines, with hyperbranched polyethylenimine (Hb-PEI) as a carrier to enhance immune specificity and remove the production of non-specific antibodies. Haptens for ketamine and methamphetamine were covalently conjugated to the Hb-PEI carrier, along with the Toll-like receptor (TLR) 7/8 agonist 1V209, to stimulate targeted humoral immune responses.
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