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Gut-derived lactic acid enhances tryptophan to 5-hydroxytryptamine in regulation of anxiety via .
Gut Microbes
December 2025
MOE/NHC/CAMS Key Lab of Medical Molecular Virology, School of Basic Medical Sciences, & National Clinical Research Center for Aging and Medicine, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.
The gut microbiota plays a pivotal role in anxiety regulation through pathways involving neurotransmitter production, immune signaling, and metabolic interactions. Among these, gut-derived serotonin (5-hydroxytryptamine, 5-HT), synthesized from tryptophan metabolism, has been identified as a key mediator. However, it remains unclear whether specific microbial factors regulate tryptophan metabolism to influence 5-HT production and anxiety regulation.
View Article and Find Full Text PDFComprehensive Approach for Sequential MALDI-MSI Analysis of Lipids, -Glycans, and Peptides in Fresh-Frozen Rodent Brain Tissues.
Anal Chem
January 2025
Department of Pharmaceutical Biosciences, Spatial Mass Spectrometry, Science for Life Laboratory, Uppsala University, SE-75124 Uppsala ,Sweden.
Multiomics analysis of single tissue sections using matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) provides comprehensive molecular insights. However, optimizing tissue sample preparation for MALDI-MSI to achieve high sensitivity and reproducibility for various biomolecules, such as lipids, -glycans, and tryptic peptides, presents a significant challenge. This study introduces a robust and reproducible protocol for the comprehensive sequential analysis of the latter molecules using MALDI-MSI in fresh-frozen rodent brain tissue samples.
View Article and Find Full Text PDFMolecular and Functional Significance of Growth Differentiation Factor-15: A Review on Cardiovascular-Kidney-Metabolic Biomarker.
Curr Cardiol Rev
January 2025
Department of Pharmacology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, 342005, India.
Cardiovascular-kidney-metabolic (CKM) syndrome is the association between obesity, diabetes, CKD (chronic kidney disease), and cardiovascular disease. GDF-15 mainly acts through the GFRAL (Glial cell line-derived neurotrophic factor Family Receptor Alpha-Like) receptor. GDF-15 and GDFRAL complex act mainly through RET co-receptors, further activating Ras and phosphatidylinositol-3-kinase (PI3K)/Akt pathways through downstream signaling.
View Article and Find Full Text PDFTechnology and Dementia Preconference.
Alzheimers Dement
December 2024
Georgia Institute of Technology, Atlanta, GA, USA.
Background: Chronic stress promotes life-long risk for neuropsychiatric decline by increasing neuroinflammation and disrupting synaptic health and plasticity. Our lab and others have recently demonstrated that non-invasive gamma sensory stimulation (flicker) modulates immune signaling, restores microglial function, and improves cognitive performance in mouse models of Alzheimer's disease (AD). However, no research to date has studied the effects of flicker in the context of stress.
View Article and Find Full Text PDFA Simple Protocol for Visualization of RNA-Protein Complexes by Atomic Force Microscopy.
Curr Protoc
January 2025
Czech Metrology Institute, Brno, Czech Republic.
Atomic force microscopy (AFM) has recently received increasing interest in molecular biology. This technique allows quick and reliable detection of biomolecules. However, studying RNA-protein complexes using AFM poses significant challenges.
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