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Functional and Structural Investigation of Myenteric Neurons in the Human Colon.
Gastro Hep Adv
August 2024
Institute for Physiology and Cell Biology, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany.
Background And Aims: The enteric nervous system independently controls gastrointestinal function including motility, which is primarily mediated by the myenteric plexus, therefore also playing a crucial role in functional intestinal disorders. Live recordings from human myenteric neurons proved to be challenging due to technical difficulties. Using the neuroimaging technique, we are able to record human colonic myenteric neuronal activity and investigate their functional properties in a large cohort of patients.
View Article and Find Full Text PDFTGM2-mediated histone serotonylation promotes HCC progression via MYC signalling pathway.
J Hepatol
January 2025
Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Clinical Medical Research Center of Hepatic Surgery at Hubei Province, Wuhan 430030, China; Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan 430030, China; Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, , Chinese Academy of Medical Sciences, Wuhan 430030, China. Electronic address:
Background & Aims: Hepatocellular carcinoma (HCC) is an aggressive malignancy with few effective treatment options. H3Q5ser, a serotonin-based histone modification mediated by transglutaminase 2 (TGM2), affects diverse biological processes, such as neurodevelopment. The role of TGM2-mediated H3Q5ser in HCC progression remains unclear.
View Article and Find Full Text PDFGut-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 PDFPharmacological treatment in autism: a proposal for guidelines on common co-occurring psychiatric symptoms.
BMC Med
January 2025
Lurie Center for Autism, Massachusetts General Hospital, Lexington, MA, 02421, USA.
Background: The prevalence of autism spectrum disorder (ASD) has surged, with an estimated 1 in 36 eight-year-olds in the United States meeting criteria for ASD in 2020. Autistic individuals face elevated rates of co-occurring medical, psychiatric, and behavioral conditions compared to non-autistic individuals. The rising ASD-patient demand is increasingly outpacing the capacity of ASD-specialty clinics, resulting in urgent need for autism-competent providers in general practice settings.
View Article and Find Full Text PDFPrenatal Stress Modulates Placental and Fetal Serotonin Levels and Determines Behavior Patterns in Offspring of Mice.
Int J Mol Sci
December 2024
Laboratory of Comparative Developmental Physiology, Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, 119334 Moscow, Russia.
Available evidence from animal studies suggests that placental serotonin plays an important role in proper fetal development and programming by altering brain circuit formation, which later translates into altered abnormal adult behaviors. Several environmental stimuli, including stress and maternal inflammation, affect placental and, hence, fetal serotonin levels and thus may disturb fetal brain development. We investigated the effect of prenatal stress of varying intensities on the formation of adaptive behaviors in mouse offspring and the role of placental serotonin in these processes.
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