Following the administration of theanine, the brain tryptophan content significantly increased or tended to increase, but the contents of serotonin and 5-hydroxyindole acetic acid (5HIAA) decreased. The use of inhibitors of serotonin metabolism enable us to speculate that theanine reduced serotonin synthesis and also increased serotonin degradation in the brain.
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http://dx.doi.org/10.1271/bbb.62.816 | DOI Listing |
Front Immunol
January 2025
State Key Laboratory of Traditional Chinese Medicine Syndrome, Department of Neurology, Guangdong Provincial Academy of Chinese Medical Sciences, Guangdong Provincial Hospital of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.
Background: A stable and reproducible experimental bacterial pneumonia model postintracerebral hemorrhage (ICH) is necessary to help investigating the pathogenesis and novel treatments of Stroke-associated pneumonia (SAP).
Aim: To establish a Gram-negative bacterial pneumonia-complicating ICH rat model and an acute lung injury (ALI)-complicating ICH rat model.
Methods: We established two standardized models of post-ICH pneumonia by nasal inoculation with () or intratracheal inoculation with lipopolysaccharide (LPS).
Front Cell Infect Microbiol
January 2025
Scientific Research Department, Hunan Academy of Chinese Medicine, Changsha, China.
Objective: This study aims to explore the therapeutic mechanism of Massa Medicata Fermentata (MMF) with different formulations on spleen deficiency constipation in mice by analyzing gastrointestinal hormones, D-xylose, intestinal microbiota, and intestinal enzyme activities.
Methods: A spleen deficiency constipation model was established using an oral administration of Sennae Folium decoction combined with controlled diet and water intake. After successful model establishment, the mice with spleen deficiency constipation were treated with MMF S1, S2, S3.
J Periodontal Res
January 2025
Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou City, Guangdong Province, China.
Aim: The correlation between periodontitis and colorectal cancer (CRC) has drawn widespread attention. However, how periodontitis affects CRC progression remains unclear.
Methods: C57BL/6 mice were used to establish experimental periodontitis and CRC model.
J Physiol Sci
January 2025
Center for Medical Sciences, International University of Health and Welfare, 324-8501, Otawara, Tochigi, Japan; Bio-Laboratory, Foundation for Advancement of International Science, 305-0821, Tsukuba, Ibaraki, Japan. Electronic address:
Previously, we found that serotonin (5-HT) release in the central nucleus of the amygdala (CeA) of anesthetized rats decreases in response to innocuous stroking of the skin, irrespective of stimulus laterality, but increases in response to noxious pinching applied to a hindlimb contralateral to the 5-HT measurement site. The aim of the present study was to determine whether intra-CeA 5-HT release responses to cutaneous stimulation were altered in an animal model of neuropathic pain induced by ligation of the left L5 spinal nerve. In anesthetized neuropathic pain model rats, stroking of the left hindlimb increased 5-HT release in the CeA, whereas stroking of the right hindlimb decreased it.
View Article and Find Full Text PDFACS Chem Neurosci
January 2025
Unconventional Computing Laboratory, University of the West of England, Bristol BS16 1QY, U.K.
This study examines the effects of incorporating serotonin (5-HT) into proteinoid microspheres. It looks at the microspheres' structure and electrochemical properties. Proteinoid-serotonin assemblies have better symmetry and membrane organization than pristine proteinoids.
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