ArticleCommunications biology2023
Biodistribution and racemization of gut-absorbed L/D-alanine in germ-free mice.
Article in Communications biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 13 citations in OpenAlex.
- Gut microbiota composition and functional pathways associated with metabolic syndrome in Mexican adult women: cross-sectional analysis.BMC microbiology · 2026Article
- Sources and Metabolism of D-Amino Acids and Their Roles as Biomarkers in Kidney Disease: A Review.Medical science monitor : international medical journal of experimental and clinical research · 2026Review
- Modulation of the Gut Microbiome and Metabolomes by Fermentation Using a Probiotic Complex in a Dysbiosis-Associated Fecal Model.Journal of microbiology and biotechnology · 2025Article
- D-Amino acids affect Pseudomonas aeruginosa biofilm and quorum sensing molecules in lung infection models developed under a cystic fibrosis environment.Scientific reports · 2025Article
- Biological and Analytical Perspectives on D-Amino Acids in Cancer Diagnosis and Therapy.Pharmaceuticals (Basel, Switzerland) · 2025Review
- d-Alanine, a Circadian Metabolite that Regulates Glucose Metabolism and Viral Infection.Chembiochem : a European journal of chemical biology · 2025Review
- Reflecting on chiral chimeric cancer and microbes: ambidextrous metabolism-the real danger?Frontiers in cell and developmental biology · 2025Article
- Targeted Chiral Metabolomics of D-Amino Acids: Their Emerging Role as Potential Biomarkers in Neurological Diseases with a Focus on Their Liquid Chromatography-Mass Spectrometry Analysis upon Chiral Derivatization.International journal of molecular sciences · 2024Review
- Kinetic analysis of D-Alanine upon oral intake in humans.Amino acids · 2024Article
- From colon wall to tumor niche: Unraveling the microbiome's role in colorectal cancer progression.PloS one · 2024Article
Corrections and comments
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Authors and funding
7 authors at 1 institution in 2 countries.
Funding
Abstract
Microbiome-derived metabolites are important for the microbiome-gut-brain axis and the discovery of new disease treatments. D-Alanine (D-Ala) is found in many animals as a potential co-agonist of the N-methyl-D-aspartate receptors (NMDAR), receptors widely used in the nervous and endocrine systems. The gut microbiome, diet and putative endogenous synthesis are the potential sources of D-Ala in animals, although there is no direct evidence to show the distribution and racemization of gut-absorbed L-/D-Ala with regards to host-microbe interactions in mammals. In this work, we utilized germ-free mice to control the interference from microbiota and isotopically labeled L-/D-Ala to track their biodistribution and racemization in vivo. Results showed time-dependent biodistribution of gut-absorbed D-Ala, particularly accumulation of gut-absorbed D-Ala in pancreatic tissues, brain, and pituitary. No endogenous synthesis of D-Ala via racemization was observed in germ-free mice. The sources of D-Ala in mice were revealed as microbiota and diet, but not endogenous racemization. This work indicates the importance of further investigating the in vivo biological functions of gut-microbiome derived D-Ala, particularly on NMDAR-related activities, for D-Ala as a potential signaling molecules in the microbiome-gut-brain axis.
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