Gut-brain Mechanisms
Gut-brain Mechanisms - Related Videos
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Gut-Brain Axis
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2026
The gut–brain axis is a bidirectional communication system that connects the gastrointestinal tract and the brain. This interaction is mediated through multiple pathways, including the vagus nerve, hormonal signals, immune responses, and chemical messengers produced by gut microbes.Microbial Contributions to Brain FunctionGut microbiota contributes significantly to brain function by producing neuroactive compounds. These include neuroactive compounds that influence neurotransmitters such as...
15:27
Extracting DNA from the Gut Microbes of the Termite (Zootermopsis Angusticollis) and Visualizing Gut Microbes
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Cited by 18 •
2007
This video illustrates the technique for extracting DNA from the species of microbes resident in the termite hindgut. The preparation of a wet mount slide, which is useful for visualizing the gut microbial community is also illustrated, and a tour through the species-rich gut environment is given.
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Impact Indentation for Assessing the Mechanical Properties of a Mouse Brain Tissue
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2025
Source: Canovic, E. P., et. al., Characterizing Multiscale Mechanical Properties of Brain Tissue Using Atomic Force Microscopy, Impact Indentation, and Rheometry. J. Vis. Exp. (2016)The video demonstrates using impact indentation to measure the mechanical properties of a hydrated mouse brain tissue, including stiffness, energy dissipation, and damping, through probe displacement and velocity analysis.
03:27
Isolation of Multiple Cell Types from a Mouse Brain by Mechanical Homogenization
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2025
This video demonstrates the isolation of multiple types of cells from mouse brain tissue. Tissue is first mechanically sheared using a tissue grinder in a salt solution to maintain an osmotic balance. The tissue homogenate is then subjected to density gradient centrifugation to remove cellular debris. Cells are then resuspended in a solution for further analysis.
07:00
Mechanisms Underlying Gut Hormone Secretion Using the Isolated Perfused Rat Small Intestine
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Cited by 13 •
2019
Here, we present a powerful and physiological model to study the molecular mechanisms underlying gut hormone secretion and intestinal absorption — the isolated perfused rat small intestine.
FAQs
The vagus nerve provides a neural route through which gastrointestinal signals can reach the central nervous system. This pathway helps connect intestinal activity with brain processes that influence digestion, mood, and behavior. Its importance in medicine lies in showing how changes within the gastrointestinal tract may have effects beyond local digestive symptoms, including possible effects on mental health.
Gut-brain signaling uses several biological channels rather than a single pathway. Immune mediators and endocrine hormones transmit information between intestinal tissues and the brain, while gut microbes produce metabolites that can also participate in signaling. Considering these components together helps researchers investigate how microbiota, inflammation, and intestinal activity may relate to changes in mood, behavior, or disease.
The brain influences gut function through autonomic pathways, which regulate involuntary activities such as intestinal movement and secretion. This provides a mechanism through which central nervous system states can alter gastrointestinal function. In medical research, that connection helps explain why psychological or neurological influences may be associated with changes in digestion, even when the initial signal originates outside the gastrointestinal tract.
Stress matters because brain-to-gut signaling can modify intestinal function through autonomic regulation. These changes may help explain how stress is associated with altered gastrointestinal activity and symptoms. Studying this relationship gives medicine a framework for examining conditions in which psychological state and gut function interact, including irritable bowel syndrome and other disorders involving digestive disturbance.
Gastrointestinal disorders may influence mental health through interconnected neural, immune, endocrine, and microbial signals. The resulting communication can link intestinal disease or dysfunction with mood and behavior. This perspective encourages clinicians and researchers to consider gastrointestinal and psychological features together rather than treating them as completely separate problems, particularly when evaluating conditions such as inflammatory disease, anxiety, or depression.
Medical research uses gut-brain mechanisms to investigate potential strategies for diagnosing and treating disorders that involve digestive and psychological symptoms. Studies can focus on how vagal signals, immune mediators, hormones, and microbial metabolites relate to disease. This work is relevant to irritable bowel syndrome, inflammatory disease, anxiety, and depression, while supporting a more integrated view of patient health.