Microbiota Modulation
Microbiota Modulation - Related Videos
01:21
Microbiota Modulation by Antibiotics
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2026
Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...
01:15
Assessing the Role of Gut Microbiota in Modulating Hepatitis B Infection in Mice
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2026
Take a control mouse with a normal gut microbiota and an experimental mouse with depleted gut microbiota. The depletion compromises the integrity of the gut barrier.This enables bacteria to translocate through the blood vessel into the liver tissue.Inject both mice with the hepatitis B virus or HBV plasmid to induce an HBV infection in the liver tissue.In the control mouse, the T cell detects an infected liver cell through the interaction of its receptors with viral antigens, and produces...
08:34
Investigating the Alleviating Effects of Bacillus cereus Administration on Colitis through Gut Microbiota Modulation
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Cited by 2 •
2022
Here, we present a protocol to establish the antibiotic-induced pseudo-germ-free dextran sulfate sodium-induced colitis mouse model to investigate the role of gut microbiota in regulating the positive effects of Bacillus cereus on colitis.
07:54
A Method to Assess Bacteriocin Effects on the Gut Microbiota of Mice
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Cited by 9 •
2017
Bacteriocins are believed to play a key role in defining microbial diversity in different ecological niches. Here, we describe an efficient procedure to assess how bacteriocins affect gut microbiota composition in an animal model.
01:27
Oral Infection Alters the Gut Microbiota in a Rat Model
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2026
Begin with a rat model with sutures tied around its upper molar teeth to support bacterial colonization.Repeatedly smear the sutures with a gum disease-causing oral pathogenic bacterium using a gel-like solution.The bacteria colonize the gum around the sutures.Colonization triggers inflammation and damages the tissues.The bacteria release toxins that diffuse through damaged tissues and enter the bloodstream.These circulating toxins reach the gut, cause inflammation, disrupt the epithelial...
FAQs
Microbiota modulation can influence health through three connected host-facing pathways: microbial metabolite production, immune signaling, and epithelial barrier function. Changing community composition may alter which microbial activities occur, while changing activity can affect the host even without a complete community replacement. In medicine, examining these linked responses helps researchers connect a microbial intervention with physiological or clinical effects.
These approaches differ in what they change and how directly they act on the community. Dietary substrates and prebiotics supply inputs that can favor particular microbial activities, whereas probiotics introduce microorganisms. Antibiotics alter existing communities, and microbiota transfer changes the community more directly. Comparing these options helps investigators match an intervention to the desired biological response and its safety requirements.
A change in microbial composition does not necessarily predict its effect on the host. Researchers also need to consider microbial activity, including the metabolites produced by the community, because these outputs can influence immune signaling and epithelial barrier function. Measuring both composition and activity therefore provides a more informative basis for interpreting treatment responses and linking microbial changes with physiology.
Microbial profiling adds a measurement layer to an intervention study. It can help characterize changes in community composition and support identification of treatment responses, while host-related outcomes provide context for whether those changes matter physiologically. This combination is relevant to personalized medicine because profiles may help guide which microbiota-directed intervention is considered for a particular response pattern.
A medical investigation typically links an intervention with microbial and host measurements: researchers select a modulation strategy, examine microbial composition or activity, and assess relevant physiological or health outcomes. Profiling can help identify response patterns, while follow-up is important for evaluating persistence and long-term effects. The design depends on whether the study addresses gastrointestinal, metabolic, infectious, or immune-mediated disease.
Microbiota modulation is being investigated across several medical areas rather than one disease category. In gastrointestinal and metabolic research, studies examine relationships between microbial changes and host physiology. Infectious-disease work considers how community alteration relates to health, while immune-mediated disease research focuses on immune signaling. Across these settings, the goal is to develop safer, more targeted interventions and evaluate treatment responses.