Fecal Suspension
Fecal Suspension - Related Videos
03:33
Evaluating the Effects of Fecal Microbiota Transplantation in an Interleukin-10 Deficient Mouse
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2025
This video demonstrates a procedure of fecal microbiota transplantation in an interleukin-10 deficient mouse with colon inflammation. Colonized fecal microbes in the gut release secondary metabolites, eliciting anti-inflammatory cytokine release and reducing colon inflammation.
10:58
Isolation of Fecal Bacteria from Water Samples by Filtration
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2023
Source: Laboratories of Dr. Ian Pepper and Dr. Charles Gerba - The University of Arizona Demonstrating Author: Luisa Ikner The quality of water destined for use in agricultural, recreational, and domestic settings is of great importance due to the potential for outbreaks of waterborne disease. Microbial agents implicated in such events include parasites, bacteria, and viruses that are shed in high numbers in the feces of infected people and animals. Transmission to new and susceptible hosts may...
08:02
Fecal Glucocorticoid Analysis: Non-invasive Adrenal Monitoring in Equids
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Cited by 6 •
2016
Adrenal activity can be assessed in the equine species by analysis of feces for corticosterone metabolites. The method offers a non-invasive option to assess long term patterns in both domestic and free ranging horses. This protocol describes the enzyme linked immunoassay involved and the associated biochemical validation.
02:57
Assessing the Coexistence of T4 Bacteriophage and E. coli in Murine Fecal Samples
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2026
Source: Pett, N., et al. T4 Bacteriophage and E. coli Interaction in the Murine Intestine: A Prototypical Model for Studying Host-Bacteriophage Dynamics In Vivo. J. Vis. Exp. (2024).This video demonstrates the in vivo interaction between T4 bacteriophage and E. coli in the murine intestine, and the fecal spot plating method to quantify their coexistence by measuring bacterial colonies and phage plaques.
01:18
Detection of Human Fecal Metabolites Using a Bacterial Biosensor
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2026
Begin with a bacterial biosensor culture suspended in a medium.These engineered bacteria produce a transcription factor that, upon binding to a specific fecal metabolite, activates a promoter associated with a fluorescent reporter gene.To this culture, add a filtered human fecal sample containing metabolites, such as lactate, that are involved in host-microbiome interactions.Dilute this mixture with a fresh medium to maintain an optimal reaction volume.Incubate without shaking to mimic the...
FAQs
An appropriate compatible buffer or medium keeps the sample in a form that can be handled while preserving access to its microorganisms, metabolites, and particulate components. Its role is therefore not merely to add liquid: it supports consistent dispersion and makes samples more comparable during laboratory analysis or preparation for research administration.
Each step addresses a different source of sample variability. Dilution makes the material manageable, homogenization distributes its contents more evenly, and removal of large debris produces a preparation that is easier to handle. Together, these operations improve uniformity without reducing the suspension to a single component, allowing microorganisms, metabolites, and particulate material to remain represented for downstream work.
Preparation conditions influence how confidently researchers can attribute observations to the original fecal material. Controlled handling helps maintain a consistent preparation, while sterile conditions can reduce the introduction of unwanted external material. This is especially relevant in infection and immunology experiments, where contamination or inconsistent handling could complicate interpretation of microbial, inflammatory, or immune-related findings.
A single preparation can retain several biologically relevant fractions rather than representing only cultured microorganisms. Researchers may examine microbial communities, metabolites, and particulate components, then relate them to host-microbe interactions, pathogen transmission, or immune responses. This breadth makes the preparation useful when disease or inflammation may reflect interactions among intestinal contents and the host.
Preparation begins by dispersing fecal material in a compatible buffer or medium, followed by dilution and homogenization. Large debris is then removed, and the resulting material is handled under controlled, often sterile conditions. The goal is a more uniform preparation suitable for analysis or administration, with the workflow adjusted to the requirements of the planned experiment.
Researchers select this format when they need a manageable, more uniform sample for laboratory analysis or administration. It is particularly useful for microbiome transfer experiments and for investigating how intestinal contents affect inflammation, colonization resistance, and disease outcomes. The prepared material also supports studies of pathogen transmission and immune responses within an experimental framework.
Standardization makes the transferred material more consistent across experimental preparations, helping researchers compare how intestinal contents influence recipient outcomes. In this context, the suspension can serve as a controlled experimental input while investigators evaluate effects on colonization resistance, inflammation, or disease. Consistent preparation therefore strengthens interpretation of links between microbial material and host responses.