Intestinal Oxygenation
Intestinal Oxygenation - Related Videos
10:58
A Protocol for Lentiviral Transduction and Downstream Analysis of Intestinal Organoids
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Cited by 81 •
2015
In this video protocol we give a step by step explanation of lentiviral transduction in organoids of primary intestinal epithelium and of processing and downstream analysis of these cultures by quantitative RT-PCR, RNA-microarray and immunohistochemistry.
03:29
Flow Cytometry Assay to Quantify Oxidative Stress: An Assay to Quantify Reactive Oxygen Species in Intestinal Organoids Using Fluorogenic Probes
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2025
This video demonstrates a flow cytometry assay to quantify the ROS levels in 3D intestinal organoids obtained from GFP-expressing transgenic mice. This method provides an in vitro experimental model to investigate the efficacy of test compounds on ROS production.
03:28
Fluorescent Probe Imaging Assay: A Technique to Visualize Oxidative Stress in the Reactive Oxygen Species Inducer-Treated Cultured Intestinal Organoid Cells
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2025
This video describes the technique of visualizing oxidative stress in cultured organoids. This work helps in understanding the level of oxidative stress due to ROS accumulation in the various cell types present in an organoid after treatment with different ROS modulators.
08:58
Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence
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Cited by 28 •
2011
We present an experimental procedure for measuring the partial pressure of oxygen (pO2) in cerebral vasculature based on oxygen-dependent quenching of phosphorescence. Animal preparation and imaging procedures were outlined for both large field of view CCD-based imaging of pO2 in rats and 2-photon excitation based imaging of pO2 in mice.
09:08
Detecting Reactive Oxygen Species
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2023
Reactive oxygen species are chemically active, oxygen-derived molecules capable of oxidizing other molecules. Because of their reactive nature, there are many deleterious effects associated with unchecked ROS production, including structural damage to DNA and other biological molecules. However, ROS can also be mediators of physiological signaling. There is accumulating evidence that ROS play significant roles in everything from activation of transcription factors to the mediation of...
FAQs
Oxygen conditions change from the mucosal surface toward the gut lumen because oxygen enters through the intestinal microcirculation, diffuses across tissue, and is consumed by epithelial cells and resident microbes. This creates spatially distinct environments rather than uniform oxygen availability. The gradient is important for interpreting how different intestinal regions respond to altered perfusion or oxygen use.
The intestinal microcirculation supplies oxygen close to the mucosa, while diffusion distributes it across the intestinal wall. Tissue oxygen levels therefore depend on both delivery through small vessels and movement across local gradients. If delivery or distribution becomes inadequate, the intestinal wall may develop tissue hypoxia, making these processes central to evaluating impaired intestinal perfusion.
Epithelial cells and resident microbes consume oxygen as it moves through the intestinal environment. Their combined use contributes to the distinct oxygen conditions observed between the mucosal surface and the lumen. This relationship makes oxygen availability relevant to both epithelial metabolism and host-microbe interactions, particularly when researchers examine changes in barrier function or intestinal tissue status.
Assessment can reveal whether intestinal tissue is receiving and distributing oxygen adequately. Reduced oxygenation may indicate tissue hypoxia associated with intestinal ischemia, inflammation, or critical illness, as described in the medical context. Interpreting oxygenation alongside the underlying perfusion problem can help researchers and clinicians focus on intestinal tissue stress rather than oxygen delivery as an isolated measurement.
Oxygenation measurements or observations can help connect tissue oxygen status with epithelial metabolism and barrier integrity. When oxygen delivery or distribution is impaired, investigators can examine whether intestinal tissue function and barrier-related outcomes are also affected. This makes oxygenation a useful research context for studying gut barrier dysfunction and strategies intended to protect intestinal tissue.
Critical illness and inflammation are contexts in which impaired intestinal oxygenation may accompany tissue hypoxia or altered perfusion. Studying oxygen distribution in these settings helps researchers investigate how intestinal tissue responds to reduced oxygen availability and how barrier dysfunction may develop. The same framework also supports work on protecting intestinal tissue and understanding host-microbe relationships.