Tissue Oxygen
Tissue Oxygen - Related Videos
11:35
Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function
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Cited by 16 •
2010
A dual-mode imaging system was developed for non-contact assessment of cutaneous tissue oxygenation and vascular function.
03:42
An Assay for Detecting Reactive Oxygen Species Production in Rice Tissues upon Immune Elicitation
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2025
This video demonstrates an assay for real-time detection of reactive oxygen species (ROS) production in rice tissues upon pathogen-associated molecular pattern (PAMP) elicitation. Cut sheath segments and leaf discs are exposed to a bacterial flagella-derived peptide functioning as a PAMP. Upon recognition of the peptide via pattern recognition receptors (PRRs) on plant cells, a rapid and transient production of ROS occurs, which is detected via a chemiluminescence assay.
08:58
Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence
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Cited by 27 •
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...
04:36
Measurement of Tissue Oxygenation Using Near-Infrared Spectroscopy in Patients Undergoing Hemodialysis
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Cited by 3 •
2020
We present a protocol to measure regional oxygen saturation (rSO2) in hemodialysis (HD) patients by using a near-infrared spectroscopy monitor. The rSO2 value is an index of tissue oxygenation. This noninvasive and real-time monitoring could be useful for confirming changes in organ oxygenation during HD.
FAQs
Hemoglobin binds oxygen reversibly in red blood cells, allowing oxygen to be carried through the circulation and released when blood reaches tissues. This reversible transport links lung oxygen uptake with local cellular demand. Because delivery depends on both blood movement and release near tissues, changes in circulation can alter oxygen availability even when oxygen enters the body normally.
A partial-pressure gradient provides the driving force for oxygen diffusion from capillaries into surrounding tissue and then into cells. Oxygen moves from regions with higher partial pressure toward regions with lower partial pressure. Tissue structure therefore matters because the distance and arrangement between blood vessels and cells can influence how effectively oxygen reaches sites of mitochondrial activity.
Tissue oxygen changes when oxygen delivery, cellular metabolism, blood flow, or tissue structure changes. Increased metabolic activity can consume oxygen more rapidly, while altered blood flow can limit its supply. Respiratory or vascular disorders may also disrupt delivery. Examining these interacting factors helps explain why oxygen availability differs among tissues and across physiological conditions.
Mitochondria use oxygen during aerobic respiration, so tissue oxygen availability directly supports cellular energy production and normal physiological function. If oxygen delivery does not match metabolic demand, cells may experience reduced support for these activities. This relationship makes tissue oxygen a useful biological variable when studying how tissues respond to changing workload or impaired circulation.
Researchers can measure or model tissue oxygen to examine how oxygen delivery changes with metabolism, blood flow, and tissue structure. Measurement provides information about oxygen availability within tissues, while modeling helps represent how oxygen moves from circulation into cells. Together, these approaches support analysis of tissue oxygen behavior without treating delivery as a fixed property.
Tissue oxygen is especially relevant when investigating hypoxia, a condition involving insufficient oxygen availability, as well as wound healing and tumor biology. It also helps researchers examine responses to exercise and the effects of vascular or respiratory disorders. These applications connect oxygen delivery with changes in cellular function, tissue performance, and disease-related physiology.
In wound healing and tumor biology, tissue oxygen measurements can reveal how local oxygen availability relates to blood flow, tissue structure, and cellular demand. Comparing oxygen conditions helps biologists investigate why oxygen delivery changes within these settings. The resulting information can clarify how local tissue environments influence normal repair processes or disease-associated biology.
Exercise changes the relationship between oxygen delivery and cellular metabolism because active tissues require oxygen to support increased energy production. Studying tissue oxygen during exercise therefore helps biologists examine how blood flow and metabolic demand interact. This perspective connects local oxygen availability with whole-body physiological responses rather than considering oxygen transport only at the lungs or in the bloodstream.