Oxygen Gradient Measurement
Oxygen Gradient Measurement - Related Videos
11:23
Polydimethylsiloxane-polycarbonate Microfluidic Devices for Cell Migration Studies Under Perpendicular Chemical and Oxygen Gradients
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Cited by 13 •
2017
The control of chemical and oxygen gradients is essential for cell cultures. This paper reports a polydimethylsiloxane-polycarbonate (PDMS-PC) microfluidic device capable of reliably generating combinations of chemical and oxygen gradients for cell migration studies, which can be practically utilized in biological labs without sophisticated instrumentation.
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.
04:02
Measurement of Oxygen Consumption Rate in Acute Mouse Brain Slices
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2025
Source: Zhi, L. et al., Measurement of Oxygen Consumption Rate in Acute Striatal Slices from Adult Mice. J. Vis. Exp. (2022).This video demonstrates how to measure mitochondrial oxygen consumption rate (OCR) in mouse striatal brain slices. It details the steps for preparing the tissue plate and sensor cartridge, loading them into the flux analyzer, and explains the cellular processes underlying OCR patterns.
08:23
Characterization of Sickling During Controlled Automated Deoxygenation with Oxygen Gradient Ektacytometry
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Cited by 16 •
2019
Here, we present oxygen gradient ektacytometry, a rapid and reproducible method to measure red blood cell deformability in samples from patients with sickle cell disease under controlled deoxygenation and reoxygenation. This technique provides a way to study red blood cell sickling and to monitor sickle cell disease treatment efficacy.
01:19
Special considerations while measuring oxygen saturation
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2024
Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention. Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important.
FAQs
Oxygen gradients arise when oxygen-rich regions supply nearby areas while diffusion and transport redistribute it, and cellular respiration consumes it. The balance between delivery and consumption produces spatial differences between oxygenated and oxygen-depleted zones. Measuring these differences helps connect local oxygen availability with changes in cellular function, microbial activity, metabolism, growth, signaling, and survival.
These approaches detect local oxygen conditions through different measurement formats. Probes and microsensors provide oxygen-sensitive readings at selected locations, whereas imaging indicators can reveal oxygen patterns across a larger visualized region. The appropriate choice depends on whether the study emphasizes localized measurements or spatial mapping within systems such as biofilms, tissues, organoids, or cell cultures.
Spatial resolution determines whether measurements can distinguish oxygen-rich and oxygen-depleted regions within a biological system. This distinction matters because neighboring cells or microbial populations may experience different oxygen availability, even within the same culture or tissue. Mapping local variation therefore provides more specific information about microenvironments than a single overall oxygen value.
A typical approach identifies the biological system and the regions where oxygen conditions may differ, selects an oxygen-sensitive probe, microsensor, or imaging indicator, and then measures oxygen across the relevant space. The resulting values are compared to reveal concentration changes and to relate those patterns to respiration, transport, cellular activity, or microbial behavior.
This measurement is useful in systems where oxygen availability varies across space, including tissue microenvironments, biofilms, organoids, and cell cultures. In these settings, oxygen mapping can characterize how local conditions influence metabolism, growth, signaling, and survival. It also supports controlled experimental systems designed to examine oxygen-dependent biological responses.
Oxygen gradient measurement can help investigate how oxygen availability contributes to development, disease, host-microbe interactions, and cellular behavior. Profiles of oxygen across a system show where conditions become oxygen-rich or oxygen-depleted, allowing researchers to relate local environments to microbial activity and cell responses. These data also inform the design of experimental models with controlled oxygen conditions.