Oxygen-limited Environment
Oxygen-limited Environment - Related Videos
10:15
Proteomic Analysis of Human Macrophage Polarization Under a Low Oxygen Environment
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2019
We present a protocol to obtain proteomic signatures of human macrophages and apply this to determination of the impact of a low oxygen environment on macrophage polarization.
02:27
Limiting Reactant
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2020
The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. However, in reality, the reactants are not always present in the stoichiometric amounts indicated by the balanced equation. In a chemical reaction, the reactant which gets consumed first, and limits the amount of product formed, is the limiting reactant, while the other substance becomes the excess reactant. An excess of one or more reactants is often used...
06:05
Employing Transcranial Magnetic Stimulation in a Resource Limited Environment to Establish Brain-Behavior Relationships
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Cited by 3 •
2022
Transcranial Magnetic Stimulation (TMS) and low-frequency TMS (lfTMS) have been demonstrated to be major contributors to brain literature. Here we highlight the methods for investigating the cortical correlates of self-deception using TMS.
03:40
Stoichiometry, Product Yield, and Limiting Reactants - Concepts
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2020
Chemical equations represent how a chemical reaction proceeds from reactants to products through physical or chemical change using chemical formulas. Stoichiometry is a term that describes the relative quantities of reactants and products in a chemical reaction. It is based on the Law of Conservation of Mass, which is a fundamental law that states that matter is neither created nor destroyed. Quite simply, the number and identity of reactant atoms must equal the number and identity of product...
06:08
Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
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Cited by 13 •
2018
Here, we present a method of the spectroscopic characterization of organic molecules by means of time-resolved photoluminescence spectroscopy on the nanosecond-to-millisecond timescale in oxygen-free conditions. Methods to efficiently remove oxygen from the samples and, thus, limit luminescence quenching are also described.
FAQs
The immediate effect is reduced mitochondrial respiration, which lowers ATP production, the main energy supply for many cellular processes. Cells may compensate by increasing anaerobic metabolism, allowing energy generation when oxygen cannot support typical aerobic rates. This shift helps maintain function under stress, but it also reflects a major change in how cellular energy demands are met.
Hypoxia-responsive pathways coordinate cellular and physiological adjustments to reduced oxygen availability. They can alter gene expression and influence processes such as respiration or blood flow, helping organisms respond beyond a simple metabolic slowdown. These pathways are important because they connect oxygen sensing with broader changes in cell activity and tissue-level oxygen management.
Reduced oxygen creates conditions in which existing metabolic programs may no longer meet cellular demands efficiently. Gene-expression changes help adjust the cell’s functional priorities, including responses associated with anaerobic metabolism and hypoxia-responsive regulation. This flexibility supports survival and function while oxygen remains restricted, making regulation of genetic activity a central part of adaptation.
Oxygen availability helps shape which microbial communities can function in habitats such as stagnant water, deep soils, and sediments. Changes in those communities can influence ecosystem nutrient cycling because microbial activity contributes to how nutrients are processed. Consequently, oxygen limitation links local environmental conditions with broader ecological changes in the movement and transformation of nutrients.
Researchers examine oxygen limitation in stagnant water, deep soils, sediments, tumors, and animal tissues because each setting can reveal different biological responses. In tissues, it can affect development and disease progression, while in environmental habitats it can shape microbial communities and nutrient cycling. Comparing these contexts helps distinguish shared oxygen responses from habitat-specific effects.
Studying oxygen-limited conditions can reveal how organisms adjust to cellular stress and changing environmental conditions. It also provides context for understanding development, disease progression, microbial ecology, and ecosystem nutrient cycling. By examining changes in metabolism, gene expression, respiration, blood flow, or community composition, researchers can connect oxygen availability with outcomes across biological scales.