Concentration anoxia. Medical search. Frequent questions

This can lead to impacts to other organisms via poor food quality, gill irritation/clogging, decreased photosynthesis of underwater vegetation, production of allelochemicals, habitat alteration and anoxia/hypoxia following the decay of large blooms. (maryland.gov)
In other regions experiencing various degrees of O2-deficiency (hypoxia to anoxia), CH4 concentrations vary from a few to hundreds of nanomolar levels. (geomar.de)
Hypoxia refers to a state in which the oxygen supply is insufficient for the demand, whereas hypoxemia refers to states that have low arterial oxygen concentration. (mcpcourse.com)
Generalized hypoxia can occur in healthy people at a high altitude where oxygen concentration of the air is low. (mcpcourse.com)
Causes of Hypoxia can be the high altitude where oxygen concentration of the air is low, breathing mixtures of gasses with a low oxygen concentration, etc. (mcpcourse.com)
Results: The H2S donors sodium hydrosulfide and sodium sulfide in pharmacological concentrations reversibly reduced cellular O2 consumption and inhibited hypoxia- but not anoxia-induced HIF-1α protein accumulation and expression of genes downstream of HIF-1 in established cell lines. (starrlifesciences.com)

This has the potential to lead to toxic concentrations of trace metals, sulfide, and ammonia in the hypolimnion, combined with anoxia, which can result in declines in biodiversity as well as fish kills. (versicolor.ca)
Hydrogen sulfide has a characteristic rotten egg odor, but high concentrations damage olfactory fibers so that this odor will not be perceived in the most lethal environments. (msdmanuals.com)

The bacteria prefers temperatures ranging from 25-30 °C, light intensity of 80-121 μmol m-2 s-1, and a max salinity concentration of 4 g L-1 NaCl. (wikipedia.org)
GABA rapidly increases in concentration in plant tissues when a plant encounters environmental stress - i.e. drought, anoxia, acid soils, extreme temperatures, salinity and herbivory. (serious-science.org)

As a secondary complication , it increases calcium concentration inside cells causing fatal cardiac arrhythmias and also increased cellular damage by activating many proteolytic enzymes. (mcpcourse.com)

Ocean general circulation models have shown that the detectable decrease in dissolved oxygen concentrations is driven by increasing ocean surface temperatures and enhanced stratification. (uri.edu)
Comparisons of the U-, C-, and Sr-isotope records with a modeled seawater PO 4 3- concentration curve for the Early Triassic suggest that elevated marine productivity and enhanced oceanic stratification were likely the immediate causes of expanded oceanic anoxia. (lu.se)
Surveys of the lake in August 1971 and August 1974 generally found hypolimnetic dissolved oxygen concentrations and specific conductance consistent with greater mixing… Despite the low dissolved oxygen in 1974, specific conductance measurements from that day show a 16 uS/cm difference from the surface to the bottom, indicating that there was little or no chemical stratification. (versicolor.ca)

anoxia - an absence of oxygen supply to an organ's tissues leading to cell death. (brainline.org)
If we continue business-as-usual CO2 emissions, ocean pH will eventually drop to a point at which a host of other chemical changes such as anoxia (an absence of oxygen) are expected. (skepticalscience.com)

And the theme of this issue, Alum Treatment, offers much hope for reducing the nutrient concentrations that cause excessive algal blooms, anoxia, and other lake problems. (nalms.org)
Dissolved inorganic nutrient concentrations were measured on an autoanalyzer using standard methods [Gordon et al. (mbl.edu)

Vertically migrating amphipods living in the Eastern Tropical North Pacific currently experience temperature changes of 15 degrees Celsius or more and changes in oxygen concentration from saturation to near anoxia. (uri.edu)
The ponds are shallow and experience day-night swings in oxygen concentrations, from super-saturation to anoxia. (mbl.edu)

This happens in response to environmental stress such as extreme temperatures, desiccation, anoxia and food deprivation. (uri.edu)
Complete deprivation of oxygen supply is called "anoxia. (mcpcourse.com)

Simulations were unable to capture the wide diurnal range of observed continuous DO and phytoplankton concentrations, potentially suggesting the need for improved understanding of processes at this time scale. (mdpi.com)

Currently, we are attempting to address this further by measuring NADH in standard fluorimetric cuvettes using home-made 3D-printed plugs in order to induce and maintain anoxia where we can also measure membrane potential by safranine O among other parameters. (mitophysiology.org)
Because 105% alveolar concentration is needed to induce general anesthesia when nitrous oxide is used as a sole anesthetic agent, it is ineffective as a single agent for general anesthesia. (medscape.com)

In this study we developed a novel metric, anaerobic duration, to describe anoxia in aquatic ecosystems. (igb-berlin.de)

Moreover, global declines in bottom‐water oxygen concentrations have the potential to alter OC and Fe cycles in multiple ways, and the net effects of low‐oxygen (hypoxic) conditions on OC and Fe are poorly characterized. (nsf.gov)

Anoxia, NADH levels and membrane potential will be measured throughout these experiments and complement the results of the metabolomic analysis. (mitophysiology.org)

Low oxygen concentrations and high temperatures affect physiological performance and, consequently, vertical distribution and ecology of marine organisms. (uri.edu)
Our results indicate that multiple oscillations in oceanic anoxia modulated the recovery of marine ecosystems following the latest Permian mass extinction. (lu.se)
A broad classification of HABs distinguishes two groups of organisms: the toxin producers, which can contaminate seafood or kill fish, and the high-biomass producers, which can cause anoxia and indiscriminate kills of marine life after reaching dense concentrations. (maryland.gov)

Germination of selected vegetable seeds including corn (Zea mays L.), squash (Cucurbita pepo L.), and tomato (Solanum lycopersicum L.) was studied in water with different concentrations of hydrogen peroxide (H2O2) solution ranging from 0, 0. (researchgate.net)
We evaluated two hydrogen peroxide products, with varying levels of stabiliser, over a range of peroxide concentrations (10-5000 ppm), in-vitro (petri dishes) seed germination and seedling growth for ten crop species. (researchgate.net)

In children, hypocalcemia is defined as a total serum calcium concentration less than 2.1 mmol/L (8.5 mg/dL). (medscape.com)
In term infants, hypocalcemia is defined as total serum calcium concentration less than 2 mmol/L (8 mg/dL) or ionized fraction of less than 1.1 mmol/L (4.4 mg/dL). (medscape.com)
In preterm infants, hypocalcemia is defined as total serum calcium concentration less than 1.75 mmol/L (7 mg/dL) is defined as hypocalcemia in infants weighing less than 1500 g birthweight. (medscape.com)

However, odor provides insufficient warning of hazardous concentrations. (cdc.gov)
at high concentrations, its odor can be sharp and suffocating. (cdc.gov)

Anoxia and Acidosis Tolerance of the Heart in an Air-Breathing Fish (Pangasianodon hypophthalmus). (illumina.com)

Richard LaBrie, Michael Hupfer, Maximilian Lau (2023-02-24 ) Novel tool describing anoxia in lakes - manuscript data (oxygen, nutrients) from Lake Arendsee, Stechlin, Delavan and Mendota. (igb-berlin.de)
Anaerobic duration can be used to predict nutrients concentration (NH4+, SRP, TP) and a fluorescent dissolved organic matter (FDOM) component, and likely many reduced compounds such as Fe, Mn, CH4 and H2S. (igb-berlin.de)

At the same time, we are facing rising atmospheric CO 2 concentrations, which are increasing the p CO 2 and acidity of coastal waters. (copernicus.org)

The levels of the bacteria typically stay relatively low throughout the summer, however it can be associated with very high concentrations under certain conditions. (wikipedia.org)
However, the Mo concentration and δ 98/95 Mo showed high anomalies above the mixing line of river water and seawater in the lower Yodo River and Osaka Bay, implying possible anthropogenic pollution of Mo in the metropolitan area. (frontiersin.org)
At high concentrations it is mildly irritating. (cdc.gov)
High airborne concentrations can also cause corneal inflammation and opacification. (cdc.gov)
slightly irritating in high concentration. (cdc.gov)
at high concentrations. (silverchair.com)
These data suggest that the combination of low calcium and high phosphate concentrations in the presence of glucose enhances cold-induced, iron-dependent injury drastically in Vero-B4 cells, and that a tendency for this pathomechanism also exists in other cell types. (biomedcentral.com)
It causes altitude sickness causing potentially fatal outcomes such as high altitude pulmonary edema (HAPE) and high altitude cerebral edema 由于缺氧损伤(HACE)。缺氧也可以occurred in healthy people when breathing mixtures of gasses with a low oxygen concentration, e.g. (mcpcourse.com)

Prolonged periods of anoxia also may lead to increased internal phosphorus loading in the lake…Precambrian shield lakes, such as Mirror Lake, typically have low rates of internal phosphorus loading, but also tend to be phosphorus limited. (versicolor.ca)
Internal phosphorus loading is a major factor with bottom orthophosphate concentration approaching 1300 ppm in September. (prwd.org)

Groups of 5 male and 5 female rats were exposed to inhalation of phosphamidon at concentrations of 0.05 and 0.5 mg/m 3 or 4 hours a day for 6 weeks. (inchem.org)

varying p CO 2 of 450 and 1300 µ atm and O 2 concentrations of 2-3.5 and 9-10 mg L −1 ) and respiration measured after 3 and 6 days, respectively. (copernicus.org)

In Chapter 2 protein concentrations of hsp 70 were measured in specimens subjected to a range of temperatures within and above what they typically experience. (uri.edu)

However, the lack of quantitative constraints on the details of Early Triassic oceanic anoxia (for example, time, duration, and extent) leaves the links between oceanic conditions and the delayed biotic recovery ambiguous. (lu.se)

In this study, we provided the concentrations and isotope ratios of dissolved Mo and W in the oceans (the North Pacific and Indian Oceans), marginal seas (the East China Sea and Sea of Japan), and a river-estuary system in Japan (from the Uji-Yodo rivers to Osaka Bay). (frontiersin.org)
2009). These effects include changes in the concentration and ratios of sex steroid hormones (Landry et al. (researchgate.net)

Suppression of oxidative phosphorylation leads to cellular anoxia, with adenosine triphosphate (ATP) depletion, inability to extract oxygen from blood delivered to tissues, and lactic acidosis resulting from the body's attempts to generate energy nonoxidatively. (msdmanuals.com)

Specifically, we find that GABA concentration increases under a water deficit and this reduces stomatal opening in an ALMT9-dependant manner. (nature.com)
GABA is a key carbon and nitrogen containing metabolite in both plants and animals that can change concentration rapidly. (serious-science.org)

Systemic damage is usually a secondary result of anoxia caused by loss of lung function. (cdc.gov)

However, more extreme conditions (Ca 2+ was nominally absent and phosphate concentration raised to 25 mM as in the organ preservation solution University of Wisconsin solution) also increased cold-induced injury in rat hepatocytes and porcine aortic endothelial cells. (biomedcentral.com)

In the fatal case, post-mortem examination revealed a fatty liver, congestion of internal organs and brain damage of the type seen in anoxia. (inchem.org)

Organic matter supply to seafloor appears to be the primary factor controlling CH4 production in sediments and its supply to (and concentration in) overlying waters, with bottom-water O2-deficiency exerting only a modulating effect. (geomar.de)

Compared with a 50% concentration of nitrous oxide, the 25% concentration was similarly effective but posed a lower risk of adverse effects, including sedation, nausea, and mild dissociation. (medscape.com)

The results indicate that W has the constant concentration and isotopic composition in the modern ocean as well as Mo. (frontiersin.org)

The Mo concentration was 105.4 ± 3.1 nmol/kg and δ 98/95 Mo was 2.36 ± 0.03 ‰ ( n = 31) throughout the water column, congruent with those in the ocean. (frontiersin.org)

Concentrations of both gases in subsurface waters are affected by ambient O2 levels to varying degrees. (geomar.de)
The total concentration of bile acids does not change, and albumin levels decrease 20-40% due to the increase in plasma volume and the decrease in its production. (biomedcentral.com)
Cellular respiration can reduce the levels of intracellular oxygen concentration, creating a local oxygen gradient. (bmglabtech.com)

The plan is to isolate mouse liver mitochondria, subject them to ADP and substrates in sealed Oroboros chambers, attain anoxia, add the ETC inhibitors and collect fractions at various time points to be evaluated by untargeted metabolomic analysis. (mitophysiology.org)

However, when the environmental O 2 concentration is reduced to ~6% using an ACU, the intracellular [O 2 ] falls to ~4.5% for metabolically less active cells and is close to anoxia for metabolically active cells. (bmglabtech.com)
As the real oxygen concentration experienced by cells in culture is a function of environmental O 2 concentration, cell metabolism, and seeding density, MitoXpress Intra provides the ideal tool to intelligently modulate these parameters to achieve a desired and speciﬁc intra-cellular oxygen concentration. (bmglabtech.com)

In our laboratory we examine the contribution of mitochondrial substrate-level phosphorylation (mSLP) to ATP output and ANT directionality during true anoxia or inhibition of the electron transport chain (ETC) in isolated mitochondria or permeabilized cells. (mitophysiology.org)
Similar Ca 2+ and phosphate concentrations did not increase cold-induced cell injury in the kidney cell line LLC-PK 1 , porcine aortic endothelial cells or rat hepatocytes. (biomedcentral.com)

On the other hand, chemical anoxia is induced by targeted inhibition of ETC components. (mitophysiology.org)

However, the concentrations in deeper water were congruent with those in the oceans (W = 49.9 ± 7.6 pmol/kg, δ 186/184 W = 0.50 ± 0.02 ‰, n = 7). (frontiersin.org)

However, it has come to our attention that targeted inhibition of complex I perturbs mSLP even in the presence of true anoxia. (mitophysiology.org)

i.e. concentrations as in RPMI 1640) evoked a cell injury and loss of metabolic function corresponding to that observed in RPMI 1640. (biomedcentral.com)

In our earlier studies, the concentration of succinate in the body fluid of hard clams was used as an anoxia-stress indicator. (ntou.edu.tw)

Anatomy28

Organisms25

Diseases11

Chemicals and Drugs71

Analytical, Diagnostic and Therapeutic Techniques and Equipment8

Phenomena and Processes35

Disciplines and Occupations1

Technology, Industry, Agriculture3

Health Care3

Geographicals3

Hypoxia6

Sulfide2

Salinity2

Increased cellular1

Stratification3

Absence of oxygen2

Nutrient2

Saturation2

Deprivation2

Phytoplankton1

Induce2

Aquatic1

Declines1

Membrane potential1

Marine3

Hydrogen2

Calcium concentration3

Odor2

Tolerance1

Nutrients2

Atmospheric1

High8

Phosphorus2

Inhalation1

13001

Protein1

Duration1

Ratios2

Tissues1

GABA2

Secondary1

Preservation1

Brain1

Sediments1

Similarly1

Results indicate1

Ocean1

Levels3

Time1

Environmental2

Cells2

Chemical1

Water1

Presence1

Loss1

Body1