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1,693 results for “Hypoxia”
Fig. 6 in Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Paraná River floodplain
Fig. 6. Relationships between each assemblage attribute and dissolved oxygen, in years of short (white) and moderate floods (black). Attributes where either calculated for the entire fish assemblage (STH+SIH) (a-c) and for the subsets of STH (d-f) and SIH (g-i). Numbers 1-6 are codes of the sampling stations (see Fig. 1).
Dataset for Remarkable Hypoxia Tolerance in Two Demersal Fish Species in the Gulf of California
<p>R code and the required datafile are included in this contribution. Running the R code will allow interested readers to recreate Figure 2 and look at additional environmental parameters for the species' habitat. This supplements the manuscript Gallo, N.D., Levin, L.A., Beckwith, M., and Barry J.P. Home sweet suboxic home: Remarkable hypoxia tolerance in two demersal fish species in the Gulf of California. Ecology. </p>
Data for: Increasing hypoxia on global coral reefs under ocean warming
<p><span class="s1">Ocean deoxygenation is predicted to threaten marine ecosystems globally. However, current and future oxygen concentrations and the occurrence of hypoxic events on coral reefs remain underexplored. Here, using autonomous sensor data to explore oxygen variability and hypoxia exposure at 32 representative reef sites, we reveal that hypoxia is already pervasive on many reefs. 84% of reefs experienced weak to moderate (≤153 to ≤92 μmol O<sub>2</sub> kg<sup>-1</sup>) hypoxia and 13% experienced severe (≤61 μmol O<sub>2</sub> kg<sup>-1</sup>) hypoxia. Under different climate change scenarios based on 4 Shared Socioeconomic Pathways (SSPs), we show that projected ocean warming and deoxygenation will increase the duration, intensity, and severity of hypoxia, with more than 94% and 31% of reefs experiencing weak to moderate and severe hypoxia, respectively, by 2100 under SSP5-8.5. This projected oxygen loss could have negative consequences for coral reef taxa due to the key role of oxygen in organism functioning and fitness.</span></p>
Data for: Increasing hypoxia on global coral reefs under ocean warming
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Supplementary data from: Inherent single-cell heterogeneity of the transcriptional response to hypoxia in cancer cells
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Data from: Hypoxia blunts angiogenic signaling and upregulates the antioxidant system in elephant seal endothelial cells
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Impact of temperature and hypoxia on the size and survival of aquatic insects
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Statistical methods and data for: Absence of heterosis for hypoxia tolerance in F1 hybrids of Tigriopus californicus
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Data from: Hypoxia threatens coral and sea anemone early life stages
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Latitudinal cline for hypoxia but not low pH in Tigriopus californicus
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Data from: HIF-signaling in the prothoracic gland regulates growth and development in hypoxia but not normoxia in Drosophila
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Data from: Coral hypoxia response curve analysis
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Data from: Hypoxia disrupts sex-specific physiology and gene expression leading to decreased fitness in the estuarine sea anemone Nematostella vectensis
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The interplay between prior selection, mild intermittent exposure, and acute severe exposure in phenotypic and transcriptional response to hypoxia
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Data from: Hypoxia disrupts metabolism in coral and sea anemone larvae
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Using complementary biomarkers to unravel fish lifetime exposure to hypoxia and mercury
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Dissolved oxygen and pH data collected in shallow riparian ponds from June - September 2013 for a study on hypoxia and hyperoxia.
Dissolved Oxygen and pH data collected using YSI sondes in shallow riparian ponds over three 72 hour periods in June, July, and September focused on patches of dominant vegetation within this pond. The differences in data represent the impact of these dominant vegetation patches on the oxygen dynamics and metabolism of the aquatic system. Data was collected either hourly or in five minute increments over the three study periods which were intended to capture spring (June), summer (July), and fall (September) conditions in the pond. The pond did experience successive states of pond vegetation over the seasons so some macrophytes are not represented in all seasons. Data also includes summary information taken from the primary oxygen data showing hours of hypoxia or hyperoxia or basicity in the various vegetation treatments.
Data from: Vasohibin1, a new IRES trans-acting factor for induction of (lymph)angiogenic factors in early hypoxia
Hypoxia, a major inducer of angiogenesis, triggers major changes of gene expression at the transcriptional level. Furthermore, global protein synthesis is blocked while internal ribosome entry sites (IRES) allow specific mRNAs to be translated. Here we report the transcriptome and translatome signatures of (lymph)angiogenic genes in hypoxic HL-1 cardiomyocytes: most genes are not induced at the transcriptome-, but at the translatome level, including all IRES-containing mRNAs. Our data reveal activation of (lymph)angiogenic factor mRNA IRESs in early hypoxia. We identify vasohibin1 (VASH1) as an IRES trans-acting factor (ITAF) able to bind RNA and to activate FGF1 and VEGFD IRESs in hypoxia while it exhibits an inhibitory effect in normoxia. This suggests a generalized process of IRES-dependent induction of (lymph)angiogenic growth factors in early hypoxia, with a variable IRESome composition. IRES-dependent translation thus appears as a pivotal process to trigger new vessel formation in ischemic heart.
Vasohibin1, a new mouse cardiomyocyte IRES trans-acting factor that regulates translation in early hypoxia
Hypoxia, a major inducer of angiogenesis, triggers major changes in gene expression at the transcriptional level. Furthermore, under hypoxia, global protein synthesis is blocked while internal ribosome entry sites (IRES) allow specific mRNAs to be translated. Here, we report the transcriptome and translatome signatures of (lymph)angiogenic genes in hypoxic HL-1 mouse cardiomyocytes: most genes are induced at the translatome level, including all IRES-containing mRNAs. Our data reveal activation of (lymph)angiogenic factor mRNA IRESs in early hypoxia. We identify vasohibin1 (VASH1) as an IRES trans-acting factor (ITAF) that is able to bind RNA and to activate the FGF1 IRES in hypoxia, but which tends to inhibit several IRESs in normoxia. VASH1 depletion has a wide impact on the translatome of (lymph)angiogenesis genes, suggesting that this protein can regulate translation positively or negatively in early hypoxia. Translational control thus appears as a pivotal process triggering new vessel formation in ischemic heart.
Multi-omics analysis reveals the glycolipid metabolism response mechanism in the liver of Genetically Improved Farmed Tilapia (GIFT, Oreochromis niloticus) under hypoxia stress
<p><span><b>Background: </b>Dissolved oxygen (DO) in the water is a vital abiotic factor in aquatic animal farming. A hypoxic environment affects the growth, metabolism, and immune system of fish. Glycolipid metabolism is a vital energy pathway under acute hypoxic stress, and it plays a significant role in the adaptation of fish to stressful environments. In this study, we used multi-omics integrative analyses to explore the mechanisms of hypoxia adaptation in Genetically Improved Farmed Tilapia (GIFT, <i>Oreochromis niloticus</i>). </span></p> <p><span><b>Results:</b><b> </b>The 96 h median lethal hypoxia (96h-LH50) for GIFT was determined by linear interpolation. We established control (DO: 5 mg/L) groups (CG) and hypoxic stress (96h-LH50) groups (HG) and extracted liver tissues for high-throughput transcriptome and metabolome sequencing. A total of 581 differentially expressed (DE) genes and 1250 DE metabolites were detected between CG and HG, and were annotated using tools at the KEGG database. We verified the transcript levels of eight DE genes by quantitative real-time PCR.</span></p> <p><span><b>Conclusions: </b>Analyses of essential glycolipid metabolism pathways of GIFT under hypoxia stress showed that, after 96 h of hypoxia stress, lipid metabolism became the primary metabolic pathway in GIFT. Our findings reveal the changes in metabolites and gene expression that occur under hypoxia stress, and shed light on the regulatory pathways that function under such conditions. Ultimately, this information will be useful to devise strategies to decrease the damage caused by hypoxia stress in farmed fish.</span></p>
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.