Results 281 to 290 of about 3,831,267 (331)
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Hypoxia and environmental epigenetics.
High Altitude Medicine & Biology, 2014Epigenetics refers to long-term modifications of gene activity that can be inherited, either somatically or transgenerationally, but that are independent of alterations in the primary base sequence of the organism's DNA.
Carolyn J. Brown, J. Rupert
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The Biological Bulletin, 2022
Determining the resilience of a species or population to climate change stressors is an important but difficult task because resilience can be affected both by genetically based variation and by various types of phenotypic plasticity.
M. Earhart +3 more
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Determining the resilience of a species or population to climate change stressors is an important but difficult task because resilience can be affected both by genetically based variation and by various types of phenotypic plasticity.
M. Earhart +3 more
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Introduction to Environmental and Economic Consequences of Hypoxia
International Journal of Water Resources Development, 2011Low dissolved oxygen environments (known as hypoxic or dead zones) occur in a wide range of aquatic systems and vary in frequency, seasonality and persistence. While there have always been naturally occurring hypoxic habitats, anthropogenic activities related primarily to organic and nutrient enrichment related to sewage/industrial discharges and land ...
Rutger Rosenberg, Robert J. Diaz
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A large environmental chamber for the study of hypercapnia and hypoxia
Journal of Applied Physiology, 1965The design and operating characteristics of an environmental chamber which can maintain carbon dioxide concentrations between 1 and 20% and oxygen concentrations between 5 and 21% are described. The chamber, which measures 3.66 x 6.10 m (12 x 20 ft), permits acute and chronic studies to be carried out in either large animals or man.
William B. Schwartz, Leslie Silverman
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Suicide by Environmental Hypoxia (Forced Depletion of Oxygen)
The American Journal of Forensic Medicine and Pathology, 1994Suicidal suffocation by forced oxygen depletion (environmental hypoxia) with carbon dioxide (CO2) and with propane is discussed in two cases. No toxicologic proof was available with the former and circumstantial evidence weighed heavily. The latter case demonstrated inhaled propane by an on-scene transthoracic aspirate; all other toxicology specimens ...
Sandra E. Conradi +2 more
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Leukocyte-endothelial interactions in environmental hypoxia
2001Hypoxia induced by reducing inspired PO2 (PIO2) to 70 Torr, promotes a rapid microvascular response characterized by increased leukocyte rolling and adherence to the venular endothelium, leukocyte emigration to the perivascular space and increased vascular permeability.
Norberto C. Gonzalez, John G. Wood
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Superoxide radical production in response to environmental hypoxia in cultured shrimp
Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology, 2006Markers of oxidative stress in response to hypoxia and reoxygenation were assessed in Pacific white shrimp (Litopenaeus vannamei). Adult shrimp were either exposed to hypoxia (1 mg O(2)/L) for 6, 12, or 24 h followed by 1-h reoxygenation, or exposed to hypoxia for 24 h followed by 1- to 6-h reoxygenation.
Mauricio Ahuejote-Sandoval +2 more
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The role of hypoxia‐inducible factor 1‐alpha in inflammatory bowel disease
Cell Biology International, 2021Inflammatory bowel disease (IBD) develops as a result of a combination of genetic predisposition, dysbiosis of the gut microbiota, and environmental influences, which is mainly represented by ulcerative colitis (UC) and Crohn's disease (CD).
Jiuheng Yin +6 more
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Effects of environmental hypoxia on cardiac energy metabolism and performance in tilapia
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 2010The ability of an animal to depress ATP turnover while maintaining metabolic energy balance is important for survival during hypoxia. In the present study, we investigated the responses of cardiac energy metabolism and performance in the hypoxia-tolerant tilapia ( Oreochromis hybrid sp.) during exposure to environmental hypoxia.
Ben Speers-Roesch +5 more
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