News tagged with hypoxia
550 million years ago rise in oxygen drove evolution of animal life
Researchers at the University of Oxford have uncovered a clue that may help to explain why the earliest evidence of complex multicellular animal life appears around 550 million years ago, when atmospheric ...
Dec 17, 2010 |
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New report warns of expanding threat of hypoxia in U. S. coastal waters
A report issued today by key environmental and scientific federal agencies assesses the increasing prevalence of low-oxygen “dead zones” in U.S. coastal waters and outlines a series of research and policy ...
Sep 06, 2010 |
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Sleep apnea thickens blood vessels, increases heart disease risk
Obstructive sleep apnea, or periodic interruptions in breathing throughout the night, thickens sufferers' blood vessels. Moreover, it increases the risk of several forms of heart and vascular disease.
May 04, 2009 |
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How chemotherapy drugs block blood vessel growth, slow cancer spread
Researchers at the Johns Hopkins University School of Medicine have discovered how a whole class of commonly used chemotherapy drugs can block cancer growth. Their findings, reported online this week at the Proceedings of ...
Jan 22, 2009 |
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New light-emitting biomaterial could improve tumor imaging, study shows
A new material developed at the University of Virginia - an oxygen nanosensor that couples a light-emitting dye with a biopolymer - simplifies the imaging of oxygen-deficient regions of tumors. Such tumors are associated ...
Nanotechnology / Nanomaterials
Aug 10, 2009 |
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Increasing oxygen delivery: Allosteric effectors of human hemoglobin
(PhysOrg.com) -- Numerous diseases, such as cardiovascular ailments and cancer, are characterized by a lack of oxygen in specific tissues. Therefore, increasing the supply of oxygen delivered by red blood ...
Dec 23, 2010 |
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Worm provides clues about preventing damage caused by low-oxygen during stroke, heart attack
Neurobiologists at Washington University School of Medicine in St. Louis have identified pathways that allow microscopic worms to survive in a low-oxygen, or hypoxic, environment.
Medicine & Health / Medical research
Jan 29, 2009 |
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Low Oxygen Recruits Inflammatory Cells to Tumors, Stimulating Growth
(PhysOrg.com) -- The inner regions of tumors have a low-oxygen content and often contain inflammatory cells called macrophages, which researchers suspect promote tumor growth. Now, University of Pennsylvania School of Medicine ...
Apr 21, 2010 |
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Holding breath for several minutes elevates marker for brain damage
Divers who held their breath for several minutes had elevated levels of a protein that can signal brain damage, according to a new study from the Journal of Applied Physiology. However, the appearance of the protein, S100B, ...
Medicine & Health / Medical research
Aug 04, 2009 |
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Deep plumes of oil could cause dead zones in the Gulf
A new simulation of oil and methane leaked into the Gulf of Mexico suggests that deep hypoxic zones or "dead zones" could form near the source of the pollution. The research investigates five scenarios of oil and methane ...
Aug 19, 2010 |
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