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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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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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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Reseachers predict larger-than-average Gulf 'dead zone'; impact of oil spill unclear
University of Michigan aquatic ecologist Donald Scavia and his colleagues say this year's Gulf of Mexico "dead zone" is expected to be larger than average, continuing a decades-long trend that threatens the ...
Jun 28, 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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Study links hypoxia and inflammation in many diseases
Yet some athletes deliberately train at high altitude, with less oxygen, so they can perform better. Their bodies adapt to the reduced oxygen.
Medicine & Health / Diseases, Conditions, Syndromes
Feb 18, 2011 |
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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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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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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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Sleep apnea may increase insulin resistance
Sleep apnea may cause metabolic changes that increase insulin resistance, according to researchers from the University of Pittsburgh Medical Center. The intermittent hypoxia associated with sleep apnea causes a distinct drop ...
Medicine & Health / Sleep apnea
May 17, 2010 |
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Air travel no 'significant threat' to cardiovascular health, says new guidance
Air travel poses no "significant threat" to cardiovascular health, with few conditions likely to warrant restrictions, concludes new guidance published in the journal Heart.
Medicine & Health / Diseases, Conditions, Syndromes
Jul 19, 2010 |
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Long-term study shows low oxygen levels in prostate tumors can predict recurrence
Fox Chase Cancer Center researchers have discovered that low-oxygen regions in prostate tumors can be used to predict a rise in prostate-specific antigen (PSA) levels, a marker of tumor recurrence in prostate cancer. The ...
May 15, 2009 |
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Excess oxygen in blood after cardiac resuscitation may increase risk of in-hospital death
Patients who have excessive oxygen levels in arterial blood (hyperoxia) following resuscitation from cardiac arrest have a higher rate of death in the hospital than similar patients without arterial hyperoxia, according to ...
Jun 01, 2010 |
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