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Why diving marine mammals resist brain damage from low oxygen
12-18-2007 · EurekAlert!Certain animals -- including dolphins, whales and sea otters -- appear to be protected by elevated levels of oxygen-carrying proteins in their brains, according to a study by researchers at UC Santa Cruz.
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Keywords: diving, marine, mammals, resist, brain, damage, low, oxygen, mammal
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- Seals Protect Brain, Conserve Oxygen By Turning Off Shivering Response On Icy Dives
10-11-2006 · ScienceDaily
Seals shiver when exposed to cold air but not when diving in chilly water, a finding that researchers believe allows the diving seal to conserve oxygen and minimize brain damage that could result from long dives. This research into hypothermia and hypoxia is important to treating people who are hypothermic or who have suffered hypoxia following cardiac arrest, stroke, etc. Research was presented at the American Physiological Society conference, " Comparative Physiology 2006: Integrating Diversity."
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- Mice with a migraine show signs of brain damage
04-30-2007 · EurekAlert!
Migraines may be doing more than causing people skull-splitting pain. Scientists have found evidence that the headaches may also be acting like tiny transient strokes, leaving parts of the brain starved for oxygen and altering the brain in significant ways.
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- Oregon researchers study widespread areas of low oxygen off northwest coast
02-15-2008 · EurekAlert!
A team of scientists, including NOAA's William Peterson, studying the California Current -- a slow-moving mass of cold water that travels south along the coast from British Columbia to Baja California -- are seeing increasing areas of water off Washington and Oregon with little or no oxygen, possibly resulting in the deaths of marine animals that cannot leave the low-oxygen areas.
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- Antioxidants decrease disease in a Drosophila model of Alzheimer's disease
12-14-2006 · EurekAlert!
Alzheimer's disease (AD) is a neurodegenerative disorder in which brain cells damaged by naturally occurring chemicals known as reactive oxygen species have been observed. Whether this oxidative damage causes neurodegeneration or is a consequence of it has not been previously determined. A study now indicates that oxidative damage contributes to neurodegeneration in a Drosophila model of disorders such as AD, suggesting that targeting antioxidant pathways might provide a new approach for treating individuals with AD.
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- Low oxygen in coastal waters impairs fish reproduction
08-28-2007 · EurekAlert!
Low oxygen levels in coastal waters interfere with fish reproduction by disrupting the fishes' hormones, a marine scientist from the University of Texas at Austin Marine Science Institute has found.
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- 'Sundried tide' -- silent, natural disaster
07-03-2007 · EurekAlert!
In a paper published in scientific journal Marine Biology, Dr. Ken Anthony and Dr. Ailsa Kerswell, of the ARC Center of Excellence for Coral Reef Studies at the University of Queensland and James Cook University have revealed that extreme low tides on clear sunny days can lead to widespread damage of coastal coral colonies.
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- Early environmental exposure may accelerate age-related neurodegeneration
06-27-2007 · EurekAlert!
Exposure to iron during the first weeks of life in combination with exposure later in life to a common herbicide may contribute to the subsequent degeneration of brain cells associated with the onset of Parkinson's disease (PD), according to a new study in mice. The findings also showed that a compound that protects cells in the body from damage from certain forms of oxygen, a kind of antioxidant, could suppress such neural degeneration.
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- Carbon monoxide protects lung cells against oxygen-induced damage
01-18-2007 · EurekAlert!
Researchers at the University of Pittsburgh have demonstrated that low-dose carbon monoxide administered in conjunction with oxygen therapy markedly inhibits oxygen-induced damage to lung cells. These findings, being reported in the January 19 issue of the Journal of Biological Chemistry, have significant implications for the treatment of acute respiratory distress syndrome, or ARDS, according to the study's authors.
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- A silent pandemic: Industrial chemicals are impairing the brain development of children worldwide
11-07-2006 · EurekAlert!
Researchers found that 202 industrial chemicals have the capacity to damage the human brain, and they conclude that chemical pollution may have harmed the brains of millions of children worldwide.
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- Bottleneck in blood supply makes brain vulnerable to strokes
01-03-2007 · EurekAlert!
A team of University of California, San Diego physicists and neuroscientists has discovered a bottleneck in the network of blood vessels in the brain that makes it vulnerable to strokes. The finding may explain the origin of the puzzling damage to the brain's gray matter often detected in brain scans, especially among the elderly.
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