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Latest Hypoxia Stories

2009-08-11 08:31:58

Biologists have long known how adaptive evolution works. New mutations arise within a population and those that confer some benefits to the organism increase in frequency and eventually become fixed in the population.A significant challenge for evolutionary biologists, however, has been to identify the specific mutations that are responsible for adaptive change. But new research by an international team led by Jay Storz of the University of Nebraska-Lincoln has succeeded in identifying the...

2009-08-10 14:59:04

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 with increased cancer aggressiveness and are particularly difficult to treat.Oxygen nanosensors are powerful new research tools that one day may also be used for the diagnosis and detection of diseases and for planning treatment strategies.The new material is...

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2009-08-01 07:48:05

Jessica Meir goes to extreme environments to learn how birds and mammals thrive in conditions that humans cannot tolerate, and she tells readers all about it My main research interest is physiology in extreme environments, particularly those with low levels of oxygen. Animals that thrive in such "hypoxic" environments are ideal species to investigate for how their physiology responds. In addition, studying adaptations to hypoxia in animals at high altitude, during hibernation, or in diving...

2009-07-30 10:17:38

UCD Conway researchers have characterized epigenetic signature changes in prostate cells under conditions of low oxygen levels that may lead to tumor development. The results of the study published this month in the scientific journal, Human Molecular Genetics may provide important targets for the early detection and manipulation of prostate cancer.Chronic hypoxia, or low tissue oxygen levels, is a natural feature of the aging prostate either due to declining blood flow to the area or local...

2009-07-29 11:12:14

Inhibiting an enzyme in the brains of newborns suffering from oxygen and blood flow deprivation stops a type of brain damage that is a leading cause of cerebral palsy, mental retardation and death, according to researchers at Cincinnati Children's Hospital Medical Center.Reporting their results in the Journal of Neuroscience, the scientists show blocking the brain enzyme, tissue-type plasminogen activator (tPA), prevents progressive brain damage triggered by the lack of oxygen and blood...

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2009-07-25 13:35:00

A scientist reported Friday that the Gulf of Mexico's "dead zone," where low amounts of oxygen in the water make it hard for anything to live there, is less than half the size as predicted earlier this year. Every year in the gulf bacteria, Which feed on algae blooms from the flow of farming runoff and other nutrients from the Mississippi River, cause the notorious hypoxic area to form in the Gulf. According to Nancy Rabalais, a researcher that specializes in the problem for the Louisiana...

2009-06-29 16:31:52

Exercise requires the integrated activity of every organ and tissue in the body, and understanding how these respond to the decreased oxygen levels present at moderate to high altitude is the focus of the current special issue of High Altitude Medicine & Biology, a peer-reviewed journal published by Mary Ann Liebert, Inc. (www.liebertpub.com). The entire issue is available free online at www.liebertpub.com/ham Guest Editor Peter D. Wagner, MD, Distinguished Professor of Medicine &...

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2009-06-18 13:00:00

University of Michigan aquatic ecologist Donald Scavia and his colleagues say this year's Gulf of Mexico "dead zone" could be one of the largest on record, continuing a decades-long trend that threatens the health of a half-billion-dollar fishery. The scientists' latest forecast, released today, calls for a Gulf dead zone of between 7,450 and 8,456 square miles"”an area about the size of New Jersey. Most likely, this summer's Gulf dead zone will blanket about 7,980 square miles, roughly...

2009-06-05 23:03:24

A specific class of drugs could be effective in treating babies vulnerable to sudden infant death syndrome, Canadian researchers suggest. Researchers at McMaster University in Hamilton said when mothers-to-be smoke during pregnancy the exposure of the fetus to nicotine results in its inability to respond to decreases in oxygen -- known as hypoxia -- which may result in a higher incidence of SIDS. In the study involving rats, researchers found the diabetic medication glibenclamide can reverse...

2009-06-03 10:14:39

A new study has identified a specific class of pharmaceutical drugs that could be effective in treating babies vulnerable to Sudden Infant Death Syndrome (SIDS), because their mothers smoked during pregnancy.According to researchers at McMaster University, exposure of the fetus to nicotine results in the inability to respond to decreases in oxygen"”known as hypoxia"”which may result in a higher incidence of SIDS. In the same study on rats, they found that the diabetic medication...


Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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