Latest Hypoxia Stories
In an important study that may shed light on human ability to adapt to hypoxia, or inadequate levels of oxygen, researchers at the University of California, San Diego School of Medicine have proven that the genome of flies exposed to long-term hypoxia are changed to permanently affect gene expression. Their findings, to be published online by the journal of the Proceedings of the National Academy of Sciences (PNAS) the week of January 24, 2011, may lead to new targets for development of...
Large hypoxic zones low in oxygen long have been thought to have negative influences on aquatic life, but a Purdue University study shows that while these so-called dead zones have an adverse affect, not all species are impacted equally.Tomas Höök, an assistant professor of forestry and natural resources, and former Purdue postdoctoral researcher Kristen Arend used output from a model to estimate how much dissolved oxygen was present in Lake Erie's hypoxic zone each day from 1987 to...
The giant dragonflies of ancient Earth with wingspans of up to 70 centimeters (28 inches) are generally attributed to higher oxygen atmospheric levels in the atmosphere in the past. New experiments in raising modern insects in various oxygen-enriched atmospheres have confirmed that dragonflies grow bigger with more oxygen, or hyperoxia.However, not all insects were larger when oxygen was higher in the past. For instance, the largest cockroaches ever are skittering around today. The question...
Research: Effect of high flow oxygen on mortality in chronic obstructive pulmonary disease patients in pre-hospital setting: Randomized controlled trialA change to the way paramedics use oxygen when treating patients with chronic lung disease could cut the death rate in these cases by up to 78%, according to a new study published on bmj.com today.Researchers based in Australia found the risk of death in patients with chronic obstructive pulmonary disease (COPD) was significantly reduced by...
ORMOND BEACH, Fla., Oct. 1 /PRNewswire/ -- CO2Meter.com has introduced a new 25% Oxygen Level Sensor designed to drastically lower maintenance costs by simplifying the calibration process. Oxygen sensors are used in any environment where oxygen depletion can occur. This includes liquid nitrogen storage ("cryorooms"), vacuum test chambers, "permit-required" enclosed spaces, or any workplace that contains pressurized gases that can displace oxygen. In addition, oxygen sensors are used to...
"The upcoming ESC Clinical Practice Guidelines for the management of STEMI, to be published in 2012 will address this issue on the basis of the Cochrane review and the entire literature," said Gabriel Steg from Hôpital Bichat (Paris, France), co-chairman of the ESC Task Force on the management of AMI-STEMI.Supplemental oxygen therapy, said Stefan James, also co-chairman of the ESC AMI-STEMI Task Force, is currently recommended in European guidelines for patients with desaturation...
The environmental impact of millions of gallons of oil still in the Gulf of Mexico from the Deepwater Horizon incident may depend on microscopic helpers: Bacteria that consume oil and other hydrocarbons and could break down the spilled crude, making it disappear. That's the topic of an article in the current issue of Chemical & Engineering News (C&EN), ACS' weekly newsmagazine. It points out that the oil-eating bacteria are beneficial in helping to clear away the oil. Their...
Air travel poses no "significant threat" to cardiovascular health, with few conditions likely to warrant restrictions, concludes new guidance published in the journal Heart.The guidance, which has been drawn up by the British Cardiovascular Society, was prompted by widespread public concern about the impact of air travel on health and a House of Lords Science and Technology Committee report on this same issue, published in 2007.The House of Lords report called for definitive...
Mice at altitude save oxygen during exercise by using more carbohydrates rather than fat, Canadian and Peruvian scientists revealThis fuel-preference represents an adaptation in high altitude mice to use oxygen more efficiently than their low-altitude counterparts."Andean mouse species have independently evolved a strategy to maximize energy yield when little oxygen is available" explain lead researchers Marie-Pierre Schippers and Grant McClelland from McMaster University.It is very...
The northern Gulf of Mexico hypoxic zone, an underwater area with little or no oxygen known commonly as the "dead zone," could be larger than the recent average, according to a forecast by a team of NOAA-supported scientists from the Louisiana Universities Marine Consortium, Louisiana State University, and the University of Michigan.Scientists are predicting the area could measure between 6,500 and 7,800 square miles, or an area roughly the size of the state of New Jersey. The average of the...
