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Tag: "oxygen" at biology news

U-M team recovers ancient whale in Egyptian desert

... metabolic inactivity ?and subsequent freedom from oxygen dependence ?could be replicated in humans, it coul... Cancer cells, Roth explained, aren't dependent on oxygen to grow. As a result, they are more resistant to radiation than surrounding healthy cells, which nee...

Medical molecules designed to respond to visible light that can penetrate tissue

...ss photoactive MMCT states: Visible light induced, oxygen independent DNA photocleavage (INOR 329)," will be presented by Mongelli during the general poster session, 7 to 9 p.m., Sunday, March 13, in Convention Center Hall D. The poster has also been selected for the Sci_Mix session 7 to 9 p.m. Monday, Marc...

Disease diagnosis, biodefense among UH chemical research projects

...ing blood pressure, treating cancer and increasing oxygen absorption in lung tissue. Czernuszewicz's research is focused on the roles of salivary nitrophorins in storing and releasing NO and binding histamine by using resonance Raman spectroscopic techniques as a probe of molecular structure. # Yuriy Fofan...

NASA study finds snow melt causes large ocean plant blooms

...em. Increases in phytoplankton amounts can lead to oxygen depletion in the water column and eventually to a ... by phytoplankton breaks down and decomposes, more oxygen gets consumed in the process. An increase in phytoplankton could therefore cause oxygen deficiencies...

Yeast Network Prevents Damage By Oxygen Radicals

Reactive oxygen species (ROS), or 'oxygen radicals', have been identified as major contributors to signs of premature aging, increased cancer prevalence linked to inflammation-associated syndromes and a variety of human diseases. Now scientists at the University of ...

First technology to remove prions that cause vCJD from blood launched

...erapeutic value of a blood transfusion such as the oxygen carrying properties of red cells. A filtration approach also avoids the ethical issues associated with diagnostic testing, such as alerting a blood donor that he or she has an invariably fatal disease. Regardless, there are no available diagnostic te...

Anammox bacteria produce nitrogen gas in oceans' snackbar

...bacteria for the first time a few years ago in the oxygen poor Black Sea and now also in the open ocean. Thi...mmox bacteria are present in the Atlantic ocean in oxygen poor waters at ~100 m depth. The number and activity of anammox bacteria present at this depth is su...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...can also overwhelm a marine ecosystem by depleting oxygen in the water. Scientists suspect that many harmful...g periods of time. Another concern is hypoxia, or oxygen depletion, caused by excessive algae growth. As the algal mass sinks, it is consumed by bacteria, wh...

Man-made wetland's effectiveness similar to natural marsh

...d on waterways for survival. Algae essentially rob oxygen from water in a pond, lake and even the ocean. "We saw a pretty significant reduction in phosphorus and nitrate concentrations ?close to the kind of decrease we typically see in a natural wetland," said William Mitsch, a study co-author and director...

Low oxygen likely made Great Dying worse, greatly delayed recovery

...tists suggests that a sharp decline in atmospheric oxygen levels was likely a major reason for both the elev...d above sea level became uninhabitable because low oxygen made breathing too difficult for most organisms to survive, said Raymond Huey, a UW biology professo...

Scientists reveal the shape of a protein that helps retroviruses break into cells

...tists suggests that a sharp decline in atmospheric oxygen levels was likely a major reason for both the elev...d above sea level became uninhabitable because low oxygen made breathing too difficult for most organisms to survive, said Raymond Huey, a UW biology professo...

Python a 'hearty' eater

...umes a large meal. Hicks observed that the snake's oxygen consumption increased seven-fold within 24 to 48 hours after eating. This heightened metabolic state lasted for up to seven days and was accompanied by a rapid remodeling of the ventricle--the lower portion of the blood-pumping organ. In experiments,...

Scientists find viruses can't stick to sea bugs in the dark

...e as vital to the survival of life on earth as the oxygen producing plants are on land. But marine bacteria ...n," explains Ying Jia. Algal blooms can use up the oxygen in water and block out the sunlight that other organisms need to live. "If there is not sufficient l...

15 generations of untrained jocks, couch potatoes show big physiological adaptations

...tudy the genetic role in endurance performance and oxygen delivery systems. Results of this large longitudi...line had a greater running endurance and increased oxygen consumption (12%) than the "couch potatoes." These differences were mainly due to peripheral improve...

Scientists discover global pattern of big fish diversity in open oceans

...features. Sea surface temperature and the level of oxygen in the water were the most important factors in determining where the big fish in the open ocean congregate. These hotspots were mostly in subtropical areas with warm waters, sufficient oxygen, and sharp temperature gradients that serve to aggregate ...

Circulating stem cells play small role in lung repair

...ow sacs along the airways where the blood takes in oxygen and discards carbon dioxide. The processes by which alveoli recover from damage are complex and incompletely understood, Zander said. Previous research showed that type II pneumocytes in the lungs are known to play a central role, but the role of th...

Candida albicans Genome Fully Annotated

...ow sacs along the airways where the blood takes in oxygen and discards carbon dioxide. The processes by which alveoli recover from damage are complex and incompletely understood, Zander said. Previous research showed that type II pneumocytes in the lungs are known to play a central role, but the role of th...

One hit of crystal meth causes birth defects

...ainst free radicals ?highly activated, destructive oxygen molecules that have been implicated in cancer and neurodegenerative diseases, says Wells. This vulnerability lasts from the embryonic stage through the later fetal period, times when organ structures and mental functions develop. "People usually thi...

Researchers extend mouse lifespan by protecting against free radicals

...the significance of free radicals, and of reactive oxygen species in particular, in the aging process." This study and others that are able to extend animal lifespan beyond the normal limits are very powerful in that they most clearly demonstrate the important steps and pathways in the aging process, Rabin...

Researchers Discover That Microbes Can Produce Miniature Electrical Wires

...d how Geobacter can live in environments that lack oxygen and carry out such unique phenomena as removing or...?Lovley said. Geobacter can live in the absence of oxygen because of its ability to transfer electrons outside the cell onto iron minerals, which are natural ...

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