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Tag: "survives" at biology news

Studies to find better ways to preserve human eggs, ovarian tissue under way

... tissue preserved both ways into mice to see if it survives and starts making proper connections. “The reason for using ovaries is when you have cancer, if you need chemotherapy, you often don’t have time to go through stimulation cycles to get oocytes,” says Dr. Emmi. “You are concentrating on getting rid...

Revealed -- Mosquito genes that could be controlling the spread of killer viruses

...nding of the mechanisms by which a pathogen either survives inside the insect body, or is killed by the insect’s defences.” The international research team, led by Imperial PhD student Robert Waterhouse, focused on comparing the immunity genes of the Aedes mosquito with similar groups of genes in the harml...

Antifungal drug kills TB bug

...ster’s Faculty of Life Sciences. "The bacterium survives the initial attack by the body’s immune system and then lies dormant, usually in the lungs, waiting for any sign of weakness, such as a secondary infection. Its resurgence over the last 20 years has been closely associated with the AIDS epidemic, whi...

Amur leopard still on the brink of extinction, scientists say

... census confirmed once again that the Amur leopard survives on very shaky ground," said Pavel Fomenko, biodiversity conservation program coordinator at the Far-Eastern branch of WWF in Russia. Fomenko said encroaching civilization, new roads, poaching, exploitation of forests, and climate change had contri...

Salmonella survives better in stomach due to altered DNA

...he DNA of the pathogen says something about how it survives and is transmitted. When a pathogen reproduces, the DNA can change a bit and this can lead to changes in the genetic characteristics. This can, for example, lead to antibiotic resistance but also heat or acid resistance. The pathogens with the best g...

PNAS study reveals why organs fail following massive trauma

...unately, the body does not know what to do when it survives an injury that would have been fatal until recently in human evolution. Nearly one third of the time, mechanisms in place to protect people from disease misfire seven to ten days after severe injury, causing multiple organ failure. That is one reason...

Solved: The mystery of flesh-eating bacteria's relentless attack

...n-8 survived. "The amount of interleukin-8 that survives is inversely related to how much SilCR there is in the culture," said Hanski. This may be one reason why some strains are less virulent than others; they might make more SilCR. "It would be interesting to study the amount of SilCR produced by the oth...

Heart has enough oxygen to survive hypothermia, CPR crucial

... the critical variable in whether a mammal's heart survives while in a hypothermic state. Writing in the July issue of the American Journal of Physiology-Heart and Circulatory Physiology, researchers found no significant difference in the amount of oxygen available to the heart between rats exposed to one h...

DOE JGI finishes 100th microbial genome

...es carbon dioxide and nitrogen; produces hydrogen; survives acidic, anaerobic, and low-temperature conditions. Bioremediation Burkholderia species. Jim Tiedje, Michigan State University. Outstanding degrader of polychlorinated biphenyls (PCBs). Chromohalobacter salexigens DSM 3043. (formerly Halomonase...

Single cell amoeba increases MRSA numbers 1000- fold

...ver, instead of being digested by the amoeba, MRSA survives and replicates whilst inside the amoeba. Prof Michael Brown and colleagues at the University of Bath, found that MRSA in association with amoebae increased in numbers 1000- fold. The pathogenic bacteria, Legionella, also replicate inside amoebae an...

The critical importance of mangroves to ocean life

...But more than half of the dissolved organic matter survives the attack from sunlight or bacteria. The authors measured the chemical signature in water samples from the massive mangrove forest in northern Brazil, using natural carbon isotopes and nuclear magnetic resonance spectroscopy--an established and co...

Thin tough skin, slow-growing gills protect larval Antarctic fish

...hile the larvae of one species, the bald notothen, survives using high levels of AFPs like the adults, the researchers were astonished to find that the dragonfish and silverfish hatchlings have too little to allow survival during direct contact with ice. Looking more closely, the researchers discovered that t...

Odd energy mechanism in bacteria analyzed

...because it dominates microbial life in the oceans, survives where most other cells would die, and plays a major role in the cycling of carbon on Earth. These bacteria may have been thriving for a billion years or more, but they have the smallest genetic structure of any independent cell and were only first di...

Study Holds Promise For New Way To Fight HIV

...stern Siberia. Dr Lister said: "The fact that DNA survives in fossil bone that is thousands of years old is an exciting bit of science in itself. Now we can analyse these ancient DNA samples from the bones of a mammal that has been extinct for over 8000 years and show that they are directly related to a livi...

Extinct giant deer's descendant found in UK

...stern Siberia. Dr Lister said: "The fact that DNA survives in fossil bone that is thousands of years old is an exciting bit of science in itself. Now we can analyse these ancient DNA samples from the bones of a mammal that has been extinct for over 8000 years and show that they are directly related to a livi...

Human brain is still evolving

...plexity - is likely still going on. If our species survives for another million years or so, I would imagine that the brain by then would show significant structural differences from the human brain of today." For both Microcephalin and ASPM, Lahn and his colleagues are trying to find out the precise traits ...

Proposal would allow wild animals to roam North America

...in Arizona, New Mexico, Texas and Mexico, now only survives in a small area of northern Mexico. Evidence shows that animals near the top of the food chain play important roles in structuring ecological systems and maintaining biodiversity, according to the paper. These keystone species -- animals that contri...

Purdue scientists may have found key to halting spinal cord damage

... gone. But the acrolein that these attacks release survives in our bodies much longer, for several days at least, and its toxicity is well documented." For example, acrolein has long been known to cause cancer when its concentration in the body rises, and not much is needed to be dangerous. When a person inh...

Roots Engage in Underground Chemical Warfare

...rcome the plant's defenses. The bacterium not only survives exposure to the antimicrobial substances, it also blocks the plant's ability to produce them. Both Vivanco and Ausubel are supported by separate awards from the division of Molecular and Cellular Biosciences at the National Science Foundation (NSF)....

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