Tag: "vulnerable" at biology news

Viruses found in untreated city water

...River. Sand and gravel aquifers are among the most vulnerable to fecal contamination. The La Crosse Water Utility includes 15 wells and 212 miles of water main. In 2003, the water utility delivered an average of 12 million gallons of water per day to its customers. ...

Drought in the West linked to warmer temperatures

... climate warming. "The Western United States is so vulnerable to drought, we thought it was important to understand some of the long-term causes of drought in North America," said lead author Dr. Edward R. Cook of the Lamont Doherty Earth Observatory's tree ring laboratory. The study revealed that a 400-year-lo...

Environmental exposures before and after birth can harm children's lungs

...idence suggests that the respiratory system may be vulnerable to damage caused by inhaled environmental agents during the prenatal period," said Rachel L. Miller, MD, the study's lead author at the Columbia Center for Children's Environmental Health, part of the Columbia University Mailman School of Public Heal...

Estrogen protects male rats from aortic aneurysms

...hat eats away at the wall of the aorta, leaving it vulnerable to expansion and rupture. However, when Woodrum treated male rats with estradiol, a form of the female hormone estrogen, and then tested their aortas, he found that MMP-9 activity was substantially decreased. At this year's meeting, Woodrum will rec...

UNC scientists identify sticky protein in sickle cell red blood cells

..."Even though sickle cell patients are particularly vulnerable to blocked blood vessels, the signaling mechanisms identified in sickle reticulocytes seem to be present in reticulocytes found in other anemic patients as well," said Brittain. "Our current thinking is that these results may benefit patients sufferi...

Babies born after surgery on eggs

...ondria have only one copy of this DNA, making them vulnerable to damage as women age. In contrast, mitochondria in the granulosa cells have around five copies. Because the method involves adding a woman's own mitochondria to her eggs, it is likely to be less controversial than using mitochondria from other wom...

Calorie restriction leads to some brain benefits but not others in mice

...and that the nervous system may be one of the most vulnerable targets," Dugan says. "Most of that evidence has been indirect, though. By using sensitive, state-of-the-art methods, we were actually able to see which cells are producing excess levels of free radicals." Dugan and her colleagues then evaluated anim...

Sandbagging cancer in the bloodstream

...lls "sandbagged" in the bloodstream where they are vulnerable to attack and clearance from the immune system. "You can imagine that a prolonged treatment [with Src kinase inhibitors] may actually help people ward off some of the most deadly and metastatic cancers," says Cheresh. "Currently, anti-cancer drugs a...

Fly gut's 'sticky spot' for leishmaniasis parasite

... midgut and avoid being excreted at a particularly vulnerable stage of its development. "Identifying and targeting midgut molecules essential for parasite survival represents a novel strategy for development of transmission-blocking vaccines against vector-borne diseases," Valenzuela and colleagues conclude. As...

New AAAS report cites 'serious concerns' with electronic voting

...rned that the American system of voting is broadly vulnerable to error and abuse, and called for a crash-course of study and reform to make results more reliable and to promote better access by voters, especially those who have historically encountered serious impediments to exercising their right to vote. The ...

Initial sensor for p53 tumor-suppressing pathway identified

...hen the breaks cannot be repaired, and the cell is vulnerable to becoming cancerous, critical backup protection governed by the p53 protein kicks in. This protein is the end of the line in a vital signaling cascade that triggers cells with fatally damaged DNA to self-destruct so that they cannot cause cancer. T...

Scientists pioneer biotech techniques to halt infestation of history, art treasures in tropics

...imilar amount lost to other causes). Particularly vulnerable are ancient religious wooden sculptures which, if not properly preserved, can eventually crumble "like a saltine cracker," says Ms. Rivero. The symposium Nov. 4-5 has attracted more than 100 registered curators and students and may lead to the creati...

Global warming's impact on US plants, animals determined from review of dozens of studies

...cies in our own backyards will become increasingly vulnerable to the effects of rising global temperatures."...

New Royal Society journal studies

...and survival. As predators tend to attack the most vulnerable prey to reduce energy loss, preys are expected to advertise their escape ability. We recorded the distress calls (those screams emitted in conditions of the utmost danger) of a small passerine, and examined the relationship between call physical prop...

Illegal tuna fishing and farming leads to demise of species

... of government and industry leaders on the fate of vulnerable Atlantic bluefin tuna stocks, World Wildlife Fund (WWF) today called on participants to make urgent, far-reaching moves to end mismanagement and stop illegal fishing and farming methods used to produce tuna to meet growing consumer demands from the U...

Scientists advocate genomic sequencing of 'living fossil'

...nd homogenization. Because this region appears so vulnerable to evolutionary change, Noonan, Amemiya and Myers predicted that the sequence of the coelacanth protocadherin cluster would be a good indicator of the utility of the whole coelacanth genome sequence for inferring vertebrate phylogeny. Jane Grimwood...

Brain-derived neurotrophic factor (BDNF) appears to modify elements of alcoholism

The brain's dopamine system is particularly vulnerable to activation by addictive substances. New researc...he A allele of the BDNF gene polymorphism might be vulnerable to delirium tremens and violence during intoxication. In other words, violent acts while intoxicate...

Linking empires, economics, evolution

...es. But these large, dominant groups are also more vulnerable to sudden disruptions. Vermeij studies the shells of marine animals both living and long extinct. Blind since childhood, he works entirely by touch. His work on how shelled animals evolve to resist predators or attack their prey led him initiall...

Researchers call for studies on role of BRCA1 mutations in chemotherapy response

...s of a functioning BRCA1 gene may make a cell more vulnerable to chemotherapy agents that damage DNA, such as platinum-based compounds. In addition, BRCA1 has also been shown to be involved in the regulation of cell division, and loss of the gene has been proposed to protect a cell against spindle poisons, a gr...

Citrus shows promise for certain childhood cancer

...als in an unstoppable fashion unstoppably once the vulnerable spot on the cell is hit. "Suppose w...ortunately, breast cancer cells are on the list of vulnerable cells. This makes it all the more imperative to learn how the process works. "We don't have the an...

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(Date:6/19/2013)... birds are threatened with extinction as a result of rising ... The Ohio State University in the US. Their work is ... the human population will continue to pose a threat to ... be a threshold above which population growth would cease to ... in Springer,s journal, Human Ecology . , It has ...
(Date:6/19/2013)... June 19, 2013 A decade-long JDRF-funded study ... Helmholtz Zentrum Mnchen, Germany, is providing a deeper ... risk of developing type 1 diabetes (T1D), highlighting ... for the disease. The study, "Seroconversion to Multiple ... in Children," was published today in The ...
(Date:6/19/2013)... study offers further proof that the divergence of humans ... ago was profoundly influenced by mutations to DNA sequences ... , The study, published June 9 in Nature ... regulation of genes must play an important role in ... chimps in the proteins produced by genes. Indeed, human ...
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