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Tag: "compromised" at biology news

Discovery in orange cauliflower may lead to more nutritious crops

...ficiency, common in developing countries, leads to compromised immune systems and is the leading cause of blindness in children. "A large percentage of the human population depends on staple crops for nutrition," said Li, an adjunct assistant professor in the Department of Plant Breeding and Genetics and a sci...

New vaccine prevents CMV infection and disease in mice

...rth defects and a serious problem in patients with compromised immune systems. The body’s natural immunity doesn’t protect against infection by the virus, estimated to be present in 50 to 75 percent of all adults. “Until now, scientists haven’t been able to develop a vaccine to protect against CMV,” said D...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...ry quiet of many backcountry sites is increasingly compromised by aircraft noise. In order to fulfill their mandate to protect natural, cultural, and historic resources, as well as visitor experience, NPS has developed analytical tools to assess lost opportunities to hear and respond to the sounds of nature. A...

Do fruit flies have free will?

...havior and may help combating disorders leading to compromised spontaneous behavioral variability in humans such as depression, schizophrenia or obsessive compulsive disorder. The research will appear in the May 16, 2007 issue of the open-access journal PLoS ONE. ...

Corals that can fight global warming may one day help fragile reefs

...o coral reefs: massive loss of critical symbionts, compromised immunity and ability to fight pathogens, and increased susceptibility to lethal infectious microorganisms," reported Harvell. However, the precise connection between warmer waters and coral disease is unclear. "It is difficult to pinpoint yet how t...

Scientists identify pancreatic cancer stem cells

...ed during patient surgery in "xenograft" mice with compromised immune systems. Researchers removed tumors after they grew, and then sorted millions of cancer cells to isolate those that had one or more of three surface protein markers -- CD44, CD24, and ESA. They chose these markers, called cell adhesion molecu...

Tracking sperm whales and jumbo squid

... whales may favor jumbo squid that are in some way compromised and thus easier to capture," the authors wrote. "This research provided a unique opportunity to learn more about two species that are very difficult to study in their natural habitat," Davis noted. "In the future, this co-tagging approach should y...

New study challenges 'critical period' in childhood vision development

...its plasticity remains even after several years of compromised sensory experience. The results of this study provide an argument for even late-stage blindness treatments and guide researchers towards an improved understanding of the complexities of the brain. ...

Stanford scientists make major breakthrough in regenerative medicine

...ells and tissues to be reprogrammed and regenerate compromised organs in humans," said Ayelet Voskoboynik, Ph.D., of Stanford University and first author of the study. Missing limbs, scarred hearts, broken spines, and wounded muscles always try to repair themselves, but often the result is invalidism or disea...

MicroRNA helps prevent tumors

...ichael Hemann to inject these cells in mice with a compromised immune system. The scientists found that the mice with cells that expressed the version of Hmga2 with the disrupted let-7 sites developed tumors. Overall, the results highlight a new mechanism for cancer formation. Hmga2, and perhaps certain other...

A revolution in the monitoring of unborn babies

...acenta is unhealthy and hence the fetus may become compromised due to lack of oxygen.? In England during 2004 and 2005 17 per cent of inpatient cases for women in NHS hospitals were due to complications of pregnancy or childbirth. By helping to detect potential problems with unborn babies early and monitoring...

Widely used hepatitis B drug spurs HIV drug resistance

...sed drug, emtricitabine, its effectiveness is also compromised by entecavir, she says. Thio began to investigate entecavir's effects on HIV in fall 2006 after noticing reports of anti-HIV activity in two co-infected patients, one at the Johns Hopkins Moore Clinic, which specializes in HIV/AIDS care, and anoth...

The biggest bug in gut discomfort

...ant days, it can be life threatening to those with compromised immune systems. A rare but serious complication of C. jejuni infection is the triggering of the autoimmune disorder, Guillain-Barré paralysis. Yale researchers now have some answers to one of the most basic puzzles surrounding C. jejuni infections...

Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack

... the very young and those whose immune systems are compromised due to HIV/AIDS, cancer or some other medical condition. An estimated 50 million Americans fall into this category, Longini said. ...

Stanford discovery may help predict when toxoplasma can be deadly

...t can cause severe infections in individuals with compromised immune systems. In addition, women infected for the first time while pregnant can pass the organism to their fetuses, potentially resulting in sight and hearing problems as well as learning disabilities. The new findings have implications for det...

Dragonfly's metabolic disease provides clues about human obesity

.... Another clue is that some AIDS patients, with compromised immune systems, have chronic problems with Cryptosporidium (a protozoan parasite closely related to the one found in dragonflies) that over time impairs their metabolism in a similar fashion to what Schilder and Marden found for infected dragonflies....

Three-in-one virus killer prevents common, often fatal infections

...es ?and risk of death ?in transplant patients with compromised immune systems. The findings, to be reported in th...g illnesses in transplant patients and others with compromised immune systems. The CTLs proved effective and safe in all 11 bone marrow transplant patients, who...

Mouse study reveals new clues about virulence of 1918 influenza virus

...dest at the very young, the elderly and those with compromised immune function, the 1918 flu disproportionately killed young people in the prime of life. Modern analyses of 1918 flu victim autopsy samples show extreme and extensive damage to lung tissues. This observation gave rise to the hypothesis that the 191...

Innovative method for creating a human cytomegalovirus vaccine outlined

...S patients, transplant recipients, and others with compromised immune systems are at risk for complications. The virus is a member of the herpes virus family, which includes the herpes simplex viruses, the viruses that cause chicken pox (varicella-zoster virus), and infectious mononucleosis (Epstein-Barr virus.)...

Researchers attack tumor cells by exploiting dependency on sugar metabolism

... stimulated mitochondrial function and drastically compromised the ability of the tumor cells to proliferate in low oxygen conditions. Restoration of LDH-A activity reestablished the glycolytic phenotype of the tumor cells. These data suggest that alterations in glucose metabolism in cancer cells are linked wit...

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