Tag: "unable" at biology news

Lead-based paint is poisoning albatross chicks at Midway Atoll National Wildlife Refuge

... to a symptom known as "droopwing"--the chicks are unable to hold their wings tucked up against their bodies, and their wings often drag on the ground. It is a classic symptom of lead poisoning, comparable to the "wrist drop" symptom in humans, said Smith. "If you found this level of lead in a child, the ch...

U. Iowa study adds to understanding of salt-taste

...er. However, young flies with disrupted genes were unable to detect low salt. Disrupting either gene also altered how both young and adult flies reacted to high salt concentrations. "When we disrupt the genes we see defects in behavior," Liu said. "To see if the receptor cell itself is being affected, we m...

Air dried sperm could allow home storage

...r because they were no longer motile and therefore unable to penetrate an egg. "But with the technique intracytoplasmic sperm injection (ICSI), the loss of motility doesn't necessarily mean the loss of ability to fertilize an egg, since this is largely dependent on the DNA (genetic material) that is tightly...

Towards an AIDS vaccine: unusual antibody that targets HIV described by scientists at TSRI

...dies bind to and "neutralize" the virus, making it unable to invade cells. Because neutralizing antibodies a...antibodies against HIV, but they are almost always unable to neutralize the virus. Much of the viral surface is coated with carbohydrates (sugars), which are ...

Researchers find new way to trigger self-destruction of certain cancer cells

...tion. Blocking mTOR with rapamycin leaves the cell unable to make these critical proteins. Blocking the activity of mTOR with rapamycin triggers a biochemical pathway called the JNK cascade in cells that lack a gene called p53, according to Peter Houghton, Ph.D., chair of the St. Jude Department of Molecula...

Scientists find protein that controls prostate cancer's spread

...Tumors that produce a normal amount of RKIP appear unable to make the jump to the vascular system, the researchers report. But if a tumor cell lacks RKIP, metastasis can take place. "The gene encoding RKIP appears to be a novel metastasis suppressor gene, involved in blocking the cell-signaling processes th...

Tips from the Journals of the American Society for Microbiology

...osis can build up to the point where the lungs are unable to provide oxygen to the tissues of the body. In studies of patients with IPF, the average survival rate has been found to be 4 to 6 years after diagnosis. The cause of IPF is currently unknown. In the study, lung specimens from patients with IPF we...

Faster method for growing adult stem cells for bone regeneration developed at Hebrew University

...often results in those cases in which patients are unable to regenerate all of most of damaged bone tissue through natural means. These cases occur due to trauma from accidents or acts of terror or because of birth defects or disease. Aslan has succeeded in utilizing adult stem cells, taken from the bone m...

U-M scientists find cancer's genetic core: 67 genes universally activated in human cancer

...cs expertise to access the data, so they have been unable to take advantage of it." Microarrays are microchips containing thousands DNA probes that are used to profile tissue samples from malignant tumors. Scientists wash tissue samples on the microarray with a solution containing fluorescent probes that g...

New range of antibiotics may present a threat to public health

...their paper. "It is claimed that bacteria will be unable to evolve resistance to them because they attack the "Achilles' heel' ofbacterial cell-wall structure," explains Dr. Bell. However, if this istrue, "the introduction of these substances into general use may provoke the evolution of resistance to our...

'Immortalized' cells enable researchers to grow human arteries

...million Americans who need small vessel grafts are unable to get them because their own or prosthetic vessels are unsuitable. While polymer vessels can be used when large vessels are required, the smaller ones tend to become clogged with clots....

Plants and people share a molecular signaling system, researchers discover

... researchers learned that these mutant plants were unable to close their pores in response to the abscisic acid hormone, revealing that the G-protein alpha subunit is essential for relaying this drought-alert signal. The researchers further discovered that the ultimate targets of the relay race--from abscis...

Hospitalized children experience medical errors at the same rate as adults

...if their parents or guardians are unavailable, are unable to provide authorized consent for some types of medical care, meaning a possible delay to treatment." The study, published in the June issue of Pediatrics, reports that the highest rate of pediatric adverse events - 1.5 per 1000 births - involves bi...

Study: Stroke victims may retain continuous motion ability

... on the page without stopping. Stroke victims were unable to keep time in the first two tasks, but could draw uninterrupted circles in rhythm without difficulty. "The key seems to be whether or not your body has to stop and produce a sudden change in direction," Zelaznik said. "A damaged cerebellum appears...

Essential gene for male fertility found

...rt disease but we did find that our male mice were unable to breed. When we investigated further, we found t...ne was removed from the mice, the chromosomes were unable to identify their correct partners and, instead, paired with non-corresponding chromosomes. Defects ...

Body clocks keep migrating monarchs on course, Science study shows

...eppert. "When the clock is disrupted, monarchs are unable to orient toward Mexico. Without proper navigation, their migration to the south wouldn't occur, and that generation of butterflies would not survive." Reppert chose monarchs for the study in part because they don't learn their route, as honeybees fo...

Automated imaging of brain tissue, high-quality glimpses inside arteries

...cannot take good images inside an artery, so it is unable to provide a detailed map or mechanical profile of the plaque that causes the blockage. The new system, incorporating several important technical advances in optical coherence tomography (OCT), employs all-fiber micro-optics (enabling tiny, high-qua...

Hopkins scientists uncover role of Fanconi's Anemia genes in pancreatic cancer

...ells are missing this repair mechanism making them unable to fix the breaks caused by the drugs, so the cancer cells should die, Kern says. Both drugs are currently used in pancreatic cancer therapy, and though some remissions have been reported, the drugs have been largely ineffective. Kern suspects it'...

Gene mutation in some uterine tumors may signal that cancer runs in family

...icates that the cancer occurred because cells were unable to repair damaged DNA. Normally, these repairs are carried out by so-called mismatch repair enzymes. Mutations in the genes for these enzymes lead to ineffective DNA repair and cancer. MSH6 is involved in mismatch repair, as are the genes known as M...

UI researchers discover new cause of muscular dystrophies

...and discovered that without dysferlin muscles were unable to heal themselves. The UI team genetically engin... in real time. Under normal conditions, the dye is unable to penetrate muscle membrane. However, if the membrane is broken the dye can enter the muscle fiber ...

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