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Tag: "limited" at biology news

FDA sees nanotech challenges in every product category it regulates

...ed without undue risk,” Dr. Maynard said. “FDA is limited in its oversight of nanotechnology by the dearth of available risk research data on nanomaterials. Because the agency is resource-starved, there are scant funds for FDA to conduct its own regulatory-relevant risk research. It is critical that FDA—and...

Common cancer gene sends death order to tiny killer

...ed or missing p53, they found that those cells had limited or zero miR-34a. "With no p53 gene or miR-34a to stem tumor development, there's no brake in pancreatic cells and uncontrolled growth leads to cancer," says Anirban Maitra, M.B.B.S., associate professor of pathology, oncology and genetic medicine...

Cellular message movement captured on video

... signaling and structural proteins, they have been limited to visualizing paxillin with dyes that stain cells rigidly attached to microscope slides. Those snapshots of fixed cells can’t reveal paxillin movement. “We can now see the dynamics of how paxillin and other proteins move inside the cell with new ...

Liver cancer patients with high serum levels of hepatitis B virus face poorer outcomes

...ors,” the authors report. Though the study was limited by a small patient cohort, and the fact that all had advanced disease, the authors concluded, “Based on the present findings, the incorporation of anti-viral therapies to reduce HBV viral load should be considered as part of management for HCC patien...

Discovery in orange cauliflower may lead to more nutritious crops

... the ability to synthesize beta-carotene, they are limited partially because they lack a "metabolic sink," or a place to store the compound. Developing staple crops with more vitamin A is important because vitamin A deficiency, common in developing countries, leads to compromised immune systems and is the ...

Snoring in children might be an allergic type disease

...ildhood,” he said. While the study findings are limited to children with rhinitis, Dr Marshall explained the observed associations with risk factors could apply to the general population where previous studies have also found strong associations between allergic or inflammatory diseases and snoring. “...

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

... meaning the current approach could have extremely limited use. A study he published in March 2000 in Nature Biotechnology showed the approach he uses works well, at least in blood vessels. “Now we want to try this on eggs and ovarian tissue and see if we can develop a robust technology and improve outcom...

Research shows cord blood comparable to matched bone marrow

...rvival rates, providing the degree of mismatch was limited and the number of cord blood cells available was sufficient. Furthermore, study participants who received matched cord blood had a 20 percent higher survival rate than matched bone marrow recipients, though the number of matched cord blood transplan...

Dual-imaging technique useful before -- and during -- brain surgery

...ations. For example, explains Leach, patients with limited vision may not demonstrate as much activity in the brain in areas linked to vision during functional MRI testing. “That doesn’t necessarily mean that there’s no function there—it may just be that functional MRI is not sensitive enough to detect i...

Researchers shed light on mechanism of action used by anti-cancer drug

... other targeted agents whose antitumor activity is limited by Mcl-1 expression,” Grant said. Several such targeted agents are currently undergoing clinical evaluation in patients with various malignancies....

Small, self-controlled planes combine plant pathology and engineering

...n the United States.” Schmale’s research is not limited to the study of Fusarium, however. He has expanded his interests to explore entire microbial populations in the atmosphere—a type of research he calls “aerogenomics.” “One of the species we collected with our autonomous UAVs appears to be a bacter...

454 sequencing identifies HIV drug resistance at early stage

...c resistance technology available to clinicians is limited to detecting resistance mutations that are present at levels of approximately 20% or greater in the circulating viral population in a patient. Thus, the current technology used in the clinic may miss many low-level resistant HIV strains which can gro...

University of Pittsburgh School of Medicine researchers develop 'off-the-shelf' vascular grafts

... to becoming obstructed. However, they are in very limited supply, as many patients require multiple grafts. Thus, there is an ongoing search for the ideal small-caliber arterial substitute for revascularization procedures. The University of Pittsburgh team, led by David A. Vorp, Ph.D., associate professo...

Potent possibilities for parasite attack

... lack of similarity to human genes, they present a limited repertoire of potential targets for drug and vacci...opment allowing researchers to optimise the use of limited resources." Leishmaniasis is one of the neglected diseases that desperately need new research, a...

Researchers demonstrate way to control tree height

...bioremediation of polluted soils or in very windy, limited soil moisture situations. From an environmental...ts should be possible in any tree species, but are limited by the lack of research into gene transfer methods for most ornamental and forest trees. However, us...

Fat fish put obesity on the hook

...diseases and health conditions, including, but not limited to: hypertension, dyslipidemia, type 2 diabetes, coronary heart disease, stroke, gallbladder disease, osteoarthritis, sleep apnea and respiratory problems, and some types of cancer. ...

Restricting hospital-based services during SARS outbreak had modest impact

...ffected patients during a future epidemic would be limited by continued high levels of hospital occupancy. Fo...ct and argues that it would be useful in only very limited circumstances....

Experts predict Tamiflu could halve the pandemic influenza death toll versus no intervention

... reality is that country stockpiles of Tamiflu are limited and are targeted at treatment only rather than tre...h are fully matched to the pandemic strain will be limited or non-existent. This is because vaccine production can only start once the specific pandemic virus ...

'Virtual autopsy' helps identify drowning as cause of death

...port the diagnosis of drowning include but are not limited to frothy fluid in the airways or lungs, hyperinfl...when other causes of death have been excluded by a limited autopsy or external examination of the body. In addition, MDCT virtual autopsy may be useful as a pr...

Focused ultrasound relieves fibroid symptoms in women

...have completed their families and have a single or limited number of fibroids," said co-author Clare M. Tempany, M.D., professor of radiology at Harvard Medical School and director of Clinical Focused Ultrasound at Brigham and Women’s Hospital. The researchers studied 160 women with symptomatic fibroids. ...

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