Tag: "toxic" at biology news
American Chemical Society's Weekly PressPac -- Aug. 8, 2007
...tists in North Dakota are reporting no significant toxic
effects from tests of silica nanoparticles. It is...r, the question of whether these nanomaterials are toxic
to living cells or organisms has not been fully answered, the researchers explain. The scientists ...
Beyond batteries: Storing power in a sheet of paper
...lus, because of the high paper content and lack of toxic
chemicals, its environmentally safe, Shaijumon said. Paper is also extremely biocompatible and these new hybrid battery/supercapcitors have potential as power supplies for devices implanted in the body. The team printed paper batteries without addin...
Pollution causes 40 percent of deaths worldwide, study finds
...In the United States alone about 3 million tons of toxic
chemicals are released into the environment -- contributing to cancer, birth defects, immune system defects and many other serious health problems. Soil is contaminated by many chemicals and pathogens, which are passed on to humans through direct...
What we can learn from the biggest extinction in the history of Earth
... levels of oxygen in the oceans and high levels of toxic
gases. Siberian Traps In 1991, scientists re... the Siberian Traps not only threw ash, debris and toxic
gases into the atmosphere but also may have heated the coal and released vast quantities of carbon d...
In limiting life span, study finds booming bacteria innocent
...olling bacteria, preventing them from growing to a toxic
level, then that energy isnt available to maintain tissues and organs. However, we found no effect on the animals longevity even when their bacteria are taken from one extreme to the other. Nevertheless, he added, the bacterial infestations seen in...
High-intensity ultrasound may launch attack on cancer, wherever it lurks
...mbranes, causing them to spill their contents. The toxic
spill then alerts the immune system to the cancer threat, leading to the production of tumor-fighting white blood cells. If the effect seen in mice holds true in human patients, such a treatment could be an important advance in many cancer therapie...
Pregnant mothers join search for causes of autism
...ciplinary research center dedicated to finding how toxic
chemicals affect child development, including autism. B-roll: Opportunities will be offered to photograph UC Davis M.I.N.D. Institute laboratories involved in using microarray technology to examine the gene expression profiles of study participant...
New mechanism links smoking to lung damage
...e non-junctional hemichannels opened. This allowed toxic
molecules found in the smoke to flow directly into the cell, and vital metabolites such as ATP and NAD, to leak out, leading, ultimately, to cell injury and death. Drugs that prevented hemichannels from opening protected the cells from similar expo...
Where broken DNA is repaired
BERKELEY, CA Ionizing radiation, toxic
chemicals, and other agents continually damage the body's DNA, threatening life and health: unrepaired DNA can lead to mutations, which in turn can lead to diseases like cancer. Intricate DNA repair mechanisms in the cells' nuclei are constantly work...
UF to lead research on life-threatening fungus
...g clinical decisions about using drugs that may be toxic
or using the wrong drugs in patients when we are not sure whether they have this deadly infection." Officials are hoping to collect samples from about 200 patients a yearfor the next seven years to better characterize the fungus and improvethe diag...
American Chemical Society's Weekly PressPac -- July 25, 2007
...il spills in tropical areas are significantly more toxic
to coral than the oil they are used to clean up. T...and dispersed oil droplets were significantly more toxic
to the coral than the crude oil itself, the scientists report. The dispersants caused significant ha...
Research shows NPD1 protects a key component of vision
...D1 synthesis. They demonstrate that the endogenous toxic
component (A2E) that accumulates in the retina during aging and in retinal degenerations, including those due to gene mutations, can be counteracted by NPD1. The LSUHSC research team conducted studies on the formation and action of NPD1 on a human t...
Report recommends off-site disposal of secondary waste
...rns are used to ensure that 99.9999 percent of the toxic
agents will be destroyed during regular operations. The time required to complete a trial burn, submit results, and obtain authorization for full operation can be very lengthy due to the time required to actually conduct the burn and the large amoun...
News tips from the Journal of Neuroscience
... also potentially serves to protect cells from the toxic
effects of monoamines. In fact, VMAT is a member of the toxin-extruding antiporter gene family with the interesting acronym TEXAN. Accordingly, Caudle et al. examined whether reduced VMAT2 leads to degeneration of dopamine neurons. The authors examin...
CTRC enrolls first patients in novel phase II study for sarcoma -- living virus destroys cancer cell
...s a living virus, not a chemotherapy drug, that is toxic
to cancer cells but not harmful to normal cells. ...me or how to treat my cancer. REOLYSIN was a less toxic
option for me. "We are delighted, but not surprised, with the rate of accrual at the CTRC Instit...
American Chemical Society's Weekly PressPac -- July 18, 2007
...obile brake linings, tires remain major sources of toxic
metals Fingerprinting with light shows promise fo...obile brake linings, tires remain major sources of toxic
metals Environmental Science & Technology Particles worn away from automobile brake linings an...
...these abnormalities were due to their ingestion of toxic
milk from their PPAR-deficient mothers: Either fos... released into the mothers milk. Ingestion of this toxic
milk sets off an inflammatory response in the skin of nursing pups, which ultimately disrupts the ha...
'Preconditioning' helps protect brain's blood vessels from stroke
...tion of blood vessels in the brain whenever a more toxic
event occurs." Normal mice given an inflammatory toxin called lipopolysaccharide (LPS) 24 hours before an induced stroke -- the preconditioning method used in this study -- had a 68 percent reduction in stroke intensity, the researchers found. P...
Probing biology's dark matter
...obes lurking within deep sea vents, ordinary dirt, toxic
sludge, or virtually any environment. To demonstrate the power of the new device, the scientists first used it to target a possible new phylum, of which one member is a rod-shaped bacterium that live between the gums and teeth of humans. The candid...
Decoding mushroom's secrets could combat carbon, find better biofuels and safer soils
...eral Agaricus species are able to hyper-accumulate toxic
metals in soils at a higher level than many other fungi. Understanding how the mushroom does this improves prospects of using such fungi for the bioremediation of contaminated soils. Agaricus bisporus is one of the most widely cultivated mushroom...
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