Tag: "dioxin" at biology news
Last Comment Sought On Agents Proposed For Report On Carcinogens; A Final ForData On Saccharin, And A Re-Review Of Dioxin Announced
...gister notice, the NTPsaid it is also re-reviewing dioxin
for procedural reasons. NTP said in one notice ...aid that the NTP Board subcommittee's re-review of dioxin
need notdelay its listing in the ninth Report on Carcinogens, which is planned for nextyear. Kennet...
Pollution, Food Stress Take Toll On Bald Eagles
...rocess. Although the millsignificantly reduced its dioxin
output about 10 years ago, the bald eagles havefailed to rebound. A 1995 study showed that three out of four nests in theclosure zone failed, compared to an almost 100 per cent success rate for nestsoutside the zone. "'Failed' means that ther...
New Research On Environmental Pollutants
...mouse foetuses Animals that weregiven low doses of dioxin
over a long period of time suffered spontaneousabo...Orange" is a weed-killer containing the most toxic dioxin
(TCDD) whichwas used in large amounts during the Vietnam War as a defoliant. Health Problems Of Ame...
Scientists Finger A Molecular Kingpin In Body's Response To Cigarettes
...same one that makes ussusceptible to the pollutant dioxin
-- as a vital link in thechemical cascade whereby ...primary culprits has beendifficult. Enter the dioxin
research group headed by Gasiewicz, aninternationally recognized expert on dioxin
Mixing Radiation, Minerals, Toxic Waste Could Be Cleanup Boon -- Or Kaboom
... ofdegrading some highly toxic pollutants, such as dioxin
or PCBs, in contaminatedsoil. The bad news is that 177 huge underground tanks on the Hanford NuclearReservation in eastern Washington, which hold 54 million gallons of high-levelradioactive and chemical waste, may face an increasing risk of rupture o...
Research zeroes in on killer molecule in dioxin toxicity
...kash and MitziNagarkatti have discovered a step in dioxin
toxicity that may enable them todevelop diagnostic...ed a protein molecule involved in suchkilling, and dioxin
treatment seems to activate the molecule, resulting in thekilling of the immune cells. The molecule,...
Chemistry to play major role in solving 21st century challenges
...siness practices dating at least to the 1970s when dioxin
spills and use of the defoliant Agent Orange frightened and concerned many people." Whether chemical companies will actually meet this challenge remains to be seen. If they succeed, Reisch remarks, "it will be the chemical industry's best opportun...
Sunlight, PCB exposure enhance skin cancer chances
...d chloracne (an acne-like eruption associated with dioxin
exposure), served as a sunscreen, at least during early stages of exposure to UV light, Cope said. Our results were complex, but it was clear that tumor growth was dependant on whether or not an animals skin was irradiated, Cope said. The only time ...
$3.2 million project to document dioxin levels in Houston ship channel
...aught in certain areas of Galveston Bay because of dioxin
contamination, there has never been such a compreh..." Rifai says the regulatory limits for acceptable dioxin
concentrations are extremely small, and until recently the technology did not exist to detect such m...
Sunlight converts common anti-bacterial agent to dioxin
...f dioxin, and this process may produce some of the dioxin
found in the environment, according to research at... Minnesota. The researchers said that although the dioxin
was a relatively benign form, treating wastewater with chlorine could possibly lead to the productio...
Dioxin-receptor network identified
A cell responds to pollutants - such as dioxin
- via intricate and complex biochemical pathways b... five discrete biochemical steps in the pathway of dioxin
signaling. Not only did they succeed in identifying potentially new genes involved in the signaling...
New research outlines public health consequences
...he twin towers. These included airborne particles, dioxin
and other related compounds, asbestos, which was used for fire insulation in the construction of the North Tower, aromatic hydrocarbons such as benzopyrene and benzoperylene, and lead and other trace elements. Analysis of the data revealed that fi...
Nature mimics industry
...nces like the CFCs (the ozone-damaging chemicals), dioxin
(found in the herbicide Agent Orange), PCBs (industrial fluids) and several pesticides. Their naturally occurring cousins, however, don't get the recognition they deserve, according to Dartmouth Chemistry Professor Gordon Gribble. Gribble has taken i...