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PAHs in Medical News

Cancer Endangers Some Wildlife Species

...elieved that this cancer problem is due to high levels of polycyclic aromatic hydrocarbons (PAHs) in the waters where the whales live, the study said. pahs are a known human carcinogen. In addition, virus-induced cancers can affect reproduction in some wildlife species (such as genital tumors in Califo...

Wildlife faces cancer threat

...econd leading cause of death. One type of pollutant in these waterspolycyclic aromatic hydrocarbons (or PAHs)is a well-known carcinogen in humans, and pahs are suspected carcinogens for beluga whales as well. Fish in other industrialized waterways, including brown bullhead catfish and English sole, also e...

Prenatal Exposure to Traffic Pollution May Lead to Asthma

...ted as byproducts of incomplete combustion of carbon-containing fuels such as gasoline. PAH levels are high in heavy-traffic areas, and exposure to pahs has been linked to such diseases as cancer and childhood asthma. The findings, published in the Feb. 16 issue of the journal PLoS One , offer a po...

Closing coal-burning power plant in China and improved cognitive development in children

...he first cohort had varying exposure prenatally to pahs emitted by the coal-fired power plant. This exposure was recorded by monitoring the levels of pahs in air during the mothers' pregnancies and in meas...posure in cord blood-- specifically the levels of pahs bound to DNA, known as "PAH-DNA adducts". Among t...

A new way to look at lung cancer and tobacco carcinogens

...United States. Previous studies have shown how pahs damage DNA, with the emphasis on how pahs bind directly to DNA itself, leading to the mutati...ogy . This is a second, but indirect, way in which pahs can cause cancer. We also know that...

New findings on emerging contaminants

... heart defects in herring and pink salmon embryos. pahs from various sources, including oil spills and urb...ing the last six years, they tested the effects of pahs on zebrafish, which medical researchers have deter...yos hearts were severely malformed after absorbing pahs through their skin. What isnt good for them, is...

JCI table of contents: Nov. 21, 2007

...t each contain a single egg. Further analysis indicated that the effects of pahs on the number of follicles in female offspring were mediated through the ar...ngs for women of child-bearing age was demonstrated by the observation that pahs triggered similar molecular pathways in human ovarian tissue transplanted i...

Smoking Before, After Pregnancy Harms Daughters' Fertility

...icles available to produce eggs. "Mothers, mice in this case, exposed to pahs -- environmental pollutants found in cigarette smoke, car exhaust, smoke pr...er Dr. Andrea Jurisicova. Further analysis indicated that the effects of pahs on the number of follicles in female offspring were mediated through a rece...

MSU Research Strengthens Link Between Smoking, Pancreatic Cancer

...co products – polycyclic aromatic hydrocarbons, or pahs – interfere with communication between the body’s ... Until now, most scientists thought that specific pahs produced by burning tobacco mutated genes which, i...pancreatic cancer in 2007. Trosko noted that pahs are formed when any substance containing certain p...

Mother’s Diet During Pregnancy Could Prevent Cancer in Childre

...ials such as wood, coal, cooking oil or diesel fuel. Exposure of a fetus to pahs has been shown to cause DNA damage in newborns and is also associated with ...lso been shown that a significant portion of the total lifetime exposure to pahs and other toxins, including PCBs and dioxins, is transmitted to the fetus a...
PAHs in Biological News

UNH: Pavement sealcoat a source of toxins in stormwater runoff

...ered to be carcinogenic. Although small amounts of pahs are typically found in the waters around the New H... Watts, affiliate faculty member at the UNHSC. The pahs from the sealcoat attach to organic matter, such a...ithin the first year. Unlike other compounds, pahs do not break down easily and thus persist in the e...

USGS Science Picks

...ties, where coal-tar sealcoat is less commonly used, according to a USGS study recently published in the journal Environmental Science and Technology. pahs are an environmental concern because they are toxic to aquatic life and several are suspected carcinogens. The new study also shows that coal-tar seal...

Laser fluorescence could find life on Mars

...University and a co-author of the study. "Since pahs are found on meteorites, we would expect some of t...vine. They infused the peridotite granules with pahs at a level of 50 parts per million, which is what ...ams of the organic material and pinpoint different pahs by variations in their fluorescent response. The B...

Impacts of fossil fuels on fish and people

... after the Exxon Valdez spill of 1989. Certain pahs were recognized as carcinogenic more than a century ago, but a class of pahs with a different structure was ruled out as a carc... developing hearts of fish. This same class of pahs is found in emissions from the burning of gasoline...

American Chemical Society's weekly PressPac -- Jan. 9, 2008

... of the oil spill caused by the 2002 shipwreck of the Prestige, one of Europes largest oil spills. Gulls exposed to the oil showed twice the levels of pahs in their blood than unexposed birds, even though these levels were measured 17 months after the initial spill, the researchers say. The findings give ...

Breast-Cancer Risk Linked to Exposure to Traffic Emissions at Menarche, First Birth

...usal breast cancer. However, for postmenopausal women, higher exposure to pahs at the time of the first birth was associated with increased risk. Neither ...st cancer for the other time periods. Nie said these findings related to pahs need to be interpreted with caution, because they could be explained by oth...

Solution to Pollution: New Bacteria Eats Toxic Waste

...h genes in the sequences will be identified. The researchers will be able to understand the genetic material that allows these bacteria to degrade the pahs and survive in the soil. Such knowledge may help researchers better understand and utilize the organisms to destroy PAH contaminants in the environmen...
PAHs in Biological Technology

Cyclodextrin enhances room temperature phosphorescence

...ls. 5

A description of the experiments with pahs will serve to illustrate the technique of CD-RTP, and provide a basis for a...ong enough for analytical purposes.

The success of CD-RTP with pahs depends on the formation of a proposed three-component complex of CD, lumip...

The Analysis of Polycyclic Aromatic Hydrocarbons (PAHs) by LC/MS/MS Using an Atmospheric Pressure Photoionization Source

...phase chromatographic conditions. A total of 16 pahs were analysed including the determination of unkno...-phase atmospheric processes. Certain carcinogenic pahs may be carried by ultrafine particles in ambien...environmental monitoring. Currently, environmental pahs are most commonly analysed by HPLC or GC/EI-MS;...
PAHs in Biological Dictionary

Bioaugmentation

... Comamonas testosteroni was ... ... nitrogen source) and/or bioaugmentation (addition of Pseudomonas aeruginosa ... improved bioremedation of HMW pahs using biostimulation and/or Bioaugmentation . ... Bacteria are a skilled workforce in the task of decomposing waste in sewers, grease traps and se...
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