Scientists are reporting development of a new approach for producing large quantities of human-derived gelatin that could become a substitute for some of the 300,000 tons of animal-based gelatin produced annually for gelatin-type desserts, marshmallows, candy and innumerable other products. Their study appears in ACS's Journal of Agriculture and Food Chemistry.
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A major new review of scientific knowledge on kava — a plant used to make dietary supplements and a trendy drink with calming effects — has left unsolved the mystery of why Pacific Island people can consume it safely, while people in the United States, Europe, and other Western cultures sometimes experience toxic effects. The article appears in ACS' journal Chemical Research in Toxicology.
Concepción/Halle (Saale)/Prague/Sydney • Invasive plant species in Chile pose a higher threat to its neighbour, Argentina, than vice versa. This was concluded by scientists from the University of Concepción in Chile and the Helmholtz Centre for Environmental Research (UFZ) after analysing the flora of both countries. In particular, 22 non-native species which occur in Chile on connecting roads leading to Argentina present a high risk according to the researchers, writing in the journal Biological Invasions.
Lung diseases in the Middle East range from the centuries-old pulmonary tuberculosis (TB) to modern manifestations caused by chemical warfare. A new paper now available in Respirology, a journal of the Asian Pacific Society of Respirology, provides pulmonologists and patients with the first comprehensive review of respiratory illnesses specific to the Persian Gulf region, and the challenges in treating them. This unique review is the first of its kind in this topic and will serve as an important landmark reference article.
Montreal, July 13, 2011 — Raising taxes on cigarettes, a public health measure used by governments to encourage people to quit, doesn't motivate all smokers to stop the deadly habit.
A study on the long-term impact of taxing cigarettes, led by two Concordia University economists and published in the International Journal of Environmental Research and Public Health, found higher taxes do prompt low-and middle-income earners to quit.
Yet price increases don't persuade wealthier smokers or those aged 25 to 44 to butt out.
PHILADELPHIA — Humans produce billions of clot-forming platelets every day, but there are times when there aren't enough of them, such as with certain diseases or during invasive surgery. Now, University of Pennsylvania researchers have demonstrated that a single drug can induce bone marrow cells called megakaryocytes to quadruple the number of platelets they produce.
Localised badger culling in response to bovine tuberculosis (TB) outbreaks increases the risk of infection in nearby herds, according to a new analysis.
The study, by researchers at the Medical Research Council Centre for Outbreak Analysis and Modelling at Imperial College London, is published today in the Royal Society journal Biology Letters.
The findings come as the Government prepares to decide whether to license farmers to organise the widespread culling of badgers over areas of 150 square kilometres or more in western England.
Researchers from the Polytechnic University of Catalonia (UPC) have developed a method for evaluating the vulnerability of coastal regions to the impact of storms. The method, which has been applied on the Catalan coastline, shows that one-third of the region's coasts have a high rate of vulnerability to flooding, while 20% are at risk of erosion.
Farmers who spray insecticides against aphids as a preventative measure only achieve a short-term effect with this method. In the long term, their fields will end up with even more aphids than untreated fields. This has been reported by researchers at the Biocenter of the University of Würzburg in the scientific journal PLoS One.
Exotic marine species, including giant seaweeds, are spreading fast, with harmful effects on native species, and are increasingly affecting the biodiversity of the Mediterranean seabed. Some native species, such as sea urchins (Paracentrotus lividus), can fight off this invasion, but only during its early stages, or when seaweed densities are very low.
New York, NY, July 12, 2011 – A study published in the July issue of The American Journal of Medicine, reports that among hypertensive patients with coronary artery disease, chronic self-reported use of non-steroidal anti-inflammatory drugs (NSAIDs) was associated with an increased risk of adverse events during long-term follow-up. Long-term NSAIDs use is common for treatment of chronic pain.
PITTSBURGH, July 13, 2011 – Today, researchers from two major HIV prevention trials announced favorable results of an approach called oral pre-exposure prophylaxis, or PrEP. One of these trials, the Partners PrEP Study, has provided the strongest evidence yet of PrEP's effectiveness.
In a result that will fundamentally change approaches to HIV prevention in Africa, an international study has demonstrated that individuals at high risk for HIV infection who took a daily tablet containing an HIV medication – either the antiretroviral medication tenofovir or tenofovir in combination with emtricitabine – experienced significantly fewer HIV infections than those who received a placebo pill. These findings are clear evidence that this new HIV prevention strategy, called pre-exposure prophylaxis (or PrEP), substantially reduces HIV infection risk.
PASADENA, Calif.—The power output of wind farms can be increased by an order of magnitude—at least tenfold—simply by optimizing the placement of turbines on a given plot of land, say researchers at the California Institute of Technology (Caltech) who have been conducting a unique field study at an experimental two-acre wind farm in northern Los Angeles County.
One of the smallest ever cave-dwelling ground beetles (Carabidae), has recently been discovered in two caves in the Rhodopi Mountains, Bulgaria, and described under the name Paralovricia beroni. The beetle is completely blind and is only 1.8-2.2 mm long. The study was published in the open access journal ZooKeys.