New biosensor rapidly detects deadly foodborne pathogen
...ly bacteria Listeria monocytogenes in less than 24 hours at concentrations as low as 1,000 cells per milliliter of fluid - an amount about the size of a pencil eraser. The sensor also is selective enough to recognize only the species monocytogenes. "The selectivity, sensitivity and rapidity of this sens...Brain circuit may permit scientists to eavesdrop on memory formation
...e researchers created the TA lesions in animals 24 hours after they had learned the position of the platform. These animals still retained short-term memory; but four weeks later they lost that memory as well. Since the lesion was made after learning, this experiment suggested that the animals had problems...New genetic tools provide clues to the effects of exercise and diet on obesity, diabetes
...ith aerobic training and loss with de-training (96 hours to two weeks) in 10 male and 10 female STRRIDE subjects. "We propose that training coordinately increases the levels of aspartate aminotransferase 1, lactate dehydrogenase B and pyruvate dehydrogenase alpha 1 subunit, increasing glucose metab...HHS awards $232 million in biodefense contracts for vaccine development
...l unless antibiotic treatment is started within 24 hours of infection. NIAID also modified an existing contract with DynPort Vaccine Company LLC of Frederick, Md., to include the manufacture of a pilot batch of live, attenuated tularemia vaccine. The three-year, $4.5 million contract modification als...New technique targets pesticide-resistant insects
... mechanisms are deactivated and then, four to five hours later, the insect is exposed to the pesticide. Dr Gunning said the technology had been found to be effective in some of the world's resistance 'hot spots'. "In NSW and Queensland (Australia), we conducted trials against the major pest of cotton, the ...Arctic mystery no longer: Dinosaurs walked Canada's great north
...ils. He says the work isn't easy. Artic digs meant hours of walking with heavy equipment, while African digs came with pounding sun and drinking bad water. Yet it's all worth it. "The fact that I may bring new perspectives on ancient life is what keeps me going," he says. Larsson, who teaches biology and i...Identifying genes that contribute to a low level of response to alcohol
... you some time,' because we have spent hundreds of hours reviewing the literature to try to find genes that might be contributing to the low response to alcohol in organisms, including humans." "We are at the very beginning of 'gene finding' for alcohol response," said Goldman, "when it is important to u...Purdue chemists give an old laboratory 'bloodhound' a sharper nose
...net-sized machines that require samples to undergo hours of intensive preparation before testing, Cooks' team has found a way to test untreated samples right where they are found with a mass spectrometer that can fit in a backpack - all by creating a wand that can gather the samples from the environment qu...Other highlights in the October 20 JNCI
...s administered the enzyme to seven patients 3 to 9 hours after an accidental overdose. Symptoms from the methotrexate overdose included seizures and coma. After administration of the enzyme, concentrations of methotrexate in the patients' cerebrospinal fluid decreased rapidly by 98%. All patients recovered...Early life stress harms mental function and immune system in later years
...spring were sacrificed at either zero, one, or two hours after lipopolysaccharide injection, and the researchers measured the expression of nitric oxide synthase, a gene critical for production of nitric oxide in the nervous system. About six animals were used in each of six groups. Control animal...Bug's-eye-view of urinary tract reveals E.coli infection genes
...urine from each of the 40 mice in the study. Eight hours of mouse massage per day produced about 15 milliliters (one-half ounce) of urine, which Snyder processed immediately to stabilize the RNA before it could degrade. After 10 days, Snyder processed the collected RNA to create DNA copies of the RNA mole...Study: Inadequate physical activity worsens as teenagers become adults
.... Just under half of teens engaged in more than 14 hours of screen time per week. Of those who had the recommended 14 or fewer hours, 17 percent increased their screen time as adults." Other findings, based on estimates, were that: An average of more than 12 million adolescents did not achieve fi...Mail-order drugs exposed to extreme heat become less effective
...ules were heated in their original packaging for 4 hours at 150F, similar to the temperature found in the inside of an Arizona mailbox. Capsules were removed from their packaging and dispensed into a filter tube using the inhalation technique and device provided by the manufacturer. Weights of the filter...Common household fragrances may be harming aquatic wildlife, study finds
...ragrance away, there's a long-term effect up to 48 hours after removal." These results indicate that even short-term events, such as chemical spills and storm-water runoffs, could have long-term effects, Luckenbach added. Human health The study also has implications for human health. "People have these s...Diabetic damage to eyes, heart, nerves, kidneys may be explained by controversial theory
...hyperglycemic by infusing glucose into it for five hours or so, you'll see some of the same changes in the blood vessels that you see very early on in diabetics," Williamson notes. "However, we showed that if you infuse pyruvate at the same time you infuse the glucose, you completely block those changes." ...First human trial of bioartificial kidney shows promise for acute renal failure
...tive complications. Each patient received up to 24 hours of treatment with the renal tubule assist device. Several patients were taken off the treatment earlier because of reactions such as hypoglycemia or low platelet counts, or because of complications related to their other medical conditions. The bioar...Southeastern Center for Emerging Biologic Threats (SECEBT) presents infectious disease conference
... accredited by the ACCME to provide a maximum of 7 hours in Category 1 credit toward the AMA PRA for this activity. To register online, visit www.secenterbiothreats.org . For questions or more conference information, call 404-712-2366, or email lorejud@emory.edu . Food & Waterborne Infectious Disease Th...The blotchier the face, the better the wasp
...other. It took the wasps between 5 minutes and two hours to sort out their differences. By analyzing videotapes of 61 wasp fights, the researchers found that the winning wasps generally had more broken-up, spotty or wavy black patterns on their faces' yellow center. But if the subordinate, or beta, wasp al...Old riverbed keeps chemicals from entering Ohio River
...wed that the water changed direction on a scale of hours instead of days. Larry Krissek, associate professor of geological sciences at Ohio State and Svitanas advisor, said he was surprised to find that the seesaw shifted so quickly in response to a rainfall or a rise in water level in the river. ...Automated scans let scientists track drugs' broad effects on cells
...obes for different proteins and DNA. After 20 hours of cell growth, the researchers used automated microscopy to collect some half a million images of the treated cells, followed by approximately 5 billion individual measurements of the size, shape, and quantity of different proteins, DNA, and organel...