Effects of aging in stem cells
... mechanisms of aging, and why so many of us face a high risk of cancer in our later years. ...Pediatric ritalin use may affect developing brain, new study suggests
... olds." The relative doses used were at the very high end of what a human child might be prescribed, Dr. Milner notes. Also, the rats were injected with the drug, rather than fed Ritalin orally, because this method allowed the dose to be metabolized in a way that more closely mimicked its metabolism in ...'Preconditioning' helps protect brain's blood vessels from stroke
...her says. "There's a large population out there at high risk for stroke, and we believe this approach could really help them. It might even help minimize brain tissue damage should any stroke occur."...Alternative farming cleans up water
...es may help to protect the environment by reducing high nitrate levels in surface and ground water caused ...ubsurface drainage is used to promote crop growth, high levels of nitrates are transported to downstream waters. Nitrate contamination of water can contribu...New clue into how diet and exercise enhance longevity
...o appreciate that obesity, insulin resistance, and high blood insulin levels are connected to Alzheimers disease, Huntingtons disease, and dementias in general, he said. It might be that, in people who are genetically predisposed to these diseases, too much insulin overactivates Irs2 in the brain and acce......ic material within that solution is actually quite high meaning Quake and his colleagues can easily amplify and analyze the genome of an individual cell, eliminating the need to persuade the organism to multiply in a laboratory culture. The chip offers the potential to discover untold new species of micr...JCI table of contents: July 19, 2007
..., diabetes, abnormal insulin-producing beta cells, high cholesterol, and excess fat deposition in the abdomen and liver. The results show that insulin resistance and resultant effects, owing to a specific defect in muscle PKC-lambda, is sufficient to cause abdominal obesity and other abnormalities charact...Genetic diversity in honeybee colonies boosts productivity
... each honeybee queen mates with an extraordinarily high number of males," said Heather R. Mattila, a Cornell postdoctoral fellow in neurobiology and behavior and co-author of the article with Thomas D. Seeley, Cornell professor of neurobiology and behavior. In every honeybee species, say the researchers, ...Charting ever-changing genomes
... plants are under constant threat from heat, cold, high acidity or salinity, or pathogens such as viruses ...ds of DNA. The high-resolution approach revealed a high number of specific changes in genes belonging to the so-called F-box superfamily, whose members play...Bird sized airplane to fly like a swift
...flying efficiently and highly maneuverable at very high and very low speeds, just like the swift.The students found out that using only four feathers, much less than the bird uses, already provides the wing with sufficient morphing capacity; this feature makes actual production of the design feasible. Ste...Exercise, exercise, rest, repeat -- how a break can help your workout
...sult of lower plasma glucose. This combination of high epinephrine and low insulin concentration may have...use the free fatty acids concentration was already high before the recovery period. Conclusions The American College of Sports Medicine recommends mod...Purdue-IU researchers explore new method for early disease diagnosis
...ten overlap. In particular, metabolites present in high concentrations overlap those present in low concentrations. Raftery and his team enhanced the visibility of a certain type of metabolites, amino acids, by chemically tagging the molecules of interest so that they are more easily visible. "We adde...Synthetic adhesive mimics sticking powers of gecko and mussel
...ecko) and performs extremely well underwater, with high adhesion strength (like a mussel). The material pe...L-dihydroxyphenylalanine (DOPA), which is found in high concentration in the glue proteins of mussels. Messersmith and Lee imitated a geckos foot by nanof...UK scientists lift lid on genetics of coronary artery disease
... a healthy lifestyle, not smoking and if they have high blood pressure or raised cholesterol levels, to have these treated." Although the researchers know that some of the variants implicated are involved in cell growth and cell division, they are now working to understand exactly how this leads to hear...CRESIB coordinates an international consortium to fight malaria caused by Plasmodium vivax
...s of malaria cases every year, it also generates a high social and economic cost for endemic countries. It is estimated that about 2,600 million people live in risk zones for P. vivax : central and south-America, Asia, Middle East and occidental Pacific. Clinical and pathogen presentation of P. vivax i...Sequencing method yields fuller picture
...ting sequencing data. Kims method exploited the high rate of genetic mutations in the organism. Other organisms with high genetic variability, such as certain fish, also may be suitable. Because the human genome has a r...Ability to listen to 2 things at once is largely inherited, says twin study
...he ability to understand the filtered words showed high correlation among all twins, indicating that variation in that skill is primarily due to differences in environment. Scientists believe that problems with dichotic listening ability are often due to a lesion or disconnect between the brain's right...Bull's-eye -- Programs targeting math, science teacher shortage may get boost
...ation. After 10 years teaching math in middle and high school, she joined UH 15 years ago. Williams r...be assigned a mentor in a middle school and one in high school the following semester. In the fourth semester, students will choose the grade level for the...Tips from the Journals of the American Society for Microbiology
...nfection, however increasing resistance as well as high treatment costs and recurrence of infection emphasize the need for an effective, long-lasting vaccine. In the study mice were immunized in four groups: orally alone, intramuscularly alone, orally followed by intramuscularly, and intramuscularly fo...... heart attack risk factors: prediabetes, diabetes, high blood pressure, and changes in cholesterol. But ...fter providing the study's subjects with two meals high in carbohydrates, Shulman and his colleagues turned to magnetic resonance spectroscopy to measure th...