American Chemical Society's Weekly PressPac -- Aug. 8, 2007
...operties of the lens. It also could be applied to certain other surfaces in order to discourage undesirable ...c and a human health threat. Researchers knew that certain soil bacteria could metabolize and change trinitrotoluene (TNT) into nontoxic compounds. But those n...Climate change isolates Rocky Mountain butterflies
... otheras we've shown the Parnassius is becoming in certain areas in the Canadian Rockiesthe local extinction rate of small populations will increase," he added....Newly created cancer stem cells could aid breast cancer research
CAMBRIDGE, Mass. (August 13, 2007) In some ways, certain tumors resemble bee colonies, says pathologist Tan Ince. Each cancer cell in the tumor plays a specific role, and just a fraction of the cells serve as queens, possessing the unique ability to maintain themselves in an unspecialized state and seed ne...Abnormal fat metabolism underlies heart problems in diabetic patients
...cs, we have identified the increased activation of certain lipid-digesting enzymes and the decrease of cardiolipin as central aspects of this disorder. We hope that these kinds of studies will enable physicians to diagnose diabetic cardiovascular disease sooner and treat it earlier."...Circadian clock controls plant growth hormone
...s, the plant becomes more responsive to auxin at a certain time of day. Postdoctoral researcher Michael Covington and Stacey Harmer, professor in the Section of Plant Biology at UC Davis, used microarray chips to look at thousands of genes from the laboratory plant Arabidopsis at the same time. About 10 pe...ESF EURYI award winner aims to stop cancer cells reading their own DNA
...mise, and she has been able to predict what effect certain antitumor drugs would have on the basis of her molecular insights, confirming her hypotheses in yeast cells. Indeed the work with antitumor drugs is, as far as I know, the first experiment in which single-molecule experiments have resulted in a predi...Smokeless tobacco more effective than cigarettes for delivering dangerous carcinogens into the body
...lly provides a more efficient means for delivering certain carcinogens into the body through the bloodstream, although cigarette smoke includes a host of carcinogenic products that arent a major factor in smokeless tobacco, Hecht said. The study participants included men and women aged 17 to 80 who had sou...Female gender provides an advantage in renal diseases
...ses to renal injury. Estrogen especially may exert certain cellular effects on the kidney because it can suppress the growth of scar tissue as well as affect various growth factors which impact the kidney. Research Update: Estrogen in Renal Disease Previous studies using animal models have used hormon...UCLA scientists produce functioning neurons from human embryonic stem cells
..., Sun said. If youre studying a disease found in a certain part of the brain, you should use a human embryonic stem cell line that produces the neurons from that region of the brain to get the most accurate results from your study. Huntingtons disease, for example, is a forebrain disease, so the neurons shou...American Chemical Society's Weekly PressPac -- Aug. 1, 2007
...ices consist of medications that are combined with certain chemical compounds that respond to light in ways that release precisely controlled amounts of the drug. Drug release begins when light falls on the compounds, and lasts only as long as the light continues to shine. The study reports successful labo...Computer graphics spills from milk to medicine
...has been used to compute the optical properties of certain paints, plastics, clouds, atmospheric phenomena and other media that can be described as spherical particles embedded in a non-absorbing medium. The theory, however, has not been used to render the vast class of participating media, until now. In the...Gene predicts better outcome as cortex normalizes in teens with ADHD
...ve found correlations between cortex thickness and certain measures of memory and intelligence. In 7-repeat carriers with ADHD, the attention-controlling areas thickened to normal by age 16 (see time-lapse image below). Gene variants of two other dopamine system components showed few such anatomic correla...Not all embryonic stem cell lines are created equal
...ferentiation, because it may make it easier to get certain types of tissue. On the other hand, it may also limit the ability of these ES cells to fully replicate those types of tissues. Sun said that her technique for differentiating ES cells into mature neurons is likely to have important future research ap...Genetic analysis finds greater threat in frog-killing fungus
... site to another. Some fungi produce spores during certain times of the year. If that is the case with this fungus, we could consider restricting public access to infected sites during those times." As the U.S. Fish and Wildlife Service considers listing the mountain yellow-legged frog as an endangered spe...Disabling a sensory organ prompts female mice to act like male mice
...gnals that elicit specific behavioral responses in certain animals, including mice. The researchers found that female mice whose vomeronasal organs were genetically disabled behaved like males in the throes of courtship, exhibiting behaviors such as mounting, pelvic thrusts, solicitation and the complex ul...Multicenter study nets new lung tumor-suppressor gene
...ed by intestinal growths and an increased risk for certain cancers. Non-inherited mutations of the gene have been found in some lung cancers. This suggested that LKB1 normally thwarts tumors from forming. Mutated versions may be unable to act as a brake on cancer. To find out, the investigators ran a serie...Identified mechanism in the malaria parasite to help it adapt to infected individuals
...evel, meaning that the parasite stops expressing a certain gene without changing the underlying genetic information, and that the mechanism is flexible, adaptable and easily reversible. This means that the parasite can re-express the proteins relatively easily when infecting another individual or silence the...Discredited Korean embryonic stem cells' true origins revealed
...strategies has its own applications, and there are certain types of research and certain fundamental questionsand major areas of therapythat can only be accomplished with these other types ...New strategy for treating allergic disorders
... lactis can be employed to induce tolerance toward certain substances. This innovative strategy can now be developed further for the treatment of allergic and auto-immune disorders. The rising incidence of these disorders calls for more effective treatments with fewer side effects. The biopharmaceutical comp...Marijuana component opens the door for virus that causes Kaposi's sarcoma
... that THC could have a protective effect against a certain form of invasive, drug-resistant lung cancer. To study the combined effect of THC and KSHV, the researchers examined a culture of human skin cells, which are susceptible to infection and could provide a model of Kaposis sarcoma. These culture cell...