Dangerous Chemical Combination Presents Possible Scenario For Gulf War Illnesses
...lize DEET and permethrin. "Pyridostigmine bromide actually pumps more of the other chemicalsto the brain," said Abou-Donia. "While PB itself cannot crossthe blood-brain barrier, it magnifies the effects of the other two chemicalsby tying up the available BuChE." Abou-Donia said an additional genetic risk fa...New 'Twist' In Proteins Offers Possible Route To Improved Antibiotics
...activesite," which is the part of the protein that actually catalyzes thechemical reaction. Any successful antibiotic must plug into the active site,blocking its action, to kill the bacteria. At Duke, Raetz and his colleagues are planning experiments in which theyselectively alter various amino acids ......vice known as a mass spectrometer. This device can actually measure quantities of U-238, U-234 and Th-230 atom by atom, instead of waiting for them to decay and measuring their radiation. Previously, even a mass spectrometer was not capable of counting the extremely small amount of U-234 and Th-230 found in ...Rosemary May Have Anti-Cancer Properties
...t suggests that people who eat high-fat diets will actually get themost benefit from rosemary," Milner says. "For typical Americans,who eat more fat than they should, rosemary may be particularly important." However, the type of fat consumed was important: Diets high in saturatedfats seemed to block the prot...Duke Researchers Find Second Gene Linked To Blood Vessel Disorder
... cells, it stimulatesgrowth, while in others it is actually a growth inhibitor. For example,TGF-_ stimulates skin cells to divide, making TGF-_ an excellent wound-healer. In earlier research, reported in the December 1994 issue of Nature Genetics,Marchuk identified the first gene linked to HHT. This gene, c......a misplaced reputation in human sexual behavior is actually used for a sexual purpose by insects?" said Eisner. "The male Neopyrochroa beetle is borrowing a defensive agent from another insect and is using it to buy access to the female -- then rewarding the female's favor by endowing her and their offsprin...Nutrition Study Reshapes Strategies For Athletes
... program that by doingfluid replacement, they will actually do better in their performance," saidHoutkooper. "It's not intuitive for them to keep drinking. Athletes candrink enough fluids to satisfy their thirst, but will still be dehydrated.We are really working with them on having a plan for drinking small ...Bark Beetle Infestation Spurs Multifaceted Study
...'s not, but it is second growth forest." That is actually part of the problem, most of the forests were last cut140 years ago to supply fuel and timbers for mining the Comstock Lode nearVirginia City, Nev. In the early 1900s, fire eradication on federal landbecame mandatory and most state and local governme...Salvage Gene Is At The Root Of Many Mutations
..."REV1, in its efforts to cope with DNA damage, can actually produce mutations," Nelson says. "When exposed to DNA-damaging agents, yeast without the REV1 enzyme develop less than one percent as many mutations as yeast with theenzyme." In the Nature paper, the Rochester researchers show that REV1 leapfr...Duke Ecologist Says Logging Is Creating 'Mahogany Deserts'
... Quintana Roo, Snook found that mahogany seeds can actually successfullygerminate and begin growing in the shade. It's only after they run out oftheir own stored food -- perhaps a year after germination begins -- thatthe tiny shoots need open sunlight to make food through the photosyntheticprocess. At a stud...PET Project Helps Reduce Pollution Threat From Heavy Metals
... Theconcrete also neutralizes acidic rainwater and actually raisesthe pH to the level where the sand layer works best. Sansalone has spent the last year testing a laboratory versionof the PET system. Experimental results reported at the SeventhInternational Conference on Urban Stormwater Drainage in Germanyth...Discovery Of Cell Sites May Shed Light On How Bodily Systems Interact
...a. But the possibilitythat the pituitary gland may actually receive the message of illness anddirectly issue response orders, offers a new window for research, Kelleysaid. The mission now, he added, is to determine what the receptors actuallydo. "We've discovered what physiologists learned 100 years ago," Ke...Researchers Identify A New Cellular Structure: The "Dumposome"
...nner edges," Allis says. "But these 'Cheerios' are actually dumposomes that are breaking down DNAwithin their middles." "Other researchers had thought that the structure was just a developing nucleolus, which is the part of the nucleusthat is a workbench for building ribosomes," adds James Smothers, a gr...Cholesterol Anchor Helps Signaling Proteins Direct Development
...ol, often villified for its role in heart disease, actually wears a white hat during the earliest stages of life. In this week's Science, Johns Hopkins and Howard Hughes Medical Institute scientists report that hedgehog proteins, an unusual group of proteins that help shape many features of a developing embr...Researchers Find Genetic Clues To Intestinal Disease
...e affecting 400,000 people in the United States is actually a variety of related disorders that can be inherit...inherited the disease.This suggests the disease is actually several different disorders, each one of which is presumably inherited separately, says Bayless. "T...Antarctic Science Season Gears Up With Searches for Meteorites, Neutrinos, and New Life Forms
...he sea. How permanent is this ice sheet, which is actually anchored below sea level? As part of a major, mul...of Case Western Reserve University. Antarctica is actually unrivaled in its abundance of meteorites. Since 1976, the program has found more than 7800 specimen...Cornell Scientists Find Way To Boost Rice Crop Yield -- They'll Walk On The Wild Side
...ture and the Rockefeller Foundation. "Land mass is actually shrinking in Asia and as a society we've increased rice yields per acre about as much as we could. We can't increase the land, so we have to do something," said McCouch. "Fertilization is no longer an effective way to boost yield -- it's plateaued....Plants Have Future As Environmental Clean-Up Agents
...ecause oxygen is present. "In some cases, we have actually seen 10 pounds per acre a dayremoved," Davis said. "It really depends on what's present there." In either case, using plant-based bioremediation is cheaper thenmore traditional methods of clean-up such as pumping and treating orexcavation, according...Bacterial Protein Structure Hints At Mechanism Of A Class Of Premature Aging Diseases
... than simply actingas a road block to replication, actually interacts with the helicase protein. "That's... specific way,but the Duke research shows that RTP actually interacts with the helicaseon a molecular level. "There's a flexible region on the helicase thatthe ...Siblicide In Nature: Study Of Galapagos Seabird Finds Death Can Ensure Species Survival
...of the family conflict. "Masked booby parents are actually facilitating and encouraging this early siblicide setting up a contest between the older and younger chick that only one is going to survive and stacking the odds in favor of their eldest," Anderson said. "In masked boobies, maximizingreproductive s...