First potentially clinically useful independent marker for lung cancer identified
...es that are sometimes made when cells divide: they remove the faulty bit of DNA and insert a corrected copy. This repair stops errors being transmitted through generations of daughter cells. Without the repair the daughter cells would gather further mistakes and the damage would multiply, resulting in a gro...Blood proteins tied to inflammation
...ty, stroke, carotid endarterectomy (a procedure to remove plaque from the neck artery), peripheral vascularization (a type of angioplasty used to dilate narrowed arteries in the legs), or amputation. The risk of heart disease increased with high C-reactive protein levels and low albumin levels, even after ...Sertoli cell transfer restores sperm production in infertile mice
...ted the mice's testes with busulfan and cadmium to remove any defective germ cells and Sertoli cells. The seminiferous tubules remained, likely providing the structural support needed to completely reconstitute spermatogenesis from donor cells. The Brinster group's technique for transplanting Sertoli cells...New nanoparticle coating mimics dolphin skin
...the tin-based paint by 2003 and aims to completely remove it from all ships by 2008 -- a timetable that has increased demand for a non-toxic replacement. Wooley, an organic polymer chemist by trade, became aware of the problem, through the Office of Naval Research (ONR) which for years supported research i...Food for thought: What are the likely side effects of fertilizing phytoplankton with iron?
...rtilization of oceanic phytoplankton as a means to remove excess carbon dioxide from the atmosphere could result in significant, unwanted side effects on the climate and the atmospheric chemical composition (Science, 20 September, p. 1993, 2002). It is well established that atmospheric carbon dioxide (CO2) ...Geneticists tell ostrich farmers the secrets of sex
...A extracted from feathers. This new technique will remove the need for invasive procedures currently in use to sex-type ostriches and allow breeders to discover the sex of their chicks much earlier. Details of this new technique can now be read by all interested parties because of the decision of the author...Study backs theory that accumulating mutations of 'quiet' genes foster aging
...f genes can be accumulating. If geneticists try to remove bad late-in-life effects of a gene that has a positive role early in life, then its overall function could be negatively altered in future generations, Hughes said. Manipulating genes with no early life benefits to negate their deleterious late life...Genome of potential bioremediation agent sequenced
...t has great potential as a bioremediation agent to remove toxic metals from the environment. The genome sequ...tion research because of its unusual capacities to remove environmental pollutants under diverse conditions," said John F. Heidelberg, a TIGR assistant invest...Researchers create new strategy for removing arsenic from soil
... is usually lethal to plants. Arabidopsis can then remove arsenic from the soil and transport it to the plan...y in leaves. Thus, the new system allows plants to remove arsenic from the soil, concentrate it, and then send it to the leaves. This is where the second gene...Needle-free blood and tissue measurements
... are collecting data and developing equations that remove the influence of skin color and fat content on measurements," Soller said. "Our technique will take this human variability into account. Once we adjust for these variables, we can take measurements on the arm or leg or even sew sensors into clothes."...Yeast research targets drug resistance battle
...saw expected changes to the molecular pumps (which remove a variety of drugs from cells), they also noted changes in hundreds of genes. More surprisingly, they found the altered genes displayed three distinct patterns - a finding replicated in patient samples. Recognizing these patterns will make it easier ...Researchers identify first genomic blueprint of cancer preventive compound found in broccoli
...occoli and other vegetables, to prevent cancer and remove toxins from cells. The discovery was made using a "gene chip" that allows researchers to monitor the complex interactions of thousands of proteins on a whole genome rather than one at time. The study is published in the September 15, 2002 issue of th...Garlic may protect the heart from damage after surgery
...ally fatal to patients undergoing heart surgery to remove clots or repair heart defects. Antioxidants, which can "mop up" free radicals before they do any harm, have been shown to reduce the severity of damage to the heart. However, the therapeutic use of antioxidants is limited by their toxicity. In light ...AAAS at the BA: Whale food, winners and losers in Antarctica and solar insights
... hub of the food web in the Southern Ocean. If you remove krill, the whole ecosystem will collapse," Brierley said. The first direct comparisons of krill population densities in open-water and under-ice environments were described in the 8 March 2002 issue of Science by Brierley and colleagues. Krill swar...New possibilities for deadly childhood brain cancer
...mples taken from seven patients who had surgery to remove medulloblastomas. In laboratory dishes, cyclopamine killed up to 99.9 percent of the cancer cells rather than just halting their growth, says James Olson, M.D., Ph.D., of the Fred Hutchinson Cancer Research Center. The chemical didn't affect single s...Plant compound kills brain tumor cells
...a cells from patients who had undergone surgery to remove the tumors. "When we treated dispersed cells from these tumors with cyclopamine, they died very quickly, and in fact, the drug appeared to be killing the cells faster than any drug Jim Olson and his colleagues had yet tested," said Beachy. Also promi...Combining Rb2 gene with radiation therapy quickens tumor cell death, Temple researchers find
...e is in a silent state," says Giordano. "When you remove the tetracycline, you enhance the Rb2 gene expression and the tumor cells die.' As part of the study, the researchers treated the tumor cells in which they had transplanted the Rb2 gene with gamma radiation. "When we looked at the possible synergist...New antibacterial coating may prolong contact lens life
...extended wear contact lenses require the wearer to remove them at least weekly for cleaning and disinfection. The U.S. Food and Drug Administration (FDA) so far has approved only two brands that can be left in for up to 30 days. The selenium coating would let people keep their contacts in for at least two ...Marine biodiversity essential to preserving species
... to isolate some reefs from others and selectively remove certain fish, their competitors or predators to observe the effect. "We found that the removal of any one species can have ramifications for the whole ecosystem," Hixon said. "Without predation, a fish species can increase its population to an unsup...Study identifies hypertension patients who can benefit from the little used diuretic amiloride
...entive disorder causing their hypertension, and to remove any uncertainty for individual patients. The authors of "Hyperactive ENaC Identifies Hypertensive Individuals Amenable to Amiloride Therapy," are Artensie R. Carter, Zhen Hong Zhou, David A. Calhoun, and James K. Bubien, all from the University of ...