No Such Luck: Nitrogen From Air Pollution Unlikely to Moderate Global Warming
...an population rises unless we take direct steps to counter it."...High Levels of Vitamin C Prove Toxic to HIV
...bolism, and may lead to new therapeutic targets to counter the AIDS virus, he added. Vitamin C is essential to the human body and is necessary for normal function of the immune system. The researchers studied vitamin C uptake and its effects on AIDS-virus production inHIV-infected and healthy immune cells, a...Enzymes Targeted As Key To Understanding Drug Interactions
...t can be an array of pill bottles on your bathroom counter or breakfast table, perhaps augmenting your usual arsenal of over-the-counter supplements and pain and cold remedies. How is the patient -- or the health care professional -- to know when the potential exists for a serious, even life-threatening, in......abortion-inducing agent, to see if that drug could counter the effects of Vpr.They added Vpr to populations of cultured lymphocytes in the laboratory,documented its impact, and then added RU-486 to see if the results were alteredin any way. "When we added RU-486 to our cell cultures, it markedly reve...NIDR Supports Total Genome Studies Of Major Oral Pathogens
...s to species will assist in developing newdrugs to counter antibiotic resistance, or to select candidate proteins forvaccine development. Aa sequencing data will be made available during the course of the study. Thedata will be accessible through the Internet at <A HREF="http://www.genome.ou.edu">ht...Stress Lowers Sperm Count By Overwhelming Cells That Make Testosterone
...sterone, have higher levels of enzymeactivity that counter increased glucocorticoids and ensure that they remainfertile....Females' Siren Song Initiates Courtship Duets In African Frogs, Columbia Biologists Find
...apid series ofloud clicks that sound like a Geiger counter exposed to a lode of uranium. Itis among the rare instances in the animal kingdom where the female takes thefirst step. Conventional wisdom in biology is that males advertise for mates andfemales answer: peacocks display, peahens admire; co...Can The Economic Promise Of Drug Discovery Continue To Preserve The Suriname Forest?
...entives to reduce destruction of rainforests -- to counter the poverty thatcontributes to the loss of biodiversity, the researchers pointed out in theirprogress report. Loss of biodiversity through deforestation not only removes materialsthat could be used to create pharmaceuticals, but eliminates h...Measures To Prevent Accidental Child Poisoning
...resistant packaging should be used on all over the counter drugs) (Child resistant packaging should be legal requirement) (Manufacturer's reply) Three letters in this week's BMJ address the issue of accidental child poisoning. In response to two letters citing Tixylix cough mixture as a particular proble......#62;U.S. Food and Drug Administration (FDA) ." To counter the potential interference, manufacturers include filtersthat keep out most of these external signals. In addition, modernpacemakers also include a "noise" mode that temporarily shifts thedevices to a generic heartbeat pacing rate when they receive ...UB Studies Link Low Dietary Calcium, Vitamin C With Increased Risk Of Gum Disease
...s not strong to start with, it will not be able to counter noxious agents, such as bacteria and substances in cigarette smoke, which attack bone, teeth and gums." A similar risk of periodontal disease was found among persons with low dietary intakes of Vitamin C. That study showed that those with the l...Dark Honey Has More Illness-Fighting Agents Than Light Honey
...ces that slow the oxidation of other substances -- counter the toxic effects of free radicals, which can cause DNA damage that can lead to age-related problems such as arthritis, strokes and cancer. Free radicals are atoms or molecules that are usually reactive or unstable. In an article to be published in...Adaptation's Basis May Be A Mix Of Genetic Tweaks, Whoppers
...anges, and a few majormutations. The new idea runs counter to standard theory onevolutionary genetics, which holds that only the tiniest ofgenetic changes contribute to adaptation. The work is publishedin the August issue of Evolution , due out this month. Orr's is the first new theory on the genetic a...Antioxidant Action Of Vitamin E Significantly Reduces Heart Disease In Mice
...vitamin E given as an experimental intervention to counter thecorrosive process. The results showed that lesions were reduced from 31.7percent of the aortic arch surface area in the untreated mice to 19.3 percent inthe mice receiving vitamin E for 16 weeks, an improvement of approximately 40percent. ...Antioxidant Treatment Holds Promise For Combating Malnourishment
...mpair their antioxidantdefense system. We can help counter that by helping the bodyproduce GSH." Bray said she is looking for opportunities to test GSHtherapy on malnourished children in developing countries. Thesechildren would receive antioxidants orally in addition to awell-balanced diet. Bray said...Penicillin Gets A "Checkmate" Against Antibiotic-Resistant Bacteria
...ut, a critical part of thepenicillin molecule. To counter this, the typical response is to combine thepenicillin with a chemical substance that inhibits the action of the enzymes. After a while, the bacteria develop additional resistance to the new substanceand render the updated penicillin version ineffect......logy involved, the development of drugtherapies to counter the problem becomes possible. Indeed, candidate compoundsare already being appraised in the laboratory for their therapeutic potential. A report on the study appears in the December 4 issue of Science. The research team investigated ......d reverse the feeblenessassociated with old age or counter the muscle-wasting effects of musculardystrophies and related diseases. It also raises the possibility, however, thatthe technique could be used -- or abused -- for athletic or cosmeticenhancements. Results from the experimental study will be...At Night, Birds May Review The Songs They Learn During The Day
...he HVc," saysMargoliash. Margoliash's findings run counter to the motor theory, proposed by A.M.Lieberman in 1967. The motor theory states that incoming auditory signals(speech in humans, or songs in birds), are interpreted when the listenersubconsciously mimics the sounds they hear, so that regions associat......h studies have shown that this low-cost, over-the- counter drug helps prevent the blood clots that can trigger heart attacks and strokes.Aspirin, however, may have another benefit for people at high risk for heart attacks and stroke. Aspirin is an anti-inflammatory drug, and recent research suggests that th...