University of Florida Researchers Develop Filter Coating That Traps Bacteria and Viruses
...ater canbe treated now with chlorine, the chemical does not eliminate toxinspresent in dead bacteria, and some bacteria are chlorine-resistant, Shah said. "The idea is, you could supply a plastic bottle with this filterbuilt-in," he said. The coating may also prove useful to the silicon...Study Suggests Weekly Hurricane And Rainfall Patterns Are Linked To East Coast Pollution
... rate of pollutiondrift. Though the study does not directly address causation, a comparablefluctuation in the levels of East Coast air pollution points to an obviousconnection. The fact that coastal hurricane intensity data taken from 1945 to1996 follow a similar pattern (rather than being stati...Hopkins Study Shows High Prevalence Of Domestic Violence
...incipal investigator of the study. "That estimate does not include thesignificant numbers of additional women who seek care at emergency departmentsfor indirect symptoms of abuse, such as emotional stress or chronic pain fromprevious injuries." Significantly higher rates of abuse were found among...Molecular Circuit Breaker Can Prevent Runaway Cell Growth
...concluded thatARF sends an alternative signal that does not rely upon DNA damage. However, theARF pathway can also act hand in hand with the DNA damage pathway in triggeringp53-induced cell suicide. According to both Sherr and Lowe, drugs designed toemulate ARF or stimulate ARF production might make cells...... in neuronal cells, and that deletion of Caspase-9 does notinterfere with embryonic development of other non-neuronal tissues," said Dr.Keisuke Kuida, Staff Investigator at Vertex and an author of the study. "Thissuggests that a therapeutic approach designed to interrupt the apoptotic pathwaytriggered by ......rombin responses in mouse platelets, but that PAR4 does contribute tothrombin signaling," said Coughlin. The discovery that PAR3 and PAR4 appear to act as a dual-receptor system in miceled the researchers to examine whether human platelets also contain PAR4. Thediscovery that they do suggests that, in ...A Common Microbe Could Help To Trigger Alzheimers
... C. pneumoniae's presence in the diseased brains does not mean that itcause Alzheimer's, the scientists stress. But they think the bacterium may atleast be a risk factor. Chlamydia bacteria do cause inflammation when theyattack other parts of the body. And the brains of people with Alzheimer's areinflam......e, or total setof genes, it wants to fix first and does it through transcription-coupledrepair," he said. Gowen, Leadon and the others exposed the altered cells to three insults- ionizing radiation, hydrogen peroxide and ultraviolet light -- known to injureDNA in different ways. They then compared......ite which is where the reaction takes place. It does so by two strategies: Firstly, it supplies an amino acid (an arginine) that participates directly in the reaction; its mutation to another amino acid destroys GAP activity. Secondly, it stabilizes the functionally most important amino aci...Astronomical Costs Of New Medical Technology
...have exceeded sustainable levels. If managed care does not control health care cost growth, then some other force will, Chernew said. He and the co-authors of the article discuss three paths policy makers may consider: 1. Managed care plans will increasingly ration care. "If technological progress cont...Alaska Natives Provide New Evidence Linking Common Infection To Heart Disease
...es." The researchers note that this study does not confirm that the bacteriaactually causes atherosclerosis, but it does provide more substantial evidenceon how the bacteria and the disease could be related. Th...Study Finds Evidence Linking The Brain's Cognitive Control Regions With Stress Control Regions
...ferent message -- 'this is dangerous.' The way it does thatis through overcoming the ongoing inhibition of the system." The delicate balance between stress inhibition and excitation is asurvival strategy built into animals through millions of years of evolution,allowing responses to be generated ...Penn Researchers Find Mutation In Prostate Cancer Gene
...ous prostatecancer studies. The question remains, does a mutated CYP3A4 directly causeprostate cancer? "That we're still unsure of, and furthertesting needs to be completed," Rebbeck explains. "This new information arms us with the knowledge of what can befurther investigated," says Malkowicz. "We'll c......ast or any other yeast. It is also superstable and does not need to be grown in special nutrients or unde...oducing more product." In addition, the yeast does not require expensive antibiotics to keep the cloned genes active, and the yeast produces very few ...University Of Cincinnati Geologists Analyzes Evolutionary Impact Of Mass Extinctions
...al change over geologic time. "The global pattern does not match any localized pattern," said Miller. "Theglobal diversity trend ismisleading for what it says about the rates of transition and perhaps even forwhat causes them." Miller's research is supported by NASA's Program on Exobiology.......e can modify to stimulate or reverse what exercise does naturally. Webelieve it is possible to design a drug which would have this effect." The study provides evidence that three proteins called calcineurin, NFAT(Nuclear Factor of Activated T cells) and MEF2 (Myocyte Enhancer Factor 2)participate in a pat...Commercial Fish: Eat Up, Despite Low Levels Of Mercury
...he children."If somebody who eats fish twice a day does not show effects frommercury exposure, it's unlikely that somebody who eats fish twicea week will be affected. And the fish they eat in the Seychellescontains the same amount of mercury as fish sold at supermarketsand eaten in the United States." ...Snake Venom Slows Tumor Growth
...tostatic rather than cytotoxic. In otherwords, CN does not kill the tumor cells, but instead puts them in a "suspendedstate of animation," which, he says, can be maintained for a long period oftime. This also has the advantage of eliminating the potential side effects ofcytotoxic (cell killing) drugs. ...Secrets Of The S.O.S Repair Service
...m in a test tube and revealed how the S.O.S. squad does its job. The scientists found that when damaged g...leading to cell death. But when the S.O.S. repair does kick in, it replaces damaged DNA with random genetic material. This material acts as a spacer, keepi...Study Pinpoints Rare Molecular 'Transitions' As Possible Cause Of Skin 'Photoaging'
...b approximately the samewavelengths of sunlight as does DNA in living skin, Simon said in an interview.Urocanic acid thus was thought to help protect DNA in living skin fromultraviolet light damage, which can lead to cancer. The molecule was even used for a time as a sun screen ingredient. Butman...