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Tag: "counter" at biology news

How sneaky HIV escapes cells

...ings, published in the June issue of Plos Biology, counter the prevailing belief that HIV and other retroviruses can only leave and enter cells by virus-specific mechanisms. “It appears that cells make HIV and other retroviruses by a naturally occurring export mechanism,” says Stephen Gould, Ph.D., Profess...

Physicist cracks women's random but always lucky choice of X chromosome

... than the other. The observations also seem to run counter to the usual idea that the biological mechanisms evolve in ways that allow a "best" choice to be made between things rather than a random one. Now researchers led by University of Warwick physicist Dr Mario Nicodemi have explained how this randomn...

The price of vanity: Mating with showy males may reduce offspring's ability to fight off pathogens

...on and mate selection may, at least in some cases, counter the immunosuppressive effects of elevated testosterone in females." ...

Growth hormone to boost athletic performance risks diabetes

...arting on the growth hormone. This was done to counter the effects of high blood sugar, but he had stopped taking it after a couple of episodes of acute low blood sugar (hypoglycaemia) while at the gym. Tests revealed that his liver was inflamed, his kidneys were enlarged and that he had very high blo...

ASU researchers test antibacterial effects of healing clays

...(Kaolinite is the major ingredient in the over the counter remedy Kaopectate). But one day, they ran out of clay and moved over to another mountain and people began dying. We wanted to know why." The key to clay's variable nature seems to be its structure. "Clay is a mineral; it has a crystalline structur...

Researchers seek to design first treatment for neuroAIDS

...tionwide are urgently searching for compounds that counter such toxins, with several now in human trials. These include antioxidant medications, calcium channel antagonists, NMDA antagonists like the Alzheimer's drug Memantine, platelet activating factor (PAF) inhibitors, and in the case of the new grant, dr...

'Protecting virus' offers instant flu protection and converts flu infections into their own vaccines

...e against that very form of influenza. It can also counter an actual infection and offer protection if given ...nfection (and possibly longer). It is thus able to counter an actual infection. It could therefore also be used as a treatment for family and other direct cont...

Tiny Tampa Bay fish key to evolution of immune system

...d by the adaptive immune response to recognize and counter components of invading microbes. If so, it would provide an illustration of the potential for studies of diverse species, even those that at first glance may appear to be of no special interest, to yield information of value in understanding human ph...

Paramecia adapt their swimming to changing gravitational force

..., the physicists could measure the force needed to counter the gravitational effect: 0.7 nano-Newtons. For comparison, the force required to press a key on a computer keyboard is about 22 Newtons or more than 3 billion times as strong. Space-based research has demonstrated many puzzling biological effects r...

Americans support free access to research

...n, an ATA founding member). "As scientists work to counter the Avian flu, develop energy alternatives, and grapple with climate change, public access to taxpayer-funded research is more important than ever. The public recognizes its stake in open sharing of research, and the Harris data gives voice to their ...

Chocolate, wine, spicy foods may be OK for heartburn, Stanford study finds

...gered by a particular food. Gerson's advice runs counter to the long-standing recommendations of virtually every professional organization of gastroenterologists, including the American College of Gastroenterology, as well as the National Institutes of Health. For the past 15 to 20 years, the standard trea...

Paleontologists learn how not to become a fossil

...stortion of the fossil record. If the patterns run counter to the distortion, then they have probably identified a biological trend so strong that it has overwhelmed the flaws of the fossil record. Lastly, "we can actually think about ways to correct the record numerically," Jablonski said, adding back the ...

Scientists re-engineer a well-known antibiotic to counter drug resistance

...s case, a single atom in vancomycin was altered to counter an analogous single atom change in the bacterial cell wall that accounts for the resistance. The results, Boger added, suggest that no matter how the VRE altered the cell wall component, it was still sensitive to treatment by the re-engineered vanc...

High resolution 'snapshots' detail dynamics of a cocaine antibody

...ts at developing an effective therapeutic agent to counter the craving, addiction, and overdose of the drug. To date, no treatment has been approved by the Food and Drug Administration (FDA). Commenting on the new findings, Xueyong Zhu, Ph.D., the primary author of the study and a staff scientist in the Wil...

Scientists develop a way to make the deadliest toxin known even more toxic

...e continues to expand, we need to find some way to counter these unintended immune responses. Compounds like the ones we discovered, which produced the greatest protease activation ever recorded, may point the way to a potential solution." Other authors of the study include Laura A. McAllister, Mark S. Hixo...

Anthrax inhibitor counteracts toxin, may lead to new therapeutics

...of infection by targeting the bacteria, but do not counter the advanced destructive effects of anthrax toxin in the body. Anthrax toxin is a polyvalent protein complex in that it displays multiple copies of identical binding surfaces on the same structure. The inhibitor designed by the Rensselaer-Toronto te...

Simple idea to dramatically improve dengue vaccinations

...ections, public health officials have attempted to counter the threat of co-existent versions of Dengue by developing a vaccine against all four versions simultaneously. Doctors found that patients who got a four-component vaccine wound up only being protected against one or two versions at most, due to immu...

Johns Hopkins flu expert calls for mandatory vaccination of health care workers

...atient safety aspects of the program, education to counter beliefs that the shots can make you sick and encouragement from hospital leaders to get the vaccine. The next step, Perl says, is for health care professional associations, such as the Infectious Disease Society of America and the U.S. Joint Commiss...

SLU researchers uncover direct evidence on how HIV invades healthy cells

...ase and protease. As of yet, there are no drugs to counter integrase. By using a biophysical methodology known as Fluorescence Resonance Energy Transfer, Bera and his colleagues showed that the integrase holds the two ends of the viral DNA together prior to integration. Once inside the cell, the two viral D...

Storing carbon to combat global warming may cause other environmental problems, study suggests

...er this increased moisture might boost rainfall to counter tree water withdrawals, co-authors Bruce McCarl of Texas A&M University and Brian Murray of RTI International inResearch Triangle Park, N.C. first investigated where in the United States additional tree plantations would most likely locate. Usin...

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