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Keyword: antibioticresistance

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  • Twelve hours to get a Z-pack? Thanks, Řbamacare, for nothing.

    01/06/2014 6:16:12 PM PST · by lightman · 97 replies
    6 January AD 2013 | Self
    South-central Pennsylvania has been clobbered by a nasty cold, flu, or combination thereof for all of this brief new year. So much so that the state is listed as "widespread" on the flu map published by the Weather Channel. I get that. What I don't get is why it took my adult son nearly twelve hours to obtain a Z-pack. He did the responsible thing by calling his primary physician (a truly unmercenary practitioner, who works solo and sees many of the poor who others shun) early this morning...around 10 AM. The overworked physicians office--I did say this flu thing...
  • Drug-Resistant Superbugs Kill at Least 23,000 People in the U.S. Each Year

    09/20/2013 5:43:09 PM PDT · by neverdem · 8 replies
    Scientific American ^ | September 16, 2013 | Dina Fine Maron
    Each year, more than two million people in the United States develop antibiotic-resistant infections, and at least 23,000 of them die as a result, says the first-ever national snapshot of the issue. That toll only rises when other conditions exacerbated by these infections are included in the count. Because itÂ’s difficult to attribute a death directly to antibiotic-resistant microbes (as opposed to illnesses that put the person in the hospital to begin with), the U.S. Centers for Disease Control and Prevention says these figures probably underestimate the scale of the problem. CDC today released the findings as part of a...
  • Genetic test fingers viral, bacterial infections: Method could help doctors treat children's fevers

    07/24/2013 12:29:45 AM PDT · by neverdem · 4 replies
    Science News ^ | July 16, 2013 | Tina Hesman Saey
    By differentiating between bacterial and viral fevers, a new test may help doctors decide whether to prescribe antibiotics. Fevers are a common symptom of many infectious diseases, but it can be difficult to tell whether viruses or bacteria are the cause. By measuring gene activity in the blood of 22 sick children, Gregory Storch, a pediatrician and infectious disease researcher at Washington University in St. Louis and colleagues were able to distinguish bacteria-sparked fevers from ones kindled by viruses. The activity of hundreds of genes changed as the children’s immune systems responded to the pathogens, but the team found that...
  • Silver makes antibiotics thousands of times more effective

    06/21/2013 9:02:11 PM PDT · by neverdem · 43 replies
    Nature News ^ | June 19, 2013 | Brian Owens
    Ancient antimicrobial treatment could help to solve modern bacterial resistance. Like werewolves and vampires, bacteria have a weakness: silver. The precious metal has been used to fight infection for thousands of years — Hippocrates first described its antimicrobial properties in 400 bc — but how it works has been a mystery. Now, a team led by James Collins, a biomedical engineer at Boston University in Massachusetts, has described how silver can disrupt bacteria, and shown that the ancient treatment could help to deal with the thoroughly modern scourge of antibiotic resistance. The work is published today in Science Translational Medicine1....
  • How to Stop the Rise of Superbugs

    06/03/2013 7:35:31 PM PDT · by neverdem · 40 replies
    The American ^ | June 3, 2013 | Waldemar Ingdahl
    The rise of 'superbugs' is causing tens of thousands of deaths a year in the United States alone. A problem as complex as antibiotic resistance will require several solutions. Increasing antibiotic resistance is of great concern — the health of millions is dependent on our ability to defeat the threat of infectious diseases. The World Health Organization estimates that multi-drug resistance accounts for more than 150,000 deaths each year from tuberculosis alone.Without effective antibiotics in health care, humanity would be thrown back to the time when urinary tract infections and pneumonia were lethal. Infant and maternal mortality would rise and...
  • Receptor Proteins Hold Clues to Antibiotic Resistance in MRSA, Scientists Say

    05/30/2013 5:35:47 PM PDT · by neverdem · 3 replies ^ | May 28, 2013 | Sergio Prostak
    A team of researchers led by Dr Angelika Gründling from Imperial College London has discovered 4 proteins that act as receptors for an essential signalling molecule in bacteria such as the methicillin-resistant Staphylococcus aureus (MRSA).This micrograph shows methicillin-resistant Staphylococcus aureus (Janice Haney Carr / CDC / Jeff Hageman / M.H.S.) A recently discovered molecule called cyclic diadenylate monophosphate (c-di-AMP for short) appears to play a vital role as a messenger in many bacteria, carrying signals between parts of the cell. There is evidence that strains with more c-di-AMP are more resistant to antibiotics.But until now, very little was known about...
  • Breast Milk Protein HAMLET Reverses Antibiotic Resistance in MRSA, Pneumococcus

    05/30/2013 12:42:41 PM PDT · by neverdem · 17 replies ^ | May 14, 2013 | Natali Anderson
    According to a new study reported in the open-access journal PLoS ONE, a human breast milk protein complex called HAMLET can help reverse the antibiotic resistance of bacterial species, including penicillin-resistant Streptococcus pneumoniae and methicillin-resistant Staphylococcus aureus.The image shows a healthy Streptococcus pneumoniae bacterial cell, upper left, next to a bacterial cell destroyed and lysed by the human milk protein complex HAMLET, lower right (Laura R. Marks) In petri dish and animal experiments, HAMLET (Human Alpha-lactalbumin Made Lethal to Tumor Cells) increased bacteria’s sensitivity to multiple classes of antibiotics, such as penicillin and erythromycin.“The effect was so pronounced that bacteria...
  • ScienceShot: Killing Bacteria, With a Little Help From Breast Milk

    05/14/2013 9:45:39 PM PDT · by neverdem · 7 replies
    ScienceNOW ^ | 1 May 2013 | Beth Skwarecki
    Known for its painful skin infections as much as its namesake resistance to methicillin, MRSA is a scary germ in a world where old antibiotics don't always work. But now, researchers have managed to make MRSA sensitive to methicillin again by pairing the drug with a protein complex first discovered in breast milk. In a paper published today in PLOS ONE, the researchers show that the complex, known as HAMLET (for human alpha-lactalbumin made lethal to tumor cells—it's multitalented) helped methicillin kill MRSA in the noses of mice at a dose of 10 micrograms, while the antibiotic alone was ineffective...
  • Scientists map protein that creates antibiotic resistance

    03/30/2013 2:34:39 PM PDT · by neverdem · 4 replies
    Nature News ^ | 27 March 2013 | Alla Katsnelson
    Molecule changes shape to help organisms kick drugs out of cells. Japanese researchers have determined the detailed molecular structure of a protein that rids cells of toxins, but can also reduce the effectiveness of some antibiotics and cancer drugs by kicking them out of the cells they are targeting. The scientists have also identified a molecule that can thwart the activity of the protein, one of a class known as multidrug and toxic compound extrusion transporters (MATEs) that are found in cell membranes. The discovery suggests new approaches to combat antibiotic resistance and boost the power of cancer therapies, the...
  • Resurrection of 3-billion-year-old antibiotic-resistance proteins

    03/19/2013 9:47:51 PM PDT · by neverdem · 9 replies
    Biology News Net ^ | February 27, 2013 | NA
    Scientists are reporting "laboratory resurrections" of several 2-3-billion-year-old proteins that are ancient ancestors of the enzymes that enable today's antibiotic-resistant bacteria to shrug off huge doses of penicillins, cephalosporins and other modern drugs. The achievement, reported in the Journal of the American Chemical Society, opens the door to a scientific "replay" of the evolution of antibiotic resistance with an eye to finding new ways to cope with the problem. Jose M. Sanchez-Ruiz, Eric A. Gaucher, Valeria A. Risso and colleagues explain that antibiotic resistance existed long before Alexander Fleming discovered the first antibiotic in 1928. Genes that contain instructions for...
  • Antibiotic resistance is a ‘ticking time bomb’

    03/19/2013 8:48:16 PM PDT · by neverdem · 16 replies
    Chemistry World ^ | 13 March 2013 | Ned Stafford
    MRSA is one of a number of bacteria that are resistant to many antibiotics © Science Photo LibraryGlobal research efforts to develop new antibiotics need to be accelerated urgently, the UK government’s chief medical officer has warned. She adds that that new drugs are desperately needed to fight the ‘catastrophic threat’ of growing antimicrobial resistance.In the second part of her annual report Dame Sally Davies focuses on antimicrobial resistance and infectious diseases. She says that the development of new antibiotics has stalled since the late 1980s because ‘there are fewer economic incentives’ to produce new antimicrobial agents than for other...
  • New Bacteria Raises Concern

    12/03/2012 1:31:48 AM PST · by neverdem · 167 replies
    KDLT ^ | November 29, 2012 | Laura Monteverdi
    A deadly bacteria known as Carbapenem-Resistant Enterobacteriaceae, or CRE, is raising concerns in the medical community. Jennifer Hsu in an Infectious Disease Physician at Sanford Health and has been closely studying this 'super bug' which is best known for it's ability to defy even the strongest of drugs. “What has happened over time with increasing exposure to antibiotics the bacteria have developed ways to evade those antibiotics and they become resist to a certain class of antibiotics,” said Hsu. In the United States, the bacteria have been found primarily in healthcare facilities and hospitals and are known to prey on...
  • Soil May Be Source of Drug-Resistant Bacteria

    09/01/2012 12:05:04 AM PDT · by neverdem · 15 replies
    ScienceNOW ^ | 30 August 2012 | Sarah C. P. Williams
    Enlarge Image Digging in the dirt. Soil may be the source of some antibiotic resistance. Credit: Chris Price/iStockphoto A scoopful of soil, teeming with microscopic life, contains a rich library of genes that help bacteria thrive in the wild. Some of those genes, new research has found, are identical to those that allow disease-causing bacteria in humans to survive antibiotic treatment. The finding suggests that innocuous soil bacteria could be the original source of some antibiotic-resistant genes seen in hospitals. "Soil ecologists have been predicting for quite a while that the soil acts as a reservoir for resistance," says molecular...
  • Scripps Research Scientists Reengineer an Antibiotic to Overcome...Antibiotic-Resistant Bacteria

    08/24/2011 2:36:03 PM PDT · by decimon · 9 replies · 1+ views
    The Scripps Research Institute ^ | August 24, 2011 | Unknown
    LA JOLLA, CA – August 24, 2011 – A team of scientists from The Scripps Research Institute have successfully reengineered an important antibiotic to kill the deadliest antibiotic-resistant bacteria. The compound could one day be used clinically to treat patients with life-threatening and highly resistant bacterial infections. The results were published in an advanced online issue of the Journal of the American Chemical Society. “[These results] have true clinical significance and chart a path forward for the development of next generation antibiotics for the treatment of the most serious resistant bacterial infections,” said Dale L. Boger, who is Richard and...
  • Multi-drug resistant staph in 1 of 4 supermarket meat samples

    04/19/2011 11:05:04 AM PDT · by neverdem · 21 replies
    Ars Technica | April 17, 2011 | Maryn McKenna
    Ars Technica is from Condé Nast, so it can't be posted. Go to the link.
  • Mighty micelles that make themselves

    04/07/2011 7:32:39 AM PDT · by neverdem · 3 replies
    Chemistry World ^ | 04 April 2011 | Carol Stanier
    Scientists in the US and Singapore have made self assembling micelles of cationic polymers that kill bacteria but are biodegradable - raising further hope of a nanotechnology solution to the problem of antibiotic resistance.Conventional antibiotics typically kill by penetrating the cell wall and disrupting vital cellular processes inside. But bacterial resistance to such antibiotics is growing because bacteria that survive treatment go on to proliferate, thereby spreading their genetic advantage.Some cationic peptides can kill bacteria by disrupting the cell wall of the bacteria instead, and resistance in this case is less likely to arise. But these peptides are often toxic to the host and...
  • The spread of superbugs - What can be done about the rising risk of antibiotic resistance?

    04/05/2011 11:05:59 AM PDT · by neverdem · 45 replies
    The Economist ^ | Mar 31st 2011 | Masthead Editorial
    ON DECEMBER 11th 1945, at the end of his Nobel lecture, Alexander Fleming sounded a warning. Fleming’s chance observation of the antibiotic effects of a mould called Penicillium on one of his bacterial cultures had inspired his co-laureates, Howard Florey and Ernst Chain, two researchers based in Oxford, to extract the mould’s active principal and turn it into the miracle cure now known as penicillin. But Fleming could already see the future of antibiotic misuse. “There is the danger”, he said, “that the ignorant man may easily underdose himself and by exposing his microbes to non-lethal quantities of the drug...
  • Putting bacterial antibiotic resistance into reverse

    04/25/2010 6:05:46 PM PDT · by decimon · 12 replies · 395+ views
    ANAHEIM, CA – The use of antibiotics to treat bacterial infections causes a continual and vicious cycle in which antibiotic treatment leads to the emergence and spread of resistant strains, forcing the use of additional drugs leading to further multi-drug resistance. But what if it doesn't have to be that way? In a presentation at the American Society for Biochemistry and Molecular Biology's annual meeting, titled "Driving backwards the evolution of antibiotic resistance," Harvard researcher Roy Kishony will discuss his recent work showing that some drug combinations can stop or even reverse the normal trend, favoring bacteria that do not...
  • ScienceDaily: “Slowing Evolution to Stop Drug Resistance”

    11/21/2009 3:32:25 PM PST · by GodGunsGuts · 6 replies · 795+ views
    AiG ^ | November 21, 2009
    ScienceDaily: “Slowing Evolution to Stop Drug Resistance” --snip-- For years, evolutionists have pointed to antibiotic resistance as proof of evolution in action. The argument often amounts to this (in simplified form): the fact that certain organisms grow resistant to certain antibiotics is evidence for the evolutionary idea that all animals must have descended from a single ancestor. Collapsing the argument does make it seem a bit silly, but that’s our point. We certainly don’t want to belittle the very real threat of dangerous organisms becoming immune to the best drugs we now have (though the vast majority of microbes are...
  • Hybrid nano material targets antibiotic resistant bacteria

    09/09/2009 12:52:33 AM PDT · by neverdem · 1 replies · 405+ views
    Chemistry World ^ | 08 September 2009 | James Urquhart
    German researchers have developed a hybrid, light activated nanomaterial that can target, label and kill harmful antibiotic resistant bacteria such as Escherichia coli. The zeolite-based material may one day play a major role in both diagnosing and treating infectious diseases and possibly cancer, suggests the team.So-called 'photodynamic therapy' is a well-established technique in which a light source is used to trigger the action of a light-sensitive drug, and is already used to treat cancer and macular degeneration. However, scientists have been eager to develop cheaper therapeutic approaches with more functions. One such approach would be to develop a single nanomaterial that...