A New Orleans woman recently lost an arm to necrotizing fasciitis — the so-called “flesh-eating bacteria” — after injecting a drug called “bath salts,” according to a case study report in the medical journal Orthopedics [1]. She presented with cellulitis, a skin infection, two days after attending a party at which she injected the drug. The infection initially responded to administered antibiotics, but then worsened. The woman lost not only her arm, but her breast and a large portion of her chest wall to amputation. The significant removal of tissue was necessary to prevent the spread of the bacteria.
Archives for January 2012
A Pill-Sized MRI Powered Robotic Endoscope
January 17, 2012 | by
Researchers from Tel Aviv University in Israel and Brigham & Women’s Hospital in Boston are working on a robotic endoscope. The size of a large pill, the magnetic microswimmer is powered by strong magnetic fields generated by an MRI machine.
The technology was recently published in the journal Biomedical Microdevices. A 20mm long, 5mm wide swimming tail made of copper and flexible polymer vibrates due to the magnets in the MRI machine and propels the capsule endoscope in the stomach. Propulsion speed is on the order of several millimeter per second.
What makes this endoscope truly different from current “capsule endoscopies,” which involves swallowing a pill-sized camera that takes pictures continuously until it is passed, is that electronics and microsensors embedded in the robotic endoscope will allow an operator to manipulate the magnetic field and guide the movement of — literally steer — the device through the GI tract.
In the future, the microswimmer may allow doctors to find difficult-to-diagnose, early stage cancer or allow for treatments such as biopsies or local drug delivery.
The Fat Trap: Why Lost Pounds Return
January 16, 2012 | by
It’s not you. You’re not imagining it. It really, actually, legitimately is harder to keep weight off than it is to lose it in the first place. You really do feel hungrier than you used to, and still the pounds keep creeping back on. This is the conclusion that Dr. Joseph Proietto and his colleagues at the University of Melbourne just published in the New England Journal of Medicine [1].
Lose weight image via ShutterstockControversial Anti-obesity Ads Aim to Reduce Childhood Obesity
January 12, 2012 | by
A new series of billboard and television ads is outraging Georgians, who object to the “Stop Sugarcoating It, Georgia” campaign being run by the Children’s Healthcare of Atlanta pediatric hospital. The ads depict overweight and obese children in a variety of settings, and are meant to shock parents into action.
Ion Proton Sequencer for Genome Sequencing
January 11, 2012 | by
Ever since the human genome was sequenced in 2000, there’s been talk of a “$1,000 genome” — the ability to map an individual’s complete genome for one thousand U.S. dollars.
Life Technologies announced yesterday that it has achieved that milestone with the release of the new benchtop Ion Proton Sequencer, which is designed to sequence the entire human genome in a single day (existing DNA sequencing technologies take a week or longer) for $1,000 USD.
