Archives: 5/2006

renewal3 hero Telling Us Before theres a Problem: Boston Scientific Releases Physician CommunicationsIn the wake of Guidant’s recall fiasco, Boston Scientific takes the Gallant (rather than Goofus) approach to device performance issues. In a response to a product performance review, they’ve uncovered some issues:

The recent physician communications include an advisory describing the potential for premature battery depletion identified in certain implantable cardioverter defibrillators (ICDs) and cardiac resynchronization therapy defibrillator (CRT-D) devices manufactured with a single lot of low-voltage capacitors from a single supplier. Only devices from this single manufacturer’s lot — 996 devices implanted worldwide (less than one percent of all implants from these device families) — have exhibited an increased probability of premature battery depletion.
In addition, the Company is providing physicians an advisory reporting two device malfunctions associated with RENEWAL 3, RENEWAL 4 and VITALITY HE devices whose implantation was subpectoral and reversed from the common positioning. Most devices are implanted subcutaneously rather than subpectorally. Testing has confirmed that repetitive mechanical stress applied to a specific area of the titanium case can induce component damage and device malfunction, if the device is implanted in this rarely utilized, uncommon manner. Physicians have been asked to review the specific implant positioning for each patient to determine if any of their patients are affected.

In recent reports, physicians demanded transparency above all else when it came to device issues. Seems like we’re headed in the right direction here.
The press release
More from Guidant (now part of Boston Scientific)

We are continuing our investigation into the BlogBurst matter.
For new readers, a quick summary of Medgadget.com’s original investigation into the world of Pluck, an aggregator company. So far, we have conclusively shown that Pluck, a San Antonio based company has engaged, through its service BlogBurst, into a practice of deep linking images from bloggers, as well as from completely independent parties, those that have nothing to do with BlogBurst. Moreover, it is incomprehensible, that the nation’s leading newspapers, including but not limited to the San Francisco Chronicle, Houston Chronicle, San Antonio Express-News, the Austin American-Statesman, together with Pluck, are continuing to engage themselves in the practice of stealing bandwidth via deep linking. We have also shown that Pluck, in its service agreement, is essentially appropriating entire contents of blogs, published at the time of the contract, forever for production of “derivative work.” As it stands now, the derivative work–in the world of Pluck–includes the entire post and pictures. Plus, probably, the bandwidth. (If you want to learn what the BlogBurst agreement means in real life, head to this post by Gary Farber.)
Now on to, what we believe, is a new set of lies by the company. According to their reports and “research”,

“…every blogger that reported their referrals showed between a 15-30% CTR [click trough rate -ed.] back to their blog from their full-posts on the publisher sites. BlogBurst’s model of providing full attribution with each blog post appears to be working well…”

Does it, really? This blogger thinks that he gets 1% CTR. (In the comment section to the post, Eric Newman from Pluck, reassures the blogger that it is actually 15-30%. Our conclusion: the blogger is a moron twice over, for giving up the content, and for thinking that 1% CTR is good for his business. And for being spanked by Pluck on his own website.) Then there is the example of Vagablogging.net, a flagship BlogBurst blog. How much CTR does Rolf Potts, an owner of the site, get? Not much. According to BlogBurst, their page impression numbers are “ramping to millions per week.” But lets see how much traffic Vagablogging gets off BlogBurst. According to his own stats, he got 38 (!) visits since inception of BlogBurst’s service. He’s been all over the travel section at the San Francisco Chronicle, and got about as many visits from them as he will get from this post.
In summary, the only ramping that’s going on is in BlogBurst’s Google AdSense account and in the exploitation of desperate bloggers by a hyping company. Call us old-fashioned, but taking away someone’s works and making money off it is unfair, is predatory, and is despicable.
(Neither Pluck nor the San Francisco Chronicle have returned our requests for comments.)
References:
They Own the Aggregator, Now (They Think) They Own the Content
Beware BlogBurst: A “Derivative Work” Decoy; Nation’s Main Newspapers Continue to Steal Bloggers’ Bandwidth (part 2)
BlogBurst Outrage: Broken Promises; Nation’s Newspapers Continue Stealing Bandwidth (part 3)
Major Newspapers Hotlink Images from Unsuspecting Companies; Drain Bandwidth and Server Resources Without Permission
Voices from the blogosphere (the list is growing…):
WROTE: bye bye blogburst
Living the Scientific Life: Beware BlogBurst
Bitch Ph.D.: Caveat Bloggor
Orac: “BlogBurst is a predatory company that is taking advantage of the naivete of bloggers.”
TalkLeft: “I am concerned about the hot-linking of images using my bandwidth and the reprinting of the entire text of my posts… I don’t intend to write for newspaper readers for free. I don’t want them co-opting my posts as their own.” (link)
Stillbop: Cheap crumbs
Fistful of Euros: Beware BlogBurst: Bad for Business
Living the Scientific Life: Beware BlogBurst, Part Deux
The Examining Room of Dr. Charles: “I was approached by a blog syndication service called BlogBurst sometime ago, and considered joining. I guess I’m glad I didn’t.” (link)
Amygdala: The BlogBurst agreement dissected
GruntDoc: MedGadget on BlogBurst: Bloggers be aware
Meryl Yourish: All your blog are belong to Pluck
The Plagiarism Today: Blogburst Backlash
Steve Outing: Blog syndication: Should you or shouldn’t you?
Journerdism: Bloggers get a financial lift from Scoopt, Blogburst has a new competitor
Online Journalism Blog: Bloggers – sell your wares
The LOOSE wire blog: An Agency for the Citizen Reporter

7525325 The PremaCare Neonatal Incubator
The press release from 360 Grader Produktdesign, a Norway-based design consultancy, says that its product, the PremaCare Incubator, has won the SolidWorks Design Contest award (SolidWorks Corporation is a maker of 3D CAD software.)
The PremaCare Neonatal Incubator is to be manufactured by Delphi Medical Systems (Troy, MI), which describes some of the features of the product:

Listed below are several of the improvements the PremaCare incubator will deliver:
* Temperature – A double-wall dome keeps the air flow warm at a steady temperature, keeping the baby warm even when access is needed and the doors are open.
* Air quality – An open conventional incubator exposes the patient to unfiltered air. A specially-designed filtering system ensures that air entering the incubator continues to be filtered even when the incubator doors are open.
* Noise – The incubator’s design place electrically and acoustically noisy components away from the infant to reduce noise and electromagnetic radiation.
* Ergonomics – This design raises the bar in ergonomics for incubators developing a patented five-door access system and providing 360 degrees of access to the infant and more convenient proximity overall. With components placed at the bottom, this incubator is more stable and can be set at different heights.
* Also, this new incubator design provides easy access to all components so they can be cleaned, repaired or replaced quickly and easily.
“Making newborns’ first crib more comfortable and safer is an especially satisfying venture. We look forward to finding the best channels to distribute these improved incubators around the world,” Sevrain said. [Christophe Sevrain, managing director of Delphi Medical Systems -ed.]

360 Grader Produktdesign press release
Delphi Medical press release
The product page over at 360 Grader Produktdesign
SolidWorks announces winners of Design Contest 2005…

623656 Mission to the Inside of a Living Cell: A Review
National Cancer Institute’s Alliance for Nanotechnology in Cancer has another fascinating review article. This one is about the future of Asimov-like intracellular adventures, with nanosputniks, functioning nanoprobes sent to explore a living cell. [btw, the term "nanosputnik" is coined for the first time right here right now to describe exploratory nanoparticles (as far as we know) -ed.]
A teaser:

Unlike planetary probes, those designed to penetrate a cell and report on the conditions within that cell must be sufficiently small, exceedingly bright, and stable for a long time – material properties that are often mutually exclusive. Probes must also remain stable in the intracellular environment, and not disrupt the cell’s normal biochemical functioning. Recently, a research group at Old Dominion University led by X. Nancy Xu, Ph.D., prepared a series of silver (Ag) nanoparticles that meet many of the criteria listed above. Although smaller than 100 nanometers (nm) in diameter, these particles are bright enough to be seen by eye using optical microscopy.
“One of the key advantages is that unlike fluorophores, fluorescent proteins, or even quantum dots, the silver nanoparticles do not photodecompose (fall apart) during extended illumination,” explained Xu. Therefore, they can be used as a probe to continuously monitor dynamic events in living cells during studies that last for weeks or even months. Because the color of the scattered light from nanoparticles depends upon their size (Figure 1), they have been used to measure the change in single membrane pores in real time using a technique known as dark-field optical microscopy. Intracellular and extracellular nanoparticles can also be differentiated by the intensity of light scattering (Figure 2). “The primary challenge now is to develop methods for modifying the surface of the nanoparticles to make them more biocompatible, so that more biological processes can be observed without perturbing or destroying the cell’s intrinsic biochemical machinery,” said Xu.

Read the whole thing…

gene chip h12 A Novel Algorithm for Detecting Cancer GenesThe National Science Foundation (NSF) is reporting that investigators at New York University’s Courant Institute of Mathematical Sciences have developed a novel algorithm that “makes it much easier to detect certain cancer genes, and as a test, have applied it to map a set of tumor-suppressor genes involved in lung cancer.”
The NSF gives a brief overview on how the algorithm analyses data from the gene-chips:

An algorithm is a step-by-step process for solving problems mathematically or by computer. The new one works by combining and manipulating the data generated by “gene chips,” which can scan large swaths of a genome at once to find mutations or other changes in the DNA. The algorithm estimates whether an important genomic segment is missing. The process is akin to guessing whether a new edition of a book lacks an important paragraph by checking if some of the key words in that paragraph are missing from the index.

More details from the NYU press office:

The NYU algorithm estimates the location of tumor suppressor genes by analyzing segmental deletions in the genomes from cancer patients and the spatial relation of the deleted segments to any specific genomic interval. Since the gene-chip consists of many “probes”-each one characterizing an almost unique word and its location in the already-sequenced human genome-by combining these probe-measurements, one can estimate if an important genomic segment is missing. By analogy, this process is akin to guessing if a new edition of a book is missing an important paragraph by checking if some of the important key words in that paragraph are missing from the index of the new edition. The new algorithm computes a multipoint score for all intervals of consecutive probes, and the score reflects how well the deletion of that genomic interval may explain the cancer in these patients. In other words, the computed score measures how likely it is for a particular genomic interval to be a tumor suppressor gene implicated in the disease. In order to validate their algorithm, the authors produced a high fidelity in silico model of cancer, and checked how well they can detect the right genes, as they modified various parameters of the model in an adversarial manner. Encouraged by the success of their in silico study, they applied the algorithm to currently available patient data, and discovered that they were able to detect many genes that were already known in the literature, but also, several others that are statistically equally significant, but not found by the earlier studies.
The findings also showed that the algorithm may be applied to a wider class of problems-including the detection of oncogenes, which promote the growth of cancer when they are mutated or overexpressed. As the technology and the statistical algorithms of this nature keep improving in cost and accuracy, it will prove useful in finding good biomarkers, drug discovery, disease diagnosis, and choosing correct therapeutic intervention. The members of the NYU group (the authors, Dr. Salvatore Paxia and Dr. Thomas Anantharaman) are in the process of creating a simpler user interface for their software, providing interoperability across many different chip technologies, and finally, making it publicly available in order to facilitate its free and wide-spread usage.

The NYU press release
The NSF report

41401315 The Trachoma Dipstick Test DevelopedResearchers at the Cambridge University’s Department of Haematology have demonstrated a new very sensitive and rapid easy-to-use test for trachoma, an eye infection, endemic in many parts of the world. The infection, easily treated by azithromycin, is caused by Chlamydia trachomatis. The disease is thought to be the leading infectious cause of blindness in the infected parts of the world. Here’s how Cambridge describes the work of its researchers:

In a trial involving over 600 Masai children living in the shadow of Mount Kilimanjaro, Tanzania, the assay proved to be more than twice as effective in detecting trachoma than traditional analysis. It took just one hour to train local health workers to carry out the tests which were then evaluated in a village ‘office’ without electricity or running water, using tables and chairs as makeshift lab benches. The results are published in this week’s edition of The Lancet
The wafer-thin, 8cm long trachoma dipstick is an adaptation of the award-winning ‘FirstBurst’ diagnostic test to detect the sexually-transmitted form of Chlamydia, which is highly contagious (resulting in more than 90m new cases every year) and can lead to infertility in women.
Both tests were developed by a team working at Cambridge University led by Dr Helen Lee with funding from the Wellcome Trust. Dr. Lee has set-up Diagnostics for the Real World, a spinout company based on the technologies developed at Cambridge. The goal of the company is to improve health in resource-poor settings by developing badly needed diagnostic tests for neglected diseases.
Claude-Edouard Michel, one of the leaders of the programme, who works with Dr Lee in Cambridge’s Diagnostics Development Unit, said: “We have shown this test can work in the most difficult circumstances without even the most basic of laboratory equipment.”
Professor Mabey, from the London School of Hygiene and Tropical Medicine, said: “The test is an important advance in the fight against trachoma. At present, the amount of azithromycin pledged by the manufacturer, Pfizer, will not be sufficient to treat everyone living in endemic communities. Yet, much of the drug is wasted in treating communities which no longer need it.
“The new test will enable programme managers to find out for themselves which communities still harbour the infection and thus to focus treatment on the communities which really need it.”

More at Cambridge…
More from BBC News

Reuters reports about interesting research that looked at autistic patients through a prism of fMRI (functional magnetic resonance imaging) scans.

451242 Brits have a screw loose when it comes to flossingWe tend to think that using one of these in the ears for cleaning, gives you some (actually lots of) pleasure. Brits, on the other hand, find one of these useful for in between teeth debridements. From a press release by the British Dental Health Foundation:

Five worst flossing implements used by people in the UK:
- 1. Screwdrivers -2. Earrings -3. Needles -4. Keys -5. Paper clips
A survey has revealed that people are risking their oral health by picking their teeth with dangerous household implements!
According to the National Dental Survey, conducted by the British Dental Health Foundation in association with HealthSure, many people simply use whatever is close to hand to remove food trapped between the teeth.
Over 60% of people questioned for the survey admitted to using makeshift items to pick their teeth, with screwdrivers, scissors, needles and knives being among the answers given.

The press release

Medgadget readers suffering from eating clay, nuts and bolts, glass, bicycles, and other, are encouraged to contact ABC’s “Primetime” for a possible nationwide television appearance. Link.
Flashbacks: Pica Watch; Rare Breed of Clay Aficionados