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Osteoporosis Drug Lasofoxifene May "Fight" Several Diseases But Increases Risk of Blood Clots

Posted: May 21, 2010 at 8:16 am

Lasofoxifene is a part of a class of drugs known as nonsteroidal selective estrogen-receptor modulators (SERMs). It has already been shown to decrease the bone loss associated with osteoporosis, like other SERMs, including tamoxifen and raloxifene. But until now its effect on other health conditions commonly experienced by postmenopausal women was unknown.

The women who took lasofoxifene had an 81% lower risk of estrogen-receptor (ER) positive breast cancer, a 32% lower risk of heart-related events like heart attack, and a 36% lower risk of stroke. "This is the first SERM that reduces the risk of all of these conditions at once."

However, not all the results were positive. As with other SERMs, women taking lasofoxifene had double to nearly three times the risk of experiencing a serious blot clot of the deep veins.

References:
Osteoporosis Drug May Fight Several Diseases. WebMD, 2010.

Image source: Flickr, Creative Commons license.

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Recommendation and review posted by G. Smith

The Association of Medical Illustrators Fresh Website

Posted: May 21, 2010 at 8:15 am

Association of Medical Illustrators website screenshot

For many of you who are interested in pursuing medical illustration or just want to know more about the field in general, the Association of Medical Illustrators website (ami.org) is a resource rich information portal.  It contains everything you need to know about medical illustration including career information, tutorials, artist galleries, graduate program information, and much more.

Association of Medical Illustrators expert techniques screenshot

The AMI did an amazing job updating their website from what was once a very outdated resource so I highly recommend browsing through all of the fresh resources on the site.  And if you’re in need of a medical illustrator, check out the online Medical Illustration sourcebook.  Many of my favorite illustrators and animators are listed in it, including Hybrid Medical Animation, AXS, Anatomy Blue, and Bryan Christie.

The AMI is also introducing a trial membership for a special fee of only $100!  This is a great opportunity to join the community and network for basically the price of a student membership. I highly recommend joining!

Recommendation and review posted by G. Smith

How Bad Can a House Investigation be for DTC Genomics?

Posted: May 21, 2010 at 8:15 am


Ok, so you've been summoned to Congress to testify


It won't be that bad if you know what you are in for. So let's review.

1. A chart listing the conditions, diseases, consumer drug responses, and adverse reactions for which you test;

2. All policy documents, training materials, or written guidance materials regarding genetic counseling and physician consultations, including documents regarding what conditions, diseases, drug responses, or adverse reactions trigger the need for genetic counseling or physician consultation, and documents governing communications with consumers regarding individual genetic testing results;

3. All documents relating to the ability of your genetic testing products to accurately identify consumer risk, including:

a. internal and external communications regarding the accuracy of your testing;

b. documents describing how your analysis of individual test results controls for scientific factors such as age, race, gender, and geographic location;

c. third party communications validating the association between the scientific data your company uses for analyzing test results and the consumer's risk for each condition, disease, drug response, or adverse reaction as identified by the results of an individual test; and

d. documents relating to proficiency testing conducted by your clinical laboratories.

4. All documents regarding your policies for processing and use of individual DNA samples collected from consumers, including:

a. policy documents and protocols regarding collection, storage, and processing of individual DNA samples;

b. policy documents and protocols relating to protection of consumer privacy; and

c. documents regarding collected DNA sample uses other than to provide individual genetic counseling to a consumer, including documents relating to third-party use of collected DNA samples.

5. All documents regarding compliance with the Federal Food, Drug, and Cosmetic Act and
U.S. Food and Drug Administration (FDA) regulations.

And you should have that to them in about 2 weeks.

What could be so harmful?

If you know anything about the history of such investigations, they are mostly a dog and pony show that ends up in one of a few options.

1. Public Pillorying that leads to a slap on the wrist and a consumer base who doesn't trust you anymore (See Toyota)

2. A massive class action lawsuit from some enterprising attorneys who review the publicly available documents that the House requests via Freedom of Information.

3. The Congress forces you to behave like normal society rather than a bunch of radicals trying to take over the world.

4. Some clone company sees all your internal documents via a Freedom of Information Act, copies the good, removes the bad and launches in like 6 months.......

5. Someone goes to jail, perp-walk style.

Since 5 is not realistic, I think we can expect some combination of 1-4 for these companies.

The worst outcome is probably Number One here.

The consumer base already doesn't trust Google/23andSerge
Navigenics already has a distribution network, but if the physicians don't trust the test, they won't order it.
Pathway will have a bump in the road and no retail launch.

Number 2 could hurt too, especially Ms Wojiciki who could get personally named in the suit as well as investors like Dyson.

If I was the lawyer, those are the deep pockets I would be after. Navigenics is owned by P&G now and their corporate counsel will likely shield them.

Pathway has probably the least customers to be exposed to such a lawsuit, unlike 23andSerge's 30k

Number 3 stinks for the "Research Revolution, Che Style" but probably won't hurt Navigenics or Pathway.

Number 4 is a definite reality. I have already heard that scuttlebutt on the street.

So, I ask. Is getting companies to behave responsibly and acknowledge that some of what they are doing is medical testing so bad? Ryan made the move. Very smartly Ms. Phelan. I knew she would.

The Sherpa Says: This certainly is a nice distraction from Tar Balls and Toyota...

Recommendation and review posted by G. Smith

h+ Magazine on Switching Memory Back On

Posted: May 20, 2010 at 8:17 am

From h+ Magazine: "A new study [sheds] some light on how 'memory disturbances' in an aging mouse brain are associated with altered 'hippocampal chromatin plasticity' - the combination of DNA, histones, and other proteins that make up the chromosomes associated with the hippocampus. Specifically, the study describes an acetyl genetic switch that produces memory impairment in aging 16-month-old mice. Because the acetyl wasn't present in young 3-month-old mice, the study concludes that it acts as a switch for a cluster of learning and memory genes. ... when young mice are learning, an acetyl group binds to a particular point on the histone protein. The cluster of learning and memory genes on the surrounding DNA ends up close to the acetyl group. This acetyl group was missing in the older mice that had been given the same tasks. By injecting an enzyme known to encourage acetyl groups to bind to any kind of histone molecule, [researchers] flipped the acetyl genetic switch to the 'on' position in the older mice and their learning and memory performance became similar to that of 3-month-old mice. ... [Researchers hope] that the study of hippocampal chromatin plasticity and gene regulation in mice will help them to identify therapeutic strategies to encourage neuroplasticity (the formation of new neural networks in the brain), to improve learning behavior, and to recover seemingly lost long-term memories in human patients."

View the Article Under Discussion: http://www.hplusmagazine.com/articles/neuro/switch-memory

Read More Longevity Meme Commentary: http://www.longevitymeme.org/news/

Recommendation and review posted by Fredricko

Memory and Longevity Treatments

Posted: May 20, 2010 at 8:17 am

Via EurekAlert!: "Two methods of extending life span have very different effects on memory performance and decline with age. ... While the nematode C. elegans is already well known for its utility in longevity research, previously it was not known how the memory of C. elegans compares with that of other animals, or whether longevity treatments could improve learning and memory. To answer these questions, [researchers] designed new tests of learning and memory in C. elegans, then used these tests to identify the necessary components of learning, short-term memory, and long-term memory. They found that the molecules required for learning and memory appear to be conserved from C. elegans to mammals, suggesting that the basic mechanisms underlying learning and memory are ancient. The authors also determined how each of the behaviors declines with age, and tested the effects of two known regulators of longevity - dietary restriction and reduced Insulin/IGF-1 signaling - on these declines. Surprisingly, very different effects on memory were achieved with the two longevity treatments: dietary restriction impaired memory in early adulthood but maintained memory with age, while reduced Insulin/IGF-1 signaling improved early adult memory performance but failed to preserve it with age. These results suggest not only that longevity treatments could help preserve cognitive function with age, but also that different longevity treatments might have very different effects on such declines."

View the Article Under Discussion: http://www.eurekalert.org/pub_releases/2010-05/plos-pmw051210.php

Read More Longevity Meme Commentary: http://www.longevitymeme.org/news/

Recommendation and review posted by Fredricko

UNBELIEVABLE??

Posted: May 20, 2010 at 8:17 am

A headline reporting a new Harris Poll survey stated that “Very few Americans find statements by financial institutions completely believable.”  One specific item of interest was that 51 percent of the respondents said that a statement made by someone who works for a health insurance company was believable (2 percent completely believable, 49 percent somewhat believable) while 49 percent answered not at all believable.  Banks, investment firms and government agencies that regulate financial institutions all fared poorly in the believability research. 

These results are not shocking in light of the health care debate and economic stresses that reverberate throughout the economy.  However, the survey shows the depth of the difficulty people have with companies and government agencies that are indispensible to their financial well being. 

This is a good time for intermediaries, whether they are trusted authors, financial advisors, academics and others to fill the void that is obviously missing in the public’s confidence in key industries.  Changes in health care, for example, are sure to cause people to have to rethink sometimes decades old strategies to financing coverage.  The health insurance industry will play a key role in the implementation of health reform, so designing a system in which the public has a basic level of trust is not a trivial matter.

Recommendation and review posted by Fredricko


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