Search Immortality Topics:

Page 8,543«..1020..8,5428,5438,5448,545..8,5508,560..»

Longevity Meme Newsletter, May 10 2010

Posted: May 11, 2010 at 8:15 am

LONGEVITY MEME NEWSLETTER
May 10 2010

The Longevity Meme Newsletter is a weekly email containing news, opinions, and happenings for people interested in aging science and engineered longevity: making use of diet, lifestyle choices, technology, and proven medical advances to live healthy, longer lives. This newsletter is published under the Creative Commons Attribution 3.0 license. In short, this means that you are encouraged to republish and rewrite it in any way you see fit, the only requirements being that you provide attribution and a link to the Longevity Meme.

To subscribe or unsubscribe from the Longevity Meme Newsletter, please visit http://www.longevitymeme.org/newsletter/

______________________________

CONTENTS

- Aubrey de Grey at the Lift10 Conference
- SENS Foundation is Looking for an Academic Coordinator
- Grow Fat and Suffer the Consequences
- A Conservative View of Exercise and Alzheimer’s
- Discussion
- Latest Healthy Life Extension Headlines

AUBREY DE GREY AT THE LIFT10 CONFERENCE

Biomedical gerontologist and engineered longevity advocate Aubrey de Grey spoke at the Lift10 conference in Geneva this past weekend:

http://www.fightaging.org/archives/2010/05/aubrey-de-grey-at-the-lift10-conference-in-geneva.php

“The questions people invariably ask de Gray focus on such mundane matters as where all these extra people will live, how pension plans will pay for them and what they’ll do with their time, but he says the questions are not the right ones. We should balance out these against the problems caused right now by ‘100,000 people a day getting very sick and staying that way a long time and then dying.’”

SENS FOUNDATION IS LOOKING FOR AN ACADEMIC COORDINATOR

Amongst its other projects, the SENS Foundation runs an academic outreach initiative which allows life science students to work on projects important to the repair of aging, such as isolating bacterial enzymes capable of breaking down damaging aggregates that build up in the body with aging. The most recent program coordinator has moved on to work at a cancer immunotherapy startup, and so the Foundation is looking for a new hire:

http://www.fightaging.org/archives/2010/05/sens-foundation-is-looking-for-an-academic-coordinator.php

GROW FAT AND SUFFER THE CONSEQUENCES

Excess fat tissue and the lifestyle required to obtain it have long-term and significant consequences in terms of your health and life expectancy:

http://www.fightaging.org/archives/2010/05/grow-fat-and-suffer-the-consequences.php

“Increasing urbanization, aging populations, obesity, and falling levels of physical activity are all contributing to the rise of type 2 diabetes worldwide. The main cause is the growing prevalence of obesity, in Europe and in Latin America. In North America obesity is considered to be responsible for 90% of type 2 diabetes in females. Male obesity is associated with type 2 diabetes slightly less, at 70-80% in the European Union and in the US. … Thin, healthy people aren’t thin and healthy because they have magic genes. They’re thin and healthy because they are eating less and exercising more than the fat folk. This isn’t rocket science, and it does have an impact on the bottom line of your life expectancy.”

A CONSERVATIVE VIEW OF EXERCISE AND ALZHEIMER’S

Regular exercise makes everything better:

http://www.fightaging.org/archives/2010/05/a-conservative-view-of-exercise-and-alzheimers-disease.php

“The benefits [of exercise] tend to be on the order of a 20 to 30 percent reduction in being diagnosed with Alzheimer’s disease and other such diseases. And again, this isn’t universal but this is found in an increasing number of studies. … There are improvements in the chemistry of the brain in terms of the molecules that protect the brain, increases in the number of connections between neurons, which allows us to encode new learning and memory, and even the birth of new neurons in one region of the brain that supports memory.”

Bear in mind that Alzheimer’s has many similarities with type 2 diabetes, in terms of its risk factors and even aspects of its biochemistry:

http://www.fightaging.org/archives/2005/11/alzheimers-as-a-1.php

DISCUSSION

The highlights and headlines from the past week follow below. If you have comments for us, please do send e-mail to [email protected]

Remember – if you like this newsletter, the chances are that your friends will find it useful too. Forward it on, or post a copy to your favorite online communities. Encourage the people you know to pitch in and make a difference to the future of health and longevity!

Reason
[email protected]

______________________________

LATEST HEALTHY LIFE EXTENSION HEADLINES

STEM CELLS VERSUS PARKINSON’S DISEASE AGAIN (May 07 2010)
http://www.longevitymeme.org/news/vnl.cfm?id=4715
A number of past studies have shown improvement in Parkinson’s disease with stem cell transplants. Here is another: “Endometrial stem cells injected into the brains of mice with a laboratory-induced form of Parkinson’s disease appeared to take over the functioning of brain cells eradicated by the disease. The finding raises the possibility that women with Parkinson’s disease could serve as their own stem cell donors. Similarly, because endometrial stem cells are readily available and easy to collect, banks of endometrial stem cells could be stored for men and women with Parkinson’s disease. … In the current study, the researchers generated stem cells using endometrial tissue obtained from nine women who did not have Parkinson’s disease and verified that, in laboratory cultures, the unspecialized endometrial stem cells could be transformed into dopamine-producing nerve cells like those in the brain. The researchers also demonstrated that, when injected directly into the brains of mice with a Parkinson’s-like condition, endometrial stem cells would develop into dopamine-producing cells. … stem cells derived from endometrial tissue appear to be less likely to be rejected than are stem cells from other sources.”

RESTORING MEMORY FUNCTION IN OLD MICE (May 07 2010)
http://www.longevitymeme.org/news/vnl.cfm?id=4714
From the New Scientist: “when young mice are learning, a molecular fragment known as an acetyl group binds to a particular point on the histone protein that DNA wraps itself around – with the result that the cluster of learning and memory genes on the surrounding DNA ends up close to the acetyl group. … This acetyl “cap” was missing in the older mice that had been set the same tasks. From this, the team concludes that the cap acts as an “on” switch for the cluster of learning and memory genes: removing the cap switches off the genes. Next, by injecting an enzyme known to encourage caps to bind to any kind of histone molecule, [researchers] artificially flipped the switch to the on position in old mice. The acetyl group returned to the histone molecule and the mice’s learning and memory performance became similar to that of 3-month-old mice. … it is still not clear why the switch flips off as we get older. One possibility is that it might help us cope with other cellular assaults that come with ageing, such as oxidative stress, [which] would mean that switching it on might have damaging side effects.”

VACCINATING AGAINST ATHEROSCLEROSIS (May 06 2010)
http://www.longevitymeme.org/news/vnl.cfm?id=4713
An interesting example of how immune therapies can eliminate or reduce some of the ways in which the aging body damages itself: “Cholesterol is transported in the blood in LDL particles, which are a kind of fat drops that can accumulate in the walls of blood vessels. LDL activates the immune defence and triggers an inflammation in the blood vessels that leads to atherosclerosis (also known as arteriosclerosis). When the atherosclerotic plaque finally ruptures, a blood clot is formed that in turn can cause a heart attack or stroke. It was previously thought that the inflammation in the blood vessels arises when the T cells react to oxidised LDL particles located in the atherosclerotic plaque. Now, however, [researchers have found] that the opposite is true, namely that the T cells react to components in the normal LDL particles, and that they no longer recognise LDL once it has been oxidised. … Since reactions to LDL can be dangerous, T cells are normally held in check by inhibitory signals. The body’s own control works well as long as the LDL keeps to the blood, liver and lymph glands. But when it accumulates in the artery wall, this inhibition is no longer enough, the T cells are activated and an inflammation arises. … Vaccination against the receptor that the T cells use to recognise LDL can block the immune reaction and reduce the disease by between 60 and 70 per cent.”

A TRIAL FOR VIRUSES VERSUS BRAIN CANCER (May 06 2010)
http://www.longevitymeme.org/news/vnl.cfm?id=4712
Viruses can be used as a form of targeted anti-cancer therapy, and human trials are soon set to start: “Particular parvoviruses normally infect rodents, but they are also infectious for human cells. However, they do not cause any disease symptoms in humans. Most importantly, these viruses have an astonishing property: They kill infected tumors cells without causing any damage to healthy tissue. … Many different viruses have been tested before in cancer therapy, particularly for treating those types of cancer for which there are no effective established treatment methods. The [researchers] realized early on that parvovirus H-1 has important advantages over other viruses. Now they have been the first to prove that malignant glioblastomas regress completely as a result of treatment with these viruses. … Parvoviruses pass the blood brain barrier so that they can be administered via the blood stream. In addition, they reproduce in cancer cells, which is particularly important for successful treatment of glioblastoma with its diffuse growth. Thus, the second generation viruses reach and eliminate even those cancer cells that have already settled at some distance from the primary tumor. … researchers [expect] to be able to admit the first patients to the trial by the end of the year.”

LINKING INSULIN RESISTANCE AND MITOCHONDRIAL DAMAGE (May 05 2010)
http://www.longevitymeme.org/news/vnl.cfm?id=4711
From EurekAlert!: “The muscles of elderly people and of people with type 2 diabetes contain lower concentrations of a protein known as PARL (short for ‘presenilin-associated rhomboid-like’). PARL plays an important role within cells in remodeling power-generating mitochondria. It’s PARL’s job to oversee mitochondria’s quality control, specifically by maintaining their integrity as the cellular components undergo normal processes of fission and fusion. The findings provide yet another link between insulin resistance and the function of mitochondria. … When mitochondria aren’t functioning properly, food doesn’t get metabolized to the level that it should … Instead of getting burned, fats accumulate in cells where they impair insulin’s action. As mitochondria fail to work efficiently, they also produce more damaging free radicals. … Relative to younger people, older people showed signs of insulin resistance. They also had fewer numbers of mitochondria and lower expression of the PARL gene. … We hypothesize that impaired PARL function is an important risk factor for the development of insulin resistance in skeletal muscle by decreasing mitochondrial mass and energetics and increasing oxidative stress, thus contributing to impaired glucose metabolism. As insulin resistance continues to develop, mitochondrial function, oxidative damage, and PARL activity may decline further, leading to a vicious cycle that eventually contributes to the development of [diabetes] or other age-associated diseases, including sarcopenia.”

CALORIE RESTRICTION BOOSTS IMMUNE FUNCTION (May 05 2010)
http://www.longevitymeme.org/news/vnl.cfm?id=4710
The Seattle Times notes recent research: “A new study finds that calorie restriction may bolster the immune system in adults. Researchers [randomly] placed 46 overweight, but not obese, men and women age 20 to 40 on one of two diets for six months: one in which calories were reduced 10 percent, and another in which they were reduced 30 percent. All food was supplied to the test subjects. The participants were tested to see what effect calorie restriction had on their immune system. They were given a delayed-type hypersensitivity test, which can detect allergens, among other things, and is considered a way to check whole-body immune response. Researchers also checked T-cells, a kind of white blood cell, and another immune system marker. At the end of the six months, [delayed type hypersensitivity] response went up in both the 10 percent and the 30 percent calorie-restricted groups compared with the beginning of the study. Both groups also showed improvement in T-cell function.”

WHAT TO DO ABOUT THE FRAGILITY OF HUMAN STEM CELLS (May 04 2010)
http://www.longevitymeme.org/news/vnl.cfm?id=4709
From the SENS Foundation: “Progress toward the goal of tissue rejuvenation via stem cells and tissue engineering (“RepleniSENS”) is badly hampered by the surprising fragility of human embryonic stem cells (hESC) relative to mouse ESC (mESC). Unlike their murine counterparts, hESC undergo extensive cell death following enzymatic single-cell dissociation; as a result, researchers are forced to rely on laborious mechanical microdissection, or on narrowly-control enzymatic dissociation that ensures that hESC remain above a minimum cluster size. These requirements make their expansion extremely tedious and inefficient. The reasons for the intolerance of hESC to full dissociation – and the development of means to ameliorate it – are therefore of considerable biomedical as well as scientific interest. This month, researchers [report] that they have at once apparently provided the detailed molecular basis for this frustrating anomaly, and its abrogation using either modified culture protocols or either of two small molecules. … Injected into an area that already enjoys a high level of government and industry investment, these tools bring us closer to realizing the promise of cell therapies and tissue engineering for the treatment of a range of age-related and traumatic diseases and disorders, as well as for the rejuvenation of aging tissues.”

AN EXAMPLE OF ALCOR’S WORK (May 04 2010)
http://www.longevitymeme.org/news/vnl.cfm?id=4708
Accelerating Future notes an example of Alcor’s work in cryonics provision. We only tend to hear about the times when unusual obstructions crop up, and so it’s worth a reminder that Alcor’s staff and volunteers regularly make the difficult organization of a cryosuspension look routine: “This past month, Alcor was faced with three members who were admitted to hospice with end-stage conditions. On back-to-back days, two of our members were cryopreserved while the third member’s condition has temporarily improved. Through careful planning, we were able to have two members admitted into the same Hospice of the Valley facility, literally across the hall from each other. This allowed Alcor’s Arizona team to carefully monitor both members’ conditions simultaneously, 24 hours a day. Having three team members and Alcor’s Rescue Vehicle on site, we were able to provide immediate stabilization and cool down procedures and exceptionally quick transfer from time of pronouncement to Alcor’s surgery suite in 40 minutes and 32 minutes, respectively. These cases were very important as they tested numerous benchmarks of Alcor’s abilities … The real benefit of all of our preparations, training and planning is to our members, who reportedly received excellent perfusions.”

THE LIMITS OF THERAPY (May 03 2010)
http://www.longevitymeme.org/news/vnl.cfm?id=4707
From the SENS Foundation: “To date, the dominant therapeutic strategy for both specific age-related diseases and (to the extent that it has been contemplated) the degenerative biological aging process itself, has been based on altering metabolic pathways. Biomedical research has centered on the detailed understanding of pathways seen to be contributing to disease etiology or pathogenesis, and the identification of putatively dysfunctional components hormones, receptors, enzymes, cytokines, etc), which are then targeted for manipulation by small molecules or other means in hopes of normalizing function and thereby alleviating symptoms or slowing progression of pathology. … there is a critical flaw in the unconsciously-drawn analogy between its use in the development of therapies to manage specific diseases, and its potential for the treatment of the degenerative aging process. Unlike most non-communicative diseases, degenerative aging is not the result of the dysfunction of metabolic pathways, but of the the undesirable long-term side-effects of their normative biochemistry. Put another way: biological aging is the pathological result of perfectly-functioning, [healthy] metabolic processes. … Thus, transposing the conventional drug-development pathway onto the aging process necessarily entails interfering with the normal metabolism – and doing on an indefinite basis, from the day that a ‘patient’ first begins therapy until his or her death. But of course, those same pathways evolved to ensure survival and fitness, and their existence and the normal mode of regulation are the very basis of ordinary health and function. We interfere with the intrinsic operation of such pathways at our peril.”

THOUGHTS ON REJUVENATION AND ALZHEIMER’S VACCINES (May 03 2010)
http://www.longevitymeme.org/news/vnl.cfm?id=4706
A detailed examination of recent progress from the SENS Foundation: “Recent years have seen both substantial progress, and significant frustration, in the preferred regenerative engineering approach to the treatment and prevention of Alzheimer’s disease (AD), and the eventual regeneration of genuinely youthful cognitive function: immunotherapeutic clearance of beta-amyloid (AmyloSENS). … results appear to many to commend an earlier window of opportunity for intervention, before concomitant [damage] and neuronal losses have made the removal of beta-amyloid alone insufficient for cognitive rescue. Early intervention might also maximize the therapeutic window for vaccination, preventing the burden of beta-amyloid neuropathology from ever reaching levels so high as to interact with other forms of aging damage in already frail and immunosenescent people.” Present work on immune therapies for clearing unwanted biochemical junk from the body looks promising – there is every sign that today’s advances will broaden into a general technology platform for this purpose. Researchers will be able to develop therapies that can be applied incrementally throughout life to remove the age-related gunk like beta-amyloid before it rises to dangerous levels.

______________________________

If you have comments for us, please do send email to [email protected].

Recommendation and review posted by G. Smith

Personal Genomes in Clinical Care. Quake paper is a waste!

Posted: May 11, 2010 at 2:11 am

With all due respect to the scientists involved in analyzing Stephen Quake's genome in clinical context.

You did a major league $h!tty job.

No offense.

I can only assume this based on what you reported in the lancet paper.

Start by asking yourself.

"Is Stephen healthier because of what that genome and clinical assessment added to his care?"

I am speaking precisely on this topic at the Consumer Genomics Conference on June 3rd at 830 AM. So I will hold off on all my arguments....But,

The Paper
even says

"We noted that most of the sequence information is difficult to interpret, and discussed error rates"

Ummm, ok. Nice counseling session.

"patients with whole genome sequence data need information about more diseases with a wide clinical range"

Perhaps that person could actually be a physician, maybe a generalist?

"For this we offered extended access to clinical geneticists, genetic counsellors and clinical lab directors"

Nice! Joubert's is not Gilbert's is not Plavix. Thanks for stopping by.

I did appreciate that your paper calculated pretest probabilities. Unfortunately these were based on a pedigree which had no ethnicity and incomplete clinical data.

1. No Glycohemoglobin to evaluate for diabetes risk or maybe even diagnose it
2. No Iron Studies to evaluate for Hemochromatosis, yet you state genes may set him up for it.
3. No documentation of a physical exam including DRE for prostate hypertrophy/cancer or PSA
4. No dietary history? No Smoking history? No social history?

Shall I go on?

You show increased risk for Diabetes post test as well as prostate cancer, obesity, CAD, MI, Asthma, NHL, RA (no ESR/CRP/CCP?)

You projected an increased risk for 7 and decreased for 8. Yet no Assessment of MCI etc in Alzhemiers disease? My god, you did a stress test in an asymptomatic patient who exercises daily.

"Although the methods we used are nascent, the results provide proof of principle that clinically meaningful information can be derived about disease and response to drugs in patients with whole genome sequence data"

Translated: We made up a system and used novel DNA results to hypothesize about disease risk using research fellows, computer programs an excellent cardiologist (Not a GP) and an Echo machine.......But we skimped on the physical exam, use of primary care doctors, complete blood counts and other clinically useful testing and procedures.

I admire your efforts, but

A. You have missed the boat in using not all the tools at hand
B. By being Genome-centric, we miss the clinical picture.

"Although no methods exist for statistical integration of such conditionally dependent risks, interpretation in the context of the causal circuit diagram allows assessment of the combined effect of environmental and genetic risk for EVERY individual"

Translation: Nothing exists statistically to evaluate disease interaction and how it may increase risks of interlinked disease.

Ask yourself, "What have we done to make Stephen Quake healthier from this test?". Other than hype the use of a genome clinically?

This paper was all genome and NO CLINICAL ASSESSMENT!

The Sherpa Says: The only thing of note that is important here is the CYP2C19 data.......
I have seen abnormal CGH data in a child with severe developmental delay come directly from a high functioning mother who was a power litigator. The genome scan as it stands now is noise. It also requires a full team a month to intepret. Clearly not ready for medical prevention or prognostication, sorry.

Recommendation and review posted by G. Smith

Barbara Walters, US TV Anchor, to Undergo Heart Surgery to Replace a "Faulty Valve" – Sounds Like Aortic Stenosis

Posted: May 11, 2010 at 12:32 am

Walters announced that she will undergo surgery to replace a "faulty" heart valve later this week.

"You know how I always say to you how healthy I am. ... I've never missed a day's work," she began. "Later this week, I'm going to have surgery to replace one faulty heart valve."

From her description, the valve defect sounds like aortic stenosis. For a variety of reasons, mitral stenosis is a less likely possibility in the differential diagnosis.

Best wishes for successful surgery and speedy recovery!

References:
Barbara Walters to Undergo Heart Surgery. ABC.

Posted at Clinical Cases and Images. Stay updated and subscribe, follow us on Twitter and connect on Facebook.


Recommendation and review posted by G. Smith

L’envers du Corps

Posted: May 10, 2010 at 8:56 pm

L'envers du corps II by Ivan Ebel

L'envers du corps I by Ivan Ebel

Knock out by Ivan Ebel

There’s something so beautiful and intriguing about these paintings by Ivan Ebel.  They remind me of those clinical anatomy textbook diagrams, but so much more warm and human.  I can just envision the middle painting above covering a giant empty wall in the foyer of a hospital or modern doctor’s office.  Love it.

[via Sang Bleu]

Recommendation and review posted by G. Smith

Benefits of Olive Oil Include Fighting Ulcerative Colitis

Posted: May 10, 2010 at 8:16 am

New research indicates that people who ingest more olive oil, grapeseed oil and peanut oil are less likely to get ulcerative colitis.

A new study by researchers at the University of East Anglia has shown that consuming more olive oil can actually prevent ulcerative colitis.  The findings were presented at this year’s Digestive Disease Week conference in New Orleans.  The study centered on oleic acid, which is present in olive oil, peanut oil and grapeseed oil.  Oleic acid is a monounsaturated fatty acid.

Over 120,000 people in the UK and 1 million in the US have ulcerative colitis.  The disease causes inflammation in the lining of the colon and bowel leading to pain and diarrhea.  Other symptoms of ulcerative colitis include fever, weight loss, and gastrointestinal bleeding.

This new research studied over 25,000 middle-aged people in the UK who did not have ulcerative colitis.  The participants completed food diaries during the study, which were then analyzed by nutritionists.

When researchers analyzed the results, they found that the people, who developed ulcerative colitis, had the lowest intake of oleic acid.  On the other hand, those who ate the most foods with oleic acid had a 90% less change of getting ulcerative colitis.

Dr. Andrew Hart was the leader of the research, he stated, “We estimate that around half of the cases of ulcerative colitis could be prevented if larger amounts of oleic acid were consumed.  Two-to-three tablespoons of olive oil per day would have a protective effect.”

Other dietary suggestions for those with ulcerative colitis include drinking lots of water, eating smaller portions, and avoiding fattening greasy foods.  Obviously, these are good suggestions for everyone, even if this digestive issue does not impact them.

Sources:
health.google.com
medicalnewstoday.com

Discuss this post in Frank Mangano’s forum!

Recommendation and review posted by Fredricko

Fibromyalgia is Now Linked to Weight and Obesity

Posted: May 10, 2010 at 8:16 am

Fibromyalgia remains a health problem that is surrounded by a great deal of mystery. However, researchers have proved that those people who exercise and are at a healthy weight are less likely to develop the problem.

A new study from Norwegian University of Science and Technology has shown that overweight and obese women are more likely to develop fibromyalgia.  This study was published in the May issue of Arthritis Care and Research.

Fibromyalgia includes long-lasting pain in points including the neck, shoulder, back, hips, arms and legs.  People with this issue commonly have fatigue, headaches, and trouble with their moods.  Sleep can also be disrupted. The cause of this problem is unknown, though genetics are believed to be a factor.

Some experts believe that fibromyalgia is caused from a dysfunctional nervous system.  Fibromyalgia impacts over 2% of the population of the United States.  Women are more likely than men to develop this problem. The likelihood of fibromyalgia also increases with age.

In this Norwegian study, 16.000 people were surveyed over a period of years.  As it turned out, of the group 380 people developed fibromyalgia. The patient’s exercise habits and BMI were examined over the years.  The results showed that people who exercised and were at a healthy weight were far less likely to have fibromyalgia.

Lead researcher Paul Mork said, “Women who reported exercising four times per week [or more] had a 29 percent lower risk of fibromyalgia compared with inactive women.”  Additionally, women who were heavier had a 60-70% higher change of getting fibromyalgia.  However, the overweight women who exercised were less likely to develop the problem.

As fibromyalgia does seem to run in families, this news is especially relevant for those with a family history.  Those who already have the condition can reduce pain if they reduce their weight and incorporate exercise into their routine.

Sources:
news.health.com
mayoclinic.com

Discuss this post in Frank Mangano’s forum!

Recommendation and review posted by Fredricko


Page 8,543«..1020..8,5428,5438,5448,545..8,5508,560..»