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Selenium shows promise as antibiotic coating for medical devices

Selenium shows promise as antibiotic coating for medical devices | Longevity science | Scoop.it

Although it’s known to kill bacteria, selenium has never been tried as an antibacterial coating for implanted medical devices ... until now, that is.

 

Engineers from Rhode Island’s Brown University have applied coatings of selenium nanoparticles to pieces of polycarbonate – the material used for things like catheters and endotracheal tubes – and then exposed those samples to Staphylococcus aureus bacteria. In some cases, populations of the bacteria were subsequently reduced by up to 90 percent.


The researchers started by growing separate batches of both large and small selenium nanoparticles, then coating polycarbonate samples with them – some samples were coated with only large nanoparticles, while others were coated with only small ones. Within each of those groups, they then applied tape to some samples, then ripped it off. This was done both to test how durable the coatings were, and to see how effective less-dense coatings would perform as compared to ones that were left intact.


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Easter Island drug improves learning and memory in mice of all ages

Easter Island drug improves learning and memory in mice of all ages | Longevity science | Scoop.it

Rapamycin, a bacterial product first discovered in a soil sample from Easter Island – also known as Rapa Nui, hence the name – is an immunosuppressant drug used to prevent rejection in organ transplants that has now been found to enhance learning and memory in young and old mice alike.

 

Researchers at the School of Medicine at The University of Texas (UT) Health Science Center San Antonio made the discovery while looking for a way to prevent the decline in cognitive skills that comes with age.

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How 3D Printing The Human Body Works [Infographic]

How 3D Printing The Human Body Works [Infographic] | Longevity science | Scoop.it

Imagine for a second that you are suffering from some kind of liver illness that reduces your liver function to 10%. In order to recuperate, you would need a liver transplant or another fix that increases your liver’s function. In the future, that could be entirely possible thanks to 3D printing.

 

As a matter of fact, scientists and engineers all say that it won’t be long before we can print custom made full organs to replace the non-functioning ones.

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Accelerated Tech News 11: Singularity Hub

Accelerated Tech News 11: Singularity Hub | Longevity science | Scoop.it

This week's video news from Singularity Hub gives you the top blurbs on skin cancer, stem cell veins and more...

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ImmunID's new biomarker links reduced immune diversity with cancer

ImmunID's new biomarker links reduced immune diversity with cancer | Longevity science | Scoop.it
ImmunID's latest biomarker is named divpenia®, which underpins a new concept for the scientific community for reduced immune diversity of T & B lymphocytes potentially correlated to immune deficiencies.

Via Brian Shields
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Gut-On-A-Chip, The Latest In Scientists’ Attempt To Mimic Organs In The Lab | Singularity Hub

Gut-On-A-Chip, The Latest In Scientists’ Attempt To Mimic Organs In The Lab | Singularity Hub | Longevity science | Scoop.it

“Organ-on-a-chip” technologies could not only do away with animal models that have proven disappointingly unreliable, but their ease of use and affordability could speed up the drug discovery process.

 

The newest of these, gut-on-a-chip, attempts to mimic the physiology, structure, and mechanics of the human intestines. It is roughly the size of a thumb drive and contains a central chamber that houses a pliant, porous membrane lined with human intestinal epithelial cells, producing an artificial intestinal barrier. It can even harbor the microbes normally abundant in our gut’s luminal space.

 

Not only does the 3D chip mimic organ anatomy, the membrane is controlled with a vacuum pump to produce the peristaltic motions that occur during digestion.

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New Patch Makes Certain Skin Cancers Disappear | Singularity Hub

New Patch Makes Certain Skin Cancers Disappear | Singularity Hub | Longevity science | Scoop.it

Note that this is not fully successful yet, but an interesting prototype:

 

What if treating skin cancer was just a matter of wearing a patch for a few hours? At this year’s Society of Nuclear Medicine’s Annual Meeting one group of researchers presented such a patch.

 

The patch is infused with phosphorus-32, a radioactive isotope used to treat some types of cancer. In a study of 10 patients with basal cell carcinoma located on their faces, the patch was applied for three hours, then for another three hours four and seven days later. When biopsies were taken three months after treatment all ten patients, ranging from 32 to 74 years old, showed no traces of their tumors.

 

**When biopsies were performed again at six months, however, the basal cell carcinomas had returned in two of the patients.

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Vitamin D plus calcium tied to longer life: study

Older people who take vitamin D and calcium supplements may live a bit longer than their peers, according to an international review of several studies covering more than 70,000 people.

 

The percentage may sound small, but over a population, the numbers are significant.

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Virtual safety panel predicts drugs' side effects

Virtual safety panel predicts drugs' side effects | Longevity science | Scoop.it

A team of scientists from the UCSF School of Pharmacy, Novartis Institutes for Biomedical Research (NIBR) and SeaChange Pharmaceuticals has developed a set of computer models that can predict negative side effects associated with existing drugs. By speeding up the process and increasing accuracy, the software could potentially save billions in research and decrease the number of animals used in toxicity tests.

 

The model, based on UCSF’s “similarity ensemble approach” (SEA), uses the similarities between the shape of each drug and thousands of other compounds to predict possible side effects. The theory behind SEA technology is that proteins can be related by their pharmacology, and these network relationships can be explored to discover new targets for established drugs.

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Tracing the genetic pathway from the first Eukaryotes to Homo sapiens

Tracing the genetic pathway from the first Eukaryotes to Homo sapiens | Longevity science | Scoop.it

www.dhushara.com/book/unraveltree/unravel.htm

 

The Tree of Life, in biological terms, has come to be identified with the evolutionary tree of biological diversity. It is this tree which represents the climax fruitfulness of the biosphere and the genetic foundation of our existence, embracing not just higher Eukaryotes, plants, animals and fungi, but Protista, Eubacteria, and Archaea, the realm, including the extreme heat and salt-loving organisms, which appears to lie almost at the root of life itself.


Via Dr. Stefan Gruenwald
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Vein grown from stem cells saves 10-year-old girl

Doctors in Sweden have replaced a vital blocked blood vessel in a 10-year-old girl using the first vein grown in a lab from a patient's own stem cells.

 

The successful transplant operation, reported online in The Lancet medical journal on Thursday, marks a further advance in the search for ways to make new body parts.

 

It could open the door to stem cell-based grafts for heart bypass and dialysis patients who lack suitable blood vessels for replacement surgery, and the Swedish team said it is now working with an undisclosed company to commercialize the process.

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Flame retardants found in common grocery store foods

Flame retardants found in common grocery store foods | Longevity science | Scoop.it

HBCD - The newest player in toxic chemicals

In a recent study of best-selling grocery store products, researchers discovered that almost 50 percent of the sampled peanut butter and deli meats, as well as turkey, fish, beef and other fatty foods, contained hints of a flame retardant normally utilized in the foam insulation of building walls.

You're probably wondering how a chemical used in building insulation makes its way onto our grocery shelves.



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Do statins drain your energy?

There is a large population that take 'statin drugs' to lower cholesterol.

 

These drugs are very effective, but can result in muscle pain and fatigue. Why? The drugs deplete the body's natural reserves of CoEnzyme Q10, which is involved in energy production at the cellular level.

 

Fortunately, supplementing with the enzyme can help restore the blood levels and counterract the side effects. But few doctors mention this when they prescribe the drugs.

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How Fit is Your City?

How Fit is Your City? | Longevity science | Scoop.it

Fitness is often a combination of personal choice and environmental support, experts say, and a ranking of the 50 healthiest U.S. cities seems to reinforce the theory.


High rates of physical activity helped to propel Minneapolis-St. Paul to the top of the list of the American College of Sports Medicine's 2012 American Fitness Index (AFI) for the second year in a row, while raised obesity levels and smoking pushed Oklahoma City to the bottom.

 

"When I say Minneapolis ranked No. 1, people give me an 'are you kidding me' kind of look," said Walter  

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New vaccine could provide lifetime immunity to nicotine addiction

New vaccine could provide lifetime immunity to nicotine addiction | Longevity science | Scoop.it

Researchers at Weill Cornell Medical College have developed a vaccine that could help existing smokers quit for good and prevent those yet to try cigarettes from ever becoming addicted.

 

The vaccine turns the recipient’s kidney into a factory continuously churning out antibodies that clear the bloodstream of nicotine before it has a chance to reach the brain and deliver it’s addictive rush. Unlike previously tested nicotine vaccines that only last a few weeks, the effects of a single dose of this new vaccine should last a lifetime.

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#ASCO12 Data Digest: Combating Resistance in Lung Cancer | The Haystack

Great Post by Sally Church reviewing the current data from ASCO on Combating resistance to therapies in the treatment of Lung Cancer 


Via Brian Shields
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Rethinking G20: SESIÓN 2: PROVOCAR EL SIGNIFICADO

Dr. Terry Grossman presented at the G20: Designing the Future conference in Mexico. His portion begins at about 1:22:46 and runs 12 minutes.


(G20: SESIÓN 2: PROVOCAR EL SIGNIFICADO)

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CRN~The Benefits of Nutritional Supplements

CRN~The Benefits of Nutritional Supplements | Longevity science | Scoop.it

The Council for Responsible Nutrition (CRN), the dietary supplement industry's leading trade association, has released its comprehensive report, The Benefits of Nutritional Supplements (4th Edition).

 

The updated book assesses the current state of the science on the health benefits associated with select nutritional supplements. It looks at positive studies as well as null and negative study results.

 

Specifically, the report addresses multivitamins, antioxidants (vitamins C and E), calcium, long chain omega-3 fatty acids (fish oils), vitamin D, vitamins B-6 and B-12, fiber and folic acid.

 

The report can be downloaded (individual chapters or in its entirety) at the CRN website.

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Elevated levels of human hormone motivates mice to exercise

Elevated levels of human hormone motivates mice to exercise | Longevity science | Scoop.it

A team of Swiss researchers has discovered that raising the levels of the hormone erythropoietin (Epo) in the brains of mice resulted in the rodents being more motivated to exercise.

 

The discovery provides the possibility of developing a pill that can motivate people to want to exercise.

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Artificial spinal disc designed to treat chronic lower back pain

Artificial spinal disc designed to treat chronic lower back pain | Longevity science | Scoop.it

 

More spare parts news!

 

The soft, collagen-rich shock absorbers in our backs, known as intervertebral discs, both add to our height (a full quarter of the spinal column's total length) and cushion our vertebrae from contacting one another. Unfortunately, aging, accidents and overuse can damage them and lead to the costly phenomenon of chronic back pain – roughly US$100 billion is spent annually on treatment in the U.S. alone.

 

Replacement of damaged discs, rather than spinal fusion, is an option that's growing in popularity, especially because it helps maintain mobility in the spine. Now, a team from Brigham Young University (BYU) has unveiled their new artificial disc, a compliant mechanism that they believe has the potential to restore quality of life to millions of those with injured spines.

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U.S. cancer survivors to rise by a third by 2022: report

U.S. cancer survivors to rise by a third by 2022: report | Longevity science | Scoop.it

Reuters) - The number of Americans living with cancer will increase by nearly a third to almost 18 million by 2022, according to a report released on Thursday by the American Cancer Society.

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Healthy Fish Recipes (Video)

Healthy Fish Recipes (Video) | Longevity science | Scoop.it

Most of us start with the most basic technique....grilling.  Think steak, hot dogs and burgers placed directly over the hot coals.  The fats drip and the flames flare.  Great taste. Delicious.  Memories of childhood summers. 

 

Well, the research finds that this type of cooking not only destroys the nutritional value of foods.  It also makes the foods harmful.

 

Overcooked and charred meats have been shown to be more highly linked to heart disease and cancer than meat more carefully prepared.  

High temperature, direct heat cooking causes fatty acids - the building blocks of oils and fats - to oxidize...

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Potential Biomarker Emerging for Diabetic Neuropathy

Potential Biomarker Emerging for Diabetic Neuropathy | Longevity science | Scoop.it
An emerging biomarker may eventually lead to new approaches for treating diabetics at risk of developing nerve damage, UNSW researchers have found.

Via Brian Shields
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Being heavy may help men with one type of cancer: study

Being heavy may help men with one type of cancer: study | Longevity science | Scoop.it

Reuters) - Extra weight may not be good for your health in general, but heavy men appear more likely to survive a particular form of immune system cancer, according to a U.S. study

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Awesome Video Explains Synthetic Biology | Singularity Hub

Awesome Video Explains Synthetic Biology | Singularity Hub | Longevity science | Scoop.it

"A succinct, yet powerful animation titled “Synthetic Biology Explained” shows the incredible potential of this emergent field and how engineering will transform the field of genetics to produce some truly amazing technology.

 

With the sequencing of the human genome and the increased understanding of genes that have followed..."

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