New way to create stem cells

A colony of embryonic stem cells, from the H9 ...
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Researchers have been able to create stem cells by introducing genes into cells by using viruses. The cells then became stem cells. Unfortunately, viruses are known to mutate genes and that can easily trigger cancer in new cells.

Now a new technique uses plasmids to create stem cells—beating heart cells. Plasmids are elements of DNA that reproduce themselves inside cells and then gradually decay. Experimenters say the new technique is is affordable and efficient. They reported it “worked consistently for 11 different stem cell lines. In each of the 11 cell lines, each plate of cells had around 94.5 percent beating heart cells. It also worked for embryonic stem cells and adult blood stem cells.”

One day soon we’ll be beyond the arguments about where stem cells come from and can move on to discovering more of the healing secrets nature seems eager to unfold.

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Nitric oxide, dark chocolate, and faulty research

Found an email notice today about “dark chocolate’s good and good for you” in which they talk about the fact that dark chocolate may have antioxidant properties that increase the production of one of my favorite substances, nitric

3 Types Of Chocolate
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oxide. Naturally I had to check it out since I’m both a chocolate lover and curious about nitric oxide. They talk about possible effects of flavanols—a subclass of flavonoids—in dark chocolate on human visual and memory performance.

So, okay, I read the whole thing. It’s laid out nicely on the page. The site looks good, and it sounds like fascinating research—testing what effects dark-chocolate-eating had over white-chocolate-eating on the same group of volunteers.

But at the very end the report says that a lot more research has to be done because dark chocolate contains other ingredients not found in white chocolate—chief among which is caffeine. Huh?

Given the craze in our society for caffeine as a magical booster of human performance, it seems incredible to me that these researchers didn’t bother to control for such a powerful substance in these studies.  Made me feel like I’d just wasted my time reading the report.

Hope they keep up the good reporting work but pick better-planned experiments to report on. Check it out: Environmental Health News

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Nanosponges harvest cancer markers

Molecular surface of several proteins showing ...
Molecular surface of several proteins
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Imagine tiny little particles shooting through your bloodstream picking up samples of proteins. That’s what researchers have been able to do with a type of hollow nanosponge that contains “bait” molecules. One of the proteins these molecules attract is Bak, the increasing presence of which has a positive correlation with moles turning into melanoma.

Amazingly, scientists were able not only to capture bits of this rare protein—while keeping out the enzymes that would normally destroy those bits—but they’re also able to get the molecules to release those bits when it’s time to analyze the “catch.”

Given how critical early diagnosis is for successfully treating many types of cancer, this is promising work in nanotechnology.

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Smaller-than-nanotech science–Star Trek of the 21st century

The structure of the perioic table.
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Reading one of my Google alerts for nanotechnology I stumbled on this article and couldn’t quit reading it (even though I only vaguely grasped tiny bits of the concepts). This guy’s  talking about a science of engineering that’s far below nanoparticles in scale. It’s called femtotech (sounds kind of like a cross-gender geek hard at work building a new kind of computer somewhere).

Take a look at this article and video on how tiny you can go with nanotechnology. A British science outfit transcribes the periodic table onto a guy’s single hair–and says they could fit a million of these tables on a single small sticky note. Now think WAY smaller. Now what was that about angels on the head of a pin…?

Ben Goertzel, an artificial intelligence expert who publishes books and blogs about mind and consciousness, in this article examines the question of whether this femtotech can ever really become a practical science. In other words, can we overcome the inherent instabilities of “degenerate matter” (to get this, you’ll have to read the article in the Institute for Ethics and Emerging Technologies) to be able to make things with it. Check out some of Ben’s other titles: Artificial General Intelligence (Cognitive Technologies), The Path to Posthumanity, The Hidden Pattern: A Patternist Philosophy of Mind, Mind in Time: The Dynamics of Thought, Reality, and ConsciousnessCreating Internet Intelligence, and From Complexity to Creativity. Just reading the titles is exciting.

Ben Goertzel giving a talk at the Singularity ...
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Think this guy might be a good resource for future blogs. Thanks, Ben, for your patience in writing so well for the non-technical reader on these astounding discoveries.

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Stem-cell therapy for aging eye disease

A normal range of vision. Courtesy NIH Nationa...
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A normal range of vision.

It’s exciting to hear that researchers are thinking seriously about how stem-cell therapy might help older people. A company is now requesting permission from the FDA to start a clinical trial using it to try to help a common problem of aging—age-related macular degeneration (AMD).

The same view with age-related macular degener...
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The same view with age-related macular degeneration

I saw first-hand how miserable it is to be blind when you get old.  It crippled my ex’s grandmother for years. She couldn’t watch television, sew, read, or do anything to occupy herself in the last decade of her life. Then his mother went through the same thing.

Getting old is bad enough. If we are also robbed of our ability to navigate the world and are unable to enjoy so many formerly rewarding activities, it makes the struggle even more difficult.

Thank heavens the magic of stem cell therapies works for problems of the elderly, too. And that our researchers are interested in exploring ways to help people age more gracefully.

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Stem cells as proving ground for cancer studies

Stem cell diagram illustrates a human fetus st...
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We already know about a host of diseases we can hope to battle more effectively using stem cells. Now I’ve just read about another inspired use of the seemingly limitless power of stem cells to help human beings battle disease.

Scientists have discovered a gene that’s present in many forms of cancer, according to a report on Google news via AFP (an international online news source). In this recent study they’ve been able to use human stem cells as the testing ground to see how this new gene relates to cancer.

The gene FOXM1, injected at higher-than-normal levels into stem cells from an adult human mouth, encouraged abnormal growth that mimicked the abnormal cell growth common with early cancer.

There is evidence that environmental and behavioral factors like UV ray exposure and smoking—the same stuff we’ve come to understand can result in cancer—can lead to increased levels of FOXM1.

I know this study doesn’t say this, but I’m very excited about the possibilities. How much faster may we be able to get to clinical trials for various treatments and drugs by using easily and readily available human stem cells as proving grounds instead of having to first experiment on animals and, later, pray that we’re getting it right with human beings.

Talk about a promising study…

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Molecule may prove target for stroke recovery

Having had two members of my family suffer slightly different debilitating cognitive/speech effects from strokes, I’m intrigued when I hear of promising studies. Now British scientists have done work with mice that shows just that—a promising idea for a treatment given a few days after a stroke, rather than rushing to inject a blood-clot-busting drug ASAP,  might prevent/reverse some of the damage done in affected areas of the brain.

Strokes cause damage by brain cells being starved of oxygen due to a blocked or burst blood vessel. As a result, the affected cells start to die. But it’s known that the brain has the ability to regenerate lost connections via the cells immediately surrounding the damaged area and thus compensate for and/or limit the damage to some degree.

Molecular spacefill of GABAMolecular spacefill of GABA
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Researchers found a build-up at the stroke site of a molecule called GABA appeared to slow activity in the surrounding cells at the very time they would be called on to work at making new connections.

Significantly, the drug they tested that limited the effects of GABA worked best when given about three days after the stroke (at least in the mice). No one’s yet saying this will work for humans, but it does sound well worth pursuing further.

Anything that could help restore a patient’s ability to write (what my mom lost) or to remember how to play an instrument and sing the words to songs he always knew (my brother’s loss) is worth investigating as far as possible.

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Nitric oxide: Signs of becoming a magic bullet?

Sickle cells characterize sickle cell anemia, ...
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They’ve found another surprising use for nitric oxide: pain relief for sickle cell anemia (SCA) patients. Pain is usually the main reason sickle cell anemia patients are admitted to the hospital—and by the time they get to that stage, doctors are way behind on addressing the problem.

Sickle cell anemis is an inherited disease in which blood cells take on an abnormal shape:

“Normal red blood cells are disc-shaped and look like doughnuts without holes in the center. They move easily through your blood vessels. Red blood cells contain hemoglobin (HEE-muh-glow-bin), an iron-rich protein that gives blood its red color. Hemoglobin carries oxygen from the lungs to the rest of the body.

Sickle cells contain abnormal hemoglobin that causes the cells to have a sickle, or crescent, shape. These cells don’t move easily through your blood vessels. They’re stiff and sticky and tend to form clumps and get stuck in the blood vessels. (Other cells also may play a role in this clumping process.)”

Pain is typically due to the fact that the sickle-shaped blood cells are not passing through the circulatory system at the normal pace. They tend to bunch up and cause pain at the site of the backups. as well as lead to “serious infections, and organ damage.”

Since nitric oxide tends to expand the blood vessels, you’d think it might help by letting the blockages flow more freely, but scientists are speculating that inhaling nitric oxide may also affect the hemoglobin directly, restoring normal shape and charge to affected cells. “The more normal negative charge helps cells repel each other, melts sticky polymers and may prevent new ones from forming,” according to Dr. C. Alvin Head, chairman of the Department of Anesthesiology at the Medical College of Georgia School of Medicine.  In fact, he thinks “one of nitric oxide’s usual duties in the body is to help prevent clot formation.”

This doc thinks that once more research is done to confirm exactly how this NO treatment works for SCA, we might get to the point of giving SCA patients nitric oxide inhalers to prevent their own pain from requiring hospitalizations.

So, okay, I’m going to go out on a completely untested limb here. Since the first line of early defense when someone’s having a stroke (a clot somewhere in the body blocks blood flow to the brain) is to inject a clot-busting drug known as TPA, wonder if it makes sense that some day, instead of systemic drugs like coumadin, we might be able to give people nitric oxide inhalers to keep the blood thin and help prevent stroke. Of course, then we’d have to give people a way to measure their INR (a number telling you how thin your blood is) at home. Right now the only ways are: 1) get a blood draw and have it sent to a lab, or 2) get a finger stick and test it right in the office with a special machine. Hey, we educate diabetics to test their blood and adjust their diet for themselves. Perhaps this nitric oxide idea will take hold one day for heart patients and others who need blood thinners.

And here’s a really wild thought. Red wine helps promote the production of nitric oxide in the bod—it’s a natural blood thinner. And if you drink it regularly, you don’t need as much coumadin. Is there ever a time when it isn’t better to take less of a drug (except of course unless alcohol of any kind is contraindicated for other reasons)?

So maybe one day getting your INR (blood thinness measurement) to the “therapeutic” stage (whatever your doctor says it needs to be) will be a case of testing at home and then toasting at home with your glass of red wine! Now that sounds like a magic bullet I could get into.

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Poll shows most Americans for embryonic stem cell research

Diseases and conditions where stem cell treatm...
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As the fate of a decision about funding sources for it hangs in the balance, US News & World Report notes that Harris just conducted a poll about embryonic stem cell research. Results show that a clear majority of Americans across many faiths and credos believe it is neither immoral nor unethical.

In August the federal government appealed U.S. District Court Judge Royce Lamberth’s decision about stopping federal funding for this wildly promising field of research. An appeals court put the ban into suspension so that funding for research could continue.

I just realized that 3 of my last 5 posts on this blog have been about the heartening promises of stem cell research, so you don’t have to guess my opinion about it. And I pray the judges are all listening carefully to the fact that citizens of faiths as diverse as Catholics to born-again Christians are in favor of moving ahead. Many even realize that the United States—in addition to already being embarrassingly low on the infant mortality scale among global nations—will fall light years further behind other countries who develop healing technologies with stem cells.

I haven’t been able to determine yet if US District Court judges are appointed or elected, but we can only hope that such an unenlightened ruling is not motivated by a short-sighted desire to hold onto a judgeship.

There are too many lives to be saved and too much suffering to be prevented for us to refuse the gift that God has given us with the miracle of learning how to use stem cells for healing and regrowth.

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Using stem cells to find drugs’ potential side effects

A colony of embryonic stem cells, from the H9 ...
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If we needed any further proof of how far-reaching the effects of stem cell research can be on making medicine not only less invasive but also more efficient and effective, now comes another momentous discovery.

According to a BusinessWeek article, a couple of pharma companies have developed a way to use stem cells to develop “human” tissue (independent of a living, breathing person), and they’re using the tissue to test drugs for potentially dangerous side effects.

The cost to develop a new drug—which can in some cases exceed $4 billion—usually includes animal trials and then human trials. Researchers have found that stem-cell-generated tissue—they are regularly producing 7 billion heart cells a month from skin and blood stem cells (not embryonic)—mimics the reactions of actual human tissue. And that allows scientists to test drugs for bad effects long before human trials would normally be scheduled.

The happiest part of this report is that this isn’t just the promise of stem cells—this work is actually going on now. One of the pharma companies used the stem-cell tissue to re-test a drug they’d worked on earlier and discarded because of a bad side effect on test animals. They found the drug had exactly the same results on the stem-cell tissue as it had had on the animals. The company realized if it had had this capability back then, it could have stopped development much sooner and saved a bundle.

Consider the potential benefits of making full use of this capability:

  • How much faster might useful drugs get through the pipeline and out to the patients who desperately need them?
  • How much might the cost of new drugs come down with pharmaceutical companies saving millions of dollars in development costs?
  • How many animal lives might be spared because research can be done on this “artificial” tissue instead of on rabbits or mice or chimps?

I say again, with stem cell miracles around every corner, we’ve at last discovered heaven’s own way of healing. And what we do with that power now and in the future will be limited only by our own imaginations .

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Looking at how bioscience news affects business, higher education, government – and you and me