All posts by Barbara Payne

Nanoparticles: Magnetized in the fight to stop cancer from spreading

Most deaths from cancer come after the primary tumor has been treated—usually with some combination of surgery and chemo or radiation—when stray cancer cells from the tumor escape and spread to other parts of the body (metastasis).

Italiano: traduzione italiana di :File:Cancer ...
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Since not all cells from cancer tumors behave the same way or have the same DNA, researchers have been looking for a way to study single cells. The problem was separating them. Now this new nanoparticle approach uses magnets to detect whether cells are growing, dividing or dying. It spins the cells in a magnetic field where each type rotates at a different speed. Larger, dying or dividing cells rotate more slowly and in specific patterns. so they can be separated into a group of single cells. Thus the researcher can focus on investigating the behavior of those particular cells.

One of the big promises of this approach is that scientists may now be able to test drugs on just the cells themselves instead of on the entire human organism—thus avoiding some of the worst side effects for patients. And, instead of throwing everything they have at the patient in hopes of affecting the disease, doctors can work with the cells and then with greater confidence prescribe medicine they’ve been able to test as working best for this individual person.

What a blessing for cancer patients this will be.

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Gene therapy shows big promise for advanced heart failure

DNA vaccine and Gene therapy techniques are si...
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It’s only a small group of patients, but the results are dramatic. A new gene therapy for advanced heart failure looks really promising.

People can live a long time with heart failure if it’s kept under control. But if it gets to where they can’t keep the water from accumulating beyond safe levels in the body’s tissues, patients begin to feel like hell and experience more frequent cardiac events that put them in the hospital.

Researchers conducted a Phase II trial at Mount Sinai School of Medicine with a gene therapy developed there and found it stabilized or improved cardiac function in people with severe heart failure. The patients who were given a high dose of the therapy, called SERCA2a, benefited clinically (which means they felt better or lived longer) and had significantly fewer cardiovascular hospitalizations. The study appears online in the June 27 issue of the American Heart Association journal Circulation.

Simply put, the SERCA2a therapy consists of delivering an inactive virus that carries medication into cardiac cells. It then stimulates the heart cells to produce an enzyme that helps the heart pump more effectively in people with advanced heart failure.

Quality of life is often just as important as longevity. If you can feel okay and not have to go to the hospital every other week or month, it’s a lot easier to live your life more fully. Advanced heart failure is tough—it’s always exciting to see that science continues to find ways to use the tools of nature to help in relatively non-invasive ways.

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Doctor questions American medical research and practices

The Fugitive
The Fugitive (Image via RottenTomatoes.com) Tommy Lee Jones confronts Harrison Ford

“How the pharmaceutical companies distort medical knowledge, mislead doctors, and compromise your health.” That’s what it says the book is about. Just started reading Overdosed America, The Broken Promise of American Medicine, by John Abramson, MD.

Dr. Abramson was a family physician for 20-some years. When he knew he had to write this book he left the practice of medicine. He doesn’t say this, but I’d guess he left because he didn’t want anyone to be able to raise a question about his motives in writing this careful analysis of some seriously negative practices going on in the American medical industry.

Along with his indictments of highly respected medical journals for publishing questionable research conclusions supported by misleading statistical information, he states that billions and billions of American citizens’ dollars are being diverted to the coffers of giant corporations—a la the fictional Devlin MacGregor from the movie The Fugitive .

The first case Dr. Abramson presents concerns Vioxx and Celebrex. He notes two early articles that appeared in the Journal of the American Medical Association from November 24, 1999, touting the supposed beneficial effects of the two drugs for arthritis pain. He then studies the accompanying editorial and notes that it says, in contrast to the articles, there is no statistical benefit of these drugs over older, less expensive drugs. The editorial calculated that preventing a single serious ulcer with either of these medicines would cost the American public $400,000.

And as of 2005, lawsuits were being filed against Merck for misleading people instead about the dangers of Vioxx—an increased risk of heart problems and stroke. Here’s a concise review of how Overdosed America addresses these issues in relation to arthritis patients.

Have personally seen a friend suffering terrible side effects from statins. Dr. Abramson writes about how a patient bullies him into prescribing it for him—despite the doc’s recommendations to the contrary. That’s the next drug he tackles in the book. I’ll let you know what he finds.

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Stem cells found to repair human hearts

Stem cell diagram illustrates a human fetus st...
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Didn’t it have to be only a matter of time? I’m happy but not surprised to find that heart patients are beginning to benefit from having stem cells injected into their body’s operating plant. So far studies are limited, but they involve human hearts, not mice or pigs, and are yielding some very promising results.

In one case patients who’d had a heart attack had their hearts injected with bone marrow stem cells and experienced stronger healing. Even some scars in heart tissue began to fade. In another study patients battling heart failure after a heart attack benefited from injections of their own cardiac stem cells.

Research indicates that timing and sourcing are important. Using cardiac stem cells seems more effective than those from bone marrow. Injecting stem cells too soon or too late can cut short or even nullify benefits.

All the heart patients today have got to be on pins and needles hoping this research will progress rapidly enough to make a difference for them and those who love them.

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Create your own nitric oxide to protect your hearts

Simplified diagram of the human Circulatory sy...
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Exercise. Yeah I know. Do you really want to hear about another way exercise is good for you? Well, this appears to be a slightly new take. It’s about how nitric oxide (NO), a short-lived gas produced by the body during exercise, benefits the heart.

A recent study published in the journal, Circulation Research, says that voluntary exercise (as opposed, I guess, to sitting in some machine that moves your body for you) produces nitric oxide which then “turns on chemical pathways that relax blood vessels to increase blood flow and activate survival pathways [emphasis mine].” Exercise was found to boost “levels of an enzyme that produces nitric oxide (eNOS, endothelial nitric oxide synthase).”

So in short, you choose to exercise. Your body produces NO, then the NO is “stored in the bloodstream and heart in the form of nitrite and nitrosothiols,” which are then withdrawn from storage as needed. And even cooler, these reserves remain elevated for a week after exercise has stopped—“unlike other heart enzymes stimulated by exercise”—and don’t return to baseline until four whole weeks after exercise. So it seems we get a lot for a little effort.

I once had a book called Dr. Naglier’s Body Maintenance and Repair Book. He said, emphatically, that even five minutes of movement a day is so much better for your body than nothing, that you should never not do anything because you’re afraid you couldn’t possibly do all the exercise “they” recommend.

Score another big one for nitric oxide. It’s truly a health friend, and it doesn’t take much to put it to work for you.

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Nitric oxide, genetics and alcohol consumption

Total recorded alcohol per capita consumption ...
Image via Wikipedia - Total recorded alcohol per capita consumption (15+) in liters of pure alcohol

Many a drinker felt a burst of hope/support when scientists first began finding connections between genetic makeup and the urge to drink alcohol. The hope was, if you drank too much, they might find a way to “cure” it, just as they have found cures for so many diseases. And hopefully a gentler cure that doesn’t involve making you violently ill when you take a drink.

The search continues. Researchers have previously established that a “neuronal nitric oxide synthase 1 (NOS1) gene promoter polymorphism, EX1f-VNTR (exon 1f-variable number tandem repeats)” (***see note below) influences both impulsivity and psychopathology.

A recent study now says there may be a reverse correlation between one allele (one member of a pair of genes), the short one, and its pair. The short one, associated with psychpathology and impulsivity—long thought to be linked to alcoholism—has been  considered the “risk” gene for alcohol consumption in humans.

The study indicates it’s actually the long allele that’s a marker for starting drinking at an earlier age, drinking more, and experiencing more severe effects of alcohol. And the study results were significant enough for Clinical Psychiatry News to use the headline: Allele Appears Protective Against Alcohol Use. So they’re getting closer to identifying a genetic link—and creating new hope for treating alcoholism more effectively.

*** Looking up the definition of this incredibly long name didn’t enlighten me much, but it led me to an article about it in relation to allergic diseases in the Czech people, and one in relation to Parkinson’s disease in Taiwan

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Nitric oxide: a magic bullet against infection?

HAMBURG, GERMANY - JUNE 02:  A lab technician ...
Image by Getty Images via @daylife - Positive for infection

Nitric oxide (NO) is already known to block the growth of certain bacteria and protect the body against certain infections as well as keep some good substances from producing too much of themselves. Wow, a regular health watchdog.

Color-enhanced scanning electron micrograph sh...
Image via Wikipedia - Salmonella under the scope

“Nitric oxide is naturally produced in the nose and the gut and other tissues in the body to ward off infection,” says the author of the report on a new study. The study used salmonella to show that “nitric oxide’s antimicrobial actions are due to its interference with the metabolism, or energy production, of pathogens.” Inhibiting the bad guy’s ability to reproduce itself produces a condition called nitrosative stress—which starves the bad guys and is tough on bacteria but benign for the host organism.

It’s not exactly magic, but it might as well be, since it opens a new pathway for scientists. By “learning how the body naturally controls the energy supplies and growth of varied disease-causing organisms” they may be able to create antimicrobial drugs that perform similar actions and thus strengthen nature’s own natural defenses against infection. Read the article.

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Drugs improve health by delivering extra nitric oxide

“The Baptist” was the site of one of the first...
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As we’ve discussed in previous posts, nitric oxide is a “crucial biological mediator” that helps the body in a dozen different ways—from sexual performance enhancement to easing arthritis to potentially preventing or reversing atherosclerosis. So scientists have been searching for ways to improve the delivery of nitric oxide to critical systems when needed. In their efforts they’ve discovered what they call nitric oxide donor drugs, logically enough, since their main purpose seems to be to help the body generate more nitric oxide and use it more effectively.

Just read about a new such drug, naproxcinod, they’ve tested in comparison with placebo and naproxen, which is a standard NSAID for arthritis. Looks promising for treating the hip pain of osteoarthritis. Having been a hip replacement patient—and having spent more than 10 months in twice-a-week therapy trying to recover semi-normal activity levels—I can vouch for what a great thing it would be to be able to relieve that pain and keep from having that terribly invasive surgery. But of course my real hope for future hip-and-knee-pain-sufferers is that researchers will find a way—they’re already saying it’s promising—to use stem cells to regenerate lost cartilage in our joints. The big issue with that is getting the stem cells to differentiate into the three needed types of cells for cartilage, including the “scaffolding” that has the powerful weight-bearing capabilities of our natural cartilage.

What an amazing thing is the human body. I hope I’m around long enough to see these studies result in actually saving someone from a brutal hip replacement operation.

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Summer=watermelon=nitric oxide=lower blood pressure

Watermelons
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Yep. Eating watermelon boosts your nitric oxide which in turn lowers your blood pressure, according to this report.  It’s not that watermelon introduces NO directly into your body. Rather, your body converts into nitric oxide a substance watermelon has lots of, L-citrulline.

The Emory University professor says this juicy fruit is also full of lycopene, the antioxidant carotene that tomatoes have been bragging about for years now. Good to hear, I guess. ‘Cuz I always thought the watermelon my parents served us out in the yard some hot summer nights was just a big messy excuse for spitting stuff out—an activity normally proscribed by good manners.

Reminds me of the time I discovered a new nutritional fact about one of my favorite vegetables, green beans. I’d wondered for years what the hell made these little guys so tasty since I couldn’t find any listing showing they had any  significant quantities of any known-to-be-valuable vitamins or minerals. And then scientists discovered flavonoids—and wow, turns out green beans promote the production of NO and are really good for us. I’m guessing the same thing may happen one day with other foods that people love but for which scientists haven’t yet figured out redeeming nutritional values.

Potato chips
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I’m wishing potato chips would fall into that category one day.

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New marker for diagnosing heart failure

The illustration shows the major signs and sym...
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If you find yourself not being able to breathe very well—gasping or huffing and puffing on slight exertion or on lying down—your doctor can go down a number of different routes to find out what the problem is. Since I know from personal experience they don’t necessarily go down the right road, even when they keep reaching dead ends on the ones they do pursue, this could be a good thing for you to know yourself.

If you already know you have heart trouble, your doc will probably look down that route first. And now there’s a way for even your internist to tell if your troubled breathing might be due to congestive heart failure rather than to a respiratory or other issue. A simple blood test for BNP (B-type natriuretic peptide) can tell whether you have much higher levels than someone who’s breathing trouble is lung- or other-related. Any doctor can read the test–doesn’t have to be a cardiologist. And even happier, the BNP test can be done quickly–as in emergency room speed–so docs can treat for the right thing right away.

Earlier treatment can vastly improve quality of life and potentially extend a patient’s lifespan. It can also mean savings in treatment costs over the course of the condition. So it’s good news for hospitals as well as for patients.

Well, I guess it’s never too early to  learn the truth if docs can give you medications to ease the symptoms. Plus, it gives you more time to decide if there’s anything you want to get done before your number’s up.

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