Posts Tagged ‘stem cells’

High doses of antioxidant supplements induce stem cell genetic abnormalities

This is interesting, and important if you’re taking lots of supplements thinking that the more antioxidants you take, the longer you’ll live. Research is providing plenty of evidence that it doesn’t work so simply, while supplements fail to act according to the logical prevailing theory. Here’s another piece. – Ilene  

High doses of antioxidant supplements induce stem cell genetic abnormalities

Spoonful of dietary supplements

Courtesy of David Granovsky, in SCIENCE & STEM CELLS 

High doses of antioxidant supplements induce stem cell genetic abnormalities

High doses of antioxidant nutritional supplements, such as vitamins C and E, can increase genetic abnormalities in cells, which may predispose supplement-takers to developing cancer, according to a new study from the Cedars-Sinai Heart Institute.

The study, led by Eduardo Marbán, M.D., Ph.D., director of the Cedars-Sinai Heart Institute, was published online today in the medical journal Stem Cells. The study also will appear in the journal’s July printed edition.

Marbán and his team accidentally discovered the danger of excessive antioxidant doses while seeking a way to reduce the genetic abnormalities that occurred naturally when the scientists sought to multiply human cardiac stem cells.

Marbán stressed that the study’s finding applies only to excessive  and not to foods that are rich in antioxidants, such as milk, oranges, blueberries and peanuts. In recent years, multiple studies have touted the benefits of foods rich in antioxidants.

“Taking one multivitamin daily is fine, but a lot of people take way too much because they think if a little is good, a lot must be better,” said Marbán, who is also the Mark Siegel Family Professor at Cedars-Sinai. “That is just not the case. If you are taking 10 or 100 times the amount in a daily multivitamin, you may be predisposing your cells to developing cancer, therefore doing yourself more harm than good.”

In laboratories, stem cells are often grown in a Petri dish culture than is composed of 20 percent oxygen, whereas cells growing inside human tissue are exposed to just 3 to 5 percent oxygen. But Marbán’s team of researchers became frustrated because the higher concentration of oxygen in lab-grown stem cells resulted in 9 percent of the cells being rejected because of genetic abnormalities.

“We sought to counter that oxidation problem by adding high doses of antioxidants directly to
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A Stem-Cell Discovery Could Help Diabetics

A Stem-Cell Discovery Could Help Diabetics

By Alice Park, courtesy of TIME

Human-induced pluripotent stem cells
Human-induced pluripotent stem cells appear
Shinya Yamanaka / AP

Researchers are inching ever closer to bringing the latest stem-cell technologies from bench to bedside — and are, in the process, learning more about some diseases that long have remained medical black boxes.

This week, scientists at the Harvard Stem Cell Institute (HSCI) reported the first success in generating new populations of insulin-producing cells using skin cells of Type 1 diabetes patients. The achievement involved the newer embryo-free technique for generating stem cells, and marked the first step toward building a treatment that could one day replace a patient’s faulty insulin-making cells with healthy, functioning ones.

The experiment, published in the Proceedings of the National Academy of Sciences, also provided the first good model — in a petri dish — of how Type 1 diabetes develops, giving scientists a peek at what goes wrong in patients affected by the disease. Such knowledge could lead to not only new stem-cell-based treatments, but also novel drug therapies that might improve the symptoms of the disease.

Douglas Melton, co-director of HSCI, and his team took skin cells from two Type 1 diabetes patients, exposed the cells to a cocktail of three genes that converted them back to an embryonic state — which are referred to as pluripotent stem cells — then instructed the newly reborn cells to grow into beta cells, the cells in the pancreas that secrete insulin. In Type 1 diabetes, these beta cells no longer work to break down the glucose that floods the body after each meal, leading to blood-sugar spikes that can damage the kidneys and heart.

To test whether their lab-made cells could function like normal beta cells, Melton’s group exposed them to glucose in a dish. When sugar levels were high, the cells produced more of a protein that beta cells release when they break down sugar; when glucose levels were low, the protein levels were low as well.

"These cells represent the newest model of diabetes for humans," says Melton. "We have a lot of good models of Type 1 diabetes in the mouse, but everything that we have learned from them has failed in the clinic. Now we have a chance at figuring out how humans get the disease."…
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Phil's Favorites

Buyer beware: How Libra differs from Bitcoin

 

Buyer beware: How Libra differs from Bitcoin

Recent revelations about the lack of privacy protections in place at the companies involved in Facebook’s new Libra crytocurrency raise concerns about how much trust users can place in Libra. (Shutterstock)

Courtesy of Alfred Lehar, University of Calgary

Facebook, the largest social network in the world, stunned the world earlier this year with the announcement of its own cryptocurrency, Libra.

The launch has raised questions about the difference between Libra and existing cryptocurrencies, as well as the implications of private companies competing with s...



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Digital Currencies

Buyer beware: How Libra differs from Bitcoin

 

Buyer beware: How Libra differs from Bitcoin

Recent revelations about the lack of privacy protections in place at the companies involved in Facebook’s new Libra crytocurrency raise concerns about how much trust users can place in Libra. (Shutterstock)

Courtesy of Alfred Lehar, University of Calgary

Facebook, the largest social network in the world, stunned the world earlier this year with the announcement of its own cryptocurrency, Libra.

The launch has raised questions about the difference between Libra and existing cryptocurrencies, as well as the implications of private companies competing with s...



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Zero Hedge

What's Hot In Women's Fashion?

Courtesy of ZeroHedge View original post here.

Via Global Macro Monitor,

Capitalism at its best or worst?

We have a few questions:

1)  Does the Tariff Man get a royalty for the sale of each dress sold, and will that violate the Emolumen...



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Lee's Free Thinking

Look Out Bears! Fed New QE Now Up to $165 Billion

Courtesy of Lee Adler

I have been warning for months that the Fed would need new QE to counter the impact of massive waves of Treasury supply. I thought that that would come later, rather than sooner. Sorry folks, wrong about that. The NY Fed announced another round of new TOMO (Temporary Open Market Operations) today.

In addition to the $75 billion in overnight repos that the Fed issued and has been rolling over since Tuesday, next week the Fed will issue another $90 billion. They’ll come in the form of three $30 billion, 14 day repos to be offered next week.

That brings the new Fed QE to a total of $165 billion. Even in the worst days of the financial crisis, I can’t remember the Fed ballooning its balance sheet by $165 bi...



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The Technical Traders

Is A Price Revaluation Event About To Happen?

Courtesy of Technical Traders

Skilled technical traders must be aware that price is setting up for a breakout or breakdown event with recent Doji, Hammer
and other narrow range price bars.  These types of Japanese Candlestick patterns are warnings that price is coiling into
a tight range and the more we see them in a series, the more likely price is building up some type of explosive price breakout/breakdown move in the near future.  The ES (S&P 500 E-mini futures) chart is a perfect example of these types of price bars on the Daily chart (see below).

Tri-Star Tops, Three River Evening Star patterns, Hammers/Hangmen and Dojis are all very common near extreme price peaks and troughs.  The rea...



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Kimble Charting Solutions

India About To Experience Major Strength? Possible Says Joe Friday

Courtesy of Chris Kimble

If one invested in the India ETF (INDA) back in January of 2012, your total 7-year return would be 24%. During the same time frame, the S&P 500 made 124%. The 7-year spread between the two is a large 100%!

Are things about to improve for the INDA ETF and could it be time for the relative weakness to change? Possible!

This chart looks at the INDA/SPX ratio since early 2012. The ratio continues to be in a major downtrend.

The ratio hit a 7-year low a few months ago and this week it kissed those lows again at (1). The ratio near weeks end is attempting to...



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Insider Scoop

10 Biggest Price Target Changes For Friday

Courtesy of Benzinga

  • Credit Suisse raised IHS Markit Ltd (NYSE: INFO) price target from $68 to $76. IHS Markit shares closed at $67.75 on Thursday.
  • Wedbush boosted Restoration Hardware Holdings, Inc (NYSE: RH) price target from $170 to $185. RH shares closed at $169.49 on Thursday.
  • Mizuho lifted Seagate Technology PLC (NASDAQ: STX) price target from $46 to $50. Seagate shares closed at $52.94 on Thursday.
  • UBS raised the price target for Weight Watchers Intern...


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Chart School

Crude Oil Cycle Bottom aligns with Saudi Oil Attack

Courtesy of Read the Ticker

Do the cycles know? Funny how cycle lows attract the need for higher prices, no matter what the news is!

These are the questions before markets on on Monday 16th Aug 2019:

1) A much higher oil price in quick time can not be tolerated by the consumer, as it gives birth to much higher inflation and a tax on the average Joe disposable income. This is recessionary pressure.

2) With (1) above the real issue will be the higher interest rate and US dollar effect on the SP500 near all time highs.

3) A moderately higher oil price is likely to be absorbed and be bullish as it creates income for struggling energy companies and the inflation shock may be muted. 

We shall see. 

...

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Biotech

The Big Pharma Takeover of Medical Cannabis

Reminder: We are available to chat with Members, comments are found below each post.

 

The Big Pharma Takeover of Medical Cannabis

Courtesy of  , Visual Capitalist

The Big Pharma Takeover of Medical Cannabis

As evidence of cannabis’ many benefits mounts, so does the interest from the global pharmaceutical industry, known as Big Pharma. The entrance of such behemoths will radically transform the cannabis industry—once heavily stigmatized, it is now a potentially game-changing source of growth for countless co...



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Mapping The Market

How IPOs Are Priced

Via Jean Luc 

Funny but probably true:

...

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Members' Corner

Despacito - How to Make Money the Old-Fashioned Way - SLOWLY!

Are you ready to retire?  

For most people, the purpose of investing is to build up enough wealth to allow you to retire.  In general, that's usually enough money to reliably generate a year's worth of your average income, each year into your retirement so that that, plus you Social Security, should be enough to pay your bills without having to draw down on your principle.

Unfortunately, as the last decade has shown us, we can't count on bonds to pay us more than 3% and the average return from the stock market over the past 20 years has been erratic - to say the least - with 4 negative years (2000, 2001, 2002 and 2008) and 14 positives, though mostly in the 10% range on the positives.  A string of losses like we had from 2000-02 could easily wipe out a decades worth of gains.

Still, the stock market has been better over the last 10 (7%) an...



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Promotions

Free eBook - "My Top Strategies for 2017"

 

 

Here's a free ebook for you to check out! 

Phil has a chapter in a newly-released eBook that we think you’ll enjoy.

In My Top Strategies for 2017, Phil's chapter is Secret Santa’s Inflation Hedges for 2017.

This chapter isn’t about risk or leverage. Phil present a few smart, practical ideas you can use as a hedge against inflation as well as hedging strategies designed to assist you in staying ahead of the markets.

Some other great content in this free eBook includes:

 

·       How 2017 Will Affect Oil, the US Dollar and the European Union

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About Phil:

Philip R. Davis is a founder Phil's Stock World, a stock and options trading site that teaches the art of options trading to newcomers and devises advanced strategies for expert traders...

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