Posts Tagged ‘D225N’

Swine Flu Update

By Ilene

Previous series of swine flu updates by me here.

Transmission of Fatal H1N1 D225G/N Accelerates Concerns

Ukraine takes measures to combat swine flu, closes all school - Kiev

Courtesy of Dr. Henry Niman, Recombinomics Commentary

Recently released H1N1 HA sequences have significantly accelerated pandemic concerns.  These sequences have either D225G, D225N, or both and produce a case fatality rate at or near 100% in many countries…. 

By the 100% fatality rate, Dr. Niman means that they are finding these changes in the tested fatal cases in some countries.  Keep in mind, these are small numbers of cases.  It does not mean that all cases with these changes prove fatal.  It might be more clear to say a large portion of the fatal cases show these changes in the infecting viruses.

[the] transmission and expansion of these fatal sequences in eastern Europe, including Russia have increased concerns, as has the "low reactor" status as determined by Mill Hill for a tested Ukraine sequence.

Some of the earliest sequences with D225G were in the United States last spring and were generally mild.  However, initial cases in the US were generally mild, which may have reflected low  viral loads infecting a naïve population…

"Low reactors" status means that the virus is not triggering the immune response expected due to changes in the structure of certain viral proteins (here, the influenza hemagglutinin proteins).  Immune responses target specific proteins and the target proteins’ structure is critical to the immune response.  Not all changes in a protein will greatly reduce its immunogenicity (ability to stimulate the immune response) but certain changes will.  The change from the wild-type (common) HA protein to the HA protein with the D225G marker appears to have this adverse effect--i.e., the altered viruses will not provoke the stronger immune response generated in response to the wild-type virus and/or the swine flu vaccine.   

These observations are cause for concern, not alarm.  The changes in the H1N1 virus are natural and predictable; Dr. Niman predicted these changes would occur.  

There already was interest in position 225 for a number of reasons.  D225N  was in seasonal H3N2 and linked to the fixing [establishment of widespread] of adamantine resistance (S31N), while D225G was in 1918 and 1919 samples and linked to a change in receptor binding domain specificities which would target subsets of cells in the lung.  In addition, the polymorphism [genetic change] was jumping from one genetic background to


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Flu News

Here’s the latest by Dr. Henry Niman. I’ve made a few helpful comments in red. – Ilene

D225E and D225N H1N1 RBD Changes in Turkey

Courtesy of Henry Niman, PhD

Swine flu virus, showing the structure of the virion: the outer proteins hemagglutinin and

Recombinomics Commentary
January 5, 2010

The Refik Saydam National Public Health Agency has released 29 HA [hemagglutinin] sequences from Ankara, Turkey. Several were partial sequences, but 26 covered the receptor binding domain and 8 had D225E,… while one had D225N,… 

My comment:  D225 is the most common or wild-type receptor binding protein - the hemagglutinin (HA) protein – which enables the virus to bind to tissues in the respiratory tract of infected people. 

A change in the amino acid in position 225 of the receptor binding domain (RBD) is symbolized by using the letter representing the new amino acid, e.g. "G" for glycine in "D225G." The marker D225G signifies that a glycine (G) is present in the 225 position, replacing the amino acid usually in this position, aspartic acid, or D (hence the wild-type marker is "D225"). Glutamic acid, E, and asparagine, N, are two other amino acids that have been found in this position in non-wild-type swine flu viruses.

The change in the receptor binding protein from D to G alters the protein’s preference for binding to human tissues. Viruses with the D225G marker bind in the lung tissue, rather than binding in the upper respiratory tract (nasal area and throat), the more typical target. This appears to result in more severe disesase which may trigger a "cytokine storm" reaction in the lungs.  Whether substitution with "E" or "N" causes similar changes is not known. Theoretically, if the immune response is generated against the wild-type protein D225, viruses with D225G, D225E or D225N markers might avoid the immune system’s response. 

[Back to Dr. Niman] The outcomes of these patients were not given but media reports have described a rapid in increase in H1N1 fatalities in Turkey.  A large number of HA sequences with D225E has been published from Spain, and recently released GISAID sequences from Sweden and the UK also have D225E, including three fatal cases from Sweden. The prior reports of D225G and D225N associations with fatal cases has raised concerns that changes at position 225 could alter tissue tropism or aid in immune escape, leading to more severe and fatal cases.

In…
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H1N1 Update

H1N1 Update:  Watching and Waiting  

by Ilene with guest expert Dr. Henry Niman at Recombinomics

EM of swine influenza (H1N1) virus particles (virions), determined to be the cause of the

Watching and Waiting

Although the numbers of new cases of swine flu have been declining in many regions, including the United States, it is too early to know whether or not there will be subsequent waves of disease.

"Based on my experience with new diseases and the lessons learned from past pandemics, I think we should remain cautious and observe the evolution of the pandemic over the next six to 12 months before declaring victory," World Health Organization Director General Margaret Chan tells Swiss newspaper Le Temps. (World Health Official Says Swine Flu Still a Threat)

Although the WHO is taking a cautious approach, changes in the virus’s genome that increase its virulence and resistance to Tamiflu are becoming more common.  Dr. Henry Niman, expert in flu virus evolution, believes another wave of flu illnesses will occur in early 2010.  In addition, he believes resistance to Tamiflu will become "fixed," similarly to how this genetic change evolved in the seasonal H1N1 virus.  (See Flu Update: Tamiflu resistance and Ukraine update, and Efficacy of Roche’s Flu Drug Tamiflu In Doubt, by David Phillips.)

WHO: H1N1 swine flu pandemic will stick around for another year

The World Health Organization warned government health authorities to remain vigilant on the H1N1 swine flu pandemic, saying the virus could mutate before vaccines can help it dissipate.

The World Health Organization is confident that the H1N1 swine flu pandemic will be under control in a year’s time – however, WHO officials warned global governments to remain vigilant for any mutations in the troublesome bug.

Dr. Niman believes this wave will be more severe than the previous two--but not due to random mutations. Rather, this will result from the process of recombination. Due to recombination, increasingly greater transmission of aggressive variants (D225G, D225E and D225N) and Tamiflu-resistant viruses will occur.

Ukraine

I’ve reprinted two recent articles at Recombinomics, with my comments in blue.

The WHO Surprise on D225G / D225N H1N1 Fatalities, Recombinomics Commentary

After considering the current available virological, epidemiological and clinical findings and following discussions on an earlier draft with WHO and its European-based Collaborating Centre ECDC has come to a preliminary formulation namely that the G222D/N


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Phil's Favorites

Partisan divide creates different Americas, separate lives

 

Partisan divide creates different Americas, separate lives

Even in the physical world, it’s hard to cross partisan lines. igorstevanovic/Shutterstock.com

Courtesy of Robert B. Talisse, Vanderbilt University

When people try to explain why the United States is so politically polarized now, they frequently refer to the concept of &ldq...



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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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Zero Hedge

Blain: "It's A Bad Week For The Credibility Of Mohammed bin Salman"

Courtesy of ZeroHedge View original post here.

Blain's Morning Porrdige, submitted by Bill Blain of Shard Capital

Saudi….

Its turning into a bad week for the credibility of Mohammed bin Salman, the defacto ruler of Saudi.  After the Globe’s third largest defence spending state was crippled by supposedly unsophisticated Houthi rebels (with some likely assistance from Iran) when they struck his oil infrastructure, this morning the headlines are all about how MBS is now arm-twisting rich Saudi’s to buy into the discredited Aramco IPO. 

In...



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The Technical Traders

Precious Metals Setting Up Another Momentum Base/Bottom

Courtesy of Technical Traders

Just as we predicted, precious metals are setting up another extended momentum base/bottom that appears to be aligning
with our prediction of an early October 2019 new upside price leg.

Recent news of the US Fed decreasing the Fed Funds Rate by 25bp as well as strength in the US stock market and US Dollar as eased fears and concerns across the global markets.  These concerns and fears are still very real as the overnight credit market has continue to illustrate.  Yet, the precious metals have retraced from recent highs and begun to form a momentum base which will likely become the
floor for the next move higher.

The one aspect that many traders ...



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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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Lee's Free Thinking

Federal Reserve Bank of New York Statement On Repurchase Operation - Roll Over Beethoven!

Courtesy of Lee Adler

This is a syndicated repost courtesy of NY | Press Releases. Original: Statement Regarding Repurchase Operation. Reposted with permission. 

September 19, 2019

In accordance with the FOMC Directive issued September 18, 2019, the Open Market Trading Desk (the Desk) at the Federal Reserve Bank of New York will conduct an overnight repurchase agreement (repo) operation from 8:15 AM ET to 8:30 AM ET tomorrow, Friday, September 20, 2019, in order to help maintain the federal funds rate within the target range of 1-3/4 to 2 percent.

This repo operation will be conducted w...



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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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Digital Currencies

China Crypto Miners Wiped Out By Flood; Bitcoin Hash Rate Hits ATHs

Courtesy of ZeroHedge View original post here.

Last week, a devastating rainstorm in China's Sichuan province triggered mudslides, forcing local hydropower plants and cryptocurrency miners to halt operations, reported CoinDesk.

Torrential rains flooded some parts of Sichuan's mountainous Aba prefecture last Monday, with mudslides seen across 17 counties in the area, according to local government posts on Weibo. 

One of the worst-hit areas was Wenchuan county, ...



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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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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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