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Most Promising Mucosal Adjuvant for Influenza

Source: Hemispherx Biopharma, Inc. http://www.globenewswire.com/newsroom/news.html?d=166653
Japanese National Institute of Infectious Diseases Scientists Identify Hemispherx Biopharma's Drug Technology as the "Most Promising Mucosal Adjuvant for Influenza"
Topical Application Also Affords Strong Cross-Protection Against Variant Flu Strains


PHILADELPHIA, June 4, 2009 (GLOBE NEWSWIRE) -- Hemispherx Biopharma (NYSE Amex:HEB) announced today that a new peer reviewed publication titled "Development of mucosal adjuvants for intranasal vaccine for H5N1 influenza viruses" was published in Therapeutics and Clinical Risk Management 2009:5 125-132. The article summarizes ongoing research in which researchers conclude that Poly I:PolyC12U (Ampligen(r)), an experimental therapeutic, is the "most promising adjuvant candidate for mucosal vaccines." Poly I:PolyC12U (Ampligen(r)), an experimental therapeutic, was also "extremely important" in these studies, in that it produced cross-protection against variant influenza viruses not seen with the vaccines given alone.

Mucosal immunity has many potential advantages (please see Nature Medicine, supplement article titled "Mucosal Immunity and Vaccines" Vol. 11, number 4, pp. S45-S53). These advantages include a better stimulation of natural immunity than conventionally applied vaccines (intramuscular injection). Since most infections affect or start from a mucosal surface, topical application is often required to induce a protective immune response. However, in practice, it is often difficult to stimulate a strong SIgA immune response by mucosal administration of antigens given alone. Injectable vaccines can also give severe local reactions and the magnitude/ duration of protection may be less by parenteral (needle) delivery than by the topical application described by the JIID researchers.

The conclusion of the JIID researchers is that a pandemic of new influenza virus seems possible, and because it will be difficult to know when a pandemic will occur (or which strain of virus will be the cause), it is in the global community's best interest to develop broadly effective and safe vaccines against influenza virus. Hence, in the need for development of a broadly effective vaccine, induction of mucosal immunity is an inevitable requirement, as mucosal secretory IgA plays an important role in cross protection. Vaccines designed to induce mucosal immunity are necessary, in the JIID view, to combat a new influenza pandemic.

Today, Hemispherx Biopharma is summarizing its new influenza prevention/treatment data at a special Symposium on Pandemic Influenza in Rome under auspices of the Italian Government, which will include an update on the Japanese collaborations.

-snip-

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I wonder if it is OK to post a company's announcement like this?


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SN1987A
 
Re: Most Promising Mucosal Adjuvant for Influenza

I wonder if it is OK to post a company's announcement like this?
Yes, as long as this is some informational content rather than just a sales pitch. It is also important to note that companies listed on stock exchanges are required to add a disclaimer to press releases and news announcements regarding "forward-looking statements". Below is the one from Hemispherx Biopharma, Inc. website. So some reference should be made that press releases are not necessarily unbiased.

Information contained on the Hemispherx website other than historical information, should be considered forward-looking and is subject to various risk factors and uncertainties. For instance, the strategies and operations of Hemispherx involve risks of competition, changing market conditions, changes in laws and regulations affecting these industries and numerous other factors discussed on the Hemispherx website and in the Company's filings with the Securities and Exchange Commission. Accordingly, actual results may differ materially from those in any forward-looking statements. Additionally, all the referenced investigational drugs and associated technologies of the company are experimental in nature and as such are not designated safe and effective by a regulatory authority for general use and are legally available only through clinical trials with the referenced disorders. The forward-looking statements represent the Company's judgment as of the date of this website. The Company disclaims, however, any intent or obligation to update these forward-looking statements.
http://www.hemispherx.net/
 
Re: Most Promising Mucosal Adjuvant for Influenza

Ampligen has been around for a while. Studies I've seen:

Cross-protection against H5N1 influenza virus infection is afforded by intranasal inoculation with seasonal trivalent inactivated influenza vaccine.
CONCLUSIONS:
Intranasal inoculation with annual influenza vaccine plus the Toll-like receptor-3 agonist, poly(I):poly(C(12)U), may overcome the problem of a limited supply of H5N1 virus vaccine by providing cross-protective mucosal immunity against H5N1 viruses with pandemic potential.
PubMed http://tinyurl.com/qwx2tj
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Intranasal immunization with H5N1 vaccine plus Poly I:Poly C12U, a Toll-like receptor agonist, protects mice against homologous and heterologous virus challenge.
Intranasal administration of a candidate influenza vaccine with Ampligen resulted in secretion of IgA, and protected mice that were subsequently challenged with homologous A/Vietnam/1194/2004 and heterologous A/HK/483/97 and A/Indonesia/6/2005 virus.
PubMed http://tinyurl.com/op2bc2
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I have a small collection of articles (plus the abstracts) over at gs's forum:
http://www.setbb.com/phpbb/viewtopic.php?t=743&mforum=fluwiki2
 
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