The Treatment of H5N1 Avian Influenza Report: Released by Aethlon Medical
(MAR. 30,2006)
Aethlon Medical, Inc. (OTCBB:AEMD),
a pioneer in developing therapeutic devices for infectious
disease, disclosed this afternoon that Chairman and CEO,
James A. Joyce, has authored a report entitled; The
Treatment of H5N1 Avian Influenza. The content of the report
follows:
Summary
The intent of this paper is to analyze how current options
for treating H5N1 Avian Flu infection may influence the
commercialization of the Aethlon Hemopurifier(TM), a
therapeutic device targeted to modulate the immune response
and capture circulating H5N1 virus. In the face of an
accelerating pandemic, the present void in effective H5N1
treatments may dictate that the Hemopurifier(TM), initially
proposed as a treatment for drug resistant patients, evolves
into an important first-line treatment role. Mounting
evidence explaining why H5N1 is often fatal to those
infected with the virus reinforces the opportunity of the
Hemopurifier(TM) as an essential weapon in the treatment
arsenal against Avian Flu.
The Threat
Scientists are increasingly worried that the H5N1 strain of
Avian Flu will mutate into a form easily passed between
humans, triggering a global pandemic. It already is
unprecedented as an animal illness in its rapid expansion,
and has cost 300 million farmers more than $10 billion
during its initial spread through poultry around the world.
World Health Organization (WHO) officials claim the H5N1
strain of Avian Flu poses a greater challenge to the world
than any other infectious disease, including AIDS. WHO
officials confirm that 101 of 180 people have died H5N1
infection as of March 15(h), 2006.
In the face of such dire news, researchers are unraveling
the mystery of why the H5N1 strain of the Avian Flu virus is
so lethal. It appears that H5N1 hyper-activates the immune
response, a frightening trait inherent in the worst pandemic
killer known to man, the Spanish Flu of 1918, which caused
the deaths of over 40 million people. To provide
perspective, it has taken 25 years for AIDS related deaths
to rise to such levels. In the case of H5N1 infection, viral
sepsis leading to major organ failure is often the cause of
death. This is triggered when the immune system
over-responds to infection by releasing a cascade of
inflammatory cells and chemicals in what is known as a
"Cytokine Storm". As a result, the likelihood of death in
individuals with robust immune systems equals or exceeds the
immune compromised who are normally most susceptible to
regular seasonal flu strains. Unfortunately, antiviral drugs
are unable to shut off a cytokine storm once it has been
triggered.
Current Treatments
Antiviral drugs being stockpiled as part of a global
strategy to treat Avian Flu have no therapeutic value once
the cytokine storm has been triggered. At present, only one
antiviral, oseltamivir (Tamiflu) is known to offer some
level of effectiveness against the H5N1 strain of Avian Flu.
However, Tamiflu is indicated as a treatment for normal
household varieties of influenza if administered within 48
hours of first symptoms. The treatment window for an
ultra-virulent H5N1 strain is likely to narrow considerably.
Reports already indicate the potency of Tamiflu against the
avian flu virus is reduced, even when taken after 24 hours
of the first symptoms of the disease. H5N1 resistance to
Tamiflu is already being reported in Southeast Asia.
Prolonged incubation combined with a short antiviral
treatment window also concerns researchers. Dr. Tim Uyeki, a
medical epidemiologist with the influenza branch of the
Centers for Disease Control and Prevention (CDC) quoted the
following to the Wall Street Journal; "Patients aren't
presenting (symptoms) early in the illness. If the cytokine
storm has already been triggered, antiviral drugs aren't
going to turn it off."
A successful global strategy against H5N1 will, at a
minimum, have to rely on therapeutics that can modulate the
overproduction of cytokines. The March 2, 2006 issue of The
Lancet reported that researchers at the well-regarded
Karolinska Institute in Stockholm are proposing the use of
chemotherapy to kill off excess immune cells as a means to
curb the cytokine storm leading to viral sepsis in H5N1
patients. While the concept may seem radical, researchers
are likely to agree that any treatment able to damp down the
immune system might be helpful. Unfortunately, taming the
immune system without destroying defenses against infection
has yet to be demonstrated with drugs.
Until other treatments surface, health officials from the
United States and other nations continue a strategy of
stockpiling Tamiflu. To date, the Department of Health and
Human Services (HHS) has ordered 12.4 million doses of
Tamiflu, and expects to have a stockpile of 20 million doses
by the end of 2006. Adjunctive antiviral therapies able to
increase Tamiflu effectiveness will need to surface if these
stockpiles are to offer any hope of widespread benefit.
Regardless, the effectiveness of Tamiflu and other antiviral
drugs ends once the cytokine cascade is triggered.
The Hemopurifier(TM) to Treat Avian Flu
The Hemopurifier(TM) is presently the only proposed
treatment for H5N1 Avian Flu that simultaneously targets the
clearance of H5N1 and the modulation of the cytokine storm.
The deployment of the Hemopurifier(TM) as a treatment for
Avian Flu is consistent with a corporate strategy to evolve
the Hemopurifier as a broad-spectrum treatment for drug and
vaccine resistant pathogens. In this context, the
Hemopurifier(TM) was recently awarded the 2006 Technology
Innovation Award by global industry researcher, Frost &
Sullivan. Specific to H5N1 infection, the Hemopurifier(TM)
represents a novel extracorporeal method to mimic and boost
the immune response, which should improve the effectiveness
of antiviral drugs when deployed as an adjunctive therapy.
Once a cytokine storm has been triggered, the Hemopurifier
could serve as the first and perhaps only option for
treating H5N1 infected patients. Attributes and
considerations for deploying the Hemopurifier(TM) as a
treatment for pandemic flu, include:
1. Rapid Clearance of H5N1 - The affinity agents immobilized
within the Hemopurifier(TM) have broad-spectrum capabilities
to
capture envelope viruses by binding to glycosolated proteins
that reside on their surface. In the case of H5N1, the virus
capture is directed at two major surface glycoproteins, the
hemagglutinin (HA) and neuraminidase (NA), which are
available
binding sites, even in the case of viral mutation. As
compared
to normal influenza, longer periods of incubation and
accessibility to circulating virus appear to be the norm in
H5N1 infection. The ability to clear H5N1 virus and viral
fragments prior to cell and organ infection, would decrease
cytokine production, inhibit disease progression, and
improve
the effectiveness of Tamiflu and other antiviral drugs.
2. Broad Clearance of Cytokines - The structure of the
Hemopurifier(TM) vastly improves the potential to clear the
full spectrum of deleterious cytokines, as compared to
Hemofiltration techniques indicated as an adjunct treatment
for
cytokine induced sepsis since 1990. In fact, the
Hemopurifier(TM) may be an ideal method to modulate cytokine
production, as the pores of the Hemopurifier(TM) fibers are
large enough to allow both cytokines and cytokine
aggregates,
unable to be cleared in Hemofiltration, to be separated and
captured from circulation. Non-human studies to document the
capture of cytokines, prevalent in autopsy reports of H5N1
induced deaths, have been initiated by Aethlon researchers.
3. Expedited Regulatory Path - Under the Bioterrorism Act of
2002,
pandemic flu therapies can be developed and financed by the
Project BioShield Act. The guidelines require clinical
trials
to only demonstrate safety in man, as traditional efficacy
studies are not plausible or ethical in the case with
pathogenic influenza. Thus, the FDA is permitted to accept
efficacy data from animal models related to drug and vaccine
submissions. In the absence of an animal model, the
Hemopurifier(TM) is positioned to demonstrate the capture of
viruses and cytokines from human blood through closed loop
studies that replicate human treatment. An Avian Flu
Industry
Report published by Griffin Securities, suggests that these
regulatory provisions not only provide an accelerated path
to
approval, but could also provide government funding for
stockpiling, representing large commercial opportunities for
companies developing Avian Flu therapies.
4. Human Safety Observations - H5N1 Avian Flu is not a call
to
arms to initiate drug and vaccine research programs. It's a
siren to deliver therapeutics that are in late stage
development and can be delivered to market. The proposed
treatment of H5N1 with the Aethlon Hemopurifier(TM) would be
based on treatment protocols already established in a human
safety study currently being administered to renal failure
patients co-infected with the Hepatitis-C virus. To date, no
material adverse events have been observed in these
patients.
Upon completion of this study, Aethlon will submit the
safety
data as part of regulatory submissions to the Food and Drug
Administration (FDA) in an effort to pursue the treatment of
H5N1 Avian Flu and other drug and vaccine resistant viral
conditions. The Company may also seek to commercialize the
Hemopurifier(TM) through regulatory agencies outside of the
United States.
In closing, the ominous threat of an H5N1 pandemic; the
absence of a vaccine; an evolving resistance to a single
drug option; and, a post-infection immune response that
triggers a highly fatal cytokine storm; provides
organizations with innovative therapeutics, the opportunity
to demonstrate effectiveness on a global stage. Those who
execute and deliver therapeutics to the market will play an
important role in saving the lives of individuals infected
with H5N1 pandemic influenza.
About Aethlon Medical
Aethlon Medical is developing the first medical device to
treat infectious disease. The device, known as the
Hemopurifier(TM), is a broad-spectrum treatment
countermeasure against drug and vaccine resistant bioweapons,
naturally evolving pandemic threats such as H5N1 Avian Flu,
and chronic infectious disease targets including Hepatitis-C
(HCV) and the Human Immunodeficiency Virus (HIV). Aethlon
has also initiated research on a second generation
Hemopurifier(TM) that targets the capture of growth factors
inherent in the spread of Cancer. More information on
Aethlon Medical and the Hemopurifier(TM) technology can be
found at www.aethlonmedical.com.
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