| |
Ionic Contraviral Therapy- ICVT
Herpes And Dysplastic Diseases
Herpes simplex infections of the skin
Herpes simplex infection of the skin is responsible for
considerable disease burden on mankind. Typically, herpes
simplex type 1 (HSV1) will cause infection of the mouth or
oral mucosa, whilst herpes simplex type 2 (HSV2) typically
causes genital herpes.
Genital Herpes
Genital herpes is very common and its incidence is growing
rapidly, with seroprevalance (the number of people who have
antibodies in their blood )of herpes simplex type 2 infection
growing from 16.7% of the US adult population in 1978, to
21.7% in 1991. (NAHNES study 1997), There are over 45 million
Americans chronically infected and at least 100 million
genital outbreaks annually.
In Scandinavia the seroprevalence of HSV 2 infection among
pregnant women nearly doubled over the last two decades from
19% to 33%
Genital herpes is the most common ulcerative sexually
transmitted disease in America, and its prevalence has been
increasing continually over the last 20 years. The American
Social Health Association (ASHA) has a free telephone advice
service, and they report more calls regarding genital herpes
than all other sexually transmitted infections combined. ASHA
has estimated that there are in fact 1 million new cases of
infection per year.
Cold Sores
According to the WHO the current seroprevalence of HSV 1
globally in adults is approx 70-80%, leading to at least 400
million cold sores annually.
The seroprevalence is currently increasing at 3% per year.
42% of sufferers of HSV1 (cold sores) will have an outbreak in
a year (IHMF).
89% of sufferers of HSV 2 (genital herpes) will have an
outbreak in a year (IHMF).
Consequently a significant market exists for treatments
targeted at herpes diseases. In several in-house studies ICVT
has demonstrated considerable efficacy when targeted at herpes
simplex, including strains that are highly resistant to
existing forms of therapy. Studies are on-going to examine
formulations of ICVT as a topical treatment for herpes simplex
infections of the skin and genitalia.
Dysplastic Disease
When a cell is infected by HPV, (depending upon the strain of
virus), changes may occur in the cell that have the potential
to lead to cancer. In most cases, cancerous changes are not
immediate (or indeed certain) - they take months or years to
develop. The cells may change from a normal cell into an
intermediate cell which although not strictly cancerous, has
the potential to become cancerous if left untreated. This type
of change is called dysplasia, and is commonly associated with
HPV infection of the genital tract. The site at which the
dysplasia occurs will determine the site of where treatment is
needed.
Cervical intraepithelial neoplasia (CIN)
CIN is a pre-cancerous condition of the uterine cervix. This
starts with abnormal cellular development in the epithelium of
the cervix and is diagnosed by the PAP smear test. Over 95% of
CIN is caused by infection with HPV. More than 2.5 million
women are diagnosed with low grade CIN and a further
200,000-300,000 are diagnosed with high grade dysplasia each
year in the USA alone. Worldwide the incidence is much higher.
(WHO figures)Current treatment of CIN is limited to local
surgical techniques such as laser ablation, cryotherapy and
cone biopsy. These do not address the underlying infectious
cause.
Vulval Intraepithelial Neoplasia (VIN)
The HPV type 16 is involved in the development of vulval
carcinoma in women. The precursor to this is the development
of abnormal cells, which often cause symptoms of irritation or
soreness. In the past the peak incidence of VIN affected women
in their mid 50s, whilst in the last decade, the peak age is
now 38 years. The incidence has increased 300% in the last 10
years (Journ EA 2001).
Anal Intraepithelial Neoplasia
HPV can also reside in the anus, which has similar epithelial
cells to the cervix, and is a precursor to cancer of the anus.
More than 60% of men without HIV and 90% of men with HIV who
have sex with men, are infected with HPV in their anal canal.
The only current treatment options are surgical as there is no
effective pharmacological treatment available.
Vaginal intraepithelial neoplasia (VAIN)
VAIN comprises about 4% of intraepithelial neoplasias and
occurs in between 0.9 and 6.8% of cases following
hysterectomies -- with a higher incidence following surgery
and radiation therapy for pre-malignant and malignant lesions
of the cervix.
28% of VAIN cases have been reported to occur after
hysterectomy for benign disease. Appropriate colposcopic
assessment is necessary for diagnosis. The disease is highly
associated with papilloma virus infection and may result in
carcinoma of the vagina if untreated.
ICVT has the potential to be helpful in the treatment of early
stages of VIN, AIN, and PIN, as it is anticipated that the HPV
implicated as the cause of these lesions would be halted.
Studies are being planned to examine these effects, by one of
Henderson Morleys partner companies.
Next:
Recurrent Respiratory Papilloma
|
|