|
Genital HPV infection is a sexually transmitted disease (STD)
that is caused by human papillomavirus (HPV). Human papillomavirus
is the name of a group of viruses that includes more than 100
different strains or types. More than 30 of these viruses are
sexually transmitted, and they can infect the genital area of
men and women including the skin of the penis, vulva (area outside
the vagina), or anus, and the linings of the vagina, cervix, or
rectum.
A human papillomavirus (HPV) test is done to find a high-risk
HPV infection in women. HPV is a sexually transmitted disease
(STD). An HPV test checks for the genetic material (DNA) of the
human papillomavirus. Like a Pap test, an HPV test is done on
a sample of cells collected from the cervix.
Most HPV infections are transient. A small, but still significant,
number of HPV infections progress to cervical cancer. HPV DNA
based detection methods can identify presence of the virus, but
they cannot identify oncogenic activity. It is the expression
of viral oncoproteins E6 and E7, affecting cell cycle control
that initiates the cervical cancer process. The detection of E6/E7
mRNA confirms the persistent expression of viral oncoproteins
in human cells.
Historically, HPV 18 has been regarded at high risk cancer associated
HPV Types 31 33 and 35 have been demonstrated to have an intermediate
association with cancer. This intermediate association is due
to the fact that these type of more frequently detected high grade
squamous intraepithelial lesions rather than the cancers. Detection
of any of the five HPV types (16, 18, 31, 33 and 45) will identify
most of the carcinoma cases worldwide.
Algorithm of HPV DNA Analysis used along with Cytology
An overview of the Eastern Biotech HPV DNA test and LBC
1. A single cervical sample is sufficient for analysis
2. High sensitivity
3. High Risk viral types screened: 16, 18, 31, 33, 35, 39, 45,
51, 52, 56, 58, 59, 66, 68
4. Low Risk viral types are also screened: 6, 11, 42, 43, 44/55
5. If one or more of the five subtypes (16, 18, 31, 33 or 45)
are positive, reflex testing by mRNA will be undertaken to detect
viral E6/E7 oncogene expression.
6. Determines the indications for Colposcopy
7. More immediate results than repeated cytology
8. Minimizes risk of false diagnosis' of Cervical Cancer
9. Predicts the risk of progression to a more severe disease
10. Results are free from observational error, giving you the
confidence to make a diagnosis that correlates accurately with
the corresponding Pap Smear.
|