No abstract available.
Human papillomavirus 16 ; Vaccination

Study on the incidence rate of cervical cancer on 1.122 women aged from 15 to 69 years old were interviewed and had a gynaecological examination in an urban district of HoChiMinh city. HPV DNA detection was performed using a GP5+/6+ primer-mediated PCR enzyme immunoassay. IgG antibodies against herpes simplex virus (HSV-2) were determined in blood samples using an ELISA assay. The results showed that: HPV DNA was detected among 10.9% of women in HoChiMinh city. 28 different HPV types were detected, the most common being HPV 16 (in 14 single and 18 multiple infections), followed by HPV 58, 18 and 56. A peak of HPV DNA detection in women below age 25 was found. Major risk factors for HPV DNA detection in the multivariate analyses were: indicators of sexual habits, most notably the presence of HSV-2 antibodies, nulliparity and the current use of oral contraceptives
Human papillomavirus 16 ; Human papillomavirus 18 ; epidemiology ; women

Objective: To determine the prevalence of HPV high risk positivity among women patients ages 30 to 65 with biopsyproven external genital warts (condyloma acuminata) specifically for HPV 16, HPV 18, and for other high risk types 31, 33, 35, 39, 45, 51, 52, 56, 58, 59, 66/68, 73, and 82. Methodology: A cross-sectional study was conducted at the Department of Obstetrics and Gynecology Out-Patient Services of the Philippine General Hospital involving 57 women, 30 to 65 years old, with biopsy proven external genital warts or condyloma acuminata. These women underwent human papillomavirus (HPV) genotyping test for the high risk types (HR-HPV) from cervical samples using the automated polymerase chain reaction (PCR) technology. Results: Fifteen out the 57 subjects had at least one of the HR-HPV types for an overall prevalence of 26.3%. Of the 15, 8 (53.3%) had at least 2 HR-HPV types with one subject having the most number of types at 6. Among the strains, the most common is HPV 51 and 52 each with a prevalence of 8.77% followed by HPV 53 and 59 at 7% each. HPV 16 and 18 each only had a 3.5% prevalence the same as HPV 58, 73, and 82. HR-HPV positivity was most common in the 30 to 39 age group (80%), and equally in the nulligravid and the secundigravid (40% each). None had current or past cigarettesmoking history and 33% had some form of hormonal contraception. Conclusion The overall prevalence of high risk HPV (HR-HPV) among these 57 Filipino women with external genital warts is 26.3%. The higher prevalence of HPV 51, 52, 53, and 59 over HPV 16 and 18 in this group does not follow the usual epidemiological characteristics reported about this disease.
Outpatients ; Human papillomavirus 16 ; Philippines ; Papillomaviridae

OBJECTIVETo analyze the infection condition of human papillomavirus (HPV) type 16 and 18 in the squamous cells and columnar cells of patients with common anorecatal lesions.

METHODSInfections of HPV type 16 and 18 were determined with real-time fluorescent quantitative PCR in the wax-embedded surgical specimen of 805 patients with common anorectal diseases.

RESULTSThe overall infection rate among 805 patients with anorecatal lesions was 66.1% (532/805). The infection rate was 82.6% (95/115) in patients with mixed hemorrhoids, 76.5% (88/115) in anal papillary fibromas, 74.8% (86/115) in internal hemorrhoids, 72.2% (83/115) in fistulas, 69.6% (80/115) in external hemorrhoids, 47.8% (55/115) in anal perianal abscesses, and 39.1% (45/115) in anal fissures.

CONCLUSIONInfection rate of HPV type 16, 18 in common anorectal lesions is high.

OBJECTIVE: To evaluate the relationship between the expression of cytokeratins, Ki-67 and the infection of human papillomavirus 16, 18 type in the carcinogenic progrssion of the uterine cervical epithelium. METHODS: Investigation the expression patterns of CKs and Ki-67 monoclonal antibody, and compared them with the incidence of HPV infection in 120 patients including 30 cases of normal cervical epithelium, 30 cases of LSIL, 30 cases of HSIL and 30 cases of SCC, to possible relationship between them. RESULTS: The expression of CK 14, and Ki-67 increased as the cervical lesions progressed from normal to SILs and SCC. In contrast, CK 13 is decreased as the cervical lesions progressed from normal to SILs and SCC. Statistical analysis revealed significant corelations between the CK 14 and spinal layer, between CK 13 and basal layer, between Ki-67 and all layers. HPV was detected in 16.7% of normal cervical tissue, 50.0% of LSIL, 70.0% of HSIL, 80.0% of SCC with PCR technique. The labelling indices of Ki-67 were significantly higher in HSIL than in normal cervical tissue and LSIL. The labelling indices were also higher in groups with positive reactions to CK 14, 13, and HPV than in groups with negative reactions to them. CONCLUSION: It was postulated that examination of patterns of immunoreactivity of CK 14, 13, and Ki- 67 could be a useful and convenient tool to explain the trasition from normal cervical epithelium to SCC via LSIL and HSIL and thereby predict the differentiation potential of the studies for lesions.
Epithelium* ; Human papillomavirus 16* ; Humans* ; Incidence ; Keratins* ; Polymerase Chain Reaction

BACKGROUND: Some types of human papillomavirus (HPV) play a major role in the pathogenesis of cervical cancer. Several dozens of studies on the association of HPV with cervical neoplasm have been done since the first detection of HPV 16 and 18 directly from cervical cancer patients in 1983. Approximately 90 types of HPV have been identified so far and the number of oncogenic HPV types is still growing. In this study, we examined the occurrence of oncogenic HPV infections in patients with cervical lesions. Method : Two hundred twenty cervical swab specimens were collected during a 3 year period (1996-1999). Processed specimens were tested for HPV type 16 and 18 by polymerase chain reaction. RESULTS: HPV type 16 was detected in the cervical swab specimens as follows: 19 (51.4%) of 37 cervical cancer patients, 19 (30.2%) of 63 high-grade squamous intraepithelial lesions, 5 (9.6%) of 52 low-grade squamous intraepithelial lesion, none in 6 atypical squamous cells of undetermined significance and 3 (4.8%) of 62 normal cervices. Conclusion : The positive rate for HPV type 16 increased according to the degree of cervical malignancy.
Human papillomavirus 16 ; Humans* ; Polymerase Chain Reaction* ; Uterine Cervical Neoplasms

OBJECTIVE: We analysed subtype of HPV infection in cervical cancer and precancerous lesion among women who lived in Daegu and Gyeongbuk province. METHODS: We recruited total of 441 women diagnosed with cytologically abnormal cervical samples between Dec. 2004 and Dec. 2006. We investigated the distribution of HPV subtype and multiple infection according to cervical lesion and age. RESULTS: The most prevalent HPV subtypes in cervical cancer and precancerous lesion were HPV 16, 58, 18, 31, 56 in ASCUS, HPV 16, 58, 52, 66, 18 in LSIL, HPV 16, 58, 33, 52, 18 in HSIL, HPV 16, 58, 33, 52, 53 in IC each other. IC was less multiple infection than ASCUS, LSIL, HSIL. There was strong correlation between the incidence of multiple HPV infection and cervical lesion in young women (<25 years). CONCLUSION: The types of HPV 16, 58, 52, 18 were common in cervical cancer and precancerous lesion from Daegu and Gyeongbuk province. Multiple infections were more common in women under 25 years of age than above age and precancerous lesion.
Female ; Human papillomavirus 16 ; Humans ; Incidence ; Prevalence ; Uterine Cervical Neoplasms

OBJECTIVE: The purpose of this study was to assess the role of HPV 16 and 18 in adenocarcinoma in situ(ACIS) of the uterine cervix. METHODS: Seventeen cases of primary cervical adenocarcinoma in situ were analyzed for HPV DNA by polymerase chain reaction. HPV 16 and 18 DNA extracted from formalin-fixed, paraffin-embedded histologic tissue sections by polymerase chain reaction. RESULTS: 35.3% and 23.5% of ACIS were positive for HPV 16 and HPV 18 DNA, respectively. From the normal tissue, 11.8% were positive for HPV 16. Human papillomavirus positive patients were younger than negative patients but statistically insignificant(mean age 42.1 vs 51.7 years). CONCLUSIONS: These results show that HPV type 16 and 18 were closely related to etiology of the ACIS of the uterine cervix.
Adenocarcinoma* ; Cervix Uteri* ; DNA ; Female ; Human papillomavirus 16 ; Human papillomavirus 18 ; Humans* ; Papilloma* ; Polymerase Chain Reaction

BACKGROUND: Condylomata acuminata is a sexually transmitted cisease which is caused by the human papillomavirus(HPV). The types of HPV causing condylomata acuminata are HPV 6,11,16,18. HPV 16 and 18 are related to anogenital carcinoma. OBJECTIVE: The goals of this study were to determine the types cif HPV in condylomata acuminata, and to investigate the relationship between condylomata acuminata and anogenital carcinoma. MEHTODS: Polymerase chain reaction and restriction fragment le igth polymorphisms were performed in the paraffin-embedded tissues of 17 cases of condylomata acciminata. RESULTS: HPV DNA was detected in all of 17 cases of condylomata accuminata tested. HPV 6 and 11 were found in 53% (9/17) and 41% (7/17) of the samples, respectiiely. HPV 16 and/or 18, which are related to anogenital carcinovia, were not detected, except in one case in which HPV 16 was found to be superimposed with HPV 6 and 11. CONCLUSION: These results suggest that most of condylomata acumirata are caused by HPV 16 and 11, and there is not so much risk of this disease transforming into the aiogenital carcinoma.
Biopsy* ; Condylomata Acuminata* ; DNA* ; Human papillomavirus 16 ; Human papillomavirus 6 ; Humans* ; Polymerase Chain Reaction*

The necessary role of genital infection by specific types of human papillomavirus (HPV) in cervical cancer development provides an opportunity to reduce the risk of cervical cancer, a second leading cancer in women, through prophylactic vaccination. Two types of vaccines targeting HPV 16 and 18 which are responsible for about 70% of all cervical cancer worldwide have been developed: a quadrivalent vaccine (Gardasil?) and a bivalent vaccine (Cervarix?). Gardasil also targets HPV 6 and 11 causing 90% of genital wart. Both two vaccines contain virus-like particles composed of L1 protein of viral capsid and do not exert infectivity. HPV vaccines were highly effective in preventing persistent infection by vaccine specific type HPV in young women who have not been previously exposed to them. Randomized double-blind placebo-controlled clinical trials have provided evidence that HPV vaccines have high efficacy against cervical precancerous lesion in young women irrespective of baseline HPV infection status. However, HPV vaccines neither treat existing HPV infections nor provide protection against all types of HPV related with cervical cancer. Therefore, even vaccinated females should take cervical cancer screening as recommended. Gardasil has been tested mainly in 9~26 years old females and Cervarix in 15~25 years old. Current recommendation for vaccination age is 9~26 years for Gardasil and 10~25 years for Cervarix, considering sexual debut and previous clinical trials. There are plenty of remaining issues regarding HPV vaccination such as vaccine efficacy in older women and in males, cost-effectiveness, duration of protection, cross-protection, potential replacement infection, and vaccine compatibility.
Cancer Vaccines ; Capsid ; Condylomata Acuminata ; Female ; Human papillomavirus 16 ; Human papillomavirus 18 ; Human papillomavirus 6 ; Humans ; Male ; Mass Screening ; Papillomavirus Vaccines ; Uterine Cervical Neoplasms ; Vaccination ; Vaccines ; Human Papillomavirus Recombinant Vaccine Quadrivalent, Types 6, 11, 16, 18