scholarly journals Cross-Reactivity, Epitope Spreading, andDe NovoImmune Stimulation Are Possible Mechanisms of Cross-Protection of Nonvaccine Human Papillomavirus (HPV) Types in Recipients of HPV Therapeutic Vaccines

2015 ◽  
Vol 22 (7) ◽  
pp. 679-687 ◽  
Author(s):  
Mayumi Nakagawa ◽  
William Greenfield ◽  
Andrea Moerman-Herzog ◽  
Hannah N. Coleman
Keyword(s):  
Human Papillomavirus ◽  
High Risk ◽  
Hpv Infection ◽  
Cross Reactivity ◽  
Cross Protection ◽  
Epitope Spreading ◽  
Therapeutic Vaccines ◽  
Hpv 16 ◽  
Hpv Types ◽  
High Risk Hpv

ABSTRACTNumerous versions of human papillomavirus (HPV) therapeutic vaccines designed to treat individuals with established HPV infection, including those with cervical intraepithelial neoplasia (CIN), are in development because approved prophylactic vaccines are not effective once HPV infection is established. As human papillomavirus 16 (HPV-16) is the most commonly detected type worldwide, all versions of HPV therapeutic vaccines contain HPV-16, and some also contain HPV-18. While these two HPV types are responsible for approximately 70% of cervical cancer cases, there are other high-risk HPV types known to cause malignancy. Therefore, it would be of interest to assess whether these HPV therapeutic vaccines may confer cross-protection against other high-risk HPV types. Data available from a few clinical trials that enrolled subjects with CINs regardless of the HPV type(s) present demonstrated clinical responses, as measured by CIN regression, in subjects with both vaccine-matched and nonvaccine HPV types. The currently available evidence demonstrating cross-reactivity, epitope spreading, andde novoimmune stimulation as possible mechanisms of cross-protection conferred by investigational HPV therapeutic vaccines is discussed.

scholarly journals Human Papillomavirus Type Distribution and Correlation with Cyto-Histological Patterns in Women from the South of Italy

2009 ◽  
Vol 2009 ◽  
pp. 1-4 ◽  
Author(s):  
Paola Menegazzi ◽  
Luisa Barzon ◽  
Giorgio Palù ◽  
Elisa Reho ◽  
Luigi Tagliaferro
Keyword(s):  
Human Papillomavirus ◽  
High Risk ◽  
Hpv Infection ◽  
Multiple Infection ◽  
Multiple Infections ◽  
The South ◽  
Hpv 16 ◽  
Specific Distribution ◽  
Hpv Types ◽  
High Risk Hpv

Human papillomavirus (HPV) type-specific distribution was evaluated in genital samples collected from 654 women from the South of Italy undergoing voluntary screening and correlated with cyto-histological abnormalities. HPV DNA was detected in 45.9% of the samples, 41.7% of which had multiple infection and 89.0% had high-risk HPV infection. The prevalence of HPV infection and the rate of multiple infections decreased with age, suggesting natural selection of HPV types with better fitness. In line with other Italian studies, the most common HPV types were HPV-6 and HPV-16, followed by HPV-51, HPV-31, HPV-53, and HPV-66, in women with both normal and abnormal cytology. Cervical intraepithelial lesions grade 2 or 3 were associated with high-risk HPV-16, HPV-18, HPV-31, and HPV-51 infection. These data indicate that prophylactic HPV vaccination is expected to reduce the burden of HPV-related cervical lesions in this population, but also suggest the potential utility of new vaccines with larger type coverage.

scholarly journals Detection Rates of Human Papillomavirus Associated with Cervical Cancer in Women of Nizhny Novgorod

2020 ◽  
pp. 44-47
Author(s):  
NF Brusnigina ◽  
MA Makhova ◽  
OM Chernevskaya ◽  
KA Orlova ◽  
EA Kolesnikova ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Human Papillomavirus ◽  
High Risk ◽  
Hpv Infection ◽  
Human Papillomaviruses ◽  
Hpv 16 ◽  
Detection Rates ◽  
High Risk Hpv ◽  
Incident Cases ◽  
Oncogenic Hpv

The purpose of the study was to assess detection rates of human papillomavirus in cervical cancer cases of Nizhny Novgorod. Materials and methods. We used the real-time polymerase chain reaction (PCR) to test samples of mucosa lining of the cervical canal and/or transformation zone taken from 630 women with cervical dysplasia of different degrees and 107 incident cases of cervical cancer that did not undergo treatment. The detection and differentiation of 14 genotypes of high-risk human papillomaviruses (HPV) was carried out using the AmpliSens® HPV HCR-genotype-FRT PRC kit. Results. The overall infection rate of women with oncogenic human papillomaviruses was 41.8%. Among the genotypes, HPV 16 (39.2%), 18 (15.5%), 33 (16.6%), and 56 (11.9%) predominated. A high prevalence of oncogenic HPV was detected in the women with cervical intraepithelial neoplasia (58.1%) and cervical cancer (90%). The spectrum of genotypes in women with neoplasia of various degrees differed. In women with CIN II and CIN III, vaccine-preventable HPV genotypes (HPV 16 and 18) playing the leading role in the development of cervical cancer were the most frequent. The same genotypes dominated in the women with invasive cervical cancer. One oncogenic HPV genotype was usually found in the infected women (69%). The high-risk HPV infection was often combined with Ureaplasma ssp (49.3%), Mycoplasma hominis (20.1%), Cytomegalovirus (21.1%), and Herpes simplex I/II (18.2%) infections. Combinations of high-risk HPV with Chlamydia trachomatis and Herpes 6 were found in 8.3% and 5% of the cases, respectively. Conclusions. Our findings proved a wide prevalence of high carcinogenic risk HPV 16 and 18 genotypes, thus indicating the expediency of using Cervarix and Gardasil vaccines registered in the Russian Federation and containing antigens to these types of virus for specific prevention of the HPV infection.

High-risk human papillomavirus (HPV) detection in formalin-fixed paraffin-embedded cervical tissues: performances of Aptima HPV assay and Beckton Dickinson (BD) Onclarity assay

2021 ◽  
pp. jclinpath-2021-207657
Author(s):  
Gozde Kir ◽  
Humeyra Gunel ◽  
Zeynep Cagla Olgun ◽  
W Glenn McCluggage
Keyword(s):  
Human Papillomavirus ◽  
High Risk ◽  
Hpv 16 ◽  
Formalin Fixed Paraffin ◽  
Formalin Fixed Paraffin Embedded ◽  
Ffpe Tissues ◽  
Hpv Types ◽  
High Risk Hpv ◽  
Hpv Assays ◽  
Formalin Fixed

AimThere are many scenarios where high-risk human papillomavirus (HPV) detection in formalin-fixed paraffin-embedded (FFPE) specimens is important. However, there is no Food and Drug Administration (FDA)-approved and clinically validated technique for detecting high-risk HPV in FFPE tissues. In this study, we evaluated two commercially available HPV assays which are FDA-approved for use on cytology specimens, the Aptima HPV assay and the Beckton Dickinson (BD) Onclarity assay, to detect high-risk HPV in FFPE tissues of cervical high-grade squamous intraepithelial lesion (HSIL) and squamous cell carcinoma (SCC).MethodsA total of 189 cases (46 SCC, 107 HSIL and 36 benign/normal) were tested for high-risk HPV with the Aptima HPV assay and a subset of cases (n=97) with the BD Onclarity assay.ResultsThe sensitivities of the Aptima and BD Onclarity HPV assays were 99.4% (95% CI 96.46% to 99.98%) and 75.9% (95% CI 65.27% to 84.62%), respectively; the specificity and positive predictive value (PPV) of the two assays were 100%. Negative predictive values of the Aptima and BD Onclarity HPV assays were 97.3% (95% CI 83.61% to 99.61%) and 67.7% (95% CI 58.91% to 75.47%), respectively. The kappa value (0.96) for comparison of the distribution of high-risk HPV types between the two assays was high. HPV 16 was the most common high-risk HPV type for HSIL and SCC cases. However, SCC cases had higher percentages of HPV 16 and HPV 18/45 and lower percentages of other high-risk HPV types compared with HSIL cases.ConclusionBoth assays are reliable methods for high-risk HPV detection and genotype determination in FFPE specimens, with high PPV and specificity. The Aptima HPV assay has the advantage of higher sensitivity. As far as we are aware, this is the first study comparing the Aptima HPV assay and the BD Onclarity assay in FFPE tissues. Our study results should be tested and confirmed in larger cohorts.

scholarly journals The Prevalence and Distribution of High Risk Human Papillomavirus Genotypes in Patients with Dysplastic Lesions: a Population Study

2015 ◽  
Vol 61 (4) ◽  
pp. 314-319
Author(s):  
Voidăzan Septimiu ◽  
Morariu Silviu-Horia ◽  
Căpâlnă Mihai ◽  
Mărginean Claudiu ◽  
Dobreanu Minodora
Keyword(s):  
Human Papillomavirus ◽  
High Risk ◽  
Public Health Problem ◽  
Hpv Infection ◽  
Single Infection ◽  
Multiple Infections ◽  
Major Public Health Problem ◽  
Hpv Genotypes ◽  
Hpv Types ◽  
High Risk Hpv

AbstractBackground. Cervical cancer (CC) is a major public health problem worldwide. Knowledge of human papillomavirus (HPV) genotype prevalence and distribution is important for the introduction of an effective vaccination program and the corresponding epidemiological monitoring. The aim of this study was to identify and analyze the distribution of high-risk HPV genotypes.Methods. Data were collected from 136 patients for the detection of circulating HPV genotypes, where Pap test results revealed the presence of koilocytes or high risk (HR) dysplastic lesions, elements that raise the suspicion of HPV infection.Results. HPV infection was identified in 72 (55.4%) of the patients tested, 34 (47.3%) with single infection, and 38 (52.7%) with multiple infections. Twenty-two different types of HPV were identified: 14 high risk HPV types, 7 low risk HPV types, 1 probable high risk HPV type. HPV 16 was the most frequently detected (55.6%) one, it was involved in single (15 cases) and multiple (25 cases) infections, primarily associated with type 18 (12 cases), and type 52 (11 cases). The presence of HPV 18 (29.2%) and HPV 52 (23.6%) was identified after HPV type 16.Conclusions. Oncogenic HPV genotypes 16, 18, and 52 were most frequently associated in women with dysplastic lesions, which require the use of polyvalent HPV vaccines when assessing cross-protective effects of specific immunoprophylaxis programs.

P–071 Human Papillomavirus Infection and impact on men fertility

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
N Madzunkov ◽  
K Madjunkova
Keyword(s):  
Human Papillomavirus ◽  
High Risk ◽  
Male Infertility ◽  
Sperm Quality ◽  
Hpv Infection ◽  
Hpv Dna ◽  
Hpv Types ◽  
Adverse Pregnancy ◽  
High Risk Hpv ◽  
The Impact

Abstract Study question Is there any correlation between men infertility and HPV infection and its impairment on sperm quality? Summary answer There is a significantly higher prevalence of high-risk HPV in infertile men than fertile men. HPV infection does not impair sperm quality. What is known already Many factors may cause the infertility in males and females. Human papillomavirus are the most frequently sexually transmitted DNA viruses and etiological agents of cervical cancers. There is association between HPV infection in females and adverse pregnancy outcomes such as spontaneous abortion and spontaneous preterm delivery. Previous studies have reported the detection of HPV DNA in semen and in different sites of the male reproductive tract, such as glans penis and scrotum. Recent reports suggested that HPV may affect sperm parameters and lead to male infertility. The impact of HPV infection upon male fertility abnormality has received far less attention. Study design, size, duration In this study case control study we examined 38 fertile and 36 men from infertle couples. Participants/materials, setting, methods we examined the swabs of the entire penile surface and semen samples for HPV detection and genotyping from 38 fertile men and 36 from men from infertile couples.HPV were detected with PCR method. Sperm was also examined for its motility, sperm quantity and morphology . Main results and the role of chance Among 36 confirmed infertile males, only 8 (22.22%) cases were tested positive for HPV of semen samples and 2 among fertile men were HPV-positive (5.26%) of semen samples. Among infertile males 14 (38.88%) had HPV positive penile swabs, and only 1 (2,63%) had positive HPV swab among fertile men. The most prevalent HPV types in the male external genitalia were HPV–16. The most prevalent HPV types in semen were HPV–53. This data revealed a significant association between high-risk HPV and male infertility (P = 0.03). Sperm quality (morphology and motility) did not differ significantly between men with seminal HPV infection and uninfected men. Limitations, reasons for caution There were some limitations in the study such as differences in age. sample sizes and the number of HPV genotypes detected. Wider implications of the findings: We need larger studies and more further investigations to confirm the impact of HPV on male infertility. Trial registration number 2

scholarly journals Common types of infection with multitypes of HPV on uterine cervix

2018 ◽  
Vol 7 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Ting Miao
Keyword(s):  
Cervical Cancer ◽  
Human Papillomavirus ◽  
High Risk ◽  
Hpv Infection ◽  
Tumor Susceptibility ◽  
Common Causes ◽  
Hpv Types ◽  
The Common ◽  
High Risk Hpv ◽  
The Relationship

Abstract Persistent infection by human papillomavirus (HPV) is an important factor causing cervical cancer. In recent years, infection with multiple HPV types has been confirmed in various studies. High-risk HPV 16 and 18 and low-risk HPV 6 are the most common causes of multitype HPV infection. Infection with multiple types of HPV, which results from individual susceptibility, is crucial in tumor susceptibility. This paper summarizes the common types of multiple HPV infection to enable further research on the relationship between HPV and tumor susceptibility.

scholarly journals Molecular characterization of high-risk human papillomavirus (HR-HPV) in women in Lomé, Togo

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Akouélé P. Kuassi-Kpede ◽  
Essolakina Dolou ◽  
Théodora M. Zohoncon ◽  
Ina Marie Angèle Traore ◽  
Gnatoulma Katawa ◽  
...  
Keyword(s):  
Human Papillomavirus ◽  
High Risk ◽  
West Africa ◽  
Public Health Problem ◽  
Hpv Infection ◽  
Cervical Lesions ◽  
Hpv Genotypes ◽  
Precancerous Cervical Lesions ◽  
High Risk Hpv ◽  
First Time

Abstract Background The causative agent of cervical cancer referred to as Human papillomavirus (HPV) remains a real public health problem. Many countries in West Africa, such as Togo have no data on the high-risk HPV (HR-HPV) infection and genotypes distribution. In order to fill the knowledge gap in the field in Togo, the main objective of this study was to determine the prevalence of pre-cancerous lesions of the cervix and HR-HPV genotypes among Togolese women. Methods Samples were collected from 240 women by introducing a swab in the cervix. Then, the screening of precancerous cervical lesions using the visual inspection with acetic acid and lugol (VIA / VIL) was conducted. The HR-HPV genotypes were characterised by real-time multiplex PCR. Results Out of 240 women recruited, 128 (53.3%) were infected by HR-HPV. The most common genotypes were HPV 56 (22.7%), followed by HPV 51 (20.3%), HPV 31 (19.5%), HPV 52 (18.8%) and HPV 35 (17.2%). The least common genotypes were HPV 33 (2.3%) and HPV 16 (2.3%). Among the women, 1.3% (3/240) were positive to VIA/VIL. Conclusion This study allowed HR-HPV genotypes to be characterised for the first time in Lomé, Togo. This will help in mapping the HR-HPV genotypes in West Africa.

scholarly journals Prevalence and Genotyping of Human Papillomavirus (HPV) in Female with High-Risk Behaviour in Dhaka, Bangladesh

1970 ◽  
Vol 25 (1) ◽  
pp. 65-68 ◽  
Author(s):  
Tahmina Sultana ◽  
Mohsina Huq ◽  
Anadil Alam ◽  
Dipak Kumar Mitra ◽  
Donald James Gomes
Keyword(s):  
Cervical Cancer ◽  
Polymerase Chain Reaction ◽  
Human Papillomavirus ◽  
High Risk ◽  
General Population ◽  
Sex Workers ◽  
Chain Reaction ◽  
Hpv Types ◽  
Polymerase Chain ◽  
High Risk Hpv

In developing countries, cervical cancer is the most common cause of cancer related to mortality in women. But the epidemiology of human papillomavirus (HPV) in different areas of Bangladesh is largely unknown both in risk groups and in the general population. The objective of the present study was to determine the risk factors associated with having HPV and the prevalence of high-risk HPV types among women with highrisk behaviour and to assess its potential impact on preventive strategies as the sex workers are at increased risk for sexually transmitted infections (STI), HPV and hence cervical cancer. Cervical swab from 293 sex workers in Dhaka City between August and September 2003 and between February 2005 and May 2006 were screened for HPV DNA using an HPV short fragment (E6) polymerase chain reaction (PCR) based assay. HPV positive samples were genotyped with nested multiplex polymerase chain reaction (NMPCR) for the highrisk types. The overall HPV prevalence in sex workers was 75.8%, whereas for the high risk type it was 49.8%. Prevalence of single genotype and multiple types of HPV was 33.1 and 16.7% respectively. The most prevalent high-risk HPV types, in order of prevalence rate, were HPV16, HPV18, HPV58, HPV45, HPV31 and HPV33. Both HPV 16 and HPV 18 were present in 21% of the cases. Targeting HPV 16 and 18 with prophylactic vaccines could possibly have an important impact on the incidence of invasive cervical carcinoma in this group of women. Primary prevention and cervical cancer screening programmes should be optimized more and run yearly among the general population. It is proposed to screen sex workers when they enter prostitution regardless of their age. Keywords: Human papillomavirus (HPV); High-risk HPV types; Cervical cancer; Sex workersDOI: http://dx.doi.org/10.3329/bjm.v25i1.4861 Bangladesh J Microbiol, Volume 25, Number 1, June 2008, pp 65-68

scholarly journals Genotype Distribution of Human Papillomavirus among Women with Cervical Cytological Abnormalities or Invasive Squamous Cell Carcinoma in a High-Incidence Area of Esophageal Carcinoma in China

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Yuanyuan Wang ◽  
Shaohong Wang ◽  
Jinhui Shen ◽  
Yanyan Peng ◽  
Lechuan Chen ◽  
...  
Keyword(s):  
High Risk ◽  
Cervical Cytology ◽  
Invasive Squamous Cell Carcinoma ◽  
Genotype Distribution ◽  
Normal Cytology ◽  
Hpv 16 ◽  
High Incidence ◽  
Hpv Types ◽  
High Risk Hpv ◽  
High Incidence Area

Data of HPV genotype including 16 high-risk HPV (HR-HPV) and 4 low-risk HPV from 38,397 women with normal cytology, 1341 women with cervical cytology abnormalities, and 223 women with ISCC were retrospectively evaluated by a hospital-based study. The prevalence of high-risk HPV (HR-HPV) was 6.51%, 41.83%, and 96.86% in women with normal cytology, cervical cytology abnormalities, and ISCC, respectively. The three most common HPV types were HPV-52 (1.76%), HPV-16 (1.28%), and HPV-58 (0.97%) in women with normal cytology, whereas the most prevalent HPV type was HPV-16 (16.85%), followed by HPV-52 (9.55%) and HPV-58 (7.83%) in women with cervical cytology abnormalities. Specifically, HPV-16 had the highest frequency in ASC-H (24.16%, 36/149) and HSIL (35.71%, 110/308), while HPV-52 was the most common type in ASC-US (8.28%, 53/640) and LSIL (16.80%, 41/244). HPV-16 (75.78%), HPV18 (10.31%), and HPV58 (9.87%) were the most common types in women with ISCC. These data might contribute to increasing the knowledge of HPV epidemiology and providing the guide for vaccine selection for women in Shantou.

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