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Hpv DNA vaccine

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https://www.readbyqxmd.com/read/28102931/the-impact-of-hpv-type-on-colposcopy-performance-in-women-offered-hpv-immunisation-in-a-catch-up-vaccine-programme-a-two-centre-observational-study
#1
Ami Munro, Collette Gillespie, Seonaidh Cotton, Camille Busby-Earle, Kim Kavanagh, Kate Cuschieri, Heather Cubie, Chris Robertson, Louise Smart, Kevin Pollock, Catherine Moore, Timothy Palmer, Margaret E Cruickshank
OBJECTIVE: To determine if HPV immunisation has affected the prevalence of HPV genotypes and colposcopic features of CIN in young women referred for colposcopy. DESIGN: A two-centre observational study including vaccinated and unvaccinated women. SETTING: Colposcopy clinics serving two health regions in Scotland, UK. POPULATION: 361 women aged 20-25 years attending colposcopy following an abnormal cervical cytology result at routine cervical screening...
January 19, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28091335/high-prevalence-of-hpv-infection-in-the-remote-villages-of-french-guiana-an-epidemiological-study
#2
A Adenis, V Dufit, M Douine, F Corlin, G Ayhan, F Najioullah, V Molinie, P Brousse, G Carles, V Lacoste, R Cesaire, M Nacher
Cervical cancer is the second most frequent cancer in women in French Guiana. Studies have shown that populations living in the remote areas of the interior have early sexual debut and that multiple sexual partnerships are common. The objective of the present study was thus to determine the prevalence of human papillomavirus (HPV) infection in these areas. A study was conducted in women aged 20-65 years with previous sexual activity. Women were included on a voluntary basis after using local media and leaders to inform them of the visit of the team...
January 16, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28045981/hpv-genotyping-of-modified-general-primer-amplicons-is-more-analytically-sensitive-and-specific-by-sequencing-than-by-hybridization
#3
Roger Meisal, Trine Ballestad Rounge, Irene Kraus Christiansen, Alexander Kirkeby Eieland, Merete Molton Worren, Tor Faksvaag Molden, Øyvind Kommedal, Eivind Hovig, Truls Michael Leegaard, Ole Herman Ambur
Sensitive and specific genotyping of human papillomaviruses (HPVs) is important for population-based surveillance of carcinogenic HPV types and for monitoring vaccine effectiveness. Here we compare HPV genotyping by Next Generation Sequencing (NGS) to an established DNA hybridization method. In DNA isolated from urine, the overall analytical sensitivity of NGS was found to be 22% higher than that of hybridization. NGS was also found to be the most specific method and expanded the detection repertoire beyond the 37 types of the DNA hybridization assay...
2017: PloS One
https://www.readbyqxmd.com/read/28012703/physicochemical-characterization-and-immunological-properties-of-pichia-pastoris-based-hpv16l1-and-18l1-virus-like-particles
#4
Gaurav Gupta, Reinhard Glueck, Narayan Rishi
There continues to be an urgent need for cost-effective prophylaxis for HPV-associated cancers in socio-economically underdeveloped nations. Presently HPV vaccines, which are commercially available, are adjuvanted virus-like particles (VLPs) expressed from various recombinant expression systems. They have been characterized by different methods as safe, pure, and potent HPV vaccine antigens. We cloned and expressed L1 proteins of HPV16 & 18 in Pichia pastoris and tested their immunogenicity. We observed that HPVL1 proteins (16L1 and 18L1) are expressed in Pichia pastoris at high levels...
December 21, 2016: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28005904/epidemiologic-evaluation-of-human-papillomavirus-type-competition-and-the-potential-for-type-replacement-post-vaccination
#5
Joseph E Tota, Mengzhu Jiang, Agnihotram V Ramanakumar, Stephen D Walter, Jay S Kaufman, François Coutlée, Harriet Richardson, Ann N Burchell, Anita Koushik, Marie Hélène Mayrand, Luisa L Villa, Eduardo L Franco
BACKGROUND: Millions of women have been vaccinated with one of two first-generation human papillomavirus (HPV) vaccines. Both vaccines remain in use and target two oncogenic types (HPVs 16 and 18); however, if these types naturally compete with others that are not targeted, type replacement may occur following reductions in the circulating prevalence of targeted types. To explore the potential for type replacement, we evaluated natural HPV type competition in unvaccinated females. METHODS: Valid HPV DNA typing information was available from five epidemiological studies conducted in Canada and Brazil (n = 14,685; enrollment across studies took place between1993 and 2010), which used similar consensus-primer PCR assays, capable of detecting up to 40 HPV types...
2016: PloS One
https://www.readbyqxmd.com/read/27998015/efficacy-immunogenicity-and-safety-of-the-hpv-16-18-as04-adjuvanted-vaccine-in-chinese-women-aged-18-25%C3%A2-years-event-triggered-analysis-of-a-randomized-controlled-trial
#6
Feng-Cai Zhu, Shang-Ying Hu, Ying Hong, Yue-Mei Hu, Xun Zhang, Yi-Ju Zhang, Qin-Jing Pan, Wen-Hua Zhang, Fang-Hui Zhao, Cheng-Fu Zhang, Xiaoping Yang, Jia-Xi Yu, Jiahong Zhu, Yejiang Zhu, Feng Chen, Qian Zhang, Hong Wang, Changrong Wang, Jun Bi, Shiyin Xue, Lingling Shen, Yan-Shu Zhang, Yunkun He, Haiwen Tang, Naveen Karkada, Pemmaraju Suryakiran, Dan Bi, Frank Struyf
We previously reported the results of a phase II/III, double-blind, randomized controlled study in Chinese women (NCT00779766) showing a 94.2% (95% confidence interval: 62.7-99.9) HPV-16/18 AS04-adjuvanted vaccine efficacy (VE) against cervical intraepithelial neoplasia grade 1 or higher (CIN1+) and/or 6-month (M) persistent infection (PI) with a mean follow-up of <2 years, and immunogenicity until 7 months post-dose 1. Here, we report efficacy and safety results from an event-triggered analysis with ~3 years longer follow-up, and immunogenicity until M24...
December 20, 2016: Cancer Medicine
https://www.readbyqxmd.com/read/27979747/dna-vaccination-for-cervical-cancer-a-novel-technology-platform-of-rala-mediated-gene-delivery-via-polymeric-microneedles
#7
A A Ali, C M McCrudden, J McCaffrey, J W McBride, G Cole, N J Dunne, T Robson, A Kissenpfennig, R F Donnelly, H O McCarthy
HPV subtypes (16, 18) are associated with the development of cervical cancer, with oncoproteins E6 and E7 responsible for pathogenesis. The goal of this study was to evaluate our 'smart system' technology platform for DNA vaccination against cervical cancer. The vaccination platform brings together two main components; a peptide RALA which condenses DNA into cationic nanoparticles (NPs), and a polymeric polyvinylpyrrolidone (PVP) microneedle (MN) patch for cutaneous delivery of the loaded NPs. RALA condensed E6/E7 DNA into NPs not exceeding 100nm in diameter, and afforded the DNA protection from degradation in PVP...
December 12, 2016: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/27930979/hp91-immunoadjuvant-an-hmgb1-derived-peptide-for-development-of-therapeutic-hpv-vaccines
#8
Somayeh Talebi, Azam Bolhassani, Seyed Mehdi Sadat, Rouhollah Vahabpour, Elnaz Agi, Sepideh Shahbazi
BACKGROUND: High percentage of human cervical malignancy is related to human papillomavirus (HPV) infections. Thus, it is important to find novel non-invasive treatment strategies among various therapeutic HPV vaccines. In current study, we investigated the protective and therapeutic effects of DNA- and protein-based vaccines using HPV16 E7 as a model antigen in tumor mice model. In this line, the full length of high-mobility group box 1 (HMGB1) protein as well as an HMGB1-derived short peptide (Hp91) was used as an adjuvant for stimulating adaptive immunity and developing the potency of these vaccines...
January 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27929754/hpv-16-e5-oncoprotein-is-expressed-in-early-stage-carcinogenesis-and-can-be-a-target-of-immunotherapy
#9
Paolini Francesca, Curzio Gianfranca, Marcelo Nazario Cordeiro, Silvia Massa, Luciano Mariani, Fulvia Pimpinelli, Antonio Carlos de Freitas, Rosella Franconi, Aldo Venuti
HPV16 persistent infection is a well-known condition that precedes human cancer development. High risk HPV E5 proteins cooperate with E6/E7 oncogenes to promote hyper-proliferation of infected cells leading to possible cancer progression. Thus, presence of E5 viral transcripts could be a key marker of active infection and, in turn, a target of immunotherapy. Purpose of the study is to detect E5 transcripts in clinical samples and to explore the activity of novel anti-HPV16 E5 DNA vaccines. HPV transcripts were detected by PCR with specific primers encompassing the splice-donor sites of E5 transcript...
December 8, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27905473/carcinogenic-human-papillomavirus-infection
#10
Mark Schiffman, John Doorbar, Nicolas Wentzensen, Silvia de Sanjosé, Carole Fakhry, Bradley J Monk, Margaret A Stanley, Silvia Franceschi
Infections with human papillomavirus (HPV) are common and transmitted by direct contact. Although the great majority of infections resolve within 2 years, 13 phylogenetically related, sexually transmitted HPV genotypes, notably HPV16, cause - if not controlled immunologically or by screening - virtually all cervical cancers worldwide, a large fraction of other anogenital cancers and an increasing proportion of oropharyngeal cancers. The carcinogenicity of these HPV types results primarily from the activity of the oncoproteins E6 and E7, which impair growth regulatory pathways...
December 1, 2016: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/27891400/prevalence-of-human-papilloma-virus-infection-in-young-primiparous-women-during-postpartum-period-study-from-a-tertiary-care-center-in-northern-india
#11
Alpana Garg, Vanita Suri, Raje Nijhawan, Neelam Aggarwal, Ritu Aggarwal, Charu Guleria, Mili Thakur
INTRODUCTION: Assessment of high-risk Human Papilloma Virus (HPV) prevalence is important for monitoring long-term decrease in cervical cancer after implementation of the prophylactic HPV vaccination. AIM: To determine the prevalence of high-risk HPV infection and cytological abnormalities in young primiparous women in the age group of 16-26years. MATERIALS AND METHODS: In this cross-sectional study, 214 primiparous women aged 16-26years were recruited from a public tertiary health care center postpartum clinic between June 2013 and May 2014...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27875050/assessment-of-oral-human-papillomavirus-prevalence-in-a-multi-ethnic-pediatric-clinic-population
#12
Vikram Tiku, Chelsie J Todd, Karl Kingsley
The human papillomavirus (HPV) family has been associated with many cancers, including oral cancer. Recent studies have also revealed HPV presence from healthy adult and pediatric patient saliva samples, though much less is known about the oral prevalence of high-risk HPV in healthy children and adolescents. The primary goal of this project was to assess the prevalence of HPV within a pediatric dental clinic using non-invasively collected saliva. In brief, saliva was collected and DNA isolated to screen for HPV strains HPV6, HPV11, HPV16, and HPV18...
November 2016: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/27843487/invasive-cervical-cancers-in-the-united-states-botswana-and-kenya-hpv-type-distribution-and-health-policy-implications
#13
Aaron Ermel, Brahim Qadadri, Yan Tong, Omenge Orang'o, Benson Macharia, Doreen Ramogola-Masire, Nicola M Zetola, Darron R Brown
BACKGROUND: More deaths occur in African women from invasive cervical cancer (ICC) than from any other malignancy. ICC is caused by infection with oncogenic types of human papillomavirus (HPV). Co-infection with the human immunodeficiency virus (HIV) accelerates the natural history of ICC, and may influence the HPV type distribution. Because HPV vaccines are available, this malignancy is theoretically preventable, but the vaccines are largely type-specific in protection against infection...
2016: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/27821079/comparison-of-dna-testing-strategies-in-monitoring-human-papillomavirus-infection-prevalence-through-simulation
#14
Carol Y Lin, Ling Li
BACKGROUND: HPV DNA diagnostic tests for epidemiology monitoring (research purpose) or cervical cancer screening (clinical purpose) have often been considered separately. Women with positive Linear Array (LA) polymerase chain reaction (PCR) research test results typically are neither informed nor referred for colposcopy. Recently, a sequential testing by using Hybrid Capture 2 (HC2) HPV clinical test as a triage before genotype by LA has been adopted for monitoring HPV infections. Also, HC2 has been reported as a more feasible screening approach for cervical cancer in low-resource countries...
November 7, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27780076/the-burden-of-hpv-associated-cancers-in-two-regions-in-nigeria-2012-2014
#15
E E Jedy-Agba, E O Dareng, S N Adebamowo, M Odutola, E A Oga, F Igbinoba, T Otu, E Ezeome, F Bray, R Hassan, C A Adebamowo
INTRODUCTION: HPV attributable cancers are the second most common infection-related cancers worldwide, with much higher burden in less developed regions. There are currently no country-specific estimates of the burden of these cancers in Nigeria just like many other low and middle income countries. METHODS: In this study, we quantified the proportion of the cancer burden in Nigeria that is attributable to HPV infection from 2012 to 2014 using HPV prevalence estimated from previous studies and data from two population based cancer registries (PBCR) in Nigeria...
December 2016: Cancer Epidemiology
https://www.readbyqxmd.com/read/27770526/genotypic-distribution-of-hpv-among-women-of-reproductive-age-in-georgia
#16
M Butsashvili, M Kajaia, M Kochlamazashvili, M Zarandia, T Gagua, D Meskhishvili, N Avaliani, G Kamkamidze
Of the 100 types of human papillomaviruses (HPV), approximately 35 infect the genital tract. The viruses are categorized as "high risk" and "low risk" depending on whether they are known to cause cancer or not. Cervical cancer is an important cause of cancer mortality in Georgia, and worldwide. Only limited and incomplete data are available about the epidemiology of HPV infection and related molecular and cellular changes in Georgia. Objectives of our study included the estimation of the prevalence and the distribution of HPV genotypes among women in Georgia...
September 2016: Georgian Medical News
https://www.readbyqxmd.com/read/27754751/distribution-of-vaccine-type-human-papillomavirus-does-not-differ-by-race-or-ethnicity-among-unvaccinated-young-women
#17
Dana Whittemore, Lili Ding, Lea E Widdice, Darron A Brown, David I Bernstein, Eduardo L Franco, Jessica A Kahn
BACKGROUND: Previous studies have demonstrated racial and ethnic differences in the distribution of human papillomavirus (HPV) types among adult women with cervical precancers. The aim of this study was to determine whether the distribution of vaccine-targeted HPV types varies by race/ethnicity among unvaccinated young women. MATERIALS AND METHODS: A secondary analysis was performed using data from four studies of sexually experienced, unvaccinated, 13-26-year-old women...
November 2016: Journal of Women's Health
https://www.readbyqxmd.com/read/27746423/beneficial-effects-of-human-papillomavirus-vaccine-for-prevention-of-cervical-abnormalities-in-miyagi-japan
#18
Nobuyoshi Ozawa, Kiyoshi Ito, Toru Tase, Hirohito Metoki, Nobuo Yaegashi
Prevention of cervical cancer has been unsuccessful in Japan because of low rates of cancer screening and vaccination. The Vaccine Adverse Review Committee of the Japanese Government investigated 2,475 adverse events and reported 617 (6.9/100,000) severe cases and 176 (2.0/100,000) cases with chronic pain. The proactive recommendation for human papillomavirus (HPV) vaccination has been suspended since June 2013. In this study, we examined vaccination rate and incidence of abnormal cervical cytology in women aged 20 to 24 years attending cancer screening in Miyagi...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27734976/human-papillomavirus-and-head-and-neck-carcinomas-focus-on-evidence-in-the-babel-of-published-data
#19
P Morbini, M Benazzo
Human papillomavirus (HPV)-associated squamous cell carcinoma of the oropharynx is a well-defined entity mostly affecting young to middle-aged male non-smokers. It is generally associated with a favourable outcome, and for this reason a less intensive therapeutic approach has been proposed for this subset of patients. The incidence of HPV-associated oropharyngeal cancers is rapidly increasing in most Western countries, but detailed epidemiological data are not available for the Italian population. Furthermore, among other head and neck regions, a smaller proportion of oral high-grade dysplasia and cancers seems to depend on HPV infection, whereas its role in laryngeal cancer is recognised as less relevant...
August 2016: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/27723194/high-prevalence-of-genital-hpv-infection-among-long-term-monogamous-partners-of-women-with-cervical-dysplasia-or-genital-warts-another-reason-for-hpv-vaccination-of-boys
#20
Filip Rob, Ruth Tachezy, Tomáš Pichlík, Lukáš Rob, Zuzana Kružicová, Eva Hamšíková, Jana Šmahelová, Jana Hercogová
We conducted a cross-sectional study on the occurrence of a specific type of genital human papillomavirus (HPV) among long-term monogamous male partners of women with cervical dysplasia and genital warts. The purpose of the study was to improve knowledge with regards to the management of these couples. The presence of genital HPV-DNA was detected by PCR with broad spectrum primers followed by hybridization. 82 males met the study criteria, 41 in each group. Genital HPV-DNA prevalence was 67.5% in the genital warts group and 72...
October 9, 2016: Dermatologic Therapy
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