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HPV vaccines efficacy

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https://www.readbyqxmd.com/read/29157955/development-of-a-goat-model-for-evaluation-of-withaferin-a-cervical-implants-for-the-treatment-of-cervical-intraepithelial-neoplasia
#1
Leslie C Sherwood, Farrukh Aqil, Manicka V Vadhanam, Jeyaprakash Jeyabalan, Radha Munagala, David Hoetker, Sanjay Srivastava, Inder P Singh, Scott Cambron, Martin O'Toole, Wendy Spencer, Lynn P Parker, Ramesh C Gupta
Cervical cancer is caused by human papillomavirus (HPV). The disease develops over many years through a series of precancerous lesions. Cervical cancer can be prevented by HPV-vaccination, screening and treatment of precancer before development of cervical cancer. The treatment of high-grade cervical dysplasia (CIN(2+)) has traditionally been by cervical conization. Surgical procedures are associated with increased risk of undesirable side effects including bleeding, infection, scarring (stenosis), infertility and complications in later pregnancies...
November 17, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29149434/enhancement-of-therapeutic-dna-vaccine-potency-by-melatonin-through-inhibiting-vegf-expression-and-induction-of-antitumor-immunity-mediated-by-cd8-t-cells
#2
Sanaz Baghban Rahimi, Alireza Mohebbi, Gelareh Vakilzadeh, Peyvand Biglari, Soodeh Razeghi Jahromi, Seyed Reza Mohebi, Sadegh Shirian, Ali Gorji, Amir Ghaemi
To be effective, therapeutic cancer vaccines should stimulate both an effective cell-mediated and a robust cytotoxic CD8+ T-cell response against human papillomavirus (HPV)-infected cells to treat the pre-existing tumors and prevent potential future tumors. In this study, the therapeutic experiments were designed in order to evaluate antitumor effect against the syngeneic TC-1 tumor model. The anti-tumor efficacy of a HPV-16 E7 DNA vaccine adjuvanted with melatonin (MLT) was evaluated in a C57BL/6 mouse tumor model by measuring tumor growth post vaccination and the survival rate of tumor-bearing mice, analyzing the specific lymphocyte proliferation responses in control and vaccinated mice by MTT assay...
November 17, 2017: Archives of Virology
https://www.readbyqxmd.com/read/29134823/does-self-efficacy-mediate-the-relationships-between-social-cognitive-factors-and-intentions-to-receive-hpv-vaccination-among-young-women
#3
Shannon M Christy, Joseph G Winger, Catherine E Mosher
Drawing upon health behavior change theories, the current study examined whether self-efficacy mediated relationships between social-cognitive factors (i.e., perceived risk, perceived benefits, perceived barriers, perceived severity, and cue to action) and human papillomavirus (HPV) vaccination intentions among college women. Unvaccinated women ( N = 115) aged 18 to 25 years attending a Midwestern university completed an anonymous web-based survey assessing study variables. Correlational analyses and mediation analyses were conducted...
November 1, 2017: Clinical Nursing Research
https://www.readbyqxmd.com/read/29098504/examining-hpv-and-hpv-vaccine-related-cognitions-and-acceptability-among-us-born-and-immigrant-hispanics-and-us-born-and-immigrant-non-hispanic-blacks-a-preliminary-catchment-area-study
#4
Kimlin Tam Ashing, Agatha Carrington, Camille Ragin, Veronica Roach
PURPOSE: Disparities in HPV vaccination exist. Therefore, we investigated the distinction and disparities in HPV- and HPV vaccine-related cognitions and acceptability among US-born African Americans (AA) and Black immigrants, and between US-born Latinas and Latina immigrants. METHODS: Secondary data analyses were conducted with 383 female adults divided into non-Hispanic Blacks-(1) AA born in the US (n = 129) and (2) Black immigrants (n = 53), and Hispanics-(3) Latinas born in the US (n = 57) and (4) Latina immigrants (n = 144)...
November 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/29074179/hpv-vaccination-intention-among-male-clients-of-a-large-sti-outpatient-clinic-in-amsterdam-the-netherlands
#5
E Marra, C J Alberts, G D Zimet, T G W M Paulussen, T Heijman, A A Hogewoning, G J B Sonder, J S Fennema, H J C de Vries, M F Schim van der Loeff
We explored HPV vaccination intention and its determinants among male clients of the sexually transmitted infections (STI) clinic in Amsterdam. In 2015, male clients aged ≥18 years were invited to complete a web-based questionnaire regarding HPV vaccination intention and socio-psychological determinants. Determinants (scale -3 to +3) were assessed with linear regression, stratified for men who have sex with men (MSM) (including men who have sex with men and women) and men who only have sex with women (MSW)...
December 2016: Papillomavirus Research
https://www.readbyqxmd.com/read/29055031/impact-of-gender-neutral-or-girls-only-vaccination-against-human-papillomavirus-results-of-a-community-randomized-clinical-trial-i
#6
Matti Lehtinen, Anna Söderlund-Strand, Simopekka Vänskä, Tapio Luostarinen, Tiina Eriksson, Kari Natunen, Dan Apter, Iacopo Baussano, Katja Harjula, Mari Hokkanen, Marjo Kuortti, Johanna Palmroth, Tiina Petäjä, Eero Pukkala, Sirpa Rekonen, Mari Siitari-Mattila, Heljä-Marja Surcel, Leena Tuomivaara, Jorma Paavonen, Joakim Dillner, Gary Dubin, Geoffrey Garnett
Human papillomavirus (HPV) vaccine is efficacious but the real-life effectiveness of gender-neutral and girls-only vaccination strategies is unknown. We report a community-randomized trial on the protective effectiveness [(PE) = vaccine efficacy (VE) + herd effect (HE)] of the two strategies among females in virtually HPV vaccination naïve population. We randomized 33 Finnish communities into Arm A) gender-neutral vaccination with AS04-adjuvanted HPV16/18 vaccine (11 communities), Arm B) HPV vaccination of girls and hepatitis B-virus (HBV) vaccination of boys (11 communities) or Arm C) gender-neutral HBV vaccination (11 communities)...
October 21, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29042204/antibody-response-to-human-papillomavirus-vaccination-and-natural-exposure-in-individuals-with-fanconi-anemia
#7
Parinda A Mehta, Sharon Sauter, Xue Zhang, Stella M Davies, Suzanne I Wells, Kasiani C Myers, Gitika Panicker, Elizabeth R Unger, Melinda Butsch Kovacic
Fanconi anemia (FA) is a rare genetic disorder associated with predisposition to head and neck and gynecological squamous cell cancers. In the general population, these cancers are commonly linked to human papillomavirus (HPV) infection. Antibodies to natural HPV infection and HPV vaccination were evaluated in 63 individuals with FA while considering host immune factors. Approximately 30% of reportedly unvaccinated participants were seropositive (HPV6-38%, HPV11-25%, HPV16-26%, and HPV18-26%). Seropositivity was significantly associated with having had sex regardless of age (p=...
December 4, 2017: Vaccine
https://www.readbyqxmd.com/read/29040176/hpv-awareness-and-vaccination-rates-in-college-aged-male-athletes
#8
Tonna McCutcheon, Gina Schaar, Alan Herline, Rachel Hayes
College-aged males are at high risk for human papillomavirus (HPV); however, vaccination rates remain low, suggesting minimal HPV knowledge. Therefore, an educational intervention was developed and implemented to determine if an increase in HPV knowledge, perceived HPV risk, intention and perceived self-efficacy to obtain the vaccine, and vaccination rates were observed.
November 16, 2017: Nurse Practitioner
https://www.readbyqxmd.com/read/29027811/prevention-of-human-papillomavirus-hpv-related-tumors-in-people-living-with-human-immunodeficiency-virus-hiv
#9
Mario Poljak, Anja Šterbenc, Maja M Lunar
In comparison to their HIV-negative counterparts, people living with HIV (PLWH) have a higher prevalence of human papillomavirus (HPV) infection in various anatomical sites coupled with increased HPV persistence, higher risk of HPV-related tumors, and faster disease progression. Areas covered: Gender-neutral prevention strategies for HPV-related cancers in PLWH discussed: ABC approach, HPV vaccination, antiretroviral treatment (ART), anal cancer screening, and smoking cessation. Gender specific strategies: cervical cancer screening reduces the incidence and mortality of cervical cancer and circumcision might reduce the risk of HPV infections in men...
October 20, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29025500/the-influence-of-self-efficacy-in-medical-drama-television-programming-on-behaviors-and-emotions-that-promote-cervical-cancer-prevention
#10
Sungsu Kim, Jay D Hmielowski
OBJECTIVES: We explored the influences of medical drama viewing on health behaviors and emotions, and examined the role of self-efficacy in medical drama programming. METHODS: A single-factor, 2-condition experimental design that manipulated self-efficacy levels was adopted. A total of 131 female undergraduate students who were likely involved with the issues of HPV vaccination and cervical cancer participated in this experiment. RESULTS: In line with social cognitive theory, the results indicated that participants in the high self-efficacy condition showed greater behavioral intention to receive a Pap smear (F (1, 126) = 4...
November 1, 2017: American Journal of Health Behavior
https://www.readbyqxmd.com/read/29023748/what-cervical-screening-is-appropriate-for-women-who-have-been-vaccinated-against-high-risk-hpv-a-simulation-study
#11
Rebecca Landy, Peter Windridge, Matthew S Gillman, Peter D Sasieni
Women vaccinated against HPV16/18 are approaching the age for cervical screening, however an updated screening algorithm has not been agreed. We use a microsimulation model calibrated to real published data to determine the appropriate screening intensity for vaccinated women. Natural histories in the absence of vaccination were simulated for 300,000 women using 10,000 sets of transition probabilities. Vaccination with i) 100% efficacy against HPV16/18, ii) 15% cross-protection, iii) waning vaccine efficacy, and iv) 100% efficacy against HPV16/18/31/33/45/52/58 was added, as were a range of screening scenarios appropriate to the UK...
October 11, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28968844/human-papillomavirus-hpv-prevalence-in-male-adolescents-4-years-after-hpv-16-18-vaccination
#12
Tuomas Lehtinen, Anna Söderlund-Strand, Tiina Petäjä, Tiina Eriksson, Sakari Jokiranta, Kari Natunen, Joakim Dillner, Matti Lehtinen
We assessed human papillomavirus (HPV) prevalence among HPV-16/18-vaccinated and unvaccinated Finnish male adolescents participating in chlamydia screening 4 years after vaccination with AS04-adjuvanted HPV-16/18 vaccine in 2007-2009. Previously vaccinated (n = 395) or unvaccinated (n = 149) male adolescents were enrolled in 12 municipalities. First-void urine samples were tested for HPV types 6, 11, 16, 18, 31, 33, 35, 45, 51, 52, 56, 58, 59, 66, and 68, and prevalence rates for HPV-16/18, and HPV-11/16/18/31/33/45 were reduced profoundly (0% vs 2...
November 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28959092/naturally-occurring-capsid-protein-variants-l1-of-human-papillomavirus-genotype-16-in-morocco
#13
Aissam El-Aliani, My Abdelaziz El Alaoui, Imane Chaoui, My Mustapha Ennaji, Mohammed Attaleb, Mohammed El Mzibri
HPV L1 protein is a corner stone in HPV structure, it's involved in the formation of the viral capsid; widely used as a systematic material and considered as the main component in vaccines development and production. The present study aims to characterize genetic variation of L1 gene of HPV 16 specimens and to evaluate in silico the impact of major variants on the epitope change affecting its conformational structure. A fragment of L1 gene from 35 HPV 16 confirmed specimens were amplified by PCR and sequenced...
2017: Bioinformation
https://www.readbyqxmd.com/read/28956458/9-valent-human-papillomavirus-vaccine-a-review-of-the-clinical-development-program
#14
Alain Luxembourg, Erin Moeller
The 9-valent human papillomavirus (9vHPV) vaccine covers the same HPV types (6/11/16/18) as the quadrivalent HPV (qHPV) vaccine and 5 additional cancer-causing types (31/33/45/52/58). Epidemiological studies indicate that the 9vHPV vaccine could prevent approximately 90% of cervical cancers, 70-85% of high-grade cervical dysplasia (precancers), 85-95% of HPV-related vulvar, vaginal, and anal cancers, and 90% of genital warts. Areas covered: Study design features and key findings from the 9vHPV vaccine clinical development program are reviewed...
October 9, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28954299/durability-of-protection-afforded-by-fewer-doses-of-the-hpv16-18-vaccine-the-cvt-trial
#15
RANDOMIZED CONTROLLED TRIAL
Mahboobeh Safaeian, Joshua N Sampson, Yuanji Pan, Carolina Porras, Troy J Kemp, Rolando Herrero, Wim Quint, Leen Jan van Doorn, John Schussler, Douglas R Lowy, John Schiller, Mark T Schiffman, Ana Cecilia Rodriguez, Mitchell H Gail, Allan Hildesheim, Paula Gonzalez, Ligia A Pinto, Aimée R Kreimer
Background: Previously, we demonstrated similar human papillomavirus (HPV)16/18 vaccine efficacy estimates and stable HPV16/18 antibody levels four years postvaccination in a nonrandomized analysis of women who received a varying number of doses of the bivalent HPV16/18 vaccine. Here we extend data to seven years following initial vaccination. Methods: We evaluated HPV16/18-vaccinated women who received one (n = 134), two (n 0/1 = 193, n 0/6 = 79), or three doses (n = 2043) to a median of 6...
February 1, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28950675/cervical-cancer-prevention-through-hpv-vaccination-in-low-and-middle-income-countries-in-asia
#16
Zheng Quan Toh, Paul V Licciardi, Fiona M Russell, Suzanne M Garland, Tsetsegsaikhan Batmunkh, Edward K Mulholland
Cervical cancer is ranked the first or second most common cancer in women of low- and middle-income countries (LMICs) in Asia. Cervical cancer is almost exclusively caused by human papillomavirus (HPV), and majority of the cases can be prevented with the use of HPV vaccines. The HPV vaccines have demonstrated high vaccine efficacies against HPV infection and cervical cancer precursors in clinical and post-marketing studies, and are in use in most high-income countries. However, their use in LMICs are limited mainly due to the high costs and logistics in delivering multiple doses of the vaccine...
September 27, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28933635/factors-involved-in-human-papillomavirus-hpv-vaccine-hesitancy-among-women-in-the-south-east-asian-region-sear-and-western-pacific-region-wpr-a-scoping-review
#17
Diviya Santhanes, Che Pui Wong, Yan Ye Yap, Saw Pui San, Nathorn Chaiyakunapruk, Tahir Mehmood Khan
A scoping review was performed to identify factors that may lead to human papillomavirus (HPV) vaccine hesitancy among women in low- and middle-income countries in South East Asian Region (SEAR) and Western Pacific Region (WPR). A systematic search of English and non-English articles using Pubmed, EMBASE, PsycINFO, Cochrane, MEDLINE, and CINAHL plus was conducted. Only 63 studies conducted in SEAR and WPR were included from inception until December 2016. Results of these studies have shown that poor awareness and knowledge of practices on cervical cancer prevention was evident in both SEAR and WPR...
September 21, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28918994/meaningful-methods-for-increasing-human-papillomavirus-vaccination-rates-an%C3%A2-integrative-literature-review
#18
Kristin Vollrath, Susan Thul, Jenny Holcombe
Human papillomavirus (HPV) is the most common sexually transmitted infection in the United States and is a well-known cause of oropharyngeal, cervical, vaginal, vulvar, penile, and anal cancers. Despite the proven efficacy of the HPV vaccine, vaccination rates remain persistently low. Much literature has focused on attitudes toward the HPV vaccine; however, researchers have also investigated strategies clinicians can use to improve vaccination attitudes and acceptance. Such strategies include provider education, vaccine reminder/recall, and chart audit and feedback...
September 15, 2017: Journal of Pediatric Health Care
https://www.readbyqxmd.com/read/28918603/tumor-markers-of-uterine-cervical-cancer-a-new-scenario-to-guide-surgical-practice
#19
REVIEW
Gaetano Valenti, Salvatore Giovanni Vitale, Alessandro Tropea, Antonio Biondi, Antonio Simone Laganà
Since the introduction of Pap smear screening, the incidence and mortality of cervical cancer (CC) have been reduced drastically in USA and in other western states. Nevertheless, CC still remains the main cause of death from gynecological cancer in developing countries where screening programs are scant or inexistent. This evidence highlights the efficacy of screening, and the wide use of Human Papilloma Viruses (HPV) vaccines in developed countries. More and more people are, consequentially, undergoing a screening procedure, usually combined with HPV DNA test, increasing the early diagnosis of intraepithelial HPV-related lesions...
December 2017: Updates in Surgery
https://www.readbyqxmd.com/read/28916210/modelling-multi-site-transmission-of-the-human-papillomavirus-and-its-impact-on-vaccination-effectiveness
#20
P Lemieux-Mellouki, M Drolet, M Jit, G Gingras, M Brisson
OBJECTIVE: Previous HPV models have only included genital transmission, when evidence suggests that transmission between several anatomical sites occurs. We compared model predictions of population-level HPV vaccination effectiveness against genital HPV16 infection in women, using a 1) uni-site (genital site), and a 2) multi-site model (genital and one extragenital site). METHODS: We developed a uni-site and a multi-site deterministic HPV transmission model, assuming natural immunity was either site-specific or systemic...
August 25, 2017: Epidemics
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