scholarly journals Papillomavirus can be transmitted through the blood and produce infections in blood recipients: Evidence from two animal models

2019 ◽  
Author(s):  
Nancy M. Cladel ◽  
Pengfei Jiang ◽  
Jingwei J. Li ◽  
Xuwen Peng ◽  
Timothy K. Cooper ◽  
...  
Keyword(s):  
Animal Models ◽  
Hpv Infection ◽  
Human Papillomaviruses ◽  
Viral Dna ◽  
Internal Organs ◽  
Sexually Transmitted ◽  
Potential Source ◽  
Papillomavirus Infection ◽  
Blood Banks ◽  
Gain Access

AbstractHuman papillomavirus (HPV) infections are commonly thought to be strictly sexually transmitted. However, studies have demonstrated the presence of HPV in cancers of many non-sexual internal organs, raising the question as to how the viruses gain access to these sites. A possible connection between blood transfusion and HPV-associated disease has not received much attention. We show, in two animal models, that blood infected with papillomavirus yields infections at permissive sites. Furthermore, we demonstrate that blood from actively infected mice can transmit the infection to naïve animals. Finally, we report papillomavirus infections in the stomach tissues of animals infected via the blood. Stomach tissues are not known to be permissive for papillomavirus infection, although the literature suggests that HPVs may be associated with a subset of gastric cancers. These results indicate that the human blood supply, which is not screened for papillomaviruses, could be a potential source of HPV infection and subsequent cancers.SUMMARYHuman papillomaviruses cause 5% of human cancers. Currently, blood banks do not screen for these viruses. We demonstrate that blood transfused from papillomavirus-infected animals produces infections in recipients. Public health implications are significant if the same is true for humans.DefinitionsLocal papillomavirus infection:An infection initiated by the direct application of virus or viral DNA to the site of infectionIntravenous (IV) papillomavirus infection:An infection resulting from blood-borne delivery of virus or viral DNA to the site of infection.

scholarly journals The Epidemiology of Human Papillomavirus Infection and Cervical Cancer

2007 ◽  
Vol 23 (4) ◽  
pp. 213-227 ◽  
Author(s):  
F. Xavier Bosch ◽  
Silvia de Sanjosé
Keyword(s):  
Cervical Cancer ◽  
Invasive Cervical Cancer ◽  
Intraepithelial Neoplasia ◽  
Hpv Infection ◽  
Human Papillomaviruses ◽  
Transmitted Infection ◽  
Hpv Dna ◽  
Sexually Transmitted ◽  
Papillomavirus Infection ◽  
Simplex Virus

Cervical cancer has been recognized as a rare outcome of a common Sexually Transmitted Infection (STI). The etiologic association is restricted to a limited number of viral types of the family of the Human Papillomaviruses (HPVs). The association is causal in nature and under optimal testing systems, HPV DNA can be identified in all specimens of invasive cervical cancer. As a consequence, it has been claimed that HPV infection is a necessary cause of cervical cancer. The evidence is consistent worldwide and implies both the Squamous Cell Carcinomas (SCC), the adenocarcinomas and the vast majority (i.e. > 95%) of the immediate precursors, namely High Grade Squamous Intraepithelial Lesions (HSIL)/Cervical Intraepithelial Neoplasia 3 (CIN3)/Carcinomain situ. Co-factors that modify the risk among HPV DNA positive women include the use of oral contraceptives (OC) for five or more years, smoking, high parity (five or more full term pregnancies) and previous exposure to other sexually transmitted diseases such as Chlamydia Trachomatis (CT) and Herpes Simplex Virus type 2 (HSV-2). Women exposed to the Human Immunodeficiency Virus (HIV) are at high risk for HPV infection, HPV DNA persistency and progression of HPV lesions to cervical cancer.

Papillomavirus infection and reproduction

2020 ◽  
Vol 75 (3) ◽  
pp. 189-195
Author(s):  
Vladislav I. Krasnopolsky ◽  
Nina V. Zarochentseva ◽  
Ksenia V. Krasnopolskaya ◽  
Yulia N. Bashankaeva ◽  
Varvara S. Kuzmicheva
Keyword(s):  
Human Papillomavirus ◽  
Hpv Vaccination ◽  
Carcinogenic Risk ◽  
Human Papillomaviruses ◽  
World Health ◽  
Sexually Transmitted ◽  
Associated Diseases ◽  
Trophoblastic Cells ◽  
Papillomavirus Infection ◽  
Health Organization

The purpose of the review a synthesis of research data on the role of human papillomavirus infection in the reproductive health of women and men. Key Points. Human papillomavirus (HPV) is one of the most common sexually transmitted viruses worldwide. According to the World Health Organization, HPV is the main cause of the development of HPV-associated diseases among both women and men. Viruses are subdivided into HPV with low carcinogenic risk, which cause benign warts, and HPV with high carcinogenic risk, which cause cancer. Different types of human papillomaviruses depending on their characteristic tropism, are divided into skin and mucous types. Viral infection in men leads to a decrease in the quality of sperm (for example, asthenozoospermia) due to apoptosis in sperm cells and due to the development of antisperm immunity. A negative viral effect on the fertility of women is manifested in an increase in the frequency of spontaneous miscarriages and a premature rupture of the amniotic membranes during pregnancy. There is evidence that HPV decreases the number of trophoblastic cells and abnormal trophoblastic-endometrial adhesion is also observed. In trophoblastic cells transfected with high-risk HPV, the level of apoptosis increases. HPV vaccination is safe, and the results show not only protection against HPV-associated diseases in women and men, but also a reduction of gestational complications, reduced preterm birth rates and the protection of newborns from infection.

Risk factors associated with human papillomavirus infection status in a Korean cohort

2013 ◽  
Vol 142 (8) ◽  
pp. 1579-1589 ◽  
Author(s):  
H. LEE ◽  
D.-H. LEE ◽  
Y.-M. SONG ◽  
K. LEE ◽  
J. SUNG ◽  
...  
Keyword(s):  
Risk Factors ◽  
Human Papillomavirus ◽  
Contraceptive Use ◽  
Transmitted Disease ◽  
Multivariate Regression Analysis ◽  
Hpv Infection ◽  
Sexually Transmitted ◽  
Papillomavirus Infection ◽  
Behavioural Factors ◽  
Epidemiological Characteristics

SUMMARYBy surveying extensive epidemiological behavioural and sexual risk factors in a Korean twin cohort, risk factors for human papillomavirus (HPV) infection were investigated in South Korea. A total of 912 vaginal specimens were collected from the Healthy Twin Study, consisting of twins and their families. A range of epidemiological, behavioural, and sexual activity characteristics were evaluated using multivariate logistic regression analyses of family and twin relationships, adjusted to elucidate the risk factors for HPV infection. Of the various epidemiological characteristics, the possibility of extramarital affairs [odds ratio (OR) 2·48, 95% confidence interval (CI) 1·02–6·02] significantly increased the prevalence of HPV infection. Our multivariate regression analysis indicated that oral contraceptive use (OR 40·64, 95% CI 0·99–1670·7) and history of sexually transmitted disease (OR 2·56, 95% CI 0·93–7·10) were strongly associated with an increase in HPV infection. On the other hand, more frequent vaginal douching (OR 0·32, 95% CI 0·13–0·77) significantly decreased the prevalence of HPV infection. Our results suggested that HPV infection is associated with both biological and behavioural factors.

scholarly journals Benefits of Gender-Neutral Vaccination Strategy for the Prevention of HPV-Associated Diseases and the Eradication of HPV Infection in General. Current State of HPV Vaccination in the World

2021 ◽  
Vol 18 (3) ◽  
pp. 239-244
Author(s):  
Tatiana E. Privalova ◽  
Olga V. Surovtseva ◽  
Dmitry V. Andriyanov
Keyword(s):  
Hpv Vaccination ◽  
Vaccination Strategy ◽  
Hpv Infection ◽  
Transmitted Infection ◽  
Sexually Transmitted ◽  
Associated Diseases ◽  
Current State ◽  
Papillomavirus Infection ◽  
The World ◽  
Gender Neutral

Papillomavirus infection (HPV infection) is the leading sexually transmitted infection in prevalence. HPV infection and associated diseases, including cancer, remain one of the global problems of our time. This literature review presents relevant data from foreign studies and domestic works on the state of HPV vaccination in the world, the modern vaccines efficacy for the HPV-associated diseases prevention, current vaccination strategies and their efficacy as well. The aim of the article is to determine the advantages of using gender-neutral vaccination strategy over priority-used vaccination strategy for girls only in the prevention of HPV-associated diseases, including cancer, as well as for eradicating HPV infection in general.

Human Papillomavirus Infection and Prevention In The Adolescent

2020 ◽  
Author(s):  
Alexandria Richards ◽  
Joanna Stacey
Keyword(s):  
Human Papillomavirus ◽  
Hpv Vaccination ◽  
Transmitted Disease ◽  
Cervical Dysplasia ◽  
Vaccine Safety ◽  
Genital Warts ◽  
Hpv Infection ◽  
Sexually Transmitted ◽  
Papillomavirus Infection

Human papillomavirus, or HPV, is a common sexually transmitted disease, most often acquired during the adolescence or the early 20s. It can be divided into oncogenic and nononcogenic serotypes. It is responsible for genital warts as well as pathologic diseases that can lead to genital cancers and cancers of the oropharyngeal tract in both males and females. The majority of adolescents who acquire HPV infections do not go on to develop cancer. New discoveries about the virus’ persistence and latency direct how we treat adolescents with HPV infections. Recommendations for prevention of HPV include use of the 9-valent vaccine against the most common oncogenic HPV serotypes. Screening should be delayed until the age of 21, with the exception of immunocompromised women. The HPV vaccination is safe and effective, and does not encourage sexual activity among adolescents. Both boys and girls should be vaccinated against HPV at 11 to 12 years of age but may receive the vaccination as early as 9 or as late as 21 (males) or 26 (females) years of age. The vaccine may now also be given in only two doses if the series was started before the age of 15. Follow-up studies in the years after the vaccine’s introduction have shown large decreases in HPV infection rates. This review contains 7 figures, 7 tables and 63 references Key Words: Oncogenic subtype, Oropharyngeal cancer, Infection persistence, Immune tolerance, Cervical dysplasia, Genital warts, 9-valent vaccine, Vaccine safety  

scholarly journals Prevalence of human papillomavirus infection in rural villages of the Bolivian Amazon

2003 ◽  
Vol 45 (3) ◽  
pp. 131-135 ◽  
Author(s):  
Jorge Cervantes ◽  
Carolina Lema ◽  
Luisa Hurtado ◽  
Ronald Andrade ◽  
Gladys Quiroga ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Hpv Infection ◽  
Human Papillomaviruses ◽  
Infection Prevalence ◽  
Lifestyle Behaviors ◽  
Major Health Problem ◽  
Rural Villages ◽  
Papillomavirus Infection ◽  
Bolivian Amazon ◽  
High Incidence

Cervical cancer constitutes a major health problem in developing countries like Bolivia. The roles of certain genotypes of human papillomaviruses (HPVs) in the pathogenesis of cervical cancer is well established. The prevalence of HPV infection among sexually active women varies greatly. Information regarding HPV infection in Bolivia is very much scarce, specially in regions like the Amazonian lowland. We studied 135 healthy women living in four rural localities of the Bolivian Amazon. Presence of HPV in DNA extracted from cervical swabs was analyzed using a reverse line hybridization assay. The estimated overall HPV infection prevalence among the studied rural localities was 5.9% (ranging from 0-16.6%). These values were unexpectedly low considering Bolivia has a high incidence of cervical cancer. The fact that Amazonian people seem to be less exposed to HPV, makes it likely that some other risk factors including host lifestyle behaviors and genetic background may be involved in the development of cervical cancer in this population.

scholarly journals Vesicular trafficking permits evasion of cGAS/STING surveillance during initial human papillomavirus infection

2020 ◽  
Vol 16 (11) ◽  
pp. e1009028
Author(s):  
Brittany L. Uhlorn ◽  
Robert Jackson ◽  
Shuaizhi Li ◽  
Shauna M. Bratton ◽  
Koenraad Van Doorslaer ◽  
...  
Keyword(s):  
Viral Entry ◽  
Hpv Infection ◽  
Vesicular Trafficking ◽  
Cationic Lipids ◽  
Human Papillomaviruses ◽  
Cell Nuclei ◽  
Dna Viruses ◽  
Papillomavirus Infection ◽  
Defective Mutant ◽  
Microbial Infections

Oncogenic human papillomaviruses (HPVs) replicate in differentiating epithelium, causing 5% of cancers worldwide. Like most other DNA viruses, HPV infection initiates after trafficking viral genome (vDNA) to host cell nuclei. Cells possess innate surveillance pathways to detect microbial components or physiological stresses often associated with microbial infections. One of these pathways, cGAS/STING, induces IRF3-dependent antiviral interferon (IFN) responses upon detection of cytosolic DNA. Virion-associated vDNA can activate cGAS/STING during initial viral entry and uncoating/trafficking, and thus cGAS/STING is an obstacle to many DNA viruses. HPV has a unique vesicular trafficking pathway compared to many other DNA viruses. As the capsid uncoats within acidic endosomal compartments, minor capsid protein L2 protrudes across vesicular membranes to facilitate transport of vDNA to the Golgi. L2/vDNA resides within the Golgi lumen until G2/M, whereupon vesicular L2/vDNA traffics along spindle microtubules, tethering to chromosomes to access daughter cell nuclei. L2/vDNA-containing vesicles likely remain intact until G1, following nuclear envelope reformation. We hypothesize that this unique vesicular trafficking protects HPV from cGAS/STING surveillance. Here, we investigate cGAS/STING responses to HPV infection. DNA transfection resulted in acute cGAS/STING activation and downstream IFN responses. In contrast, HPV infection elicited minimal cGAS/STING and IFN responses. To determine the role of vesicular trafficking in cGAS/STING evasion, we forced premature viral penetration of vesicular membranes with membrane-perturbing cationic lipids. Such treatment renders a non-infectious trafficking-defective mutant HPV infectious, yet susceptible to cGAS/STING detection. Overall, HPV evades cGAS/STING by its unique subcellular trafficking, a property that may contribute to establishment of infection.

scholarly journals HPV infection in semen: results from a new molecular approach

2019 ◽  
Vol 147 ◽  
Author(s):  
G. Capra ◽  
R. Schillaci ◽  
L. Bosco ◽  
M. C. Roccheri ◽  
A. Perino ◽  
...  
Keyword(s):  
Clinical Manifestations ◽  
Hpv Infection ◽  
Viral Dna ◽  
New Approach ◽  
Hpv Dna ◽  
Sexually Transmitted ◽  
Viral Genomes ◽  
Hpv Genotypes ◽  
Oncogenic Hpv

AbstractHuman papillomavirus (HPV) is the agent of the most common sexually transmitted diseases causing a variety of clinical manifestations ranging from warts to cancer. Oncogenic HPV infection is the major cause of cervical cancer and less frequently of penile cancers. Its presence in semen is widely known, but the effects on fertility are still controversial. We developed a new approach to evaluate virus localisation in the different semen components. We analysed also the specific genotype localisation and viral DNA quantity by qPCR. Results show that HPV DNA can be identified in every fraction of semen: spermatozoa, somatic cells and seminal plasma. Different samples can contain the HPV DNA in different fractions and several HPV genotypes can be found in the same fraction. Additionally, different fractions may contain multiple HPV genotypes in different relative quantity. We analysed the wholeness of HPV DNA in sperm cells by qPCR. In one sample more than half of viral genomes were defective, suggesting a possible recombination event. The new method allows to easily distinguish different sperm infections and to observe the possible effects on semen. The data support the proposed role of HPV in decreased fertility and prompt new possible consequences of the infection in semen.

scholarly journals Episome partitioning and symmetric cell divisions: Quantifying the role of random events in the persistence of HPV infections

2021 ◽  
Vol 17 (9) ◽  
pp. e1009352
Author(s):  
Thomas Beneteau ◽  
Christian Selinger ◽  
Mircea T. Sofonea ◽  
Samuel Alizon
Keyword(s):  
Hpv Infection ◽  
Human Papillomaviruses ◽  
Relative Importance ◽  
Oncogenic Viruses ◽  
Sexually Transmitted ◽  
Cell Divisions ◽  
Random Events ◽  
Stem Cell Division ◽  
Underlying Mechanisms

Human Papillomaviruses (HPV) are one of the most prevalent sexually transmitted infections (STI) and the most oncogenic viruses known to humans. The vast majority of HPV infections clear in less than 3 years, but the underlying mechanisms, especially the involvement of the immune response, are still poorly known. Building on earlier work stressing the importance of randomness in the type of cell divisions in the clearance of HPV infection, we develop a stochastic mathematical model of HPV dynamics that combines the previous aspect with an explicit description of the intracellular level. We show that the random partitioning of virus episomes upon stem cell division and the occurrence of symmetric divisions dramatically affect viral persistence. These results call for more detailed within-host studies to better understand the relative importance of stochasticity and immunity in HPV infection clearance.

scholarly journals Knowledge and awareness of nursing students regarding Human papillomaviruses infection and vaccination

2021 ◽  
pp. 58-58
Author(s):  
Suzana Mlinar
Keyword(s):  
Nursing Students ◽  
Sexually Transmitted Infection ◽  
Public Awareness ◽  
Hpv Infection ◽  
Cross Sectional Study ◽  
Vaccination Rate ◽  
Human Papillomaviruses ◽  
Transmitted Infection ◽  
Cross Sectional ◽  
Sexually Transmitted

Background/Aim: Human papillomaviruses (HPV) is the most common sexually transmitted infection. Most HPV infections are transient and asymptomatic. Routine vaccination against HPV is the best prophylaxis against HPV infection. The aim of present study was to determine knowledge and risk factors about HPV infection, and the attitudes towards vaccination against HPV infection among nursing students. Methods: This cross-sectional study was conducted in a random sample of 175 nursing students. For statistical data analysis was done with t-test for and Mann-Whitney U test. Results: Most respondents (93.1%) knew that HPV infection may cause cervical cancer, and that it is a sexually transmitted infection (80.0%). Only 31.4% were aware that HPV may cause head and neck cancer and only 22.9% were aware that smoking is a risk factor for HPV infection. Male respondents (p=<0.05) and third-year respondents (p=<0.05) were significantly aware that men can be infected with HPV. Third-year respondents were significantly aware that early sexual intercourse increases the risk of HPV infection (p=<0.05), that HPV infection can be asymptomatic (p=<0.05). Respondents below 26 years (p=<0.05) and first-year respondents (p=<0.05) were significantly aware that men can also be vaccinated against HPV infection. Conclusion: The present study found that the respondents emphasised the importance of health education by nurses and vaccination against HPV infection. Due to the low vaccination rate of the population, preventive measures are needed to increase public awareness about vaccination against HPV, for which nurses are also responsible.

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