scholarly journals Human Papillomavirus and Genital Disease in Men: What We Have Learned from the HIM Study

2019 ◽  
Vol 63 (2) ◽  
pp. 109-117 ◽  
Author(s):  
Laura Sichero ◽  
Anna R. Giuliano ◽  
Luisa Lina Villa
Keyword(s):  
Human Papillomavirus ◽  
Natural History ◽  
The United States ◽  
Hpv Infection ◽  
Clinical Consequences ◽  
History Of ◽  
Crucial Information ◽  
Associated Risk Factors ◽  
The Relationship ◽  
Genital Disease

It is currently recognized that in addition to the major impact of human papillomavirus (HPV) infection in females, HPV causes considerable disease in men at the genitals, anal canal, and oropharynx. Specifically, genital HPV infections may progress to genital warts and penile carcinoma. Although studies concerning the natural history of HPV infections and associated neoplasias have mainly focused on women, during the last 2 decades considerable attention has been given in further understanding these infections in men. The HIM (HPV infection in men) Study, the only prospective multicenter study of male HPV natural history, consisted of a large prospective international cohort study in which men from Brazil, the United States, and Mexico were enrolled. The design and protocols of this study allowed unraveling crucial information regarding the relationship between HPV infection and clinical consequences in men, and associated risk factors at each of the anatomic sites where HPV is known to cause cancer in men.

scholarly journals Polymorphism in the promoter region of the Toll-like receptor 9 gene and cervical human papillomavirus infection

2013 ◽  
Vol 94 (8) ◽  
pp. 1858-1864 ◽  
Author(s):  
Lucas Boeno Oliveira ◽  
Karolina Louvanto ◽  
Agnihotram V. Ramanakumar ◽  
Eduardo L. Franco ◽  
Luisa L. Villa ◽  
...  
Keyword(s):  
Human Papillomavirus ◽  
Natural History ◽  
Promoter Region ◽  
Pcr Amplification ◽  
Hpv Infection ◽  
Toll Like Receptor ◽  
Mediating Role ◽  
Papillomavirus Infection ◽  
Tlr9 Gene ◽  
History Of

Polymorphism in the Toll-like receptor (TLR) 9 gene has been shown to have a significant role in some diseases; however, little is known about its possible role in the natural history of human papillomavirus (HPV) infections. We investigated the association between a single-nucleotide polymorphism (SNP) (rs5743836) in the promoter region of TLR9 (T1237C) and type-specific HPV infections. Specimens were derived from a cohort of 2462 women enrolled in the Ludwig–McGill Cohort Study. We randomly selected 500 women who had a cervical HPV infection detected at least once during the study as cases. We defined two control groups: (i) a random sample of 300 women who always tested HPV negative, and (ii) a sample of 234 women who were always HPV negative but had a minimum of ten visits during the study. TLR9 genotyping was performed using bidirectional PCR amplification of specific alleles. Irrespective of group, the WT homozygous TLR9 genotype (TT) was the most common form, followed by the heterozygous (TC) and the mutant homozygous (CC) forms. There were no consistent associations between polymorphism and infection risk, either overall or by type or species. Likewise, there were no consistently significant associations between polymorphism and HPV clearance or persistence. We concluded that this polymorphism in the promoter region of TLR9 gene does not seem to have a mediating role in the natural history of the HPV infection.

scholarly journals Natural History of Cutaneous Human Papillomavirus (HPV) Infection in Men: The HIM Study

PLoS ONE ◽  
2014 ◽  
Vol 9 (9) ◽  
pp. e104843 ◽  
Author(s):  
Shalaka S. Hampras ◽  
Anna R. Giuliano ◽  
Hui-Yi Lin ◽  
Kate J. Fisher ◽  
Martha E. Abrahamsen ◽  
...  
Keyword(s):  
Human Papillomavirus ◽  
Natural History ◽  
Hpv Infection ◽  
History Of

scholarly journals Comparison of the Natural History of Genital HPV Infection among Men by Country: Brazil, Mexico, and the United States

2017 ◽  
Vol 26 (7) ◽  
pp. 1043-1052 ◽  
Author(s):  
Staci L. Sudenga ◽  
B. Nelson Torres ◽  
Roberto Silva ◽  
Luisa L. Villa ◽  
Eduardo Lazcano-Ponce ◽  
...  
Keyword(s):  
United States ◽  
Natural History ◽  
The United States ◽  
Hpv Infection ◽  
History Of

Sex Differences in the Incidence and Clearance of Anogenital Human Papillomavirus Infection in Liuzhou, China: An Observational Cohort Study

2019 ◽  
Vol 70 (1) ◽  
pp. 82-89 ◽  
Author(s):  
Feixue Wei ◽  
Meng Guo ◽  
Shoujie Huang ◽  
Mingqiang Li ◽  
Xuelian Cui ◽  
...  
Keyword(s):  
Sex Differences ◽  
Cohort Study ◽  
Human Papillomavirus ◽  
Natural History ◽  
Hpv Infection ◽  
Observational Cohort Study ◽  
Men And Women ◽  
History Of ◽  
Observational Cohort ◽  
Oncogenic Hpv

Abstract Background Human papillomavirus (HPV) causes anogenital warts and cancers in men and women. However, little is known about sex differences regarding the natural history of anogenital HPV infection. Methods Starting in May 2014, an observational cohort study including 2309 men and 2378 women aged 18–55 years was conducted in Liuzhou, China. Samples from anogenital sites were tested for HPV genotypes by multicolor real-time polymerase chain reaction and melting curve analysis biannually for ~1 year. Results The incidence of oncogenic HPV infection was similar in men and women (10.3 and 11.5/1000 person-months; P = .275), whereas the incidence of HPV-6/11 infection was higher in men than in women (2.0 vs 1.1; P = .018). The incidence of both oncogenic HPV and HPV-6/11 infections was significantly higher in women in the 18- to 25-year age group than in the older age groups (P = .006 and .011, respectively), whereas it did not vary by age among men (P = .552 and .425, respectively). Additionally, men were more likely than women to clear oncogenic infections (101.5 vs 58.6/1000 person-months; P < .001), but no significant difference was found in the clearance of HPV-6/11 by sex (111.7 vs 84.8; P = .266). The median time to clearance of oncogenic type and type 6/11 infections was not age dependent for either sex (all P > .05). Conclusions The natural history of oncogenic and nononcogenic HPV infection differs by sex, which implies that sex-specific vaccination strategies should be considered for oncogenic and nononcogenic HPV. Clinical Trials Registration NCT02188004.

The epidemiology and natural history of anal human papillomavirus infection in men who have sex with men

Sexual Health ◽  
2012 ◽  
Vol 9 (6) ◽  
pp. 527 ◽  
Author(s):  
Dorothy A. Machalek ◽  
Andrew E. Grulich ◽  
Fengyi Jin ◽  
David J. Templeton ◽  
I. Mary Poynten
Keyword(s):  
Risk Factors ◽  
Human Papillomavirus ◽  
Natural History ◽  
English Language ◽  
Epidemiological Data ◽  
Hpv Infection ◽  
Medline Search ◽  
Infection Dynamics ◽  
History Of ◽  
Sex With Men

Studies on the epidemiology and natural history of anal human papillomavirus (HPV) infection are essential to understand the significance of this virus in the aetiology of anal cancer in men who have sex with men (MSM). This paper presents a review of studies on anal HPV in MSM. For this review, a Medline search was performed to identify English-language articles published in peer-reviewed journals on the epidemiology, natural history and risk factors for anal HPV infection in MSM. Anal HPV prevalence is high in MSM and infection with multiple HPV types is common. The available prospective data suggest detection of new anal HPV infections may also be common. However, with limited epidemiological data available on infection dynamics and associated behavioural risk factors, it is difficult to draw conclusions on how persistent anal HPV infection is in this population.

scholarly journals Influence of Human Papillomavirus Infection on the Natural History of Cervical Intraepithelial Neoplasia 1: A Meta-Analysis

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Mingzhu Liu ◽  
Xiaolong Yan ◽  
Mei Zhang ◽  
Xiaoju Li ◽  
Shugang Li ◽  
...  
Keyword(s):  
Human Papillomavirus ◽  
High Risk ◽  
Natural History ◽  
Intraepithelial Neoplasia ◽  
Hpv Infection ◽  
Negative Group ◽  
Positive Group ◽  
Increased Risk ◽  
History Of ◽  
High Risk Hpv

Objective. To provide a scientific basis for the prevention and treatment of cervical intraepithelial neoplasia grade 1 (CIN1). This study evaluated the impact of human papillomavirus (HPV) infection on the natural history of CIN1. Methods. Electronic databases of Cochrane Library, EMBASE, PubMed, CNKI, CBM, and Wanfang were searched in April 2016. The eligibility criteria were documented by Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). We used the Newcastle-Ottawa scale (NOS) to assess study quality. Results. Thirty-eight studies out of 3,246 identified papers were eligible for inclusion. The risk of CIN1 progression (relative risk [RR]: 3.04; 95% confidence interval [CI]: 2.41–3.83; P<0.00001) and persistence (RR: 1.48; 95% CI: 1.17–1.87; P=0.001) was higher in the HPV-positive group than HPV-negative group. Specifically, the risk of CIN1 progression (RR: 13.91; 95% CI: 3.46–55.90; P=0.000) was higher among persistent high-risk HPV-positive patients and the ratio of CIN1 regression (RR: 0.65; 95% CI: 0.59–0.71; P<0.00001) was lower in the HPV-positive group than HPV-negative group. Conclusion. HPV infection resulted in an increased risk of CIN1 progression and decreased disease reversibility. Persistent high-risk HPV infection resulted in a further increased risk of CIN1 progression.

A combined ultrastructural and gene molecular research for the relationship between human uterine cervical carcinoma and human papillomavirus

1990 ◽  
Vol 48 (3) ◽  
pp. 204-205
Author(s):  
Kun Lee ◽  
Jingyi Si ◽  
Ricai Han ◽  
Wei Zhang ◽  
Bingbing Tan ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Human Papillomavirus ◽  
Intraepithelial Neoplasia ◽  
Hpv Infection ◽  
Dot Blot ◽  
Homologous Sequences ◽  
Normal Cervical Epithelium ◽  
The Relationship ◽  
Chronic Cervicitis

There are more supports for the view that human papillomavirus (HPV) infection might be an etiological factor in the development of cervical cancer when the association of persistent condylomata is considered. Biopsies from 318 cases with squamous cell carcinoma of uterine cervix, 48 with cervical and vulvar condylomata, 14 with cervical intraepithelial neoplasia (CIN), 34 with chronic cervicitis and 24 normal cervical epithelium were collected from 5 geographic regions of China with different cervical cancer mortalities. All specimens were prepared for Dot blot, Southern blot and in situ DNA-DNA hybridizations by using HPV-11, 16, 18 DNA labelled with 32P and 3H as probes to detect viral homologous sequences in samples. Among them, 32 cases with cervical cancer, 27 with condyloma and 10 normal cervical epitheliums were randomly chosen for comparative EM observation. The results showed that: 1), 192 out of 318 (60.4%) cases of cervical cancer were positive for HPV-16 DNA probe (Table I)

From Competition to Cooperation: A History of Canada–US National Park Relations

2019 ◽  
Author(s):  
Terence Young ◽  
Alan MacEachern ◽  
Lary Dilsaver
Keyword(s):  
National Parks ◽  
National Park ◽  
The United States ◽  
The Us ◽  
Park Service ◽  
Settler Societies ◽  
History Of ◽  
Relationship Of ◽  
Flow Of Information ◽  
The Relationship

This essay explores the evolving international relationship of the two national park agencies that in 1968 began to offer joint training classes for protected-area managers from around the world. Within the British settler societies that dominated nineteenth century park-making, the United States’ National Park Service (NPS) and Canada’s National Parks Branch were the most closely linked and most frequently cooperative. Contrary to campfire myths and nationalist narratives, however, the relationship was not a one-way flow of information and motivation from the US to Canada. Indeed, the latter boasted a park bureaucracy before the NPS was established. The relationship of the two nations’ park leaders in the half century leading up to 1968 demonstrates the complexity of defining the influences on park management and its diffusion from one country to another.

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