scholarly journals Clinical implications of alpha, beta, and gamma HPV infection in juvenile onset recurrent respiratory papillomatosis

2021 ◽  
Author(s):  
Martina Bertinazzi ◽  
Tarik Gheit ◽  
Jerry Polesel ◽  
Sandrine McKay-Chopin ◽  
Cesare Cutrone ◽  
...  
Keyword(s):  
Small Sample Size ◽  
Hpv Infection ◽  
Recurrent Respiratory Papillomatosis ◽  
Small Sample ◽  
Clinical Severity ◽  
Double Infection ◽  
Juvenile Onset ◽  
Hpv Dna ◽  
Alpha Beta ◽  
Severity Of The Disease

Abstract Purpose The aim of our study was to evaluate the prevalence of different HPV genera—alpha, beta and gamma—in Juvenile onset Recurrent Respiratory Papillomatosis (JoRRP) and examine the association of type and genus-specific viral features with the clinical outcome of disease. Methods This retrospective observational study included consecutive patients with JoRRP who were treated in a referral centre between October 2000 and October 2020. All patients underwent cold excision and laser vaporisation of papillomatous lesions. Samples were analysed for the presence of 120 viral genotypes (22 alpha-HPV, 46 beta-HPV, 52 gamma-HPV) using a highly sensitive multiplex genotyping assay. Results Twenty patients with JoRRP, aged 0.3–11 years, were included, with a median follow-up of 13.5 years. All samples were HPV DNA positive: 20 (100%) for alpha-HPV DNA; 7 (35%) for beta—HPV DNA; 0 for gamma-HPV DNA. Three groups were defined according to the number of infections: seven cases (35%) with HPV mono-infection; ten cases (50%) with HPV double-infection; three cases (15%) with ≥ 3 HPV infections. At diagnosis, patients with ≥ 3 HPV infections reported higher median Derkay’s score than those with mono-infection (21 vs 14, P = 0.018). Number of HPV infections was also associated with clinical outcomes, with an average of 0.5 surgical procedures/year in patients with mono-infection, 1.2 for double-infection, 2.6 for ≥ 3 infections (P = 0.006). Conclusion Despite the small sample size, these preliminary data support an association between the number of different alpha and beta HPV co-infections and the clinical severity of the disease.

scholarly journals Alpha, Beta, and Gamma HPV Infection in Juvenile Onset Recurrent Respiratory Papillomatosis

2021 ◽  
Author(s):  
Martina Bertinazzi ◽  
Tarik Gheit ◽  
Jerry Polesel ◽  
Sandrine McKay-Chopin ◽  
Cesare Cutrone ◽  
...  
Keyword(s):  
Small Sample Size ◽  
Hpv Infection ◽  
Recurrent Respiratory Papillomatosis ◽  
Small Sample ◽  
Clinical Severity ◽  
Laser Vaporization ◽  
Double Infection ◽  
Juvenile Onset ◽  
Hpv Dna ◽  
Alpha Beta

Abstract Purpose The aim of our study is to evaluate the prevalence of different HPV genera – alpha, beta and gamma – in Juvenile onset Recurrent Respiratory Papillomatosis (JoRRP) and examine the association of type and genus-specific viral features with the clinical outcome of disease. Methods This retrospective observational study includes consecutive patients with JoRRP who were treated in a referral centre between October 2000 and October 2020. All patients underwent cold excision and laser vaporization of papillomatous lesions. Samples were analysed for the presence of 120 viral genotypes (22 alpha-HPV, 46 beta-HPV, 52 gamma-HPV) using a highly sensitive multiplex genotyping assay. Results Twenty patients with JoRRP, aged 0.3–11 years old, were included, with a median follow-up of 13.5 years. All samples were HPV DNA positive: 20 (100%) for alpha-HPV DNA; 7 (35%) for beta – HPV DNA; 0 for gamma-HPV DNA. Three groups were defined according to the number of infections: seven cases (35%) with HPV mono-infection; ten cases (50%) with HPV double-infection; three cases (15%) with ≥ 3 HPV infections. At diagnosis, patients with ≥ 3 HPV infections reported higher median Derkay’s score than those with mono-infection (21 vs 14, P = 0.018). Number of HPV infections was also associated with clinical outcomes, with an average of 0.5 surgical procedures/year in patients with mono-infection, 1.2 for double-infection, 2.6 for ≥ 3 infections (P = 0.006). Conclusion Despite the small sample size, these preliminary data support an association between the number of different alpha and beta HPV co-infections and the clinical severity of the disease.

scholarly journals HPV Strain Predicts Severity of Juvenile-Onset Recurrent Respiratory Papillomatosis with Implications for Disease Screening

Cancers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 2556
Author(s):  
Mary C. Bedard ◽  
Alessandro de Alarcon ◽  
Yann-Fuu Kou ◽  
David Lee ◽  
Alexandra Sestito ◽  
...  
Keyword(s):  
Gene Expression ◽  
Disease Severity ◽  
Disease Onset ◽  
Tissue Bank ◽  
Benign Neoplasm ◽  
Recurrent Respiratory Papillomatosis ◽  
Clinical Severity ◽  
Viral Gene ◽  
Juvenile Onset ◽  
Severity Scores

Juvenile-onset recurrent respiratory papillomatosis (JoRRP) is the most common benign neoplasm of the larynx in children, presenting with significant variation in clinical course and potential for progression to malignancy. Since JoRRP is driven by human papillomavirus (HPV), we evaluated viral factors in a prospective cohort to identify predictive factors of disease severity. Twenty children with JoRRP undergoing routine debridement of papillomas were recruited and followed for ≥1 year. Demographical features, clinical severity scores, and surgeries over time were tabulated. Biopsies were used to establish a tissue bank and primary cell cultures for HPV6 vs. HPV11 genotyping and evaluation of viral gene expression. We found that patients with HPV11+ disease had an earlier age at disease onset, higher frequency of surgeries, increased number of lifetime surgeries, and were more likely to progress to malignancy. However, the amplitude of viral E6/E7 gene expression did not account for increased disease severity in HPV11+ patients. Determination of HPV strain is not routinely performed in the standard of care for JoRRP patients; we demonstrate the utility and feasibility of HPV genotyping using RNA-ISH for screening of HPV11+ disease as a biomarker for disease severity and progression in JoRRP patients.

Detection of Human Papillomavirus Infection in Diseased and Nondiseased Sites of the Respiratory Tract in Recurrent Respiratory Papillomatosis Patients by DNA Hybridization

1992 ◽  
Vol 101 (5) ◽  
pp. 408-412 ◽  
Author(s):  
Shirley Pignatari ◽  
Elaine M. Smith ◽  
Cynthia Shive ◽  
Steven D. Gray ◽  
Lubomir P. Turek
Keyword(s):  
Human Papillomavirus ◽  
Respiratory Tract ◽  
Dna Hybridization ◽  
Hpv Infection ◽  
Recurrent Respiratory Papillomatosis ◽  
Hpv Dna ◽  
Clinically Normal ◽  
Papillomavirus Infection ◽  
Hybridization Procedure ◽  
Cervical Trachea

We examined 12 recurrent respiratory papillomatosis patients, who were undergoing treatment for recurrence of their disease, for the presence of human papillomavirus (HPV). Biopsies were obtained from their respiratory papillomas and nondiseased sites (NDS) of the respiratory tract: the nasopharynx, posterior tonsillar pillar, aryepiglottic fold, cervical trachea, intrathoracic trachea, and bronchi. The presence of HPV DNA was determined by using the ViraPap/ViraType DNA hybridization procedure. Two thirds of the patients were infected with HPV 6/11 in either the diseased papilloma or NDS: 50% of patients with papilloma specimens typed positive (6 of 12), and 40% of the patients typed HPV-positive in one or more biopsies from the NDS (4 of 10). No single NDS was more likely to be infected with HPV than any other. No oncogenic HPV types 16/18 or 31/33/35 were detected in the papillomas or NDS of these patients. Only patients with multiple, and not isolated, papilloma involvement were found to harbor HPV DNA in NDS; and 80 % of those with infected NDS, compared to 20 % of those without infected NDS, required a shorter (no more than 3 months) surgical treatment interval. Our results show that HPV infection frequently persists in adjacent, clinically normal sites, and suggest that the extent of NDS involvement may predict both the extent of disease and the likelihood of recurrence.

scholarly journals Oral sex and oral cancer in the context of human papillomavirus infection: lay public understanding

2011 ◽  
Vol 4 (3) ◽  
pp. 171
Author(s):  
Mario A. Brondani ◽  
Mario A. Cruz-Cabrera ◽  
Cheryle Colombe
Keyword(s):  
Human Papillomavirus ◽  
Sexual Orientation ◽  
Oral Cancer ◽  
Small Sample Size ◽  
Hpv Infection ◽  
Small Sample ◽  
Public Understanding ◽  
Sexual Practices ◽  
Cancer Development ◽  
Oral Sex

Human papillomavirus (HPV) is a risk factor for ano-genital and cervical cancers and has been associated with head and neck malignancies in the context of oral sex for the transmission of the virus. However, the level of knowledge that lay people have in terms of HPV transmission through oral sex and oral cancer development remains unknown. A pilot sample of 150 questionnaires was distributed at specific non-profit health organizations in Vancouver, Canada. Questions included perceived risks for oral sex in terms of HPV infection and oral cancer development, and the frequency with which respondents were asked about oral sexual practices by physicians and dentists. Data were analysed statistically by age group (19– 30, 31–50, 50\), gender (male, female), and sexual orientation (queer, straight). 110 questionnaires were returned fully completed. For the transmission of HPV, 58% of the participants believed that oral sex is an activity of no or low risk, whereas 72% considered the same activity to be of no risk for the development of oral cancer. There was no statistical difference between gender and sexual orientation. Participants never discussed related health risks in regard to oral sex with their physicians or dentists. In conclusion, although recent attention has been given to the potential links between HPV infection and oral cancer, such links remain mostly unknown by the public. Physicians and dentists could discuss oral sex practices to raise awareness with their patients. This is a small sample size study and the results should be interpreted with caution.

scholarly journals Laryngopharyngeal Reflux Is a Potential Risk Factor for Juvenile-Onset Recurrent Respiratory Papillomatosis

2019 ◽  
Vol 2019 ◽  
pp. 1-5 ◽  
Author(s):  
Martin Formánek ◽  
Pavel Komínek ◽  
Debora Jančatová ◽  
Lucia Staníková ◽  
Radoslava Tomanová ◽  
...  
Keyword(s):  
Risk Factor ◽  
Laryngopharyngeal Reflux ◽  
Case Series ◽  
Hpv Infection ◽  
Recurrent Respiratory Papillomatosis ◽  
Tobacco Smoke Exposure ◽  
Tertiary Referral Hospital ◽  
Juvenile Onset ◽  
Maternal Risk ◽  
Case Series Study

Introduction. Human papillomavirus (HPV) causes juvenile-onset recurrent respiratory papillomatosis (JORRP). Although HPV is common in children, the prevalence of JORRP is low. It is likely that other factors contribute to the pathogenesis of JORRP, during either activation or reactivation of a latent HPV infection. There is evidence that laryngopharyngeal reflux (LPR) might be such a risk factor for adult-onset recurrent respiratory papillomatosis. This study investigated if LPR might also be a risk factor for JORRP.Materials and Methods.Children with JORRP of the larynx that required microlaryngoscopy at a tertiary referral hospital were included in this prospective case-series study from November 2015 to November 2017. Using immunohistochemistry, HPV infection and pepsin associated with LPR were diagnosed from laryngeal biopsies.Results.Eleven children (aged 4-14 years) were analyzed. No patient had a history of immunodeficiency or tobacco smoke exposure. All patients underwent at least three previous surgeries due to JORRP and had been vaccinated against HPV in the past. Five children were treated using antivirotics and immunomodulators. The only known maternal risk factor was that three mothers were primiparous. All 11 samples were infected with HPV (type 6 or 11). Pathologic LPR was diagnosed in 5/11 children (45.5%).Conclusion.LPR may be a risk factor for JORRP, contributing to its development by activating or reactivating a latent HPV infection. Results are in accordance with those from our previous study in adults.

scholarly journals HPV-Induced Oropharyngeal Cancer and the Role of the E7 Oncoprotein Detection via Brush Test

Cancers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2388
Author(s):  
Wegene Borena ◽  
Volker H. Schartinger ◽  
Jozsef Dudas ◽  
Julia Ingruber ◽  
Maria C. Greier ◽  
...  
Keyword(s):  
Predictive Value ◽  
Small Sample Size ◽  
Sandwich Elisa ◽  
Reference Method ◽  
Diagnostic Value ◽  
Test System ◽  
Elisa Test ◽  
Small Sample ◽  
Hpv Dna ◽  
E7 Oncoprotein

Background: High risk human papillomavirus (hr-HPV)-associated oropharyngeal cancers (OPCs) are characterized by significantly better therapy responses. In order to implement a de-escalated treatment strategy for this tumor entity, it is highly crucial to accurately distinguish HPV-associated OPCs from non-HPV-associated ones. Methods: In this prospective study, 56 patients with histologically confirmed OPC were evaluated. A commercially available sandwich ELISA test system was used for the detection of hr-HPV E7 oncoprotein targeting the genotypes 16, 18 and 45. Results were presented as optical density. Positivity for HPV DNA and p16 immunohistochemistry (IHC) was taken as the reference method. Results: E7 positivity was significantly associated with the reference method (p = 0.048). The sensitivity, specificity, positive predictive value and negative predictive value for the E7 oncoptotein was 60.9% (95% CI 38.5 to 80.3%), 66.7% (95% CI 46% to 83.5%), 64.2% (95% CI 49.4 to 77.4%) and 63.01% (95% CI 48.9–75.2%), respectively, for the cutoff provided by the manufacturer. Conclusions: We found a significant association between E7 oncoprotein detection and the currently used combination. We believe that the use of the ELISA based E7 antigen test could be a valuable addition in cases of ambiguous findings and may be used in combination with other techniques to distinguish between HPV-driven and non-HPV-driven OPCs. However, the low sensitivity of the assay coupled with the small sample size in our study may represent a limitation. We recommend that future larger studies elucidate the diagnostic value of the E7 brush test.

Probing the ultrastructure of the mitotic and meiotic spindle in eggs: An expeditious approach based on semi-thin (0.25 μm) serial sections

1983 ◽  
Vol 41 ◽  
pp. 552-555
Author(s):  
Conly L. Rieder ◽  
S. Bowser ◽  
R. Nowogrodzki ◽  
K. Ross ◽  
G. Sluder
Keyword(s):  
Small Sample Size ◽  
Small Sample ◽  
Meiotic Spindle ◽  
Serial Sections ◽  
Mitotic Apparatus ◽  
Thin Sections ◽  
Cell Cycles ◽  
Ultrastructural Studies

Eggs have long been a favorite material for studying the mechanism of karyokinesis in-vivo and in-vitro. They can be obtained in great numbers and, when fertilized, divide synchronously over many cell cycles. However, they are not considered to be a practical system for ultrastructural studies on the mitotic apparatus (MA) for several reasons, the most obvious of which is that sectioning them is a formidable task: over 1000 ultra-thin sections need to be cut from a single 80-100 μm diameter egg and of these sections only a small percentage will contain the area or structure of interest. Thus it is difficult and time consuming to obtain reliable ultrastructural data concerning the MA of eggs; and when it is obtained it is necessarily based on a small sample size.We have recently developed a procedure which will facilitate many studies concerned with the ultrastructure of the MA in eggs. It is based on the availability of biological HVEM's and on the observation that 0.25 μm thick serial sections can be screened at high resolution for content (after mounting on slot grids and staining with uranyl and lead) by phase contrast light microscopy (LM; Figs 1-2).

Validating the Factor Structure of the Stigma of Suicide Scale–Short Form Spanish Version Among Healthcare Students

Crisis ◽  
2020 ◽  
pp. 1-5
Author(s):  
Ruthmarie Hernández-Torres ◽  
Paola Carminelli-Corretjer ◽  
Nelmit Tollinchi-Natali ◽  
Ernesto Rosario-Hernández ◽  
Yovanska Duarté-Vélez ◽  
...  
Keyword(s):  
Factor Structure ◽  
Structural Equation ◽  
Short Form ◽  
Small Sample Size ◽  
Small Sample ◽  
Spanish Version ◽  
Equation Modeling ◽  
Cross Sectional ◽  
Healthcare Students ◽  
Spanish Speaking

Abstract. Background: Suicide is a leading cause of death among Spanish-speaking individuals. Suicide stigma can be a risk factor for suicide. A widely used measure is the Stigma of Suicide Scale-Short Form (SOSS-SF; Batterham, Calear, & Christensen, 2013 ). Although the SOSS-SF has established psychometric properties and factor structure in other languages and cultural contexts, no evidence is available from Spanish-speaking populations. Aim: This study aims to validate a Spanish translation of the SOSS-SF among a sample of Spanish-speaking healthcare students ( N = 277). Method: We implemented a cross-sectional design with quantitative techniques. Results: Following a structural equation modeling approach, a confirmatory factor analysis (CFA) supported the three-factor model proposed by Batterham and colleagues (2013) . Limitations: The study was limited by the small sample size and recruitment by availability. Conclusion: Findings suggest that the Spanish version of the SOSS-SF is a valid and reliable tool with which to examine suicide stigma among Spanish-speaking populations.

An Initial Investigation of Suicide Attempt Disclosures Among US Veterans

Crisis ◽  
2020 ◽  
pp. 1-7
Author(s):  
Brooke A. Ammerman ◽  
Sarah P. Carter ◽  
Heather M. Gebhardt ◽  
Jonathan Buchholz ◽  
Mark A. Reger
Keyword(s):  
Suicide Attempt ◽  
Mental Health Professionals ◽  
Help Seeking ◽  
Psychiatric Treatment ◽  
Small Sample Size ◽  
Romantic Partners ◽  
Small Sample ◽  
Professional Care ◽  
Patient Disclosure ◽  
Previous Suicide Attempt

Abstract. Background: Patient disclosure of prior suicidal behaviors is critical for effectively managing suicide risk; however, many attempts go undisclosed. Aims: The current study explored how responses following a suicide attempt disclosure may relate to help-seeking outcomes. Method: Participants included 37 veterans with a previous suicide attempt receiving inpatient psychiatric treatment. Veterans reported on their most and least helpful experiences disclosing their suicide attempt to others. Results: Veterans disclosed their suicide attempt to approximately eight individuals. Mental health professionals were the most cited recipient of their most helpful disclosure; romantic partners were the most common recipient of their least helpful disclosures. Positive reactions within the context of the least helpful disclosure experience were positively associated with a sense of connection with the disclosure recipient. Positive reactions within the most helpful disclosure experience were positively associated with the likelihood of future disclosure. No reactions were associated with having sought professional care or likelihood of seeking professional care. Limitations: The results are considered preliminary due to the small sample size. Conclusion: Findings suggest that while positive reactions may influence suicide attempt disclosure experiences broadly, additional research is needed to clarify factors that drive the decision to disclose a suicide attempt to a professional.

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