LUISA LINA VILLA

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Departamento de Radiologia, Faculdade de Medicina - Docente
LIM/24 - Laboratório de Oncologia Experimental, Hospital das Clínicas, Faculdade de Medicina - Líder

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Colaboração internacional: Estados Unidos × Assunto: Infectious Diseases ×

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Agora exibindo 1 - 10 de 26
  • conferenceObject
    THE AGE-SPECIFIC DISTRIBUTION OF GENITAL HUMAN PAPILLOMAVIRUS (HPV) INFECTION AND HERPES SIMPLEX VIRUS-2 (HSV-2) ANTIBODIES AMONG MEN WITH GENDER-FIXED AND GENDER-FLUID SEXUAL BEHAVIOUR: THE HIM STUDY
    (2013) NYITRAY, A. G.; ROSS, M. W.; WILKERSON, M.; VILLA, L. L.; ABRAHAMSEN, M.; PAPENFUSS, M.; LAZCANO-PONCE, E.; GIULIANO, A. R.
  • article 7 Citação(ões) na Scopus
    Human Papillomavirus Prevalence Among 88 Male Virgins Residing in Brazil, Mexico, and the United States
    (2016) LIU, Zhiyue; NYITRAY, Alan G.; HWANG, Lu-Yu; SWARTZ, Michael D.; ABRAHAMSEN, Martha; LAZCANO-PONCE, Eduardo; SALMERN, Jorge; QUITERIO, Manuel; VILLA, Luisa L.; BAGGIO, Maria Luiza; SILVA, Roberto J. C.; GIULIANO, Anna R.
    This study determined the prevalence and risk factors for genital human papillomavirus (HPV) detection among men who deny ever engaging in penetrative sex. A questionnaire was administered to 4123 men from a cohort study of HPV natural history. Genital exfoliated cells were collected and genotyped for 36 HPV types. Eighty-eight men were classified as virgins. Log-binomial regression models identified factors associated with genital HPV detection. The prevalence of any and high-risk HPV types among 88 male virgins was 25.0% and 18.2%, respectively. Age and smoking status were associated with HPV detection. Further studies are needed to better understand the risk for HPV infection among male virgins.
  • article 16 Citação(ões) na Scopus
    The Natural History of Genital Human Papillomavirus Among HIV-Negative Men Having Sex With Men and Men Having Sex With Women
    (2015) NYITRAY, Alan G.; CHANG, Mihyun; VILLA, Luisa L.; SILVA, Roberto J. Carvalho da; BAGGIO, Maria Luiza; ABRAHAMSEN, Martha; PAPENFUSS, Mary; QUITERIO, Manuel; SALMERON, Jorge; LAZCANO-PONCE, Eduardo; GIULIANO, Anna R.
    Background. Although human immunodeficiency virus (HIV)-negative men having sex with men (MSM) bear a substantial burden of human papillomavirus (HPV)-associated disease, prospective studies of genital HPV infection in this population are scarce. Methods. HPV genotyping was conducted on genital samples from men (aged 18-70 years) from Brazil, Mexico, or the United States who provided specimens at 6-month intervals for up to 4 years. Eligibility criteria included no history of genital warts or HIV infection. Evaluable specimens were collected from 564 MSM and 3029 men having sex with women (MSW). Incidence and clearance estimates with 95% confidence intervals were calculated. Results. The 12-month cumulative incidence of genital HPV was high in both MSM (25%; 95% confidence interval, 21%-30%) and MSW (21%; 20%-23%). After stratifying by city, MSM and MSW incidence rates were comparable, with 3 exceptions where MSM had higher incidence in >= 1 city: the group of quadrivalent vaccine types, HPV-45, and HPV-11. Median times to HPV-16 clearance were also comparable, with point estimates of >6 months for both MSM and MSW. Conclusions. Unlike with many other sexually transmitted infections, genital HPV natural history may be similar in HIV-negative MSM and MSW. Study periods of <= 6 months, however, may not be long enough to accurately measure the persistence of these infections in men.
  • article 52 Citação(ões) na Scopus
    Human Papillomavirus Virus (HPV) Genotype-and Age-Specific Analyses of External Genital Lesions Among Men in the HPV Infection in Men (HIM) Study
    (2015) INGLES, Donna J.; CAMPBELL, Christine M. Pierce; MESSINA, Jane A.; STOLER, Mark H.; LIN, Hui-Yi; FULP, William J.; ABRAHAMSEN, Martha; SIRAK, Bradley A.; O'KEEFE, Michael T.; PAPENFUSS, Mary; GAGE, Christine; SILVA, Roberto Carvalho da; SOSA, Rossana Gonzalez; JUAREZ, Oscar Rojas; VILLA, Luisa L.; PONCE, Eduardo Lazcano; GIULIANO, Anna R.
    Background. Human papillomavirus (HPV) causes external genital lesions (EGLs) in men, including condyloma and penile intraepithelial neoplasia (PeIN). We sought to determine the incidence of pathologically confirmed EGLs, by lesion type, among men in different age groups and to evaluate the HPV types that were associated with EGL development. Methods. HPV Infection in Men (HIM) study participants who contributed >= 2 visits from 2009-2013 were included in the biopsy cohort. Genotyping by an HPV line-probe assay was performed on all pathologically confirmed EGLs. Age-specific analyses were conducted for incident EGLs, with Kaplan-Meier estimation of cumulative incidence. Results. This biopsy cohort included 2754 men (median follow-up duration, 12.4 months [interquartile range, 6.9-19.2 months]). EGLs (n = 377) were pathologically confirmed in 228 men, 198 of whom had incident EGLs. The cumulative incidence of any EGL was highest among men <45 years old and, for condyloma, decreased significantly over time with age. The genotype-specific incidence of EGL varied by pathological diagnoses, with high-and low-risk genotypes found in 15.6% and 73.2% of EGLs, respectively. Condyloma primarily contained HPV 6 or 11. While PeIN lesions primarily contained HPV 16, 1 PeIN III lesion was positive for HPV 6 only. Conclusion. Low-and high-risk HPV genotypes contribute to the EGL burden. Men remain susceptible to HPV-related EGLs throughout the life span, making it necessary to ensure the longevity of immune protection against the most common causative HPV genotypes.
  • article 14 Citação(ões) na Scopus
    Acquisition, Persistence, and Clearance of Human Papillomavirus Infection Among Male Virgins Residing in Brazil, Mexico, and the United States
    (2018) LIU, Zhiyue; NYITRAY, Alan G.; HWANG, Lu-Yu; SWARTZ, Michael D.; ABRAHAMSEN, Martha; LAZCANO-PONCE, Eduardo; VILLA, Luisa L.; GIULIANO, Anna R.
    Background. Little is known about the natural history of human papillomavirus (HPV) infection in male virgins. This study estimated the incidence and clearance of genital HPV infection and the factors associated with these measures among men who denied at baseline ever having penetrative sex. Methods. A cohort of 4123 men residing in Brazil, Mexico, and the United States were followed every 6 months for up to 10 visits. Genital exfoliated cells were collected and genotyped for 36 HPV types. Eighty-seven men were classified as virgins and included for analysis. Cox proportional hazards models identified factors associated with the incidence and clearance of genital HPV infection. Results. The incidence rates for any HPV infection among virgins who did and those who did not initiate sex during follow-up were 26.2 and 14.6 cases/1000 person-months, respectively. After penetrative sex initiation, 45.5% of men acquired HPV within 24 months. Younger age, current smoking, no recent female sex partners, and prevalent HPV infection were associated with high-risk HPV clearance. Conclusion. Virgins who did not initiate sex during follow-up still acquired HPV infection, possibly through nonpenetrative sexual contact. Further prospective cohort studies are needed to better understand factors associated with HPV acquisition and clearance in male virgins and recent nonvirgins.
  • article 7 Citação(ões) na Scopus
    Vaginal Microbiome Components as Correlates of Cervical Human Papillomavirus Infection
    (2022) MORALES, Julia Andrade Pessoa; MARCONI, Camila; EL-ZEIN, Mariam; RAVEL, Jacques; PINTO, Gabriel Victor da Silva; SILVEIRA, Rosana; LIMA, Moises Diogo de; CARVALHO, Newton Sergio de; ALVES, Rosane Ribeiro Figueiredo; PARADA, Cristina Maria Garcia de Lima; LEITE, Sandra Helena Morais; VILLA, Luisa L.; FRANCO, Eduardo L.; SILVA, Marcia Guimaraes da
    Background Interplay between vaginal microbiome and human papillomavirus (HPV) remains unclear, partly due to heterogeneity of microbiota. Methods We used data from 546 women enrolled in a cross-sectional study in 5 Brazil. We genotyped vaginal samples for HPV and sequenced V3-V4 region of 16S rRNA gene for vaginal microbiome analysis. We used stepwise logistic regression to construct 2 linear scores to predict high-risk HPV (hrHPV) positivity: one based exclusively on presence of individual bacterial taxa (microbiome-based [MB] score) and the other exclusively on participants' sociodemographic, behavioral, and clinical (SBC) characteristics. MB score combined coefficients of 30 (of 116) species. SBC score retained 6 of 25 candidate variables. We constructed receiver operating characteristic curves for scores as hrHPV correlates and compared areas under the curve (AUC) and 95% confidence intervals (CI). Results Overall, prevalence of hrHPV was 15.8%, and 26.2% had a Lactobacillus-depleted microbiome. AUCs were 0.8022 (95% CI, .7517-.8527) for MB score and 0.7027 (95% CI, .6419-.7636) for SBC score (P = .0163). Conclusions The proposed MB score is strongly correlated with hrHPV positivity-exceeding the predictive value of behavioral variables-suggesting its potential as an indicator of infection and possible value for clinical risk stratification. This cross-sectional study demonstrated a strong correlation between vaginal microbiome components and cervical high-risk HPV positivity.
  • article 13 Citação(ões) na Scopus
    Factors Associated With Persistence and Clearance of High-Risk Oral Human Papillomavirus (HPV) Among Participants in the HPV Infection in Men (HIM) Study
    (2021) BETTAMPADI, Deepti; SIRAK, Bradley A.; ABRAHAMSEN, Martha E.; REICH, Richard R.; VILLA, Luisa L.; PONCE, Eduardo Lazcano; GIULIANO, Anna R.
    Background. Human papillomavirus (HPV)-attributable oropharyngeal cancer (HPV-OPC) incidence is increasing in many high-income countries among men. Factors associated with oral HPV persistence, the precursor of HPV-OPC, are unknown. Data from the HPV Infection in Men (HIM) Study, which followed participants >7 years, were utilized to examine rates of persistence and associated factors. Methods. Oral gargle samples from 3095 HIM study participants were HPV genotyped using the SPF 10 PCR-DEIA-LiPA 25 assay (DDL Diagnostic Laboratory). Oral HPV persistence for individual and grouped high-risk HPV types among 184 men positive for any high-risk HPV at their oral baseline visit was assessed at 6-month intervals. Factors associated with grouped high-risk HPV/HPV16 persistence were examined using logistic regression. Kaplan-Meier curves were constructed to examine median time to HPV clearance overall, and by selected risk factors. Results. Among the 7 HPV vaccine types, HPV33 had the longest median duration (7.6 months) followed by HPV16 and HPV45 (6.4 months). 10-30% of oral high-risk HPV infections persisted >= 24 months. Six months' persistence of oral high-risk HPV infections was positively associated with age and gingivitis and negatively with lifetime number of sexual partners, while 12 months' persistence was only inversely associated with lifetime number of sexual partners. Oral HPV16 persistence was positively associated with baseline HPV16 L1 antibody status. Conclusions. Eighteen percent of HPV16 infections persisted beyond 24 months, potentially conferring higher risk of HPV-OPC among these men. Older age appears to be an important factor associated with oral high-risk HPV persistence. More studies among healthy men are required to understand the progression of oral HPV infection to HPV-OPC.
  • article 9 Citação(ões) na Scopus
    Cervical Infection With Vaccine-Associated Human Papillomavirus (HPV) Genotypes as a Predictor of Acquisition and Clearance of Other HPV Infections
    (2016) TOTA, Joseph E.; RAMANAKUMAR, Agnihotram V.; VILLA, Luisa L.; RICHARDSON, Harriet; BURCHELL, Ann N.; COUTLEE, Francois; FRANCO, Eduardo L.
    Background. Recent birth cohorts vaccinated against human papillomavirus (HPV) may be protected against up to 4 genotypes (HPV-6, -11, -16, and -18). If natural competition exists between these and other HPV types, then the prevalence of other types may increase after vaccination. Methods.aEuro integral Cohort information from 3 studies was used to compare acquisition and clearance of 30 different HPV types (individually and grouped by species), according to infection status with vaccine-targeted types at baseline and the time of the index infection, respectively. Hazard ratios (HRs) were adjusted for predictors of multiple-type infection. Results.aEuro integral Among 3200 females across all studies, 857 were infected with HPV at baseline, and 994 acquired new infections during follow-up. Females infected with HPV-16 were at higher risk of acquiring other alpha-9 HPV types (HR, 1.9; 95% confidence interval [CI], 1.2-3.0) but at similar risk of clearing existing alpha-9 HPV infections (HR, 0.9; 95% CI, .7-1.3). Females infected with vaccine-targeted types were generally at higher risk of acquiring additional types (HRs, > 1.0) and at equal risk of clearing existing infections. Accounting for multiple comparisons, none of the HRs of < 1.0 or > 1.0 were statistically significant in our analyses of acquisition or clearance. Conclusions.aEuro integral Vaccine-targeted HPV types do not appear to compete with other types, suggesting that HPV type replacement is unlikely to occur.
  • article 21 Citação(ões) na Scopus
    High genital prevalence of cutaneous human papillomavirus DNA on male genital skin: the HPV Infection in Men Study
    (2014) SICHERO, Laura; CAMPBELL, Christine M. Pierce; FULP, William; FERREIRA, Silvaneide; SOBRINHO, Joao S.; BAGGIO, Maria Luiza; GALAN, Lenice; SILVA, Roberto C.; LAZCANO-PONCE, Eduardo; GIULIANO, Anna R.; VILLA, Luisa L.
    Background: The genital skin of males hosts a diversity of HPV genotypes and uncharacterized HPV genotypes. Previously we demonstrated that a specific viral genotype was not identified in 14% of all genital specimens (i.e., HPV unclassified specimens) using the Roche Linear Array method. Our goal was to identify and assess the prevalence of individual HPV types among genital HPV unclassified specimens collected in the HIM Study population, at enrollment, and examine associations with socio-demographic and behavioral characteristics. Methods: Genital skin specimens of men that were considered unclassified (HPV PCR positive, no genotype specified) at enrollment were typed by sequencing amplified PGMY09/11 products or cloning of PGMY/GP+ nested amplicons followed by sequencing. PGMY/GP+ negative specimens were further analyzed using FAP primers. HPV type classification was conducted through comparisons with sequences in the GenBank database. Results: Readable nucleotide sequences were generated for the majority of previously unclassified specimens (66%), including both characterized (77%) and yet uncharacterized (23%) HPV types. Of the characterized HPV types, most (73%) were Beta [beta]-HPVs, primarily from beta-1 and beta-2 species, followed by Alpha [alpha]-HPVs (20%). Smokers (current and former) were significantly more likely to have an alpha-HPV infection, compared with any other genus; no other factors were associated with specific HPV genera or specific beta-HPV species. Conclusions: Male genital skin harbor a large number of beta-HPV types. Knowledge concerning the prevalence of the diverse HPV types in the men genital is important to better understand the transmission of these viruses.
  • article 17 Citação(ões) na Scopus
    Diversity of human papillomavirus in the anal canal of men: the HIM Study
    (2015) SICHERO, L.; NYITRAY, A. G.; NUNES, E. M.; NEPAL, B.; FERREIRA, S.; SOBRINHO, J. S.; BAGGIO, M. L.; GALAN, L.; SILVA, R. C.; LAZCANO-PONCE, E.; GIULIANO, A. R.; VILLA, L. L.
    Human papillomavirus (HPV) infections are associated with the development of anogenital lesions in men. There are no reports describing the distribution of non-alpha HPV types in the anal canal of a sexually diverse group of men. The HPV Infection in Men (HIM) Study is a multicentre study on the natural history of HPV infection in Brazil, Mexico, and the USA. At baseline, 12% of anal canal PCR HPV-positive specimens were not typed by the Roche Linear Array, and were considered to be unclassified. Our goals were to characterize HPVs among these unclassified specimens at baseline, and to assess associations with participant socio-demographic and behavioural characteristics. Unclassified HPVs were typed by sequencing of amplified PGMY09/11 products or cloning of PGMY/GP + nested amplicons followed by sequencing. Further analysis was conducted with FAP primers. Of men with unclassified HPV in the anal canal, most (89.1%) were men who have sex with women. Readable sequences were produced for 62.8% of unclassified specimens, of which 75.2% were characterized HPV types. Eighteen, 26 and three different alpha-HPV, beta-HPV and gamma-HPV types were detected, respectively. alpha-HPVs were more commonly detected among young men (18-30 years) than among older men (45-70 years), whereas beta-HPVs were more frequent among mid-adult men (31-44 years). beta-HPVs were more common among heterosexual men (85.0%) than among non-heterosexual Men. All beta-HPVs detected among non-heterosexual men were beta 2-HPV types. The high prevalence of beta-HPV in the anal canal of men who do not report receptive anal sex is suggestive of other forms of transmission that do not involve penile anal intercourse. Clinical Microbiology and Infection (C) 2015 European Society of Clinical Microbiology and Infectious Diseases.