Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • VIRUS-LIKE PARTICLES  (19)
  • 1
    Keywords: CANCER ; tumor ; carcinoma ; human ; CLASSIFICATION ; EXPOSURE ; RISK ; SITE ; PROTEIN ; PROTEINS ; TUMORS ; PATIENT ; DNA ; INFECTION ; FAMILY ; RISK-FACTORS ; SKIN ; MR ; papillomavirus ; ASSOCIATION ; antibodies ; IN-SITU ; risk factors ; PATHOGENESIS ; human papillomavirus ; VIRUS-LIKE PARTICLES ; HUMAN-PAPILLOMAVIRUS ; CARCINOMAS ; case-control studies ; squamous cell carcinoma ; INDIVIDUALS ; sensitivity ; RENAL-TRANSPLANT RECIPIENTS ; basal cell carcinoma ; glutathione-S-transferase ; CELL CARCINOMA ; case-control study ; population-based case-control study ; ASSOCIATIONS ; case control studies ; INTERVAL ; TECHNOLOGY ; RISK-FACTOR ; CANCERS ; population-based ; IMMUNOCOMPETENT INDIVIDUALS ; E6 PROTEIN ; multiplex serology ; PLUCKED EYEBROW HAIRS
    Abstract: Background. Although infection with human papillomaviruses (HPVs) is a major risk factor for several epithelial cancers, an etiologic relationship between HPV and keratinocyte cancers, such as squamous cell carcinomas (SCCs) and basal cell carcinomas (BCCs), remains unclear. Methods: In a population-based case-control study of 252 SCC case patients, 525 BCC case patients, and 461 control subjects, we used multiplex serology to detect antibodies in plasma samples against 16 HPV types from phylogenetic genera alpha, beta, and mu. Multiplex serology is a new method that is based on fluorescent bead technology and allows simultaneous detection of antibodies against up to 100 different in situ affinity-purified recombinant HPV proteins. Data on sun sensitivity, outdoor exposure, and other risk factors for keratinocyte cancers were collected through personal interviews. Odds ratios (ORs) with 95% confidence intervals (CIs) were calculated via unconditional logistic regression models. Results: Overall, we detected HPV antibodies more frequently in SCC patients than in control subjects (OR = 1.6, 95% CI = 1.2 to 2.3), but we found no difference in HPV seropositivity between BCC case patients and control subjects (OR = 0.8, 95% CI = 0.6 to 1.1). Among HPV types, seropositivity to HPV types in genus beta (OR = 1.5,95% CI = 1.0 to 2.1), particularly HPV 5 (OR = 1.8,95% CI = 1.0 to 3.1), was associated with SCC risk. Individuals with tumors on chronically sun exposed sites were more likely to be seropositive for beta HPV types than individuals with SCC at other anatomic sites. The highest SCC risk was associated with positivity for multiple HPV types and, among individuals seropositive for HPV beta, a tendency to sunburn; however, the associations had limited statistical precision. Conclusions: Our findings support a role for HPV types from the genus beta in the pathogenesis of SCC
    Type of Publication: Journal article published
    PubMed ID: 16537831
    Signatur Availability
    BibTip Others were also interested in ...
  • 2
    Keywords: CANCER ; tumor ; BLOOD ; carcinoma ; CELL ; human ; DIAGNOSIS ; COHORT ; EPIDEMIOLOGY ; RISK ; TIME ; INFECTION ; ANTIGEN ; antibodies ; antibody ; virus ; NO ; DIFFERENCE ; PLASMA ; COMPONENT ; VIRUS-LIKE PARTICLES ; HPV ; case-control studies ; squamous cell carcinoma ; INDIVIDUALS ; L1 ; INFECTIONS ; PREVALENCE ; European Prospective Investigation into Cancer and Nutrition ; nutrition ; SKIN-CANCER ; glutathione-S-transferase ; CELL CARCINOMA ; ONCOLOGY ; case control study ; case-control study ; PATTERN ; EPIDERMODYSPLASIA-VERRUCIFORMIS ; prospective studies ; case control studies ; ACTINIC KERATOSES ; USA ; prospective ; prospective study ; UNIT ; SQUAMOUS-CELL ; serology ; HUMAN PAPILLOMAVIRUSES ; SEROPREVALENCE ; case control ; cutaneous squamous cell carcinoma (SCC) ; HPV types ; human papillomavirus (HPV) ; ORGAN-TRANSPLANTATION ; prospective case-control
    Abstract: In a prospective pilot study nested in the EPIC-Oxford cohort, we examined the seroprevalence of antibodies against the L1 antigen of 38 human papilloma virus (HPV) types among 39 cases of cutaneous squamous cell carcinoma (SCC) for whom plasma was collected prior to diagnosis (incident) and 80 controls. Fifteen cases having already developed SCC at blood collection (prevalent) were also tested. There were no statistically significant differences in the seroprevalence of antibodies against any of the HPV types examined between incident cases and controls, nor was there a difference in the seroprevalence of multiple infections. However, consistent with results from published case-control studies, the seroprevalence of many beta-HPV types was higher among prevalent cases than among either incident cases or controls. For example the seroprevalence of antibodies against HPV-8 was 20% (16/80) in controls, 23% (9/39) among incident cases and 40% (6115) among prevalent cases. Among the incident cases only, the seroprevalence was 16% (5/32) among those for whom blood was collected 18+ months prior to diagnosis, but 57% (4/7) among those for whom diagnosis was within 18 months of blood collection, a pattern seen for many of the HPV types. This might suggest that if HPV is involved in the aetiology of SCC, the process occurs close to the time of diagnosis, or that the antibody response observed in people with SCC is a consequence of tumor formation. Further and larger prospective studies are needed to clarify the role of HPV in the aetiology of cutaneous SCC. (C) 2007 Wiley-Liss, Inc
    Type of Publication: Journal article published
    PubMed ID: 17565742
    Signatur Availability
    BibTip Others were also interested in ...
  • 3
    Keywords: Germany ; human ; DISEASE ; DISEASES ; HISTORY ; POPULATION ; DISTINCT ; PROTEIN ; TIME ; INFECTION ; SKIN ; papillomavirus ; ALPHA ; antibodies ; antibody ; PATTERNS ; AGE ; WOMEN ; MEN ; CAPSID PROTEIN ; human papillomavirus ; VIRUS-LIKE PARTICLES ; HIGH-RISK ; HPV ; BETA ; HUMAN-PAPILLOMAVIRUS ; Jun ; SQUAMOUS-CELL CARCINOMA ; POLYMERASE-CHAIN-REACTION ; L1 ; CHILDREN ; NATURAL-HISTORY ; PREVALENCE ; NONMELANOMA SKIN CANCERS ; glutathione-S-transferase ; SERUM ; ADULT ; ADULTS ; SAN-FRANCISCO ; review ; RE ; PATTERN ; papillomaviruses ; GAMMA ; EPIDERMODYSPLASIA-VERRUCIFORMIS ; HPV 16 ; USA ; YOUNG-ADULTS ; INFECTIOUS-DISEASES ; microbiology ; serology ; multiplex serology ; SEROPREVALENCE ; GENERAL-POPULATION ; HPV types ; MAJOR CAPSID PROTEIN ; HPV-16 ; CUTANEOUS HUMAN PAPILLOMAVIRUSES ; FOOD-CONSUMPTION HABITS ; NORMAL CERVICAL SMEARS
    Abstract: The natural history of infections with many human papillomavirus (HPV) types is poorly understood. Here, we describe for the first time the age-and sex-dependent antibody prevalence for 29 cutaneous and five mucosal HPV types from 15 species within five phylogenetic genera (alpha, beta, gamma, mu, nu) in a general population. Sera from 1,797 German adults and children (758 males and 1,039 females) between 1 and 82 years (median 37 years) were analysed for antibodies to the major capsid protein L1 by Luminex-based multiplex serology. The first substantial HPV antibody reactions observed already in children and young adults are those to cutaneous types of the genera nu (HPV 41) and mu (HPV 1, 63). The antibody prevalence to mucosal high-risk types, most prominently HPV 16, was elevated after puberty in women but not in men and peaked between 25 and 34 years. Antibodies to beta and gamma papillomaviruses (PV) were rare in children and increased homogeneously with age, with prevalence peaks at 40 and 60 years in women and 50 and 70 years in men. Antibodies to cutaneous alpha PV showed a heterogeneous age distribution. In summary, these data suggest three major seroprevalence patterns for HPV of phylogenetically distinct genera: antibodies to mu and nu skin PV appear early in life, those to mucosal alpha PV in women after puberty, and antibodies to beta as well as to gamma skin PV accumulate later in life
    Type of Publication: Journal article published
    PubMed ID: 18566657
    Signatur Availability
    BibTip Others were also interested in ...
  • 4
    Keywords: INFECTION ; smoking ; VIRUS-LIKE PARTICLES ; HPV TYPE-16 ; glutathione-S-transferase ; YOUNG-WOMEN ; POPULATION-BASED COHORT ; COSTA-RICA ; FEMALE UNIVERSITY-STUDENTS ; IMMUNOGLOBULIN LEVELS
    Abstract: Only a subset of women with human papillomavirus (HPV) infections will become seropositive, and the factors influencing seroconversion are not well understood. We used a multiplex serology assay in women with mildly abnormal cytology results to examine seroreactivity to oncogenic HPV genotypes. An unbiased subset of women in the atypical squamous cell of undetermined significance /low-grade squamous intraepithelial lesion Triage Study provided blood samples at trial enrollment for serological testing. A Luminex assay based on glutathione s-transferase-L1 fusion proteins as antigens was used to test seroreactivity against eight carcinogenic HPV genotypes (16, 18, 31, 33, 35, 45, 52 and 58). We analyzed the relationship between seroprevalence in women free of precancer (N = 2,464) and HPV DNA status, age, sexual behavior and other HPV-related risk factors. The overall seroprevalence was 24.5% for HPV16 L1 and approximately 20% for 18L1 and 31L1. Among women free of precancer, seroprevalence peaked in women less than 29 years and decreased with age. Type-specific seroprevalence was associated with baseline DNA detection for HPV16 (OR = 1.36, 95%CI: 1.04-1.79) and HPV18 (OR = 2.31, 95%CI: 1.61-3.32), as well as for HPV52 and HPV58. Correlates of sexual exposure were associated with increased seroprevalence across most genotypes. Women who were current or former smokers were less likely to be seropositive for all eight of the tested oncogenic genotypes. The multiplex assay showed associations between seroprevalence and known risk factors for HPV infection across nearly all tested HPV genotypes but associations between DNA- and serostatus were weak, suggesting possible misclassification of the participants' HPV serostatus.
    Type of Publication: Journal article published
    PubMed ID: 23588935
    Signatur Availability
    BibTip Others were also interested in ...
  • 5
    Keywords: VIRUS-LIKE PARTICLES ; NATURAL-HISTORY ; glutathione-S-transferase ; YOUNG-WOMEN ; HPV INFECTION ; UNDETERMINED SIGNIFICANCE ; QUADRIVALENT VACCINE ; SQUAMOUS INTRAEPITHELIAL LESION ; ASCUS-LSIL TRIAGE ; DNA DETECTION
    Abstract: BACKGROUND: Natural human papillomavirus (HPV) antibody titers have shown protection against subsequent HPV infection, but previous studies were restricted to few HPV genotypes. We examined the association of naturally occurring antibodies against 8 carcinogenic HPV types with subsequent infections. METHODS: A total of 2302 women enrolled in the Atypical Squamous Cells of Undetermined Significance/Low-Grade Squamous Intraepithelial Lesion Triage Study provided blood samples at baseline. Serum samples were tested for antibodies against 8 carcinogenic HPV genotypes (16, 18, 31, 33, 35, 45, 52, and 58) using a multiplex serology assay. We analyzed the relationship between HPV antibodies and HPV infection during 2 years of follow-up among women negative for the specific HPV type at baseline. RESULTS: Baseline seroprevalence for HPV16 L1 was associated with decreased risk of DNA positivity for HPV16 (odds ratio, 0.39 [95% confidence interval, .18-.86]) at 〉/=2 follow-up visits. We observed similar but nonsignificant decreased risks for HPV18 and 31. These findings were restricted to women reporting a new sex partner during follow-up. There was no association between baseline seroprevalence and detection of precancer during follow-up. CONCLUSIONS: Seroprevalence conferred protection against subsequent HPV infection for HPV16 and indicated possible protection for 2 other genotypes, suggesting that this effect is common to several HPV genotypes.
    Type of Publication: Journal article published
    PubMed ID: 24569064
    Signatur Availability
    BibTip Others were also interested in ...
  • 6
    Keywords: antibodies ; WOMEN ; cervical cancer ; human papillomavirus ; TYPE-16 ; VIRUS-LIKE PARTICLES ; E6 ; glutathione-S-transferase ; NECK-CANCER ; MALIGNANCY ; case-control study ; CARCINOMA PATIENTS ; SERUM ANTIBODIES ; E7 PROTEINS ; SEROLOGIC RESPONSE
    Abstract: Different human papillomavirus (HPV) genes are expressed during the various phases of the HPV life cycle and may elicit immune responses in the process towards malignancy. To evaluate their association with cervical cancer, antibodies against proteins from HPV16 (L1, E1, E2, E4, E6 and E7) and HPV18/31/33/35/45/52/58 (L1, E6 and E7) were measured in serum of 307 invasive cervical cancer cases and 327 controls from Algeria and India. Antibody response was evaluated using a glutathione S-transferase-based multiplex serology assay and HPV DNA detected from exfoliated cervical cells using a GP5+/6+-mediated PCR assay. Among HPV16 DNA-positive cases, seroprevalence of HPV16 antibodies ranged from 16% for HPV16 E1 to 50% for HPV16 E6 and all were significantly higher than controls. Seroprevalence of E6, E7 and L1 antibodies for HPV18 and for at least one of HPV31/33/35/45/52/58 were also higher in cases positive for DNA of the corresponding type (50% and 30% for E6 of HPV18 and HPV31/33/35/45/52/58 combined, respectively). E6 and E7 antibodies were rarely found in controls, but cross-reactivity was evident among cancer cases positive for DNA of closely phylogenetically-related HPV types. E6 or E7 antibodies against any of the eight HPV types were detected in 66.1% of all cervical cancer cases, as compared to 10.1% of controls. E6, and to a lesser extent E7, antibodies appear to be specific markers of HPV-related malignancy. However, even among cases positive for the same type of HPV DNA, approximately one-third of cervical cancer cases show no detectable immune response to either E6 or E7.
    Type of Publication: Journal article published
    PubMed ID: 24729277
    Signatur Availability
    BibTip Others were also interested in ...
  • 7
    Keywords: RISK-FACTORS ; CERVICAL-CANCER ; VIRUS-LIKE PARTICLES ; NATURAL-HISTORY ; CAPSID ANTIBODIES ; UNIVERSITY-STUDENTS ; HOMOSEXUAL-MEN ; MALE ANOGENITAL SITES ; ANNUAL DISEASE BURDEN ; 18 SEROPREVALENCE
    Abstract: The prospective Finnish Family HPV Study evaluated the dynamics of human papillomavirus (HPV) infection within families. Here, we focused on HPV serology in men. Seroprevalence at baseline, seroconversion and decay of low-risk (LR)-HPV6 and 11, and high risk (HR)-HPV16, 18 and 45 L1 antibodies in 122 men at 12, 24 and 36 months were determined using Luminex-based multiplex HPV serology, and correlated with demographic data. At baseline, seropositivity to HPV6, 11, 16, 18 and 45 was observed in 41.0, 11.5, 23.0, 13.9 and 5.7 % of the men, respectively. In univariate analysis, LR-HPV seropositivity was related to smoking status, history of genital warts and being seropositive to HR-HPV. Oral HR-HPV DNA and baseline LR-HPV seropositivity predicted HR-HPV seropositivity. Seroconversion to HPV6, 11, 16, 18 and 45 antigens during follow-up was found in 24.6, 11.5, 5.7, 5.7 and 0.8 %, respectively. Seroconversion to LR-HPV was negatively related to a higher number of children and oral sex, and positively associated with seroconversion to HR-HPV. In multivariate analysis, the same predictors remained significant except for the number of children. In univariate generalised estimating equations (GEE) for HR-HPV, being seroconverted to LR-HPV was the only predictor, but lost its significance in multivariate analyses. Decay of all HPV L1 antibodies was rare and observed in 0-2 %. The HPV antibody profile in men was dominated by response to HPV6, also showing the highest cumulative seroconversion. Oral HPV infection might affect HPV serology: (1) HPV DNA in oral mucosa is associated with baseline HR-HPV seropositivity and (2) practising oral sex significantly reduces longitudinal seroconversion to HPV6 and/or 11.
    Type of Publication: Journal article published
    PubMed ID: 25116322
    Signatur Availability
    BibTip Others were also interested in ...
  • 8
    Keywords: CANCER ; carcinoma ; CELL ; human ; COMMON ; COHORT ; EPIDEMIOLOGY ; HISTORY ; POPULATION ; RISK ; PROTEINS ; TIME ; DNA ; INFECTION ; RISK-FACTORS ; ANTIGEN ; SKIN ; papillomavirus ; ASSOCIATION ; SUSCEPTIBILITY ; antibodies ; antibody ; AGE ; WOMEN ; MEN ; RISK FACTOR ; human papillomavirus ; VIRUS-LIKE PARTICLES ; HPV ; HUMAN-PAPILLOMAVIRUS ; POPULATIONS ; case-control studies ; squamous cell carcinoma ; L1 ; PREVALENCE ; glutathione-S-transferase ; SERUM ; CELL CARCINOMA ; case control study ; case-control study ; RECIPIENTS ; HPV 16 ; TECHNOLOGY ; ACTINIC KERATOSES ; NONMELANOMA SKIN-CANCER ; HISTOLOGY ; USA ; UNIT ; RISK-FACTOR ; SQUAMOUS-CELL ; IMMUNOCOMPETENT INDIVIDUALS ; serology ; SEROPREVALENCE ; cutaneous squamous cell carcinoma (SCC) ; HPV types ; human papillomavirus (HPV) ; Genital warts ; CONFIDENCE ; organ transplant recipients ; SCC
    Abstract: A case-control study was conducted in 140 people with histology proven cutaneous squamous cell carcinoma (SCC) and 454 controls, nested within 2 cohorts of organ transplant recipients (OTR) recruited in London and Oxford between 2002 and 2006. All participants had a skin examination, completed a questionnaire and had serum tested for antibodies against the L1 antigen of 34 HPV types using Luminex technology. SCC was more common in men than women (odds ratio [OR] = 1.7, 95% confidence interval [CI]: 1.1-2.8, p = 0.02) and in people with susceptibility to burn easily (OR = 3.0, 95%CI: 1.9-4.8; p 〈 0.001). The risk increased with increasing age (p-trend 〈 0.001), increasing time since transplant (p-trend 〈 0.001), increasing self-reported number of sunburns as a child (p(trend) 〈 0.001) and with the presence of viral warts (p 〈 0.001). As expected, antibodies against HPV 16 were associated with a self-reported history of an abnormal cervical smear among women (OR 5.1, 95%CI: 2.6-10.2) and antibodies against HPV 6 were associated with a self-reported history of genital warts (OR 4.0, 95%CI: 2.2-7.2). However, no clear associations between any of the HPV types examined (including cutaneous betaHPVs) and SCC were identified. For example, the seroprevalence of HPV 5 was 15% among cases and 9% among controls (p = 0.09) and the seroprevalence of HPV 8 was 23% among cases and 21% among controls (p = 0.6). Nor was seropositivity to multiple types associated with SCC. These serological data do not provide evidence for a role for HPV in the aetiology of cutaneous SCC among OTR in two UK-based populations. (C) 2009 UICC
    Type of Publication: Journal article published
    PubMed ID: 19588489
    Signatur Availability
    BibTip Others were also interested in ...
  • 9
    Keywords: CANCER ; carcinoma ; CELL ; HISTORY ; POPULATION ; DNA ; INFECTION ; MARKER ; INDUCTION ; SKIN ; ASSOCIATION ; antibodies ; antibody ; AGE ; skin cancer ; MARKERS ; VIRUS-LIKE PARTICLES ; BETA ; NETHERLANDS ; L1 ; NATURAL-HISTORY ; PREVALENCE ; NONMELANOMA SKIN CANCERS ; SKIN-CANCER ; YOUNG-WOMEN ; SERUM ; CELL CARCINOMA ; ADULT ; ADULTS ; ASSOCIATIONS ; EPIDERMODYSPLASIA-VERRUCIFORMIS ; TRANSPLANT RECIPIENTS ; ACTINIC KERATOSES ; PERSISTENCE ; SQUAMOUS-CELL ; IMMUNOCOMPETENT INDIVIDUALS ; HUMAN-PAPILLOMAVIRUS INFECTION ; CUTANEOUS HUMAN PAPILLOMAVIRUSES ; Type ; Cutaneous ; SQUAMOUS-CELL-CARCINOMA
    Abstract: Betapapillomavirus (mu PV) DNA and seroresponses are highly prevalent in the general population and both are frequently used as infection markers in epidemiological studies to elucidate an association with cutaneous squamous cell carcinoma (SCC). Little is known about the natural history of beta PV infection and the aspects of infection that drive antibody responses. To investigate the relationship between these markers, this study assessed whether the presence or persistence of beta PV DNA in eyebrow hairs and L1 antibodies of the same beta PV type co-occurred more frequently than would be expected by chance in both a cross-sectional assessment and a longitudinal study. beta PV DNA in plucked eyebrow hairs and L1 antibodies in serum were measured in 416 participants of the Australian community-based Nambour Skin Cancer Study in 1996. Similar data were available for a subset of 148 participants in 2003. Observed co-occurrence of beta PV DNA and antibodies was compared with expected values based on prevalence. A case-wise concordance index was used to calculate the overall concordance of beta PV DNA and antibodies of the same type. No significant associations were found between the presence or persistence of beta PV DNA and antibody responses. The age and sex of the host did not influence the association, and nor did SCC status or a history of sunburns. It was concluded that beta PV antibody responses in adults are not primarily driven by beta PV infection as measured in eyebrow hairs. Other factors, such as viral load, may play a more pivotal role in the induction of detectable seroresponses
    Type of Publication: Journal article published
    PubMed ID: 20444998
    Signatur Availability
    BibTip Others were also interested in ...
  • 10
    Keywords: INFECTION ; antibodies ; CERVICAL-CANCER ; VIRUS-LIKE PARTICLES ; UNITED-STATES ; NATURAL-HISTORY ; PREVALENCE ; glutathione-S-transferase ; UNIVERSITY-STUDENTS ; SOUTH-KOREA
    Abstract: Background: To determine differences in the seroprevalence of high-risk human papillomavirus (hrHPV) types between men having sex with men (MSM), heterosexual men and women, we analyzed seroprevalence and risk factors for 8 hrHPV in the general population of Amsterdam, the Netherlands. Methods: We interviewed 1349 inhabitants aged 〉= 17 years and tested sera for antibodies against L1 capsid proteins of 8 hrHPV using Luminex-based multiplex serology. Risk factors for hrHPV were determined by multivariate Poisson analysis. Results: Seroprevalences for 8 hrHPV ranged from 13.1% for HPV-45 to 31.4% for HPV-35. Seropositivity for HPV-16 and HPV-18 was more common in women and MSM than in heterosexual men. HPV-16 and -18 were more common in subjects also having antibodies against other hrHPV types (prevalence rate ratio [PRR], 2.12, 95% confidence interval [CI] 1.52-2.97; and PRR, 2.00; 95% CI, 1.43-2.81, respectively) and/or herpes simplex virus type 2 (PRR, 1.69; 95% CI, 1.32-2.16; and PRR, 1.47; 95% CI, 1.13-1.92, respectively). HPV-18 was more common in persons with a history of sexually transmitted infections (STI) (PRR, 1.64; 95% CI, 1.20-2.25). HPV-35, -45, and -58 were more common in non-European ethnic groups. Conclusions: Prevalence of 8 hrHPV antibodies was high in the Amsterdam population, especially in MSM
    Type of Publication: Journal article published
    PubMed ID: 20729796
    Signatur Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...