Prevalence and Genotype Distribution of HPV in Cytology Specimens Containing Atypical Glandular Cells: A Case Control Study

Introduction: Although the incidence of squamous cell cervical cancers in the U.S. has markedly declined over time with the introduction of the Papanicolaou (Pap) test, the incidence of glandular cell cancers has increased. The sensitivity of detecting lesions containing abnormal glandular cells is much lower than that for lesions containing abnormal squamous cells. While AGC-grade cytology results represent \u3c1% of all Pap test results reported annually in the U.S., up to 40% of them represent a corresponding high-grade lesion on the followup biopsy. Guidelines for managing AGC-grade cytology released in 2006 by the American Society for Colposcopy and Cervical Pathology include HPV testing. The purpose of this study was to determine the prevalence and genotype distribution of HPV in AGC-grade liquid-based cytology (LBC) specimens compared to control specimens negative for intraepithelial lesion or malignancy (NILM). Methods: Quest Diagnostics provided de-identified case and control LBC specimens. Cases were women with AGC-grade LBC specimens collected between 2007- 2012. Controls were a sample of women with NILM-grade LBC specimens collected between 2011-2012. DNA was extracted from LBC specimens using the QIAamp MinElute Media Kit (Qiagen Inc.) and amplified by PCR using the Linear Array HPV Genotyping Kit (Roche Molecular Inc.). To compare HPV prevalence and genotype distribution between AGC-grade cases and NILM controls, we used multivariate logistic regression to generate age-adjusted odds ratios (ORadj) and 95% confidence intervals (CI). Results: Fifty-three AGC-grade LBC specimens (mean age; 57 yrs, age range; 18-95 yrs) and 338 NILM LBC specimens (mean age; 45 yrs, age range; 20-91 yrs) were screened for 37 types of HPV DNA: 13 high-risk (HR) HPV types and 24 low-risk (LR) HPV types. Any HR-HPV was present in 34% of AGC-grade specimens and 7.4% of NILM specimens (ORadj=9.11; 95% CI: 4.08-20.33, p-value\u3c0.001). When limited to HPV 16/18, at least one was present in 20.1% of AGC-grade specimens and 1.2% of NILM specimens (ORadj=40.10, 95% CI: 10.73- 149.88, p-value\u3c0.001). In contrast, prevalence of low-risk (LR) HPV was similar between the two groups: 15% of AGC-grade specimens and 17.2% of NILM specimens (ORadj=0.91; 95% CI: 0.35-2.31, p-value=0.834). Conclusion: AGC-grade specimens were found to contain a significantly higher rate of HR-HPV, especially HPV types 16 or 18 when compared to NILM specimens. These findings support the earlier recommendation that HPV testing should be performed on LBC specimens with AGC-grade diagnosis and suggests that genotyping may be a useful addition to the follow up testing being performed

Native diversity buffers against severity of non-native tree invasions

Determining the drivers of non-native plant invasions is critical for managing native ecosystems and limiting the spread of invasive species$^{1,2}$. Tree invasions in particular have been relatively overlooked, even though they have the potential to transform ecosystems and economies$^{3,4}$. Here, leveraging global tree databases$^{5,6,7}$, we explore how the phylogenetic and functional diversity of native tree communities, human pressure and the environment influence the establishment of non-native tree species and the subsequent invasion severity. We find that anthropogenic factors are key to predicting whether a location is invaded, but that invasion severity is underpinned by native diversity, with higher diversity predicting lower invasion severity. Temperature and precipitation emerge as strong predictors of invasion strategy, with non-native species invading successfully when they are similar to the native community in cold or dry extremes. Yet, despite the influence of these ecological forces in determining invasion strategy, we find evidence that these patterns can be obscured by human activity, with lower ecological signal in areas with higher proximity to shipping ports. Our global perspective of non-native tree invasion highlights that human drivers influence non-native tree presence, and that native phylogenetic and functional diversity have a critical role in the establishment and spread of subsequent invasions

Native diversity buffers against severity of non-native tree invasions.

Determining the drivers of non-native plant invasions is critical for managing native ecosystems and limiting the spread of invasive species1,2. Tree invasions in particular have been relatively overlooked, even though they have the potential to transform ecosystems and economies3,4. Here, leveraging global tree databases5-7, we explore how the phylogenetic and functional diversity of native tree communities, human pressure and the environment influence the establishment of non-native tree species and the subsequent invasion severity. We find that anthropogenic factors are key to predicting whether a location is invaded, but that invasion severity is underpinned by native diversity, with higher diversity predicting lower invasion severity. Temperature and precipitation emerge as strong predictors of invasion strategy, with non-native species invading successfully when they are similar to the native community in cold or dry extremes. Yet, despite the influence of these ecological forces in determining invasion strategy, we find evidence that these patterns can be obscured by human activity, with lower ecological signal in areas with higher proximity to shipping ports. Our global perspective of non-native tree invasion highlights that human drivers influence non-native tree presence, and that native phylogenetic and functional diversity have a critical role in the establishment and spread of subsequent invasions

Native diversity buffers against severity of non-native tree invasions

Determining the drivers of non-native plant invasions is critical for managing native ecosystems and limiting the spread of invasive species1,2. Tree invasions in particular have been relatively overlooked, even though they have the potential to transform ecosystems and economies3,4. Here, leveraging global tree databases5-7, we explore how the phylogenetic and functional diversity of native tree communities, human pressure and the environment influence the establishment of non-native tree species and the subsequent invasion severity. We find that anthropogenic factors are key to predicting whether a location is invaded, but that invasion severity is underpinned by native diversity, with higher diversity predicting lower invasion severity. Temperature and precipitation emerge as strong predictors of invasion strategy, with non-native species invading successfully when they are similar to the native community in cold or dry extremes. Yet, despite the influence of these ecological forces in determining invasion strategy, we find evidence that these patterns can be obscured by human activity, with lower ecological signal in areas with higher proximity to shipping ports. Our global perspective of non-native tree invasion highlights that human drivers influence non-native tree presence, and that native phylogenetic and functional diversity have a critical role in the establishment and spread of subsequent invasions

Digital Food and foodways. How online food practices and narratives shape the Italian diaspora

The article discusses the role of online food practices and narratives in the formation of transnational identities and communities. Data has been collected in the framework of a doctoral research project undertaken by the author between 2009 and 2012 with a follow-up in 2014. The working hypothesis of this article is that the way Italians talk about food online and offline, the importance they give to ‘authentic’ food, and the way they share their love for Italian food with other members of the same diaspora reveal original insights into migrants’ personal and collective identities, their sense of belonging to the transnational community and processes of adjustment to a new place. Findings suggest that online culinary narratives and practices shape the Italian diaspora in unique ways, through the development of forms of virtual commensality and online mealtime socialization on Skype and by affecting intra and out-group relationships, thus working as elements of cultural identification and differentiation

Native diversity buffers against severity of non-native tree invasions

Determining the drivers of non-native plant invasions is critical for managing native ecosystems and limiting the spread of invasive species1,2. Tree invasions in particular have been relatively overlooked, even though they have the potential to transform ecosystems and economies3,4. Here, leveraging global tree databases5–7, we explore how the phylogenetic and functional diversity of native tree communities, human pressure and the environment influence the establishment of non-native tree species and the subsequent invasion severity. We find that anthropogenic factors are key to predicting whether a location is invaded, but that invasion severity is underpinned by native diversity, with higher diversity predicting lower invasion severity. Temperature and precipitation emerge as strong predictors of invasion strategy, with non-native species invading successfully when they are similar to the native community in cold or dry extremes. Yet, despite the influence of these ecological forces in determining invasion strategy, we find evidence that these patterns can be obscured by human activity, with lower ecological signal in areas with higher proximity to shipping ports. Our global perspective of non-native tree invasion highlights that human drivers influence non-native tree presence, and that native phylogenetic and functional diversity have a critical role in the establishment and spread of subsequent invasions

Web-based sex diaries and young adult men who have sex with men: Assessing feasibility, reactivity, and data agreement

We compared quantitative diary data with retrospective survey data collected from a cohort of young adult men who have sex with men (MSM) in Seattle, Washington. Ninety-five MSM, aged 16–30 years, completed web-based surveys every 3 months and were randomized to 4 diary submission schedules: every 2 weeks, once a week, twice a week, or never. We calculated diary completion rates and assessed agreement between daily diary data and aggregate retrospective survey data for sexual behavior measures. Over 6 months, 78% of participants completed at least 80% of their diary days, and the 2-week schedule had the highest and most consistent completion rate. The majority of sexual behavior and substance use measures had strong agreement between the diary and retrospective survey data (i.e., kappa>0.80 or concordance correlation coefficient ≥ 0.75), although we observed poorer agreement for some measures of numbers of anal sex acts. There were no significant differences in mean responses across diary schedules. We observed some evidence of reactivity (i.e., a difference in behavior associated with diary completion). Participants not assigned diaries reported significantly more unprotected anal sex acts and were more likely to be newly diagnosed with HIV or another sexually transmitted infection compared to those assigned active diary schedules. This study suggests that sexual behavior data collected from young adult MSM during 3-month retrospective survey—an interval commonly used in sexual behavior research—are likely valid. Diaries, however, may have greater utility in sexual behavioral research in which counts, timing, sequence, or within-person variation over time are of particular import