Observation of Skewed Electromagnetic Wakefields in an Asymmetric Structure Driven by Flat Electron Bunches

Relativistic charged-particle beams that generate intense longitudinal fields in accelerating structures also inherently couple to transverse modes. The effects of this coupling may lead to beam breakup instability and thus must be countered to preserve beam quality in applications such as linear colliders. Beams with highly asymmetric transverse sizes (flat beams) have been shown to suppress the initial instability in slab-symmetric structures. However, as the coupling to transverse modes remains, this solution serves only to delay instability. In order to understand the hazards of transverse coupling in such a case, we describe here an experiment characterizing the transverse effects on a flat beam, traversing near a planar dielectric lined structure. The measurements reveal the emergence of a previously unobserved skew-quadrupolelike interaction when the beam is canted transversely, which is not present when the flat beam travels parallel to the dielectric surface. We deploy a multipole field fitting algorithm to reconstruct the projected transverse wakefields from the data. We generate the effective kick vector map using a simple two-particle theoretical model, with particle-in-cell simulations used to provide further insight for realistic particle distributions.

Acceptance and use of condoms among school-aged young people in Australia

BACKGROUND

Despite availability of vaccines or medical prophylaxis for some sexually transmissible infections (STIs), promoting condom use remains an important public health strategy for the prevention of STIs. Recent research shows that regular condom use among young people in Australia has declined over the past decade, while the rate of common STIs has increased.

METHOD

In this paper, we report findings from a large survey of school-aged young people in Australia (14-18years old) in which we looked at the association between condom use and positive feelings about sex, beliefs about social acceptability of condoms and confidence talking with partners about sex and condoms.

RESULTS

Communication and relational factors supported more consistent condom use. Participants were more likely to regularly use condoms if they discussed condom use with a sexual partner, perceived condom use to be easy (a measure that included perceived ease of discussing condoms with a partner) and perceived condom use to offer social or relational benefits, including perceiving condom use as a demonstration of care for a partner. Young men were more likely to report positive feelings about sex and regular condom use than young women. Young women were less likely than young men or trans and non-binary young people to report regular condom use.

CONCLUSIONS

The study shows the importance of supporting young people to build confidence expressing sexual needs and wants with partners. Public health approaches to STI prevention need to consider condom promotion in the context of young people's contemporary sexual, gendered and relationships cultures.

Mental Health Practitioners' Knowledge of LGBTQA+ Conversion Practices and Their Perceptions of Impacts on Survivors

The aims of this study were to identify Australian mental health practitioners' knowledge of what LGBTQA+ conversion practices are and their perceptions of impacts on survivors. We interviewed 18 mental health workers from a range of clinical modalities who were practicing in Australia. We used reflexive thematic analytic techniques to identify themes that characterized Australian mental health practitioners' knowledge of LGBTQA+ conversion practices and perceptions of the impacts of such practices on survivors. Practitioners' understandings of what constitutes LGBTQA+ conversion practices were varied and derived from a range of sources, and practitioners' perceptions of the impacts that conversion practices had on survivors ranged from undeveloped to nuanced. Generalist and specialist practitioners provided vastly different responses. We identified the following four themes: (1) inexperienced practitioners' understandings were limited and reliant on stereotypes about conversion practices; (2) specialist practitioners' understandings were refined and match experiences reported by survivors; (3) generalist practitioners emphasized specific and undeveloped negative impacts; (4) specialist practitioners were aware of deeper harms and the need for sustained support. These themes may be translated into strategies to facilitate improved services offered by practitioners, which may assist survivors in managing and coping with the trauma associated with exposure to these practices.

The risks and benefits of technologised sexual practice scale: a quantitative measure of technology facilitated sex and intimacy

BACKGROUND

Technologies such as the Internet, smartphones, and sex toys have demonstrated the capacity to facilitate and enhance sexual and intimate practice by offering new ways to meet sexual partners, maintain and establish intimate connections, and providing access to sexual education and exposure to new ways of engaging in sex. They have also afforded novel risks to safety, privacy, and sexual autonomy. Understanding how people perceive and experience both the risks and benefits of using technology to facilitate sex and intimacy is important to understanding contemporary sexual practice, health, and pleasure. However, research in this space is currently hampered by a lack of quantitative measures to accurately and holistically assess both the risks and benefits in the context of technologised sexual practices.

METHODS

To facilitate a nuanced quantitative exploration of these concepts, we present the psychometric properties of the newly developed Risks and Benefits of Technologised Sexual Practice Scale .

RESULTS

Using an exploratory (Study 1, n =445) and confirmatory factor analysis (Study 2, n =500), this paper presents evidence for a 6-factor scale (Benefits (3): 'sexual gratification', 'connection', and 'access to information and culture'; Risks (3): 'concerns', 'worries', and 'knowledge of rights and ownership').

CONCLUSION

This scale may be used to contribute to research areas including sexual health, sexual behaviour, sexual education, online connection, online safety, and digital literacy with the aim to contribute to a sex- and technology-positive framework for understanding sexual health and pleasure.

Typologies of alcohol and other drug-related risk among lesbian, gay, bisexual, transgender (trans) and queer adults

INTRODUCTION

Prevalence and patterns of alcohol and other drug (AOD) use among specific lesbian, gay, bisexual, transgender (trans) and queer (LGBTQ+) subpopulations are well established. However, patterns of substance-related risk have been less thoroughly explored. This study aimed to determine typologies AOD risk among LGBTQ+ adults in Australia.

METHOD

Latent class analyses were performed to determine distinct patterns of AOD risk (n = 6835), as measured by the Alcohol Use Disorder Identification Test and Drug Abuse Screening Tool. Demographic characteristics, experience of harassment, assault and/or threats, mental wellbeing and LGBTQ+ connectedness were compared across emergent classes.

RESULTS

AOD risk was characterised as 'no risk' (13.3% of sample), 'low risk' (15.1%), 'moderate risk' (alcohol + other drugs; 30.1%), or 'moderate alcohol only risk' (41.5%). The 'moderate risk' class was the most likely class to report recent sexual assault, verbal abuse, harassment and physical threats compared to other classes, while those in the 'moderate alcohol only risk' group were least likely to report these experiences of all classes. However, both the 'moderate risk' and 'moderate alcohol risk only' classes reported greater mental wellbeing and LGBTQ+ connectedness compared to the 'no risk' and 'low risk' classes.

DISCUSSION AND CONCLUSIONS

Our findings indicate that level of AOD risk is not uniform among some LGBTQ+ adults, nor is the distribution of harms experienced by them. Tailored harm-reduction interventions may be fruitful in attenuating harms based on risk profile; most specifically, LGBTQ+ individuals engaging in moderately risky concurrent AOD use.

Quality of life among people living with HIV aged 50 years and over in Australia: Identifying opportunities to support better ageing

OBJECTIVES

Improved life expectancy has led to an ageing population of people living with HIV in most countries. Research on ageing among people living with HIV has predominantly focused on physical and health-related quality of life rather than multidimensional quality of life. We measured quality of life among older people living with HIV in Australia and identified opportunities to guide the development and implementation of appropriate interventions.

METHODS

In a national health and wellbeing survey of Australian people living with HIV, participants aged ≥50 years completed additional questions relevant to ageing. Quality of life was measured using PozQoL, a validated multidimensional instrument assessing quality of life among people living with HIV (range 1-5). Exploratory bivariate analyses aimed to identify sociodemographic characteristics associated with quality of life. Adjusted linear regressions aimed to assess changes in PozQoL score associated with recent experiences (last 12 months) of four exposures: food insecurity, HIV-related stigma, isolation from the HIV community, and difficulties accessing non-HIV health services.

RESULTS

Among 319 older people living with HIV, the mean PozQol score was 3.30 (95% confidence interval [CI] 3.20-3.39). In bivariate analyses, PozQol scores were significantly higher among participants who were older (p = 0.006), had higher educational attainment (p = 0.009), were in a relationship (p = 0.005), were employed (p = 0.005), and had a higher income (p = 0.001). In adjusted regression models, PozQoL scores were lower among participants who reported recent experiences of food insecurity (β -0.49; 95% CI -0.74 to -0.24), stigma (β -0.53; 95% CI -0.73 to -0.33), isolation from the HIV community (β -0.49; 95% CI -0.70 to -0.29), and difficulties accessing non-HIV health services (β -0.50; 95% CI -0.71 to -0.30).

CONCLUSIONS

Overall, older people living with HIV in this study had a moderate quality of life. Our findings suggest that HIV services should integrate programmes to support economic security and foster connections within the HIV community and across health services.

Sex on screens: the language of sexting and amateur pornography

Frequently referred to as 'sexting' or 'amateur pornography', digital sexual images and videos form an increasingly common part of adult sexual relationships. However, the vocabulary available to speak about these practices is limited, with 'sexting' often associated with young people in negative terms. This study is based on 23 interviews with adults in Australia who are 25 years and older. It explores the language adults employ to discuss and comprehend the creation and sharing of sexualised images and videos. Findings show that negative or positive connotations associated with the terms used to discuss sexual images and videos influenced the ways participants drew on, or rejected, terms to align digital practices with their sexual subjectivity. Reticence to engage in active communication about digital sexual practices, and participant's distancing of their own practices from the terms commonly understood to refer to such practices, made it difficult to engage in conversations about consent or desire in the context of digitally mediated sex. Findings provide insight into the ways that -digital sexual subjectivities are discursively framed and extend these implications for sexual health promotion with respect to how to frame messages of digital sexual safety in a sex-positive and open way.

People living with HIV who inject or have injected non-prescription drugs: Evidence of substantial differences in health inequalities and experiences of clinical care

INTRODUCTION

This study investigates differences in health and well-being associated with current, past or no injecting drug use (IDU) among people living with HIV (PLHIV) in Australia, identifying key health care considerations between injecting experiences.

METHODS

Data were extracted from the HIV Futures 9 study; a survey of PLHIV conducted in 2018-2019. Chi-square and analysis of variance analyses compared clinical and treatment characteristics, major physical and mental comorbidities, sexually transmitted infection diagnoses, and quality of life for those who reported current (last 12 months), past (12+ months ago) or no IDU.

RESULTS

Current IDU (n = 106) was associated with higher rates of sexually transmitted infection testing and diagnoses, higher frequency of self-reported antiretroviral therapy non-adherence due to drug use and greater social quality of life than past (n = 126) or no IDU (n = 508; total N = 740). Past and current IDUs were associated with more mental illness diagnoses and self-reported concern about drug use. Past IDU was associated with more physical comorbidities, lower satisfaction with clinical care and greater difficulty in affording health care than current or no IDU.

DISCUSSION AND CONCLUSIONS

Past and current IDUs are associated with unique health concerns. However, past IDU appears to be related to greater dissatisfaction in navigating health care than individuals with current IDU experience. Higher social connection and the types of services being accessed by individuals who currently inject may play a role in shaping service satisfaction. Peer-based interventions to help support individuals in accessing services that are affirming of their needs is an ongoing priority.

Phase Space Reconstruction from Accelerator Beam Measurements Using Neural Networks and Differentiable Simulations

Characterizing the phase space distribution of particle beams in accelerators is a central part of understanding beam dynamics and improving accelerator performance. However, conventional analysis methods either use simplifying assumptions or require specialized diagnostics to infer high-dimensional (>2D) beam properties. In this Letter, we introduce a general-purpose algorithm that combines neural networks with differentiable particle tracking to efficiently reconstruct high-dimensional phase space distributions without using specialized beam diagnostics or beam manipulations. We demonstrate that our algorithm accurately reconstructs detailed 4D phase space distributions with corresponding confidence intervals in both simulation and experiment using a limited number of measurements from a single focusing quadrupole and diagnostic screen. This technique allows for the measurement of multiple correlated phase spaces simultaneously, which will enable simplified 6D phase space distribution reconstructions in the future.

Fabrication of THz corrugated wakefield structure and its high power test

We present overall process for developing terahertz (THz) corrugated structure and its beam-based measurement results. 0.2-THz corrugated structures were fabricated by die stamping method as the first step demonstration towards GW THz radiation source and GV/m THz wakefield accelerator. 150-[Formula: see text]m thick disks were produced from an OFHC (C10100) foil by stamping. Two types of disks were stacked alternately to form 46 mm structure with [Formula: see text] 170 corrugations. Custom assembly was designed to provide diffusion bonding with a high precision alignment of disks. The compliance of the fabricated structure have been verified through beam-based wakefield measurement at Argonne Wakefield Accelerator Facility. Both measured longitudinal and transverse wakefield showed good agreement with simulated wakefields. Measured peak gradients, 9.4 MV/m/nC for a long single bunch and 35.4 MV/m/nC for a four bunch trains, showed good agreement with the simulation.

Antiretroviral Therapy Use, Viral Detectability and Fear of Onward Transmission Among People Living with HIV in Australia: Changes Between 1997 and 2018

This paper examines how antiretroviral therapy (ART) use and fears towards the onward transmission of HIV have changed among people living with HIV (PLHIV) in Australia between 1997 and 2018. Participants were recruited as part of the HIV Futures study, a large cross-sectional survey of PLHIV in Australia, in 1997, 2003, 2012 and 2018 (total n = 3889). ART use, viral load detectability, and fear of onward HIV transmission were compared between years. Predictors of onward transmission fear were assessed among the 2018 subsample. While ART use within our sample decreased between 1997 and 2003, it subsequently increased to 97% in 2018. Self-reported viral load undetectability steadily increased over time, up to 88% in 2018. Notably, fewer PLHIV reported being fearful of transmitting HIV in 2018 compared to all other years. Being unfamiliar with the undetectable = untransmissible health movement, and having a detectable or uncertain viral load at last test, were significant predictors of being fearful of onward HIV transmission. Beyond the immediate medical considerations of HIV treatment, these results suggest that the undetectable = untransmissible movement may play a critical role in attenuating burdens experienced by PLHIV in Australia and that such messaging, in tandem with early and consistent ART use, should remain a salient feature of heath messaging among this population.

Health literacy, financial insecurity and health outcomes among people living with HIV in Australia

It is well documented that lower socio-economic status is associated with poorer health outcomes, while health literacy is considered important for improving health. What is less clear, is the extent to which greater health literacy can improve health outcomes among people for whom poverty or financial insecurity are important barriers to health. The paper presents findings from an Australian survey of people living with HIV (PLHIV) (N = 835) in which we explored the relationship between financial insecurity and health outcomes, looking at the extent to which health literacy mediates this relationship. The study drew on a comprehensive definition of health literacy, measuring participant’s confidence to communicate with healthcare providers, navigate the health system and take an active stance in relation to their health. Findings showed that financial insecurity was associated with lower health literacy and poorer self-reported physical and mental health. Health literacy mediated 16.2% of the effect of financial insecurity on physical health scores and 16.6% of the effect of financial insecurity on mental health scores. This suggests that programmes which seek to build health literacy among PLHIV may improve health outcomes among PLHIV who are struggling financially. Health literacy programmes are likely to be effective if they build confidence and resourcefulness among people to engage with health information, decision-making and care.

Exploring the Public Health and Social Implications of Future Curative Hepatitis B Interventions

Hepatitis B is a significant global health issue where the 296 million people estimated to live with the infection risk liver disease or cancer without clinical intervention. The World Health Organization has committed to eliminating viral hepatitis as a public health threat by 2030, with future curative hepatitis B interventions potentially revolutionizing public health responses to hepatitis B, and being essential for viral hepatitis elimination. Understanding the social and public health implications of any cure is imperative for its successful implementation. This exploratory research, using semi-structured qualitative interviews with a broad range of professional stakeholders identifies the public health elements needed to ensure that a hepatitis B cure can be accessed by all people with hepatitis B. Issues highlighted by the experience of hepatitis C cure access include preparatory work to reorientate policy settings, develop resourcing options, and the appropriateness of health service delivery models. While the form and complexity of curative hepatitis B interventions are to be determined, addressing current disparities in cascade of care figures is imperative with implementation models needing to respond to the cultural contexts, social implications, and health needs of people with hepatitis B, with cure endpoints and discourse being contested.

Religious trauma and moral injury from LGBTQA+ conversion practices

Religion-based LGBTQA + conversion practices frame all people as potential heterosexuals whose gender aligns with their birth sex (in a cisgender binary model of male and female sexes). Deviation from this heterosexual cisgender social identity model is cast as curable 'sexual brokenness'. However, research shows conversion practices are harmful, and particularly associated with increased experiences of abuse, mental health diagnoses, and suicidality. This paper explores their contribution to the particular harms of moral injury and religious trauma, drawing firstly on the foundational moral injury literature to offer a unique conceptual framework of spiritual harm and moral injury, and secondly on a rare qualitative 2016-2021 study of the spiritual harms reported in semi-structured interviews of 42 survivors of LGBTQA + change and suppression practices in Australia. The paper examines the survivors' support needs around the nature and extent of religious trauma and moral injury, to inform services working towards supporting their recovery from such experiences and their resolution of conflicts deeply bound in their sense of self and belonging. It argues that impairment of conversion survivors' relationships with religious communities, and religious self-concepts, point to the need for additional improvements in pastoral practice.

Suicidal Ideation and Suicide Attempts Among Lesbian, Gay, Bisexual, Pansexual, Queer, and Asexual Youth: Differential Impacts of Sexual Orientation, Verbal, Physical, or Sexual Harassment or Assault, Conversion Practices, Family or Household Religiosity, and School Experience

Purpose: This article examines factors associated with suicidal ideation and suicide attempts in the past 12 months among lesbian, gay, bisexual, pansexual, queer, asexual, or other non-heterosexual identifying youth (LGBQA+). Methods: A national Australian cross-sectional online survey was conducted involving 4370 cisgender LGBQA+ participants aged 14-21 years from September to October 2019. Multivariable logistic regression analyses were performed to examine significant factors associated with suicidal ideation and suicide attempts in the past 12 months. Research ethics approval for the WTI4 study was granted by the La Trobe University Human Research Ethics Committee and the ACON Research Ethics Review Committee. Results: Overall, 56.4% of participants reported suicidal ideation and 8.9% a suicide attempt in the past 12 months. Multivariable regression results show that participants aged younger than 18 years, lesbian (compared with gay) identifying, those living in rural or remote locations (compared with inner city), those reporting any verbal, physical, or sexual harassment or assault based on sexual orientation or gender identity, or who had a religious family or household, or had experienced conversion practices in the past 12 months reported higher levels of suicidal ideation or suicide attempts. Those who reported feeling part of their school reported lower levels of suicidal ideation and suicide attempts. Conclusion: High levels of suicidal ideation and suicide attempts among young LGBQA+ people in Australia highlight a need for the ongoing inclusion of LGBQA+ youth as a priority population for suicide prevention. The findings illustrate key factors associated with a greater risk of suicidality among young LGBQA+ people. These findings can be used to inform the provision of tailored support services, including culturally safe suicide prevention programs and efforts to address stigma, discrimination, and conversion practices.

Traversing TechSex: benefits and risks in digitally mediated sex and relationships

BACKGROUND

Digital technologies play a significant role in people's sexual and intimate lives via smart phones, cameras, dating apps and social media. Although there is a large body of research on the potential risks posed by these technologies, research on benefits and pleasures is limited.

METHODS

This study explored digital sexual practices, including perceptions of risks and benefits among a sample of Australian adults (n=445). Data were collected in 2020 via an online survey. Descriptive and bivariate analyses were undertaken to identify significant relationships between demographic variables and the use of technologies in relation to perceived risks and benefits. The mean age of participants was 42 years, over half were women (58.5%) and identified as heterosexual (61.1%).

RESULTS

Findings reveal that use of digital media was common in participants' sex lives and relationships; 60.3% of participants had viewed pornography online, 34.9% had used dating apps, and 33.9% had sent sexual or naked self-images to another person. Over one in three reported positive outcomes from this: 38.2% felt emotionally connected to their partners due to online communication; 38.0% agreed that digital technologies facilitated closer connections;however, the majority of participants were aware of potential risks associated with online sexual engagement, particularly non-consensual exposure of their sexual or naked images, with women expressing greater concern.

CONCLUSIONS

Policy, legal and educational responses should be based on holistic understanding of digital sexual engagement, acknowledging the ways in which technologies can support sexual relationships while also building people's knowledge and capacity to manage risks.

Alcohol and tobacco consumption among Australian sexual minority women: Patterns of use and service engagement

BACKGROUND

Sexual minority women consume both alcohol and tobacco at higher rates than heterosexual women. However, various sociodemographic and cultural factors associated with these practices among sexual minority women in Australia are not well understood, nor are the factors associated with seeking alcohol-related support.

METHODS

This study utilised data from cisgender sexual minority women respondents of Private Lives 3: a national, online, cross-sectional survey of the health and wellbeing of LGBTIQ adults in Australia aged 18+ conducted in 2019. Multivariable analyses were performed to identify co-existing smoking and alcohol use, sociodemographic factors associated with smoking, alcohol consumption and seeking alcohol-related support.

RESULTS

Of 2,647 sexual minority women respondents, 16.90% were currently smoking tobacco, 7.67% smoking tobacco daily and 60.50% reported potentially risky patterns of alcohol consumption. Tobacco and potentially risky alcohol consumption were found to frequently co-occur. Women who identified as queer were more likely than lesbian identifying women to currently smoke tobacco and to smoke tobacco daily. Tobacco consumption was associated with increased age, unemployment, low-mid range income and secondary-school education, while potential risky drinking was associated with living in outer urban or rural areas and being Australian born . Self-reporting having struggled with alcohol in the past twelve months was associated with residential location. Less than 3% of the sample has sought help for alcohol use. Seeking support was more likely as women aged, and with potentially risky drinking, and much more likely with self-perceived struggles with alcohol.

CONCLUSIONS

The findings highlight the need for future alcohol and tobacco use health promotion strategies focussing on sexual minority women to attend to within group differences that relate to risk of higher consumption. They also highlight the need for approaches that empower sexual minority women to self-identify when they are struggling with alcohol use and encourage seeking support with organisations that are affirming of sexual minority women.

Bisexual Men Living with HIV: Wellbeing, Connectedness and the Impact of Stigma

Social research with people living with HIV (PLHIV) rarely distinguishes between gay men and bisexual men. However, bisexual men may have unique experiences of HIV-related stigma and distinct support needs. In this paper, findings are presented from a cross-sectional survey of Australian PLHIV, which included the Berger (HIV) stigma scale. A total of 872 PLHIV completed the survey, of which 48 (6.0%) were bisexual men. Bisexual men reported higher levels of internalised HIV-related stigma, greater negative self-image and poorer emotional wellbeing than gay men. Bisexual men also reported less social support, less connection with lesbian, gay, bisexual, transgender and queer (LGBTQ) communities, and less connection with other PLHIV. Analysis of data from an open-text question revealed feelings of social isolation and fear of rejection was associated with participant's HIV diagnosis. Study findings suggest that existing social supports for PLHIV may not adequately address the unique support needs of bisexual men.

Non-prescription drug use among HIV positive gay and bisexual men in Australia: A latent class analysis and comparison of health and well-being

BACKGROUND

Establishing typologies of drug use among gay and bisexual men who have sex with men (GBMSM) who are living with HIV, as well as differences in health outcomes between them, is important in addressing health inequalities within this population. We sought to determine how use of non-prescription drugs is clustered for these individuals and to establish differences in their broader health and well-being, including STI diagnosis, mental health, and physical health.

METHOD

We examined past-year drug use reported by 747 GBMSM in Australia as part of the HIV Futures 8 survey, a large cross-sectional survey of people living with HIV. We tested between two and five latent class models of specific drug use and conducted cross-class comparisons of past-year STI diagnosis and self-reported mental and physical health.

RESULTS

We identified four distinct drug use typologies: 'chemsex-related use', 'minimal use', 'analgesic and sedative use', and 'diverse use'. The 'chemsex use' and 'diverse use' classes had a markedly higher likelihood of STI diagnosis relative to the other two classes, while the 'analgesic and sedative use' class reported markedly poorer physical and mental health scores than the other classes.

CONCLUSIONS

While GBMSM living with HIV in Australia have higher rates of drug use compared to other GBMSM, and the general population, our analysis indicates that patterns of drug use are not uniform within this group. Specific patterns of drug use are related to distinct health inequalities, and this should be accounted for when addressing the needs of men who use drugs differently.

Making publics in a pandemic: Posthuman relationalities, 'viral' intimacies and COVID-19

The COVID-19 pandemic has placed sexual relationships into sharp focus as strict containment measures, including physical distancing and 'stay at home' restrictions, were initiated to control the spread of the virus. Governments in some jurisdictions prevented contact between non-cohabiting sexual partners (except for couples in pre-existing relationships), while community organisations recommended people avoid casual sexual encounters. This article analyses Australian media articles, commentary and public health messages published during March to October 2020 to explore the normative assumptions underpinning these measures. Applying posthumanist perspectives and Warner's (2002) conceptualisation of 'publics', we consider how COVID-19 public health advice enacts the (human) subject of public health as monogamous, coupled, and living with their partner or nuclear family. Those in non-normative relationships and households are not only excluded from this narrow enactment of the 'ideal' public health subject, but are rendered potentially risky disease vectors by virtue of their alternative kinship arrangements. We explore the implications of these findings for the more-than-human relationalities that shape health inequalities and processes of marginalisation during public health crises, and we offer suggestions for public health measures that address the needs of diverse 'publics'.

Social inclusion of LGBTQ and gender diverse adults with intellectual disability in disability services: A systematic review of the literature

BACKGROUND

Lesbian, gay, bisexual, transgender, queer (LGBTQ) and gender diverse adults with intellectual disability experience exclusion within disability services.

OBJECTIVE

This review explores the experiences of social inclusion/exclusion of this cohort in the context of disability services.

SEARCH METHOD

A systematic search was conducted of peer-reviewed research published between January 2014 and April 2019. Five databases returned 66 articles plus three from hand searches.

APPRAISAL AND SYNTHESIS

Nine articles were included in this review. The Critical Appraisal Skills Programme tool was used to assess the quality of the research. NVivo 12 was used as a tool to organise the articles.

RESULTS

Marginalisation of LGBTQ adults with intellectual disability in western societies is mirrored in disability organisations. There remains a dearth of research into experiences of transgender people with intellectual disability who use disability services.

CONCLUSIONS

Research into interventions that support the inclusion of this cohort in disability support services is needed.

Hierarchical Study of the Reactions of Hydrogen Atoms with Alkenes: A Theoretical Study of the Reactions of Hydrogen Atoms with C2-C4 Alkenes

The present study complements our previous studies of the reactions of hydrogen atoms with C₅ alkene species including 1- and 2-pentene and the branched isomers (2-methyl-1-butene, 2-methyl-2-butene, and 3-methyl-1-butene), by studying the reactions of hydrogen atoms with C₂–C₄ alkenes (ethylene, propene, 1- and 2-butene, and isobutene). The aim of the current work is to develop a hierarchical set of rate constants for Ḣ atom addition reactions to C₂–C₅ alkenes, both linear and branched, which can be used in the development of chemical kinetic models. High-pressure limiting and pressure-dependent rate constants are calculated using the Rice–Ramsperger–Kassel–Marcus (RRKM) theory and a one-dimensional master equation (ME). Rate constant recommendations for Ḣ atom addition and abstraction reactions in addition to alkyl radical decomposition reactions are also proposed and provide a useful tool for use in mechanisms of larger alkenes for which calculations do not exist. Additionally, validation of our theoretical results with single-pulse shock-tube pyrolysis experiments is carried out. An improvement in species mole fraction predictions for alkene pyrolysis is observed, showing the relevance of the present study.

Anxiety about HIV criminalisation among people living with HIV in Australia

Many countries, including Australia, have laws that enable criminal prosecution of an individual based on reckless or intentional transmission of HIV to another person. Previous research has suggested that criminalisation of HIV may serve to hamper public health efforts by inhibiting HIV status disclosure or testing. Limited research to date has sought to examine the broader impact of criminalisation on the health and wellbeing of people living with HIV, which this paper aims to address. Drawing on cross-sectional data from 895 people living with HIV in Australia, this paper describes associations between standard measures of mental health and resilience with a newly devised scale measuring anxiety about HIV criminalisation. Findings suggest that laws criminalising HIV transmission have a broadly negative impact on wellbeing of people living with HIV, a situation that is exacerbated for gay and bisexual men, and other people living with HIV who may face intersecting forms of marginalisation based on race, gender or class. There is little justification for these laws being applied in Australia and the findings add weight to advocacy seeking to overturn criminalisation across the world.

Bisexual mental health and gender diversity: Findings from the 'Who I Am' study

BACKGROUND AND OBJECTIVES

People who identify as bisexual, transgender or gender diverse report poorer mental health than their homosexual and cisgender counterparts. The aim of this article is to shed light on the mental health experiences of gender diverse bisexual people and the reasons for poor mental health in this group.

METHOD

This article reports on a subset of a large cross-sectional survey of bisexual Australians (n = 2651), examining predictors of poor mental health among the 19% (n = 474) of respondents who identified as transgender or gender diverse.

RESULTS

Very high rates of psychological distress, mental illness and suicidality were reported by participants who identified as transgender and gender diverse. Higher levels of internalised biphobia and less participation in lesbian, gay, bisexual, transgender and intersex community events predicted higher psychological distress (P <0.05).

DISCUSSION

The high rates of mental health problems among transgender and gender diverse bisexual Australians mean it is essential that general practitioners and those on the frontline of mental healthcare provision recognise the need to engage with these groups. This research provides new insights to support and inform this engagement.

Social determinants of quality of life among PLHIV in Australia: implications for health promotion

A cascade of care model is central to contemporary approaches to HIV prevention. The model prioritizes strategies to increase rates of HIV testing and promote early and sustained uptake of antiretroviral treatment (ART) among people living with HIV (PLHIV). The model aims to prevent new HIV transmissions by increasing the number of PLHIV who have achieved HIV viral suppression. However, good quality of life (QoL) among PLHIV has been proposed as an additional goal. This prioritizes the basic right of PLHIV to lead meaningful lives and acknowledges the relationship between better QoL and consistent ART use. A better understanding of factors associated with the QoL can thus inform health promotion programmes for PLHIV. In this study, N=465 Australian participants, recruited through social media and various HIV community organizations, completed an online survey that included a measure of QoL and a range of demographic, health-related and social variables. Overall, social factors accounted uniquely for the most variance in QoL (18%), followed by health-related (11%) and demographic factors (2%). Social support, HIV-related discrimination and treatment convenience were among the strongest determinants of QoL. These findings reinforce the importance of a more holistic approach to health promotion among PLHIV. Specifically, our results indicate that to improve the QoL of PLHIV and to boost related public health benefits, community advocates and healthcare professionals must be responsive to the broader psychological, social and functional needs of PLHIV.

Theoretical Study of the Reaction of Hydrogen Atoms with Three Pentene Isomers: 2-Methyl-1-butene, 2-Methyl-2-butene, and 3-Methyl-1-butene

This paper presents a comprehensive potential energy surface (PES) for hydrogen atom addition to and abstraction from 2-methyl-1-butene, 2-methyl-2-butene, and 3-methyl-1-butene and the subsequent ß-scission and H atom transfer reactions. Thermochemical parameters for species on the Ċ₅H₁₁ potential energy surface (PES) were calculated as a function of temperature (298-2000 K), using a series of isodesmic reactions to determine the formation enthalpies. High-pressure limiting and pressure-dependent rate constants were calculated using Rice-Ramsperger-Kassel-Marcus theory with a one-dimensional master equation. A number of studies have highlighted the fact that C₅ intermediate species play a role in polyaromatic hydrocarbon formation and that a fuel's chemical structure can be key in understanding the intermediate species formed during fuel decomposition. Rate constant recommendations for both Ḣ atom addition to, and H-atom abstraction by Ḣ atoms from, linear and branched alkenes have subsequently been proposed by incorporating our earlier work on 1- and 2-pentene, and these can be used in mechanisms of larger alkenes for which calculations do not exist. The current set of rate constants for the reactions of Ḣ atoms with both linear and branched C₅ alkenes, including their chemically activated pathways, are the first available in the literature of any reasonable fidelity for combustion modeling and are important for gasoline mechanisms. Validation of our theoretical results with pyrolysis experiments of 2-methyl-1-butene, 2-methyl-2-butene, and 3-methyl-1-butene at 2 bar in a single pulse shock tube (SPST) were carried out, with satisfactory agreement observed.

Acceptability, motivation and the prospect of cure for people living with HIV and their healthcare providers in HIV cure-focused treatment interruption studies

Background

Analytical treatment interruptions (ATI) are commonly used clinical endpoints to assess interventions aimed at curing HIV or achieving antiretroviral therapy (ART)-free HIV remission. Understanding the acceptability of ATI amongst people living with HIV (PLHIV) and their HIV healthcare providers (HHP) is limited.

Methods

Two online surveys for PLHIV and HHP assessed awareness and acceptability of ATI, and understanding of the prospect for HIV cure in the future. Responses were collected from July 2017–January 2018. A descriptive analysis was performed and similar questions across the two surveys were compared using χ squared test.

Results

442 PLHIV and 144 HHP completed the survey. 105/400 (26%) PLHIV had ever interrupted ART, 8% of which were in a clinical trial. Altruistic motivations were drivers of participation of PLHIV in cure related research. 81/135 (60%) HHP would support their patients wishing to enrol in an HIV cure-focused trial, but fewer would promote and allow such participation (25% and 31% respectively). Compared to HHP, PLHIV were more likely to believe that an HIV cure would be achievable within 10 years (55% vs. 19%, p < 0.001), had less awareness of ATI (46% vs. 62%, p < 0.001) and were less likely to have had experience of either participation or enrolment in an ATI study (5% vs. 18%, p < 0.001)

Conclusion

PLHIV were more optimistic about the potential for HIV cure. HHP had more direct experience with HIV cure-focused studies. Educational strategies are required for both groups to increase understanding around ATIs in HIV cure research but should be tailored specifically to each group.

Time for revolution? Enhancing meaningful involvement of people living with HIV and affected communities in HIV cure-focused science

INTRODUCTION

Involving affected communities and people living with HIV (PLHIV) in HIV cure-focused clinical trials has ethical and practical benefits. However, there can be barriers to meaningful involvement of 'lay people' in scientific research meaning community consultation is often limited or tokenistic. This paper reports on an Australian project, the INSPIRE project (Improve, Nurture and Strengthen education, collaboration, and communication between PLHIV and Researchers), which aimed to explore barriers and enablers to enactment of the principles of meaningful involvement of PLHIV (MIPA) and affected communities in HIV cure-focused research.

METHODS

The project involved a workshop attended by 40 stakeholders involved in HIV care, research or advocacy including PLHIV, community organizations, basic scientists, and clinicians. The workshop involved a facilitated discussion about community involvement in a hypothetical HIV cure-focused clinical trial. Data were collected through notetaking and video recordings. Qualitative, thematic analysis was undertaken to organize the data and identify core themes related to MIPA.

RESULTS

Workshop discussions revealed community stakeholders often feel their involvement in HIV clinical research is undervalued, evidenced by limited financial remuneration and minimal capacity to influence the research design or processes. Building long-term, formal and informal relationships between community organizations, PLHIV, researchers and research teams or laboratories was identified as a strategy to support MIPA at all stages of a clinical trial, from design to dissemination of findings.

CONCLUSIONS

Enacting MIPA principles in HIV cure-focused research requires a better understanding of the potential to improve research outcomes and ensure quality in the research process.

Predictors of steroid-refractory immune checkpoint inhibitor associated myocarditis

Background/Introduction

Immune checkpoint inhibitor (ICI)-associated myocarditis has a high mortality rate of approximately 50%. Clinical decompensation often occurs despite first-line treatment with corticosteroids. Factors associated with steroid failure are currently unknown.

Purpose

To identify predictors of steroid failure in patients with ICI-associated myocarditis.

Methods

We developed a web-based registry to collect and study 157 cases with clinical manifestations of ICI-associated myocarditis across 16 countries. Steroid failure was defined as patients who were escalated to immunomodulators after ≥1mg/kg daily dose of prednisone or had in-hospital death due to myocarditis despite ≥1mg/kg daily dose of prednisone. Steroid response was defined as all other patients treated with steroids without escalation to immunomodulators and without death due to myocarditis. A multivariate logistic model accounting for age and sex was used to predict association with steroid failure.

Results

Compared to steroid responsive cases, steroid failure was more likely to result in fulminant myocarditis (56.7% vs 19.6%, OR=5.37 [2.62–10.98] p&lt;0.001) and all-cause in-hospital mortality (49.1% vs 12.9%, OR=6.50 [2.86–14.73] p&lt;0.001) with shorter time from presentation to death (27.5 vs 43.0 days HR: 2.56 [1.45–4.50] p=0.001). When adjusting for age and sex, cases were more likely to be steroid-refractory if they were female (46.7% vs 30.1%, OR=2.77 [1.31–5.85] p=0.007), higher body mass index (27.2 vs 22.0, OR=1.09 [1.01–1.18] p=0.012), had higher intake creatine kinase (2800.5 vs 528.0 U/L, OR=1.48 [1.14–1.90] p=0.003) had higher intake troponin T (1.40 vs 0.25 ng/mL OR=1.63 [1.00–2.64] p=0.049), or had one or more concomitant non-cardiac immune-related adverse event (90.0% vs 74.2%, OR=3.10 [1.14–8.25] p&lt;0.026). The only immune-related adverse events independently associated with steroid failure in myocarditis were myasthenia gravis-like syndrome (26.7% vs 8.2%, OR=3.84 [1.47–10.10] p=0.006) and myositis (45.0% vs 24.7%, OR=2.38 [1.16–4.92] p=0.018). Steroid failure was not significantly associated with cardiovascular or autoimmune history but was associated with a history of thymoma (12.0% vs 2.6%, OR=18.86 [0.10–356.7] p=0.05)

Conclusion(s)

Features such as female sex, high body mass index, and pre-existing thymoma as well as findings of elevated cardiac biomarkers and other non-cardiac immune-related adverse events – particularly myositis and myasthenia gravis-like syndrome – may represent a steroid-refractory phenotype of ICI-associated myocarditis. These results suggest that a multidisciplinary approach to diagnosing concomitant non-cardiac immune related adverse events is key to risk-stratifying ICI-associated myocarditis.

Forrest Plot

Funding Acknowledgement

Type of funding source: Private hospital(s). Main funding source(s): National Institutes of Health

Conceptualising the continuum of female genital fashioning practices

Genital fashioning practices, such as Brazilian waxing and female genital cosmetic surgery, have become increasingly prevalent within contemporary western societies. This paper explores the role of genital fashioning in the construction of contemporary femininity. It uses in-depth interviews and focus groups with Australian women aged 18-30 to investigate female genitalia as a site of alteration. Drawing on broader understandings of the body as socially mediated, this paper contends that multiple modification practices are employed to produce genital appearance. It departs from previous investigations which consider genital fashioning practices in isolation. In identifying the scope of genital fashioning, this research reveals a continuum of genital fashioning practices, both physically and discursively mobilised by women to negotiate their identity, sexuality, and femininity.

Who I am: Reflections on a successful bisexual research method

Bisexual people have consistently been found to experience poorer mental health than their lesbian, gay and heterosexual counterparts and more research is urgently needed to shed greater light on the reasons behind this phenomenon. However, due to the paucity of such research, there is a severe limitation of methodological insights to inform future research. This article presents the methodological approach of the recent Who I Am study with a particular focus on the effective recruitment strategies that allowed the research team to overcome common barriers to recruitment with this population. The study utilised a cross-sectional survey method and, through the incorporation of an extensive recruitment strategy and comprehensive survey instrument, successfully recruited one of the largest samples of bisexual people to date ( n = 2,651). Sharing methodological successes and challenges in this field will prove valuable in informing much needed future research.

Perspectives on Analytical Treatment Interruptions in People Living with HIV and Their Health Care Providers in the Landscape of HIV Cure-Focused Studies

Analytical treatment interruptions (ATIs) aim to assess effects of HIV cure-focused interventions, but poses potential risks. Understanding of ATI acceptability among people living with HIV (PLHIV) and their HIV health care providers (HHP) is limited. Two international online surveys for PLHIV and HHP assessed understanding and acceptability of monitoring strategies during ATI. Survey items included the following: frequency of CD4, viral load (VL) and clinical assessment, CD4 and VL threshold to restart antiretroviral therapy (ART), acceptability of detectable viremia during ATI, and potential risks of ATI. Responses were collected from July 2017 to January 2018, and a descriptive analysis was performed. Responses to questions asked in both surveys were compared by χ² test. Four hundred forty-two completed the PLHIV survey: 22% identified as female, 39% older than 50 years of age, and 64% identified as gay/homosexual/lesbian. Ninety-five percent were on ART, of which 83% reported an undetectable VL. The preferred frequency of CD4, VL, and clinical monitoring during ATI was monthly. Thirty-five percent of respondents preferred VL to remain undetectable during ATI and would not accept any sustained period of viremia, compared to 18% of 144 HHP (p < .01). Having previously interrupted ART predicted preference for VL to remain undetectable during ATI (odds ratio 0.6, p = .05). Both clinicians and PLHIV were concerned about HIV transmission during ATI. Our work demonstrates that PLHIV expectations of ATI in cure-focused clinical trials do not align with current practices, with PLHIV less accepting of viremia during ATI and preferring less frequent monitoring. Clear education messages and careful consent processes need to be developed in relationship to ATIs in HIV cure research.

Understanding the Prevalence of Smoking Among People Living with HIV (PLHIV) in Australia and Factors Associated with Smoking and Quitting

Understanding contributors to smoking and quitting cigarettes is important to developing effective cessation programs and addressing smoking related morbidity and mortality among people living with HIV (PLHIV). Using data from a large cross-sectional study of Australian PLHIV we provide a smoking prevalence estimate and explore the relationship between socio-demographic variables and smoking status. We also explore the relationship between HIV diagnosis and antiretroviral therapy (ART) initiation and quitting smoking. Of the 1011 respondents included in the analysis, 30.6% were current smokers. The strongest predictor of smoking was regular cannabis use (AOR 6.2, 95% CI 3.6-10.8) while the strongest predictor of being a past smoker was receiving ART (AOR 2.4, 95% CI 1.2-4.7). Quitting also increased around the time of diagnosis and ART initiation, highlighting the potential for these events to be optimal times to address smoking among PLHIV.

The significance and expectations of HIV cure research among people living with HIV in Australia

Most people living with HIV (PLHIV) with reliable access to antiretroviral treatment (ART) have a life expectancy similar to uninfected populations. Despite this, HIV can negatively affect their social and psychological wellbeing. This study aimed to enhance understanding of the expectations PLHIV hold for HIV cure research and the implications this has for HIV cure research trials. We interviewed 20 Australian PLHIV about their expectations for HIV cure research outcomes and the impact a potential cure for HIV may have on their everyday lives. Data were analysed thematically, using both inductive and deductive approaches. The significance of a cure for HIV was expressed by participants as something that would offer relief from their sense of vigilance or uncertainty about their health into the future. A cure was also defined in social terms, as alleviation from worry about potential for onward HIV transmission, concerns for friends and family, and the negative impact of HIV-related stigma. Participants did not consider sustained medication-free viral suppression (or remission) as a cure for HIV because this did not offer certainty in remaining virus free in a way that would alleviate these fears and concerns. A cure was seen as complete elimination of HIV from the body. There is an ethical need to consider the expectations of PLHIV in design of, and recruitment for, HIV cure-related research. The language used to describe HIV cure research should differentiate the long-term aspiration of achieving complete elimination of HIV from the body and possible shorter-term therapeutic advances, such as achieving medication free viral suppression.

Experiences of Bisexual Identity, Attraction, and Behavior and Their Relationship With Mental Health Findings From the Who I Am Study

Approximately one in 10 Australian individuals report bisexual attraction, and this group has repeatedly been found to experience high rates of poor mental health. Despite this finding, our understanding of who is most at risk within this group remains limited. The current article presents findings of an online survey conducted in Australia with one of the largest samples of bisexual adults to date (N = 2,651). Chi-square and regression analyses identified significant associations between the three dimensions of bisexuality (i.e., identity, behavior, and attraction) and mental health. Participants who reported identifying as bisexual were found to be especially vulnerable to poor mental health compared to those who reported bisexual attraction and/or sexual experiences without a bisexual identity. These findings provide a significant contribution to the lacking literature on the complexities of bisexual orientation and mental health. [Journal of Psychosocial Nursing and Mental Health Services, 58(3), 28-37.].

Sex, drugs and social connectedness: wellbeing among HIV-positive gay and bisexual men who use party-and-play drugs

Background This paper explores associations between use of party-and-play drugs, including crystal methamphetamine, and wellbeing among HIV positive gay and bisexual men (GBM) in Australia. This study considers whether use of drugs in a social or sex-based setting facilitates access to social and support networks, which may in turn support wellbeing.

METHODS

A cross-sectional survey of Australian people living with HIV (PLHIV) was conducted. There were 714 participants (79.7%) who identified as GBM. Differences between party-and-play drug users and non-users were examined using bivariate and multinomial logistic regressions. Mediation analysis examined the indirect effect of drug use on wellbeing via social connectedness and support.

RESULTS

One in three participants (29.7%) reported party-and-play drug use within the past 12 months. Only 5% reported regular use. There were no differences between users and non-users on self-reported measures of general health, wellbeing or general social support. Compared with non-users, party-and-play drug users reported higher levels of resilience and lower levels of perceived HIV-related stigma. This was associated with spending more time with other people living with HIV and friends in the gay and lesbian community.

CONCLUSIONS

While party-and-play drug use poses risks to the health of GBM, the social contexts in which these drugs are used may provide wellbeing benefits, particularly for HIV-positive GBM who may be subject to HIV-related stigma in other settings. Further research is needed to determine whether drug-use facilitates access to social networks or if people with more active social ties are more likely to engage in drug use.

Theoretical, Experimental, and Modeling Study of the Reaction of Hydrogen Atoms with 1- and 2-Pentene

Alkyl radicals are prominent in combustion chemistry as they are formed by hydrocarbon decomposition or from a radical attack on hydrocarbons. Accurate determinations of the thermochemistry and kinetics of their unimolecular isomerization and decomposition reactions and related addition reactions of alkenes are therefore important in simulating the combustion chemistry of virtually all hydrocarbon fuels. In this work, a comprehensive potential energy surface (PES) for Ḣ-atom addition to and abstraction from 1- and 2-pentene, and the subsequent C-C and C-H β-scission reactions, and H-atom transfer reactions has been considered. Thermochemical values for the species on the Ċ₅H₁₁ PES were calculated as a function of temperature (298-2000 K), with enthalpies of formation determined using a network of isodesmic reactions. High-pressure limiting and pressure-dependent rate constants were calculated using the Rice-Ramsperger-Kassel-Marcus theory coupled with a one-dimensional master equation. As a validation of our theoretical results, hydrogen atomic resonance absorption spectrometry experiments were performed on the Ḣ-atom addition and abstraction reactions of 1- and 2-pentene. By incorporating our calculations into a detailed chemical kinetic model (AramcoMech 3.0), excellent agreement with these experiments is observed. The theoretical results are further validated via a comprehensive series of simulations of literature data. Our a priori model is found to reproduce important absolute species concentrations and product ratios reported therein.

Stigma, gay men and biomedical prevention: the challenges and opportunities of a rapidly changing HIV prevention landscape

Improvements in biomedical technologies, combined with changing social attitudes to sexual minorities, provide new opportunities for HIV prevention among gay and other men who have sex with men (GMSM). The potential of these new biomedical technologies (biotechnologies) to reduce HIV transmission and the impact of HIV among GMSM will depend, in part, on the degree to which they challenge prejudicial attitudes, practices and stigma directed against gay men and people living with HIV (PLHIV). At the structural level, stigma regarding gay men and HIV can influence the scale-up of new biotechnologies and negatively affect GMSM's access to and use of these technologies. At the personal level, stigma can affect individual gay men's sense of value and confidence as they negotiate serodiscordant relationships or access services. This paper argues that maximising the benefits of new biomedical technologies depends on reducing stigma directed at sexual minorities and people living with HIV and promoting positive social changes towards and within GMSM communities. HIV research, policy and programs will need to invest in: (1) responding to structural and institutional stigma; (2) health promotion and health services that recognise and work to address the impact of stigma on GMSM's incorporation of new HIV prevention biotechnologies; (3) enhanced mobilisation and participation of GMSM and PLHIV in new approaches to HIV prevention; and (4) expanded approaches to research and evaluation in stigma reduction and its relationship with HIV prevention. The HIV response must become bolder in resourcing, designing and evaluating programs that interact with and influence stigma at multiple levels, including structural-level stigma.

Perceptions of HIV cure research among people living with HIV in Australia

Participation in HIV cure-related clinical trials that involve antiretroviral treatment (ART) interruption may pose substantial individual risks for people living with HIV (PLHIV) without any therapeutic benefit. As such, it is important that the views of PLHIV are considered in the design of HIV cure research trials. Examining the lived experience of PLHIV provides unique and valuable perspectives on the risks and benefits of HIV cure research. In this study, we interviewed 20 PLHIV in Australia about their knowledge and attitudes toward clinical HIV cure research and explored their views regarding participation in HIV cure clinical trials, including those that involve ART interruption. Data were analysed thematically, using both inductive and deductive coding techniques, to identity themes related to perceptions of HIV cure research and PLHIV's assessment of the possible risks and benefits of trial participation. Study findings revealed interviewees were willing to consider participation in HIV cure research for social reasons, most notably the opportunity to help others. Concerns raised about ART interruption related to the social and emotional impact of viral rebound, including fear of onward HIV transmission and anxiety about losing control. These findings reveal the ways in which PLHIV perspectives deepen our understanding of HIV cure research, moving beyond a purely clinical assessment of risks and benefits in order to consider the social context.

HIV cure research: print and online media reporting in Australia

OBJECTIVES

While still in its early stages, recent scientific research towards a cure for HIV has generated widespread media interest. The aim of this paper was to explore the ways in which this research has been represented in Australian print and online media and discuss implications of this.

METHODS

A search of databases from four selected media outlets was conducted to identify published articles that directly discussed HIV cure research. Content analysis was used to explore the discursive framing of HIV cure research and identify the presence or absence of people living with HIV in articles.

RESULTS

In total, 95 articles were identified that had been published in print or online between 2007 and 2015. Media reports tended to focus on research breakthroughs or the future potential of HIV cure research, rather than more immediate implications of research findings. While not inaccurate, this focus often implied the field of HIV cure research was more advanced than was generally the case. There was a notable absence of commentary from people living with HIV or community advocates in media reporting.

CONCLUSIONS

Media reporting may generate unrealistic expectations of HIV cure research. This raises ethical concerns that media reporting may inadvertently contribute to therapeutic or curative misconceptions among potential participants in HIV cure-related trials. To address this, scientists, HIV advocates and people living with HIV will need to work collaboratively to engage with reporters and media outlets to provide more consistent input and guidance into reporting about research towards a cure for HIV.

Eradicating hepatitis C: The need for a public health response

Hepatitis C is a global public health issue affecting 150-170 million people worldwide, and over 227,000 Australians with an increasing morbidity resulting from the infection. The Australian Government funded access through the national health scheme to Direct Acting Antiviral (DAA) medication for all people with hepatitis C, regardless of disease staging or mode of transmission to eradicate hepatitis C in Australia. The availability of these drugs not only alters the end result of hepatitis C treatment from that of sustained viral response to cure, but necessitates a refocusing of the public health response to hepatitis C. This project, conducted prior to this funding announcement, interviewed key stakeholders in Australia to investigate the potential impact of DAAs on individuals with hepatitis C and their public health implications. The findings include that while DAAs are revolutionary, there remains essential barriers to their uptake including stigma and discrimination, and a lack of attention to the systematic implementation of the cure.

Ireland's recent contribution to the radiological literature; a bibliometric analysis

The aim of this study was to identify and analyse all articles published by Irish radiology departments in the medical literature since the year 2000. The PubMed database was searched to identify and review all articles published by radiologists based in the Republic of Ireland or Northern Ireland. Citation counts were then obtained and the top ten most cited articles were identified. There were 781 articles published during the study period. Of these, 558 (71%) were published in radiology journals and the remaining 223 (29%) were published in general medical journals. Abdominal radiology was the most represented sub-specialty (33% of all articles). There was a general trend of increased publications per year. Only 75 (9.6%) of articles were collaborative efforts by more than one radiology department. Irish radiology departments have a considerable research output and this has increased since the year 2000. More collaborative research between Irish radiology departments is encouraged.

Effect of fixation time on breast biomarker expression: a controlled study using cell line-derived xenografted (CDX) tumours

AIMS

Altering the length of time specimens are placed in fixative without compromising analytical testing accuracy is a continuous challenge in the anatomical pathology lab. The aim of this study was to determine under controlled conditions the effects of variable fixation time on breast biomarker expression in human breast cancer cell line-derived xenografted (CDX) tumours.

METHODS

CDX tumours using strong oestrogen receptor (ER)-positive, Her2-negative (MCF7) and weak ER-positive, Her2 equivocal (T47D) breast cancer cell lines were fixed for various times ranging from 1 to 336 hours in 10% neutral buffered formalin. CDX tumours were processed according to routine biomarker testing protocols and stained for ER and Her2 immunohistochemistry (IHC) and processed for HER2 fluorescence in situ hybridisation (FISH). The tumours were evaluated using Allred scoring for ER and current ASCO/CAP guidelines for Her2, and by objective cell counting methodology.

RESULTS

No differences were found in expression of ER in either MCF7 or T47D CDX tumours under variable fixation. T47D tumours displayed equivocal Her2 staining when fixed for 24 hours, but fixation for ≤8 hours resulted in consistently negative staining while tumours fixed for >72 hours demonstrated consistent equivocal staining (p<0.01). Cell counting assays revealed only a significant increase in sensitivity in tumours fixed for >72 hours (p<0.01). As expected, FISH results were unaffected by variable fixation.

CONCLUSIONS

Neither shortened nor prolonged fixation affects ER expression, consistent with previous findings. In equivocal Her2-expressing tumours, however, increasing fixation increased the sensitivity of Her2 IHC reporting while not affecting FISH.