Lefebvre's production of space: Implications for nursing

In this paper, we argue that nurses need to be aware of how the production of space in specific contexts - including health care systems and research institutions - perpetuates marginalized populations' state of social otherness. Lefebvre's idea regarding spatial triad is mobilized in this paper, as it pertains to two-spirited, lesbian, gay, bisexual, trans and queer populations (2SLGBTQ*). We believe that nurses can create counter-spaces within health care systems and research institutions that challenge normative discourses. Lefebvre's work provides us the necessary tools to understand how various places or environments produce identities. In understanding Lefebvre's principles, we believe that nurses can play an essential role in creating counter-spaces, thereby instigating counter-institutional practices, for those who experience otherness.

Care of transgender patients by diagnostic radiographers: What can be learnt from the literature

INTRODUCTION

Transgender patients have described negative healthcare experiences, including discrimination and feeling unwelcome. Additionally, these patients are at risk of inadequate or unsafe care due to healthcare providers being unable to obtain and record transgender patients' correct gender and assigned birth sex. This literature review aims to review radiology and radiographer articles published since 2018 about transgender healthcare issues and make recommendations that can be applied by diagnostic radiographers, their managers and diagnostic radiography programme providers.

METHOD

A literature search used multiple databases containing peer-reviewed articles. Boolean operators and key words were utilised. Identified articles were searched to identify any articles not found by searching the databases. Themes and sub-themes from each paper were identified and discussed.

RESULTS

Three key themes were identified: education, systems and environment. Education sub-themes were knowledge and awareness. Systems sub-themes were recording gender correctly and discriminating/stigmatising policies. Environment sub-themes were transgender-friendly symbols and environmental dysphoria.

CONCLUSION

Transgender patients still face barriers to equitable care. Several recommendations were made based on the thematic discussion that could be applied by diagnostic radiographers, student radiographers, radiology managers, University training providers, and professional body organisations. Diagnostic radiography programmes should include training on both clinical topics and cultural competence. Radiology managers should display transgender-positive symbols in their departments and ensure their policies are non-discriminatory and non-stigmatising. Radiology hardware and software providers should provide the ability to record non-binary genders and birth-assigned sex.

IMPLICATIONS FOR PRACTICE

Transgender patients have the right to receive equitable care from diagnostic radiographers during their imaging examination and radiology attendance, and that any risks relating to their transgender status should be correctly managed with appropriate sensitivity.

Disciplined appetites: Reimagining food and nutrition programs for people living with HIV and AIDS

AIMS

Medical nutrition therapy is recommended for people living with HIV/AIDS to improve health and wellness; however, there is a lack of food and nutrition programs for people living with HIV/AIDS in Nova Scotia, Canada. The aim of this study was to explore the beliefs, values, and experiences of people living with HIV/AIDS in relation to food and nutrition programs.

METHODS

A critical social theory lens with two disciplinary contexts: critical health geography and critical dietetics guided this research. Semi-structured interviews were conducted with 12 people living with HIV/AIDS and analysed for themes.

RESULTS

The three main themes were identified: (1) intersections of social determinants of health, wellness, and food security; (2) discursive shaping of food and nutrition in relation to HIV; and (3) the dynamic nature of HIV care.

CONCLUSIONS

Participants offered recommendations on how food and nutrition programs might be reimagined to be more accessible, inclusive, and effective for people living with HIV/AIDS.

Wired Sex Assemblages Among Men Who Have Sex with Men: Sexualized Drug Use, Hookup Apps, and HIV Service Provision

Sexualized drug use is a form of sexual practice that resists risk-based discourses (otherwise referred to as "radical sex practices") and is reportedly common among gay, bisexual and other men who have sex with men (GBMSM). With the growth of online technologies, the use of hookup apps has also increased. We refer to men's use of drugs, apps, and sex form as "wired sex" that forms what post-structuralist theorists Deleuze and Guattari described as an assemblage. Perspectives of the health and social service providers who work directly with GBMSM has not been explored. This research project involved a critical discourse analysis of 13 semi-structured interviews with service providers in Canada to understand their perspectives and interactions with wired sex assemblages. We identified several themes reflecting the social and political effects of wired sex assemblages and discuss the implications of these effects on services provision with GBMSM.

Where do they stand? A post-structuralist examination of offense-supportive narratives constructed by men convicted of child sexual abuse

Decisions to engage in child sexual abuse (CSA) are not motivated solely by sexual/romantic interest in children. Given the complex interplay of personal, relational, and societal factors involved, we explored the narratives men constructed around their subjective motivations for offending, situated within the post-structuralist constructs of desire, power, and ethical subjectivity. Qualitative interviews were conducted with 25 men charged/convicted of CSA. Offenses were often contextualized as attempts to satisfy sexual and/or emotional desires. While some participants reported a persistent interest in children, others attempted to satisfy these desires through CSA in response to negative experiences with adults, including sexual overregulation, sexual objectification, and demoralization. Participants' subversion of social and ethical norms was aided by offense-supportive narratives that stemmed from their interactions with/interpretations of the world. Interventions to prevent CSA may benefit from a post-structuralist perspective of the social and cultural mechanisms by which men's decisions to engage in CSA are shaped.

Summary of an environmental scan of HIV and Hepatitis C programs, projects and initiatives in Saskatchewan

Background

In 2019, the human immunodeficiency virus (HIV) and hepatitis C (HCV) diagnosis rates in Saskatchewan (SK) were approximately twice the national rate. To address these high levels, Saskatchewan Stories, a community-based digital database, was developed to make information on Saskatchewan-based HIV and HCV programs, projects and initiatives (PPI) centrally and freely available. To begin populating this database, we conducted an environmental scan representing HIV and HCV PPI from January 1, 1980 to May 31, 2020.

Methods

MedLine, ERIC, ProQuest One Literature, Public Health Information database, SCOPUS and CINAHL were searched for both HIV and HCV articles. In addition, Bibliography of Native North Americans was searched for HIV and EMBSE (Ovid) and Indigenous studies portal (iPortal) were searched for HCV articles. Google Canada, Government of Saskatchewan, and Government of Canada websites were also searched.

Results

In total, 139 HIV-specific PPI and 29 HCV-specific PPI were found in the environmental scan (n=168). Among HIV PPI, 27% (n=38) were from academic literature while 73% (n=101) were from grey literature. Among HCV PPI, 41% (n=12) were from academic literature, while 59% (n=17) were from grey literature. HIV accounted for 83% of total PPI, compared to 17% for HCV.

Conclusion

This environmental scan is an important contribution to evidence-based practice and research in SK. It is particularly useful for organizations, researchers, policymakers and people living with HIV/HCV to develop new evidence-based PPI, to secure funding for PPI and to support individuals and communities in SK affected by HIV and HCV.

Widening the Circle of Care

Caregiving has various connotations within diverse social and cultural settings. Within First Nations communities, caregiving may be understood as a central practice of reclaiming cultural identity and teachings from colonial systems of healthcare. Our community-based participatory research project explored the experiences, needs, and strengths of caregivers within the Mohawk Nation of Kahnawake in what is currently called Canada. Through a partnership with a local cancer support group and a local hospital, we recruited six caregivers to create digital stories of caring for others living with cancer in the community. We then screened and discussed the significance of the digital stories with community members at a world café event. The resulting themes of caregiving emerged from community responses: (1) gifts and teachings, (2) being there, being present, and (3) circle(s) of care. We discuss these themes and the community’s recommendations for strengthening and sustaining community-based caregiving in Kahnawake.

Polycomb contraction differentially regulates terminal human hematopoietic differentiation programs

Background

Lifelong production of the many types of mature blood cells from less differentiated progenitors is a hierarchically ordered process that spans multiple cell divisions. The nature and timing of the molecular events required to integrate the environmental signals, transcription factor activity, epigenetic modifications, and changes in gene expression involved are thus complex and still poorly understood. To address this gap, we generated comprehensive reference epigenomes of 8 phenotypically defined subsets of normal human cord blood.

Results

We describe a striking contraction of H3K27me3 density in differentiated myelo-erythroid cells that resembles a punctate pattern previously ascribed to pluripotent embryonic stem cells. Phenotypically distinct progenitor cell types display a nearly identical repressive H3K27me3 signature characterized by large organized chromatin K27-modification domains that are retained by mature lymphoid cells but lost in terminally differentiated monocytes and erythroblasts. We demonstrate that inhibition of polycomb group members predicted to control large organized chromatin K27-modification domains influences lymphoid and myeloid fate decisions of primary neonatal hematopoietic progenitors in vitro. We further show that a majority of active enhancers appear in early progenitors, a subset of which are DNA hypermethylated and become hypomethylated and induced during terminal differentiation.

Conclusion

Primitive human hematopoietic cells display a unique repressive H3K27me3 signature that is retained by mature lymphoid cells but is lost in monocytes and erythroblasts. Intervention data implicate that control of this chromatin state change is a requisite part of the process whereby normal human hematopoietic progenitor cells make lymphoid and myeloid fate decisions.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12915-022-01315-1.

Assembling bodies-without-organs: A poststructuralist analysis of group sex between men

Group sex among men who have sex with men may be understood as a 'radical' practice insofar as it transgresses dominant social discourses around appropriate sexual relations-prioritizing heteronormative, monogamous and risk-averse sex. These practices are generally defined as steeped in risk, most commonly due to the potential for transmitting human immunodeficiency virus and sexually transmitted infections and accompanied by the possibility of legal and social repercussions. Our ethnographic research study explored the desires, practices and contexts of group sex participants (n = 10) within a popular group sex party destination located in the United States. We employ a poststructuralist perspective (utilizing the work of Deleuze and Guattari) to understand group sex events with the pretext that bodies have no inherent ethics, meaning or essence: they are 'bodies without organs'. We identify group sex as a form of boundary play, in which participants pursue new limits to what their bodies can do but within a carefully constructed environment that establishes norms of interaction meant to secure trust and safety between participants. A variety of risk reduction practices are shown to be promoted and honoured within these eventful sexual(ized) spaces. The application of poststructuralist concepts of 'boundary play' and 'bodies without organs' helped to depict the construction and navigation of pleasure, safety and risk among group sex participants.

Assemblages of excess and pleasures: The sociosexual uses of online and chemical technologies among men who have sex with men

Chemicals have penetrated everyday lives of men who have sex with men as never before, along with new online and mobile technologies used to seek pleasures and connections. Poststructuralist (including queer) explorations of these new intensities show how bodies exist in the form of (political) surfaces able to connect with other bodies and with other objects where they may find/create a function (e.g., reproduce or disrupt hegemonies). This federally funded netnographic study explored how a variety of chemicals such as recreational drugs, pharmaceuticals and steroids are contributing to the construction of gay, bisexual and other men having sex with men (GBMSM) communities and their interactions with idealized masculinities in the age of increasing technology. Five major thematic categories emerged from our analysis: (1) assembling bodies and technologies, (2) becoming orgiastic, (3) experiencing stigma, (4) becoming machinic and (5) negotiating practices. Our analysis explores how and why GBMSM pursue excesses of pleasure and connection through the assemblages they make with sexualized drug use, online platforms and other men.

What's in a Name? A Phenomenological Exploration of Hypersexuality Narratives

Objective

We explored men's subjective experiences of hypersexuality, including the underlying factors they believed contributed to their sexuality. Methods: We interviewed 32 Canadian men with self-reported concerns related to hypersexuality. Interviews were analyzed using Interpretative Phenomenological Analysis and narrative analysis.

Results

Participants' (hyper)sexual experiences revealed complex histories of desire, life disruptions, and hopes to re-story their sexual lives. Similar (sexual and non-sexual) desires were often attributed to different expressions of hypersexuality.

Conclusion

Assessment and treatment protocols for hypersexuality should account for the social and cultural factors that shape sexuality, and the broader field of desire extending beyond just sexual forms.

P214 Clinical audit of in-patient echocardiography in acute heart failure: real world data from a tertiary hospital

Background

Over the last ten years, an increase in admission rates for acute heart failure (HF) has been noted in England and Wales, with one year mortality rates varying between 30% and 60%. Transthoracic echocardiography (TTE) is recommended within 48 hours of admission for suspected acute heart failure, so to guide treatment accordingly.

Our centre has a specialist team who assesses patients with suspected HF on admission, and refers them for urgent in-patient TTE, using two priority in-patient echo slots per day. Patients are initially referred for HF assessment by general medics and geriatricians, across non-specialist medical wards. We audited the referrals and results of those who received TTE in this context.

Methods and results

We screened the medical notes of 252 patients admitted with suspected HF between January and December 2017, and reviewed the echocardiography results of those who received it during their admission.

50% of these patients were female and 59% were elderly (over 80 years old). 245 of these patients (97.2%) had in-patient echocardiography performed during their hospital stay. The mean wait for echocardiography was 0.58 days, with 92% of the scans being performed within 24 hours. The mean admission duration was 8.6 days (SD 10.9). 17.9% of patients were readmitted with suspected heart failure within six months, 69% of which were elderly.

The majority of this cohort presented with heart failure with preserved ejection fraction (HFpEF), 50%), followed by heart failure with reduced ejection fraction (HFrEF, 29%) and heart failure with mid-range ejection fraction (HFmrEF, 16%). 41% of the patients who received an echocardiogram were in atrial fibrillation, 51% of which were diagnosed with HFpEF.

All patients had their HF medical treatment optimised post-echocardiography and only 18.4% were readmitted within 6 months of the first admission. The majority of these patients was elderly (68.9%). 38.8% of patients who received echocardiography were referred for specialist clinic follow-up, with HFrEF patients more likely to be seen in this setting (42%).

Six-month mortality occurred in 19.8% of patients; cause of death (COD) was undocumented in 25.8% of cases. In those where a post-mortem was conducted, the main COD was HF (16.7%), followed by sepsis (13.6%), cardiac (6.1%) and respiratory arrest (6.1%). 66% of the deceased patients were elderly and 48% presented with HFpEF.

Conclusion

Our cohort is an accurate representation of the current HF statistics seen nationwide. Appropriate treatment was offered to the large majority of patients who received in-patient echocardiography within the first 24 hours of their admission, with low six-month readmission rates. This approach also allowed for the inclusion of these patients on a systematic review plan, including specialist cardiology follow-up. Our numbers are consistent with the higher awareness about HFpEF currently seen in the medical community.

Development of System Performance Indicators for Adolescent and Young Adult Cancer Care and Control in Canada

OBJECTIVES

To develop an expert-group, consensus-based list of system performance indicators to be used for monitoring, evaluating, and benchmarking progress for cancer care and control in adolescents and young adults (AYAs) in Canada.

METHODS

A national multidisciplinary panel of AYA oncology experts was convened; they prepared a literature review and undertook a brainstorming exercise to create a comprehensive list of indicators based on a previously defined framework for AYA cancer care and control in Canada. A modified Delphi process was then undertaken to cull the list based on 3 quick screen criteria. Three rounds of ranking were required. The fourth stage employed a face-to-face meeting, and the final stage utilized a survey to rank the indicators on the basis of importance and feasibility.

RESULTS

Nineteen participants contributed to the 5-stage process. From an initial list of 114 indicators, 14 were ultimately endorsed, representing 5 themes: active care, survivorship, psychosocial issues, palliative care, and research. The 5 highest ranked indicators were assessed as very to moderately feasible, with only a single indicator (clinical trial enrollment) in the top 5 assigned a least feasible ranking.

CONCLUSION

The 14 indicators provide a starting point for the development of a standard set of metrics for AYA cancer care and control in Canada and have potential for international utility.

P796 Feasibility of exercise stress echocardiography and its correlation with angiographically significant coronary disease

Background

European Society of Cardiology (ESC) guidelines on the management of stable coronary artery disease (CAD) advocate stress echocardiography (SE) as a first line assessment for functionally significant ischaemia. Pharmacological stressors such as dobutamine are typically utilised in most UK centres in view of practical benefits when compared with treadmill testing. However, exercise provides the best physiological mimic and enables additional data on haemodynamics and electrocardiogram (ECG) changes to be obtained.

Purpose

To assess the feasibility and safety of exercise stress echocardiography (ESE), and the correlation of positive testing with significant coronary disease and major adverse cardiovascular events.

Methods

A retrospective, single-centre analysis of 500 consecutive patients undergoing ESE for investigation of stable CAD. Cases were excluded when a pharmacological stressor was utilised, or in contexts where ESE was performed for other clinical indications. ESE reports were interrogated for patient demographics, co-morbidities, achievement of target heart rate (HR), procedural sequelae, image quality and findings. Electronic records were reviewed after 24 months to assess results of invasive angiography, when performed, and long-term outcomes including myocardial infarction (MI) and cardiovascular mortality. Concordance between ischaemic territory on ESE and coronary lesions on angiography was also collated.

Results

95% (475/500) of patients were suitable for inclusion. Of these, 83% (394/475) achieved target HR. Sequelae arose in 0.02% (9/475), with the most frequent being ectopy (4 cases). Image quality was adequate in 98% (465/475), with the requirement for contrast agent in the remainder. There were no significant differences in burden of cardiovascular risk factors between the positive and negative ESE groups. 13% (63/475) were positive for inducible ischaemia in one or more myocardial segments. Of these, 71% (45/65) underwent angiography, with 48% (31/65) requiring stenting or bypass surgery. Ischaemic territory on ESE correlated with angiographic lesions in 65% (29/45) of cases. ESE underestimated extent of significant CAD in only 7% (3/45). In the subcohort positive for ESE, 3% (2/63) suffered a MI and cardiovascular mortality was 1.5% (1/63).

Conclusions

ESE is a safe, non-invasive modality for functional testing that reaches diagnostic threshold in the vast majority of cases. It has reasonable concordance in localising ischaemic coronary territory to enable targeted revascularisation.

Situating our selves: using mixed media to convey experiences of psychosocial cancer research

BACKGROUND

In contrast to the field of art therapy, the use of art-making as a form of reflective or creative practice by social scientists by themselves or for themselves has been limited. In this article, we describe the impetus and outcomes for collective art-making within our group of seven health researchers.

METHODS

As a group, we represent sociology, psychology, nursing, occupational therapy, and kinesiology, as well as interdisciplinary studies. Guided by a professional artist, we engaged with mixed media to explore our experiences as psychosocial cancer researchers.

RESULTS

Findings are brought to light through a process and outcome narrative that highlights the meaningfulness of cancer to researchers.

CONCLUSIONS

Key learnings could inform initiatives that other health researchers might undertake if choosing to expand beyond prevalent models of art as intervention for those who are ill to more fully engage those who explore such lines of inquiry.

Exploring Gender-Related Experiences of Cancer Survivors Through Creative Arts: A Scoping Review

Negative health consequences of cancer and its treatments are multifaceted. Research suggests numerous psychosocial benefits may be gained by cancer survivors who engage in arts-based practices. To grasp the breadth of this literature, we undertook a scoping review exploring the intersection between arts-based practices, gender, and cancer. Three databases were searched according to the following criteria: (a) participants older than 18 years, (b) use of arts-based practices, (c) explore cancer survivorship, and (d) gender-based analysis component. A total of 1,109 studies were identified and 11 met inclusion criteria. Themes extracted illustrate four transformative moments related to gender identities postcancer diagnosis: (a) fostering reflection after a cancer diagnosis, (b) constructing new narratives of gender postcancer, (c) navigating gender norms in search of support for new identities, and (d) interrogation of perceived gender norms. Findings demonstrate potential contributions of arts-based practices in shaping cancer-related gender identities. Future research should investigate these experiences across a wider population.

Zebrafish sp7 mutants show tooth cycling independent of attachment, eruption and poor differentiation of teeth

The capacity to fully replace teeth continuously makes zebrafish an attractive model to explore regeneration and tooth development. The requirement of attachment bone for the appearance of replacement teeth has been hypothesized but not yet investigated. The transcription factor sp7 (osterix) is known in mammals to play an important role during odontoblast differentiation and root formation. Here we study tooth replacement in the absence of attachment bone using sp7 zebrafish mutants. We analysed the pattern of tooth replacement at different stages of development and demonstrated that in zebrafish lacking sp7, attachment bone is never present, independent of the stage of tooth development or fish age, yet replacement is not interrupted. Without bone of attachment we observed abnormal orientation of teeth, and abnormal connection of pulp cavities of predecessor and replacement teeth. Mutants lacking sp7 show arrested dentinogenesis, with non-polarization of odontoblasts and only a thin layer of dentin deposited. Osteoclast activity was observed in sp7 mutants; due to the lack of bone of attachment, remodelling was diminished but nevertheless present along the pharyngeal bone. We conclude that tooth replacement is ongoing in the sp7 mutant despite poor differentiation and defective attachment. Without bone of attachment tooth orientation and pulp organization are compromised.

Les bienfaits de l’écriture : étude qualitative portant sur les ateliers communautaires destinés aux survivantes du cancer du sein

Survivre au cancer du sein peut s’avérer difficile vu le peu de soutien communautaire disponible dans ce domaine. En ce sens, l’écriture constitue une intervention psychosociale prometteuse, mais la plupart des études n’ont évalué cette activité que du point de vue individuel. Pour faire contrepoint, notre étude qualitative (n = 12) a analysé l’expérience vécue par des femmes ayant participé à un atelier d’écriture communautaire. L’analyse des entrevues effectuées dans le cadre de l’étude, ainsi que des carnets d’écriture tenus par les participantes et des enregistrements de l’atelier a mis en évidence trois thèmes : a) avoir un endroit rassurant pour se confier; b) se donner le droit de penser à soi et chercher à retrouver son équilibre; c) surmonter ses craintes et combattre l’incertitude. Ces thèmes illustrent les besoins non comblés liés à l’impact émotionnel du cancer du sein, ainsi que le pouvoir de l’écriture en groupe en vue de favoriser le bien-être. Les programmes (communautaires) peuvent pallier aux lacunes présentes dans les soins offerts aux survivants du cancer, en créant des endroits rassurants pour l’expression des émotions, tout en soutenant les participantes dans la rédaction de nouveaux récits axés sur le bien-être et la tenue d’un journal.

Writing toward well-being: A qualitative study of community-based workshops with breast cancer survivors

Transitioning to breast cancer survivorship can be challenging, yet there are few community-based supports. Writing is a promising psychosocial intervention, but most studies have evaluated independent writing. In contrast, our qualitative study (n=12) explored women's experiences in a community-based workshop. The analysis of workshop recordings, journals, and interviews resulted in three themes: (a) Sharing in safe spaces, (b) Seeking permission and balance, and (c) Fear and uncertainty. The themes document unmet needs related to the emotional impact of breast cancer, as well as the potential of community-based writing to enhance well-being. Such programs may address gaps in cancer survivorship care by providing safe spaces for emotional expression, while supporting participants in the crafting of new narratives focused on well-being.

Catalytic formation of C(sp3)–F bonds via decarboxylative fluorination with mechanochemically-prepared Ag2O/TiO2 heterogeneous catalysts

Mechanochemically-prepared, Ag₂O-containing solid materials, are shown to be efficient heterogeneous catalysts for the synthesis of C(sp³)–F bonds via decarboxylative fluorination.

Current assays overestimate 25-hydroxyvitamin D3 and underestimate 25-hydroxyvitamin D2 compared with HPLC: need for assay-specific decision limits and metabolite-specific assays

Background: Clinical demand for quick, cheap, precise and accurate 25-hydroxyvitamin D (25(OH)D) results has led to the development of a variety of assay methods. Lack of standardization of these methods has resulted in intermethod disagreement and challenged whether current assays recognize 25(OH)D2 and 25(OH)D3 equally.

Methods: We studied 172 patient samples from hip fracture cases using DiaSorin (DS) and IDS radioimmunoassays and the Nichols Advantage-automated protein binding assay (NA-CLPBA) in comparison to high-performance liquid chromatography (HPLC). 52 patient samples were analysed before and after three months treatment with 1000 IU of daily ergocalciferol (vitamin D2).

Results: Linear regression analysis in pre-treatment samples demonstrated a positive Y-intercept for each immunoassay compared with HPLC, and a slope that varied from 0.64 (IDS) to 0.97 (DS, NA-CLPBA). Bland Altman analysis demonstrated that all the three assays had a proportional positive bias relative to HPLC at values from 20 to 50 nmol/L. Regression analysis of post-treatment samples demonstrated a slope that was not significantly different from zero for the IDS and NA-CLPBA and 0.2 for the DS method, with a positive intercept for all assays of between 8 and 22, indicating less than 50% of 25(OH)D2 measured by HPLC was detected.

Conclusions: These results demonstrate the need for assay-specific decision limits for 25(OH)D3 in order to define appropriate thresholds for treatment institution. Treatment with vitamin D2 may not be accurately monitored with any of the three commercial assays studied. Clinicians and biochemists who continue to use 25(OH)D assays need to be urgently informed of these issues.

Breeding new forms of life: a critical reflection on extreme variances of bareback sex

Many men who have sex with men (MSM) express feeling marginalized by discourses within public health and sexual health nursing that determine bareback sex is deviant and unsafe. Their resistance to risk-based discourses can be seen within radical sex practices such as deliberately becoming-infected with HIV (bug-chasing) and breeding-infection (gift-giving). The metaphors of bug-chasing and gift-giving, particularly those spread across global online spaces, can influence the sexual experiences and practices of MSM. A metaphor analysis was conducted of Internet forums discussing HIV chasing and gifting metaphors, and showed a variety of discursive meanings, tactics and effects to the radical sex practice. A radical research approach was used to explore the processes of becoming-infected and breeding-infection as determinant steps in the symbolic resistance of risk-based discourses, as well as the creation of new forms of life and community among MSM. Our analyses demonstrate how the gifting/chasing metaphors express MSM's marginalization as well as their lines of flight from having their practices captured within public health discourses. We hope to offer alternative nursing approaches for thinking through and engaging with transgressive and queer sexual practices.

A multidisciplinary guided practical on type I diabetes engaging students in inquiry-based learning

In the present article, we describe a 3-day experimental workshop on type I diabetes aimed at helping high school students to understand how fundamental research on glycemia regulation contributes to the development of scientific knowledge and therapeutic strategies. The workshop engaged students in open-ended investigations and guided experiments. Each class was divided into three or four groups, with each group working with a trained doctoral student or postdoctoral fellow. During an initial questioning phase, students observed slides depicting the glycemia of individuals in various situations. Students identified hyperglycemic individuals relative to the average glycemia of the displayed population. Students were asked to devise a treatment for these diabetics. They quickly realized that they couldn't experiment on patients and understood the need for laboratory models. Each group gave ideas of experiments to perform. We then explained, taking into account their propositions, the protocols students could execute to address one of the following questions: Which criteria must an animal model of diabetes fulfill? How do pancreatic cells maintain glycemia? Is there a way to produce an insulin protein similar to the one released by human pancreatic cells? We used two different evaluation metrics of the workshop: a questionnaire filled out by the students before and after the workshop and a poster produced by students at the end of the workshop. We found that this educational approach successfully improved student awareness and understanding of the scientific reasoning and research process.

Hands-on experiments on glycemia regulation and type 1 diabetes

In the present article, we describe a 3-day experimental workshop on glycemia regulation and type 1 diabetes that engages students in open-ended investigations and guided experiments leading to results that are not already known to them. After an initial questioning phase during which students observe PowerPoint slides depicting the glycemia (blood glucose levels) of individuals in various situations, students design, execute, and interpret experiments to address one of the following questions: 1) Which criteria must an animal model of diabetes fulfill? 2) How do pancreatic cells maintain glycemia constant? and 3) Is there a way to produce an insulin protein similar to the one released by human pancreatic cells? Students then 1) measure glycemia and glycosuria in control mice and in a mouse model of type 1 diabetes (Alloxan-treated mice), 2) measure the release of insulin by pancreatic β-cells (INS-1 cell line) in response to different concentrations of glucose in the extracellular medium, and 3) transfect Chinese hamster ovary cells with a plasmid coding for green fluorescent protein, observe green fluorescent protein fluorescence of some of the transfected Chinese hamster ovary cells under the microscope, and observe the characteristics of human insulin protein and its three-dimensional conformation using RASMOL software. At the end of the experimental session, students make posters and present their work to researchers. Back at school, they may also present their work to their colleagues.

Tricksterdom in narratives of young adult cancer: performances of uncertainty, subversion, and possibility

OBJECTIVE

As people with cancer attempt the difficult task of giving voice to life with illness, they often turn to mythic figures and stories (e.g., when people talk about battling cancer or embarking on a journey toward recovery). Little attention has been paid to the mythic figure of the trickster, recently identified by Arthur Frank (2009) as a prominent trope in some narrative accounts of illness. We investigated the prevalence of 3 tricksterly themes expressed within young adults' stories of cancer: destabilizing social or cosmic order (uncertainty), challenging dominant expectations for human life (subversion), and exploring alternative ways of viewing the world (possibility).

METHOD

We recruited 21 young adults with cancer from across Canada and conducted semistructured interviews. We then analyzed their stories using some elements of thematic, structural, and dialogical/performative narrative analysis-drawing attention to what was told and how/to whom were they told (Crossley, 2000; Frank, 2012; Riessman, 2008).

RESULTS

We describe each of the 3 themes in turn (i.e., uncertainty, subversion, and possibility) using excerpts from 6 interview transcripts, and show how they meaningfully converge into an interpretive framework of tricksterdom.

CONCLUSION

We conclude that the 3 themes of uncertainty, subversion, and possibility seem to come together as tricksterly performances, disrupting audiences' expectations of more typical forms of cancer narratives and calling attention to less familiar, structured, and "tellable" ways of narrating illness.

Lymphangiogenesis in abdominal aortic aneurysm

Background

Ongoing angiogenesis is implicated in the inflammatory environment that characterizes abdominal aortic aneurysm (AAA). Although lymphangiogenesis has been associated with chronic inflammatory conditions, it has yet to be demonstrated in AAA. The aim was to determine the presence of lymphangiogenesis and to delineate the relationship between inflammation and neovascularization in AAA tissue.

Methods

AAA samples and preoperative computed tomography images were obtained from patients undergoing elective AAA repair. Control samples were age-matched abdominal aortic tissue. Specific immunostains for blood vessels (CD31, CD105), lymphatic vessels (D2-40), vascular endothelial growth factor (VEGF) A and VEGF receptor (VEGFR) 3 allowed characterization and quantitation of vasculature.

Results

The AAA wall contained high levels of inflammatory infiltrate; microvascular densities of blood (P < 0·001) and lymphatic (P = 0·003) vessels were significantly increased in AAA samples compared with controls. Maximal AAA vascularity was observed in inflammatory areas, with vessels that stained positively for CD31 (ρ = 0·625, P = 0·017), CD105 (ρ = 0·692, P = 0·009) and D2-40 (ρ = 0·675, P = 0·008) correlating positively with the extent of inflammation. Increased VEGFR-3 and VEGF-A expression was also evident within inflammatory AAA areas.

Conclusion

These findings demonstrated lymphatic vessel involvement in end-stage AAA disease, which was associated with the degree of inflammation, and confirmed the involvement of neovascularization.

Timing of developmental sequences in different brain structures: physiological and pathological implications

The developing brain is not a small adult brain. Voltage- and transmitter-gated currents, like network-driven patterns, follow a developmental sequence. Studies initially performed in cortical structures and subsequently in subcortical structures have unravelled a developmental sequence of events in which intrinsic voltage-gated calcium currents are followed by nonsynaptic calcium plateaux and synapse-driven giant depolarising potentials, orchestrated by depolarizing actions of GABA and long-lasting NMDA receptor-mediated currents. The function of these early patterns is to enable heterogeneous neurons to fire and wire together rather than to code specific modalities. However, at some stage, behaviourally relevant activities must replace these immature patterns, implying the presence of programmed stop signals. Here, we show that the developing striatum follows a developmental sequence in which immature patterns are silenced precisely when the pup starts locomotion. This is mediated by a loss of the long-lasting NMDA-NR2C/D receptor-mediated current and the expression of a voltage-gated K(+) current. At the same time, the descending inputs to the spinal cord become fully functional, accompanying a GABA/glycine polarity shift and ending the expression of developmental patterns. Therefore, although the timetable of development differs in different brain structures, the g sequence is quite similar, relying first on nonsynaptic events and then on synaptic oscillations that entrain large neuronal populations. In keeping with the 'neuroarcheology' theory, genetic mutations or environmental insults that perturb these developmental sequences constitute early signatures of developmental disorders. Birth dating developmental disorders thus provides important indicators of the event that triggers the pathological cascade leading ultimately to disease.