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Background. Change agents’ actions have been studied mainly from a theoretical perspective. Purpose. This study aimed to empirically identify occupational therapists’ actual change agent actions. Method. As part of a research partnership with the Canadian Association of Occupational Therapists-Québec chapter, we conducted this cross-sectional pilot study using an online survey. Findings. The change agent practices of our 103 participants involve many types of actions but show underinvestment in mass communication. Mass communication actions are more frequent when participants have greater experience, additional academic degrees, and training in change agency. Also, occupational therapists with additional academic degrees and change agency training tend to use a wider variety of actions. Finally, our participants’ actions principally target actors in the clinical context, rarely political actors. Implications. Our results suggest that occupational therapists can and will invest in the full range of change agent actions provided they can acquire the necessary knowledge and skills.

Background First-line health care providers are the primary access point for workers' benefits. However, little is known about their impact on quality of care and return-to-work. Our objective was to critically compare literature on the practices of first-line providers for workers with musculoskeletal injuries in Ontario and Quebec (Canada), Washington State (United States), and Victoria (Australia). Methods A critical interpretive synthesis of peer-reviewed scientific literature was conducted. The search across six databases yielded 59 relevant publications that were critically appraised. Results Three themes emerged: 1) how policies about first-line health care providers' modulate worker access to care, 2) how these providers' roles, practices, and training shape disability management, and 3) how the quality of care and disability outcomes are evaluated. Conclusions First-line health care providers have a critical influence on workers' trajectories of care. A focus on their role while taking the complexity of the context into account will help orient future policy changes.

Objectives Pain assessment is enigmatic. Although clinicians and researchers must rely upon observations to evaluate pain, the personal experience of pain is fundamentally unobservable. This raises the question of how the inherent subjectivity of pain can and should be integrated within assessment. Current models fail to tackle key facets of this problem, such as what essential aspects of pain are overlooked when we only rely on numeric forms of assessment, and what types of assessment need to be prioritized to ensure alignment with our conceptualization of pain as a subjective experience. We present the multimodal assessment model of pain (MAP) as offering practical frameworks for navigating these challenges. Methods This is a narrative review. Results MAP delineates qualitative (words, behaviors) and quantitative (self-reported measures, non-self-reported measures) assessment and regards the qualitative pain narrative as the best available root proxy for inferring pain in others. MAP offers frameworks to better address pain subjectivity by: (1) delineating separate criteria for identifying versus assessing pain. Pain is identified through narrative reports, while comprehensive assessment is used to infer why pain is reported; (2) integrating compassion-based and mechanism-based management by both validating pain reports and assessing underlying processes; (3) conceptualizing comprehensive pain assessment as both multidimensional and multimodal (listening/observing and measuring); and (4) describing how qualitative data help validate and contextualize quantitative pain measures. Discussion MAP is expected to help clinicians validate pain reports as important and legitimate, regardless of other findings, and help our field develop more comprehensive, valid, and compassionate approaches to assessing pain.

Background As social change agents (SCAs), occupational therapists (OTs) are expected to defend the rights of their clients, advocate for and with them, and try to influence organizational and political decision-makers. However, OTs do not generally feel equipped to take effective action. The overall goal of this research partnership is to support practising OTs in acquiring the knowledge and skills required to act as SCAs through a specific SCA training program and a toolkit that summarizes the key training points. Methods The study will include three iterative phases (conceptualization, implementation and evaluation) and use a participatory process. The design of the training program and toolkit will draw on the expertise of the researchers (theoretical knowledge), a professional provincial partner and study participants (experiential knowledge). To evaluate the training program and toolkit, a self-administered evaluation questionnaire, facilitator observation grid and semi-structured guide designed to facilitate focus group discussions will be used. The quantitative and qualitative data will be analyzed using descriptive statistics and thematic analysis, respectively. The results of the initial implementation and evaluation phases will inform improvement of the training program and toolkit before starting the cycle with the following groups. Discussion In addition to training about 100 OTs, this study will produce three main benefits: 1) development of two products, namely the SCA training program and toolkit, that are easy to reuse and potentially transferable to other professionals; 2) ownership of these products by the partner through its close involvement in all stages of the study; and 3) development of a sustainable partnership between a team of researchers and a recognized organization with networks across Canada and internationally. These three spin-offs will provide a solid basis for an increasing number of permanent implementation initiatives, in Québec and elsewhere in Canada, not just in occupational therapy but also in other professions.

Background In recent years, significant efforts have been made to improve the provision of care for compensated injured workers internationally. However, despite increasing efforts at implementing best practices in this field, some studies show that policies overseeing the organisation of care for injured workers can have perverse influences on healthcare providers’ practices and can prevent workers from receiving the best care possible. The influence of these policies on physiotherapists’ practices has yet to be investigated. Our objectives were thus to explore the influence of 1) workers’ compensation boards’ and 2) physiotherapy clinics’ policies on the care physiotherapists provide to workers with musculoskeletal injuries in three large Canadian provinces. Methods The Interpretive Description framework, a qualitative methodological approach, guided this inquiry. Forty participants (30 physiotherapists and 10 leaders and administrators from physiotherapy professional groups and workers’ compensation boards) were recruited in British Columbia, Ontario and Quebec to participate in an in-depth interview. Inductive analysis was conducted using constant comparative techniques. Results Narratives from participants show that policies of workers’ compensation boards and individual physiotherapy clinics have significant impacts on physiotherapists’ clinical practices. Policies found at both levels often place physiotherapists in uncomfortable positions where they cannot always do what they believe to be best for their patients. Because of these policies, treatments provided to compensated injured workers markedly differ from those provided to other patients receiving physiotherapy care at the same clinic. Workers’ compensation board policies such as reimbursement rates, end points for treatment and communication mechanisms, and clinic policies such as physiotherapists’ remuneration schemes and restrictions on the choice of professionals had negative influences on care. Policies that were viewed as positive were board policies that recognize, promote and support physiotherapists’ duties and clinics that provide organisational support for administrative tasks. Conclusion In Canada, workers’ compensation play a significant role in financing physiotherapy care for people injured at work. Despite the best intentions in promoting evidence-based guidelines and procedures regarding rehabilitation care for injured workers, complex policy factors currently limit the application of these recommendations in practice. Research that targets these policies could contribute to significant changes in clinical settings. Electronic supplementary material The online version of this article (10.1186/s12913-018-3491-1) contains supplementary material, which is available to authorized users.

International audience; Estrogen biosynthesis during pregnancy is dependent on the collaboration between the fetus producing the androgen precursors, and the placenta expressing the enzyme aromatase (CYP19). Disruption of estrogen production by contaminants may result in serious pregnancy outcomes. We used our recently developed in vitro co-culture model of fetoplacental steroidogenesis to screen the effects of three neonicotinoid insecticides on the catalytic activity of aromatase and the production of steroid hormones. A co-culture of H295R human adrenocortical carcinoma cells with fetal characteristics and BeWo human choriocarcinoma cells which display characteristics of the villous cytotrophoblast was exposed for 24h to various concentrations of three neonicotinoids: thiacloprid, thiamethoxam and imidacloprid. Aromatase catalytic activity was determined in both cell lines using the tritiated water-release assay. Hormone production was measured by ELISA. The three neonicotinoids induced aromatase activity in our fetoplacental co-culture and concordingly, estradiol and estrone production were increased. In contrast, estriol production was strongly inhibited by the neonicotinoids. All three pesticides induced the expression of CYP3A7 in H295R cells, and this induction was reversed by co-treatment of H295R cells with exogenous estriol. CYP3A7 is normally expressed in fetal liver and is a key enzyme involved in estriol synthesis. We suggest that neonicotinoids are metabolized by CYP3A7, thus impeding the 16α-hydroxylation of fetal DHEA(-sulfate), which is normally converted to estriol by placental aromatase. We successfully used the fetoplacental co-culture as a physiologically relevant tool to highlight the potential effects of neonicotinoids on estrogen production, aromatase activity and CYP3A7 expression during pregnancy.

International audience; We have reviewed the scientific literature related to four diseases in which to serotonin (5-HT) is involved in the etiology, herein named 5-HT-linked diseases, and whose prevalence is influenced by estrogenic status: depression, migraine, irritable bowel syndrome and eating disorders. These diseases all have in common a sex-dimorphic prevalence, with women more frequently affected than men. The co-occurrence between these 5-HT-linked diseases suggests that they have common physiopathological mechanisms. In most 5-HT-linked diseases (except for anorexia nervosa and irritable bowel syndrome), a decrease in the serotonergic tone is observed and estrogens are thought to contribute to the improvement of symptoms by stimulating the serotonergic system. Human pregnancy is characterized by a unique 5-HT and estrogen synthesis by the placenta. Pregnancy-specific disorders, such as hyperemesis gravidarum, gestational diabetes mellitus and pre-eclampsia, are associated with a hyperserotonergic state and decreased estrogen levels. Fetal programming of 5-HT-linked diseases is a complex phenomenon that involves notably fetal-sex differences, which suggest the implication of sex steroids. From a mechanistic point of view, we hypothesize that estrogens regulate the serotonergic system, resulting in a protective effect against 5-HT-linked diseases, but that, in turn, 5-HT affects estrogen synthesis in an attempt to retrieve homeostasis. These two processes (5-HT and estrogen biosynthesis) are crucial for successful pregnancy outcomes, and thus, a disruption of this 5-HT-estrogen relationship may explain pregnancy-specific pathologies or pregnancy complications associated with 5-HT-linked diseases.

Background: Autonomy is a central concept in both bioethics and rehabilitation. Bioethics has emphasized autonomy as self-governance and its application in treatment decision-making. In addition to discussing decisional autonomy, rehabilitation also focuses on autonomy as functional independence. In practice, responding to patients with diminished autonomy is an important component of rehabilitation care, but also gives rise to tensions and challenges. Our objective was to better understand the complex and distinctive ways that autonomy is understood and upheld in the context of rehabilitation care by reviewing how autonomy is discussed in the rehabilitation literature. Methods: We conducted a scoping review addressing issues of autonomy in the context of mental and physical rehabilitation. Our process followed three sequential steps. We extracted and analyzed bibliometric information. We then examined how autonomy was defined and conceptualized. Finally, we examined how the articles discussed the roles of rehabilitation health professionals in responding to patient autonomy. Findings: The articles include 16 empirical reports, 17 case studies and 30 theoretical papers. The most common conceptual accounts of autonomy drew upon principlism, rights-based and legal analyses, and relational/social approaches. We identified four broad approaches for responding to patient autonomy: supporting, promoting, respecting and advocating. Conclusion: This review helps clarify some of the ambiguities and conceptual distinctions underlying discussions and practices related to autonomy in rehabilitation. It also draws attention to a wide range of activities that health professionals can undertake with the goal of supporting, promoting, respecting and advocating for patient autonomy in rehabilitation care., Contexte: L’autonomie est un concept central tant en bioéthique qu’en réadaptation. La bioéthique a mis l’accent sur l’autonomie en tant qu’auto-gouvernance et sur son application dans la prise de décision en matière de traitement. En plus de discuter de l’autonomie décisionnelle, la réadaptation met aussi l’accent sur l’autonomie en tant qu’indépendance fonctionnelle. Dans la pratique, la prise en charge des patients en perte d’autonomie est une composante importante des soins de réadaptation, mais elle engendre aussi des tensions et des défis. Notre objectif était de mieux comprendre les façons complexes et distinctes dont l’autonomie est comprise et maintenue dans le contexte des soins de réadaptation en examinant comment l’autonomie est abordée dans la littérature sur la réadaptation. Méthodes: Nous avons effectué une étude de la portée des questions d’autonomie dans le contexte de la réadaptation mentale et physique. Notre processus s’est déroulé en trois étapes séquentielles. Nous avons extrait et analysé des informations bibliométriques. Nous avons ensuite examiné comment l’autonomie était définie et conceptualisée. Enfin, nous avons examiné la façon dont les articles traitaient du rôle des professionnels de la santé en réadaptation dans l’autonomie des patients. Résultats: Les articles comprennent 16 rapports empiriques, 17 études de cas et 30 articles théoriques. Les récits conceptuels les plus courants sur l’autonomie s’appuyaient sur le principisme, les analyses fondées sur les droits et les analyses juridiques et les approches relationnelles/sociales. Nous avons identifié quatre grandes approches pour répondre à l’autonomie du patient : le soutien, la promotion, le respect et la promotion. Conclusion: Cet examen aide à clarifier certaines des ambigüités et des distinctions conceptuelles qui sous-tendent les discussions et les pratiques liées à l’autonomie en réadaptation. Il attire également l’attention sur un large éventail d’activités que les professionnels de la santé peuvent entreprendre dans le but de soutenir, de promouvoir, de respecter et de promouvoir l’autonomie des patients dans les soins de réadaptation.

In the context of long waiting time to access rehabilitation services, a large majority of settings use referral prioritization to help manage waiting lists. Prioritization practices vary greatly between settings and there is little consensus on how best to prioritize referrals. This paper describes the prioritization processes for physiotherapy services in Québec and its potential implications in terms of equity in access to services. This is a secondary analysis of a survey of outpatient physiotherapy departments (n=98; proportion of participation was 99%) conducted in 2015 across publicly funded hospitals in Québec. In many settings, persons with acute orthopaedic conditions were prioritized while chronic conditions were given a lower priority. There were 72 different combinations of prioritization criteria used in outpatient physiotherapy departments. Variability was also observed in the type of personnel involved in the prioritization process, the number of priority levels used to rank the referrals and the source of information used to prioritize referrals. These results highlight potential issues regarding equity in access to physiotherapy services: the prioritization of persons with acute conditions to the detriment of those with chronic conditions, the lack of consensus on a fair prioritization process and the importance to adequately assess patients’ needs for treatment. Further research and interventions on prioritization criteria and processes are needed to ensure equitable access to physiotherapy services, especially in the public sector., Dans le contexte actuel de longs délais d’attente pour accéder aux services de réadaptation, la grande majorité des établissements utilisent la priorisation des demandes de référence pour aider à gérer les listes d’attente. Les pratiques de priorisation varient grandement d’un milieu à l’autre et il y a peu de consensus sur la meilleure façon de prioriser les demandes de référence. Cet article décrit les processus de priorisation de services en physiothérapie au Québec et leurs implications potentielles en termes d’équité dans l’accès aux services. Il s’agit d’une analyse secondaire d’une enquête menée en 2015 auprès des cliniques externes en physiothérapie (n=98; la proportion de participation était de 99 %) dans les hôpitaux publics du Québec. Dans de nombreux milieux, les personnes ayant une condition orthopédique aigüe étaient priorisées, tandis que les conditions chroniques recevaient une priorité moindre. Nous avons comptabilisé 72 combinaisons différentes de critères de priorisation utilisées dans les cliniques externes de physiothérapie. Nous avons également observé une variabilité dans le type de personnel impliqué dans le processus de priorisation, le nombre de niveaux de priorité utilisés pour classer les demandes de référence et la source d’information utilisée pour établir la priorisation. Ces résultats mettent en lumière des enjeux potentiels concernant l’équité dans l’accès aux services de physiothérapie : la priorisation des personnes atteintes de conditions aigües au détriment de celles atteintes de conditions chroniques, l’absence de consensus sur un processus de priorisation équitable et la nécessité d’évaluer adéquatement les besoins de traitement des patients. De futures recherches et interventions sur les critères et les processus de priorisation sont nécessaires pour assurer un accès équitable aux services de physiothérapie, en particulier dans le secteur public.

Health care services provided by workers’ compensation systems aim to facilitate recovery for injured workers. However, some features of these systems pose barriers to high quality care and challenge health care professionals in their everyday work. We used interpretive description methodology to explore ethical tensions experienced by physical therapists caring for patients with musculoskeletal injuries compensated by Workers’ Compensation Boards. We conducted in-depth interviews with 40 physical therapists and leaders in the physical therapy and workers’ compensation fields from three Canadian provinces and analyzed transcripts using concurrent and constant comparative techniques. Through our analysis, we developed inductive themes reflecting significant challenges experienced by participants in upholding three core professional values: equity, competence, and autonomy. These challenges illustrate multiple facets of physical therapists’ struggles to uphold moral commitments and preserve their sense of professional integrity while providing care to injured workers within a complex health service system.

International audience; Estrogen production by the human villous trophoblast is dependent on the biosynthetic enzyme aromatase (CYP19; CYP19A1) and is crucial for successful placental development and pregnancy outcome. Using villous cytotrophoblast cells (vCTs) freshly isolated from normal term placenta, we characterized the promoter-specific expression of CYP19A1 mRNA (derived from promoters I.1, I.4, I.8 or total transcript) and aromatase activity during villous trophoblast syncytialization. CYP19A1 mRNA levels and aromatase activity in vCTs reached a maximum after about 48 h of culture. The cAMP inducer forskolin (10 μM) and protein kinase C stimulant phorbol myristate acetate (1 μM) increased CYP19A1 mRNA levels by 1.8- and 1.6-fold, respectively, as well as inducing aromatase catalytic activity. Dexamethasone (100 nM) and vascular endothelial growth factor (5 ng/mL) decreased CYP19A1 mRNA levels, while having no effect on aromatase activity. Our results emphasize the importance of not solely studying CYP19A1 regulation and function at the mRNA level but also considering posttranslational mechanisms that alter the final catalytic activity of aromatase.

Ethics education is the cornerstone of professional practice, fostering knowledge and respect for core ethical values among healthcare professionals. Ethics is also a subject well-suited for interprofessional education and collaboration. However, there are few initiatives to gather experiences and share resources among ethics educators in rehabilitation. We thus undertook a knowledge exchange project to 1) share knowledge about ethics training across Canadian occupational and physical therapy programs, and 2) build a community of educators dedicated to improving ethics education. The objectives of this paper are to describe this interprofessional knowledge exchange project involving ethics educators (with a diversity of professional and disciplinary backgrounds) from Canadian occupational and physical therapy programs as well as analyze its outcomes based on participants’ experiences/perceptions. Two knowledge exchange strategies were employed: an interactive one-day workshop and a wiki platform. An immediate post-workshop questionnaire evaluated the degree to which participants’ expectations were met. Structured telephone interviews nine to ten months after the workshop collected participants’ perceptions on whether (and if so, how) the project influenced their teaching or led to further interprofessional collaborations. Open-ended questions from the post-workshop questionnaires and individual interviews were analyzed using qualitative methods. Of 40 ethics educators contacted, 23 participated in the workshop and 17 in the follow-up interview. Only 6 participants logged into the wiki from its launch to the end of data collection. Five themes emerged from the qualitative analysis: 1) belonging and networking; 2) sharing and collaborating; 3) changing (or not) ways of teaching ethics; 4) sustaining the network; and 5) envisioning the future of ethics education. The project attained many of its goals, despite encountering some challenges. While the wiki platform proved to be of limited benefit in advancing the project goals, the interactive format and collaborative nature of the one-day workshop were described as rewarding and effective in bringing together occupational therapy and physical therapy educators to meet, network, and share knowledge.

Estrogens are produced in large amounts during pregnancy, as a result of a tightly regulated cooperation between the maternal and fetal adrenal cortex, which produce androgen precursors, and the placental villous trophoblast, which transforms these precursors into estrogens. These estrogens play an important role in proper placental function, in adaptation of the mother to pregnancy, as well as in adequate fetal development. Disruption of estrogen production is associated with poor pregnancy outcomes and fetal malformation or altered fetal programming. Pregnant women may be exposed to endocrine disruptors from environmental sources or medications, and it is crucial to study the effects of such compounds on feto-placental steroidogenesis. The H295R/BeWo co-culture model offers the opportunity to study these interactions, by making it possible to evaluate the effects of chemical exposures on androgen and estrogen biosynthesis, as well as on various other aspects of feto-placental communication.

In vitro functional analyses of cells are widely used to investigate the molecular mechanisms involved in preeclampsia. Common cellular functions studied include adhesion, apoptosis, proliferation, migration, and invasion. At present, most researchers will use endpoint experimental assays that only allow the determination of cell function at a single time point, with the need to repeat the experiment for an alternate time point. Here, we describe an electrical impedance-based tool that allows real-time monitoring of cells, which enables the efficient assessment of multiple time points over the duration of a single experiment.

Serotonin reuptake inhibitors (SRIs) are currently the main molecules prescribed to pregnant women that suffer from depression. Placental cells are exposed to SRIs via maternal blood, and we have previously shown that SRIs alter feto-placental steroidogenesis in an in vitro co-culture model. More specifically, serotonin (5-HT) regulates the estrogen biosynthetic enzyme aromatase (cytochrome P450 19; CYP19), which is disrupted by fluoxetine and its active metabolite norfluoxetine in BeWo choriocarcinoma cells. Based on molecular simulations, the present study illustrates that the SRIs fluoxetine, norfluoxetine, paroxetine, sertraline, citalopram and venlafaxine exhibit binding affinity for the active-site pocket of CYP19, suggesting potential competitive inhibition. Using BeWo cells and primary villous trophoblast cells isolated from normal term placentas, we compared the effects of the SRIs on CYP19 activity. We observed that paroxetine and sertraline induce aromatase activity in BeWo cells, while venlafaxine, fluoxetine, paroxetine and sertraline decrease aromatase activity in primary villous trophoblast. The effects of the paroxetine and sertraline in primary villous trophoblasts were observed at the lower doses tested. We also showed that 5-HT and the 5-HT(2A) receptor agonist 2,5-dimethoxy-4-iodoamphetamine (DOI) induced CYP19 activity. An increase in phosphorylation of serine and tyrosine and a decrease in threonine phosphorylation of CYP19 was also associated with DOI treatment. Our results contribute to better understanding how 5-HT and SRIs interact with CYP19 and may affect estrogen production. Moreover, this study suggests that alteration of placental 5-HT levels due to depression and/or SRI treatment during pregnancy may be associated with disruption of placental estrogen production.

Asthma is a complex trait, often associated with atopy. The genetic contribution has been evidenced by familial occurrence. Genome-wide association studies allowed for associating numerous genes with asthma, as well as identifying new loci that have a minor contribution to its phenotype. Considering the role of environmental exposure on asthma development, an increasing amount of literature has been published on epigenetic modifications associated with this pathology and especially on DNA methylation, in an attempt to better understand its missing heritability. These studies have been conducted in different tissues, but mainly in blood or its peripheral mononuclear cells. However, there is growing evidence that epigenetic changes that occur in one cell type cannot be directly translated into another one. In this review, we compare alterations in DNA methylation from different cells of the immune system and of the respiratory tract. The cell types in which data are obtained influences the global status of alteration of DNA methylation in asthmatic individuals compared to control (an increased or a decreased DNA methylation). Given that several genes were cell-type-specific, there is a great need for comparative studies on DNA methylation from different cells, but from the same individuals in order to better understand the role of epigenetics in asthma pathophysiology.

International audience; The effects of fluoxetine, one of the most prescribed selective serotonin-reuptake inhibitors (SSRIs) during pregnancy, and its active metabolite norfluoxetine were studied on placental aromatase (CYP19) and feto-placental steroidogenesis. Fluoxetine did not alter estrogen secretion in co-culture of fetal-like adrenocortical (H295R) and trophoblast-like (BeWo) cells used as a model of the feto-placental unit, although it induced CYP19 activity, apparently mediated by the serotonin (5-HT)2A receptor/PKC signaling pathway. Norfluoxetine decreased estrogen secretion in the feto-placental co-culture and competitively inhibited catalytic CYP19 activity in BeWo cells. Decreased serotonin transporter (SERT) activity in the co-culture was comparable to 17β-estradiol treatment of BeWo cells. This work shows that the complex interaction of fluoxetine and norfluoxetine with placental estrogen production, involves 5-HT-dependent and -independent mechanisms. Considering the crucial role of estrogens during pregnancy, our results raise concern about the impact of SSRI treatment on placental function and fetal health.

Ethical practice is an essential competency for occupational and physical therapists. However, rehabilitation educators have few points of reference for choosing appropriate pedagogical and evaluation methods related to ethics. The objectives of this study were to: (1) identify priority content to cover in ethics teaching in occupational therapy (OT) and physical therapy (PT) programmes and (2) explore useful and innovative teaching and evaluation methods.Data for this qualitative descriptive study were collected during a 1-d knowledge exchange workshop focused on ethics teaching in rehabilitation.Twenty-three educators from 11 OT and 11 PT Canadian programmes participated in the workshop. They highlighted the importance of teaching foundational theoretical/philosophical approaches and grounding this teaching in concrete examples drawn from rehabilitation practice. A wide range of teaching methods was identified, such as videos, blogs, game-based simulations and role-play. For evaluation, participants used written assignments, exams, objective structured clinical examinations and reflective journals. The inclusion of opportunities for student self-evaluation was viewed as important.The CREW Day provided ethics educators the opportunity to share knowledge and begin creating a community of practice. This space for dialogue could be expanded to international rehabilitation ethics educators, to facilitate a broader network for sharing of tacit and experiential knowledge. Implications for Rehabilitation According to the study participants, rehabilitation ethics education should include learning about foundational knowledge related to ethical theory; be grounded in examples and cases drawn from clinical rehabilitation practice; and contribute to building professional competencies such as self-knowledge and critical thinking in students. Regardless of the methods used by occupational therapy (OT) and physical therapy (PT) educators for teaching and evaluation, the value of creating spaces that support open discussion for students (e.g. protected discussion time in class, peer-discussions with the help of a facilitator, use of a web discussion forum) was consistently identified as an important facet. Educators from OT and PT programmes should work with various professionals involved in OT and PT student training across the curricula (e.g. clinical preceptors, other educators) to extend discussions of how ethics can be better integrated into the curriculum outside of sessions specifically focused on ethics. The CREW Day workshop was the first opportunity for Canadian rehabilitation ethics educators to meet and discuss their approaches to teaching and evaluating ethics for OT and PT students. Including international rehabilitation ethics educators in this dialogue could positively expand on this initial dialogue by facilitating the sharing of tacit and experiential knowledge amongst a larger and more diverse group of ethics educators.

Background: Experimental tools for studying the complex steroidogenic interactions that occur between placenta and fetus during human pregnancy are extremely limited. Objectives: We aimed to develop a co-culture model to study steroidogenesis by the human fetoplacental unit and its disruption by exposure to environmental contaminants. Methods: We cultured BeWo human choriocarcinoma cells, representing the villous cytotrophoblast, and H295R human adrenocortical carcinoma cells, representing the fetal unit, in a carefully adapted co-culture medium. We placed H295R cells in 24-well plates and BeWo cells on transwell inserts with or without pesticide treatment (atrazine or prochloraz) and assessed CYP19 activity and hormonal production after 24 hr of co-culture. Results: The co-culture exhibited the steroidogenic profile of the fetoplacental unit, allowing a synergistic production of estradiol and estriol (but not of estrone) of 133.3 ± 11.3 pg/mL and 440.8 ± 44.0 pg/mL, respectively. Atrazine and prochloraz had cell-type specific effects on CYP19 activity and estrogen production in co-culture. Atrazine induced CYP19 activity and estrogen production in H295R cells only, but did not affect overall estrogen production in co-culture, whereas prochloraz inhibited CYP19 activity exclusively in BeWo cells and reduced estrogen production in co-culture by almost 90%. In contrast, prochloraz did not affect estradiol or estrone production in BeWo cells in monoculture. These differential effects underline the relevance of our co-culture approach to model fetoplacental steroidogenesis. Conclusions: The co-culture of H295R and BeWo cells creates a unique in vitro model to reproduce the steroidogenic cooperation between fetus and placenta during pregnancy and can be used to study the endocrine-disrupting effects of environmental chemicals. Citation: Hudon Thibeault AA, Deroy K, Vaillancourt C, Sanderson JT. 2014. A unique co-culture model for fundamental and applied studies of human fetoplacental steroidogenesis and interference by environmental chemicals. Environ Health Perspect 122:371–377; http://dx.doi.org/10.1289/ehp.1307518