Inequities in access to palliative and end-of-life care in the black population in Canada: a scoping review.

BACKGROUND: Improving equity and early access to palliative care for underserved populations in Canada is a priority. Little is known regarding access to palliative and end-of-life care in the Black population. METHODS: We undertook a scoping review using the framework by Arksey and O'Malley to identify knowledge, access gaps, and experiences of palliative and end-of-life care among Blacks living with life-limiting illnesses in Canada. Primary studies, discussion papers, books, and reports were considered eligible. We followed a comprehensive search strategy developed by an information scientist. Searches were performed in the following bibliographic databases: Medline, EMBASE, PsycINFO via OVID, CINAHL via EBSCOhost, Scopus and Cochrane Library via Wiley. The search strategy was derived from three main concepts: (1) Black people; (2) Canada and Canadian provinces; (3) Palliative, hospice, or end-of-life care. No publication date or language limits were applied. Titles and abstracts were screened for eligibility by one reviewer and full text by two independent reviewers. RESULTS: The search yielded 233 articles. Nineteen articles were selected for full-text review, and 7 articles met the inclusion criteria. These studies were published between 2010 and 2021, and conducted in the provinces of Ontario and Nova Scotia only. Studies used both quantitative and qualitative methods and included cancer decedents, next of kin, family caregivers and religious leaders. Sample sizes in various studies ranged from 6 - 2,606 participants. Included studies reported a general lack of understanding about palliative and end-of-life care, positive and negative experiences, and limited access to palliative and end-of-life care for Blacks, across all care settings. CONCLUSION: Findings suggest limited knowledge of palliative care and inequities in access to palliative and end-of-life care for Blacks living with life-limiting illnesses in 2 Canadian provinces. There is an urgent need for research to inform tailored and culturally acceptable strategies to improve understanding and access to palliative care and end-of-life care among Blacks in Canada.

Increasing access to palliative care for patients with advanced cancer of African and Latin American descent: a patient-oriented community-based study protocol.

BACKGROUND: Cancer disparities are a major public health concern in Canada, affecting racialized communities of Latin American and African descent, among others. This is evident in lower screening rates, lower access to curative, and palliative-intent treatments, higher rates of late cancer diagnoses and lower survival rates than the general Canadian population. We will develop an Access to Palliative Care Strategy informed by health equity and patient-oriented research principles to accelerate care improvements for patients with advanced cancer of African and Latin American descent. METHODS: This is a community-based participatory research study that will take place in two Canadian provinces. Patients and community members representatives have been engaged as partners in the planning and design of the study. We have formed a patient advisory council (PAC) with patient partners to guide the development of the Access to Palliative Care Strategy for people of African and Latin American descent. We will engage100 participants consisting of advanced cancer patients, families, and community members of African and Latin American descent, and health care providers. We will conduct in-depth interviews to delineate participants' experiences of access to palliative care. We will explore the intersections of race, gender, socioeconomic status, language barriers, and other social categorizations to elucidate their role in diverse access experiences. These findings will inform the development of an action plan to increase access to palliative care that is tailored to our study population. We will then organize conversation series to examine together with community partners and healthcare providers the appropriateness, effectiveness, risks, requirements, and convenience of the strategy. At the end of the study, we will hold knowledge exchange gatherings to share findings with the community. DISCUSSION: This study will improve our understanding of how patients with advanced cancer from racialized communities in Canada access palliative care. Elements to address gaps in access to palliative care and reduce inequities in these communities will be identified. Based on the study findings a strategy to increase access to palliative care for this population will be developed. This study will inform ways to improve access to palliative care for racialized communities in other parts of Canada and globally.

Nurse-led adult palliative care models in low- and middle-income countries: A scoping review.

AIMS: To map evidence on the nature and extent of use of nurse-led palliative care models in low- and middle-income countries serving adults with life-limiting conditions. DESIGN: A scoping review of the literature was undertaken. DATA SOURCES: A systematic search was performed from database inception to March 2022 in: Medline, EMBASE, CINAHL, Wiley Cochrane Library, SCOPUS, Web of Science, SciELO and Global Health. Main search terms included: Nurse-led AND Palliative care AND Low-and middle-income countries. Grey literature was searched from Proquest Dissertations and Theses Global, the World Health Organization and selected palliative care websites. We searched the reference list of included articles for additional studies. REVIEW METHODS: We used the framework by Arksey and O'Malley and the PRISMA-ScR guidelines. Titles and abstracts were screened by one reviewer and full text by two reviewers. Thematic analysis was used to synthesize data and results are presented descriptively using themes and categories. RESULTS: Eighteen studies were included, with majority from Sub-Saharan Africa (10/20). Three nurse-led palliative care models emerged: nurse-led empowering care, nurse-led symptom control and nurse-led multicomponent palliative care. They served particularly cancer and HIV patients and were delivered in person or by telehealth care. Reported outcomes were adherence to therapy, improved self-care ability, improved quality of life and increased access to palliative. CONCLUSIONS: The use of nurse-led palliative care in low- and middle-income countries is in its developing stages and seems feasible. Nursing roles in in low- and middle-income countries need to be expanded by developing advanced practice nurses and nurse practitioner programmes, with palliative care content. More impact evaluation studies on the use of nurse-led palliative care models in these countries are needed. IMPACT: This review highlights nurse-led care models that can enhance access and quality of life of patients with life-limiting conditions in low- and middle-income countries.

An integrative review on the oncology nurse navigator role in the Canadian context.

Several Canadian provincial cancer agencies have adopted a nurse-led model of patient navigation to decrease care fragmentation in the system. The scope of competencies of the oncology nurse navigator (ONN) in Canada has evolved over the years in response to emerging cancer care challenges. This integrative review aimed to outline the scope of competencies of the ONN role in Canada. Three databases were searched since its inception to identify Canadian studies or theoretical papers on the role of ONNs. The search yielded 62 articles of which 39 were included in the review. Three interdependent role domains were identified. The first domain of care coordinator highlighted the ONN as a coordinator of health and practical needs along the care journey. The second framed the ONN as a change agent, through increasing patients' health literacy, creating partnerships, and trusting relationships. ONNs were also described as a supporter of wellbeing, or a champion of emotional, multidimensional needs, and a transformer of the context of care. All domains were central to the navigator's success in addressing inequities in care and improving patient outcomes across care settings.

Coping strategies and quality of life among Thai family carers of community-dwelling persons living with dementia: A cross-sectional study.

AIMS: To examine the association between coping strategies and quality of life (QOL) among Thai family carers of persons living with dementia. DESIGN: A descriptive correlational quantitative design. METHODS: Data were collected between January 2021 and April 2021. A multi-pronged approach for recruitment was used. Participants completed measures assessing carer demographic characteristics, coping styles, QOL, perceived stress and perceived social support. Hierarchical multiple regression analysis was used to determine the association between types of coping strategies used and QOL scores, adjusting for carer characteristics and carers' stress and social support. RESULTS: There were 86 participants (mean age 52.84 years), and the majority were female (87.2%). After adjusting for covariates, hierarchical multiple regression revealed that only positive emotion-focused coping demonstrated a statistically significant association with total QOL scores. Problem-focused coping and negative emotion-focused coping were not significantly associated with total QOL scores of Thai family carers of persons living with dementia. CONCLUSION: Positive emotion-focused coping was associated with improved QOL scores. This finding supports the use of positive emotion-focused coping in Thai family carers of persons living with dementia, which potentially could improve the QOL of this population. IMPACT: It is essential to differentiate between positive and negative emotion-focused coping to generate valid estimates of the association between coping and QOL. Nurses should encourage carers to use positive emotion-focused coping strategies as these strategies were found to be helpful in enhancing carers' QOL.

Transcriptomics analysis of Ccl2/Cx3cr1/Crb1rd8 deficient mice provides new insights into the pathophysiology of progressive retinal degeneration.

Chronic oxidative stress and immune dysregulation are key mechanisms involved in the pathogenesis of most retinal degenerative diseases, including age-related macular degeneration. The Ccl2-/-/Cx3cr1-/-/Crb1rd8/rd8 mouse model develops a progressive degeneration phenotype, with photoreceptor atrophy, drusen-like lesions or pigment alterations at an early age; however, the role of oxidative stress and immune function in the pathogenesis of the model is poorly understood. We performed a comprehensive characterization of the Ccl2-/-/Cx3cr1-/-/Crb1rd8/rd8 mouse to evaluate how these pathways influence pathogenesis. We generated a Ccl2-/-/Cx3cr1-/- double-knockout (DKO) mouse on a C57BL/6N background (with the rd8 mutation of the Crb1 gene), assessed its retina status and function during 9 months in both in vivo and post-mortem analysis, and performed a comprehensive transcriptomic analysis. DKOrd8 mice presented focal retinal lesions with increased infiltration of microglia and involvement of Müller cells. Lesions progressed to thinning of the photoreceptor nuclear layer, causing a loss in retinal function. Transcriptomics analysis revealed major differential expression of genes involved in oxidative stress and neuronal function, in particular genes related to the mitochondrial electron transport chain and antioxidant cellular response. Our results suggest that alterations in chemokine signaling combined with the rd8 mutation in Ccl2-/-/Cx3cr1-/-/Crb1rd8/rd8 mice involve early changes in several pathways associated with age-related macular degeneration, highlighting the relevance of these processes in the pathological retinal degeneration in the DKOrd8 model.

Social disparities and symptom burden in populations with advanced cancer: specialist palliative care providers' perspectives.

Disparities in access to palliative care services for populations with social disparities have been reported in Western countries. Studies indicate that these populations tend to report higher symptom distress than other population groups. We need to further investigate how social disparities influence symptom burden to improve symptom relief in these populations. PURPOSE: To examine the perspectives of specialist palliative care providers concerning the relationship between social disparities and symptom burden in populations with advanced cancer. METHODS: Two sequential qualitative studies that followed a combination of interpretive and critical methodologies. The interpretive approach was outlined by van Manen's hermeneutic phenomenology while the critical component was informed by the works of Paulo Freire. Participants involved two specialist palliative care teams from a large acute care hospital and a large cancer center in Western Canada. Participants included 11 palliative care providers including registered nurses, nurse practitioners, physicians, and pharmacists. RESULTS: Participants perceived that social conditions that might aggravate symptom burden included low income, low education, lack of social support, language barriers, and rurality. The relationship between income and symptom burden reflected diverse views. Participants identified populations prone to complex symptom burden including homeless individuals, Indigenous people, people with a history of addictions, and people with mental health or psychosocial issues. CONCLUSION: Participants perceived that social disparities may increase symptom complexity in populations with advanced cancer. Participants did not identify ethnicity and gender as influencing symptom burden. Further research is needed to examine the interactions of social disparities, patient individuality, and symptom burden.

Non-pharmacological cancer pain interventions in populations with social disparities: a systematic review and meta-analysis.

INTRODUCTION: Global advances in pain relief have improved the quality of life of cancer populations. Yet, variation in cancer pain outcomes has been found in populations with social disparities compared to mainstream groups. Populations with social disparities bear an inequitable distribution of resources such as ethnic minorities, low income individuals, and women in vulnerable circumstances. RESEARCH PURPOSE: A systematic review and meta-analysis of the effect of non-pharmacological cancer pain interventions in cancer populations with social disparities of income, ethnicity, or gender. METHODS: Randomized controlled trials, controlled trials, and before and after studies were targeted through comprehensive multidatabase searches. Two reviewers independently screened titles/abstracts for potentially relevant studies and reviewed the full text of relevant articles for inclusion. Data were extracted from included studies by one reviewer and verified by another reviewer. Four reviewers independently completed quality assessment. Studies were grouped by intervention. Effects were evaluated for heterogeneity and pooled. RESULTS: The search found 5219 potential records. Full text of 26 reports was evaluated. Three randomized controlled trials (RCTs) met inclusion criteria, targeting ethnic minorities and underserved populations and/or women. Interventions included education, coaching, and online support groups. Studies found no significant differences in pain reduction between intervention and control groups or between ethnic minorities and their counterparts. A high risk of bias was found in all studies. Meta-analysis found no statistically significant difference on pain intensity among underserved groups, ethnic minorities, or between ethnic minorities and white counterparts. CONCLUSION: Results show the need to examine supportive care interventions particularly in populations with social disparities.

Understanding the life experience of people on hemodialysis: adherence to treatment and quality of life.

This hermeneutic-phenomenological study explores the lived experiences of patients on hemodialysis in regard to the adherence to treatment and quality of life. Fifteen patients were interviewed, including six women and nine men from three dialysis centers in Chile. Two main themes derived from the analysis: 1) embracing the disease and dialysis, and 2) preventing progression of the disease through treatment management. The findings suggest that patients recognize adherence to treatment and quality of life as conditions that derive from self-care and environmental conditions, which the healthcare provider must constantly assess for care planning to improve the adherence and quality of life in this population.

Examining the Contemporary Use of Hospitals in Canada for Palliative Care Purposes: A Population-Based Study to Enable Policy and Program Developments.

Background: It is commonly thought that most deaths in developed countries take place in hospital. Death place is a palliative care quality indicator. Objectives: To determine the use of Canadian hospitals by patients who died in hospital during the 2019-2020 year and any additional hospital utilization occurring over their last 365 days of life. Design: An investigation of population-based (2018-2020) Canadian hospital data using SAS. Settings/Subjects: All patients admitted to hospital and discharged alive or deceased. Measurements: Describe patients who died in hospital, and any additional use of hospitals by these patients over their last year of life. Results: Ninety-one thousand six hundred forty inpatients died during 2019-2020; 4.85% of all 1.88 million hospitalized individuals and 41.82% of all deaths in Canada that year. Decedents were primarily 65+ years of age (81.16%), male (53.44%), admitted through an emergency department (80.16%), and arrived by ambulance (72.15%). The most common diagnosis was the nonspecific ICD-10 defined "factors influencing health status and contact with health services" (23.75%), followed by "circulatory diseases" (18.22%), "respiratory diseases" (15.58%), and many other less common diagnoses. The average length of final hospital stay was 16.54 days, with 89.97% having some Alternative Level of Care (ALC) or ALC days recorded, indicating another care setting was preferable. Only 5.78% had cardiopulmonary resuscitation performed during their final hospitalization. Of all 91,640 decedents, 74.33% had only one admission to hospital in their last 365 days of life, while 25.67% (more often younger than older decedents) had two to five admissions. Conclusions: This study confirms a continuing shift of death and dying out of hospital in Canada. Most deaths and end-of-life care preceding death take place outside of hospitals now. Enhanced community-based services are recommended to support optimal dying processes outside of hospitals and also help more dying people avoid hospital deaths.

The politics of corruption, inequality, and the socially excluded.

In this article, the production of knowledge in the context of socially excluded people exposed to inequality, oppression, and exploitation is problematized. The analysis follows Enrique Dussel's philosophical exegesis of the politics of power and corruption and his vision of a critical transformation of the social political order. The argument is also informed by the work of critical educator Paulo Freire, who elucidates the conditions of oppression and marginalization and highlights the importance of conscientization to develop a critical awareness of these conditions. Hannah Arendt's work on the politics of understanding totalitarianism also assists in the elucidation of the machinery that operates behind oppression to sustain power and inequality. The article emphasizes the need to recognize the inequality of conditions that exists between the producer of knowledge and those who live through inequality and oppression in their lived corporality. A critical transformation of the process of production of knowledge is needed to both acknowledge the conditions that sustain this endeavour in the first place and avoid the corruption of knowledge. A work of conscientization is also necessary among knowledge producers to undertake a critical analysis of inequality that exposes the corruption of power. This analysis needs to examine and unmask the hidden mechanisms that perpetuate inequality and oppression and serve only the interests of a few. The abysmal gaps between the wealthy and the poor within and among countries bespeak a degree of human indifference that reflects a most serious and complex phenomenon that perverts something profoundly human in our societies.

Neovascular Progression and Retinal Dysfunction in the Laser-Induced Choroidal Neovascularization Mouse Model.

The mouse model of laser-induced choroidal neovascularization (LI-CNV) has been widely used to study neovascular age-related macular degeneration; however, it still lacks a comprehensive characterization. Here, CNV was induced in the eyes of 12-week-old C57BL/6J male mice by argon laser irradiation. We studied the CNV lesion progression of an LI-CNV mouse cohort by using multimodal imaging (color fundus, optical coherence tomography (OCT), and fluorescence angiography, focal electroretinography features for 14 days, and related cytokines, angiogenic factors, and reactive gliosis for 5 days. CNV lesions involving the rupture of the Bruch's membrane were confirmed using funduscopy and OCT after laser photocoagulation. During the initial stage, from the CNV induction until day 7, CNV lesions presented leakage observed by using fluorescence angiography and a typical hyperreflective area with cell infiltration, subretinal leakage, and degeneration of photoreceptors observed through OCT. This correlated with decreased retinal responses to light. Moreover, inflammatory and angiogenic markers were reduced to basal levels in the first 5 days of CNV progression. In contrast, reactive gliosis and the VEGF expression in retinal sections were sustained, with infiltration of endothelial cells in the subretinal space. In the second stage, between days 7 and 14 post-induction, we observed stabilization of the CNV lesions, a hyperfluorescent area corresponding to the formation of fibrosis, and a partial rescue of retinal function. These findings suggest that the LI-CNV lesion development goes through an acute phase during the first seven days following induction, and then the CNV lesion stabilizes. According to these results, this model is suitable for screening anti-inflammatory and anti-angiogenic drugs in the early stages of LI-CNV. At the same time, it is more convenient for screening anti-fibrotic compounds in the later stages.

Improving access to palliative care for people experiencing socioeconomic inequities: findings from a community-based pilot research study. / Améliorer l'accès aux soins palliatifs pour les personnes confrontées à des iniquités socioéconomiques : conclusions d'une étude pilote de recherche communautaire.

INTRODUCTION: In Canada, people experiencing socioeconomic inequities have higher rates of late diagnosis and lower survival rates than the general population. Palliative care services focussed on this population are scarce. We developed a community-based nursing intervention to improve access to palliative care for people experiencing socioeconomic inequities and living with life-limiting illnesses in an urban Canadian setting. METHODS: This community-based, qualitative research study combined critical and participatory research methodologies. The study was conducted in partnership with the Palliative Care Outreach Advocacy Team (PCOAT) based in Edmonton, Alberta, a team dedicated to serving populations experiencing socioeconomic inequities who require palliative care. Following an exploratory phase that served to delineate the intervention, we undertook a one-year pilot implementation during which a part-time registered nurse (RN) joined PCOAT. The RN engaged in trust building, resolution of health and practical needs and complex care coordination. Twenty-five patients participated in the intervention. Participants were interviewed at least once to explore their experiences with the intervention. Data were analyzed through thematic analysis. RESULTS: Most participants were men, were Indigenous and had advanced cancer. Participants had significant financial concerns, lived or had lived in precarious housing situations and had previously faced serious challenges accessing health care. Participants reported social and health needs including housing, finances, transportation, symptom control, harm reduction and end-of-life care. Participants reported improved access to health and social services and expressed satisfaction with the study intervention. CONCLUSION: Study findings suggest the study intervention may have contributed to improved access to palliative care, improved experiences for participants and increased equity in the delivery of care.

Repeated Topical Administration of 3 nm Cerium Oxide Nanoparticles Reverts Disease Atrophic Phenotype and Arrests Neovascular Degeneration in AMD Mouse Models.

Increased oxidative stress in the retina and retinal pigment epithelium is implicated in age-related macular degeneration (AMD). Antioxidant cerium oxide nanoparticles (CeO2NPs) have been used to treat degenerative retinal pathologies in animal models, although their delivery route is not ideal for chronic patient treatment. In this work, we prepared a formulation for ocular topical delivery that contains small (3 nm), nonaggregated biocompatible CeO2NPs. In vitro results indicate the biocompatible and protective character of the CeO2NPs, reducing oxidative stress in ARPE19 cells and inhibiting neovascularization related to pathological angiogenesis in both HUVEC and in in vitro models of neovascular growth. In the in vivo experiments, we observed the capacity of CeO2NPs to reach the retina after topical delivery and a subsequent reversion of the altered retinal transcriptome of the retinal degenerative mouse model DKOrd8 toward that of healthy control mice, together with signs of decreased inflammation and arrest of degeneration. Furthermore, CeO2NP eye drops' treatment reduced laser-induced choroidal neovascular lesions in mice by lowering VEGF and increasing PEDF levels. These results indicate that CeO2NP eye drops are a beneficial antioxidant and neuroprotective treatment for both dry and wet forms of AMD disease.

Blocking Hemopexin With Specific Antibodies: A New Strategy for Treating Diabetic Retinopathy.

Hemopexin (HPX) is overexpressed in the retina of patients with diabetes and induces the breakdown of the blood-retinal barrier in vitro. The aim of this study was to evaluate whether HPX blockade by specific antibodies (aHPX) could avoid vascular leakage in vivo and microvascular angiogenesis in vitro and ex vivo. For this purpose, the effect of intravitreal (IVT) injections of aHPX on vascular leakage was evaluated in db/db mice and rats with streptozotocin-induced diabetes using the Evans Blue method. Retinal neurodegeneration and inflammation were also evaluated. The antiangiogenic effect of aHPX on human retinal endothelial cells (HRECs) was tested by scratch wound healing and tube formation using standardized methods, as well as by choroidal sprouting assays from retinal explants obtained in rats. We found that IVT injection of aHPX significantly reduced vascular leakage, retinal neurodegeneration, and inflammation. In addition, treatment with aHPX significantly reduced HREC migration and tube formation induced by high glucose concentration and suppressed choroidal sprouting even after vascular endothelial growth factor stimulation, with this effect being higher than obtained with bevacizumab. The antipermeability and antiangiogenic effects of IVT injection of aHPX suggest the blockade or inhibition of HPX as a new strategy for the treatment of advanced stages of diabetic retinopathy. ARTICLE HIGHLIGHTS: Hemopexin (HPX) is the best-characterized permeability factor in steroid-sensitive nephrotic syndrome. We have previously reported that HPX is overexpressed in the retina of patients with diabetes and induces the breakdown of the blood-retinal barrier in vitro. Here, we report that intravitreal injection of anti-HPX antibodies significantly reduces vascular leakage, retinal neurodegeneration, and inflammation in diabetic murine models and that the immunoneutralization of HPX exerts a significant antiangiogenic effect in vitro and in retinal explants. The blockade of HPX can be considered as a new therapy for advanced stages of diabetic retinopathy.

The KPG index--a novel 3D classification system for maxillary canine impactions.

INTRODUCTION: Advancements in Cone Beam Computed Tomography (CBCT) have improved localization of impacted canines. The KPG index is the first 3-D classification system for classifying the position of canines based on their distance from the norm (1). The aim of this study was to determine if this index provides an estimate of the time necessary to treat an impacted canine using closed eruption. MATERIALS AND METHODS: CBCT scans of 28 impacted canines at The University of Texas School of Dentistry at Houston Department of Orthodontics were classified using the KPG index. The scores and categories were compared to the time from surgical exposure to proper positioning. RESULTS: Four canines were classified as "Easy," 11 as "Moderate," 9 as "Difficult," and 4 as "Extremely Difficult." Average treatment times associated in months were: "Easy"--11.23, "Moderate"--11.36, "Difficult"--12.76, and "Extremely Difficult"--13.23. CONCLUSIONS: The KPG index currently cannot be confirmed as an accurate means of estimating treatment time for an impacted canine. Further verification studies should include larger sample sizes and compare differing mechanics. However, there are limitations to 2-D imaging; therefore, the 3-D CBCT images and the KPG index, with further validation, will become increasingly valuable to orthodontists.

Participatory knowledge exchange to support palliative care in Chile: lessons learned through global health research.

The authors designed a participatory qualitative research study to develop a collaborative partnership between palliative care practitioners in Canada and in Chile. The research goal was to support the provision of palliative care in vulnerable settings through a participatory knowledge exchange process using qualitative and participatory methodologies. The study involved an interprofessional palliative care team from a primary health care centre in Chile and 5 adults receiving palliative care and their relatives. It also involved the participation of registered nurses and allied health professionals from a palliative home care team in Canada. Participatory knowledge exchange activities included teamwork with the primary health care team in Chile and a process of participatory knowledge exchange with palliative care clinicians in Chile and Canada. The study produced qualitative evidence on the efficacy of a process of participatory knowledge exchange with palliative care practitioners from 2 diverse settings.

Burden of depression among Canadian adults with cancer; results from a national survey.

OBJECTIVE: To assess the prevalence and association of depression among Canadian adults with cancer in a population-based context. METHODS: The Canadian Community Health Survey (CCHS) (2015-2016) was accessed and adult participants with cancer who completed the Personal Health Questionnaire (PHQ9) were included in the current analysis. Multivariable logistic regression was conducted to elucidate the factors associated with the development of depression. An additional multivariable logistic regression analysis was conducted to evaluate the association of depression with ever contemplating suicide (suicidal ideation). RESULTS: A total of 867 participants with cancer have completed PHQ9 were included in the current analysis (including 603 participants (69.6%) without depression (PHQ9 ≤ 4) and 264 participants (30.4%) with depression (PHQ9 > 4)). Moreover, 92 participants (10.6%) fulfill the criteria for moderate/severe depression (PHQ9 > 9). The following factors were associated with the presence of depression (PHQ9 > 4), female sex (OR for males versus females: 0.56; 95% CI: 0.34-0.93; P = 0.02); poor self-perceived health (OR for excellent health versus poor health: 0.12; 95% CI: 0.02-0.62; P = 0.01) and poor self-perceived mental health (OR for excellent mental health versus poor mental health: 0.02; 95% CI: <0.01-0.24; P < 0.01). Additional multivariable logistic regression analysis showed that depression (PHQ9 > 4) was associated with a higher probability of suicidal ideation (OR for no depression versus depression: 0.43; 95% CI: 0.21-0.91; P = 0.02). CONCLUSIONS: Depression seems to be an underdiagnosed and possibly undertreated comorbid condition among Canadian adults with cancer.

Cell therapy with hiPSC-derived RPE cells and RPCs prevents visual function loss in a rat model of retinal degeneration.

Photoreceptor loss is the principal cause of blindness in retinal degenerative diseases (RDDs). Whereas some therapies exist for early stages of RDDs, no effective treatment is currently available for later stages, and once photoreceptors are lost, the only option to rescue vision is cell transplantation. With the use of the Royal College of Surgeons (RCS) rat model of retinal degeneration, we sought to determine whether combined transplantation of human-induced pluripotent stem cell (hiPSC)-derived retinal precursor cells (RPCs) and retinal pigment epithelial (RPE) cells was superior to RPE or RPC transplantation alone in preserving retinal from degeneration. hiPSC-derived RPCs and RPE cells expressing (GFP) were transplanted into the subretinal space of rats. In vivo monitoring showed that grafted cells survived 12 weeks in the subretinal space, and rats treated with RPE + RPC therapy exhibited better conservation of the outer nuclear layer (ONL) and visual response than RPE-treated or RPC-treated rats. Transplanted RPE cells integrated in the host RPE layer, whereas RPC mostly remained in the subretinal space, although a limited number of cells integrated in the ONL. In conclusion, the combined transplantation of hiPSC-derived RPE and RPCs is a potentially superior therapeutic approach to protect retina from degeneration in RDDs.