Supportive care services in New Brunswick, Canada: An environmental scan.

Cancer diagnosis and treatment often have significant physical and psychological implications for both the survivor and their family/caregivers. Necessary services extend beyond medical treatment and include a variety of supportive care services (SCS) that address individuals' physical, social, educational, and emotional needs. This study seeks to map the SCS available in the province of New Brunswick (NB), Canada, for cancer survivors, their families, and their caregivers. An environmental scan was conducted to assess current SCS available in NB. While some SCS exist in NB, they are not always easily accessible or identifiable, and gaps in services were prevalent. In particular, a gap in services was found for individuals who are no longer actively receiving cancer treatment, as well as for family members and caregivers.

Fostering collective leadership to improve integrated primary care: lessons learned from the PriCARE program.

Case management (CM) is an intervention for improving integrated care for patients with complex care needs. The implementation of this complex intervention often raises opportunities for change and collective leadership has the potential to optimize the implementation. However, the application of collective leadership in real-world is not often described in the literature. This commentary highlights challenges faced during the implantation of a CM intervention in primary care for people with complex care needs, including stakeholders' buy-in and providers' willingness to change their practice, selection of the best person for the case manager position and staff turnover. Based on lessons learned from PriCARE research program, this paper encourages researchers to adopt collective leadership strategies for the implementation of complex interventions, including promoting a collaborative approach, fostering stakeholders' engagement in a trusting and fair environment, providing a high level of communication, and enhancing collective leadership attitudes and skills. The learnings from the PriCARE program may help guide researchers for implementing complex healthcare interventions.

Stakeholders' perceptions of a nurse-led telehealth case management intervention in primary care for patients with complex care needs: a qualitative descriptive study.

OBJECTIVE: With the onset of the COVID-19 pandemic, telehealth case management (TCM) was introduced in primary care for patients requiring care by distance. While not all healthcare needs can be addressed via telehealth, the use of information and communication technology to support healthcare delivery has the potential to contribute to the management of patients with chronic conditions and associated complex care needs. However, few qualitative studies have documented stakeholders' perceptions of TCM. This study aimed to describe patients', primary care providers' and clinic managers' perceptions of the use of a nurse-led TCM intervention for primary care patients with complex care needs. DESIGN: Qualitative descriptive study. SETTING: Three primary care clinics in three Canadian provinces. PARTICIPANTS: Patients with complex care needs (n=30), primary care providers (n=11) and clinic managers (n=2) participated in qualitative individual interviews and focus groups. INTERVENTION: TCM intervention was delivered by nurse case managers over a 6-month period. RESULTS: Participants' perceptions of the TCM intervention were summarised in three themes: (1) improved patient access, comfort and sense of reassurance; (2) trusting relationships and skilled nurse case managers; (3) activities more suitable for TCM. TCM was a generally accepted mode of primary care delivery, had many benefits for patients and providers and worked well for most activities that do not require physical assessment or treatment. Participants found TCM to be useful and a viable alternative to in-person care. CONCLUSIONS: TCM improves access to care and is successful when a relationship of trust between the nurse case manager and patient can develop over time. Healthcare policymakers and primary care providers should consider the benefits of TCM and promote this mode of delivery as a complement to in-person care for patients with complex care needs.

Patient engagement in health implementation research: A logic model.

INTRODUCTION: Growing evidence supports patient engagement (PE) in health implementation research to improve the quality, relevance and uptake of research. However, more guidance is needed to plan and operationalize PE before and throughout the research process. The aim of the study was to develop a logic model illustrating the causal links between context, resources, activities, outcomes and impact of PE in an implementation research programme. METHODS: The Patient Engagement in Health Implementation Research Logic Model (hereafter the Logic Model) was developed using a descriptive qualitative design with a participatory approach, in the context of the PriCARE programme. This programme aims to implement and evaluate case management for individuals who frequently use healthcare services in primary care clinics across five Canadian provinces. Participant observation of team meetings was performed by all team members involved in the programme and in-depth interviews were conducted by two external research assistants with team members (n = 22). A deductive thematic analysis using components of logic models as coding categories was conducted. Data were pooled in the first version of the Logic Model, which was refined in research team meetings with patient partners. The final version was validated by all team members. RESULTS: The Logic Model highlights the importance of integrating PE into the project before its commencement, with appropriate support in terms of funding and time allocation. The governance structure and leadership of both principal investigators and patient partners have significant effects on PE activities and outcomes. As an empirical and standardized illustration that facilitates a shared understanding, the Logic Model provides guidance for maximizing the impact of patient partnership in various contexts for research, patients, providers and health care. CONCLUSION: The Logic Model will help academic researchers, decision makers and patient partners plan, operationalize, and assess PE in implementation research for optimal outcomes. PATIENT OR PUBLIC CONTRIBUTION: Patient partners from the PriCARE research programme contributed to developing the research objectives and designing, developing and validating data collection tools, producing data, developing and validating the Logic Model and reviewing the manuscript.

Implementation analysis of a case management intervention for people with complex care needs in primary care: a multiple case study across Canada.

BACKGROUND: Case management is one of the most frequently performed interventions to mitigate the negative effects of high healthcare use on patients, primary care providers and the healthcare system. Reviews have addressed factors influencing case management interventions (CMI) implementation and reported common themes related to the case manager role and activities, collaboration with other primary care providers, CMI training and relationships with the patients. However, the heterogeneity of the settings in which CMI have been implemented may impair the transferability of the findings. Moreover, the underlying factors influencing the first steps of CMI implementation need to be further assessed. This study aimed to evaluate facilitators and barriers of the first implementation steps of a CMI by primary care nurses for people with complex care needs who frequently use healthcare services. METHODS: A qualitative multiple case study was conducted including six primary care clinics across four provinces in Canada. In-depth interviews and focus groups with nurse case managers, health services managers, and other primary care providers were conducted. Field notes also formed part of the data. A mixed thematic analysis, deductive and inductive, was carried out. RESULTS: Leadership of the primary care providers and managers facilitated the first steps of the of CMI implementation, as did the experience and skills of the nurse case managers and capacity development within the teams. The time required to establish CMI was a barrier at the beginning of the CMI implementation. Most nurse case managers expressed apprehension about developing an "individualized services plan" with multiple health professionals and the patient. Clinic team meetings and a nurse case managers community of practice created opportunities to address primary care providers' concerns. Participants generally perceived the CMI as a comprehensive, adaptable, and organized approach to care, providing more resources and support for patients and better coordination in primary care. CONCLUSION: Results of this study will be useful for decision makers, care providers, patients and researchers who are considering the implementation of CMI in primary care. Providing knowledge about first steps of CMI implementation will also help inform policies and best practices.

Patient and researcher experiences of patient engagement in primary care health care research: A participatory qualitative study.

BACKGROUND: Studies have highlighted common challenges and barriers to patient engagement in research, but most were based on patient partners' or academic researchers' experiences. A better understanding of how both groups differentially experience their partnership could help identify strategies to improve collaboration in patient engagement research. AIM: This study aimed to describe and compare patient partners' and academic researchers' experiences in patient engagement research. METHODS: Based on a participatory approach, a descriptive qualitative study was conducted with patient partners and academic researchers who are involved in the PriCARE research programme in primary health care to examine their experience of patient engagement. Individual semi-structured interviews with patient partners (n = 7) and academic researchers (n = 15) were conducted. Academic researchers' interview verbatims, deidentified patient partners' summaries of their interviews and summaries of meetings with patient partners were analysed using inductive thematic analysis in collaboration with patient partners. RESULTS: Patient partners and academic researchers' experiences with patient engagement are captured within four themes: (1) evolving relationships; (2) creating an environment that fosters patient engagement; (3) striking a balance; and (4) impact and value of patient engagement. Evolving relationships refers to how partnerships grew and improved over time with an acceptance of tensions and willingness to move beyond them, two-way communication and leadership of key team members. Creating an environment that fosters patient engagement requires appropriate structural support, such as clear descriptions of patient partner roles; adequate training for all team members; institutional guidance on patient engagement; regular and appropriate translation services; and financial assistance. For patient partners and academic researchers, striking a balance referred to the challenge of reconciling patient partners' interests and established research practices. Finally, both groups recognized the value and positive impact of patient engagement in the programme in terms of improving the relevance of research and the applicability of results. While patient partners and academic researchers identified similar challenges and strategies, their experiences of patient engagement differed according to their own backgrounds, motives and expectations. CONCLUSION: Both patient partners and academic researchers highlighted the importance of finding a balance between providing structure or guidelines for patient engagement, while allowing for flexibility along the way. PATIENT OR PUBLIC CONTRIBUTION: Patient partners from the PriCARE research programme were involved in the following aspects of the current study: (1) development of the research objectives; (2) planning of the research design; (3) development and validation of data collection tools (i.e., interview guides); (4) production of data (i.e., acted as interviewees); (5) validation of data analysis tools (code book); (6) analysis of qualitative data; and (7) drafting of the manuscript and contributing to other knowledge translation activities, such as conference presentations and the creation of a short animated video.

Better understanding care transitions of adults with complex health and social care needs: a study protocol.

BACKGROUND: Adults with chronic conditions who also suffer from mental health comorbidities and/or social vulnerability require services from many providers across different sectors. They may have complex health and social care needs and experience poorer health indicators and high mortality rates while generating considerable costs to the health and social services system. In response, the literature has stressed the need for a collaborative approach amongst providers to facilitate the care transition process. A better understanding of care transitions is the next step towards the improvement of integrated care models. The aim of the study is to better understand care transitions of adults with complex health and social care needs across community, primary care, and hospital settings, combining the experiences of patients and their families, providers, and health managers. METHODS/DESIGN: We will conduct a two-phase mixed methods multiple case study (quantitative and qualitative). We will work with six cases in three Canadian provinces, each case being the actual care transitions across community, primary care, and hospital settings. Adult patients with complex needs will be identified by having visited the emergency department at least three times over the previous 12 months. To ensure they have complex needs, they will be invited to complete INTERMED Self-Assessment and invited to enroll if positive. For the quantitative phase, data will be obtained through questionnaires and multi-level regression analyses will be conducted. For the qualitative phase, semi-structured interviews and focus groups will be conducted with patients, family members, care providers, and managers, and thematic analysis will be performed. Quantitative and qualitative results will be compared and then merged. DISCUSSION: This study is one of the first to examine care transitions of adults with complex needs by adopting a comprehensive vision of care transitions and bringing together the experiences of patients and family members, providers, and health managers. By using an integrated knowledge translation approach with key knowledge users, the study's findings have the potential to inform the optimization of integrated care, to positively impact the health of adults with complex needs, and reduce the economic burden to the health and social care systems.

Implementation analysis of case management interventions for frequent users of healthcare services: A multiple-case study.

Context. Case management interventions (CMIs) are recognized to improve patients' experience of integrated care, to promote better utilization of healthcare resources, and to reduce emergency department visits, hospitalizations and health care costs. However, contextual factors influencing implementation of CMIs in primary care settings in Canada still need to be studied. Objective. To examine facilitators and barriers influencing implementation planning, engagement of key actors and the start-up phases of a CMI led by nurse case managers for frequent users of healthcare services with chronic diseases and complex care needs. Study design. Qualitative multiple case study design. Setting. Six primary care clinics across four provinces in Canada. Population studied. Frequent users of healthcare services with chronic diseases and complex care needs. Intervention. A CMI led by nurse case managers that included four main components: 1) patient needs assessment; 2) care planning, including an individual services plan (ISP); 3) coordination of services among health and social services partners; 4) self-management support for patients and families. Methods. Data collection: in-depth interviews with nurse case managers (n=10), clinic managers (n=5), and other healthcare professionals (n=5); six focus groups with family physicians (n=20), and other healthcare professionals (n=8); and field notes by research coordinators. Analysis: Mixed descriptive thematic analysis; intra-case histories; systematic comparison among cases by means of a descriptive and interpretative matrix; investigator and patient partners triangulation. Outcome Measures. Factors influencing the implementation of the CMI in primary care settings. Results. Difficulty of access to patient hospital information is a common barrier to all cases, as well as identification and recruitment of patients with the greatest needs of a CMI. Nurse case managers need extra time in the short term, especially when preparing and conducting the ISP. On the other hand, a culture of patient-centredness and collaboration; managerial and clinical leadership and support; and a positive perception of the CMI alongside provider engagement helps to overcome these barriers. Conclusions. This study may help researchers, decision-makers and clinicians plan the implementation of CMIs in primary care settings for frequent users of healthcare services with chronic diseases and complex care needs.

Reconciling validity and challenges of patient comfort and understanding: Guidelines to patient-oriented questionnaires.

BACKGROUND: Patient-reported outcome measures (PROMs) are widely recognized as important tools for achieving a patient-centred approach in health research. While PROMs are subject to several stages of validation during development, even questionnaires with robust psychometric properties may challenge patient comfort and understanding. AIM: Building on the experience of patient engagement in the PriCARE research programme, this paper outlines the team's response to concerns raised by patient partners regarding the administration of the questionnaire. METHODS: Based on a participatory action research design and the patient engagement framework in the Strategy for Patient-Oriented Research of the Canadian Institutes of Health Research, PriCARE team members worked together to discuss concerns, review the questionnaires and come up with solutions. Data were collected through participant observation of team meetings. RESULTS: This paper demonstrates how patient partners were engaged in PriCARE and integrated into the programme's governance structure, focusing on the challenges that they raised regarding the questionnaires and how these were addressed by PriCARE team members in a six-step approach: (1) Recognizing patient partner concerns, discussing concerns and reframing the challenges; (2) Detailing and sharing evidence of the validity of the questionnaires; (3) Evaluating potential solutions; (4) Searching the literature for guidelines; (5) Creating guidelines; and (6) Sharing and refining guidelines. CONCLUSION: This six-step approach demonstrates how research teams can integrate patient partners as equal members, develop meaningful collaboration through recognition of individual experiences and expertise and ensure that the patient perspective is taken into consideration in research and healthcare innovation. PATIENT OR PUBLIC CONTRIBUTION: All patient partners from the PriCARE programme were actively involved in the six-step approach. They were also involved in the preparation of the manuscript.

Planning, operationalizing, and evaluating patient partners' engagement in primary care research: a logic model.

Context. There is growing evidence supporting patients' engagement (PE) in primary care research to improve the quality, relevance, and uptake of research. However, guidance is still needed to plan and operationalize this engagement during the research process. Objective. To develop a logic model illustrating empirically the causal links between context, resources, activities, and expected outcomes of PE in an implementation research program in primary care. Study design. Instrumental case study. Setting. A research program (PriCARE) aiming to implement and evaluate a case management intervention (CMI) in primary care clinics across five provinces in Canada. Population studied. Research team members. Methods. Data collection. Participant observation and in-depth interviews (n=22) conducted by two independent research assistants with research team members: principal investigators (n=5); co-investigators (n=2); research coordinators and assistants (n=8); and patient partners (n=7). Analysis. Deductive thematic analysis using components of the logic model as coding categories. All data were coded using NVivo 12 software. Data were reduced and organized in a first logic model version. Team meetings helped to refine the logic model. The final version was validated by all research team members. Results. The logic model provides an empirical illustration of the relationship between context, resources, activities, and expected outcomes for PE. Mobilized resources (human, financial, organizational, and communicational) allow research team members to be involved in many activities related to PE: recruitment, training, and support of patient partners; development of a governance structure; participation in research activities; agreement on decision-making processes; training and support of clinicians; development of tools for patients' involvement in the CMI. These activities lead to the following benefits for health research: improved communication amongst all team members, results and knowledge translation; development of a PE culture; capacity building; democratization of health research; and for healthcare: improved implementation of the intervention; improved patient engagement in their care; better health outcomes and resource utilization; support of decision-makers and clinicians; and better practices. Conclusions. The logic model may be useful for the planning, operationalization and evaluation of PPE in primary care research programs.

Patient engagement works: Patient and researcher experiences of patient partnership in primary healthcare research.

Context: Health researchers are increasingly engaging patients and their families as partners in the research process, from inception to knowledge translation. The trend toward 'patient-oriented' research is encouraged by a growing view that studies which integrate the patient perspective will make better use of resources to produce more relevant evidence that can be more easily translated to clinical settings. While there is an emerging literature on best practices, challenges, and learnings related to patient engagement (PE), few studies consider the experiences of patient partners (PP) and researchers in the same project. This presentation will present PP and researcher experiences of PE, highlighting important similarities and differences and proposing recommendations. Objectives: To characterize PE experience from the perspective of researchers and PP working together on the same research program, PriCARE; to identify successes and challenges; to ascertain contributions of PE in health research. Study Design: Qualitative. Setting or Dataset: This study was conducted within the larger 5-province PriCARE study examining a nurse-led case management intervention for primary care patients with complex needs. Population studied: 22 members of the study team (7 PP, 8 coordinators, 2 co-investigators, 5 principal investigators). Methods: Data collection: In-depth interviews using guides co-created by researchers and PP covering topics such as PE-related training and knowledge, and reflections on PE processes and impact. Research assistants external to the PriCARE study conducted interviews, transcribed researcher interviews, and generated a summary of PP interviews. Analysis: Data were analyzed thematically using a coding framework that was co-developed with PP. Outcome Measures: Researcher and patient experiences of PE, PP contributions to health research. Results: All team members need PE training at the beginning of and throughout the research process. Evolving trust and flexibility helped team members to navigate different experiences and priorities. PP make integral contributions to study and instrument design, data analysis, and knowledge translation. Clear expectations about the degree and nature of PE and team members' roles are critical. Conclusions: Meaningful PE requires patient-researcher partnership and clear expectation setting at the outset and throughout the research process, and ongoing flexibility to adapt.

Symptom-based patient stratification in mental illness using clinical notes.

Mental illnesses are highly heterogeneous with diagnoses based on symptoms that are generally qualitative, subjective, and documented in free text clinical notes rather than as structured data. Moreover, there exists significant variation in symptoms within diagnostic categories as well as substantial overlap in symptoms between diagnostic categories. These factors pose extra challenges for phenotyping patients with mental illness, a task that has proven challenging even for seemingly well characterized diseases. The ability to identify more homogeneous patient groups could both increase our ability to apply a precision medicine approach to psychiatric disorders and enable elucidation of underlying biological mechanism of pathology. We describe a novel approach to deep phenotyping in mental illness in which contextual term extraction is used to identify constellations of symptoms in a cohort of patients diagnosed with schizophrenia and related disorders. We applied topic modeling and dimensionality reduction to identify similar groups of patients and evaluate the resulting clusters through visualization and interrogation of clinically interpretable weighted features. Our findings show that patients diagnosed with schizophrenia may be meaningfully stratified using symptom-based clustering.

Serum albumin-coated bone allograft (BoneAlbumin) results in faster bone formation and mechanically stronger bone in aging rats.

Serum albumin-coated bone allografts (BoneAlbumin) have successfully supported bone regeneration in various experimental models by activating endogenous progenitors. However, the effect of tissue aging, linked to declining stem cell function, has yet to be explicitly examined within the context of BoneAlbumin's regenerative capacity. Stem cell function was tested with an in vitro attachment assay, which showed that albumin coating increases stem cell attachment on demineralized bone surfaces in an aging cell population. Bone regeneration was investigated in vivo by creating critical size bone defects on the parietal bones of aging female rats. Demineralized bone matrices with and without serum albumin coating were used to fill the defects. Bone regeneration was determined by measuring the density and the size of the remaining bone defect with computed tomography (CT). Microcomputed tomography (MicroCT) and mechanical testing were performed on the parietal bone explants. In vivo CT and ex vivo microCT measurements showed better regeneration with albumin-coated grafts. Additionally, the albumin-coated group showed a twofold increase in peak fracture force compared with uncoated allografts. In the present study, serum albumin-coated demineralized bone matrices successfully supported faster and functionally superior bone regeneration in aging rats. Because stem cell function, a key contributor of bone remodelling, decreases with age and serum albumin is an effective activator of endogenous progenitor cells, this method could be an effective and safe adjuvant in bone regeneration of aging adult and osteo-compromised populations.

You Belong in the Room: Addressing the Underrepresentation of Physicians With Physical Disabilities.

In this Invited Commentary, the authors use personal experiences to highlight how obstacles for qualified candidates with physical disabilities persist in medical education, especially at entry to and early stages of training. In an era when medical schools and residency programs advocate principles of diversity and inclusion, it is estimated that medical students with physical disabilities still comprise less than 1% of learners. The authors present four constructive actions to address the underrepresentation of individuals with physical disabilities in medical schools: (1) acknowledging biases, (2) building networks, (3) reassessing the undifferentiated model of medical education, and (4) advocating the advantages of physicians with disabilities. Supporting trainees and practicing physicians with physical disabilities requires pragmatic evaluation of the essential functions of contemporary medical education, as well as lateral thinking to approach clinical work in innovative ways.

Serum albumin as a local therapeutic agent in cell therapy and tissue engineering.

Albumin is a major plasma protein that has become ubiquitous in regenerative medicine research. As such, many studies have examined its structure and advantageous properties. However, a systematic and comprehensive understanding of albumin's role, capabilities and therapeutic potential still eludes the field. In the present work, we review how albumin is applied in tissue engineering, including cell culture and storage, in vitro fertilization and transplantation. Furthermore, we discuss how albumin's physiological role extends beyond a carrier for metal ions, fatty acids, pharmacons and growth factors. Albumin acts as a bacteriostatic coating that simultaneously promotes attachment and proliferation of eukaryotic cells. These properties with the combination of free radical scavenging, neutrophil activation and as a buffer molecule already make the albumin protein beneficial in healing processes supporting functional tissue remodeling. Nevertheless, recent data revealed that albumin can be synthesized by osteoblasts and its local concentration is raised after bone trauma. Interestingly, by increasing the local albumin concentration in vivo, faster bone healing is achieved, possibly because albumin recruits endogenous stem cells and promotes the growth of new bone. These data also suggest an active role of albumin, even though a specific receptor has not yet been identified. Together, this discussion sheds light on why the extravascular use of the albumin molecule is in the scope of scientific investigations and why it should be considered as a local therapeutic agent in regenerative medicine. © 2016 BioFactors, 43(3):315-330, 2017.

Bone-Albumin filling decreases donor site morbidity and enhances bone formation after anterior cruciate ligament reconstruction with bone-patellar tendon-bone autografts.

PURPOSE: Donor site pain affects 32-43 % of patients after anterior cruciate ligament surgery when the autograft is freshly harvested bone-patellar tendon-bone tissue. Our aim was to compare functional and morphological differences between donor sites with and without serum albumin-coated bone allograft filling. METHODS: After harvesting and implanting the graft, the tibia site was filled with either fresh autologous cancellous bone enhanced with albumin-coated allograft or autologous bone alone. The patella site was filled either with albumin-coated allograft or with blood clot. Knee function was evaluated by the VISA, Lysholm and IKDC scores and a visual analog scale of pain during standing, kneeling and crouching after six weeks and six months. Computed tomography was performed at six months for morphological evaluation. RESULTS: At six weeks, both groups were still recovering from surgery and the overall knee function was still impaired but the functional scores were significantly higher in the Bone-Albumin group. The pain with crouching and kneeling was also lower as compared to controls. At six months, the knee function scores were close to normal, with a slight decrease in the controls. Pain at kneeling was still prominent in the controls, but significantly lower in the Bone-Albumin group. Computed tomography showed significantly smaller bone defects and higher bone density in the Bone-Albumin group. CONCLUSIONS: Results from the present study indicate that donor site pain, a disturbing long-term side effect of bone-patellar tendon-bone surgery, is significantly reduced if bone buildup in the patella and the tibia is augmented by serum albumin-coated bone allografts.

Is There a Bipolar Prodrome Among Children and Adolescents?

Bipolar disorder in youth substantially impairs behavior, family, and social functioning and interferes with developmental course. There is increasing interest in defining a bipolar prodrome similar to that reported in early-onset psychosis that will allow for earlier intervention and reduction in overall morbidity and mortality. Several lines of research have addressed this important issue including studies of offspring of bipolar parents, high-risk cohorts, and longitudinal follow-up of subjects with major depressive disorder (MDD), ADHD, and bipolar spectrum disorder. The development and validation of bipolar prodrome rating scales also shows promise. Recent attempts to intervene at earlier stages of bipolar disorder have led to some positive outcomes. However, a controversy remains concerning the identification and management of the earliest symptoms. Further research is needed to fully validate a bipolar prodrome and to determine the optimal course of action at various stages of illness.

Effects of amniotic epithelial cell transplantation in endothelial injury.

PURPOSE: Human amniotic epithelial cells (hAECs) are promising tools for endothelial repair in vascular regenerative medicine. We hypothesized that these epithelial cells are capable of repairing the damaged endothelial layer following balloon injury of the carotid artery in adult male rats. RESULTS: Two days after injury, the transplanted hAECs were observed at the luminal side of the arterial wall. Then, 4 weeks after the injury, significant intimal thickening was observed in both untreated and cell implanted vessels. Constriction was decreased in both implanted and control animals. Immunohistochemical analysis showed a few surviving cells in the intact arterial wall, but no cells were observed at the site of injury. Interestingly, acetylcholine-induced dilation was preserved in the intact side and the sham-transplanted injured arteries, but it was a trend toward decreased vasodilation in the hAECs' transplanted vessels. CONCLUSION: We conclude that hAECs were able to incorporate into the arterial wall without immunosuppression, but failed to improve vascular function, highlighting that morphological implantation does not necessarily result in functional benefits and underscoring the need to understand other mechanisms of endothelial regeneration.