Elevated NLRP3 Inflammasome Activation Is Associated with Motor Neuron Degeneration in ALS.

Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease characterized by motor neuron degeneration in the central nervous system. Recent research has increasingly linked the activation of nucleotide oligomerization domain-like receptor protein 3 (NLRP3) inflammasome to ALS pathogenesis. NLRP3 activation triggers Caspase 1 (CASP 1) auto-activation, leading to the cleavage of Gasdermin D (GSDMD) and pore formation on the cellular membrane. This process facilitates cytokine secretion and ultimately results in pyroptotic cell death, highlighting the complex interplay of inflammation and neurodegeneration in ALS. This study aimed to characterize the NLRP3 inflammasome components and their colocalization with cellular markers using the wobbler mouse as an ALS animal model. Firstly, we checked the levels of miR-223-3p because of its association with NLRP3 inflammasome activity. The wobbler mice showed an increased expression of miR-223-3p in the ventral horn, spinal cord, and cerebellum tissues. Next, increased levels of NLRP3, pro-CASP 1, cleaved CASP 1 (c-CASP 1), full-length GSDMD, and cleaved GDSMD revealed NLRP3 inflammasome activation in wobbler spinal cords, but not in the cerebellum. Furthermore, we investigated the colocalization of the aforementioned proteins with neurons, microglia, and astrocyte markers in the spinal cord tissue. Evidently, the wobbler mice displayed microgliosis, astrogliosis, and motor neuron degeneration in this tissue. Additionally, we showed the upregulation of protein levels and the colocalization of NLRP3, c-CASP1, and GSDMD in neurons, as well as in microglia and astrocytes. Overall, this study demonstrated the involvement of NLRP3 inflammasome activation and pyroptotic cell death in the spinal cord tissue of wobbler mice, which could further exacerbate the motor neuron degeneration and neuroinflammation in this ALS mouse model.

Unraveling the gut-brain axis: the impact of steroid hormones and nutrition on Parkinson's disease.

This comprehensive review explores the intricate relationship between nutrition, the gut microbiome, steroid hormones, and Parkinson's disease within the context of the gut-brain axis. The gut-brain axis plays a pivotal role in neurodegenerative diseases like Parkinson's disease, encompassing diverse components such as the gut microbiota, immune system, metabolism, and neural pathways. The gut microbiome, profoundly influenced by dietary factors, emerges as a key player. Nutrition during the first 1000 days of life shapes the gut microbiota composition, influencing immune responses and impacting both child development and adult health. High-fat, high-sugar diets can disrupt this delicate balance, contributing to inflammation and immune dysfunction. Exploring nutritional strategies, the Mediterranean diet's anti-inflammatory and antioxidant properties show promise in reducing Parkinson's disease risk. Microbiome-targeted dietary approaches and the ketogenic diet hold the potential in improving brain disorders. Beyond nutrition, emerging research uncovers potential interactions between steroid hormones, nutrition, and Parkinson's disease. Progesterone, with its anti-inflammatory properties and presence in the nervous system, offers a novel option for Parkinson's disease therapy. Its ability to enhance neuroprotection within the enteric nervous system presents exciting prospects. The review addresses the hypothesis that α-synuclein aggregates originate from the gut and may enter the brain via the vagus nerve. Gastrointestinal symptoms preceding motor symptoms support this hypothesis. Dysfunctional gut-brain signaling during gut dysbiosis contributes to inflammation and neurotransmitter imbalances, emphasizing the potential of microbiota-based interventions. In summary, this review uncovers the complex web of interactions between nutrition, the gut microbiome, steroid hormones, and Parkinson's disease within the gut-brain axis framework. Understanding these connections not only offers novel therapeutic insights but also illuminates the origins of neurodegenerative diseases such as Parkinson's disease.

Innovative in vivo rat model for global cerebral hypoxia: a new approach to investigate therapeutic and preventive drugs.

Introduction: Severe acute global cerebral hypoxia can lead to significant disability in humans. Although different animal models have been described to study hypoxia, there is no endogenous model that considers hypoxia and its effect on the brain as an independent factor. Thus, we developed a minimally invasive rat model, which is based on the non-depolarizing muscle blocking agent rocuronium in anesthetized animals. This drug causes respiratory insufficiency by paralysis of the striated muscles. Methods: In this study, 14 rats underwent 12 min of hypoxemia with an oxygen saturation of approximately 60% measured by pulse oximetry; thereafter, animals obtained sugammadex to antagonize rocuronium immediately. Results: Compared to controls (14 rats, anesthesia only), hypoxic animals demonstrated significant morphological alterations in the hippocampus (cell decrease in the CA 1 region) and the cerebellum (Purkinje cell decrease), as well as significant changes in hypoxia markers in blood (Hif2α, Il1ß, Tgf1ß, Tnfα, S100b, cspg2, neuron-specific enolase), hippocampus (Il1ß, Tnfα, S100b, cspg2, NSE), and cerebellum (Hif1α, Tnfα, S100b, cspg2, NSE). Effects were more pronounced in females than in males. Discussion: Consequently, this model is suitable to induce hypoxemia with consecutive global cerebral hypoxia. As significant morphological and biochemical changes were proven, it can be used to investigate therapeutic and preventive drugs for global cerebral hypoxia.

Progesterone: A Neuroprotective Steroid of the Intestine.

The enteric nervous system (ENS) is an intrinsic network of neuronal ganglia in the intestinal tube with about 100 million neurons located in the myenteric plexus and submucosal plexus. These neurons being affected in neurodegenerative diseases, such as Parkinson's disease, before pathological changes in the central nervous system (CNS) become detectable is currently a subject of discussion. Understanding how to protect these neurons is, therefore, particularly important. Since it has already been shown that the neurosteroid progesterone mediates neuroprotective effects in the CNS and PNS, it is now equally important to see whether progesterone has similar effects in the ENS. For this purpose, the RT-qPCR analyses of laser microdissected ENS neurons were performed, showing for the first time the expression of the different progesterone receptors (PR-A/B; mPRa, mPRb, PGRMC1) in rats at different developmental stages. This was also confirmed in ENS ganglia using immunofluorescence techniques and confocal laser scanning microscopy. To analyze the potential neuroprotective effects of progesterone in the ENS, we stressed dissociated ENS cells with rotenone to induce damage typical of Parkinson's disease. The potential neuroprotective effects of progesterone were then analyzed in this system. Treatment of cultured ENS neurons with progesterone reduced cell death by 45%, underscoring the tremendous neuroprotective potential of progesterone in the ENS. The additional administration of the PGRMC1 antagonist AG205 abolished the observed effect, indicating the crucial role of PGRMC1 with regard to the neuroprotective effect of progesterone.

Regulating During Crisis: A Qualitative Comparative Case Study of Nursing Regulatory Responses to the COVID-19 Pandemic.

Background: The COVID-19 pandemic placed intense pressure on nursing regulatory bodies to ensure an adequate healthcare workforce while maintaining public safety. Purpose: Our objectives were to analyze regulatory bodies' responses during the pandemic, examine how nursing regulators conceptualize the public interest during a public health crisis, and explore the influence of a public health crisis on the balancing of regulatory principles. We aimed to develop a clearer understanding of regulating during a crisis by identifying themes within regulatory responses. Methods: We conducted a qualitative comparative case study examining the pandemic responses of eight nursing regulators in three Canadian provinces and three U.S. states. Data were collected from semi-structured interviews with 19 representatives of nursing regulatory bodies and 206 publicly available documents and analyzed thematically. Results: Five themes were constructed from the data: (1) risk-based responses to reduce regulatory burden; (2) agility and flexibility in regulatory pandemic responses; (3) working with stakeholders for a systems-based approach; (4) valuing consistency in regulatory approaches across jurisdictions; and (5) the pandemic as a catalyst for innovation. Specifically, we identified that the meaning of "public interest" in the context of high workforce demand was a key consideration for regulators. Conclusion: Our results demonstrate the intensity of effort involved in nursing regulatory responses and the significant contribution of nursing regulation to the healthcare system's pandemic response. Our results also indicate a shift in thinking around broader public interest issues, beyond the conduct and competence of individual nurses, to include pressing societal issues. Regulators are beginning to grapple with these longer-term issues and policy tensions.

Unintended Consequences of "Breast Is Best" Messaging on Mothers: An Autoethnography.

Purpose: To describe the breastfeeding experiences of a dietitian and mother so as to expose dominant discourses reinforcing expert-driven imperatives to breastfeed.Methods: Professional experiences and personal challenges related to breastfeeding promotion are described, analyzed, and interpreted using autoethnography. The social ecological model (SEM) is used as a sensitizing concept to guide the organization, presentation, and analysis of experiences.Results: Data were organized into two discussion themes: breastfeeding promotion practices and "failure" to breastfeed. Dominant discourses reinforcing expert-driven imperatives to breastfeed are revealed, including health as a duty, intensive motherhood, and mother blame. Discourses promoting or reinforcing breastfeeding simultaneously judge and denormalize formula-feeding.Conclusions: Contemporary breastfeeding promotion messages and strategies are quiet coercions used to influence infant-feeding decisions and do not support the principles of evidence-based practice, person-centred care, and informed choice.

Methods to Study the Myenteric Plexus of Rat Small Intestine.

The close interaction between the enteric nervous system, microbiome, and brain in vertebrates is an emerging topic of recent studies. Different species such as rat, mouse, and human are currently being used for this purpose, among others. The transferability of protocols for tissue isolation and sample collection is not always straightforward. Thus, the present work presents a new protocol for isolation and sample collection of rat myenteric plexus cells for in vivo as well as in vitro studies. With the methods and chemicals described in detail, a wide variety of investigations can be performed with regard to normal physiological as well as pathological processes in the postnatal developing enteric nervous system. The fast and efficient preparation of the intestine as the first step is particularly important. We have developed and described a LIENS chamber to obtain optimal tissue quality during intestinal freezing. Cryosections of the flat, snap-frozen intestine can then be prepared for histological examination of the various wall layers of the intestine, e.g. by immunohistochemistry. In addition, these cryosections are suitable for the preparation of defined regions, as shown here using the ganglia of the mesenteric plexus. This specific tissue was obtained by laser microdissection, making the presented methodology also suitable for subsequent analyses that require high quality (specificity) of the samples. Furthermore, we present here a fully modernized protocol for the cultivation of myenteric neurons from the rat intestine, which is suitable for a variety of in vitro studies.

Lessons learned from clinical course design in the pandemic: Pedagogical implications from a qualitative analysis.

AIMS: The purpose of this study was to examine clinical pedagogy based on experiences of changes and adaptations to clinical courses that occurred in nursing education during the pandemic. Beyond learning how to manage nursing education during a pandemic or other crisis, we uncover the lessons to be learned for overall improvement of nursing education. DESIGN: Qualitative descriptive analysis using semi-structured interview data with baccalaureate nursing students. METHODS: Data were collected in the spring of 2021 using semi-structured interview with 15 participants. Transcribed text was analysed using thematic content analysis. The COREQ checklist was used to guide our reporting. RESULTS: Three themes were identified related to course design in clinical courses for nursing students: the role and limitations of simulation, competency evaluations and career implications. Students expressed some concern over not 'finishing hours', loss of in-person clinical experiences and their reduced exposure to different clinical settings. CONCLUSION: To prepare work-ready nurses, educators need to keep in mind the trends, issues and demands of future healthcare systems. Simulation may have been a temporary measure to achieve clinical competence during the pandemic but needs to be of high-quality and cannot meet all the expected learning outcomes of clinical courses. Exposure to different patients, families and communities will ensure that the future nursing workforce has experience, socialization, competence, and desire to work in various clinical settings. Competency evaluation similarly needs to be robust and objective and consider the role and perception of hours completed. PATIENT OR PUBLIC CONTRIBUTION: No patient or public contribution. Participants were nursing students.

#Morethanavisitor: Experiences of COVID-19 visitor restrictions in Canadian long-term care facilities.

Objective: The purpose of this study was to understand the experiences of families, residents, and staff around visitor restriction policies in long-term care during the COVID-19 pandemic in Canada. Background: Beginning in March 2020, public health orders across Canada restricted visitors to long-term care facilities to curb the spread of the infection. This included family caregivers who provide significant support to residents to meet their physical, psychological, social, and safety needs. Method: We collected data from publicly available news and social media. News articles, blogs, and tweets from Canada were collected from March 2020 to April 2021. In total, 40 news articles, eight blogs, and 23 tweets were analyzed using generic qualitative description. Results: Reports from family members indicate that some residents may have died from malnutrition, dehydration, and isolation, rather than from COVID-19, because of the sudden and prolonged absence of family caregivers. There are long-term impacts on family suffering and long-term care worker burnout. Policy and structural issues were identified. Conclusion: Experiences in long-term care reflected not only impacts of pandemic-related visitor restrictions, but also long-standing funding and workforce issues. Implications: Involvement of family, and specifically family caregivers, is crucial in policy decisions, even in unusual circumstances, such as the pandemic.

Effect of online versus in-person clinical experiences on nursing student's competency development: A cross-sectional, quasi-experimental design.

BACKGROUND: Clinical experience is an important component of nursing education, yet placements in agencies are hard to secure, and evaluation of outcomes challenging. The shift to virtual, online clinical courses during the pandemic created the conditions of a natural experiment. OBJECTIVES: To compare differences in outcomes between an in-person and online design for a family and community health clinical course. DESIGN: Quasi-experimental, 2-group, cross-sectional study. METHODS: Competency evaluations were reviewed from a baccalaureate nursing program in Canada from 19 students who completed an in-person clinical, and 32 students who completed an online clinical. Quantitative analysis compared competencies achieved, interest in community health nursing, and linguistic analysis of unstructured narratives using natural language processing. RESULTS: There are differences in competency evaluations for in-person versus online community clinical courses, and potential implications for future interest in community health. Natural language processing detected differences in content and psychological processes between the two groups. CONCLUSIONS: Nursing programs could apply this methodology to track impact of changes to clinical course design on achievement of competencies. There are important differences in outcomes between online and in-person clinical courses.

Cognitive and implicit biases in nurses' judgment and decision-making: A scoping review.

BACKGROUND: Cognitive and implicit biases of healthcare providers can lead to adverse events in healthcare and have been identified as a patient safety concern. Most research on the impact of these systematic errors in judgment has been focused on diagnostic decision-making, primarily by physicians. As the largest component of the workforce, nurses make numerous decisions that affect patient outcomes; however, literature on nurses' clinical judgment often overlooks the potential impact of bias on these decisions. The aim of this study was to map the evidence and key concepts related to bias in nurses' judgment and decision-making, including interventions to correct or overcome these biases. METHODS: We conducted a scoping review using Joanna Briggs methodology. In November 2020 we searched CINAHL, PsychInfo, and PubMed databases to identify relevant literature. Inclusion criteria were primary research about nurses' bias; evidence of a nursing decision or action; and English language. No date or geographic limitations were set. RESULTS: We found 77 items that met the inclusion criteria. Over half of these items were published in the last 12 years. Most research focused on implicit biases related to racial/ethnic identity, obesity, and gender; other articles examined confirmation, attribution, anchoring, and hindsight biases. Some articles examined heuristics and were included if they described the process of, and the problems with, nurse decision-making. Only 5 studies tested interventions to overcome or correct biases. 61 of the studies relied on vignettes, surveys, or recall methods, rather than examining real-world nursing practice. This could be a serious oversight because contextual factors such as cognitive load, which have a significant impact on judgment and decision-making, are not necessarily captured with vignette or survey studies. Furthermore, survey and vignette studies make it difficult to quantify the impact of these biases in the healthcare system. CONCLUSIONS: Given the serious effects that bias has on nurses' clinical judgment, and thereby patient outcomes, a concerted, systematic effort to identify and test debiasing strategies in real-world nursing settings is needed. TWEETABLE ABSTRACT: Bias affects nurses' clinical judgment - we need to know how to fix it.

Neuroprotective Effects of VEGF in the Enteric Nervous System.

Although the enteric nervous system (ENS) functions largely autonomously as part of the peripheral nervous system (PNS), it is connected to the central nervous system (CNS) via the gut-brain axis. In many neurodegenerative diseases, pathological changes occur in addition to gastrointestinal symptoms, such as alpha-synuclein aggregates in Parkinson's disease, which are found early in the ENS. In both the CNS and PNS, vascular endothelial growth factor (VEGF) mediates neuroprotective and neuroregenerative effects. Since the ENS with its close connection to the microbiome and the immune system is discussed as the origin of neurodegenerative diseases, it is necessary to investigate the possibly positive effects of VEGF on enteric neurons. Using laser microdissection and subsequent quantitative RT-PCR as well as immunohistochemistry, for the first time we were able to detect and localize VEGF receptor expression in rat myenteric neurons of different ages. Furthermore, we demonstrate direct neuroprotective effects of VEGF in the ENS in cell cultures. Thus, our results suggest a promising approach regarding neuroprotection, as the use of VEGF (may) prevent neuronal damage in the ENS.

Effects of progesterone on T-type-Ca2+-channel expression in Purkinje cells.

Plasticity of cerebellar Purkinje cells (PC) is influenced by progesterone via the classical progesterone receptors PR-A and PR-B by stimulating dendritogenesis, spinogenesis, and synaptogenesis in these cells. Dissociated PC cultures were used to analyze progesterone effects at a molecular level on the voltage-gated T-type-Ca2+-channels Cav3.1, Cav3.2, and Cav3.3 as they helped determine neuronal plasticity by regulating Ca2+-influx in neuronal cells. The results showed direct effects of progesterone on the mRNA expression of T-type-Ca2+-channels, as well as on the protein kinases A and C being involved in downstream signaling pathways that play an important role in neuronal plasticity. For the mRNA expression studies of T-type-Ca2+-channels and protein kinases of the signaling cascade, laser microdissection and purified PC cultures of different maturation stages were used. Immunohistochemical staining was also performed to characterize the localization of T-type-Ca2+-channels in PC. Experimental progesterone treatment was performed on the purified PC culture for 24 and 48 hours. Our results show that progesterone increases the expression of Cav3.1 and Cav3.3 and associated protein kinases A and C in PC at the mRNA level within 48 hours after treatment at latest. These effects extend the current knowledge of the function of progesterone in the central nervous system and provide an explanatory approach for its influence on neuronal plasticity.

Expression Pattern of T-Type Ca2+ Channels in Cerebellar Purkinje Cells after VEGF Treatment.

T-type Ca2+ channels, generating low threshold calcium influx in neurons, play a crucial role in the function of neuronal networks and their plasticity. To further investigate their role in the complex field of research in plasticity of neurons on a molecular level, this study aimed to analyse the impact of the vascular endothelial growth factor (VEGF) on these channels. VEGF, known as a player in vasculogenesis, also shows potent influence in the central nervous system, where it elicits neuronal growth. To investigate the influence of VEGF on the three T-type Ca2+ channel isoforms, Cav3.1 (encoded by Cacna1g), Cav3.2 (encoded by Cacna1h), and Cav3.3 (encoded by Cacna1i), lasermicrodissection of in vivo-grown Purkinje cells (PCs) was performed, gene expression was analysed via qPCR and compared to in vitro-grown PCs. We investigated the VEGF receptor composition of in vivo- and in vitro-grown PCs and underlined the importance of VEGF receptor 2 for PCs. Furthermore, we performed immunostaining of T-type Ca2+ channels with in vivo- and in vitro-grown PCs and showed the distribution of T-type Ca2+ channel expression during PC development. Overall, our findings provide the first evidence that the mRNA expression of Cav3.1, Cav3.2, and Cav3.3 increases due to VEGF stimulation, which indicates an impact of VEGF on neuronal plasticity.

The Relational Role of Managers in Support of Teamwork.

In healthcare, teamwork is promoted as a means of delivering high-quality care. Although the literature emphasizes the personal responsibility of healthcare workers to work effectively within teams, it is equally vital to understand the role of leaders in supporting teamwork. In a focused ethnography that examined teamwork and its impact on care delivery and job satisfaction for healthcare workers, our participants shared how their leaders impacted team functioning. In this study, we examined these data related to leadership and found a strong daily relational component to team management, in contrast to high-level, strategic recommendations in the literature; this has significant implications for leaders.

Ethical challenges in accessing participants at a research site.

BACKGROUND: One of the main requirements of qualitative research is to obtain access to participants. Researchers rely on gatekeepers for access to study sites and their communities of stakeholders, opportunities to communicate their studies to potential participants, and to locate meeting and interview spaces. AIM: To share the challenges the authors encountered with gatekeepers during a study and how they managed these challenges. DISCUSSION: The authors conducted a focused ethnographic study in two healthcare organisations. Their goal was to recruit, interview and observe staff from across the institutions and a range of occupational groups, to explore their experiences of teamwork and the effects their work relationships had on their job satisfaction. Managers in the organisations were enthusiastic about the study, providing much needed support to the authors. However, the authors became concerned that staff might have felt inadvertently coerced to participate in the study. This challenged the authors' notions of research ethics, prompting discussion about how to best manage aspects of the study, such as information sessions, snowball sampling and consent. CONCLUSION: Explaining the principles of research ethics to gatekeepers can prevent them inadvertently making employees feel coerced into participating. Ensuring potential participants are fully aware of their rights and the voluntary nature of the study can make them more likely to participate. IMPLICATIONS FOR PRACTICE: Before any study begins and frequently during the study, it is important that researchers discuss with potential participants and gatekeepers ethical principles, including confidentiality, anonymity and the right to participate or withdraw from the study.

Acute care nursing team members' perceptions of roles: Their own and each other's.

AIM: To examine registered nurses', licensed practical nurses' and health care aides' perceptions of their and each other's roles. BACKGROUND: Nursing team members' perceptions about their own and each other's roles affect how they understand their contributions to patient care and their work relationships and social status within health care organisations. There is a paucity of literature on how nursing team members perceive their roles and those of their colleagues. DESIGN: Secondary analysis of qualitative data using qualitative description. The parent study used grounded theory to examine nursing care for hospitalized older adults. METHOD: Conventional content analysis of interview transcripts and field notes from the original study. RESULTS: All nursing team members reported satisfaction from providing direct care. Registered nurses were uniquely responsible for leadership. Scope-of-practice changes contributed to role confusion and tension among team members. CONCLUSIONS: More research is needed to better understand how to support nursing teams learning about one another. IMPLICATIONS FOR NURSING MANAGEMENT: Nurse managers could facilitate clarification about nursing roles and support effective role deployment.

Fingolimod for Irradiation-Induced Neurodegeneration.

BACKGROUND: Cranial irradiation is a common therapy for the treatment of brain tumors, but unfortunately patients suffer from side effects, particularly cognitive impairment, caused by neurodegenerative and neuroinflammatory mechanisms. Finding a therapeutic agent protecting hippocampal neurons would be beneficial. Fingolimod (FTY720), a sphingosine-1-phosphate receptor modulator approved for multiple sclerosis, is an immunosuppressant and known to enhance proliferation and differentiation of neuronal precursor cells (NPCs). OBJECTIVES: To investigate whether pre-treatment with FTY720 protects NPCs in vitro and in vivo from irradiation-induced damage. METHODS: Neuronal precursor cells were isolated from E13 C57BL/6 wildtype mice, treated at day 0 of differentiation with FTY720 and irradiated on day 6 with 1 Gy. NPCs were analyzed for markers of cell death (PI, caspase-3), proliferation (Ki67), and differentiation (DCX, ßIII-tubulin). Adult C57BL/6 wildtype mice were treated with FTY720 (1 mg/kg) and received a single dose of 6 Gy cranial irradiation at day 7. Using immunohistochemistry, we analyzed DCX and BrdU as markers of neurogenesis and Iba1, GFAP, and CD3 to visualize inflammation in the dentate gyrus (DG) and the subventricular zone (SVZ). B6(Cg)-Tyrc-2J/J DCX-luc reporter mice were used for bioluminescence imaging to evaluate the effect of FTY720 on neurogenesis in the DG and the spinal cord of naïve mice. RESULTS: FTY720 protected NPCs against irradiation induced cell death in vitro. Treatment with FTY720 dose-dependently reduced the number of PI+ cells 24 and 96 h after irradiation without effecting proliferation or neuronal differentiation. In vivo treatment resulted in a significant survival of DCX+ neurons in the DG and the SVZ 4 weeks after irradiation as well as a slight increase of proliferating cells. FTY720 inhibited microglia activation 24 h after X-ray exposure in the DG, while astrocyte activation was unaffected and no lymphocyte infiltrations were found. In naïve mice, FTY720 treatment for 4 weeks had no effect on neurogenesis. CONCLUSION: FTY720 treatment of NPCs prior to X-ray exposure and of mice prior to cranial irradiation is neuroprotective. No effects on neurogenesis were found.

Nursing care providers' perceptions on their role contributions in patient care: An integrative review.

AIMS AND OBJECTIVES: To explore registered nurses', licensed practical nurses' and healthcare aides' perceptions of their own and each other's role contributions. BACKGROUND: In response to contemporary economic and political pressures, healthcare institutions across the world have endeavoured to download job duties to less educated healthcare providers. As a result, nursing care is usually delivered by a team of nursing staff that have different roles. This means that there are fewer registered nurses and more licensed practical nurses and healthcare aides on nursing teams, despite evidence that increased numbers of registered nurses improve patient safety and care outcomes. DESIGN: This study was an integrative review using Whittemore and Knafl's stages for ensuring rigour. These stages include problem identification, literature searching, data evaluation, data analysis and presentation. METHODS: Four electronic databases were searched according to previously designed search strategies. The 14 retrieved articles were appraised using MMATs for quality. Data were extracted and analysed thematically. RESULTS: The findings of the integrative review revealed that registered nurses, licensed practical nurses and healthcare aides had little understanding about the roles of their fellow nursing team members and had difficulties describing their own roles. However, no studies concurrently examined registered nurses', licensed practical nurses' and healthcare aides' perceptions on their own or each other's roles and little were written about licensed practical nurses. CONCLUSION: More research is needed to examine the entire nursing team's perceptions about the various nursing roles.

Influence of Teamwork on Health Care Workers' Perceptions About Care Delivery and Job Satisfaction.

The aim of the current study was to examine the nature of teamwork in care facilities and its impact on the effectiveness of care delivery to older adults and job satisfaction among health care workers. A focused ethnography was conducted at two care facilities where older adults reside. Analysis of interviews with 22 participants revealed perceptions of teamwork and understandings about facilitators of and barriers to effective teamwork. Participants indicated that team relationships impacted care provided and job satisfaction. Participants also identified trust and reciprocity, communication, and sharing a common goal as critical factors in effective teamwork. In addition, participants identified the role of management as important in setting the tone for teamwork. Future research is needed to understand the complexity of supporting teamwork in residential settings given the challenges of culture, diversity, and individuals working multiple jobs. [Journal of Gerontological Nursing, 44(4), 37-44.].