Quality of palliative and end-of-life care: a quantitative study of temporal trends and differences according to illness trajectories in Quebec (Canada).

BACKGROUND: Our aim was to assess temporal trends and compare quality indicators related to Palliative and End-of-Life Care (PEoLC) experienced by people dying of cancer (trajectory I), organ-failure (Trajectory II), and frailty/dementia (trajectory III) in Quebec (Canada) between 2002 and 2016. METHODS: This descriptive population-based study focused on the last month of life of decedents who, based on the principal cause of death, would have been likely to benefit from palliative care. Five PEoLC indicators were assessed: home deaths (1), deaths in acute care beds with no PEoLC services (2), at least one Emergency Room (ER) visit in the last 14 days of life (3), ER visits on the day of death (4) and at least one Intensive Care Unit (ICU) admission in the last month of life (5). Data were obtained from Quebec's Integrated Chronic Disease Surveillance System (QICDSS). RESULTS: The annual percentage of home deaths increased slightly between 2002 and 2016 in Quebec, rising from 7.7 to 9.1%, while the percentage of death during a hospitalization in acute care without palliative care decreased from 39.6% in 2002 to 21.4% in 2016. Patients with organ failure were more likely to visit the ER on the day of death (20.9%) than patients dying of cancer and dementia/frailty with percentages of 12.0% and 6.4% respectively. Similar discrepancies were observed for ICU visits in the last month and ER visits in the last 14 days. CONCLUSION: PEoLC indicators showed more aggressiveness of care for patients with organ failure and highlight the need for more equitable access to quality PEoLC between malignant and non-malignant illness trajectories. These results underline the challenges of providing timely and optimal PEoLC.

'Intensive palliative care': a qualitative study of issues related to nurses' care of people with amyotrophic lateral sclerosis at end-of-life.

Background: Amyotrophic lateral sclerosis (ALS) is currently an incurable and fatal disease, which often comes with a high symptom burden at the end-of-life stage. Little is known about nurses' experiences in this context. Objective: To explore the experience of nurses caring for people with ALS at end-of-life. Design: A qualitative multiple-case study design. Method: Individual semi-structured interviews were conducted between February and August 2022 with nurses from Quebec, Canada, who had provided care to at least one person living with ALS at the end-of-life in the past 12 months. The content analysis method was used for data analysis and within-case and cross-case analyses were conducted, as well as comparative analyses according to the type of position held by the participants that determined the cases: (1) home care, (2) hospital and (3) palliative care home. Results: Participating in the study were 24 nurses: 9 were from home care, 8 from hospitals and 7 from palliative care homes. Five main themes were identified: (1) identifying the end-of-life period, (2) communication issues, (3) supporting the need for control, (4) accompanying in the fight culture and (5) the extent of the need for care. A sixth theme was also added in order to report the need expressed by nurses to improve their care of patients living with ALS at end-of-life. Conclusions: Although nurses' experiences varied among the different settings, the study identifies the pressing need for better education and, above all, more resources when caring for a person living with ALS at end-of-life. Future research should explore the experiences of other members of the healthcare team and test interventions designed to improve the quality of life and end-of-life of people living with ALS.

Emerging Despite the Indelible Wound: A Grounded Theory of Family Transformation Following Adolescent Suicide.

Family members of a person who has died by suicide are at an increased risk of experiencing depression, post-traumatic stress disorder, suicide ideation, and suicide. However, despite the experience of losing a family member to suicide, most families continue to function and even live well following this difficult experience. This study sought to understand and describe the transformation process that occurs in family member survivors using a grounded theory approach. Seven families, who experienced the loss of an adolescent in their family by suicide, participated in this qualitative study that used a grounded theory methodology. The results describe the transformation process experienced by the family, one of growth and learning, even though the wound from their tragic loss was still present. According to the grounded theory developed in this study, the suicide is a cataclysm, followed by a sinking period that is tempered by the presence of lifebuoys, which are supports that can be found within the families or from people around them. It is necessary for family nurses to understand this transformation process to better support surviving family members and improve suicide postvention care.

PhD nursing students' changing needs relative to the comprehensive doctoral examination.

Most doctoral curriculums in Canada and in the United States include a mandatory comprehensive examination (CE) meant to evaluate, after a year, the students' ability to conduct research. Although the format differs between faculties, the CE has nevertheless been described by students as anxiety provoking because in most cases, a failure terminates doctoral training. A lack of scientific literature on the experiences of PhD nursing students with the CE motivated us to explore these experience and the students' needs with regard to this exam. For that purpose, a descriptive qualitative research study was conducted at a nursing faculty in Canada. Focus groups and individual semi-directed interviews were conducted with 15 PhD nursing students. Data analysis suggests that PhD nursing students' needs evolve throughout their doctoral studies. Initially, their needs focus on understanding the general process of the CE, such as its purpose and the possible outcomes. These needs gradually shift toward specific issues, such day-to-day organization during the CE. Finally, participants express frustration about variability in the support received and in the evaluation process. Results offer insights into strategies that can be implemented to optimize PhD nursing students' experience and to develop a feeling of support regarding the CE.

Theoretical and philosophical assumptions behind the concept of anticipatory grief.

Anticipatory grief is a concept commonly used by researchers and clinicians when talking about the experience before the death of a loved one. This article offers a critical perspective on the disciplinary, theoretical and philosophical foundations of three distinct and frequently used conceptualisations of anticipatory grief: Lindemann's, Rando's and one derived from sociology. Lindemann's perspective conceived anticipatory grief as an inevitable component of the grieving experience in the situation of impending death. Rando's perspective views anticipatory grief as a multidimensional experience that facilitates post-mortem mourning. The third perspective, offered by sociologists, defines anticipatory grief as an experience highly influenced by the social context of the individual. This review explains how these different perspectives influence research and concludes with a reflection for potential future research.

Antitumoral activity of camptothecin-loaded nanoparticles in 9L rat glioma model.

Camptothecin (CPT), a plant alkaloid, is a potent anticancer drug in cell culture studies but it is clinically inactive due to rapid hydrolysis under physiological conditions. The drug exists in two forms depending on the pH value, an active lactone form at pH below 5 and an inactive carboxylate form at basic pH and this is a reversible reaction. In this study, nanoparticulate delivery systems were developed with either amphiphilic cyclodextrins, poly(lactide-co-glycolide) or poly-ɛ-caprolactone in order to maintain the active lactone form and prevent the drug from hydrolysis. All nanoparticles were prepared with nanoprecipitation technique. Mean particle sizes were 130-280nm and surface charges were negative. The encapsulation efficiency was significantly higher for amphiphilic cyclodextrin nanoparticles when compared to polymeric nanoparticles. Nanoparticle formulations based on cyclodextrins showed a controlled release profile extended up to 12 days. 6-O-Capro-ß-cyclodextrin (1.44µg/60µL CPT) and concentrated 6-O-Capro-ß-cyclodextrin (2.88µg/60µL CPT) nanoparticles significantly modified the growth or lethality of the 9L gliomas, since the median survival time was 26 days for the untreated group and between 27 and 33 days for amphiphilic cyclodextrin nanoparticle groups. These results indicate that, CPT-loaded amphiphilic cyclodextrin nanoparticles may provide a promising carrier system for the effective delivery of CPT in comparison to polymeric analogues.

Targeted gene addition to human mesenchymal stromal cells as a cell-based plasma-soluble protein delivery platform.

BACKGROUND AIMS: Gene-modified mesenchymal stromal cells (MSC) provide a promising tool for cell and gene therapy-based applications by potentially acting as a cellular vehicle for protein-replacement therapy. However, to avoid the risk of insertional mutagenesis, targeted integration of a transgene into a 'safe harbor' locus is of great interest. METHODS: We sought to determine whether zinc finger nuclease (ZFN)-mediated targeted addition of the erythropoietin (Epo) gene into the chemokine [C-C motif] receptor 5 (CCR5) gene locus, a putative safe harbor locus, in MSC would result in stable transgene expression in vivo. RESULTS: Whether derived from bone marrow (BM), umbilical cord blood (UCB) or adipose tissue (AT), 30-40% of human MSC underwent ZFN-driven targeted gene addition, as determined by a combination of fluorescence-activated cell sorting (FACS)- and polymerase chain reaction (PCR)-based analyzes. An enzyme-linked immunosorbent assay (ELISA)-based analysis of gene-targeted MSC expressing Epo from the CCR5 locus showed that these modified MSC were found to secrete a significant level of Epo (c. 2 IU/10(6)cells/24 h). NOD/SCID/gammaC mice injected with ZFN-modified MSC expressing Epo exhibited significantly higher hematocrit and Epo plasma levels for several weeks post-injection, compared with mice receiving control MSC. CONCLUSIONS: These data demonstrate that MSC modified by ZFN-driven targeted gene addition may represent a cellular vehicle for delivery of plasma-soluble therapeutic factors.

Local delivery of ferrociphenol lipid nanocapsules followed by external radiotherapy as a synergistic treatment against intracranial 9L glioma xenograft.

PURPOSE: The goal of the present study was to evaluate the efficacy of a new organometallic drug, ferrociphenol (Fc-diOH), in combination with external radiotherapy in intracerebral 9L glioma model. We tested the hypothesis that the combination of external radiotherapy with Fc-diOH could potentiate the action of this drug. METHODS: 9L cells were treated with Fc-diOH-LNCs (from 0.01 to 1 micromol/L) and irradiated with external radiotherapy (from 2 to 40 Gy). In vivo assessment was evaluated by the inoculation of 9L cells in Fisher rats. Chemotherapy with Fc-diOH-LNCs (0.36 mg/rat) was administered by means of convection-enhanced delivery (CED), and the treatment was followed by three irradiations of 6 Gy doses (total dose = 18 Gy). RESULTS: In vitro evaluations evidenced that a combined treatment with Fc-diOH-LNCs and irradiations showed synergistic antitumor activity on 9L cells. Combining cerebral irradiation with CED of Fc-diOH-LNCs led to a significantly longer survival and the existence of long-term survivors compared to Fc-diOH-LNCs-treated animals (p < 0.0001) and to the group treated with blank LNCs + radiotherapy (p = 0.0079). CONCLUSION: The synergistic effect between ferrociphenol-loaded LNCs and radiotherapy was due to a closely oxidative relationship. Upon these considerations, Fc-diOH-LNCs appear to be an efficient radiosensitive anticancer drug delivery system.

The encapsulation of DNA molecules within biomimetic lipid nanocapsules.

Most of DNA synthetic complexes result from the self-assembly of DNA molecules with cationic lipids or polymers in an aqueous controlled medium. However, injection of such self-assembled complexes in medium like blood that differ from that of their formulation leads to strong instability. Therefore, DNA vectors that have physico-chemical properties and structural organisation that will not be sensitive to a completely different medium in terms of ionic and protein composition are actively sought. To this end, the goal here was to discover and optimize a nanostructured system where DNA molecules would be encapsulated in nanocapsules consisting in an oily core and a shell covered by PEG stretches obtained through a nanoemulsion process in the absence of organic solvent. This encapsulation form of DNA molecules would prevent interactions with external hostile biological fluid. The results show the entrapment of lipoplexes into lipid nanocapsules, leading to the formation of neutral 110 nm-DNA nanocapsules. They were weakly removed by the immune system, displaying an increased blood half-life, and improved carcinoma cell transfection, in comparison to the parent lipoplexes. Our results demonstrate that the fabrication of nanocapsules encapsulating hydrophilic DNA in an oily core that meet criteria for blood injection is possible.

Convection-enhanced delivery of nanocarriers for the treatment of brain tumors.

Primary brain tumors have a significant infiltrative capacity as their reappearance after resection usually occurs within 2cm of the tumor margin. Local delivery method such as Convection-Enhanced Delivery (CED) has been introduced to avoid this recurrence by delivering active molecules via positive-pressure methods. For an efficient infusion, the distribution volume of the drug has to be optimized while avoiding backflow, since this is responsible for side effects and a reduction of therapeutic efficacy. The encapsulation of the drug infused in nanosized structures can be considered, which would lead to a reduction of both toxicity of the treatment and infusion time during CED. In the present review, we will firstly discuss the technical approach of CED with regard to catheter design and brain characteristics; secondly, we will describe the 'ideal' nanocarrier in terms of size, surface properties, and interaction with the extracellular matrix for optimal diffusion in the brain parenchyma. We also discuss preclinical and clinical applications of this new method.

Lipid nanocapsules loaded with an organometallic tamoxifen derivative as a novel drug-carrier system for experimental malignant gliomas.

Ferrocenyl diphenol tamoxifen derivative (Fc-diOH) is one of the most active molecules of a new class of organometallic drugs, showing in vitro antiproliferative effects on both hormone-dependent and independent breast cancer cells. For the first time, Fc-diOH was tested on a 9L glioma model according to two encapsulation strategies: lipid nanocapsules (LNC) and swollen micelles. LNC showed a higher drug loading capacity because of a larger oily core in their structure and were able to be up taken by glioma cells. The large amount of PEG present at the micellar interface prevented interaction with cytoplasm membrane which led to a low level of micelle cell uptake and no biological activity. On the contrary, Fc-diOH cytostatic activity was conserved after its encapsulation in LNC and was very effective on 9L-glioma cells as the IC(50) was about 0.6 microM. Interestingly, Fc-diOH-loaded LNC showed low toxicity levels when in contact with healthy cells, conferring a functional specificity of this compound on tumour cells. Finally, Fc-diOH LNC treatment was able to lower significantly both tumour mass and volume evolution after 9L-cell implantation into rats which evidenced for the first time the in vivo efficacy of this new kind of organometallic compound.