Nurse assistants' perception of caring for older persons who are dying in their own home : An interview study.

BACKGROUND: As the proportion of older persons in society increases, there is a growing trend towards providing end-of-life care in their homes. Palliative care is a complex and knowledge-demanding form of care, and nurse assistants are those who work closest to the older person at the end-of-life in their own homes. However, nurse assistants sometimes have low educational and insufficient levels of knowledge in palliative care, which can affect the quality of care they provide. Moreover, nurse assistants' experiences are relatively unexplored in this context. The purpose of the study was to illuminate nurse assistants' experiences in caring for dying older persons at home. METHOD: An empirical, qualitative interview study was conducted with 14 nurse assistants with experience of palliative care in homecare. The material was analyzed using thematic content analysis. RESULTS: From the nurse assistant's experiences, one main theme emerged: doing everything possible for the dying older person despite challenges. Moreover, three sub-themes emerged: making a difference at a crucial time, death awakens emotions, and balancing personal and professional relationships. The nurse assistants' saw their role primarily as relieving symptoms but also focusing on next of kin. The following are described as essential parts of their role: carrying out practical nursing tasks, focusing on the physical environment, working alone and seeking help from colleagues due to a physical distance to the other members of the multidisciplinary team. The nurse assistants experienced a lack of support as there was no structured guidance or debriefing available in difficult emotional situations. Furthermore, they disclosed that they were left alone to deal with their feelings. CONCLUSION: This study demonstrates that nurse assistants strive to provide comprehensive care for dying older persons despite facing obstacles from their working conditions and work organization. They lack supervision and education in palliative care, but they rely on their experience-based knowledge to a large extent and provide care according to the four cornerstones of palliative care.

Design, synthesis, and computational affinity prediction of ester soft drugs as inhibitors of dihydrofolate reductase from Pneumocystis carinii.

A series of dihydrofolate reductase (DHFR) inhibitors, where the methylenamino-bridge of non-classical inhibitors was replaced with an ester function, have been prepared as potential soft drugs intended for inhalation against Pneumocystis carinii pneumonia (PCP). Several of the new ester-based inhibitors that should serve as good substrates for the ubiquitous esterases and possibly constitute safer alternatives to metabolically stable DHFR inhibitors administered orally, were found to be potent inhibitors of P. carinii DHFR (pcDHFR). Although the objectives of the present program is to achieve a favorable toxicity profile by applying the soft drug concept, a high preference for inhibition of the fungal DHFR versus the mammalian DHFR is still desirable to suppress host toxicity at the site of administration. Compounds with a slight preference for the fungal enzyme were identified. The selection of the target compounds for synthesis was partly guided by an automated docking and scoring procedure as well as molecular dynamics simulations. The modest selectivity of the synthesized inhibitors was reasonably well predicted, although a correct ranking of the relative affinities was not successful in all cases.

Design and synthesis of dihydrofolate reductase inhibitors encompassing a bridging ester group. Evaluation in a mouse colitis model.

Crohn's disease is a chronic inflammatory bowel disease characterized by inflammation of both the small and large intestines. Methotrexate (MTX), a classical dihydrofolate reductase (DHFR) inhibitor, has been used as a therapeutic agent in the treatment of patients with Crohn's disease in recent years. We sought to develop antifolates similar in structure to MTX that would be effective in reducing inflammation in a mouse disease model of colitis. Four classical DHFR inhibitors encompassing ester bridges in the central parts of the molecules were synthesized. These antifolates were efficient inhibitors of the DHFR enzyme derived from rat. They were also tested in vitro for their ability to inhibit induced proliferation of lymphocytes from mouse spleen. Inhibition of cell proliferation was achieved only in the micromolar range, whereas MTX was effective at low nanomolar concentrations. One of the DHFR inhibitors (1), with an IC(50) value for rlDHFR approximately 8 times higher than that of methotrexate, was selected for in vivo experiments in an experimental colitis model in mice. This compound demonstrated a clear antiinflammatory effect after topical administration, comparable to the effect achieved with the glucocorticoid budesonide. Three parameters were evaluated in this model: myeloperoxidase activity, colon weight, and inflammation scoring. A favorable in vivo effect of compound 1 (15 mg/(kg.day)) was observed in all three inflammatory parameters. However, the results cannot be explained fully by DHFR inhibition or by inhibition of lymphocyte cell proliferation, suggesting that other yet unidentified mechanisms enable reduction of inflammation in the colitis model. The mechanism of action of methotrexate analogues encompassing a bridging ester group is not well understood in vivo but seems to lend itself well to further development of similar compounds.