Recombinant-activated coagulation factor VIIa (NovoSeven): current development

Recombinant activated coagulation factor VII (rFVIIa) was developed initially for treatment of patients with hemophilia and neutralizing antibodies ("inhibitors") to coagulation factors VIII or IX. Owing to the unique and selective mechanism of action of rFVIIa and encouraged by clinical experience with other circumstances of inadequate hemostasis, a broad development program has been pursued to test potential efficacy and evaluate safety of this biologic for indications other than hemophilia. This review summarizes the current development of rFVIIa, focusing on results of prospective, randomized clinical trials.     

Nurses' experience of caring for inmate patients

AIM: The aim of this paper is to report the findings of a study of the experience of caring for prisoners through examining the everyday experience of nurses' delivering health care to inmate patients in a correctional setting. BACKGROUND: Prisons are most often viewed as places for punishment, while the goals of health and healing, and prevention of diseases in correctional facilities are often neglected. Nurses who deliver health care to prisoners are challenged to do so in a caring relationship that will facilitate their health and healing. The literature on the nature of prison nursing indicates that delivering health care to inmates must be carefully balanced against the need for security, and is affected by factors such as custody staff values, staff education, nursing management, and organizational practices. METHOD: In-depth interviews were carried out with nine Registered Nurses who had been employed in a variety of correctional institutions throughout their careers, and analysed thematically using Colaizzi's phenomenological method. Findings. Nurses' caring was experienced as an attempt to negotiate the boundaries between the cultures of custody and caring. Facing complex challenges and a number of limitations on the nurse-patient relationship, nurses strived to find a way to care for their inmate patients. Environmental risk meant that caution and vigilance were essential and these nurses demonstrated courage and persevered for the sake of their inmate patients. CONCLUSION: The findings make clear the challenging and frustrating experience of nurses' caring for inmate patients in restrictive settings. As a result, there are implications for nursing practice, education, and research to assure the best possible health outcomes for inmate patients, the integrity of caring nursing practice, and the safety of both nurses and patients.     

Chediak-Higashi gene in humans. I. Impairment of natural - killer function

Natural-killer (NK)-cell function was profoundly depressed in donors homozygous for the Chediak-Steinbrinck-Higashi syndrome (C-HS) gene when compared with age- and sex-matched normals. This apparent defect was not simply a result of a delayed response because little cytolysis was evident in kinetics experiments even after 24 h of incubation. NK cells from C-HS donors failed to lyse adherent (MDA, CEM, and Alab) or nonadherent (K562 and Molt-4) tumor cell lines or nontransformed human fetal fibroblasts. Therefore, the apparent C-HS defect was not a result of a shift in target selectivities. In addition, the depressed reactivity did not appear to be a result of suppressor cells or factors because: (a) enriched NK populations (nonadherent lymphocytes bearing receptors for the Fc portion of IgG) from C-HS donors were low in NK-cell function, (b) C-HS mononuclear cells did not inhibit the cytotoxicity of normal cells in coculture experiments, and (c) cells from the C-HS donors remained poorly reactive even after culture for up to 7 d. The nature of the defective NK activity in C-HS patients is not clear but may lie within the lytic mechanism rather than at the level of the recognition structure or population size because the frequency of target-binding cells was normal. In vitro NK activity could be partially restored by interferon treatment. Combined with the results presented in the following paper (4), these observations suggest that the C-HS gene causes a selective immunodeficiency disorder, mainly involving NK cells. This finding, in conjunction with the high incidence of spontaneous possibly malignant, lymphoproliferative disorders in these patients, may have important implications regarding the theory of immune surveillance mediated by NK cells.