The lived experience of psychosis in Nicaragua: a qualitative examination of the views of service users.

BACKGROUND: The experience of psychosis is individual and influenced by a complex intersection of identity, thought processes, perceptions and culture. Little is known about the lived experience of psychosis in Nicaragua. AIM: To explore the subjective experience of psychosis in Nicaragua from the perspectives of service users. METHODS: Focus groups with 28 service users with experience of psychosis. A qualitative analysis using both inductive and deductive approaches was used to analyse these data. RESULTS: Participants mostly attributed the onset of psychosis to external factors such as physical or psychological trauma and highlighted the impact of long-term conflict in the area. Whilst medication was generally viewed positively where this was available participants foregrounded lay and community support networks and engagement in valued activities in their narratives about the management of psychosis. Religious and magical forces were salient in participants' accounts of causal pathways, wider Nicaraguan culture and management practices. Stigma, social exclusion and limited access to formal health services and psychological interventions in particular were the major barriers reported to recovery from psychosis. CONCLUSION: Our findings point to the potential utility of culturally adapted psychological interventions in Nicaragua as well as the value of lay and community workforces in delivering such interventions.

Asparaginase immune complexes induce Fc-γRIII-dependent hypersensitivity in naive mice.

Asparaginase (ASNase) is an important drug for the treatment of leukemias. However, hypersensitivity to ASNase can increase the risk of leukemia relapse. Two mechanisms of ASNase hypersensitivity have been identified in mice. The existence of a pathway involving anti-ASNase IgG and Fc-γ receptor III (Fc-γRIII) implies that IgG and ASNase immune complexes (ICs) could directly induce hypersensitivity. The aim of this study was to detect ASNase ICs in mice after hypersensitivity reactions and determine their role in hypersensitivity. Protein G beads were used to detect plasma ASNase ICs by flow cytometry. Anti-ASNase IgG was purified from the plasma of sensitized mice, and ASNase ICs were prepared ex vivo at various ratios of ASNase to anti-ASNase IgG. The levels of ASNase ICs detected after hypersensitivity reactions correlated with reaction severity (R2 = 0.796; P = 0.0005). ASNase ICs prepared ex vivo required high levels of anti-ASNase IgG for formation, and binding to naive and sensitized immune cells depended on soluble anti-ASNase IgG, antigen:antibody ratio, and Fc-γRIII. Similarly, basophil activation by ASNase ICs depended on the antigen:antibody ratio and Fc-γRIII. Consistent with the ex vivo results, naive mice receiving ASNase ICs developed hypersensitivity reactions. Our data demonstrate that ASNase ICs can directly contribute to the onset and severity of ASNase hypersensitivity.-Rathod, S., Ramsey, M., DiGiorgio, D., Berrios, R., Finkelman, F. D., Fernandez, C. A. Asparaginase immune complexes induce Fc-γRIII-dependent hypersensitivity in naive mice.