Viability of nerve grafts preseved in different storage medium

We compared the structural features of nerve segments stored in two different solutions previous and after autologous transplantation. Male Wistar rats were divided into groups to obtain normal tibial nerves, freshly transplanted nerves, and nerves stored in Wisconsin/Belzer or Collins solution for 24 or 72 h at 4ºC and transplanted. Stored and transplanted segments were processed for morphologic and morphometric analysis. The cross-sections of segments stored in Wisconsin/Belzer and Collins solution presented aspects similar to that of normal nerves. The density of large-caliber myelinated axons was higher in grafts stored in Wisconsin/Belzer solution than in those preserved in Collins solution. But the density of myelinated axons regenerated through these grafts was around 80% to that registered in the fresh and Wisconsin/Belzer preserved grafts. Moreover, no significant differences in the morphometric parameters were observed between groups. Our data confirm the efficacy of Wisconsin/Belzer to nerve graft preservation and stimulate more detailed physiological, biochemical and molecular studies to rationalize the employment of less expensive and handful storage solutions for short term preservation of peripheral nerve grafts.

O que os psiquiatras brasileiros esperam das classificações diagnósticas? / What do Brazilian psychiatrists want from diagnostic classifications?

OBJETIVO: Realizou-se um levantamento postal anônimo com psiquiatras brasileiros afiliados à Associação Brasileira de Psiquiatria (ABP) sobre uso, percepção em termos de utilidade clínica dos sistemas diagnósticos multiaxiais CID-10 e DSM-IV e, ainda, expectativas sobre as próximas revisões. MÉTODOS: A carta-convite, o questionário padronizado e um envelope selado foram enviados para 1.050 dos 3.062 psiquiatras associados da ABP, selecionados de forma randomizada. Em virtude da taxa relativamente baixa de retorno: 160 respostas (15,2 por cento), não se pode afirmar que a amostra obtida seja representativa. resultados: Os principais resultados mostraram que, entre os respondentes, a CID-10 é o sistema diagnóstico mais utilizado, sobretudo seu eixo clínico. O DSM-IV também é amplamente empregado, principalmente os eixos I e II. A principal característica esperada de um sistema classificatório foi a confiabilidade para comunicação. As classificações são vistas como instrumentos a ser manejados pelos psiquiatras e, em menor proporção, por outros membros de equipes multidisciplinares de saúde mental. Os atuais sistemas foram considerados confiáveis para o uso transcultural no contexto brasileiro. Em relação às expectativas quanto aos futuros sistemas, os psiquiatras preferem classificações com menos de 100 rubricas diagnósticas e dividem-se entre os que acham que estas devam expressar preferencialmente causa/patogênese dos transtornos mentais e aqueles que esperam que tais categorias, sobretudo, sejam construídas de modo a subsidiar o planejamento terapêutico. CONCLUSÕES: Os sistemas diagnósticos desempenham um importante papel na prática psiquiátrica cotidiana dos psiquiatras respondentes. As opiniões dos psiquiatras brasileiros parecem refletir bem algumas controvérsias existentes acerca de questões nosográficas decisivas.

OBJECTIVE: An anonymous mail survey was carried out with Brazilian psychiatrists affiliated with Brazilian Psychiatric Association (ABP). A structured questionnaire was employed to assess use and perceived utility of current diagnostic classifications (ICD-10 and DSM-IV), as well as their expectations about the future revisions. METHODS: From the mailing list provided by ABP with 3,062 names of affiliated Brazilian psychiatrists, 1,050 were randomly selected to receive the questionnaire, along with a stamped, return address envelope. From the sample of 1,050, 160 completed questionnaires were returned, which corresponds to the following rate of response: 15.2 percent. No claims are made about the representativeness of the sample. RESULTS: It was found that the ICD-10 is the most frequently used system, especially its clinical axis. The DSM-IV's axes I and II are often used as well. For this sample the most important purpose of a classification is to ensure reliable inter-clinician communication. Classifications are seen as tools for psychiatric use and, to a lesser extent, for the use of a multidisciplinary team. Current diagnostic systems are perceived as reliable for cross-cultural use in our context. Regarding expectations about the future revisions, Brazilian psychiatrists prefer simpler classifications, with less than 100 diagnostic labels. They split, however, about having separate systems to account for cause/pathogenesis and to inform treat ment plans or a single classification, with many compromises, to convey information concerning causes, prognosis and treatment decisions. CONCLUSIONS: Classificatory systems play an important role in everyday psychiatric clinical practice in this sample of psychiatrists. Brazilian psychiasystems. trists' opinions seem to reflect well existing controversies regarding some key nosographic issues.