RESUMO
OBJECTIVES: The objective of this study was to compare the major transplant outcomes between patients receiving hematopoietic stem cell transplantation (HSCT) from bone marrow (BM) or peripheral blood stem cells (PBSC). METHODS: All consecutive HSCT patients using BM or PBSC from an HLA-matched related donors for haematological malignancies after high intensity conditioning at seven Brazilian transplant centres between January 2008 and December 2009 were retrospectively evaluated. RESULTS: In the study period, 334 patients were treated in the centres and included in the evaluation. The cumulative incidence of grades II-IV and III-IV acute graft-versus-host disease (GVHD) at one year was 36.7% and 9.7% for BM recipients and 34.4% and 15.1% for PBSC recipients, respectively (not statistically different). The cumulative incidence of chronic GVHD at three years was 53.7% and 79.8% (HR 1.93; 95% CI 1.38-2.69, P < 0.001) for BM and PBSC, respectively. Median overall survival was 2.85 and 2.39 years for BM and PBSC recipients, respectively (HR 1.19; 95% CI, 0.84-1.68, P = 0.34). CONCLUSIONS: Our results confirm previous findings of increased chronic GVHD incidence in patients receiving PBSC when compared to patients receiving BM as the graft source in HSCT. Acute GVHD incidence, progression-free survival and overall survival were not different between the groups.
Assuntos
Transplante de Medula Óssea , Doença Enxerto-Hospedeiro/mortalidade , Neoplasias Hematológicas/mortalidade , Neoplasias Hematológicas/terapia , Transplante de Células-Tronco de Sangue Periférico , Doadores de Tecidos , Adolescente , Adulto , Idoso , Aloenxertos , Criança , Pré-Escolar , Intervalo Livre de Doença , Feminino , Seguimentos , Doença Enxerto-Hospedeiro/etiologia , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Taxa de SobrevidaRESUMO
Introdução: a influência da infecção do sistema nervoso central no neurodesenvolvimento da criança com infecção pelo HIV-1 merece melhor compreensão. Objetivo: identificar as desordens neurológicas da infecção pelo HIV-1 em crianças e analisar possíveis fatores associados. Métodos: revisão de mais de 100 artigos recentemente publicados na literatura médica nacional e internacional referentes à patogênese da neuro-aids e sua implicação no desenvolvimento neurológico da criança com infecção pelo HIV-1. Resultados: o HIV-1 penetra precocemente no sistema nervoso central (SNC) e seu acometimento pode representar a manifestação inicial da aids em até 18% das crianças infectadas. Na neuropatogênese da aids na criança, destacam-se as interações virais com astrócitos. A diferença nos níveis de citocinas no líquor e a infecção ativa de neurônios são as principais diferenças da infecção do SNC pelo HIV-1 quando comparada com adultos. Após a era HAART, os quadros de encefalopatia diminuíram significativamente, permanecendo as alterações no neurodesenvolvimento, cuja prevalência varia de 8% a mais de 60%. Demonstra-se a associação com a gravidade da infecção, idade da criança, mas também com regimes de HAART eficientes. Os diferentes trabalhos analisados apresentam resultados contraditórios quanto à influência de fatores de risco no neurodesenvolvimento de crianças infectadas pelo HIV-1. Conclusão: os mecanismos da neuropatogênese da infecção pelo HIV são extremamente complexos e ainda pouco compreendidos. Ostrabalhos apontam que atraso no neurodesenvolvimento pode ser importante indicador de progressão da doença. Identificar precocemente, por meio de instrumentos de avaliação de neurodesenvolvimento, sinais associados a desordens do SNC em crianças infectadas pelo HIV-1 é essencial.
Introduction: the influence of the infection of the central nervous system in the neurodevelopment of the child infected with HIV-1 deserves better understanding. Objective: to evaluate neurological disorders in HIV-1 infected children and possible associated factors. Methods: review of more than 100 papers published recently in national and international medical literature concerning neuropathogenesis of AIDS and its influence in the neurological development of HIV infected children. Results: HIV-1 invades the central nervous system (CNS) early in infection and is the first AIDS-defining illness in as many as 18% of pediatric patients. In the neuropathogenesis of AIDS in children we must stress the viral interactions with astrocytes. Differences in the level of proinflammatory mediators in the cerebrospinal fluid (CSF), and the productive infection of neurons are the main differences in children. The reported prevalence of delay in neurodevelopment among HIV-infected children has varied from 8% to more than 60%. An increased prevalence is associated with the severity of the infection, increasing age, but also occur with children with efficient HAART regimens. Papers selected have distinct conclusions in relation to the risk factors associated with neurodevelpmental delays of HIV infected children. Conclusion: the molecular and cellular mechanisms of the neuropathogenesis of HIV-1 infection are extremely complex and not well understood. Neurodevel pmental delay is clearly associated with HIV-1 infection in children and can be an important indicator of the infection evolution. It is essential to idenfity, using neurodevelopmental assessment tools, early warning signs of HIV-1 associated neurological disorders in infected children.