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1.
Biol Proced Online ; 22: 17, 2020.
Article in English | MEDLINE | ID: mdl-32765191

ABSTRACT

BACKGROUND: Improper regulation of apoptosis has been postulated as one of the main factors that contributes to the etiology and/or progression of several prevalent diseases, including ischemic stroke and neurodegenerative pathologies. Consequently, in the last few years, there has been an ever-growing interest in the in vivo study of apoptosis. The clinical application of the tissue sampling and imaging approaches to analyze apoptosis in neurological diseases is, however, limited. Since apoptotic bodies are membrane vesicles that are released from fragmented apoptotic cells, it follows that the presence of these vesicles in the bloodstream is likely due to the apoptotic death of cells in tissues. We therefore propose to use circulating apoptotic bodies as biomarkers for measuring apoptotic death in patients with ischemic stroke and neurodegenerative diseases. RESULTS: Since there is no scientific literature establishing the most appropriate method for collecting and enumerating apoptotic bodies from human blood samples. Authors, here, describe a reproducible centrifugation-based method combined with flow cytometry analysis to isolate and quantify plasma apoptotic bodies of patients with ischemic stroke, multiple sclerosis, Parkinson's disease and also in healthy controls. Electron microscopy, dynamic light scattering and proteomic characterization in combination with flow cytometry studies revealed that our isolation method achieves notable recovery rates of highly-purified intact apoptotic bodies. CONCLUSIONS: This easy, minimally time consuming and effective procedure for isolating and quantifying plasma apoptotic bodies could help physicians to implement the use of such vesicles as a non-invasive tool to monitor apoptosis in patients with cerebrovascular and neurodegenerative diseases for prognostic purposes and for monitoring disease activity.

2.
Rev. bras. oftalmol ; 62(1): 29-33, jan. 2003. tab
Article in Portuguese | LILACS | ID: lil-341947

ABSTRACT

Objetivo: Os autores usaram o agente anti-neoplásico Mitomicina a 0,02 por cento na forma de colírio após a exerese cirúrgica para a prevenção da recidiva do pterígio recorrente e pterígio primário. Material e Método: O colírio de Mitomicina a 0,02 por cento foi empregado de 12/12 horas em vinte três olhos com pterígio recorrente e trinta e sete olhos com pterígio primário por sete dias, iniciando o tratamento 24 horas após a retirada do pterígio. Resultados: A taxa de sucesso foi de 100 por cento no período de acompanhamento pós-operatório médio de 11,5 meses nos pterígios recidivados e nos pacientes com pterígio primário tivemos apenas uma recidiva após um período de acompanhamento de 12 meses. Os efeitos colaterais mais freqüentes e prováveis do colírio de Mitomicina a 0,02 por cento foram: edema palpebral, dor ocular, injeção conjuntival e fotofobia. Estes efeitos colaterais foram de intensidade baixa e desapareceram em duas semanas e podem ser provocados pelo ato cirúrgico isoladamente. Dois olhos com pterígio recidivado e sete olhos com pterígio primário desenvolveram granuloma piogênico quatro semanas após a cirurgia. Conclusão: Os autores acreditam que o colírio de Mitomicina a 0,02 por cento seja um tratamento eficaz, simples e seguro para o tratamento do pterígio recidivado e pterígios primários.


Subject(s)
Humans , Adult , Middle Aged , Mitomycin , Postoperative Care , Pterygium
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