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Individualized leukapheresis of hematopoietic cells for cellular therapies /Mårtensson, Anna. January 2005 (has links)
Lic.-avh. (sammanfattning) Stockholm : Karol. inst., 2005. / Härtill 3 uppsatser.
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Mobilização e coleta de CD34+ para transplante autólogo de células progenitoras periféricas hematopoiética em pediatria : análise de duas doses diferentes de G-CSF / Mobilization and collection of CD34+ cells for autologous transplantation of peripheral blood hematopoietic progenitor cells in children : analysis of two different G-CSF dosesEid, Katia Aparecida de Brito, 1964- 27 August 2018 (has links)
Orientador: Simone dos Santos Aguiar / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas / Made available in DSpace on 2018-08-27T08:24:49Z (GMT). No. of bitstreams: 1
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Previous issue date: 2015 / Resumo: Introdução: As células progenitoras periféricas hematopoiéticas (CPHP) é uma das alternativas de enxerto para a realização de transplante autólogo em crianças, adolescente e adulto jovem portadores de tumores sólidos e linfomas. Na mobilização, a dose clássica de G-CSF é 10µg/kg/peso do paciente SC em dose única. Acredita-se que doses maiores de G-CSF aplicadas duas vezes ao dia aumentariam o número de CD34+ coletadas com o menor número de leucaféreses. A tecnologia atual permite que seja realizado leucaférese em crianças com baixo peso (<10 kg). Objetivo: o mote do estudo foi avaliar se o G-CSF na dose de 15µg/kg peso do paciente ao dia e fracionado em duas doses, 10µg/kg e 5µg/kg, diminuiria o número de leucaférese realizada para atingir o mínimo de 3x106/kg/peso do paciente de CD34+ quando comparada com G-CSF na dose convencional, 10µg/kg/peso do paciente em dose única. Métodos: Os pacientes foram divididos em dois grupos. Grupo 10 formado por pacientes que receberam G-CSF 10µg/kg/peso SC ao dia em dose única às 6h e grupo 15 formado por pacientes que receberam G-CSF 15µg/kg/peso SC ao dia dividido em duas vezes, 10µg/kg SC às 6h e 5µg/kg SC às 18h. As leucaféreses foram realizadas em um separador celular automático de fluxo contínuo com anticoagulante ACD-A, foram processados 4 volemias em cada leucaférese. Pacientes com < 20 kg receberam priming de concentrado de hemácias filtradas e irradiadas (CHFI) durante as leucaféreses. A realização do transplante autólogo ocorreu com o número mínimo de 3x106/kg/peso de CD34+. Resultados: Sessenta e cincos pacientes portadores de tumores sólidos e linfomas foram avaliados, 39 pacientes receberam 10µg/kg/peso SC ao dia em dose única às 6h de G-CSF e 26 pacientes receberam 10µg/kg SC às 6h e 5µg/kg SC às 18h de G-CSF. Foram realizadas 146 leucaféreses, 110 (75,3%) no grupo 10 e 36 (24,7%) leucaféreses no grupo 15. No grupo 10 foi obtido uma mediana de 3 (1-7) leucaféreses e coletado uma média de 8,89x106/kg (± 9,59) de CD34+, o grupo 15 realizou uma mediana de 1 (1-3) leucaféreses e coletado uma média de 5,29x106/kg (± 4,95) de CD34+. Uma diferença estatística importante foi o número de leucaféreses (p<0,0001). Nenhum paciente apresentou intercorrências durante as leucaféreses. Os pacientes que receberam CHFI (<20 kg) não apresentaram hipovolemia nas leucaféreses realizadas. Conclusão: Para coletar o mínimo de 3x106/kg/peso de CD34+, a aplicação de G-CSF 15µg/kg/peso fracionada diminuiu significativamente o número de leucaférese realizada / Abstract: Introduction: The peripheral hematopoietic progenitor cells are a graft choice for performing autologous transplantation. In the mobilization, the classical dose of G-CSF is 10?g/kg of the patient in a single dose. There is a theory that higher doses of G-CSF applied twice daily could increase the number of collected CD34+ cells with a smallest number of leukapheresis. Objective: The aim of this study is to evaluate if a fractionated-dose of G-CSF at 15?g/kg of patient may reduce the number of leukapheresis for achieving the minimum target of 3 x 106/kg of CD34+ cells as compared to conventional dose of G-CSF. Methods: Patients were divided into two groups. Group 10: patients who received a single dose daily of G-CSF 10?g/kg and Group 15: patients who received twice dose daily of G-CSF 15?g/kg. The leukapheresis were processed in an automated cell separator. The autologous transplantation happened when the minimum number of 3x106/kg CD34+ was reached. Results: Group 10 enrolled 39 patients who received 10?g/kg of G-CSF and group 15 had 26 patients who received 15?g/kg fractionated of G-CSF. There were a total of 146 aphaeresis; 110 (75.3%) in group 10 and 36 (24.7%) group 15. Group 10 collected a median of 3 (1-7) leukapheresis and a mean of 8.89 x106/kg (± 9.59) CD34+, whereas group 15 had a median of 1 (1-3) leukapheresis and collected a mean of 5.29 x106/kg (± 4.95). The relevant difference statistic was the number of aphaeresis (p<0.0001). Conclusion: To collect a minimum target of 3x106/kg of CD34 +, the application of fractionated-dose of 15?g/kg G-CSF decreased significantly the number of leukapheresis performed / Doutorado / Saude da Criança e do Adolescente / Doutora em Ciências
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G-CSF in Healthy Allogeneic Stem Cell DonorsHölig, Kristina 05 August 2020 (has links)
Mobilization of peripheral blood stem cells (PBSC) in healthy volunteers with granulocyte colony-stimulating factor (G-CSF) is currently carried out at many institutions worldwide. This report presents the experience of the Dresden center regarding donor evaluation and mobilization schedule. Data regarding efficacy, short- and long-term safety of G-CSF treatment gained from 8290 PBSC collections in healthy donors are outlined. These results are discussed against the background of the available evidence from the literature. Although established as a standard procedure, G-CSF application to allogeneic donors will always be a very delicate procedure and requires the utmost commitment of all staff involved to ensure maximum donor safety. (PBSC) donation does not require hospitalization and is generally assumed to be less physically demanding for the donor. However, application of mobilizing agents is stringently required for successful HSC mobilization. The standard substance, which is almost exclusively used in healthy donors worldwide, is recombinant human granulocyte colony-stimulating factor (rhG-CSF). Two preparations – filgrastim and lenograstim – are available and have been approved for PBSC mobilization for about 15 years in Germany. Currently, more than 20,000 healthy donors worldwide receive rhG-CSF for PBSC mobilization every year [7]. At the Dresden University Hospital, PBSC collections have been performed since 1996. In the two collection facilities associated with the university hospital, 8,290 allogeneic PBSC collections from 8,005 donors (i.e. 285 second collections) have been documented in a database up until May 2012. This paper presents the data of our own group, and summarizes the current knowledge regarding the short- and long-term effects of G-CSF treatment in healthy stem cell donors.
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