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Type: Artigo de periódico
Title: Hematopoietic progenitor cells (HPC) and immature reticulocytes evaluations in mobilization process: New parameters measured by conventional blood cell counter
Author: Noronha, JFA
Lorand-Metze, IGH
Grotto, HZW
Abstract: Monitoring the timing of leukapheresis in peripheral blood stem cells (PBSC) mobilization is an important clinical decision that requires an accurate analytical tool. The present study assessed hematopoietic progenitor cells (HPC) and immature reticulocyte fraction (IRF) counts provided by a routine automated blood counter as potential parameters for predicting the appropriate time for harvesting. The HPC and IRF values were compared with white blood cell (WBC) and CD34+ cell counts obtained by flow cytometry in 30 adult patients with hematological malignancies undergoing PBSC mobilization. It was observed that there was a significant correlation between HPC counts and CD34+ cells in peripheral blood counts (r = 0.61, P = 0.0003) and between the number of HPC and CD34+ cells collected by leukapheresis (r = 0.5733, P = 0.0009). Comparing HPC, IRF, WBC, and CD34+ cells parameters as a sign of hematological recovery showed that the raise in immature reticulocytes counts preceded the increase of WBC (P = 0.0002), HPC (P = 0.0001), and CD34+ (P = 0.0001) cells in peripheral blood counts. According to our results, HPC and IRF parameters may be integrated into clinical protocols to evaluate the timing of leukapheresis. IRF, as previously demonstrated in bone marrow transplantation, is the earliest sign of hematopoietic recovery in mobilization process.
Subject: hematological malignancies
peripheral blood stem cell mobilization
hematopoietic progenitor cell
immature reticulocytes
Country: EUA
Editor: Wiley-liss
Citation: Journal Of Clinical Laboratory Analysis. Wiley-liss, v. 20, n. 4, n. 149, n. 153, 2006.
Rights: fechado
Identifier DOI: 10.1002/jcla.20123
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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