Biological and clinical correlates after chemotherapy and granulocyte colony-stimulating factor administration.
Pharmacotherapy
; 18(1): 1-8, 1998.
Article
em En
| MEDLINE
| ID: mdl-9469674
ABSTRACT
STUDY OBJECTIVE:
To evaluate specific biological markers to improve understanding and use of granulocyte colony-stimulating factor (G-CSF) in patients receiving chemotherapyDESIGN:
Prospective, randomized study.SETTING:
University-affiliated hospital and cancer center. PATIENTS Twenty-five patients randomized to begin G-CSF either 24 hours after chemotherapy (standard arm), or on the day the absolute neutrophil count (ANC) was below 1000/mm3 after chemotherapy (delayed arm).INTERVENTIONS:
To determine the effect of G-CSF on granulopoiesis, peripheral blood mononuclear cells were assayed by semisolid culture medium and flow cytometry for granulocyte progenitors and clonogenic CD34 antigen-positive cells. These biological markers were correlated with G-CSF administration schedules and the ANC. MEASUREMENTS AND MAINRESULTS:
The effect of timing of G-CSF administration on rate of neutrophil recovery, duration of neutropenia, length of G-CSF therapy, delays of chemotherapy cycles, and neutropenic fever events was evaluated. Regardless of G-CSF schedule or chemotherapy regimen, the appearance of mobilized hematopoietic progenitors begins at the neutrophil nadir and parallels granulocyte recovery. Our data also demonstrate that proper timing of G-CSF administration produces similar rates of neutrophil recovery and comparable clinical outcomes.CONCLUSION:
Based on the correlation between biological markers and ANC, we propose that the postchemotherapy ANC is a surrogate marker of renewed granulopoietic activity. The relevance of this finding in relationship to the clinical application of G-CSF remains to be further defined.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fator Estimulador de Colônias de Granulócitos
/
Antígenos CD34
/
Neoplasias
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Neutropenia
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Neutrófilos
/
Antineoplásicos
Tipo de estudo:
Clinical_trials
/
Observational_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
1998
Tipo de documento:
Article