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  • Title: The effects of short-term use of granulocyte colony-stimulating factor on bone metabolism in child cancer patients.
    Author: Turhan AB, Binay C, Bor O, Simsek E.
    Journal: North Clin Istanb; 2018; 5(4):277-281. PubMed ID: 30859156.
    Abstract:
    OBJECTIVE: The granulocyte colony-stimulating factor (G-CSF) is the most commonly used hematopoietic growth factor recombinant DNA technology. It affects bone metabolism by modulating both osteoclast and osteoblast functions. The aim of the present study was to investigate the effects of short-term use of G-CSF on bone metabolism in children with leukemia and solid tumors. METHODS: Thirty-six patients with a malignancy who received G-CSF therapy according to chemotherapy protocols and another 20 growth factor-free cancer patients who were enrolled as controls were included in the study. The serum osteocalcin and urinary free deoxypyridinoline levels were measured before the start of G-CSF therapy, on day 3 after treatment, and 7 days after G-CSF therapy was discontinued. In the control group, the measurements were made during corticosteroid and methotrexate-free chemotherapy. RESULTS: The mean osteocalcin level (8.6±2.3 ng/mL) from before the onset of treatment decreased significantly (7.7±2.3 ng/mL) on day 3 of G-CSF therapy and significantly increased after 7 days of G-CSF therapy (7.9±2.2 ng/mL) (p<0.001 and p<0.001, respectively), which was still significantly lower than the pre-G-CSF values (p<0.001). The urinary free deoxypyridinoline level significantly increased on day 3 of G-CSF treatment (25.6±6.5 nmol/mmol Cr) and significantly decreased after 7 days of G-CSF therapy (22.6±6.4 nmol/mmol Cr) (p<0.001 and p<0.001, respectively), which was still significantly higher than the values recorded before G-CSF therapy (p<0.001). CONCLUSION: The findings show that the short-term use of G-CSF in children with cancer can affect bone metabolism and can play a role in metabolic changes. Decreased osteoblastic activity and increased osteoclastic activity suggest that osteoporosis may be associated with bone pain in these patients.
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