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Myeloid Colony-Stimulating Factors Use in the Newborn

Con Sreenan, MB, MRCP; Horacio Osiovich, MD, FRCPC
Arch Pediatr Adolesc Med. 1999;153(9):984-988. doi:10.1001/archpedi.153.9.984.
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Bacterial and fungal sepsis are major causes of morbidity and mortality in the newborn. Multiple factors contribute to this increased susceptibility to infection, including quantitative and qualitative neutrophil defects, with a reduction in neutrophil number and function. Neutropenia in the newborn may occur in association with sepsis and has a poor prognosis. In addition to antibiotic therapy and supportive care, granulocyte colony-stimulating factor (G-CSF) and granulocyte-macrophage colony-stimulating factor (GM-CSF) have been used to reduce morbidity and mortality. Granulocyte CSF is the physiological regulator of neutrophil production and function. Administration of G-CSF results in increased neutrophil production and counts and improved neutrophil function. Several studies of animal and human newborns having neutropenia or suspected sepsis investigated the use of G-CSF and GM-CSF to elevate neutrophil counts and reduce morbidity and mortality in this population. Results of small clinical trials using G-CSF and GM-CSF in very low-birth-weight infants having neutropenia show increased neutrophil counts and a reduced incidence of sepsis during the neonatal period. Despite these promising early results, further studies of the safety and efficacy of G-CSF and GM-CSF administration in neonates are required before their routine use can be recommended as either prophylaxis or treatment for neonatal sepsis.





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