Leukokinetic studies

Evaluation of neutropenia and neutrophilia in preterm infants

“…In the interval between 72 and 240 hours after birth, the ANC ranged between 2700–13,000/µL (5 th –95 th percentile) for infants >36 weeks gestation, between 1000–12,500/µL at 28–36 weeks, and 1300–15,300/µL at <28 weeks gestation. The upper limits of ANC in this data set were significantly higher than ranges reported by both Manroe and Mouzinho, which was unexpected but could be due to the methodological differences or might be a biological effect of high altitude at which the participating centers were located (10, 11). …”

Neutrophil Kinetics after Acute Hemorrhage

“…Finally, neutrophilia may be produced by reducing the rate at which neutrophils leave the blood as has been observed after the administration of adrenal glucocorticosteroids (6).…”

A case of chronic granulocytopenia associated with vasculitis and amyloidosis

“…Steroid therapy is known to increase the release of neutrophils into the blood stream and to inhibit their movement out of it, thus raising circulating neutrophil levels (Bishop, Athens, Boggs, Warner, Cartwright, and Wintrobe, 1968). However, the degree to which her neutrophil count apparently responded far exceeded the usual size of the response to pharmacological doses of steroids in normal individuals, and is as far as we are aware, unreported in spontaneous, cyclic, and familial neutropenia.…”