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Lactoferrin in human neutrophilic polymorphonuclear leukocytes in relation to iron metabolism
Abstract:
Lactoferrin (LF), the iron-binding protein of external secretions and neutrophilic polymorphonuclear leukocytes (PMN), was studied in 27 patients during granulocytosis caused by acute inflammation and in disorders without granulocytosis (iron deficiency anemia, iron overload and liver diseases). During granulocytosis the LF concentration of PMN was significantly lower than in controls (p less than 0.001). This difference proved to be related to the number of PMN. A relation between the LF concentration of PMN and iron metabolism could be demonstrated: loss of iron by blood donation is accompanied by a significant decrease in the LF concentration in PMN, whereas iron therapy in patients with iron deficiency anemia is accompanied by a significant increase in the LF concentration in PMN.
Insights
Lactoferrin (LF) levels in neutrophils are lower during granulocytosis and correlate with iron metabolism. Iron loss decreases LF, while iron therapy increases it, highlighting LF
Area of Science:
- Biochemistry
- Hematology
- Immunology
Background:
- Lactoferrin (LF) is an iron-binding protein found in secretions and neutrophils.
- Neutrophilic polymorphonuclear leukocytes (PMN) are key immune cells involved in inflammation.
Purpose of the Study:
- To investigate lactoferrin (LF) concentration in neutrophils (PMN) during granulocytosis and other conditions.
- To explore the relationship between LF levels in PMN and iron metabolism.
Main Methods:
- Studied 27 patients with granulocytosis, iron deficiency anemia, iron overload, and liver diseases.
- Compared LF concentrations in PMN between patient groups and controls.
- Analyzed the correlation between LF levels and PMN count, and iron metabolism indicators.
Main Results:
- Significantly lower LF concentration in PMN during granulocytosis compared to controls (p < 0.001).
- LF concentration in PMN is related to the number of PMN.
- Blood donation (iron loss) led to decreased PMN LF; iron therapy in anemia increased PMN LF.
Conclusions:
- Granulocytosis is associated with reduced lactoferrin levels in neutrophils.
- Neutrophil lactoferrin levels are influenced by iron metabolism and PMN count.