Table 1.

IRP Activity and Ft Content in Monocytes in Relation to Iron Status

No.Serum IronTransferrin SaturationSerum FtMonocyte FtIRP Activity
μg/dL%μg/Lng/mg Proteinpmol/mg Protein
Controls 28 88 ± 29 19 ± 8 31 ± 32 611 ± 427 0.62 ± 0.18 
GH untreated 16 173 ± 56* 80 ± 25 2,249 ± 1,967 1,261 ± 763* 0.95 ± 0.15 
GH treated 17 133 ± 68* 50 ± 30 251 ± 229 637 ± 312 0.63 ± 0.19 
SH 154 ± 46* 59 ± 18 1,446 ± 1,039 1,204 ± 433* 0.15 ± 0.04 
No.Serum IronTransferrin SaturationSerum FtMonocyte FtIRP Activity
μg/dL%μg/Lng/mg Proteinpmol/mg Protein
Controls 28 88 ± 29 19 ± 8 31 ± 32 611 ± 427 0.62 ± 0.18 
GH untreated 16 173 ± 56* 80 ± 25 2,249 ± 1,967 1,261 ± 763* 0.95 ± 0.15 
GH treated 17 133 ± 68* 50 ± 30 251 ± 229 637 ± 312 0.63 ± 0.19 
SH 154 ± 46* 59 ± 18 1,446 ± 1,039 1,204 ± 433* 0.15 ± 0.04 

Analysis of serum iron indexes was performed as described in Materials and Methods. Monocyte Ft was measured by a radioimmunoassay based on an antihuman liver Ft antibody. IRP activity was determined by liquid scintillation counting of regions of the gels corresponding to the IRE/IRP complexes as reported in Materials and Methods. All values represent mean ± SD.

*

P < .05 v controls.

P < .001.

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