This study focused on determining the markers of Macrophage migration inhibitor (MIF), as well as the N-telopeptides of type I bone collagen (NTX), and some other parameters (alkaline phosphatase (ALP), vitamin D (Vit D), calcium (Ca), phosphorus (P), and magnesium (Mg), and their correlation with other parameters in osteoporosis. One hundred ten subjects were involved in the current study. There were two groups of patients: group I (30) women with severe osteoporosis and group II (30) women with mild osteoporosis. For comparison, 50 apparently healthy individuals were included as a control. Serum levels of MIF, and NTX were significantly higher in groups I and II as compared to the control group, which indicate that these two parameters were related to disease. Moreover MIF, and NTX were organized in one cluster when applying cluster analysis test to all the studied groups. This indicates that in most of the studied samples the two parameters were related to each other as well as to osteoporosis. Magnesium showed a significant decrease in its level in both groups as compared to the control. On the other hand, alkaline phosphatase (ALP) showed a significant increase in its activity in both studied groups as compared to the control. Vitamin D level manifested significant difference between group I and group II, with a significant decrease in its level when comparing group II with the control group. The MIF, NTX was highly associated with osteoporosis patients, in addition to Mg and Vit-D. On the other hand, Ca and P levels did not alter in a significant way with osteoporosis which may be considered as a risk factor as long as they are organized in one cluster with MIF, NTX, Mg, and Vit D in all the studied patients. Both markers showed a clear cut-off value using the ROC curve in which the best cutoff value of NTX was 166.8 pg/ml, and the best cutoff value of MIF was 6.6 ng/ml according to ROC analysis.
