Comparative findings on serum IMg²⁺ of normal and diseased human subjects with the Nova and Kone Ise's for Mg²⁺

Abstract

Altura BT, Bertschat, F, Jeremias, A, Ising H, Altura BM. Comparative findings on serum IMg²⁺ of normal and diseased human subjects with the NOVA and KONE ISE's for Mg²⁺. Scand J Clin Lab Invest 1994; 54, Suppl 217: 77-81.

It is clear now that although different ionophores for ionized Mg (IMg²⁺) have been designed by several groups, each of these has a distinctly different K_MgCa. In view of this, it is important to determine whether each of these ion selective electrodes (ISE's) yield identical results for IMg²⁺ in sera from healthy and diseased humans. Using such an approach, we determined, in a blinded-and random manner, IMg with both the NOVA and KONE ISE's for IMg²⁺ in two independent laboratories. No significant differences were found either for sera from healthy human volunteers or diseased patients. We did, however, note several interesting findings: 1. randomly, selected hospitalized patients exhibit a much higher incidence of abnormalities for IMg²⁺ (57–71%) than that noted previously for total Mg (TMg) measurements; and 2. coronary heart disease, rectal cancer and multiple sclerosis patients exhibit extracellular deficits in ionized free Mg.

Key Words:

• Correspondence between ISE's for IMg²⁺
• IMg²⁺ in hospitalized patients
• IMg²⁺ and coronary disease
• IMg²⁺ and cancer
• IMg²⁺ in multiple sclerosis