Magnesium at physiological pregnancy and at its complications

Sources of literature on the role of the trace element magnesium and the assosiation with calcium in physiological processes in the body of reproductive aged women and pregnant women, the importance of its main functions and role in preventing the main pregnancy complications were analyzed. Magnesium is the fourth most important extracellular cation after sodium, potassium and calcium and the second intracellular cation in importance after potassium. Many researchers have proven the participation of magnesium in almost everyone important functions in the body. Magnesium performs the following functions which are closely interconnected: metabolic, energetic, enzymatic, cardiovascular, antithrombotic, vascular, neuroprotective, structural, is an antagonist of calcium and an agonist of NMDA receptors. Magnesium realizes its functions in close interaction with cations of sodium, potassium and calcium. It acts as a calcium antagonist. It should be noted attention to the understanding of the interaction of divalent cations-competitors of magnesium and calcium. Calcium has complex influences on interaction of magnesium with blood proteins, reduces its concentration, which can affect physiological processes during pregnancy and in non-pregnant women. Today, magnesium is used only for prevention and treatment of eclampsia, in which anticonvulsants are commonly used ineffective. It can be assumed that different convulsive states have different intracellularly or extracellularly magnesium concentration is important in the pathogenesis and occurrence of eclampsia. Determination of magnesium concentration never was indicated in the recommendations for the management of preeclampsia. Magnesium use is insufficiently substantiated in cases of uterus contraction activity in any conditions (threat of abortion, premature birth) and prevention of pathological blood clot formation (as causes of multiple complications of pregnancy), neuroprotective effect on a child. The role of magnesium in the production of steroid hormones has been proven. However, this effect remains unrealized in obstetrics and gynecology practice. Data from literature sources given in the article help justify the use of magnesium and analyze its interaction with calcium during pregnancy.