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Extracellular and intracellular magnesium depletion in pregnancy and gestational diabetes.

Abstract：

OBJECTIVE:Our purpose was to investigate a possible ionic basis linking pregnancy and gestational diabetes with the vascular disorders associated with them. STUDY DESIGN:We used phosphorus 31 nuclear magnetic resonance spectroscopy and magnesium- and calcium-specific ion electrodes to measure erythrocyte intracellular free magnesium, plasma ionized magnesium, and ionized calcium in fasting nonpregnant (n = 26), normal pregnant (n = 20), and diet-controlled (class A1) gestational diabetic women (n = 13). RESULTS:Compared with nonpregnant controls (total magnesium 0.91 +/- 0.07 mmol/L, ionized magnesium 0.51 +/- 0.03 mmol/L), total and ionized magnesium were significantly lower in both normal pregnant (total magnesium 0.72 +/- 0.07 mmol/L, ionized magnesium 0.46 +/- 0.02 mmol/L, significance < 0.0001) and gestational diabetic (total magnesium 0.74 +/- 0.05 mmol/L, ionized magnesium 0.46 +/- 0.02 mmol/L, significance < 0.0001) subjects. Gestational diabetic women had significantly lower intracellular free magnesium values compared with nonpregnant and normal pregnant individuals (140 +/- 20 mumol/L vs 169 +/- 27 mumol/L, significance = 0.007). Ionized calcium values were similar in all groups, resulting in significant elevation (significance < 0.0001) of ionized calcium/ionized magnesium ratios in both pregnant groups. CONCLUSIONS:These results support the presence of magnesium depletion in pregnancy itself and to a greater extent in gestational diabetes. We suggest that magnesium depletion, or relative calcium excess, may predispose to vascular complications of pregnancy.

journal_name

Am J Obstet Gynecol

journal_title

American journal of obstetrics and gynecology

authors

Bardicef M,Bardicef O,Sorokin Y,Altura BM,Altura BT,Cotton DB,Resnick LM

doi

10.1016/0002-9378(95)90035-7

subject

Has Abstract

pub_date

1995-03-01 00:00:00

pages

1009-13

issue

3

eissn

0002-9378

issn

1097-6868

pii

0002-9378(95)90035-7

journal_volume

172

pub_type

杂志文章

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