THE EFFECTS OF PROSPECTIVE EARLY STRICT MANAGEMENT OF MATERNAL DIABETES ON MATERNAL IONIZED CALCIUM & 1,25(OH) 2 VITAMIN D
THE EFFECTS OF PROSPECTIVE EARLY STRICT MANAGEMENT OF MATERNAL DIABETES ON MATERNAL IONIZED CALCIUM & 1,25(OH) 2 VITAMIN D
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母亲糖尿病的前瞻性早期严格管理对母亲离子钙的影响
DOI:
10.1203/00006450-198404001-01250
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发表时间:
1984
影响因子:
3.6
通讯作者:
R. Tsang
中科院分区:
文献类型:
--
作者:
P. Shaul;J. Steichen;D. Buckley;Kay Ellis;R. Tsang
Chemically induced murine diabetes is associated with negative calcium (Ca) balance & decreased serum 1,25-dihydroxyvitamin D (1,25(OH)2D) levels; insulin therapy corrects these defects. We hypothesized that diabetes in pregnancy causes decreased maternal ionized Ca (Cai) & 1,25(OH)2D, with indirect effects on neonatal Ca, & that prospective strict management of diabetes from early pregnancy ameliorates these changes. In a comprehensive clinical trial, 57 pregnant insulin-dependent diabetics were randomly assigned during the first trimester to strict vs customary management (Sm vs. Cm) grps. Maternal Cai at delivery was higher in Sm (4.52 ± 0.08 SEM mg/dl) vs. Cm (4.27 ± 0.07 mg/dl, p< 0.02). There was no difference between grps. in maternal 25-hydroxyvit. D (25OHD) or 1,25(OH)2D at delivery. Infants (IDMs) in Sm grp. had higher 24 hr. serum Ca (8.3 ± 0.20 mg/dl) vs. Cm grp IDMs (7.8 ± 0.23 mg/dl, p < 0.04), but no difference was noted by 72 hr. There was no difference in Sm vs. Cm neonatal 25OHD (27 ± 2.9 ng/ml vs. 27 ± 3.1) or 1,25(OH)2D (60 ± 9.4 pg/ml vs. 60 ± 6.9) at 24 hrs. Hypocalcemic (Ca < 7.0 mg/dl)2(HC) IDMs had lower maternal Cai (4.15 ± 0.09 mg/dl) vs. nomocalcemic (NC) IDMs (4.46 ± 0.06, p < 0.02); there was no difference in maternal or neonatal 25OHD & 1,25(OH)2 for HC vs. NC infants. Thus, strict management of maternal diabetes results in increased maternal Cai, but has no effect on maternal 1,25(OH)2. We speculate that improved Ca status in the diabetic pregnancy contributes to improved neonatal Ca homeostasis.