Insulin receptor binding to erythrocytes in the first half of pregnancy is increased in healthy pregnant women as compared with non-pregnant or gestational diabetic women
Clinica Chimica Acta, ISSN: 0009-8981, Vol: 221, Issue: 1, Page: 33-46
1993
- 4Citations
- 14Captures
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Article Description
Insulin binding to erythrocytes was measured longitudinally by a competitive radioreceptor assay in 21 healthy pregnant (HP) and 20 well-controlled gestational diabetic women (GD) in 4-week intervals throughout pregnancy and at day 4 post-partum. Maximum insulin binding (maxbdg) at weeks 8–14 was increased ( P < 0.001) in HP (median: 6.0%) but not in GD (median: 2.7%) as compared with non-pregnant control subjects (C) (median: 3.6%; previously reported: Clin. Chim. Acta 1992;207:57–71) due to an increased number of high-affinity insulin receptors. Throughout gestation the binding decreased continuously, to reach at term the levels found in C. In GD maxbdg remained close to the level of C throughout pregnancy. Binding differences between HP and GD were independent of the body mass index. Maxbdg did not differ between diet- and insulin-treated patients. It was higher in women whose offspring had low umbilical cord insulin levels (< 10 μunits/ml). The findings suggest that (a) higher insulin binding in HP could contribute to the improved glucose tolerance in early pregnancy and (b) the lack of increase in insulin binding during early pregnancy in gestational diabetes might be one factor leading to the manifestation of the disease in late pregnancy. However, it must be kept in mind that insulin receptors on erythrocytes do not necessarily resemble those on the major target tissues of insulin.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/0009898193900205; http://dx.doi.org/10.1016/0009-8981(93)90020-5; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0027759531&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/8149641; https://linkinghub.elsevier.com/retrieve/pii/0009898193900205; http://dx.doi.org/10.1016/0009-8981%2893%2990020-5; https://dx.doi.org/10.1016/0009-8981%2893%2990020-5
Elsevier BV
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