@article{FruscalzoLonderoDriuletal.2015, author = {Fruscalzo, Arrigo and Londero, Ambrogio P. and Driul, Lorenza and Henze, Andrea and Tonutti, Laura and Ceraudo, Maria and Zanotti, Giuseppe and Berni, Rodolfo and Schweigert, Florian J. and Raila, Jens}, title = {First trimester concentrations of the TTR-RBP4-retinol complex components as early markers of insulin-treated gestational diabetes mellitus}, series = {Clinical chemistry and laboratory medicine : journal of the Forum of the European Societies of Clinical Chemistry - the European Branch of the International Federation of Clinical Chemistry and Laboratory Medicine}, volume = {53}, journal = {Clinical chemistry and laboratory medicine : journal of the Forum of the European Societies of Clinical Chemistry - the European Branch of the International Federation of Clinical Chemistry and Laboratory Medicine}, number = {10}, publisher = {De Gruyter}, address = {Berlin}, issn = {1434-6621}, doi = {10.1515/cclm-2014-0929}, pages = {1643 -- 1651}, year = {2015}, abstract = {Background: The objective of the study was to investigate the relationship between first trimester maternal serum levels of the TTR-RBP4-ROH complex components and the later insurgence of an altered glucose metabolism during pregnancy. Methods: Retrospective case control study including 96 patients between the 12th and 14th week of gestation, 32 that developed gestational diabetes mellitus (GDM), respectively, 21 non-insulin-treated (dGDM) and 11 insulin-treated (iGDM), 20 large for gestational age fetuses (LGA) without GDM and 44 patients with normal outcome as control. Serum concentrations of RBP4 and TTR were assessed by ELISA; serum concentration of ROH by reverse-phase high performance liquid chromatography (rpHPLC). The molecular heterogeneity of TTR and RBP4 was analyzed after immunoprecipitation by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS). Results: iGDM patients were characterized by reduced TTR, RBP4 and ROH compared to controls (respectively, iGDM vs. controls, mean +/- SD: TTR 3.96 +/- 0.89 mu mol/L vs. 4.68 +/- 1.21 mu mol/L, RBP4 1.13 +/- 0.25 mu mol/L vs. 1.33 +/- 0.38 mu mol/L and ROH 1.33 +/- 0.17 mu mol/L vs. 1.62 +/- 0.29 mu mol/L, p < 0.05). TTR containing Gly10 in place of Cys10 was lower in the iGDM group (p < 0.05) compared to controls. In the final logistic regression model ROH significantly predicted the diagnosis of iGDM (OR 0.93, 95\% CI 0.87-0.98, p < 0.05). Conclusions: First trimester maternal serum ROH, RBP4 and TTR represent potential biomarkers associated with the development of iGDM.}, language = {en} }