scholarly journals High levels of maternal total tri-iodothyronine, and low levels of fetal free L-thyroxine and total tri-iodothyronine, are associated with altered deiodinase expression and activity in placenta with gestational diabetes mellitus

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0242743
Author(s):  
Sebastián Gutiérrez-Vega ◽  
Axel Armella ◽  
Daniela Mennickent ◽  
Marco Loyola ◽  
Ambart Covarrubias ◽  
...  

Gestational Diabetes Mellitus (GDM) is characterized by abnormal maternal D-glucose metabolism and altered insulin signaling. Dysregulation of thyroid hormones (TH) tri-iodethyronine (T3) and L-thyroxine (T4) Hormones had been associated with GDM, but the physiopathological meaning of these alterations is still unclear. Maternal TH cross the placenta through TH Transporters and their Deiodinases metabolize them to regulate fetal TH levels. Currently, the metabolism of TH in placentas with GDM is unknown, and there are no other studies that evaluate the fetal TH from pregnancies with GDM. Therefore, we evaluated the levels of maternal TH during pregnancy, and fetal TH at delivery, and the expression and activity of placental deiodinases from GDM pregnancies. Pregnant women were followed through pregnancy until delivery. We collected blood samples during 10–14, 24–28, and 36–40 weeks of gestation for measure Thyroid-stimulating hormone (TSH), Free T4 (FT4), Total T4 (TT4), and Total T3 (TT3) concentrations from Normal Glucose Tolerance (NGT) and GDM mothers. Moreover, we measure fetal TSH, FT4, TT4, and TT3 in total blood cord at the delivery. Also, we measured the placental expression of Deiodinases by RT-PCR, western-blotting, and immunohistochemistry. The activity of Deiodinases was estimated quantified rT3 and T3 using T4 as a substrate. Mothers with GDM showed higher levels of TT3 during all pregnancy, and an increased in TSH during second and third trimester, while lower concentrations of neonatal TT4, FT4, and TT3; and an increased TSH level in umbilical cord blood from GDM. Placentae from GDM mothers have a higher expression and activity of Deiodinase 3, but lower Deiodinase 2, than NGT mothers. In conclusion, GDM favors high levels of TT3 during all gestation in the mother, low levels in TT4, FT4 and TT3 at the delivery in neonates, and increases deiodinase 3, but reduce deiodinase 2 expression and activity in the placenta.

2018 ◽  
Vol 6 (1) ◽  
pp. e000550 ◽  
Author(s):  
Carla Assaf-Balut ◽  
Nuria Garcia de la Torre ◽  
Alejandra Durán ◽  
Manuel Fuentes ◽  
Elena Bordiú ◽  
...  

ObjectivesTo assess whether Mediterranean Diet (MedDiet)-based medical nutrition therapy facilitates near-normoglycemia in women with gestational diabetes mellitus (GDMw) and observe the effects on adverse pregnancy outcomes.Research design and methodsThis is a secondary analysis of the St Carlos GDM Prevention Study, conducted between January and December 2015 in Hospital Clínico San Carlos (Madrid, Spain). One thousand consecutive women with normoglycemia were included before 12 gestational weeks (GWs), with 874 included in the final analysis. Of these, 177 women were diagnosed with gestational diabetes mellitus (GDM) and 697 had normal glucose tolerance. All GDMw received MedDiet-based medical nutrition therapy with a recommended daily extra virgin olive oil intake ≥40 mL and a daily handful of nuts. The primary goal was comparison of hemoglobin A1c (HbA1c) levels at 36–38 GWs in GDMw and women with normal glucose tolerance (NGTw).ResultsGDMw as compared with NGTw had higher HbA1c levels at 24–28 GWs (5.1%±0.3% (32±0.9 mmol/mol) vs 4.9%±0.3% (30±0.9 mmol/mol), p=0.001). At 36–38 GWs values were similar between the groups. Similarly, fasting serum insulin and homeostatic model assessment insulin resitance (HOMA-IR) were higher in GDMw at 24–28 GWs (p=0.001) but became similar at 36–38 GWs. 26.6% of GDMw required insulin for glycemic control. GDMw compared with NGTw had higher rates of insufficient weight gain (39.5% vs 22.0%, p=0.001), small for gestational age (6.8% vs 2.6%, p=0.009), and neonatal intensive care unit admission (5.6% vs 1.7%, p=0.006). The rates of macrosomia, large for gestational age, pregnancy-induced hypertensive disorders, prematurity and cesarean sections were comparable with NGTw.ConclusionsUsing a MedDiet-based medical nutrition therapy as part of GDM management is associated with achievement of near-normoglycemia, subsequently making most pregnancy outcomes similar to those of NGTw.


2009 ◽  
Vol 28 (2) ◽  
pp. 72-81 ◽  
Author(s):  
Donovan McGrowder ◽  
Kevin Grant ◽  
Rachael Irving ◽  
Lorenzo Gordon ◽  
Tazhmoye Crawford ◽  
...  

Lipid Profile and Clinical Characteristics of Women with Gestational Diabetes Mellitus and Preeclampsia Gestational diabetes mellitus (GDM) is associated with increased risk of pregnancy-induced hypertension and other maternal and foetal complications of pregnancy. The aims of the study were to evaluate the serum lipid profile of women with GDM, and determine the number of women with GDM who have preeclampsia (PE). A retrospective study of 84 women with GDM and 90 pregnant women with normal glucose tolerance (controls) was conducted. Women with GDM had significantly higher parity (p=0.047), total cholesterol (p=0.039) and triglycerides (p=0.033), but non-significantly lower HDL-cholesterol (p=0.086) when compared to controls. Systolic blood pressure was significantly elevated in women with GDM coupled with PE (GDM-PE; p=0.015), the mean birth weight of infants born to women with GDM-PE was significantly lower than that of women with only GDM (p=0.025). Women with GDM-PE had significantly higher triglycerides (p=0.020), had to be more multi-gravida (p=0.047) with significantly elevated VLDL-cholesterol (p=0.037) when compared with women with only GDM. 11.9% of women with GDM had PE. On the basis of these findings, it can be concluded that GDM is associated with hyperlipidaemia as evident by the significantly elevated total cholesterol and triglyceride concentrations. Women with dyslipidaemia and GDM are at risk of developing preeclampsia. It is imperative that blood lipids be evaluated in women with GDM during antenatal care as it would be helpful in the early detection and treatment of PE.


2021 ◽  
Author(s):  
Liang Song ◽  
Yiming Huang ◽  
Junqing Long ◽  
Yuanfan Li ◽  
Zongqin Pan ◽  
...  

Abstract Background: Evidence for osteocalcin role in glucose and energy metabolism is increasing. However, little is known about osteocalcin function in gestational diabetes mellitus. The aim of this study is to examine the associations between osteocalcin and gestational diabetes mellitus. Method: 36 patients with gestational diabetes mellitus and 40 normal glucose tolerance controls were recruited in the Maternal and Child Health Hospital Guangxi Zhuang Autonomous Region from May to August 2018. Total osteocalcin and biochemical indexes of maternal serum and umbilical vein serum were analyzed. Transcriptome of placenta were sequenced. Human trophoblast JAR cells were used for evaluated the affection of osteocalcin on trophoblast In vitro. There were no significant differences with maternal serum total osteocalcin levels between gestational diabetes mellitus and normal glucose tolerance groups. The gestational diabetes mellitus group has lower umbilical vein serum total osteocalcin (51.46 ng/mL ± 24.29 Vs 67.00 ng/mL ± 25.33, P = 0.008 ), lower adiponectin (1099.72 μg/L ± 102.65 Vs 1235.85 μg/L ± 94.63, P < 0.001), higher leptin (7.41 μg/L ± 0.28 Vs 6.02 μg/L ± 0.31, P < 0.001). A significant relationship existed between umbilical vein serum total osteocalcin levels and leptin (r = -0.456, P = 0.007). Osteocalcin promote JAR trophoblast cells proliferation and HCG synthesis. 36 correlated gene modules of placental transcriptome were identified through weighted gene co-expression network analysis, 2 of them were associated with osteocalcin. Conclusion: lower osteocalcin in umbilical vein serum is associated with gestational diabetes mellitus, osteocalcin may regulate placenta function via adiponectin.


2009 ◽  
Vol 33 (4) ◽  
pp. 279 ◽  
Author(s):  
Eun Suk Oh ◽  
Jung Hee Han ◽  
Sung Min Han ◽  
Jee Aee Im ◽  
Eun Jung Rhee ◽  
...  

2020 ◽  
Vol 08 (06) ◽  
pp. 148-159
Author(s):  
Mahmudul Hossain ◽  
A. K. M. Shahidur Rahman ◽  
Samira Mahjabeen ◽  
Mohona Zaman ◽  
Mohaiminul Abedin ◽  
...  

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