Expression changes of sex hormone binding globulin in GDM placental tissues
-
Lei Sun
,
Weiping Teng
Abstract
Objective: To compare the expression of sex hormone binding globulin (SHBG) in normal placental tissues with placental tissues from patients with gestational diabetes mellitus (GDM) and to deduce the mechanism affecting placental SHBG in GDM.
Methods: We detected SHBG localization and measured SHBG mRNA and protein using immunohistochemistry, reverse-transcription polymerase chain reaction, and Western blotting, respectively, in normal and GDM placental tissues. The distribution of SHBG in placental cells was examined using immune electron microscopy.
Results : Compared to controls, placental tissues from patients in the GDM group displayed disordered cell surface microvilli that were decreased in quantity, swollen, and had narrowed and broken gap junctions. Intracellular abnormalities included expanded rough endoplasmic reticula, swollen mitochondria, and irregular nuclear morphologies with non-uniform chromatin. SHBG localized primarily to trophoblast cell membranes and cytoplasm. SHBG was strongly expressed on the microvilli side and weakly expressed on the basement membrane with uneven staining. SHBG also was expressed in villous stromal cells and vascular endothelial cells. Compared to the controls, placental tissues from the GDM group displayed significantly decreased immunostaining rates for SHBG, as well as significantly lower levels of SHBG mRNA and protein expression (P<0.05).
Conclusion: SHBG was detected in placental trophoblast cells from patients with GDM, and the synthesis and secretion of SHBG were reduced when trophoblast cells were irregular. A decrease in SHBG could affect placental function or aggravate GDM. Our results suggest that placental SHBG plays an important role in the pathogenesis of GDM.
©2012 by Walter de Gruyter Berlin Boston
Articles in the same Issue
- Review Article
- Cardiac morbidity in twin-twin transfusion syndrome?
- Original Articles – Obstetrics
- Risk factors for postpartum hypertension in women with twin pregnancies
- Serum levels of the adipokine chemerin in preeclampsia
- Expression changes of sex hormone binding globulin in GDM placental tissues
- Evaluation of serum boron levels and lipid profile in pregnancies with or without gestational diabetes
- Racial disparities in maternal hemoglobin concentrations and pregnancy outcomes
- Prediction of imminent preterm delivery in women with preterm premature rupture of membranes
- Endocervical immune mediator production following successful rescue or ultrasound indicated cerclage placement
- Co-ordinate expression of Th1/Th2 phenotypes in maternal and fetal blood: evidence for a transplacental nexus
- Original Articles – Fetus
- How does the duration of active pushing in labor affect neonatal outcomes?
- Quantification of the subcutaneous fat layer with MRI in fetuses of healthy mothers with no underlying metabolic disease vs. fetuses of diabetic and obese mothers
- Original Article – Newborn
- Immediate clinical outcomes in preterm neonates receiving antenatal magnesium for neuroprotection
- Developmental delay in hypoxia-induced HO-1 expression predisposes to gut injury
- Short communication
- Correlation of Cyr61 and CTGF in placentas from the late pre-eclamptic pregnancy
- Letters to the Editor
- Cross-species transfer of group B streptococcus via ingestion?
- WAPM-Newsletter
- WAPM-Newsletter No 1/2012
- Congress Calender
- Congress Calendar
- Prelims
- Prelims
Articles in the same Issue
- Review Article
- Cardiac morbidity in twin-twin transfusion syndrome?
- Original Articles – Obstetrics
- Risk factors for postpartum hypertension in women with twin pregnancies
- Serum levels of the adipokine chemerin in preeclampsia
- Expression changes of sex hormone binding globulin in GDM placental tissues
- Evaluation of serum boron levels and lipid profile in pregnancies with or without gestational diabetes
- Racial disparities in maternal hemoglobin concentrations and pregnancy outcomes
- Prediction of imminent preterm delivery in women with preterm premature rupture of membranes
- Endocervical immune mediator production following successful rescue or ultrasound indicated cerclage placement
- Co-ordinate expression of Th1/Th2 phenotypes in maternal and fetal blood: evidence for a transplacental nexus
- Original Articles – Fetus
- How does the duration of active pushing in labor affect neonatal outcomes?
- Quantification of the subcutaneous fat layer with MRI in fetuses of healthy mothers with no underlying metabolic disease vs. fetuses of diabetic and obese mothers
- Original Article – Newborn
- Immediate clinical outcomes in preterm neonates receiving antenatal magnesium for neuroprotection
- Developmental delay in hypoxia-induced HO-1 expression predisposes to gut injury
- Short communication
- Correlation of Cyr61 and CTGF in placentas from the late pre-eclamptic pregnancy
- Letters to the Editor
- Cross-species transfer of group B streptococcus via ingestion?
- WAPM-Newsletter
- WAPM-Newsletter No 1/2012
- Congress Calender
- Congress Calendar
- Prelims
- Prelims
