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Shen Y, Jia Y, Zhou J, Cheng XY, Huang HY, Sun CQ, Fan LL, Chen J, Jiang LY. Association of gestational diabetes mellitus with adverse pregnancy outcomes: our experience and meta-analysis. Int J Diabetes Dev Ctries 2020. [DOI: 10.1007/s13410-020-00802-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Lee CL, Chiu PC, Pang PC, Chu IK, Lee KF, Koistinen R, Koistinen H, Seppälä M, Morris HR, Tissot B, Panico M, Dell A, Yeung WS. Glycosylation failure extends to glycoproteins in gestational diabetes mellitus: evidence from reduced α2-6 sialylation and impaired immunomodulatory activities of pregnancy-related glycodelin-A. Diabetes 2011; 60:909-17. [PMID: 21300843 PMCID: PMC3046852 DOI: 10.2337/db10-1186] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVE Gestational diabetes mellitus (GDM) is a common metabolic disorder of pregnancy. Patients with GDM are at risk for high fetal mortality and gestational complications associated with reduced immune tolerance and abnormal carbohydrate metabolism. Glycodelin-A (GdA) is an abundant decidual glycoprotein with glycosylation-dependent immunomodulatory activities. We hypothesized that aberrant carbohydrate metabolism in GDM was associated with changes in glycosylation of GdA, leading to defective immunomodulatory activities. RESEARCH DESIGN AND METHODS GdA in the amniotic fluid from women with normal (NGdA) and GDM (DGdA) pregnancies was purified by affinity chromatography. Structural analysis of protein glycosylation was preformed by lectin-binding assay and mass spectrometry. Cytotoxicity, cell death, cytokine secretion, and GdA binding of the GdA-treated lymphocytes and natural killer (NK) cells were determined. The sialidase activity in the placental tissue from normal and GDM patients was measured. RESULTS GDM affected the glycosylation but not the protein core of GdA. Specifically, DGdA had a lower abundance of α2-6-sialylated and high-mannose glycans and a higher abundance of glycans with Sda (NeuAcα2-3[GalNAcβ1-4]Gal) epitopes compared with NGdA. DGdA had reduced immuosuppressive activities in terms of cytotoxicity on lymphocytes, inhibitory activities on interleukin (IL)-2 secretion by lymphocytes, stimulatory activities on IL-6 secretion by NK cells, and binding to these cells. Desialylation abolished the immunomodulation and binding of NGdA. Placental sialidase activity was increased in GDM patients, which may account for the reduced sialic acid content of DGdA. CONCLUSIONS Taken together, this study provides the first direct evidence for altered enzymatic glycosylation and impaired bioactivity of GdA in GDM patients.
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Affiliation(s)
- Cheuk-Lun Lee
- Department of Obstetrics and Gynaecology, University of Hong Kong, Hong Kong, China
- Department of Chemistry, University of Hong Kong, Hong Kong, China
- Centre for Reproduction, Development, and Growth, University of Hong Kong, Hong Kong, China
| | - Philip C.N. Chiu
- Department of Obstetrics and Gynaecology, University of Hong Kong, Hong Kong, China
- Centre for Reproduction, Development, and Growth, University of Hong Kong, Hong Kong, China
- Corresponding author: Philip C.N. Chiu,
| | - Poh-Choo Pang
- Division of Molecular Biosciences, Faculty of Natural Sciences, Imperial College London, London, U.K
| | - Ivan K. Chu
- Department of Chemistry, University of Hong Kong, Hong Kong, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, University of Hong Kong, Hong Kong, China
- Centre for Reproduction, Development, and Growth, University of Hong Kong, Hong Kong, China
| | - Riitta Koistinen
- Department of Clinical Chemistry, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Hannu Koistinen
- Department of Clinical Chemistry, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Markku Seppälä
- Department of Clinical Chemistry, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Howard R. Morris
- Division of Molecular Biosciences, Faculty of Natural Sciences, Imperial College London, London, U.K
| | - Bérangère Tissot
- Division of Molecular Biosciences, Faculty of Natural Sciences, Imperial College London, London, U.K
| | - Maria Panico
- Division of Molecular Biosciences, Faculty of Natural Sciences, Imperial College London, London, U.K
| | - Anne Dell
- Division of Molecular Biosciences, Faculty of Natural Sciences, Imperial College London, London, U.K
| | - William S.B. Yeung
- Department of Obstetrics and Gynaecology, University of Hong Kong, Hong Kong, China
- Centre for Reproduction, Development, and Growth, University of Hong Kong, Hong Kong, China
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Loukovaara S, Immonen IRJ, Loukovaara MJ, Koistinen R, Kaaja RJ. Glycodelin: a novel serum anti-inflammatory marker in type 1 diabetic retinopathy during pregnancy. ACTA ACUST UNITED AC 2006; 85:46-9. [PMID: 17244209 DOI: 10.1111/j.1600-0420.2006.00766.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
PURPOSE Inflammation may play a role in the development of diabetic retinopathy during pregnancy. Glycodelin is a glycoprotein whose secretion from the endometrial glands increases during pregnancy. Glycodelin has immunosuppressive properties thought to play a role in the protection of the fetoplacental unit. We studied the role of glycodelin in the development and progression of retinopathy in type 1 diabetes during pregnancy. METHODS Retinopathy was graded from fundus photographs in 45 diabetes subjects and nine non-diabetes subjects prospectively during pregnancy. Serum glycodelin concentration was measured by an immunofluorometric assay. RESULTS In women with diabetes with progression of retinopathy, serum glycodelin concentration was 263 ng/ml (range 116-505 ng/ml) during the first trimester, 61 ng/ml (range 30-106 ng/ml) during the second trimester, and 29 ng/ml (range 13-53 ng/ml) during the third trimester, compared with values of 595 ng/ml (range 376-870 ng/ml), 104 ng/ml (range 75-228 ng/ml) and 45 ng/ml (range 32-74 ng/ml), respectively, in diabetes subjects without progression (p = 0.005 between the groups). Low glycodelin concentration was associated with progression of diabetic retinopathy in multiple regression analysis. Serum glycodelin concentration was similar in women with and without diabetes throughout pregnancy (p = 0.63 by repeated measures ANOVA). CONCLUSIONS Low glycodelin concentration is associated with progression of retinopathy in pregnant women with diabetes. A possible causal relationship between low glycodelin levels and progression of retinopathy may be mediated by the immunomodulatory properties of glycodelin.
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Affiliation(s)
- Sirpa Loukovaara
- Department of Ophthalmology, Helsinki University Central Hospital, Helsinki, Finland.
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Jeschke U, Kunert-Keil C, Mylonas I, Hammer A, Schiessl B, Lomba I, Kuhn C, Schulze S, Friese K. Expression of glycodelin A in decidual tissue of preeclamptic, HELLP and intrauterine growth-restricted pregnancies. Virchows Arch 2005; 446:360-8. [PMID: 15756591 DOI: 10.1007/s00428-004-1201-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2004] [Accepted: 12/13/2004] [Indexed: 11/25/2022]
Abstract
During pregnancy, the placenta produces a variety of proteins that are responsible for the establishment of the foeto-maternal tolerance and circulation. The aim of this study was to investigate the expression of glycodelin A (formerly named PP14) in decidual tissue of placentas with intrauterine growth restriction (IUGR), preeclamptic patients, hemolysis, elevated liver, low-platelet (HELLP) patients and normal decidual tissue. Slides of paraffin-embedded decidual tissue of patients with IUGR, preeclamptic patients, HELLP patients and normal-term placentas were incubated with either polyclonal or monoclonal antibodies against glycodelin A. Staining reaction was performed with the ABC reagent. Intensity of immunohistochemical reaction on the slides was analysed using a semi-quantitative score. In addition, expression of glycodelin mRNA was analysed by in situ hybridisation. Expression of glycodelin A was significantly reduced in decidual cells of placentas with IUGR and HELLP, as investigated with both monoclonal and polyclonal antibodies and in situ hybridisation. However, preeclamptic decidual tissue showed no significantly different expression of intensity of glycodelin mRNA compared with normal placental tissue controls. A reduced expression of glycodelin A by decidual cells seems to be related to IUGR and HELLP. Therefore, glycodelin A might play an important role in the pathogeneses of these diseases.
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Affiliation(s)
- U Jeschke
- Ludwig-Maximilians-University Munich, 1st Department of Obstetrics and Gynaecology, Maistrasse 11, 80337 , Munich, Germany.
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