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D'Oria R, Laviola L, Giorgino F, Unfer V, Bettocchi S, Scioscia M. PKB/Akt and MAPK/ERK phosphorylation is highly induced by inositols: Novel potential insights in endothelial dysfunction in preeclampsia. Pregnancy Hypertens 2017; 10:107-112. [PMID: 29153661 DOI: 10.1016/j.preghy.2017.07.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 07/06/2017] [Accepted: 07/08/2017] [Indexed: 02/01/2023]
Abstract
PKB/Akt and MAP/ERK are intracellular kinases regulating cell survival, proliferation and metabolism and as such hold a strategical role in preeclampsia. In fact intracellular pathways related to immunological alterations, endothelial dysfunction and insulin resistance in preeclampsia converge on these molecules. Inositol second messengers are involved in metabolic and cell signaling pathways and are highly expressed during preeclampsia. To evaluate the pathophysiological significance of this response, the effect of myo-inositol and d-chiro inositol on the activation of PKB/Akt and MAPK/ERK was assessed in human endothelial cells in vitro. Time-course and dose-response analyses of phosphorylation following incubation with inositols showed an approximately 6-fold and 15-fold increase for myo-inositol and d-chiro inositol (p<0.05), respectively. Both inositols promoted a significantly higher PKB/Akt and MAPK/ERK phosphorylation than insulin. Thus, exogenously administered inositols can activate PKB/Akt and MAPK/ERK in human endothelial cells in vitro. The increased production of d-chiro inositol phosphoglycans (IPG-P) during preeclampsia may thus represent a compensatory response, potentially promoting cell survival and metabolism.
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Affiliation(s)
- Rossella D'Oria
- Department of Emergency and Organ Transplantation, Section of Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari "Aldo Moro", Bari, Italy
| | - Luigi Laviola
- Department of Emergency and Organ Transplantation, Section of Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari "Aldo Moro", Bari, Italy
| | - Francesco Giorgino
- Department of Emergency and Organ Transplantation, Section of Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari "Aldo Moro", Bari, Italy
| | - Vittorio Unfer
- Department of Medical Sciences, IPUS-Institute of Higher Education, Chiasso, Switzerland
| | - Stefano Bettocchi
- Department of Gynecology, Obstetrics and Neonatology (DIGON), I Clinic, Medical University Policlinico of Bari, Bari, Italy
| | - Marco Scioscia
- Department of Obstetrics and Gynecology, Sacro Cuore Don Calabria, Negrar, Verona, Italy.
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Kunjara S, McLean P, Rademacher L, Rademacher TW, Fascilla F, Bettocchi S, Scioscia M. Putative Key Role of Inositol Messengers in Endothelial Cells in Preeclampsia. Int J Endocrinol 2016; 2016:7695648. [PMID: 27738431 PMCID: PMC5050364 DOI: 10.1155/2016/7695648] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 07/26/2016] [Accepted: 08/04/2016] [Indexed: 02/01/2023] Open
Abstract
Immunological alterations, endothelial dysfunction, and insulin resistance characterize preeclampsia. Endothelial cells hold the key role in the pathogenesis of this disease. The signaling pathways mediating these biological abnormalities converge on PKB/Akt, an intracellular kinase regulating cell survival, proliferation, and metabolism. Inositol second messengers are involved in metabolic and cell signaling pathways and are highly expressed during preeclampsia. Intracellular action of these molecules is deeply affected by zinc, manganese, and calcium. To evaluate the pathophysiological significance, we present the response of the intracellular pathways of inositol phosphoglycans involved in cellular metabolism and propose a link with the disease.
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Affiliation(s)
- Sirilaksana Kunjara
- Division of Biosciences, Research Department of Cell and Developmental Biology, University College London, London, UK
| | - Patricia McLean
- Division of Biosciences, Research Department of Cell and Developmental Biology, University College London, London, UK
| | | | | | - Fabiana Fascilla
- Department of Biomedical Sciences and Human Oncology (DIMO), II Unit of Obstetrics and Gynecology, University of Bari Aldo Moro, Bari, Italy
| | - Stefano Bettocchi
- Department of Biomedical Sciences and Human Oncology (DIMO), II Unit of Obstetrics and Gynecology, University of Bari Aldo Moro, Bari, Italy
| | - Marco Scioscia
- Department of Obstetrics and Gynecology, Sacro Cuore Don Calabria, Negrar, Verona, Italy
- *Marco Scioscia:
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Robajac D, Masnikosa R, Miković Ž, Mandić V, Nedić O. Oxidation of placental insulin and insulin-like growth factor receptors in mothers with diabetes mellitus or preeclampsia complicated with intrauterine growth restriction. Free Radic Res 2015; 49:984-9. [PMID: 25812587 DOI: 10.3109/10715762.2015.1020798] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Placental insulin receptor (IR) and insulin-like growth factor receptors (IGFRs) are essential for fetal growth. We investigated structural changes of these receptors exposed to increased oxidative stress in mothers diagnosed with diabetes mellitus (DM) or preeclampsia (PE) complicated with intrauterine growth restriction. Increased amount of IR and decreased amounts of IGF1R and IGF2R were found in both pathologies, accompanied by significant elevation in protein carbonyls. When isolated receptors were examined, increased carbonylation of IR and IGF1R in PE placentas was detected, whereas the amounts of carbonylated IR and IGF1R were similar in DM and healthy placentas. Carbonylation status of IGF2R did not change due to pathology, confirming the detrimental role of primary structure and conformation in oxidative susceptibility. Ligand binding was similar in all three groups of samples and did not seem to be affected by receptor oxidation. Since babies delivered by mothers with PE were smaller than the referent population, increased carbonylation of receptors might have affected downstream receptor signaling post-ligand binding.
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Affiliation(s)
- D Robajac
- Department for Metabolism, INEP - Institute for the Application of Nuclear Energy, University of Belgrade , Belgrade , Republic of Serbia
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Scioscia M, Nigro M, Montagnani M. The putative metabolic role of d -chiro inositol phosphoglycan in human pregnancy and preeclampsia. J Reprod Immunol 2014; 101-102:140-147. [DOI: 10.1016/j.jri.2013.05.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Revised: 05/11/2013] [Accepted: 05/23/2013] [Indexed: 02/01/2023]
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Ferreira GD, Orcy RB, Martins-Costa SH, Ramos JGL, Brum IS, Corleta HVE, Capp E. Insulin stimulation of Akt/PKB phosphorylation in the placenta of preeclampsia patients. SAO PAULO MED J 2011; 129:387-91. [PMID: 22249794 PMCID: PMC10868925 DOI: 10.1590/s1516-31802011000600004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 03/29/2011] [Accepted: 04/06/2011] [Indexed: 01/22/2023] Open
Abstract
CONTEXT AND OBJECTIVE Preeclampsia is a multi-systemic disease and one of the most frequent severe health problems during pregnancy. Binding of insulin triggers phosphorylation and activates cytoplasmic substrates such as phosphatidylinositol 3 kinase (PI3K). Phosphorylation of membrane phosphoinositide 2 (PIP2) to phosphoinositide 3 (PIP3) by PI3K starts Akt/PKB activation. Defects in phosphorylation of the insulin receptor and its substrates have an important role in insulin resistance. Studies have shown that insulin resistance is associated with preeclampsia and its pathophysiology. The aim here was to investigate insulin stimulation of the Akt/PKB pathway in the placenta, in normal and preeclampsia parturients. DESIGN AND SETTING Cross-sectional study in a tertiary public university hospital. METHODS Placentas were collected from 12 normal and 12 preeclampsia patients. These were stimulated and analyzed using Western blot to quantify the Akt/PKB phosphorylation. RESULTS The insulin stimulation was confirmed through comparing the stimulated group (1.14 ± 0.10) with the non-stimulated group (0.91 ± 0.08; P < 0.001). The phosphorylation of Akt/PKB did not differ between the placenta of the normal patients (1.26 ± 0.16) and those of the preeclampsia patients (1.01 ± 0.11; P = 0.237). CONCLUSIONS In vitro insulin stimulation of the human placenta has been well established. There was no difference in Akt/PKB phosphorylation, after stimulation with insulin, between placentas of normal and preeclampsia patients. Nevertheless, it cannot be ruled out that the Akt/PKB signaling pathway may have a role in the pathophysiology of preeclampsia, since the substrates of Akt/PKB still need to be investigated.
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Affiliation(s)
- Gustavo Dias Ferreira
- MSc, Molecular, Endocrine and Tumor Biology Laboratory, Universidade Federal do Rio Grande do Sul (UFRGS), and PhD Student in Gynecology and Molecular Obstetrics Laboratory, Research Center, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
| | - Rafael Bueno Orcy
- PhD. Physiologist, Molecular, Endocrine and Tumor Biology Laboratory, Universidade Federal do Rio Grande do Sul (UFRGS), and Researcher in Gynecology and Molecular Obstetrics Laboratory, Research Center, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
| | - Sérgio Hofmeister Martins-Costa
- MD, PhD. Adjunct Professor, Gynecology and Obstetrics Service, Hospital de Clínicas de Porto Alegre, and Department of Gynecology and Obstetrics, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - José Geraldo Lopes Ramos
- MD, PhD. Associate Professor, Gynecology and Obstetrics Service, Hospital de Clínicas de Porto Alegre, and Department of Gynecology and Obstetrics, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Ilma Simoni Brum
- MD, PhD. Associate Professor, Department of Physiology, Molecular, Endocrine and Tumor Biology Laboratory, Universidade Federal do Rio Grande do Sul (UFRGS), Gynecology and Molecular Obstetrics Laboratory, Research Center, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
| | - Helena von Eye Corleta
- MD. Associate Professor, Gynecology and Obstetrics Service, Hospital de Clínicas de Porto Alegre, and Department of Gynecology and Obstetrics, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Edison Capp
- MD, PhD. Associate Professor, Department of Gynecology and Obstetrics, Universidade Federal do Rio Grande do Sul (UFRGS), and Coordinator of Master's degree program in Biological Sciences (Physiology), Molecular, Endocrine and Tumor Biology Laboratory, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil.
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Scioscia M, Williams PJ, Gumaa K, Fratelli N, Zorzi C, Rademacher TW. Inositol phosphoglycans and preeclampsia: from bench to bedside. J Reprod Immunol 2011; 89:173-7. [DOI: 10.1016/j.jri.2011.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 02/09/2011] [Accepted: 03/07/2011] [Indexed: 12/24/2022]
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Desvignes F, Bourdel N, Laurichesse-Delmas H, Savary D, Gallot D. Syndrome de Ballantyne secondaire à une infection maternofœtale à Parvovirus B19 : à propos de deux cas. ACTA ACUST UNITED AC 2011; 40:262-6. [DOI: 10.1016/j.jgyn.2010.12.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Revised: 11/29/2010] [Accepted: 12/08/2010] [Indexed: 02/01/2023]
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Burton GJ, Scioscia M, Rademacher TW. Endometrial secretions: creating a stimulatory microenvironment within the human early placenta and implications for the aetiopathogenesis of preeclampsia. J Reprod Immunol 2011; 89:118-25. [PMID: 21531028 DOI: 10.1016/j.jri.2011.02.005] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 01/31/2011] [Accepted: 02/21/2011] [Indexed: 02/01/2023]
Abstract
Endometrial glands represent an important source of nutrients for the conceptus during the first trimester. Their secretions are enriched with carbohydrates, and glycogen accumulates within the syncytiotrophoblast of the placenta. It has been assumed that fetal and placental metabolism follow adult pathways, although it is now appreciated that early development occurs in a low-oxygen environment. In past decades, a novel family of putative insulin mediators, inositol phosphoglycans (IPGs), was discovered. These molecules act as allosteric activators and/or inhibitors of enzymes and transduction proteins involved in the control of cell signalling and metabolic pathways, and determine the specificity of responses after activation of the insulin receptor. One member, IPG P-type, activates pyruvate dehydrogenase phosphatase (PDH-Pase), glycogen synthase phosphatase, and glycerol-3-phosphate acyltransferase. Activation of key phosphatases play a major role in the regulation of glucose disposal by oxidative metabolism via PDH, and the non-oxidative storage by glycogen synthesis, both pathways classically known to be regulated by insulin. High concentrations of IPG P-type in amniotic fluid suggest a role in the regulation of carbohydrate metabolism in the fetal-placental unit. Glycogen accumulation in the syncytiotrophoblast also occurs in preeclamptic pregnancies, and is consistently associated with higher placental levels of IPG P-type. Here, we explore the relationship between nutrients provided by the endometrial glands during early pregnancy, IPG P-type and fetal metabolic requirements. We also discuss whether a disconnect between the placental/fetal metabolic state and oxygen tension could lead to a preeclamptic-type syndrome via leakage of Warburg/IPG mediators into the maternal circulation.
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Affiliation(s)
- G J Burton
- Centre for Trophoblast Research, Department of Physiology, Neuroscience and Development, Physiological Laboratory, Downing Street, Cambridge CBE 3EG, United Kingdom
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Scioscia M, Robillard PY, Hall DR, Rademacher LH, Williams PJ, Rademacher TW. Inositol phosphoglycan P-type in infants of preeclamptic mothers. J Matern Fetal Neonatal Med 2011; 25:193-5. [DOI: 10.3109/14767058.2011.557789] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Scioscia M, Gumaa K, Rademacher TW. The link between insulin resistance and preeclampsia: new perspectives. J Reprod Immunol 2009; 82:100-5. [DOI: 10.1016/j.jri.2009.04.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2009] [Revised: 04/06/2009] [Accepted: 04/20/2009] [Indexed: 12/24/2022]
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