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Cha HH, Hwang JR, Sung JH, Choi SJ, Oh SY, Roh CR. Changes in calcium channel proteins according to magnesium sulfate administration in placentas from pregnancies with pre-eclampsia or fetal growth restriction. J Investig Med 2018; 67:319-326. [PMID: 30415221 PMCID: PMC6581081 DOI: 10.1136/jim-2018-000844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2018] [Indexed: 11/06/2022]
Abstract
We aimed to evaluate the changes in plasma membrane Ca2+-ATPase (PMCA) and sarcoendoplasmic reticulum CA2+-ATPase (SERCA-2) according to the antepartal magnesium sulfate (MgSO4) administration in the placentas from pregnancies with pre-eclampsia (PE) or fetal growth restriction (FGR). Pregnant women were classified as follows: (group 1) pregnancies without PE or FGR (n=16), (group 2) pregnancies with PE or FGR but without MgSO4 administration (n=14), and (group 3) pregnancies with PE or FGR and with MgSO4 administration (n=28). We observed the localization of PMCA and SERCA-2 in placentas and compared its expression among 3 groups. And we observed its expression in BeWo cells following treatment with MgSO4 and CoCl2. PMCA staining was more observed in the basal membrane, whereas SERCA-2 staining was observed predominantly under the microvillous membrane. SERCA-2 expression was significantly increased in group 3 compared with that in group 1. Considering the gestational age at delivery, PMCA expression was increased in group 2 and group 3 compared with that in group 1 after 36 weeks of gestation. SERCA-2 was increased in group 3, but not in group 2 compared with that in group 1 after 36 weeks of gestation. In BeWo cells, MgSO4 treatment increased PMCA and SERCA-2 expression. PMCA expression was influenced by gestational age at delivery, and SERCA-2 expression was increased in the presence of PE and antepartal MgSO4 administration. This indicates that antepartal MgSO4 administration has a greater influence on SERCA-2 than PMCA.
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Affiliation(s)
- Hyun-Hwa Cha
- Department of Obstetrics and Gynecology, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jae-Ryoung Hwang
- Sungkynkwan University School of Medicine, Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - Ji Hee Sung
- Department of Obstetrics and Gynecology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Suk-Joo Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Soo-Young Oh
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Cheong-Rae Roh
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Abad C, Vallejos C, De Gregorio N, Díaz P, Chiarello DI, Mendoza M, Piñero S, Proverbio T, Botana D, Rojas P, Riquelme G, Proverbio F, Marín R. Na⁺, K⁺-ATPase and Ca²⁺-ATPase activities in basal and microvillous syncytiotrophoblast membranes from preeclamptic human term placenta. Hypertens Pregnancy 2014; 34:65-79. [PMID: 25356531 DOI: 10.3109/10641955.2014.973038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE The aim of this study is to evaluate the effect of preeclampsia on the level of lipid peroxidation, activity and expression of both plasma membrane Ca(2+)- and Na(+), K(+)-ATPases in syncytiotrophoblast. METHODS The level of lipid peroxidation was estimated by measuring TBARS. ATPase activities were quantified by a colorimetric method measuring the amount of inorganic phosphate during the assay. Expression of Ca(2+)- and Na(+), K(+)-ATPases in syncytiotrophoblast plasma membranes and term placenta tissue sections was investigated using Western blot and immunohistochemistry, respectively. RESULTS Our results show a higher level of lipid peroxidation of syncytiotrophoblast plasma membranes from preeclamptic, as compared to uncomplicated pregnant women. Preeclampsia also significantly reduced the activity of Ca(2+)- and Na(+), K(+)-ATPases; however, expression of both ATPases was unaffected. CONCLUSION Our findings suggest that the reduction of Ca(2+)- and Na(+), K(+)-ATPase activities during preeclampsia could be at least partially due to an increased level of lipid peroxidation of the syncytiotrophoblast plasma membranes.
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Affiliation(s)
- Cilia Abad
- Laboratorio de Bioenergética Celular, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas (IVIC) , Caracas , Venezuela , and
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Elad D, Levkovitz R, Jaffa AJ, Desoye G, Hod M. Have We Neglected the Role of Fetal Endothelium in Transplacental Transport? Traffic 2013; 15:122-6. [DOI: 10.1111/tra.12130] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 10/10/2013] [Accepted: 10/15/2013] [Indexed: 12/26/2022]
Affiliation(s)
- David Elad
- Department of Biomedical Engineering, Faculty of Engineering; Tel Aviv University; Tel Aviv 69978 Israel
| | - Riki Levkovitz
- Department of Biomedical Engineering, Faculty of Engineering; Tel Aviv University; Tel Aviv 69978 Israel
| | - Ariel J. Jaffa
- Ultrasound Unit in Obstetrics and Gynecology, Lis Maternity Hospital; Tel Aviv Sourasky Medical Center; Tel Aviv 64239 Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv 69978 Israel
| | - Gernot Desoye
- Department of Obstetrics and Gynecology; Medical University of Graz; Graz A-8036 Austria
| | - Moshe Hod
- Department of Obstetrics and Gynecology; Helen Schneider Hospital for Women, Rabin Medical Center; Petach Tikva 9100 Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv 69978 Israel
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Wang F, Wang L, Xu Z, Liang G. Identification and analysis of multi-protein complexes in placenta. PLoS One 2013; 8:e62988. [PMID: 23638173 PMCID: PMC3639281 DOI: 10.1371/journal.pone.0062988] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 03/27/2013] [Indexed: 12/13/2022] Open
Abstract
Placental malfunction induces pregnancy disorders which contribute to life-threatening complications for both the mother and the fetus. Identification and characterization of placental multi-protein complexes is an important step to integratedly understand the protein-protein interaction networks in placenta which determine placental function. In this study, blue native/sodium dodecyl sulfate polyacrylamide gel electrophoresis (BN/SDS-PAGE) and Liquid chromatography-tandem mass spectrometry (LC-MS/MS) were used to screen the multi-protein complexes in placenta. 733 unique proteins and 34 known and novel heterooligomeric multi-protein complexes including mitochondrial respiratory chain complexes, integrin complexes, proteasome complexes, histone complex, and heat shock protein complexes were identified. A novel protein complex, which involves clathrin and small conductance calcium-activated potassium (SK) channel protein 2, was identified and validated by antibody based gel shift assay, co-immunoprecipitation and immunofluorescence staining. These results suggest that BN/SDS-PAGE, when integrated with LC-MS/MS, is a very powerful and versatile tool for the investigation of placental protein complexes. This work paves the way for deeper functional characterization of the placental protein complexes associated with pregnancy disorders.
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Affiliation(s)
- Fuqiang Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China
- State Key Laboratory of Reproductive Medicine, Analysis Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ling Wang
- State Key Laboratory of Reproductive Medicine, Analysis Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhiyang Xu
- State Key Laboratory of Reproductive Medicine, Analysis Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Gaolin Liang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China
- * E-mail:
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Bedu-Addo G, Meese S, Mockenhaupt FP. An ATP2B4 polymorphism protects against malaria in pregnancy. J Infect Dis 2013; 207:1600-3. [PMID: 23444010 DOI: 10.1093/infdis/jit070] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Polymorphisms of ATP2B4 encoding an ubiquitous Ca(2+) pump protect against severe childhood malaria. We assessed the influence of a main polymorphism (rs10900585) on malaria among 834 delivering Ghanaian women. In homozygous primiparae, the odds of placental Plasmodium falciparum infection were reduced by 64%. No influence of the polymorphism on parasite density, low birth weight, or preterm delivery was discernible. However, malarial anemia was greatly reduced in primiparous carriers of the variant allele, paralleling the reduced impact of malaria on hemoglobin levels in this group. A common ATP2B4 polymorphism protects against malaria in pregnancy and related maternal anemia, suggesting ATP2B4 variant associated protection not to be limited to severe childhood malaria.
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Affiliation(s)
- George Bedu-Addo
- Department of Medicine, School of Medical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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Haché S, Takser L, LeBellego F, Weiler H, Leduc L, Forest JC, Giguère Y, Masse A, Barbeau B, Lafond J. Alteration of calcium homeostasis in primary preeclamptic syncytiotrophoblasts: effect on calcium exchange in placenta. J Cell Mol Med 2011; 15:654-67. [PMID: 20178461 PMCID: PMC3922387 DOI: 10.1111/j.1582-4934.2010.01039.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Preeclampsia (PE) is characterized by maternal hypertension, proteinuria, oedema and, in 30% of cases, by intrauterine growth retardation. Causes are still unknown; however, epidemiological and clinical studies have suggested alterations in maternal calcium metabolism. We suggested that in PE, calcium transport by the syncytiotrophoblast (ST) is disturbed. From total placental tissues, we studied the expression of: calcium channels (TRPV5, TRPV6 [transient receptor potential vanilloid]), calcium binding proteins (CaBP-9K, CaBP-28K), plasma membrane calcium ATPase (PMCA)1,2,3,4 pumps, ATP synthase, genes implicated in Ca2+ release [inositol-1,4,5-triphosphate receptor (IP3R)1,2,3; Ryanodine receptor (RyR)1,2,3] and replenishment (SERCA1,2,3 [sarcoendoplasmic reticulum Ca2+ ATPases]) from endoplasmic reticulum, channels implicated in mitochondrial Ca2+ accumulation (VDAC1,2,3 [voltage-dependent anion channels]) and a marker of oxidative stress (hOGG1 [Human 8-oxoguanine-DNA glycosylase 1]), as well as the influence of these variations on calcium transport in primary ST cultures. The mRNA and protein levels were thereby examined by real-time PCR and Western blot analysis, respectively, in two different groups of pregnant women with similar gestational age: a normal group (n= 16) and a PE group (n= 8), diagnosed by a clinician. Our study showed a significant decrease in calcium transport by the ST cultured from preeclamptic placentas. We found a significant (P < 0.05) decrease in mRNA levels of TRPV5, TRPV6, CaBP-9K, CaBP-28K, PMCA1, PMCA4, ATP synthase, IP3R1, IP3R2, RyR1, RyR2 and RyR3 in PE group compared to normal one. We also noted a significant decrease in protein levels of TRPV5, TRPV6, CaBP-9K, CaBP-28K and PMCA1/4 in PE group. In contrast, SERCA1, SERCA2, SERCA3, VDAC3 and hOGG1 mRNA expressions were significantly increased in PE placentas. Calcium homeostasis and transport through placenta is compromised in preeclamptic pregnancies and it appears to be affected by a lack of ATP and an excess of oxidative stress.
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Affiliation(s)
- S Haché
- Biomed Research Center, Department of Biological Sciences, University of Quebec at Montreal, Quebec, Canada
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Riquelme G, Vallejos C, de Gregorio N, Morales B, Godoy V, Berrios M, Bastías N, Rodríguez C. Lipid rafts and cytoskeletal proteins in placental microvilli membranes from preeclamptic and IUGR pregnancies. J Membr Biol 2011; 241:127-40. [PMID: 21573936 DOI: 10.1007/s00232-011-9369-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Accepted: 04/27/2011] [Indexed: 12/17/2022]
Abstract
Intrauterine growth restriction (IUGR) and preeclampsia (PE) are leading causes of perinatal and maternal morbidity and mortality. Previously we reported the expression of lipid rafts in classical microvillous membrane (MVM) and light microvillous membrane (LMVM), two subdomains in apical membrane from the human placental syncytiotrophoblast (hSTB), which constitute the epithelium responsible for maternal-fetal transport. Here the aim was to study the raft and cytoskeletal proteins from PE and IUGR. Microdomains from MVM and LMVM were tested with raft markers (placental alkaline phosphatase, lipid ganglioside, and annexin 2) and a nonraft marker (hTf-R). No changes were detected with those markers in whole purified apical membranes in normal, PE, and IUGR pregnancies; however, their patterns of distribution in lipid rafts were different in PE and IUGR. Cholesterol depletion modified their segregation, confirming their presence in lipid rafts, although unlike normal placenta, in these pathologies there is only one type of microdomain. Additionally, the cytoskeleton proteins actin, ezrin, and cytokeratin-7 showed clear differences between normal and pathological membranes. Cytokeratin-7 expression decreased to 50% in PE, and the distribution between LMVM and MVM (~43 and 57%, respectively) changed in both PE and IUGR, in contrast with the asymmetrical enrichment obtained in normal LMVM (~62%). In conclusion, lipid rafts from IUGR and PE have different features compared to rafts from normal placentae, and this is associated with alterations in the expression and distribution of cytoskeletal proteins.
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Affiliation(s)
- Gloria Riquelme
- Depto. de Fisiología y Biofísica, Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Casilla 70005, Santiago 7, Chile.
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Zhang Q, Schulenborg T, Tan T, Lang B, Friauf E, Fecher-Trost C. Proteome analysis of a plasma membrane-enriched fraction at the placental feto-maternal barrier. Proteomics Clin Appl 2010; 4:538-49. [DOI: 10.1002/prca.200900048] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Revised: 12/17/2009] [Accepted: 12/18/2009] [Indexed: 12/15/2022]
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Abstract
The human placental syncytiotrophoblast (hSTB) is a polarized epithelial structure, that forms the main barrier to materno-fetal exchange. The chloride (Cl(-)) channels in other epithelial tissues contribute to several functions, such as maintenance of the membrane potential, volume regulation, absorption and secretion. Additionally, the contributions of Cl(-) channels to these functions are demonstrated by certain diseases and knock-out animal models. There are multiple lines of evidence for the presence of Cl(-) channels in the hSTB, which could contribute to different placental functions. However, both the mechanism by which these channels are involved in the physiology of the placenta, and their molecular identities are still unclear. Furthermore, a correlation between altered Cl(-) channels functions and pathological pregnancies is beginning to emerge. This review summarizes recent developments on conductive placental chloride transport, and discusses its potential implications for placental physiology.
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