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Prenatal alcohol exposure and offspring liver dysfunction: a systematic review and meta-analysis. Arch Gynecol Obstet 2016; 294:225-31. [DOI: 10.1007/s00404-016-4109-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 04/26/2016] [Indexed: 02/07/2023]
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2
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Ethanol effects on histobiochemical parameters of suckling pups borned from alcoholic rat mothers. COMPARATIVE CLINICAL PATHOLOGY 2016. [DOI: 10.1007/s00580-016-2270-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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3
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Roselló-Lletí E, Tarazón E, Barderas MG, Ortega A, Otero M, Molina-Navarro MM, Lago F, González-Juanatey JR, Salvador A, Portolés M, Rivera M. Heart mitochondrial proteome study elucidates changes in cardiac energy metabolism and antioxidant PRDX3 in human dilated cardiomyopathy. PLoS One 2014; 9:e112971. [PMID: 25397948 PMCID: PMC4232587 DOI: 10.1371/journal.pone.0112971] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Accepted: 10/17/2014] [Indexed: 12/16/2022] Open
Abstract
Background Dilated cardiomyopathy (DCM) is a public health problem with no available curative treatment, and mitochondrial dysfunction plays a critical role in its development. The present study is the first to analyze the mitochondrial proteome in cardiac tissue of patients with DCM to identify potential molecular targets for its therapeutic intervention. Methods and Results 16 left ventricular (LV) samples obtained from explanted human hearts with DCM (n = 8) and control donors (n = 8) were extracted to perform a proteomic approach to investigate the variations in mitochondrial protein expression. The proteome of the samples was analyzed by quantitative differential electrophoresis and Mass Spectrometry. These changes were validated by classical techniques and by novel and precise selected reaction monitoring analysis and RNA sequencing approach increasing the total heart samples up to 25. We found significant alterations in energy metabolism, especially in molecules involved in substrate utilization (ODPA, ETFD, DLDH), energy production (ATPA), other metabolic pathways (AL4A1) and protein synthesis (EFTU), obtaining considerable and specific relationships between the alterations detected in these processes. Importantly, we observed that the antioxidant PRDX3 overexpression is associated with impaired ventricular function. PRDX3 is significantly related to LV end systolic and diastolic diameter (r = 0.73, p value<0.01; r = 0.71, p value<0.01), fractional shortening, and ejection fraction (r = −0.61, p value<0.05; and r = −0.62, p value<0.05, respectively). Conclusion This work could be a pivotal study to gain more knowledge on the cellular mechanisms related to the pathophysiology of this disease and may lead to the development of etiology-specific heart failure therapies. We suggest new molecular targets for therapeutic interventions, something that up to now has been lacking.
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Affiliation(s)
- Esther Roselló-Lletí
- Cardiocirculatory Unit, Health Research Institute Hospital La Fe, Valencia, Spain
| | - Estefanía Tarazón
- Cardiocirculatory Unit, Health Research Institute Hospital La Fe, Valencia, Spain
| | - María G. Barderas
- Department of Vascular Physiopathology, Hospital Nacional de Parapléjicos, SESCAM, Toledo, Spain
| | - Ana Ortega
- Cardiocirculatory Unit, Health Research Institute Hospital La Fe, Valencia, Spain
| | - Manuel Otero
- Cellular and Molecular Cardiology Research Unit, Department of Cardiology and Institute of Biomedical Research, University Clinical Hospital, Santiago de Compostela, Spain
| | | | - Francisca Lago
- Cellular and Molecular Cardiology Research Unit, Department of Cardiology and Institute of Biomedical Research, University Clinical Hospital, Santiago de Compostela, Spain
| | - Jose Ramón González-Juanatey
- Cellular and Molecular Cardiology Research Unit, Department of Cardiology and Institute of Biomedical Research, University Clinical Hospital, Santiago de Compostela, Spain
| | | | - Manuel Portolés
- Cell Biology and Pathology Unit, Health Research Institute Hospital La Fe, Valencia, Spain
| | - Miguel Rivera
- Cardiocirculatory Unit, Health Research Institute Hospital La Fe, Valencia, Spain
- * E-mail:
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Roselló-Lletí E, Tarazón E, Barderas MG, Ortega A, Molina-Navarro MM, Martínez A, Lago F, Martínez-Dolz L, González-Juanatey JR, Salvador A, Portolés M, Rivera M. ATP synthase subunit alpha and LV mass in ischaemic human hearts. J Cell Mol Med 2014; 19:442-51. [PMID: 25382018 PMCID: PMC4407605 DOI: 10.1111/jcmm.12477] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 10/01/2014] [Indexed: 12/14/2022] Open
Abstract
Mitochondrial dysfunction plays a critical role in the development of ischaemic cardiomyopathy (ICM). In this study, the mitochondrial proteome in the cardiac tissue of ICM patients was analysed by quantitative differential electrophoresis (2D-DIGE) and mass spectrometry (MS) for the first time to provide new insights into cardiac dysfunction in this cardiomyopathy. We isolated mitochondria from LV samples of explanted hearts of ICM patients (n = 8) and control donors (n = 8) and used a proteomic approach to investigate the variations in mitochondrial protein expression. We found that most of the altered proteins were involved in cardiac energy metabolism (82%). We focused on ATPA, which is involved in energy production, and dihydrolipoyl dehydrogenase, implicated in substrate utilization, and observed that these molecules were overexpressed and that the changes detected in the processes mediated by these proteins were closely related. Notably, we found that ATPA overexpression was associated with reduction in LV mass (r = −0.74, P < 0.01). We also found a substantial increase in the expression of elongation factor Tu, a molecule implicated in protein synthesis, and PRDX3, involved in the stress response. All of these changes were validated using classical techniques and by using novel and precise selected reaction monitoring analysis and an RNA sequencing approach, with the total heart samples being increased to 24. This study provides key insights that enhance our understanding of the cellular mechanisms related to the pathophysiology of ICM and could lead to the development of aetiology-specific heart failure therapies. ATPA could serve as a molecular target suitable for new therapeutic interventions.
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Affiliation(s)
- Esther Roselló-Lletí
- Cardiocirculatory Unit, Health Research Institute Hospital La Fe, Valencia, Spain
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5
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Ortega A, Roselló-Lletí E, Tarazón E, Molina-Navarro MM, Martínez-Dolz L, González-Juanatey JR, Lago F, Montoro-Mateos JD, Salvador A, Rivera M, Portolés M. Endoplasmic reticulum stress induces different molecular structural alterations in human dilated and ischemic cardiomyopathy. PLoS One 2014; 9:e107635. [PMID: 25226522 PMCID: PMC4166610 DOI: 10.1371/journal.pone.0107635] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 08/20/2014] [Indexed: 12/19/2022] Open
Abstract
Background The endoplasmic reticulum (ER) is a multifunctional organelle responsible for the synthesis and folding of proteins as well as for signalling and calcium storage, that has been linked to the contraction-relaxation process. Perturbations of its homeostasis activate a stress response in diseases such as heart failure (HF). To elucidate the alterations in ER molecular components, we analyze the levels of ER stress and structure proteins in human dilated (DCM) and ischemic (ICM) cardiomyopathies, and its relationship with patient's functional status. Methods and Results We examined 52 explanted human hearts from DCM (n = 21) and ICM (n = 21) subjects and 10 non-failing hearts as controls. Our results showed specific changes in stress (IRE1, p<0.05; p-IRE1, p<0.05) and structural (Reticulon 1, p<0.01) protein levels. The stress proteins GRP78, XBP1 and ATF6 as well as the structural proteins RRBP1, kinectin, and Nogo A and B, were upregulated in both DCM and ICM patients. Immunofluorescence results were concordant with quantified Western blot levels. Moreover, we show a novel relationship between stress and structural proteins. RRBP1, involved in procollagen synthesis and remodeling, was related with left ventricular function. Conclusions In the present study, we report the existence of alterations in ER stress response and shaping proteins. We show a plausible effect of the ER stress on ER structure in a suitable sample of DCM and ICM subjects. Patients with higher values of RRBP1 had worse left ventricular function.
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Affiliation(s)
- Ana Ortega
- Cardiocirculatory Unit, Health Research Institute of La Fe University Hospital, Valencia, Spain
| | - Esther Roselló-Lletí
- Cardiocirculatory Unit, Health Research Institute of La Fe University Hospital, Valencia, Spain
| | - Estefanía Tarazón
- Cardiocirculatory Unit, Health Research Institute of La Fe University Hospital, Valencia, Spain
| | | | - Luis Martínez-Dolz
- Heart Failure and Transplantation Unit, Cardiology Department, La Fe University Hospital, Valencia, Spain
| | - José Ramón González-Juanatey
- Cellular and Molecular Cardiology Research Unit, Department of Cardiology and Institute of Biomedical Research, University Clinical Hospital, Santiago de Compostela, Spain
| | - Francisca Lago
- Cellular and Molecular Cardiology Research Unit, Department of Cardiology and Institute of Biomedical Research, University Clinical Hospital, Santiago de Compostela, Spain
| | | | - Antonio Salvador
- Heart Failure and Transplantation Unit, Cardiology Department, La Fe University Hospital, Valencia, Spain
| | - Miguel Rivera
- Cardiocirculatory Unit, Health Research Institute of La Fe University Hospital, Valencia, Spain
| | - Manuel Portolés
- Cardiocirculatory Unit, Health Research Institute of La Fe University Hospital, Valencia, Spain
- * E-mail:
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6
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Roselló-Lletí E, Alonso J, Cortés R, Almenar L, Martínez-Dolz L, Sánchez-Lázaro I, Lago F, Azorín I, Juanatey JRG, Portolés M, Rivera M. Cardiac protein changes in ischaemic and dilated cardiomyopathy: a proteomic study of human left ventricular tissue. J Cell Mol Med 2013; 16:2471-86. [PMID: 22435364 PMCID: PMC3823441 DOI: 10.1111/j.1582-4934.2012.01565.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The development of heart failure (HF) is characterized by progressive alteration of left ventricle structure and function. Previous works on proteomic analysis in cardiac tissue from patients with HF remain scant. The purpose of our study was to use a proteomic approach to investigate variations in protein expression of left ventricle tissue from patients with ischaemic (ICM) and dilated cardiomyopathy (DCM). Twenty-four explanted human hearts, 12 from patients with ICM and 12 with DCM undergoing cardiac transplantation and six non-diseased donor hearts (CNT) were analysed by 2DE. Proteins of interest were identified by mass spectrometry and validated by Western blotting and immunofluorescence. We encountered 35 differentially regulated spots in the comparison CNT versus ICM, 33 in CNT versus DCM, and 34 in ICM versus DCM. We identified glyceraldehyde 3-phophate dehydrogenase up-regulation in both ICM and DCM, and alpha-crystallin B down-regulation in both ICM and DCM. Heat shock 70 protein 1 was up-regulated only in ICM. Ten of the eleven differentially regulated proteins common to both aetiologies are interconnected as a part of a same network. In summary, we have shown by proteomics analysis that HF is associated with changes in proteins involved in the cellular stress response, respiratory chain and cardiac metabolism. Although we found altered expression of eleven proteins common to both ischaemic and dilated aetiology, we also observed different proteins altered in both groups. Furthermore, we obtained that seven of these eleven proteins are involved in cell death and apoptosis processes, and therefore in HF progression.
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Affiliation(s)
- Esther Roselló-Lletí
- Cardiocirculatory Unit, Research Center, Hospital Universitario La Fe, Valencia, Spain
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Tarazón E, Rivera M, Roselló-Lletí E, Molina-Navarro MM, Sánchez-Lázaro IJ, España F, Montero JA, Lago F, González-Juanatey JR, Portolés M. Heart failure induces significant changes in nuclear pore complex of human cardiomyocytes. PLoS One 2012; 7:e48957. [PMID: 23152829 PMCID: PMC3495918 DOI: 10.1371/journal.pone.0048957] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 10/03/2012] [Indexed: 11/30/2022] Open
Abstract
Aims The objectives of this study were to analyse the effect of heart failure (HF) on several proteins of nuclear pore complex (NPC) and their relationship with the human ventricular function. Methods and Results A total of 88 human heart samples from ischemic (ICM, n = 52) and dilated (DCM, n = 36) patients undergoing heart transplant and control donors (CNT, n = 9) were analyzed by Western blot. Subcellular distribution of nucleoporins was analysed by fluorescence and immunocytochemistry. When we compared protein levels according to etiology, ICM showed significant higher levels of NDC1 (65%, p<0.0001), Nup160 (88%, p<0.0001) and Nup153 (137%, p = 0.004) than those of the CNT levels. Furthermore, DCM group showed significant differences for NDC1 (41%, p<0.0001), Nup160 (65%, p<0.0001), Nup153 (155%, p = 0.006) and Nup93 (88%, p<0.0001) compared with CNT. However, Nup155 and translocated promoter region (TPR) did not show significant differences in their levels in any etiology. Regarding the distribution of these proteins in cell nucleus, only NDC1 showed differences in HF. In addition, in the pathological group we obtained good relationship between the ventricular function parameters (LVEDD and LVESD) and Nup160 (r = −0382, p = 0.004; r = −0.290, p = 0.033; respectively). Conclusions This study shows alterations in specific proteins (NDC1, Nup160, Nup153 and Nup93) that compose NPC in ischaemic and dilated human heart. These changes, related to ventricular function, could be accompanied by alterations in the nucleocytoplasmic transport. Therefore, our findings may be the basis for a new approach to HF management.
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Affiliation(s)
- Estefanía Tarazón
- Cardiocirculatory Unit, Research Center, Hospital Universitario La Fe, Valencia, Spain
| | - Miguel Rivera
- Cardiocirculatory Unit, Research Center, Hospital Universitario La Fe, Valencia, Spain
| | - Esther Roselló-Lletí
- Cardiocirculatory Unit, Research Center, Hospital Universitario La Fe, Valencia, Spain
| | | | - Ignacio José Sánchez-Lázaro
- Heart Failure and Transplantation Unit, Cardiology Department, Hospital Universitario La Fe, Valencia, Spain
| | - Francisco España
- Biochemistry Unit, Research Center, Hospital Universitario La Fe, Valencia, Spain
| | | | - Francisca Lago
- Cellular and Molecular Cardiology Research Unit, Department of Cardiology and Institute of Biomedical Research, University Clinical Hospital, Santiago de Compostela, Spain
| | - José Ramón González-Juanatey
- Cellular and Molecular Cardiology Research Unit, Department of Cardiology and Institute of Biomedical Research, University Clinical Hospital, Santiago de Compostela, Spain
| | - Manuel Portolés
- Cell Biology and Pathology Unit, Research Center, Hospital Universitario La Fe, Valencia, Spain
- * E-mail:
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8
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Roselló-Lletí E, Rivera M, Cortés R, Azorín I, Sirera R, Martínez-Dolz L, Hove L, Cinca J, Lago F, González-Juanatey JR, Salvador A, Portolés M. Influence of heart failure on nucleolar organization and protein expression in human hearts. Biochem Biophys Res Commun 2012; 418:222-8. [PMID: 22244875 DOI: 10.1016/j.bbrc.2011.12.151] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Accepted: 12/31/2011] [Indexed: 10/14/2022]
Abstract
We investigate for the first time the influence of heart failure (HF) on nucleolar organization and proteins in patients with ischemic (ICM) or dilated cardiomyopathy (DCM). A total of 71 human hearts from ICM (n=38) and DCM (n=27) patients, undergoing heart transplantation and control donors (n=6), were analysed by western-blotting, RT-PCR and cell biology methods. When we compared protein levels according to HF etiology, nucleolin was increased in both ICM (117%, p<0.05) and DCM (141%, p<0.01). Moreover, mRNA expression were also upregulated in ICM (1.46-fold, p<0.05) and DCM (1.70-fold, p<0.05. Immunofluorescence studies showed that the highest intensity of nucleolin was into nucleolus (p<0.0001), and it was increased in pathological hearts (p<0.0001). Ultrastructure analysis by electron microscopy showed an increase in the nucleus and nucleolus size in ICM (17%, p<0.05 and 131%, p<0.001) and DCM (56%, p<0.01 and 69%, p<0.01). Nucleolar organization was influenced by HF irrespective of etiology, increasing fibrillar centers (p<0.001), perinucleolar chromatin (p<0.01) and dense fibrillar components (p<0.01). Finally, left ventricular function parameters were related with nucleolin levels in ischemic hearts (p<0.0001). The present study demonstrates that HF influences on morphology and organization of nucleolar components, revealing changes in the expression and in the levels of nucleolin protein.
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Affiliation(s)
- Esther Roselló-Lletí
- Cardiocirculatory Unit, Research Center, Hospital Universitario La Fe, Valencia, Spain
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9
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Abstract
Eukaryotic cells comprise a set of organelles, surrounded by membranes with a unique composition, which is maintained by a complex synthesis and transport system. Cells also synthesize the proteins destined for secretion. Together, these processes are known as the secretory pathway or exocytosis. In addition, many molecules can be internalized by cells through a process called endocytosis. Chronic and acute alcohol (ethanol) exposure alters the secretion of different essential products, such as hormones, neurotransmitters and others in a variety of cells, including central nervous system cells. This effect could be due to a range of mechanisms, including alcohol-induced alterations in the different steps involved in intracellular transport, such as glycosylation and vesicular transport along cytoskeleton elements. Moreover, alcohol consumption during pregnancy disrupts developmental processes in the central nervous system. No single mechanism has proved sufficient to account for these effects, and multiple factors are likely involved. One such mechanism indicates that ethanol also perturbs protein trafficking. The purpose of this review is to summarize our understanding of how ethanol exposure alters the trafficking of proteins in different cell systems, especially in central nervous system cells (neurons and astrocytes) in adult and developing brains.
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Evrard SG, Brusco A. Ethanol Effects on the Cytoskeleton of Nerve Tissue Cells. ADVANCES IN NEUROBIOLOGY 2011. [DOI: 10.1007/978-1-4419-6787-9_29] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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11
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Fofana B, Yao XH, Rampitsch C, Cloutier S, Wilkins JA, Nyomba BLG. Prenatal alcohol exposure alters phosphorylation and glycosylation of proteins in rat offspring liver. Proteomics 2009; 10:417-34. [DOI: 10.1002/pmic.200800969] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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12
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Cortés R, Roselló-Lletí E, Rivera M, Martínez-Dolz L, Salvador A, Azorín I, Portolés M. Influence of heart failure on nucleocytoplasmic transport in human cardiomyocytes. Cardiovasc Res 2009; 85:464-72. [PMID: 19819881 DOI: 10.1093/cvr/cvp336] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
AIMS The role of the cell nucleus in the development of heart failure (HF) is unknown, so the objectives of this study were to analyse the effect of HF on nucleocytoplasmic transport and density of the nuclear pore complex (NPC). METHODS AND RESULTS A total of 51 human heart samples from ischaemic (ICM, n = 30) and dilated (DCM, n = 16) patients undergoing heart transplantation and control donors (CNT, n = 5) were analysed by western blotting. Subcellular distribution of proteins and NPC were analysed by fluorescence and electron microscopy, respectively. When we compared nucleocytoplasmic machinery protein levels according to aetiology of HF, ICM showed higher levels of importins [(IMP-beta3) (150%, P < 0.0001), IMP-alpha2 (69%, P = 0.001)] and exportins [EXP-1 (178%, P < 0.0001), EXP-4 (81%, P = 0.006)] than those of the CNT group. Furthermore, DCM also showed significant differences for IMP-beta3 (192%, P < 0.0001), IMP-alpha2 (52%, P = 0.025), and EXP-1 (228%, P < 0.0001). RanGTPase-activating proteins (RanGAP1 and RaGAP1u) were increased in ICM (76%, P = 0.005; 51%, P = 0.012) and DCM (41%, P = 0.042; 50%, P = 0.029). Furthermore, subcellular distribution of nucleocytoplasmic machinery was not altered in pathological hearts. Finally, nucleoporin (Nup) p62 was increased in ICM (80%) and DCM (109%) (P < 0.001 and P = 0.024). Nuclear pore density was comparable in pathological and CNT hearts, and ICM showed a low diameter (P = 0.005) and different structural configuration of NPC. CONCLUSION This study shows the effect of HF on nucleocytoplasmic trafficking machinery, evidenced by higher levels of importins, exportins, Ran regulators and Nup p62 in ischaemic and dilated human hearts than those in the controls, with NPCs acquiring a different configuration and morphology in ICM.
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Affiliation(s)
- Raquel Cortés
- Cardiocirculatory Unit, Research Center, Hospital Universitario La Fe, Valencia, Spain
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13
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Dinu CZ, Bale SS, Zhu G, Dordick JS. Tubulin encapsulation of carbon nanotubes into functional hybrid assemblies. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2009; 5:310-315. [PMID: 19148890 DOI: 10.1002/smll.200801434] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- Cerasela Zoica Dinu
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Nanotechnology Center, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
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14
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Marín MP, Tomas M, Esteban-Pretel G, Megías L, López-Iglesias C, Egea G, Renau-Piqueras J. Chronic ethanol exposure induces alterations in the nucleocytoplasmic transport in growing astrocytes. J Neurochem 2008; 106:1914-28. [DOI: 10.1111/j.1471-4159.2008.05514.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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15
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Clustering and colocalization in transmission immunoelectron microscopy: A brief review. Micron 2008; 39:1-6. [DOI: 10.1016/j.micron.2007.09.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2007] [Revised: 09/12/2007] [Accepted: 09/14/2007] [Indexed: 11/18/2022]
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16
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Green ML, Singh AV, Zhang Y, Nemeth KA, Sulik KK, Knudsen TB. Reprogramming of genetic networks during initiation of the Fetal Alcohol Syndrome. Dev Dyn 2007; 236:613-31. [PMID: 17200951 DOI: 10.1002/dvdy.21048] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Fetal Alcohol Spectrum Disorders (FASD) are birth defects that result from maternal alcohol use. We used a non a priori approach to prioritize candidate pathways during alcohol-induced teratogenicity in early mouse embryos. Two C57BL/6 substrains (B6J, B6N) served as the basis for study. Dosing pregnant dams with alcohol (2x 2.9 g/kg ethanol spaced 4 hr on day 8) induced FASD in B6J at a higher incidence than B6N embryos. Counter-exposure to PK11195 (4 mg/kg) significantly protected B6J embryos but slightly promoted FASD in B6N embryos. Microarray transcript profiling was performed on the embryonic headfold 3 hr after the first maternal alcohol injection (GEO data series accession GSE1074). This analysis revealed metabolic and cellular reprogramming that was substrain-specific and/or PK11195-dependent. Mapping ethanol-responsive KEGG (Kyoto Encyclopedia of Genes and Genomes) pathways revealed down-regulation of ribosomal proteins and proteasome, and up-regulation of glycolysis and pentose phosphate pathway in B6N embryos; and significant up-regulation of tight junction, focal adhesion, adherens junction, and regulation of the actin cytoskeleton (and near-significant up-regulation of Wnt signaling and apoptosis) pathways in both substrains. Expression networks constructed computationally from these altered genes identified entry points for EtOH at several hubs (MAPK1, ALDH3A2, CD14, PFKM, TNFRSF1A, RPS6, IGF1, EGFR, PTEN) and for PK11195 at AKT1. Our findings are consistent with the growing view that developmental exposure to alcohol alters common signaling pathways linking receptor activation to cytoskeletal reorganization. The programmatic shift in cell motility and metabolic capacity further implies cell signals and responses that are integrated by the mitochondrial recognition site for PK11195.
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Affiliation(s)
- Maia L Green
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
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17
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Camarillo C, Kumar LS, Bake S, Sohrabji F, Miranda RC. Ethanol regulates angiogenic cytokines during neural development: evidence from an in vitro model of mitogen-withdrawal-induced cerebral cortical neuroepithelial differentiation. Alcohol Clin Exp Res 2007; 31:324-35. [PMID: 17250626 PMCID: PMC2909106 DOI: 10.1111/j.1530-0277.2006.00308.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND Heavy alcohol consumption during pregnancy can cause significant mental retardation and brain damage. We recently showed that ethanol depletes reserve cerebral cortical stem cell capacity. Moreover, proliferating neuroepithelial cells exposed to ethanol were resistant to subsequent retinoic acid-induced differentiation. Emerging evidence suggests that cytokines play a crucial growth-promoting role in the developing neural tube. METHODS We cultured murine cortical neurosphere cultures in control or ethanol-supplemented mitogenic medium, to mimic alcohol exposure during the period of neuroepithelial proliferation. Cultures were then treated with a step-wise mitogen-withdrawal, integrin-activation model to mimic subsequent phases of neuronal migration and early differentiation. We examined the impact of alcohol exposure during neurogenesis on the secretion of inflammatory and growth-promoting cytokines. RESULTS Cortical neurosphere cultures exhibit increasingly complex differentiation phenotypes in response to step-wise mitogen-withdrawal and laminin exposure. Some inflammation-modulating cytokines were secreted independent of differentiation state. However, chemotactic cytokines were specifically secreted at high levels, as a function of differentiation stage. monocyte chemotactic protein-1, vascular endothelial growth factor-A, and interleukin (IL)-10 were coordinately decreased during differentiation compared with neuroepithelial proliferation, while granulocyte macrophage-colony stimulating factor (GM-CSF) was induced during differentiation, compared with the neuroepithelial proliferation period. Ethanol exposure during the period of neuroepithelial proliferation prevented the early differentiation-induced increase in GM-CSF while inducing differentiation-associated increase in IL-12 secretion. CONCLUSION Embryonic cerebral cortical neuroepithelial-derived precursors secrete high levels of several angiogenic and neural-growth-promoting cytokines as they differentiate into neurons. Our data collectively suggest that ethanol exposure during the period of neuroepithelial proliferation significantly disrupts cytokine signals that are required for the support of emerging neurovascular networks, and the maintenance of neural stem cell beds.
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Affiliation(s)
- Cynthia Camarillo
- Texas A&M Health Science Ctr., College of Medicine, Dept. Neuroscience and Experimental Therapeutics, 228 Reynolds Medical Bldg., College Station, TX 77843-1114
| | - Leena S Kumar
- Texas A&M Health Science Ctr., College of Medicine, Dept. Neuroscience and Experimental Therapeutics, 228 Reynolds Medical Bldg., College Station, TX 77843-1114
| | - Shameena Bake
- Texas A&M Health Science Ctr., College of Medicine, Dept. Neuroscience and Experimental Therapeutics, 228 Reynolds Medical Bldg., College Station, TX 77843-1114
| | - Farida Sohrabji
- Texas A&M Health Science Ctr., College of Medicine, Dept. Neuroscience and Experimental Therapeutics, 228 Reynolds Medical Bldg., College Station, TX 77843-1114
- Center for Environmental and Rural Health, Texas A&M University
| | - Rajesh C. Miranda
- Texas A&M Health Science Ctr., College of Medicine, Dept. Neuroscience and Experimental Therapeutics, 228 Reynolds Medical Bldg., College Station, TX 77843-1114
- Center for Environmental and Rural Health, Texas A&M University
- Corresponding author:
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Braza-Boïls A, Tomás M, Marín MP, Megías L, Sancho-Tello M, Fornas E, Renau-Piqueras J. GLYCOSYLATION IS ALTERED BY ETHANOL IN RAT HIPPOCAMPAL CULTURED NEURONS. Alcohol Alcohol 2006; 41:494-504. [PMID: 16751217 DOI: 10.1093/alcalc/agl044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
AIMS Glycoproteins, such as adhesion molecules and growth factors, participate in the regulation of nervous system development. Ethanol affects the synthesis, intracellular transport, distribution, and secretion of N-glycoproteins in different cell types, including astrocytes and hepatocytes, suggesting alterations in the glycosylation process. We analysed the effect of exposure to low doses of ethanol (30 mm, 7 days) on glycosylation in cultured hippocampal neurons. METHODS Neurons were incubated for short (5 min) and long (90 min) periods with the radioactively labelled carbohydrate precursors 2-deoxy-glucose, N-acetyl-D-mannosamine and mannose. The uptake and metabolism of these precursors, as well as the radioactivity distribution in protein gels, were analysed. The levels of the glucose transporters GLUT1 and GLUT3 were also determined. RESULTS Ethanol exposure reduces the synthesis of proteins, DNA and RNA and decreased the uptake of mannose, but not of 2-deoxy-glucose and N-acetyl-D-mannosamine, and it increased the protein levels of both glucose transporters. Moreover, it altered the carbohydrate moiety of several proteins. Finally, alcohol treatment results in an increment of cell surface glycoconjugates containing terminal non-reduced mannose. CONCLUSIONS Alcohol-induced alterations in glycosylation of proteins in neurons could be a key mechanism involved in the teratogenic effects of alcohol exposure on brain development.
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Affiliation(s)
- Aitana Braza-Boïls
- Section of Cell Biology and Pathology, Center for Investigation, Hospital La Fe, Valencia, Spain
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Tomás M, Marín P, Megías L, Egea G, Renau-Piqueras J. Ethanol perturbs the secretory pathway in astrocytes. Neurobiol Dis 2005; 20:773-84. [PMID: 15953732 DOI: 10.1016/j.nbd.2005.05.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2005] [Revised: 05/04/2005] [Accepted: 05/10/2005] [Indexed: 10/25/2022] Open
Abstract
Ethanol exposure induces retention of glycoproteins in growing astrocytes. We examined the intracellular sites at which this retention occurs and investigated whether this effect is accompanied by alterations in the Golgi complex and microtubular system. We studied the effects of ethanol on the Golgi complex structure, as well as on the secretory pathway functionality by monitoring both the transport of the VSV-G protein and the protein levels of several molecules involved in the regulation of this pathway. Ethanol was found to delay VSV-G transport, modify Golgi complex morphology, and reduce the number of secretory vesicles. Moreover, ethanol affected the levels of mannosidase II, p58, betaCOP, rbet1, and several Rab GTPases. It also affected microtubule organization and polymerization and the levels of the motor proteins kinesin and dynein. Most of these effects were dose-dependent. These alterations, together with those previously reported concerning biosynthesis of glycoconjugates, provide novel insights into how ethanol impairs brain development.
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Affiliation(s)
- Mónica Tomás
- Sección de Biología y Patología Celular, Centro de Investigación, Hospital Universitario La Fe, Av. Campanar 21, E-46009 Valencia, Spain
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