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Xiao F, Nguyen NUN, Wang P, Li S, Hsu CC, Thet S, Kimura W, Luo X, Lam NT, Menendez-Montes I, Elhelaly W, Cardoso AC, Pereira AHM, Singh R, Sadayappan S, Kanchwala M, Xing C, Ladha FA, Hinson JT, Hajjar RJ, Hill JA, Sadek HA. Adducin Regulates Sarcomere Disassembly During Cardiomyocyte Mitosis. Circulation 2024. [PMID: 38708635 DOI: 10.1161/circulationaha.122.059102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 03/29/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND Recent interest in understanding cardiomyocyte cell cycle has been driven by potential therapeutic applications in cardiomyopathy. However, despite recent advances, cardiomyocyte mitosis remains a poorly understood process. For example, it is unclear how sarcomeres are disassembled during mitosis to allow the abscission of daughter cardiomyocytes. METHODS Here, we use a proteomics screen to identify adducin, an actin capping protein previously not studied in cardiomyocytes, as a regulator of sarcomere disassembly. We generated many adeno-associated viruses and cardiomyocyte-specific genetic gain-of-function models to examine the role of adducin in neonatal and adult cardiomyocytes in vitro and in vivo. RESULTS We identify adducin as a regulator of sarcomere disassembly during mammalian cardiomyocyte mitosis. α/γ-adducins are selectively expressed in neonatal mitotic cardiomyocytes, and their levels decline precipitously thereafter. Cardiomyocyte-specific overexpression of various splice isoforms and phospho-isoforms of α-adducin in identified Thr445/Thr480 phosphorylation of a short isoform of α-adducin as a potent inducer of neonatal cardiomyocyte sarcomere disassembly. Concomitant overexpression of this α-adducin variant along with γ-adducin resulted in stabilization of the adducin complex and persistent sarcomere disassembly in adult mice, which is mediated by interaction with α-actinin. CONCLUSIONS These results highlight an important mechanism for coordinating cytoskeletal morphological changes during cardiomyocyte mitosis.
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Affiliation(s)
- Feng Xiao
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
| | - Ngoc Uyen Nhi Nguyen
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
| | - Ping Wang
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
| | - Shujuan Li
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
| | - Ching-Cheng Hsu
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
| | - Suwannee Thet
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
| | - Wataru Kimura
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
- Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Japan (W.K.)
| | - Xiang Luo
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
| | - Nicholas T Lam
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
| | - Ivan Menendez-Montes
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
| | - Waleed Elhelaly
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
| | - Alisson Campos Cardoso
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
- Biosciences National Laboratory, Brazilian Center for Research in Energy and Materials, Campinas (A.C.C., A.H.M.P.)
| | - Ana Helena Macedo Pereira
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
- Biosciences National Laboratory, Brazilian Center for Research in Energy and Materials, Campinas (A.C.C., A.H.M.P.)
| | - Rohit Singh
- Center for Cardiovascular Research, Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati College of Medicine, OH (R.S., S.S.)
- Amgen Research, Department of Cardiometabolic Disorders, Amgen, South San Francisco, CA (R.S.)
| | - Sakthivel Sadayappan
- Center for Cardiovascular Research, Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati College of Medicine, OH (R.S., S.S.)
| | - Mohammed Kanchwala
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas. (M.K., C.X.)
| | - Chao Xing
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas. (M.K., C.X.)
- Lyda Hill Department of Bioinformatics, University of Texas Southwestern Medical Center, Dallas. (C.X.)
- O'Donnell School of Public Health, University of Texas Southwestern Medical Center, Dallas. (C.X.)
| | - Feria A Ladha
- University of Connecticut Health Center, Farmington (F.A.L., J.T.H.)
| | - J Travis Hinson
- University of Connecticut Health Center, Farmington (F.A.L., J.T.H.)
- Jackson Laboratory for Genomic Medicine, Farmington, CT (J.T.H.)
| | - Roger J Hajjar
- Gene & Cell Therapy Institute, Mass General Brigham, Cambridge, MA (R.J.H.)
| | - Joseph A Hill
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
- Moss Heart Center, University of Texas Southwestern Medical Center, Dallas. (J.A.H.)
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas. (J.A.H., H.A.S.)
| | - Hesham A Sadek
- Departments of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas. (F.X., N.U.N.N., P.W., S.L., C.-C.H., S.T., W.K., X.L., N.T.L., I.M.-M., W.E., A.C.C., A.H.M.P., J.A.H., H.A.S.)
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas. (J.A.H., H.A.S.)
- Department of Biophysics, University of Texas Southwestern Medical Center, Dallas. (H.A.S.)
- Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas. (H.A.S.)
- Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain (H.A.S.)
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Borin A, Coimbra LD, Bispo-Dos-Santos K, Naciuk FF, Fontoura M, Simeoni CL, Gomes GV, Amorim MR, Gravina HD, Shimizu JF, Passos ASC, de Oliveira IM, de Carvalho AC, Cardoso AC, Parise PL, Toledo-Teixeira DA, Sotorilli GE, Persinoti GF, Claro IM, Sabino EC, Alborghetti MR, Rocco SA, Franchini KG, de Souza WM, Oliveira PSL, Cunha TM, Granja F, Proença-Módena JL, Trivella DBB, Bruder M, Cordeiro AT, Marques RE. Identification and characterization of the anti-SARS-CoV-2 activity of cationic amphiphilic steroidal compounds. Virulence 2022; 13:1031-1048. [PMID: 35734825 PMCID: PMC9235892 DOI: 10.1080/21505594.2022.2085793] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The ongoing COVID-19 pandemic caused a significant loss of human lives and a worldwide decline in quality of life. Treatment of COVID-19 patients is challenging, and specific treatments to reduce COVID-19 aggravation and mortality are still necessary. Here, we describe the discovery of a novel class of epiandrosterone steroidal compounds with cationic amphiphilic properties that present antiviral activity against SARS-CoV-2 in the low micromolar range. Compounds were identified in screening campaigns using a cytopathic effect-based assay in Vero CCL81 cells, followed by hit compound validation and characterization. Compounds LNB167 and LNB169 were selected due to their ability to reduce the levels of infectious viral progeny and viral RNA levels in Vero CCL81, HEK293, and HuH7.5 cell lines. Mechanistic studies in Vero CCL81 cells indicated that LNB167 and LNB169 inhibited the initial phase of viral replication through mechanisms involving modulation of membrane lipids and cholesterol in host cells. Selection of viral variants resistant to steroidal compound treatment revealed single mutations on transmembrane, lipid membrane-interacting Spike and Envelope proteins. Finally, in vivo testing using the hACE2 transgenic mouse model indicated that SARS-CoV-2 infection could not be ameliorated by LNB167 treatment. We conclude that anti-SARS-CoV-2 activities of steroidal compounds LNB167 and LNB169 are likely host-targeted, consistent with the properties of cationic amphiphilic compounds that modulate host cell lipid biology. Although effective in vitro, protective effects were cell-type specific and did not translate to protection in vivo, indicating that subversion of lipid membrane physiology is an important, yet complex mechanism involved in SARS-CoV-2 replication and pathogenesis.
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Affiliation(s)
- Alexandre Borin
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil.,Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Laís D Coimbra
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil.,Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Karina Bispo-Dos-Santos
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil.,Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Fabrício F Naciuk
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - Marina Fontoura
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil.,Department of Cellular and Structural Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Camila L Simeoni
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Giovanni V Gomes
- Center for Research in Inflammatory Diseases (CRID), Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Mariene R Amorim
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil.,Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Humberto D Gravina
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - Jacqueline Farinha Shimizu
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - Amanda S C Passos
- Center for Research in Inflammatory Diseases (CRID), Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Isadora M de Oliveira
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - Ana Carolina de Carvalho
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil.,Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Alisson Campos Cardoso
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - Pierina L Parise
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil.,Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Daniel A Toledo-Teixeira
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil.,Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Giuliana E Sotorilli
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil.,Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Gabriela F Persinoti
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), São Paulo, Brazil
| | - Ingra Morales Claro
- Instituto de Medicina Tropical, Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil
| | - Ester C Sabino
- Instituto de Medicina Tropical, Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil
| | - Marcos R Alborghetti
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - Silvana A Rocco
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - Kleber G Franchini
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - William M de Souza
- World Reference Center for Emerging Viruses and Arboviruses and Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
| | - Paulo S L Oliveira
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - Thiago M Cunha
- Center for Research in Inflammatory Diseases (CRID), Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Fabiana Granja
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil.,Biodiversity Research Center, Federal University of Roraima (UFRR), Boa Vista, Brazil
| | - José Luiz Proença-Módena
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil.,Experimental Medicine Research Cluster, University of Campinas (UNICAMP), Campinas, Brazil
| | - Daniela B B Trivella
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - Marjorie Bruder
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - Artur T Cordeiro
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
| | - Rafael Elias Marques
- Brazilian Biosciences National Laboratory - LNBio, Brazilian Center for Research in Energy and Materials - CNPEM, Campinas, Brazil
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Li S, Nguyen NUN, Xiao F, Menendez-Montes I, Nakada Y, Tan WLW, Anene-Nzelu CG, Foo RS, Thet S, Cardoso AC, Wang P, Elhelaly WM, Lam NT, Pereira AHM, Hill JA, Sadek HA. Mechanism of Eccentric Cardiomyocyte Hypertrophy Secondary to Severe Mitral Regurgitation. Circulation 2020; 141:1787-1799. [PMID: 32272846 DOI: 10.1161/circulationaha.119.043939] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Primary valvular heart disease is a prevalent cause of morbidity and mortality in both industrialized and developing countries. Although the primary consequence of valvular heart disease is myocardial dysfunction, treatment of valvular heart diseases centers around valve repair or replacement rather than prevention or reversal of myocardial dysfunction. This is particularly evident in primary mitral regurgitation (MR), which invariably results in eccentric hypertrophy and left ventricular (LV) failure in the absence of timely valve repair or replacement. The mechanism of LV dysfunction in primary severe MR is entirely unknown. METHODS Here, we developed the first mouse model of severe MR. Valvular damage was achieved by severing the mitral valve leaflets and chords with iridectomy scissors, and MR was confirmed by echocardiography. Serial echocardiography was performed to follow up LV morphology and systolic function. Analysis of cardiac tissues was subsequently performed to evaluate valve deformation, cardiomyocyte morphology, LV fibrosis, and cell death. Finally, dysregulated pathways were assessed by RNA-sequencing analysis and immunofluorescence. RESULTS In the ensuing 15 weeks after the induction of MR, gradual LV dilatation and dysfunction occurred, resulting in severe systolic dysfunction. Further analysis revealed that severe MR resulted in a marked increase in cardiac mass and increased cardiomyocyte length but not width, with electron microscopic evidence of sarcomere disarray and the development of sarcomere disruption. From a mechanistic standpoint, severe MR resulted in activation of multiple components of both the mammalian target of rapamycin and calcineurin pathways. Inhibition of mammalian target of rapamycin signaling preserved sarcomeric structure and prevented LV remodeling and systolic dysfunction. Immunohistochemical analysis uncovered a differential pattern of expression of the cell polarity regulator Crb2 (crumbs homolog 2) along the longitudinal axis of cardiomyocytes and close to the intercalated disks in the MR hearts. Electron microscopy images demonstrated a significant increase in polysome localization in close proximity to the intercalated disks and some areas along the longitudinal axis in the MR hearts. CONCLUSIONS These results indicate that LV dysfunction in response to severe MR is a form of maladaptive eccentric cardiomyocyte hypertrophy and outline the link between cell polarity regulation and spatial localization protein synthesis as a pathway for directional cardiomyocyte growth.
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Affiliation(s)
- Shujuan Li
- Department of Pediatric Cardiology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China (S.L.).,NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou, China (S.L.).,Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas
| | - Ngoc Uyen Nhi Nguyen
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas
| | - Feng Xiao
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas
| | - Ivan Menendez-Montes
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas
| | - Yuji Nakada
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas
| | - Wilson Lek Wen Tan
- Cardiovascular Research Institute, National University of Singapore (W.L.W.T., C.G.A.-N., R.S.F.).,Genome Institute of Singapore (W.L.W.T., C.G.A.-N., R.S.F.)
| | - Chukwuemeka George Anene-Nzelu
- Cardiovascular Research Institute, National University of Singapore (W.L.W.T., C.G.A.-N., R.S.F.).,Genome Institute of Singapore (W.L.W.T., C.G.A.-N., R.S.F.)
| | - Roger S Foo
- Cardiovascular Research Institute, National University of Singapore (W.L.W.T., C.G.A.-N., R.S.F.).,Genome Institute of Singapore (W.L.W.T., C.G.A.-N., R.S.F.)
| | - Suwannee Thet
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas
| | - Alisson Campos Cardoso
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas.,Brazilian Biosciences National Laboratory, Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo (A.C.C., A.H.M.P.)
| | - Ping Wang
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas
| | - Waleed M Elhelaly
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas
| | - Nicholas T Lam
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas
| | - Ana Helena Macedo Pereira
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas.,Brazilian Biosciences National Laboratory, Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo (A.C.C., A.H.M.P.)
| | - Joseph A Hill
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas.,Department of Molecular Biology (J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas
| | - Hesham A Sadek
- Department of Internal Medicine, Division of Cardiology (S.L., N.U.N.N., F.X., I.M.-M., Y.N., S.T., A.C.C., P.W., W.M.E., N.T.L., A.H.M.P., J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas.,Center for Regenerative Science and Medicine (H.A.S.), University of Texas Southwestern Medical Center, Dallas.,Department of Molecular Biology (J.A.H., H.A.S.), University of Texas Southwestern Medical Center, Dallas
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4
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Grizzetti B, Liquete C, Pistocchi A, Vigiak O, Zulian G, Bouraoui F, De Roo A, Cardoso AC. Relationship between ecological condition and ecosystem services in European rivers, lakes and coastal waters. Sci Total Environ 2019; 671:452-465. [PMID: 30933801 PMCID: PMC6509285 DOI: 10.1016/j.scitotenv.2019.03.155] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 03/08/2019] [Accepted: 03/10/2019] [Indexed: 05/05/2023]
Abstract
We quantify main ecosystem services (i.e. the contribution of ecosystems to human well-being) provided by rivers, lakes, coastal waters and connected ecosystems (riparian areas and floodplains) in Europe, including water provisioning, water purification, erosion prevention, flood protection, coastal protection, and recreation. We show European maps of ecosystem service capacity, flow (actual use), sustainability and efficiency. Then we explore the relationship between the services and the ecosystem condition at the European scale, considering the ecological status of aquatic ecosystems, reported under the EU Water Framework Directive, as a measure of the ecosystem integrity and biodiversity. Our results indicate that a higher delivery of the regulating and cultural ecosystem services analysed is mostly correlated with better conditions of aquatic ecosystems. Conversely, the use of provisioning services can result in pressures on the ecosystem. This suggests the importance of maintaining good ecological condition of aquatic ecosystems to ensure the delivery of ecosystem services in the future. These results at the continental scale, although limited to the ecosystem services under analysis, might be relevant to consider when investing in the protection and restoration of aquatic ecosystems called for by the current EU water policy and Biodiversity Strategy and by the United Nations Sustainable Development Goals.
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Affiliation(s)
- B Grizzetti
- European Commission Joint Research Centre (JRC), Italy.
| | - C Liquete
- European Commission Joint Research Centre (JRC), Italy; European Commission DG Environment, Brussels, Belgium
| | - A Pistocchi
- European Commission Joint Research Centre (JRC), Italy
| | - O Vigiak
- European Commission Joint Research Centre (JRC), Italy; Ludwig-Maximilians-Universitaet Muenchen, Department of Geography, Munich, Germany
| | - G Zulian
- European Commission Joint Research Centre (JRC), Italy
| | - F Bouraoui
- European Commission Joint Research Centre (JRC), Italy
| | - A De Roo
- European Commission Joint Research Centre (JRC), Italy
| | - A C Cardoso
- European Commission Joint Research Centre (JRC), Italy
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Cardoso AC, Perez RM, de Figueiredo-Mendes C, Carvalho Leite N, Moraes-Coelho HS, Villela-Nogueira CA. Prevalence and predictive factors of moderate/severe liver steatosis in chronic hepatitis C (CHC) infected patients evaluated with controlled attenuation parameter (CAP). J Viral Hepat 2018; 25:1244-1250. [PMID: 29768686 DOI: 10.1111/jvh.12930] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 04/16/2018] [Indexed: 12/15/2022]
Abstract
A novel controlled attenuation parameter (CAP) using FibroScan® has been developed for assessment of liver steatosis. The aim was to evaluate the frequency and associated factors for moderate/severe steatosis evaluated by CAP in CHC patients submitted to transient elastography (TE) by FibroScan® . CHC patients underwent TE with CAP evaluation. The classification of steatosis was defined as: CAP < 222 dB/m = S0; CAP ≥ 222 dB/m and <233dB/m = S1; ≥233 dB/m < 290dB/m = S2 and >= 290 dB/m = S3. The prevalence of moderate/severe steatosis (CAP ≥ S2) and the related independent factors were identified by a logistic regression analysis. A significance level of 5% was adopted. 1104 CHC patients, 85% genotype-1 were included (mean age 55 ± 11 years; 46% male, mean BMI 25 ± 4 Kg/m2 ). Systemic arterial hypertension and type 2 diabetes mellitus prevalences were 39% and 17%, respectively. Liver stiffness measurement ≥ 9.5 kPa was observed in 39% of patients and steatosis was identified in 50% (S1 = 7%, S2 = 28% and S3 = 15%). The variables independently associated with moderate/severe steatosis were: male gender (OR=1.35; P = .037; 95% CI:1.01-1.81); systemic arterial hypertension (OR=1.57; P = .002; 95% CI:1.17-2.10) and BMI (OR=1.17; P < .01;95% CI:1.12-1.22). In conclusion, when CAP was adopted as a tool to detect steatosis, genotype 1 CHC patients presented a high prevalence of moderate/advanced steatosis. In these patients, liver steatosis was associated mostly to metabolic factors (arterial hypertension and high BMI).
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Affiliation(s)
- A C Cardoso
- Hepatology Unit, Hospital Universitário Clementino Fraga Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - R M Perez
- Hepatology Unit, Hospital Universitário Clementino Fraga Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,Gastroenterology Department, University of the State of Rio de Janeiro, Rio de Janeiro, Brazil.,D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil
| | | | - N Carvalho Leite
- Hepatology Unit, Hospital Universitário Clementino Fraga Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - H S Moraes-Coelho
- Hepatology Unit, Hospital Universitário Clementino Fraga Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - C A Villela-Nogueira
- Hepatology Unit, Hospital Universitário Clementino Fraga Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Karlas T, Petroff D, Sasso M, Fan JG, Mi YQ, de Lédinghen V, Kumar M, Lupsor-Platon M, Han KH, Cardoso AC, Ferraioli G, Chan WK, Wong VWS, Myers RP, Chayama K, Friedrich-Rust M, Beaugrand M, Shen F, Hiriart JB, Sarin SK, Badea R, Lee HW, Marcellin P, Filice C, Mahadeva S, Wong GLH, Crotty P, Masaki K, Bojunga J, Bedossa P, Keim V, Wiegand J. Impact of controlled attenuation parameter on detecting fibrosis using liver stiffness measurement. Aliment Pharmacol Ther 2018; 47:989-1000. [PMID: 29446106 DOI: 10.1111/apt.14529] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 11/19/2017] [Accepted: 01/01/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Liver fibrosis is often accompanied by steatosis, particularly in patients with non-alcoholic fatty liver disease (NAFLD), and its non-invasive characterisation is of utmost importance. Vibration-controlled transient elastography is the non-invasive method of choice; however, recent research suggests that steatosis may influence its diagnostic performance. Controlled Attenuation Parameter (CAP) added to transient elastography enables simultaneous assessment of steatosis and fibrosis. AIM To determine how to use CAP in interpreting liver stiffness measurements. METHODS This is a secondary analysis of data from an individual patient data meta-analysis on CAP. The main exclusion criteria for the current analysis were unknown aetiology, unreliable elastography measurement and data already used for the same research question. Aetiology-specific liver stiffness measurement cut-offs were determined and used to estimate positive and negative predictive values (PPV/NPV) with logistic regression as functions of CAP. RESULTS Two thousand and fifty eight patients fulfilled the inclusion criteria (37% women, 18% NAFLD/NASH, 42% HBV, 40% HCV, 51% significant fibrosis ≥ F2). Youden optimised cut-offs were only sufficient for ruling out cirrhosis (NPV of 98%). With sensitivity and specificity-optimised cut-offs, NPV for ruling out significant fibrosis was moderate (70%) and could be improved slightly through consideration of CAP. PPV for significant fibrosis and cirrhosis were 68% and 55% respectively, despite specificity-optimised cut-offs for cirrhosis. CONCLUSIONS Liver stiffness measurement values below aetiology-specific cut-offs are very useful for ruling out cirrhosis, and to a lesser extent for ruling out significant fibrosis. In the case of the latter, Controlled Attenuation Parameter can improve interpretation slightly. Even if cut-offs are very high, liver stiffness measurements are not very reliable for ruling in fibrosis or cirrhosis.
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Schuck DC, Pagani E, Basei FL, Marin TM, Brohem CA, Cardoso AC, Lorencini M. Simultaneous performance of skin allergy tests in two organ microfluidic chips. Toxicol Lett 2017. [DOI: 10.1016/j.toxlet.2017.08.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Xavier-Neto J, Carvalho M, Pascoalino BDS, Cardoso AC, Costa ÂMS, Pereira AHM, Santos LN, Saito Â, Marques RE, Smetana JHC, Consonni SR, Bandeira C, Costa VV, Bajgelman MC, de Oliveira PSL, Cordeiro MT, Gonzales Gil LHV, Pauletti BA, Granato DC, Paes Leme AF, Freitas-Junior L, Holanda de Freitas CBM, Teixeira MM, Bevilacqua E, Franchini K. Hydrocephalus and arthrogryposis in an immunocompetent mouse model of ZIKA teratogeny: A developmental study. PLoS Negl Trop Dis 2017; 11:e0005363. [PMID: 28231241 PMCID: PMC5322881 DOI: 10.1371/journal.pntd.0005363] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/27/2017] [Indexed: 11/18/2022] Open
Abstract
The teratogenic mechanisms triggered by ZIKV are still obscure due to the lack of a suitable animal model. Here we present a mouse model of developmental disruption induced by ZIKV hematogenic infection. The model utilizes immunocompetent animals from wild-type FVB/NJ and C57BL/6J strains, providing a better analogy to the human condition than approaches involving immunodeficient, genetically modified animals, or direct ZIKV injection into the brain. When injected via the jugular vein into the blood of pregnant females harboring conceptuses from early gastrulation to organogenesis stages, akin to the human second and fifth week of pregnancy, ZIKV infects maternal tissues, placentas and embryos/fetuses. Early exposure to ZIKV at developmental day 5 (second week in humans) produced complex manifestations of anterior and posterior dysraphia and hydrocephalus, as well as severe malformations and delayed development in 10.5 days post-coitum (dpc) embryos. Exposure to the virus at 7.5-9.5 dpc induces intra-amniotic hemorrhage, widespread edema, and vascular rarefaction, often prominent in the cephalic region. At these stages, most affected embryos/fetuses displayed gross malformations and/or intrauterine growth restriction (IUGR), rather than isolated microcephaly. Disrupted conceptuses failed to achieve normal developmental landmarks and died in utero. Importantly, this is the only model so far to display dysraphia and hydrocephalus, the harbinger of microcephaly in humans, as well as arthrogryposis, a set of abnormal joint postures observed in the human setting. Late exposure to ZIKV at 12.5 dpc failed to produce noticeable malformations. We have thus characterized a developmental window of opportunity for ZIKV-induced teratogenesis encompassing early gastrulation, neurulation and early organogenesis stages. This should not, however, be interpreted as evidence for any safe developmental windows for ZIKV exposure. Late developmental abnormalities correlated with damage to the placenta, particularly to the labyrinthine layer, suggesting that circulatory changes are integral to the altered phenotypes.
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Affiliation(s)
- Jose Xavier-Neto
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
- * E-mail: (JXN); (KF)
| | - Murilo Carvalho
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Bruno dos Santos Pascoalino
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Alisson Campos Cardoso
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Ângela Maria Sousa Costa
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Ana Helena Macedo Pereira
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Luana Nunes Santos
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Ângela Saito
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Rafael Elias Marques
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Juliana Helena Costa Smetana
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Silvio Roberto Consonni
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Carla Bandeira
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Vivian Vasconcelos Costa
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, Brazil
| | - Marcio Chaim Bajgelman
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Paulo Sérgio Lopes de Oliveira
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Marli Tenorio Cordeiro
- CPqAM-Fiocruz. Federal University of Pernambuco, Av. Professor Moraes Rego s/n, Cidade Universitária, Recife, PE, Brazil
| | - Laura Helena Vega Gonzales Gil
- CPqAM-Fiocruz. Federal University of Pernambuco, Av. Professor Moraes Rego s/n, Cidade Universitária, Recife, PE, Brazil
| | - Bianca Alves Pauletti
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Daniela Campos Granato
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Adriana Franco Paes Leme
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | - Lucio Freitas-Junior
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
| | | | - Mauro Martins Teixeira
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, Brazil
| | - Estela Bevilacqua
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Kleber Franchini
- Brazilian Biosciences National Laboratory, LNBio, Rua Giuseppe Máximo Scolfaro, 10.000, Polo II de Alta Tecnologia de Campinas, Campinas, SP, Brazil
- * E-mail: (JXN); (KF)
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Cardoso AC, Pereira AHM, Ambrosio ALB, Consonni SR, Rocha de Oliveira R, Bajgelman MC, Dias SMG, Franchini KG. FAK Forms a Complex with MEF2 to Couple Biomechanical Signaling to Transcription in Cardiomyocytes. Structure 2016; 24:1301-1310. [PMID: 27427476 DOI: 10.1016/j.str.2016.06.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 05/06/2016] [Accepted: 06/04/2016] [Indexed: 11/27/2022]
Abstract
Focal adhesion kinase (FAK) has emerged as a mediator of mechanotransduction in cardiomyocytes, regulating gene expression during hypertrophic remodeling. However, how FAK signaling is relayed onward to the nucleus is unclear. Here, we show that FAK interacts with and regulates myocyte enhancer factor 2 (MEF2), a master cardiac transcriptional regulator. In cardiomyocytes exposed to biomechanical stimulation, FAK accumulates in the nucleus, binds to and upregulates the transcriptional activity of MEF2 through an interaction with the FAK focal adhesion targeting (FAT) domain. In the crystal structure (2.9 Å resolution), FAT binds to a stably folded groove in the MEF2 dimer, known to interact with regulatory cofactors. FAK cooperates with MEF2 to enhance the expression of Jun in cardiomyocytes, an important component of hypertrophic response to mechanical stress. These findings underscore a connection between the mechanotransduction involving FAK and transcriptional regulation by MEF2, with potential relevance to the pathogenesis of cardiac disease.
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Affiliation(s)
- Alisson Campos Cardoso
- Brazilian National Laboratory for Biosciences, Center for Research in Energy and Materials, Campinas, São Paulo 13084-971, Brazil
| | - Ana Helena Macedo Pereira
- Brazilian National Laboratory for Biosciences, Center for Research in Energy and Materials, Campinas, São Paulo 13084-971, Brazil
| | - Andre Luis Berteli Ambrosio
- Brazilian National Laboratory for Biosciences, Center for Research in Energy and Materials, Campinas, São Paulo 13084-971, Brazil
| | - Silvio Roberto Consonni
- Brazilian National Laboratory for Biosciences, Center for Research in Energy and Materials, Campinas, São Paulo 13084-971, Brazil
| | - Renata Rocha de Oliveira
- Brazilian National Laboratory for Biosciences, Center for Research in Energy and Materials, Campinas, São Paulo 13084-971, Brazil
| | - Marcio Chain Bajgelman
- Brazilian National Laboratory for Biosciences, Center for Research in Energy and Materials, Campinas, São Paulo 13084-971, Brazil
| | - Sandra Martha Gomes Dias
- Brazilian National Laboratory for Biosciences, Center for Research in Energy and Materials, Campinas, São Paulo 13084-971, Brazil
| | - Kleber Gomes Franchini
- Brazilian National Laboratory for Biosciences, Center for Research in Energy and Materials, Campinas, São Paulo 13084-971, Brazil; Department of Internal Medicine, School of Medicine, University of Campinas, Campinas, São Paulo 13081-970, Brazil.
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10
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Lopes JF, Dias JM, Cardoso AC, Silva CIV. The water quality of the Ria de Aveiro lagoon, Portugal: from the observations to the implementation of a numerical model. Mar Environ Res 2005; 60:594-628. [PMID: 15996728 DOI: 10.1016/j.marenvres.2005.05.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2004] [Revised: 04/28/2005] [Accepted: 05/05/2005] [Indexed: 05/03/2023]
Abstract
Ria de Aveiro is a very important area of the Portuguese coast, which has been under an increasing anthropogenic pressure for several decades and, contributes to the degradation of the lagoon's water quality. This work presents both a characterisation of the water quality of the Ria de Aveiro lagoon, using physical, chemical and biological experimental data, and an implementation of a numerical model for the water quality of the lagoon. The ultimate goal is to obtain an accurate numerical model able to simulate major water quality features of the lagoon under the influence of different forcing conditions. Data analysis reveals good correlations between the salinity and almost all the water quality variables as well as between the different variables. The maximum biochemical oxygen demand concentration (BOD) depends on the light intensity, the temperature and the river inputs. The main vulnerable areas of the lagoon, from the water quality point of view, seem to be the far end of the main channels, where low dissolved oxygen concentration (DO) and high BOD concentrations are observed. The numerical model of the Ria de Aveiro has reproduced both winter-spring and spring-summer events related to the lagoon water quality as well as its main pattern. Both data and modelling results show that the BOD5 concentrations (where the subscript '5' means that the BOD measurements were conducted for five days, without inhibitor of nitrification) are driven by the river influence, during the winter-spring period, and by the biological activity during the spring-summer period. The DO concentrations show high values in the spring-summer period and smaller concentrations in the winter-spring period at the far end of the lagoon. The application of the model to the study of scenarios has demonstrated the role of nutrients and light in the phytoplankton growth, the relationship between DO and phytoplankton concentrations, as well as the effect of the BOD degradation in the ammonia (NH4) regeneration.
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Affiliation(s)
- J F Lopes
- CESAM, Departamento de Física, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
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11
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Heiskanen AS, van de Bund W, Cardoso AC, Nóges P. Towards good ecological status of surface waters in Europe--interpretation and harmonisation of the concept. Water Sci Technol 2004; 49:169-177. [PMID: 15195435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The Water Framework Directive (WFD) is a new legislative framework to manage, use, protect, and restore surface water and groundwater resources and coastal waters in the European Union (EU). The aim is to ensure sustainable water management and to reach good water quality by 2015. The assessment of the ecological status and setting of the practical management goals require several steps. The process has started with the characterisation of the river basins including identification of surface water bodies and types, and identification of significant anthropogenic pressures and impacts. The water bodies will be classified in five quality classes (high, good, moderate, poor, bad) based on the Ecological Quality Ratio, which is a ratio between reference conditions and measured status of the biological quality elements. The normative criteria for high, good and moderate ecological status described in the WFD need to be made operational because those will be used to set the practical quality targets for surface water management. National ecological assessment systems and classifications will be harmonised through the WFD intercalibration exercise in order to ensure an equal level of ambition in achieving good surface waters status all over Europe.
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Affiliation(s)
- A S Heiskanen
- European Commission, Directorate General Joint Research Centre, Institute of Environment and Sustainability, Inland and Marine Waters Unit, TP 290, I-21020 Ispra, VA, Italy.
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12
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Bonilha L, Marques EL, Carelli EF, Fernandes YB, Cardoso AC, Maldaum MV, Borges G. Risk factors and outcome in 100 patients with aneurysmal subarachnoid hemorrhage. Arq Neuropsiquiatr 2001; 59:676-80. [PMID: 11593263 DOI: 10.1590/s0004-282x2001000500004] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Clinical and surgical outcome of patients with subarachnoid hemorrhage (SAH) due to ruptured aneurysm were assessed in comparison to pre-operative data and risk factors such as previous medical history, clinical presenting condition, CT findings and site of bleeding. METHODS We evaluated 100 consecutive patients with aneurysmal SAH. Gender, color, history of hypertension, smoking habit, site and size of aneurysm, admittance and before surgery Hunt Hess scale, need for cerebro-spinal fluid shunt, presence of complications during the surgical procedure, Glasgow Outcome Scale, presence of vasospasm and of rebleeding were assessed and these data matched to outcome. For statistical analysis, we applied the chi-squared test or Fisher's test using the pondered kappa coefficient. Kruskal-Wallis test was used for comparison of continue variables. Tendency of proportion was analyzed through Cochran-Armitage test. Significance level adopted was 5%. RESULTS Patients studied were mainly white, female, without previous history of hypertension and non-smokers. Upon hospital admittance, grade 2 of Hunt-Hess scale was most frequently observed (34%), while grade 3 of Fisher scale was the most prevalent. Single aneurysms were most frequent at anterior circulation, between 12 and 24 mm. The most frequent Glasgow Outcome Scale observed was 5 (60%). Hunt Hess upon the moment of surgery and presence of complications during surgical procedure showed positive correlation with clinical outcome (p=0.00002 and p=0.001, respectively). Other variables were not significantly correlated to prognosis. Tendency of proportion was observed between Hunt-Hess scale and Fisher scale. CONCLUSION Among variables such as epidemiological data, previous medical history and presenting conditions of patients with ruptured aneurysms, the Hunt-Hess scale upon the moment of surgery and the presence of surgical adversities are statistically related to degree of disability.
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Affiliation(s)
- L Bonilha
- Division of Neurosurgery, Department of Neurology, Faculty of Medical Sciences, State University of Campinas, Campinas, SP, Brazil
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Pepe M, Giardino C, Borsani G, Cardoso AC, Chiaudani G, Premazzi G, Rodari E, Zilioli E. Relationship between apparent optical properties and photosynthetic pigments in the sub-alpine Lake Iseo. Sci Total Environ 2001; 268:31-45. [PMID: 11315745 DOI: 10.1016/s0048-9697(00)00691-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The aim of the present study was the evaluation of methods for estimating the content of bio-physical parameters in lake water on the basis of spectral reflectance measured above water surface, in particular the estimation of chlorophyll-a (chl-a) concentrations. Data sets considered refer to some sampling point located in the sub-alpine meso-eutrophic Lake Iseo, surveyed six times over the period March-July and once in November 1998, as these months were very important for the characterization of the springtime algal bloom, which affect the lake waters yearly. At each point station, limnological observations (chlorophyll, total suspended solids, Secchi disk depth) were conducted simultaneously with optical measurements. The latter consisted of water leaving radiance measured by means of a spectroradiometer above the water surface; moreover, a standard reflector radiance was also measured to obtain the water reflectance. Reflectance spectra were transformed according to two well-documented models and correlated to water quality parameters, to investigate their performances as retrieval algorithms under different conditions and referring to different analytical methods. Results outline the sensitivity of the models to chl-a concentrations, different phytoplankton composition, and the sampling depth.
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Affiliation(s)
- M Pepe
- Remote Sensing Department, IRRS-CNR, Milan, Italy
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14
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Cardoso AC, Canabarro S, Myers SL. Dental erosion: diagnostic-based noninvasive treatment. Pract Periodontics Aesthet Dent 2000; 12:223-8; quiz 230. [PMID: 11404963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
Lesions that result from dental erosion can be difficult to recognize--particularly when abrasion and attrition are also present. Consequently, dental erosion is often misdiagnosed and mistreated by radical restorative modalities that compromise the vitality of the pulp. This article provides clinicians with knowledge concerning the diagnosis of the complex lesions of dental wear and demonstrates the conservative treatment of this condition. Two cases that exhibit marked tooth wear in anterior teeth and their subsequent restoration utilizing occlusal principles and composite resin are presented.
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Affiliation(s)
- A C Cardoso
- University of Santa Catarina, Department of Stomatology-Division of Occlusion, Floreanôpolis, S.C. 88012-200, Brazil.
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Abstract
STUDY DESIGN Four cadavers had cervical foraminotomies performed at noncontiguous levels using either the standard open technique or the microendoscopic technique. OBJECTIVES To evaluate the feasibility of using a minimally invasive technique for posterior decompression of cervical disc disease. SUMMARY OF BACKGROUND DATA Even though the anterior approach is more commonly performed for the treatment of cervical disc disease, the posterior approach has distinct advantages in selected cases of foraminal stenosis and posterolateral disc herniation. Current technique, however, requires extensive muscle dissection, and is, therefore, subject to significant morbidity. METHODS Each of four cadavers had posterior cervical foraminotomies performed using either the MICROENDOSCOPIC (MED) technique, or the standard open technique. Three noncontiguous levels were decompressed using one technique, and the other technique was used for the adjacent contralateral decompression. Each specimen was then evaluated with postoperative myelogram/CT and open dissection. Laminotomy size, length of root decompressed, and percentage of facet removed were measured. RESULTS Average vertical diameter decompression and percentage of facet removed were significantly greater for the MED technique than for the open technique. Transverse diameter of the laminotomy area and the average length of decompressed root were not significantly different between the techniques. CONCLUSION Posterior cervical foraminotomy, using the microendoscopic technique, is technically feasible and may be applicable to the treatment of foraminal stenosis and laterally located cervical disc herniation. Studies in live animals are currently examining techniques for hemostasis.
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Affiliation(s)
- S W Roh
- Department of Neurosurgery, University of Florida, Gainesville, USA
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Wen HT, Rhoton AL, de Oliveira E, Cardoso AC, Tedeschi H, Baccanelli M, Marino R. Microsurgical anatomy of the temporal lobe: part 1: mesial temporal lobe anatomy and its vascular relationships as applied to amygdalohippocampectomy. Neurosurgery 1999; 45:549-91; discussion 591-2. [PMID: 10493377 DOI: 10.1097/00006123-199909000-00028] [Citation(s) in RCA: 126] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE We review the anatomy of the mesial temporal lobe region, establishing the relationships among the intraventricular, extraventricular, and surrounding vascular structures and their angiographic characterization. We also demonstrate the clinical application of these anatomic landmarks in an anatomic temporal lobectomy plus amygdalohippocampectomy. METHODS Fifty-two adult cadaveric hemispheres and 12 adult cadaveric heads were studied, using a magnification ranging from 3x to 40x, after perfusion of the arteries and veins with colored latex. RESULTS The intraventricular elements are the hippocampus, fimbria, amygdala, and choroidal fissure; the extraventricular elements are the uncus and parahippocampal and dentate gyri. The uncus has an anterior segment, an apex, and a posterior segment that has an inferior and a posteromedial surface; the uncus is related medially to cisternal elements and laterally to intraventricular elements. The anterior segment is related to the proximal sylvian fissure, internal carotid artery, proximal M1 segment of the middle cerebral artery, proximal cisternal anterior choroidal artery, and amygdala. The apex is related to the oculomotor nerve, uncal recess, and amygdala; the posteromedial surface is related to the P2A segment of the posterior cerebral artery inferiorly, to the distal cisternal anterior choroidal artery superiorly, and to the head of the hippocampus and amygdala intraventricularly. The choroidal fissure is located between the thalamus and fimbria; it begins at the inferior choroidal point behind the head of the hippocampus and constitutes the medial wall of the posterior two-thirds of the temporal horn. CONCLUSION Not only is the knowledge of these relations useful to angiographically characterize the mesial temporal region, but it has also proven to be of extreme value during microsurgeries involving this region.
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Affiliation(s)
- H T Wen
- Institute of Neurological Sciences, São Paulo, Brazil
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Abstract
STATEMENT OF THE PROBLEM Gold screw loosening is a frequent problem that affects dental implants. PURPOSE This study determined the effect of spring washers on gold screw displacements during applied removal torque in dental implants. MATERIAL AND METHODS A 3-unit fixed partial denture was cast in semiprecious alloy and fixed to 2 dental implants with gold-retaining screws. Implants were embedded in acrylic resin and restrained from movement. A miniature load sensor was attached to a torque controller handpiece to accurately measure the time and torque needed to completely loosen the gold screws. Rotational displacements were calculated for 4 experimental setups, involving washers placed on (a) both, (b) the mesial, (c) the distal, and (d) no implants. Screw displacement data were compared between implants in all 4 combinations by means of paired t tests. RESULTS Gold screws with underlying conical spring washers underwent on average up to 35% (14.1 microm) more rotational displacement during applied removal torque than those without washers. CONCLUSION Inclusion of a conical spring washer significantly increased the amount of rotational displacement needed to completely loosen an implant gold retaining screw.
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Affiliation(s)
- T W Korioth
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, Minneapolis, MN 55455, USA.
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Versluis A, Korioth TW, Cardoso AC. Numerical analysis of a dental implant system preloaded with a washer. Int J Oral Maxillofac Implants 1999; 14:337-41. [PMID: 10379106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
Gold screw loosening is a problem that frequently affects dental implants. The application of a preload has been the main means of preventing loosening. However, this measure has not been able to eliminate its occurrence. In this study the effect of a washer in a Brånemark-type implant on the loosening conditions of the retaining screw was investigated using a finite element simulation. The simulation indicated that a washer may significantly increase the tolerance of a screw against loosening. This is accomplished by increasing the tolerance of the implant against deformation. The addition of a customized washer to a dental implant system may offer a very simple and inexpensive solution for the persistent problem of screw loosening.
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Affiliation(s)
- A Versluis
- Minnesota Dental Research Center for Biomaterials and Biomechanics, Minneapolis 55455, USA.
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19
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Cyrne L, Guerreiro P, Cardoso AC, Rodrigues-Pousada C, Soares H. The Tetrahymena chaperonin subunit CCT eta gene is coexpressed with CCT gamma gene during cilia biogenesis and cell sexual reproduction. FEBS Lett 1996; 383:277-83. [PMID: 8925913 DOI: 10.1016/0014-5793(96)00240-2] [Citation(s) in RCA: 103] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We report here the cloning and the characterization of the T. pyriformis CCT eta gene (TpCCT eta) and also a partial sequence of the corresponding T. thermophila gene (TtCCT eta). The TpCCt eta gene encodes a protein sharing a 60.3% identity with the mouse CCT eta. We have studied the expression of these genes in Tetrahymena exponentially growing cells, cells regenerating their cilia for different periods and during different stages of the cell sexual reproduction. These genes have similar patterns of expression to those of the previously identified TpCCt gamma gene. Indeed, the Tetrahymena CCT eta and CCT gamma genes are up-regulated at 60-120 min of cilia recovery, and in conjugation when vegetative growth was resumed and cell division took place. Our results seem to indicate that both CCT subunits play an important role in the biogenesis of the newly synthesized cilia of Tetrahymena and during its cell division.
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Affiliation(s)
- L Cyrne
- Laboratório de Genética Molecular, Instituto Gulbenkian de Ciência, Portugal
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20
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Grando LJ, Tames DR, Cardoso AC, Gabilan NH. In vitro study of enamel erosion caused by soft drinks and lemon juice in deciduous teeth analysed by stereomicroscopy and scanning electron microscopy. Caries Res 1996; 30:373-8. [PMID: 8877092 DOI: 10.1159/000262345] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The erosion caused in vitro by cola-type and guaraná-type beverages (the latter is a soft drink sold in Brazil), and a canned lemon juice on the enamel of human deciduous teeth was analyzed. Morphological analysis of affected enamel was done using stereomicroscopy and scanning electron microscopy (SEM). The harmful effect of all test products on deciduous enamel was clearly demonstrated. Stereomicroscopy showed loss of gloss and an alteration in normal color of enamel, with irregular loss of dental tissue in variable degrees. Such a loss became more serious as the time of incubation increased. Different degrees of solubilization of enamel prisms were demonstrated by SEM, affecting initially the sheaths and the heads of prisms and later their tails. Areas of erosion increased in proportion to the time of incubation. All the products showed a great erosive potential on human deciduous dental enamel.
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Cardoso AC, Spinelli Filho P. Clinical and laboratory techniques for repair of fractured porcelain in fixed prostheses: a case report. Quintessence Int 1994; 25:835-8. [PMID: 7568692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A technique used to repair the abutment tooth of a fixed partial metal-ceramic prosthesis is described. This prosthesis extended from the maxillary central incisor to the left canine. The whole porcelain facial aspect of the central incisor had been fractured. Following a reduction of the metallic structure, a single porcelain crown was bonded to that area. The repair was quick, less expensive and less difficult than removal of the prosthesis and fabrication of a replacement, and provided excellent esthetic and functional results.
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Affiliation(s)
- A C Cardoso
- Department of Stomatology, Federal University of Santa Catarina, Brazil
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22
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Cardoso AC, Arcari GM, Zendron MV, Magini RDS. The use of natural teeth to make removable partial prostheses and complete prostheses: case reports. Quintessence Int 1994; 25:239-43. [PMID: 8058896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Human natural teeth were used in manufacturing two complete prostheses and two partial removable dentures in three patients. All four prostheses continue to function satisfactorily. The practitioner, by utilizing the patient's natural teeth in preference to artificial teeth, achieves an excellent means of solving the patient's esthetic problems.
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Affiliation(s)
- A C Cardoso
- Federal University of Santa Catarina, Brazil
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Baratieri LN, Monteiro Júnior S, Cardoso AC, de Melo Filho JC. Coronal fracture with invasion of the biologic width: a case report. Quintessence Int 1993; 24:85-91. [PMID: 8511269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
To repair a coronal fracture with invasion of the biologic width, flap surgery with osteotomy and osteoplasty localized on the fractured tooth was performed, and the crown was reattached to the tooth remnant with a composite resin system. Results after 6 years revealed optimal periodontal health and reasonable esthetics.
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Affiliation(s)
- L N Baratieri
- Department of Operative Dentistry, Federal University of Santa Catarina, School of Dentistry, Brazil
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Cardoso AC, Asckar EM, Vieira LF, Bonachela WC, do Valle AL. [Stress transmission to supporting structures in distal extension removable partial dentures (R.P.D.)]. Rev Odontol Univ Sao Paulo 1988; 2:161-6. [PMID: 3078857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Cardoso AC. [Oral rehabilitation of perimolysis. Treatment with bonded prosthesis]. RGO 1987; 35:380-2. [PMID: 3331821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Bulbol WS, Carneiro M, Cardoso AC, Alecrim WD, de Albuquerque BC, Alecrim M das G, Dourado HV. [Acute kidney failure in Plasmodium falciparum malaria]. Rev Inst Med Trop Sao Paulo 1982; 24:58-61. [PMID: 6764291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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Gonçalves ES, Cardoso AC. [Posterior vertical lumbotomy applied to renal biopsy]. AMB Rev Assoc Med Bras 1979; 25:297-8. [PMID: 317365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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