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Ferraz AP, Seara FAC, Baptista EF, Barenco TS, Sottani TBB, Souza NSC, Domingos AE, Barbosa RAQ, Takiya CM, Couto MT, Resende GO, Campos de Carvalho AC, Ponte CG, Nascimento JHM. BK Ca Channel Activation Attenuates the Pathophysiological Progression of Monocrotaline-Induced Pulmonary Arterial Hypertension in Wistar Rats. Cardiovasc Drugs Ther 2021; 35:719-732. [PMID: 33245463 DOI: 10.1007/s10557-020-07115-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/16/2020] [Indexed: 02/08/2023]
Abstract
PURPOSE In the present study, the therapeutic efficacy of a selective BKCa channel opener (compound X) in the treatment of monocrotaline (MCT)-induced pulmonary arterial hypertension (PAH) was investigated. METHODS PAH was induced in male Wistar rats by a single injection of MCT. After two weeks, the MCT-treated group was divided into two groups that were either treated with compound X or vehicle. Compound X was administered daily at 28 mg/kg. Electrocardiographic, echocardiographic, and haemodynamic analyses were performed; ex vivo evaluations of pulmonary artery reactivity, right ventricle (RV) and lung histology as well as expression levels of α and β myosin heavy chain, brain natriuretic peptide, and cytokines (TNFα and IL10) in heart tissue were performed. RESULTS Pulmonary artery rings of the PAH group showed a lower vasodilatation response to acetylcholine, suggesting endothelial dysfunction. Compound X promoted strong vasodilation in pulmonary artery rings of both control and MCT-induced PAH rats. The untreated hypertensive rats presented remodelling of pulmonary arterioles associated with increased resistance to pulmonary flow; increased systolic pressure, hypertrophy and fibrosis of the RV; prolongation of the QT and Tpeak-Tend intervals (evaluated during electrocardiogram); increased lung and liver weights; and autonomic imbalance with predominance of sympathetic activity. On the other hand, treatment with compound X reduced pulmonary vascular remodelling, pulmonary flow resistance and RV hypertrophy and afterload. CONCLUSION The use of a selective and potent opener to activate the BKCa channels promoted improvement of haemodynamic parameters and consequent prevention of RV maladaptive remodelling in rats with MCT-induced PAH.
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Affiliation(s)
- Ana Paula Ferraz
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Fernando A C Seara
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Department of Physiological Sciences, Federal Rural University of Rio de Janeiro, Seropedica, RJ, Brazil
| | - Emanuelle F Baptista
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Thais S Barenco
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Thais B B Sottani
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Natalia S C Souza
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ainá E Domingos
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Raiana A Q Barbosa
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Christina M Takiya
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Marcos T Couto
- Campus Rio de Janeiro, Federal Institute of Education, Science and Technology of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Gabriel O Resende
- Campus Rio de Janeiro, Federal Institute of Education, Science and Technology of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | - Cristiano G Ponte
- Campus Rio de Janeiro, Federal Institute of Education, Science and Technology of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Jose Hamilton M Nascimento
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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Monnerat G, Sánchez CAR, Santos CGM, Paulucio D, Velasque R, Evaristo GPC, Evaristo JAM, Nogueira FCS, Domont GB, Serrato M, Lima AS, Bishop D, Campos de Carvalho AC, Pompeu FAMS. Different Signatures of High Cardiorespiratory Capacity Revealed With Metabolomic Profiling in Elite Athletes. Int J Sports Physiol Perform 2020; 15:1156-1167. [PMID: 32335533 DOI: 10.1123/ijspp.2019-0267] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 10/11/2019] [Accepted: 12/03/2019] [Indexed: 02/08/2023]
Abstract
PURPOSE High cardiorespiratory capacity is a key determinant of human performance and life expectancy; however, the underlying mechanisms are not fully understood. The objective of this pilot study was to investigate biochemical signatures of endurance-performance athletes using high-resolution nontargeted metabolomics. METHODS Elite long-distance runners with similar training and anthropometrical records were studied. After athletes' maximal oxygen consumption (V˙O2max) was measured, they were divided into 2 groups: low V˙O2max (<65 mL·kg-1·min-1, n = 7) and high V˙O2max (>75 mL·kg-1·min-1, n = 7). Plasma was collected under basal conditions after 12 hours of fasting and after a maximal exercise test (nonfasted) and analyzed by high-resolution LC-MS. Multivariate and univariate statistics were applied. RESULTS A total of 167 compounds were putatively identified with an LC-MS-based metabolomics pipeline. Partial least-squares discriminant analysis showed a clear separation between groups. Significant variations in metabolites highlighted group differences in diverse metabolic pathways, including lipids, vitamins, amino acids, purine, histidine, xenobiotics, and others, either under basal condition or after the maximal exercise test. CONCLUSIONS Taken together, the metabolic alterations revealed in the study affect cellular energy use and availability, oxidative stress management, muscle damage, central nervous system signaling metabolites, nutrients, and compound bioavailability, providing new insights into metabolic alterations associated with exercise and cardiorespiratory fitness levels in trained athletes.
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Mesquita FCP, Arantes PC, Kasai-Brunswick TH, Araujo DS, Gubert F, Monnerat G, Silva Dos Santos D, Neiman G, Leitão IC, Barbosa RAQ, Coutinho JL, Vaz IM, Dos Santos MN, Borgonovo T, Cruz FES, Miriuka S, Medei EH, Campos de Carvalho AC, Carvalho AB. R534C mutation in hERG causes a trafficking defect in iPSC-derived cardiomyocytes from patients with type 2 long QT syndrome. Sci Rep 2019; 9:19203. [PMID: 31844156 PMCID: PMC6915575 DOI: 10.1038/s41598-019-55837-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 12/03/2019] [Indexed: 02/06/2023] Open
Abstract
Patient-specific cardiomyocytes obtained from induced pluripotent stem cells (CM-iPSC) offer unprecedented mechanistic insights in the study of inherited cardiac diseases. The objective of this work was to study a type 2 long QT syndrome (LQTS2)-associated mutation (c.1600C > T in KCNH2, p.R534C in hERG) in CM-iPSC. Peripheral blood mononuclear cells were isolated from two patients with the R534C mutation and iPSCs were generated. In addition, the same mutation was inserted in a control iPSC line by genome editing using CRISPR/Cas9. Cells expressed pluripotency markers and showed spontaneous differentiation into the three embryonic germ layers. Electrophysiology demonstrated that action potential duration (APD) of LQTS2 CM-iPSC was significantly longer than that of the control line, as well as the triangulation of the action potentials (AP), implying a longer duration of phase 3. Treatment with the IKr inhibitor E4031 only caused APD prolongation in the control line. Patch clamp showed a reduction of IKr on LQTS2 CM-iPSC compared to control, but channel activation was not significantly affected. Immunofluorescence for hERG demonstrated perinuclear staining in LQTS2 CM-iPSC. In conclusion, CM-iPSC recapitulated the LQTS2 phenotype and our findings suggest that the R534C mutation in KCNH2 leads to a channel trafficking defect to the plasma membrane.
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Affiliation(s)
- Fernanda C P Mesquita
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Paulo C Arantes
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Tais H Kasai-Brunswick
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil
- National Center for Structural Biology and Bioimaging, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco M, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Dayana S Araujo
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Fernanda Gubert
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco F, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Gustavo Monnerat
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Danúbia Silva Dos Santos
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Gabriel Neiman
- FLENI Foundation, Sede Escobar. Ruta 9, Km 53, Belen de Escobar, BA, B1625, Argentina
| | - Isabela C Leitão
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Raiana A Q Barbosa
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Jorge L Coutinho
- National Institute of Cardiology, Rua das Laranjeiras 374, Rio de Janeiro, RJ, 22240-006, Brazil
| | - Isadora M Vaz
- Pontifical Catholic University of Parana. Rua Imaculada Conceição 1155, Curitiba, PR, 80215-901, Brazil
| | - Marcus N Dos Santos
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Tamara Borgonovo
- Pontifical Catholic University of Parana. Rua Imaculada Conceição 1155, Curitiba, PR, 80215-901, Brazil
| | - Fernando E S Cruz
- National Institute of Cardiology, Rua das Laranjeiras 374, Rio de Janeiro, RJ, 22240-006, Brazil
| | - Santiago Miriuka
- FLENI Foundation, Sede Escobar. Ruta 9, Km 53, Belen de Escobar, BA, B1625, Argentina
| | - Emiliano H Medei
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil
- National Center for Structural Biology and Bioimaging, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco M, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Antonio C Campos de Carvalho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil.
- National Center for Structural Biology and Bioimaging, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco M, Rio de Janeiro, RJ, 21941-902, Brazil.
- National Institute of Cardiology, Rua das Laranjeiras 374, Rio de Janeiro, RJ, 22240-006, Brazil.
- National Institute for Science and Technology in Regenerative Medicine. Avenida Carlos Chagas Filho 373, Bloco M, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Adriana B Carvalho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco G, Rio de Janeiro, RJ, 21941-902, Brazil.
- National Center for Structural Biology and Bioimaging, Federal University of Rio de Janeiro. Avenida Carlos Chagas Filho 373, Bloco M, Rio de Janeiro, RJ, 21941-902, Brazil.
- National Institute for Science and Technology in Regenerative Medicine. Avenida Carlos Chagas Filho 373, Bloco M, Rio de Janeiro, RJ, 21941-902, Brazil.
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Seara FAC, Arantes PC, Domingos AE, Barbosa RAQ, Olivares EL, Sudo RT, Campos de Carvalho AC, Nascimento JHM. Cardiac electrical and contractile disorders promoted by anabolic steroid overdose are associated with late autonomic imbalance and impaired Ca 2+ handling. Steroids 2019; 148:1-10. [PMID: 31028764 DOI: 10.1016/j.steroids.2019.04.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 04/02/2019] [Accepted: 04/08/2019] [Indexed: 02/05/2023]
Abstract
AIM Investigate cardiac electrical and mechanical dysfunctions elicited by chronic anabolic steroid (AS) overdose. METHODS Male Wistar rats were treated with nandrolone decanoate (DECA) or vehicle (CTL) for 8 weeks. Electrocardiography and heart rate variability were assessed at weeks 2, 4, and 8. Cardiac reactivity to isoproterenol was investigated in isolated rat hearts. Action potential duration (APD) was measured from left ventricular (LV) muscle strips. L-type Ca2+ current (ICaL), and transient outward potassium current (Ito) were recorded by whole-cell patch-clamp in LV cardiomyocytes. Sarcoplasmic reticulum (SR) Ca2+ mobilization and Ca2+-induced contractile response sensitivity were evaluated in skinned cardiac fibers. Muscarinic type 2 receptor (M2R), β1-adrenergic receptor (β1AR), sarcoplasmic Ca2+ ATPase (SERCA-2a), type 2 ryanodine receptor (RyR2), L-type Ca2+ channel (CACNA1), Kv4.2 (KCND2), and Kv4.3 (KCND3) mRNA expression levels were measured by quantitative RT-PCR. RESULTS Compared with CTL group, DECA group exhibited decreased high frequency band power density (HF) and increased low frequency power density (LF), Cardiac M2R mRNA level was decreased. QTc interval at 2nd, 4th, and 8th week as well as APD30 and APD90 were increased by DECA. Ito density was decreased, while ICaL density was increased by DECA. SR Ca2+ loading and release were decreased by DECA, while contractile sensitivity to Ca2+ was increased versus CTL group. CONCLUSION DECA overdose induced cardiac rhythmic and mechanical abnormalities that can be associated with autonomic imbalance, up-regulated ICaL and down-regulated Ito, abnormal SR Ca2+ mobilization, and increased contractile sensitivity to Ca2+.
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Affiliation(s)
- Fernando A C Seara
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil.
| | - Paulo C Arantes
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Ainá E Domingos
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Raiana A Q Barbosa
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Emerson L Olivares
- Department of Physiological Sciences, Institute of Biology and Health Sciences, Federal Rural University of Rio de Janeiro, Seropedica 23890-000, RJ, Brazil
| | - Roberto T Sudo
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Antonio C Campos de Carvalho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Jose H M Nascimento
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
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Silva HB, Rodrigues DC, Andrade R, Teixeira GHGSF, Stelling MP, Ponte CG, Nascimento JHM, Campos de Carvalho AC, Medei E. Expression of potassium channels is relevant for cell survival and migration in a murine bone marrow stromal cell line. J Cell Physiol 2019; 234:18086-18097. [PMID: 30887515 DOI: 10.1002/jcp.28441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 02/07/2019] [Accepted: 02/14/2019] [Indexed: 02/05/2023]
Abstract
S17 is a clonogenic bone marrow stromal (BMS) cell line derived from mouse that has been extensively used to assess both human and murine hematopoiesis support capacity. However, very little is known about the expression of potassium ion channels and their function in cell survival and migration in these cells. Thus, the present study was designed to characterize potassium ion channels using electrophysiological and molecular biological approaches in S17 BMS cells. The whole-cell configuration of the patch clamp technique has been applied to identify potassium ion currents and reverse transcription polymerase chain reaction (RT-PCR) used to determine their molecular identities. Based on gating kinetics and pharmacological modulation of the macroscopic currents we found the presence of four functional potassium ion channels in S17 BMS cells. These include a current rapidly activated and inactivated, tetraethylammonium-sensitive, (IKV ) in most (50%) cells; a fast activated and rapidly inactivating A-type K + current (IK A -like); a delayed rectifier K + current (IK DR ) and an inward rectifier potassium current (IK IR ), found in, respectively 4.5%, 26% and 24% of these cells. RT-PCR confirmed the presence of mRNA transcripts for the alpha subunit of the corresponding functional ion channels. Additionally, functional assays were performed to investigate the importance of potassium currents in cell survival and migration. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide analyses revealed a reduction in cell viability, while wound healing assays revealed reduced migration potential in cells incubated with different potassium channel blockers. In conclusion, our data suggested that potassium currents might play a role in the maintenance of overall S17 cell ionic homeostasis directly affecting cell survival and migration.
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Affiliation(s)
- Henrique B Silva
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Center for Neuroscience and Cell Biology, University of Coimbra Rua Larga, Faculty of Medicine, Coimbra, Portugal
| | - Deivid C Rodrigues
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Raiana Andrade
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Gabriel H G S F Teixeira
- Federal Institute of Education, Science and Technology of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Mariana P Stelling
- Federal Institute of Education, Science and Technology of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Cristiano G Ponte
- Federal Institute of Education, Science and Technology of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - José H M Nascimento
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | - Emiliano Medei
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Seara FAC, Barbosa RAQ, Santos MVN, Domingos AE, Monnerat G, Carvalho AB, Olivares EL, Mill JG, Nascimento JHM, Campos de Carvalho AC. Paradoxical effect of testosterone supplementation therapy on cardiac ischemia/reperfusion injury in aged rats. J Steroid Biochem Mol Biol 2019; 191:105335. [PMID: 30930218 DOI: 10.1016/j.jsbmb.2019.03.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 03/18/2019] [Accepted: 03/19/2019] [Indexed: 02/08/2023]
Abstract
Aging is followed by numerous physiological limitations that reduce health span, particularly cardiovascular and metabolic disorders. Testosterone supplementation therapy (TST) has been widely used in the treatment of aging dysfunctions in either adult or aged patients, although recent evidence have suggested that the incidence of myocardial infarction might be increased in elderly patients. So far, though, the effects of TST in the progression of cardiac ischemia/reperfusion (IR) injury in aged hearts remain unclear. Male aged (23-24 months old) and adult (6 months old) Wistar rats were treated with placebo (Old + Placebo n = 5 / Adult + Placebo n = 5) or TST (Old + TST n = 7 / Adult + TST n = 5) for 30 days. After euthanasia, artificially-perfused isolated rat hearts were submitted to IR. Cardiac expression levels of genes encoding α and β myosin heavy chain (MHC), ryanodine receptor (RyR), brain-natriuretic peptide (BNP), sarcoplasmic reticulum Ca2+ ATPase 2a (SERCA2a), glucose-regulated protein 78 kDa (GRP78), eukaryotic initiation factor 2α (eIF2α), C/EBP-homologous protein (CHOP), caspase 3 and B cell lymphoma 2 (Bcl-2) were accessed by qRT-PCR. Protein levels of CHOP, p-Akt, and p-glycogen synthase kinase 3β (p-GSK-3β) were measured by Western Blot. Compared to placebo-treated aged rats, Old + TST group exhibited increased heart weight and up-regulation of αMHC mRNA expression levels, whereas βMHC mRNA expression (p < 0.05). During reperfusion, left ventricular developed pressure, dP/dt+, dP/dt-, and cardiac contractile function index were increased in Old + TST rat hearts (p < 0.05), whereas infarct size was increased (p < 0.05) in comparison with Old + Placebo group. p-Akt levels of Old + TST rat hearts were decreased when compared to Old + Placebo group. Conversely, TST did not promote significant effects in adult rat hearts. Taken together, these findings suggest that myocardial stunning and infarct size of aged hearts were distinctly affected by TST.
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Affiliation(s)
- Fernando A C Seara
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Department of Physiological Sciences, Federal Rural University of Rio de Janeiro, Seropedica, RJ, Brazil.
| | - Raiana A Q Barbosa
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Marcus V N Santos
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ainá E Domingos
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Gustavo Monnerat
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Adriana B Carvalho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Emerson L Olivares
- Department of Physiological Sciences, Federal Rural University of Rio de Janeiro, Seropedica, RJ, Brazil
| | - José G Mill
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Jose H M Nascimento
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Antonio C Campos de Carvalho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil; National Center for Structural Biology and Bioimaging, Federal University of Rio de Janeiro, RJ, Brazil
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Carvalho EB, Ramos IPR, Nascimento AFS, Brasil GV, Mello DB, Oti M, Sammeth M, Bahia MT, Campos de Carvalho AC, Carvalho AB. Echocardiographic Measurements in a Preclinical Model of Chronic Chagasic Cardiomyopathy in Dogs: Validation and Reproducibility. Front Cell Infect Microbiol 2019; 9:332. [PMID: 31616643 PMCID: PMC6768978 DOI: 10.3389/fcimb.2019.00332] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 09/10/2019] [Indexed: 02/05/2023] Open
Abstract
Background: The failure to translate preclinical results to the clinical setting is the rule, not the exception. One reason that is frequently overlooked is whether the animal model reproduces distinctive features of human disease. Another is the reproducibility of the method used to measure treatment effects in preclinical studies. Left ventricular (LV) function improvement is the most common endpoint in preclinical cardiovascular disease studies, while echocardiography is the most frequently used method to evaluate LV function. In this work, we conducted a robust echocardiographic evaluation of LV size and function in dogs chronically infected by Trypanosoma cruzi. Methods and Results: Echocardiography was performed blindly by two distinct observers in mongrel dogs before and between 6 and 9 months post infection. Parameters analyzed included end-systolic volume (ESV), end-diastolic volume (EDV), ejection fraction (EF), and fractional shortening (FS). We observed a significant LVEF and FS reduction in infected animals compared to controls, with no significant variation in volumes. However, the effect of chronic infection in systolic function was quite variable, with EF ranging from 17 to 66%. Using the cut-off value of EF ≤ 40%, established for dilated cardiomyopathy (DCM) in dogs, only 28% of the infected dogs were affected by the chronic infection. Conclusions: The canine model of CCC mimics human disease, reproducing the percentage of individuals that develop heart failure during the chronic infection. It is thus mandatory to establish inclusion criteria in the experimental design of canine preclinical studies to account for the variable effect that chronic infection has on systolic function.
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Affiliation(s)
- Eduardo B. Carvalho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Isalira P. R. Ramos
- National Center for Structural Biology and Bioimaging, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Guilherme V. Brasil
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Debora B. Mello
- National Center for Structural Biology and Bioimaging, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Martin Oti
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Michael Sammeth
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maria T. Bahia
- School of Medicine, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Antonio C. Campos de Carvalho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- National Center for Structural Biology and Bioimaging, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- National Institute for Science and Technology in Regenerative Medicine, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Adriana B. Carvalho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- National Center for Structural Biology and Bioimaging, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- National Institute for Science and Technology in Regenerative Medicine, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- *Correspondence: Adriana B. Carvalho
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Monnerat G, Brunswick T, Asensi K, Santos D, Andrade R, Mesquita F, Albuquerque JP, Ferreira R, Simões J, Muniz M, Wendit C, Velasquez E, Dumont G, Nogueira F, Campos de Carvalho AC. Abstract 503: Modeling Premature Cardiac Aging by Induced Pluripotent Stem Cell From a Patient With Hutchinson-Gilford Progeria Syndrome. Circ Res 2018. [DOI: 10.1161/res.123.suppl_1.503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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] [Indexed: 11/16/2022]
Abstract
Background:
Hutchinson-Gilford Progeria Syndrome (HGPS) is an extremely rare genetic disorder characterized by accelerated aging and high incidence of cardiovascular complications and metabolic alterations. However, the underlying mechanisms of this syndrome are not fully understood.
Methods and Results:
This study modelled HGPS using cardiomyocytes generated from induced pluripotent stem cells (iPSc) derived from a patient affected by the syndrome, characterizing the molecular and biophysical alterations found in cardiomyocytes obtained from three distinct differentiation protocols run in parallel with a control iPSc. Electrophysiology recordings were performed with intracellular microelectrodes and the Progeria cardiomyocytes fired action potentials similar to those from control iPSc-derived cardiomyocytes. High resolution respirometry performed on Oroboros system in isolated cardiomyocytes showed that Progeria cardiomyocytes have a tendency to decrease the oxygen consumption under basal condition and after FCCP, when compared to control cardiomyocytes (P=0.06). Furthermore, HGPS cardiomyocytes produced less ROS under basal and after 100uM Hydrogen peroxide treatment. However, mitotracker analysis shows no difference on mitochondrial content. Electron tomography and 3D reconstruction analysis suggest structural abnormalities in the mitochondria of Progeria cardiomyocytes. Proteomics analysis, performed with Liquid Chromatography tandem mass spectrometry (LC-MS/MS) in a high-resolution system (Q-Exactive Plus, Thermo Fischer), shows differential protein expression between Progeria (183 unique proteins) and Control (225 unique proteins) IPSc - derived cardiomyocytes.
Conclusions:
Our work demonstrate that iPSc- derived cardiomyocytes from Progeria patients have significant alterations in cellular respiration and protein expression.
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Affiliation(s)
| | | | | | | | | | | | | | | | - João Simões
- Federal Univ Rio De Janeiro, Rio De Janeiro, Brazil
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9
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Jiménez MAV, Nascimento JHM, Monnerat G, Maciel L, Paiva CN, Pedrosa RC, Campos de Carvalho AC, Medei E. Autoantibodies with beta-adrenergic activity from chronic chagasic patients induce cardiac arrhythmias and early afterdepolarization in a drug-induced LQT2 rabbit hearts. Int J Cardiol 2017; 240:354-359. [PMID: 28320606 DOI: 10.1016/j.ijcard.2017.02.066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 02/07/2017] [Accepted: 02/13/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND Cardiac arrhythmias are one of the main causes of death in ChCP and other dilated cardiomyopathies. Previous studies demonstrated that ventricular arrhythmias are associated with the presence of autoantibodies with beta-adrenergic activity, Ab-β. OBJECTIVES The aim of this study was to investigate whether Ab-β, present in chronic chagasic patients (ChCP), induce cardiac arrhythmias in the pharmacological type-2 long QT syndrome model (LQTS-2). METHODS/RESULTS The LQTS2 was established by perfusion of Tyrode saline solution with a potassium channel blocker E-4031 (5μM) in isolated rabbit hearts or in rabbit cardiac strips, in order to record ECG or action potential, respectively. Autoantibodies from ChCP activating (Ab-β) or not (Ab-NR) cardiac beta 1-adrenergic receptors were used. Ab-β, but not Ab-NR, were able to significantly shorten QT, QTc and increase Tpeak-Tend interval in the LQTS-2. A positive correlation between higher QTc and Tpeak-Tend was found after Ab-β perfusion in the same model. In addition, in the LQTS-2 model, in almost 75% (11/15) of the hearts perfused with Ab-β, ventricular and atrio-ventricular electrical disturbances were observed. Atenolol abolished all Ab-β-induced arrhythmias. Ab-β, when perfused in a cellular LQTS-2, drastically reduced the action potential duration and evoked early afterdepolarization (EAD's), while Ab-NR did not modulate the AP properties in the LQTS-2. CONCLUSION The results indicate that Ab-β were able to induce cardiac arrhythmias and EAD's. This phenomenon can explain, at least in part, the cellular mechanism of Ab-β-induced arrhythmias. Furthermore, atenolol is effective for the treatment of Ab-β-induced arrhythmias.
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Affiliation(s)
| | - José H M Nascimento
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gustavo Monnerat
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Leonardo Maciel
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Claudia N Paiva
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Roberto Coury Pedrosa
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Emiliano Medei
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
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10
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Nosanchuk JD, Nosanchuk MD, Rodrigues ML, Nimrichter L, de Carvalho ACC, Weiss LM, Spray DC, Tanowitz HB. The Einstein-Brazil Fogarty: A decade of synergy. Braz J Microbiol 2015; 46:945-55. [PMID: 26691452 PMCID: PMC4704644 DOI: 10.1590/s1517-838246420140975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 03/05/2015] [Indexed: 02/08/2023] Open
Abstract
A rich, collaborative program funded by the US NIH Fogarty program in 2004 has provided for a decade of remarkable opportunities for scientific advancement through the training of Brazilian undergraduate, graduate and postdoctoral students from the Federal University and Oswaldo Cruz Foundation systems at Albert Einstein College of Medicine. The focus of the program has been on the development of trainees in the broad field of Infectious Diseases, with a particular focus on diseases of importance to the Brazilian population. Talented trainees from various regions in Brazil came to Einstein to learn techniques and study fungal, parasitic and bacterial pathogens. In total, 43 trainees enthusiastically participated in the program. In addition to laboratory work, these students took a variety of courses at Einstein, presented their results at local, national and international meetings, and productively published their findings. This program has led to a remarkable synergy of scientific discovery for the participants during a time of rapid acceleration of the scientific growth in Brazil. This collaboration between Brazilian and US scientists has benefitted both countries and serves as a model for future training programs between these countries.
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Affiliation(s)
- Joshua D. Nosanchuk
- Departments of Medicine, Microbiology & Immunology, Albert
Einstein College of Medicine, Bronx, NY, EUA
- Send correspondence to J.D. Nosanchuk. Departments of Medicine,
Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, NY, EUA.
E-mail:
| | - Murphy D. Nosanchuk
- Departments of Medicine, Microbiology & Immunology, Albert
Einstein College of Medicine, Bronx, NY, EUA
- Instituto de Microbiologia Professor Paulo de Góes, Universidade
Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Marcio L. Rodrigues
- Instituto de Microbiologia Professor Paulo de Góes, Universidade
Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo
Cruz, Rio de Janeiro, RJ, Brazil
| | - Leonardo Nimrichter
- Instituto de Microbiologia Professor Paulo de Góes, Universidade
Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | - Louis M. Weiss
- Departments of Pathology and Medicine, Albert Einstein College of
Medicine, Bronx, NY, EUA
| | - David C. Spray
- Departments of Neuroscience and Medicine, Albert Einstein College of
Medicine, Bronx, NY, EUA
| | - Herbert B. Tanowitz
- Departments of Pathology and Medicine, Albert Einstein College of
Medicine, Bronx, NY, EUA
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11
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Mello DB, Ramos IP, Mesquita FCP, Brasil GV, Rocha NN, Takiya CM, Lima APCA, Campos de Carvalho AC, Goldenberg RS, Carvalho AB. Adipose Tissue-Derived Mesenchymal Stromal Cells Protect Mice Infected with Trypanosoma cruzi from Cardiac Damage through Modulation of Anti-parasite Immunity. PLoS Negl Trop Dis 2015; 9:e0003945. [PMID: 26248209 PMCID: PMC4527728 DOI: 10.1371/journal.pntd.0003945] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 07/01/2015] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Chagas disease, caused by the protozoan Trypanosoma cruzi (T. cruzi), is a complex disease endemic in Central and South America. It has been gathering interest due to increases in non-vectorial forms of transmission, especially in developed countries. The objective of this work was to investigate if adipose tissue-derived mesenchymal stromal cells (ASC) can alter the course of the disease and attenuate pathology in a mouse model of chagasic cardiomyopathy. METHODOLOGY/PRINCIPAL FINDINGS ASC were injected intraperitoneally at 3 days post-infection (dpi). Tracking by bioluminescence showed that cells remained in the abdominal cavity for up to 9 days after injection and most of them migrated to the abdominal or subcutaneous fat, an early parasite reservoir. ASC injection resulted in a significant reduction in blood parasitemia, which was followed by a decrease in cardiac tissue inflammation, parasitism and fibrosis at 30 dpi. At the same time point, analyses of cytokine release in cells isolated from the heart and exposed to T. cruzi antigens indicated an anti-inflammatory response in ASC-treated animals. In parallel, splenocytes exposed to the same antigens produced a pro-inflammatory response, which is important for the control of parasite replication, in placebo and ASC-treated groups. However, splenocytes from the ASC group released higher levels of IL-10. At 60 dpi, magnetic resonance imaging revealed that right ventricular (RV) dilation was prevented in ASC-treated mice. CONCLUSIONS/SIGNIFICANCE In conclusion, the injection of ASC early after T. cruzi infection prevents RV remodeling through the modulation of immune responses. Lymphoid organ response to the parasite promoted the control of parasite burden, while the heart, a target organ of Chagas disease, was protected from damage due to an improved control of inflammation in ASC-treated mice.
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Affiliation(s)
- Debora B. Mello
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Isalira P. Ramos
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
- Departamento de Radiologia, Hospital Universitário Clementino Fraga Filho, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernanda C. P. Mesquita
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Guilherme V. Brasil
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Nazareth N. Rocha
- Universidade Federal Fluminense, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Christina M. Takiya
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Paula C. A. Lima
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Antonio C. Campos de Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Cardiologia, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Regina S. Goldenberg
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Adriana B. Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail:
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12
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Jasmin, Jelicks LA, Tanowitz HB, Peters VM, Mendez-Otero R, de Carvalho ACC, Spray DC. Molecular imaging, biodistribution and efficacy of mesenchymal bone marrow cell therapy in a mouse model of Chagas disease. Microbes Infect 2014; 16:923-935. [PMID: 25218054 PMCID: PMC4360918 DOI: 10.1016/j.micinf.2014.08.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 07/17/2014] [Accepted: 08/26/2014] [Indexed: 02/08/2023]
Abstract
Chagasic cardiomyopathy, resulting from infection with the parasite Trypanosoma cruzi, was discovered more than a century ago and remains an incurable disease. Due to the unique properties of mesenchymal stem cells (MSC) we hypothesized that these cells could have therapeutic potential for chagasic cardiomyopathy. Recently, our group pioneered use of nanoparticle-labeled MSC to correlate migration with its effect in an acute Chagas disease model. We expanded our investigation into a chronic model and performed more comprehensive assays. Infected mice were treated with nanoparticle-labeled MSC and their migration was correlated with alterations in heart morphology, metalloproteinase activity, and expression of several proteins. The vast majority of labeled MSC migrated to liver, lungs and spleen whereas a small number of cells migrated to chagasic hearts. Magnetic resonance imaging demonstrated that MSC therapy reduced heart dilatation. Additionally metalloproteinase activity was higher in heart and other organs of infected mice. Protein expression analyses revealed that connexin 43, laminin γ1, IL-10 and INF-γ were affected by the disease and recovered after cell therapy. Interestingly, MSC therapy led to upregulation of SDF-1 and c-kit in the hearts. The beneficial effect of MSC therapy in Chagas disease is likely due to an indirect action of the cells of the heart, rather than the incorporation of large numbers of stem cells into working myocardium.
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Affiliation(s)
- Jasmin
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, RJ, Brazil
- Dept. of Neuroscience, Albert Einstein College of Medicine, NY, USA
| | - Linda A Jelicks
- Dept. of Physiology and Biophysics, Albert Einstein College of Medicine, NY, USA
| | - Herbert B Tanowitz
- Dept. of Pathology, Albert Einstein College of Medicine, NY, USA
- Dept. of Medicine, Albert Einstein College of Medicine, NY, USA
| | - Vera Maria Peters
- Centro de Biologia da Reprodução, Universidade Federal de Juiz de Fora, MG, Brazil
| | - Rosalia Mendez-Otero
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, RJ, Brazil
| | - Antonio C Campos de Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, RJ, Brazil
- Dept. of Neuroscience, Albert Einstein College of Medicine, NY, USA
| | - David C Spray
- Dept. of Neuroscience, Albert Einstein College of Medicine, NY, USA
- Dept. of Pathology, Albert Einstein College of Medicine, NY, USA
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13
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Passipieri JA, Kasai-Brunswick TH, Suhett G, Martins AB, Brasil GV, Campos DB, Rocha NN, Ramos IP, Mello DB, Rodrigues DC, Christie BB, Silva-Mendes BJ, Balduíno A, Sá RM, Lopes LM, Goldenberg RC, Campos de Carvalho AC, Carvalho AB. Improvement of cardiac function by placenta-derived mesenchymal stem cells does not require permanent engraftment and is independent of the insulin signaling pathway. Stem Cell Res Ther 2014; 5:102. [PMID: 25145631 PMCID: PMC4354978 DOI: 10.1186/scrt490] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/18/2014] [Accepted: 08/08/2014] [Indexed: 02/08/2023] Open
Abstract
INTRODUCTION The objective of this work was to evaluate the efficacy of placenta-derived mesenchymal stem cell (MSC) therapy in a mouse model of myocardial infarction (MI). Since MSCs can be obtained from two different regions of the human term placenta (chorionic plate or villi), cells obtained from both these regions were compared so that the best candidate for cell therapy could be selected. METHODS For the in vitro studies, chorionic plate MSCs (cp-MSCs) and chorionic villi MSCs (cv-MSCs) were extensively characterized for their genetic stability, clonogenic and differentiation potential, gene expression, and immunophenotype. For the in vivo studies, C57Bl/6 mice were submitted to MI and, after 21 days, received weekly intramyocardial injections of cp-MSCs for 3 weeks. Cells were also stably transduced with a viral construct expressing luciferase, under the control of the murine stem cell virus (MSCV) promoter, and were used in a bioluminescence assay. The expression of genes associated with the insulin signaling pathway was analyzed in the cardiac tissue from cp-MSCs and placebo groups. RESULTS Morphology, differentiation, immunophenotype, and proliferation were quite similar between these cells. However, cp-MSCs had a greater clonogenic potential and higher expression of genes related to cell cycle progression and genome stability. Therefore, we considered that the chorionic plate was preferable to the chorionic villi for the isolation of MSCs. Sixty days after MI, cell-treated mice had a significant increase in ejection fraction and a reduction in end-systolic volume. This improvement was not caused by a reduction in infarct size. In addition, tracking of cp-MSCs transduced with luciferase revealed that cells remained in the heart for 4 days after the first injection but that the survival period was reduced after the second and third injections. Quantitative reverse transcription-polymerase chain reaction revealed similar expression of genes involved in the insulin signaling pathway when comparing cell-treated and placebo groups. CONCLUSIONS Improvement of cardiac function by cp-MSCs did not require permanent engraftment and was not mediated by the insulin signaling pathway.
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Affiliation(s)
- Juliana A Passipieri
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
- Instituto Nacional de Cardiologia, Rua das Laranjeiras 374, Rio de Janeiro, 22240-006, Brazil.
| | - Tais H Kasai-Brunswick
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
- Instituto Nacional de Cardiologia, Rua das Laranjeiras 374, Rio de Janeiro, 22240-006, Brazil.
| | - Grazielle Suhett
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
- Departamento de Radiologia, Hospital Universitário Clementino Fraga Filho, Rua Rodolpho Paulo Rocco 255, Rio de Janeiro, 21941-913, Brazil.
| | - Andreza B Martins
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
- Instituto Nacional de Cardiologia, Rua das Laranjeiras 374, Rio de Janeiro, 22240-006, Brazil.
| | - Guilherme V Brasil
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Dilza B Campos
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Nazareth N Rocha
- Universidade Federal Fluminense, Rua Professor Hernani Melo 101, Niterói, 24210-130, Brazil.
| | - Isalira P Ramos
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
- Departamento de Radiologia, Hospital Universitário Clementino Fraga Filho, Rua Rodolpho Paulo Rocco 255, Rio de Janeiro, 21941-913, Brazil.
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Av Carlos Chagas Filho 373, Rio de Janeiro, 21941-902, Brazil.
| | - Debora B Mello
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Deivid C Rodrigues
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Beatriz B Christie
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Bernardo J Silva-Mendes
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Alex Balduíno
- Centro de Pesquisa, Tecnologia e Inovação, Universidade Veiga de Almeida, Rua Ibituruna 108, Rio de Janeiro, 20271-020, Brazil.
| | - Renato M Sá
- Centro Pré-Natal de Diagnóstico e Tratamento, Clínica Perinatal, Rua das Laranjeiras 445, Rio de Janeiro, 22240-002, Brazil.
| | - Laudelino M Lopes
- Centro Pré-Natal de Diagnóstico e Tratamento, Clínica Perinatal, Rua das Laranjeiras 445, Rio de Janeiro, 22240-002, Brazil.
- Department of Obstetrics and Gynecology, Western University, London Health Sciences Centre-Victoria Hospital, B2-401, London, ON, N6H 5W9, Canada.
| | - Regina C Goldenberg
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Av Carlos Chagas Filho 373, Rio de Janeiro, 21941-902, Brazil.
| | - Antonio C Campos de Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
- Instituto Nacional de Cardiologia, Rua das Laranjeiras 374, Rio de Janeiro, 22240-006, Brazil.
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Av Carlos Chagas Filho 373, Rio de Janeiro, 21941-902, Brazil.
| | - Adriana B Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro, RJ, 21941-902, Brazil.
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Av Carlos Chagas Filho 373, Rio de Janeiro, 21941-902, Brazil.
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Asensi KD, Fortunato RS, dos Santos DS, Pacheco TS, de Rezende DF, Rodrigues DC, Mesquita FCP, Kasai-Brunswick TH, de Carvalho ACC, Carvalho DP, Carvalho AB, Goldenberg RCDS. Reprogramming to a pluripotent state modifies mesenchymal stem cell resistance to oxidative stress. J Cell Mol Med 2014; 18:824-31. [PMID: 24528612 PMCID: PMC4119388 DOI: 10.1111/jcmm.12226] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Accepted: 12/06/2013] [Indexed: 02/05/2023] Open
Abstract
Properties of induced pluripotent stem cells (iPSC) have been extensively studied since their first derivation in 2006. However, the modification in reactive oxygen species (ROS) production and detoxification caused by reprogramming still needs to be further elucidated. The objective of this study was to compare the response of iPSC generated from menstrual blood-derived mesenchymal stem cells (mb-iPSC), embryonic stem cells (H9) and adult menstrual blood-derived mesenchymal stem cells (mbMSC) to ROS exposure and investigate the effects of reprogramming on cellular oxidative stress (OS). mbMSC were extremely resistant to ROS exposure, however, mb-iPSC were 10-fold less resistant to H(2)O(2), which was very similar to embryonic stem cell sensitivity. Extracellular production of ROS was also similar in mb-iPSC and H9 and almost threefold lower than in mbMSC. Furthermore, intracellular amounts of ROS were higher in mb-iPSC and H9 when compared with mbMSC. As the ability to metabolize ROS is related to antioxidant enzymes, we analysed enzyme activities in these cell types. Catalase and superoxide dismutase activities were reduced in mb-iPSC and H9 when compared with mbMSC. Finally, cell adhesion under OS conditions was impaired in mb-iPSC when compared with mbMSC, albeit similar to H9. Thus, reprogramming leads to profound modifications in extracellular ROS production accompanied by loss of the ability to handle OS.
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Affiliation(s)
- Karina D Asensi
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Rodrigo S Fortunato
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Danúbia S dos Santos
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Thaísa S Pacheco
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Danielle F de Rezende
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Deivid C Rodrigues
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Fernanda C P Mesquita
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Tais H Kasai-Brunswick
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Antonio C Campos de Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
- Instituto Nacional de CardiologiaRio de Janeiro, Brazil
| | - Denise P Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Adriana B Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Regina C dos S Goldenberg
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
- *Correspondence to: Regina C. dos S. GOLDENBERG, Av Carlos Chagas Filho 373, Sala G2-053, Rio de Janeiro 21941-902, Brazil. Tel.: +55 21 2562-6559 Fax: +55 21 2280-8193 E-mail:
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Monnerat-Cahli G, Trentin-Sonoda M, Guerra B, Manso G, Ferreira ACF, Silva DLSG, Coutinho DC, Carneiro-Ramos MS, Rodrigues DC, Cabral-da-Silva MC, Goldenberg RCS, Nascimento JHM, Campos de Carvalho AC, Medei E. Bone marrow mesenchymal stromal cells rescue cardiac function in streptozotocin-induced diabetic rats. Int J Cardiol 2014; 171:199-208. [PMID: 24374203 DOI: 10.1016/j.ijcard.2013.12.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 11/05/2013] [Accepted: 12/10/2013] [Indexed: 02/06/2023]
Abstract
OBJECTIVES In the present study, we investigated whether MSC-transplantation can revert cardiac dysfunction in streptozotocin-induced diabetic rats and the immunoregulatory effects of MSC were examined. BACKGROUND Cardiac complications are one of the main causes of death in diabetes. Several studies have shown anti-diabetic effects of bone marrow mesenchymal stromal cells (MSC). METHODS/RESULTS The rats were divided in three groups: Non-diabetic, Diabetic and Diabetic-Treated with 5 × 10(6) MSC 4 weeks after establishment of diabetes. Four weeks after MSC-therapy, systemic metabolic parameters, immunological profile and cardiac function were assessed. MSC-transplantation was able to revert the hyperglycemia and body weight loss of the animals. In addition, after MSC-transplantation a decrease in corticosterone and IFN-γ sera levels without restoration of insulin and leptin plasma levels was observed. Also, MSC-therapy improved electrical remodeling, shortening QT and QTc in the ECG and action potential duration of left ventricular myocytes. No arrhythmic events were observed after MSC-transplantation. MSC-therapy rescued the cardiac beta-adrenergic sensitivity by increasing beta-1 adrenergic receptor expression. Both alpha and beta cardiac AMPK and p-AMPK returned to baseline values after MSC-therapy. However, total ERK1 and p-ERK1/2 were not different among groups. CONCLUSION The results indicate that MSC-therapy was able to rescue cardiac impairment induced by diabetes, normalize cardiac AMPK subunit expression and activity, decrease corticosterone and glycemia and exert systemic immunoregulation.
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Affiliation(s)
- Gustavo Monnerat-Cahli
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Mayra Trentin-Sonoda
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo Andre, Brasil
| | - Bárbara Guerra
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Gabriel Manso
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Andrea C F Ferreira
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Diorney L S G Silva
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Danielle C Coutinho
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brasil
| | - Marcela S Carneiro-Ramos
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brasil
| | - Deivid C Rodrigues
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Mauricio C Cabral-da-Silva
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Regina C S Goldenberg
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - José H M Nascimento
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Antonio C Campos de Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil; Instituto Nacional de Cardiologia, Rio de Janeiro, Brasil
| | - Emiliano Medei
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil.
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16
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Ribeiro Dos Santos R, Rassi S, Feitosa G, Grecco OT, Rassi A, da Cunha AB, de Carvalho VB, Guarita-Souza LC, de Oliveira W, Tura BR, Soares MBP, Campos de Carvalho AC. Cell therapy in Chagas cardiomyopathy (Chagas arm of the multicenter randomized trial of cell therapy in cardiopathies study): a multicenter randomized trial. Circulation 2012; 125:2454-61. [PMID: 22523306 DOI: 10.1161/circulationaha.111.067785] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Previous studies suggested that transplantation of autologous bone marrow-derived mononuclear cells (BMNCs) improves heart function in chronic chagasic cardiomyopathy. We report the results of the first randomized trial of BMNC therapy in chronic chagasic cardiomyopathy. METHODS AND RESULTS Patients 18 to 75 years of age with chronic chagasic cardiomyopathy, New York Heart Association class II to IV heart failure, left ventricular ejection fraction (LVEF) <35, and optimized therapy were randomized to intracoronary injection of autologous BMNCs or placebo. The primary end point was the difference in LVEF from baseline to 6 and 12 months after treatment between groups. Analysis was by intention to treat and powered to detect an absolute between-group difference of 5. Between July 2005 and October 2009, 234 patients were enrolled. Two patients abandoned the study and 49 were excluded because of protocol violation. The remaining 183 patients, 93 in the placebo group and 90 in the BMNC group, had a trimmed mean age of 52.4 years (range, 50.8-54.0 years) and LVEF of 26.1 (range, 25.1-27.1) at baseline. Median number of injected BMNCs was 2.20×10(8) (range, 1.40-3.50×10(8)). Change in LVEF did not differ significantly between treatment groups: trimmed mean change in LVEF at 6 months, 3.0 (1.3-4.8) for BMNCs and 2.5 (0.6-4.5) for placebo (P=0.519); change in LVEF at 12 months, 3.5 (1.5-5.5) for BMNCs and 3.7 (1.5-6.0) for placebo (P=0.850). Left ventricular systolic and diastolic volumes, New York Heart Association functional class, Minnesota quality-of-life questionnaire, brain natriuretic peptide concentrations, and 6-minute walking test did also not differ between groups. CONCLUSION Intracoronary injection of autologous BMNCs does not improve left ventricular function or quality of life in patients with chronic chagasic cardiomyopathy.
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17
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Lachtermacher S, Esporcatte BLB, Fortes FDSDA, Rocha NN, Montalvão F, Costa PC, Belem L, Rabischoffisky A, Faria Neto HCC, Vasconcellos R, Iacobas DA, Iacobas S, Spray DC, Thomas NM, Goldenberg RCS, de Carvalho ACC. Functional and transcriptomic recovery of infarcted mouse myocardium treated with bone marrow mononuclear cells. Stem Cell Rev Rep 2012; 8:251-61. [PMID: 21671060 PMCID: PMC3212608 DOI: 10.1007/s12015-011-9282-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Although bone marrow-derived mononuclear cells (BMNC) have been extensively used in cell therapy for cardiac diseases, little mechanistic information is available to support reports of their efficacy. To address this shortcoming, we compared structural and functional recovery and associated global gene expression profiles in post-ischaemic myocardium treated with BMNC transplantation. BMNC suspensions were injected into cardiac scar tissue 10 days after experimental myocardial infarction. Six weeks later, mice undergoing BMNC therapy were found to have normalized antibody repertoire and improved cardiac performance measured by ECG, treadmill exercise time and echocardiography. After functional testing, gene expression profiles in cardiac tissue were evaluated using high-density oligonucleotide arrays. Expression of more than 18% of the 11981 quantified unigenes was significantly altered in the infarcted hearts. BMNC therapy restored expression of 2099 (96.2%) of the genes that were altered by infarction but led to altered expression of 286 other genes, considered to be a side effect of the treatment. Transcriptional therapeutic efficacy, a metric calculated using a formula that incorporates both recovery and side effect of treatment, was 73%. In conclusion, our results confirm a beneficial role for bone marrow-derived cell therapy and provide new information on molecular mechanisms operating after BMNC transplantation on post ischemic heart failure in mice.
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Affiliation(s)
- Stephan Lachtermacher
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Bloco G, Ilha do Fundão 21949-900, Rio de Janeiro, RJ, Brazil
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18
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Machado FS, Jelicks LA, Kirchhoff LV, Shirani J, Nagajyothi F, Mukherjee S, Nelson R, Coyle CM, Spray DC, Campos de Carvalho AC, Guan F, Prado CM, Lisanti MP, Weiss LM, Montgomery SP, Tanowitz HB. Chagas heart disease: report on recent developments. Cardiol Rev 2012; 20:53-65. [PMID: 22293860 PMCID: PMC3275684 DOI: 10.1097/crd.0b013e31823efde2] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Chagas disease, caused by the parasite Trypanosoma cruzi, is an important cause of cardiac disease in endemic areas of Latin America. It is now being diagnosed in nonendemic areas because of immigration. Typical cardiac manifestations of Chagas disease include dilated cardiomyopathy, congestive heart failure, arrhythmias, cardioembolism, and stroke. Clinical and laboratory-based research to define the pathology resulting from T. cruzi infection has shed light on many of the cellular and molecular mechanisms leading to these manifestations. Antiparasitic treatment may not be appropriate for patients with advanced cardiac disease. Clinical management of Chagas heart disease is similar to that used for cardiomyopathies caused by other processes. Cardiac transplantation has been successfully performed in a small number of patients with Chagas heart disease.
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Affiliation(s)
- Fabiana S. Machado
- Departments of Biochemistry and Immunology, Institute of Biological Sciences, and Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Linda A. Jelicks
- Gruss Magnetic Resonance Research Center and Department of Physiology and Biophysics, Albert Einstein College of Medicine, Bronx, NY
| | - Louis V. Kirchhoff
- Departments of Internal Medicine and Epidemiology, University of Iowa, Iowa City, IA
- Department of Veterans Affairs Medical Center, Iowa City, IA
| | - Jamshid Shirani
- Department of Cardiology St Luke’s Hospital and Health Network, Bethlehem, PA
| | - Fnu Nagajyothi
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY
| | - Shankar Mukherjee
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY
| | - Randin Nelson
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY
| | - Christina M. Coyle
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY
- Department of Parasitology, Jacobi Medical Center, Bronx, NY
| | - David C. Spray
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY
| | - Antonio C. Campos de Carvalho
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY
- National Cardiology Institute, Rio de Janeiro, Brazil
- Institute of Biophysics, Federal University of Rio de Janeiro, Brazil
| | - Fangxia Guan
- Bioengineering Department of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Cibele M. Prado
- Department of Pathology, University of São Paulo, Ribeirão Preto, Brazil
| | - Michael P. Lisanti
- Kimmel Cancer Center, Departments of Cancer Biology and Stem Cell Biology and Regenerative Medicine, Thomas Jefferson University, Philadelphia, PA
| | - Louis M. Weiss
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY
- Department of Parasitology, Jacobi Medical Center, Bronx, NY
- Global Health Center, Albert Einstein College of Medicine, Bronx, NY
| | - Susan P. Montgomery
- Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, GA
| | - Herbert B. Tanowitz
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY
- Department of Parasitology, Jacobi Medical Center, Bronx, NY
- Global Health Center, Albert Einstein College of Medicine, Bronx, NY
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Jasmin, Jelicks LA, Koba W, Tanowitz HB, Mendez-Otero R, Campos de Carvalho AC, Spray DC. Mesenchymal bone marrow cell therapy in a mouse model of chagas disease. Where do the cells go? PLoS Negl Trop Dis 2012; 6:e1971. [PMID: 23272265 PMCID: PMC3521704 DOI: 10.1371/journal.pntd.0001971] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [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: 07/04/2012] [Accepted: 11/02/2012] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Chagas disease, resulting from infection with the parasite Trypanosoma cruzi (T. cruzi), is a major cause of cardiomyopathy in Latin America. Drug therapy for acute and chronic disease is limited. Stem cell therapy with bone marrow mesenchymal cells (MSCs) has emerged as a novel therapeutic option for cell death-related heart diseases, but efficacy of MSC has not been tested in Chagas disease. METHODS AND RESULTS We now report the use of cell-tracking strategies with nanoparticle labeled MSC to investigate migration of transplanted MSC in a murine model of Chagas disease, and correlate MSC biodistribution with glucose metabolism and morphology of heart in chagasic mice by small animal positron emission tomography (microPET). Mice were infected intraperitoneally with trypomastigotes of the Brazil strain of T. cruzi and treated by tail vein injection with MSC one month after infection. MSCs were labeled with near infrared fluorescent nanoparticles and tracked by an in vivo imaging system (IVIS). Our IVIS results two days after transplant revealed that a small, but significant, number of cells migrated to chagasic hearts when compared with control animals, whereas the vast majority of labeled MSC migrated to liver, lungs and spleen. Additionally, the microPET technique demonstrated that therapy with MSC reduced right ventricular dilation, a phenotype of the chagasic mouse model. CONCLUSIONS We conclude that the beneficial effects of MSC therapy in chagasic mice arise from an indirect action of the cells in the heart rather than a direct action due to incorporation of large numbers of transplanted MSC into working myocardium.
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Affiliation(s)
- Jasmin
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - Linda A. Jelicks
- Department of Physiology and Biophysics, Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - Wade Koba
- Department of Radiology (Nuclear Medicine), Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - Herbert B. Tanowitz
- Department of Pathology, Albert Einstein College of Medicine, Bronx, New York, United States of America
- Department of Medicine, Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - Rosalia Mendez-Otero
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Antonio C. Campos de Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - David C. Spray
- Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, United States of America
- Department of Medicine, Albert Einstein College of Medicine, Bronx, New York, United States of America
- * E-mail:
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20
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Campos de Carvalho AC, Bagno L, Werneck de Castro JP, Oliveira P, Abreu M, Rocha N, Kasai Brunswick T, Miranda V, Goldenberg R. Abstract P021: Adipose-Derived Stromal Cell Therapy Stabilizes Cardiac Function and Improves Border Zone Remodeling After Coronary Occlusion in Rats. Circ Res 2011. [DOI: 10.1161/res.109.suppl_1.ap021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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] [Indexed: 11/16/2022]
Abstract
Recent studies have identified adipose tissue as a new source of mesenchymal stem cells for therapy. The purpose of this study was to investigate the therapy with rat adipose derived stromal cells (ASC) in a rat model of healed myocardial infarction (MI). ASC from inguinal subcutaneous adipose tissue of male Wistar rats were isolated by enzymatic digestion and filtration. Cells were then cultured until passage 3. Four weeks after ligation of the left coronary artery of female rats, a suspension of either 100µl with PBS + Matrigel + 2 x 106 ASC labeled with Hoechst (n=11) or 100µ;l of PBS + Matrigel (n=10) was injected along the borders of the ventricular wall scar tissue. A sham operated group (n=5) was submitted to the same surgical procedure except permanent ligation of left coronary artery. Cardiac performance was assessed by electro and echocardiogram. Echo was performed prior to injections (baseline-BL) and six weeks after injections (follow-up - FU), and values after treatment were normalized by values obtained before treatment. Hemodynamic measurements were performed 6 weeks after injections. All data are expressed as mean ± SEM. Student's paired or unpaired T test was used to compare the same group in two different times or two distinct groups, while two way ANOVA was used to compare more than two groups along different times and p was set at <0.05. All infarcted animals exhibited cardiac function impairment. Ejection fraction (EF), shortening fractional area (SFA) and left ventricular akynesia (LVA) were similar between infarcted groups before treatment. Six weeks after therapy, ASC group showed significant improvement in all three Echo indexes in comparison to vehicle group. In non-anesthetized animals dp/dt+ was also significantly higher in ASC when compared to vehicle. In agreement with functional improvement scar area was diminished in the ASC group. We conclude that ASC stabilize cardiac function in infarcted rats when administered directly to the myocardium.
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Affiliation(s)
| | - Luiza Bagno
- Federal Univ of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Marcia Abreu
- Federal Univ of Rio de Janeiro, Rio de Janeiro, Brazil
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21
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Soares MBP, Lima RS, Souza BSF, Vasconcelos JF, Rocha LL, Dos Santos RR, Iacobas S, Goldenberg RC, Lisanti MP, Iacobas DA, Tanowitz HB, Spray DC, Campos de Carvalho AC. Reversion of gene expression alterations in hearts of mice with chronic chagasic cardiomyopathy after transplantation of bone marrow cells. Cell Cycle 2011; 10:1448-55. [PMID: 21467843 PMCID: PMC3117044 DOI: 10.4161/cc.10.9.15487] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Chronic chagasic cardiomyopathy is a leading cause of heart failure in Latin American countries, being associated with intense inflammatory response and fibrosis. We have previously shown that bone marrow mononuclear cell (BMC) transplantation improves inflammation, fibrosis, and ventricular diameter in hearts of mice with chronic Chagas disease. Here we investigated the transcriptomic recovery induced by BMC therapy by comparing the heart transcriptomes of control, chagasic, and BMC transplanted mice. Out of the 9390 unique genes quantified in all samples, 1702 had their expression altered in chronic chagasic hearts compared to those of normal mice. Major categories of significantly upregulated genes were related to inflammation, fibrosis and immune responses, while genes involved in mitochondrion function were downregulated. When BMC-treated chagasic hearts were compared to infected mice, 96% of the alterations detected in infected hearts were restored to normal levels, although an additional 109 genes were altered by treatment. Transcriptomic recovery, a new measure that considers both resotrative and side effects of treatment, was remarkably high (84%). Immunofluorescence and morphometric analyses confirmed the effects of BMC therapy in the pattern of inflammatory-immune response and expression of adhesion molecules. In conclusion, by using large-scale gene profiling for unbiased assessment of therapeutic efficacy we demonstrate immunomodulatory effects of BMC therapy in chronic chagasic cardiomyopathy and identify potentially relevant factors involved in the pathogenesis of the disease that may provide new therapeutic targets.
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22
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Jasmin, Torres ALM, Nunes HMP, Passipieri JA, Jelicks LA, Gasparetto EL, Spray DC, Campos de Carvalho AC, Mendez-Otero R. Optimized labeling of bone marrow mesenchymal cells with superparamagnetic iron oxide nanoparticles and in vivo visualization by magnetic resonance imaging. J Nanobiotechnology 2011; 9:4. [PMID: 21542946 PMCID: PMC3047423 DOI: 10.1186/1477-3155-9-4] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [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: 10/11/2010] [Accepted: 02/09/2011] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Stem cell therapy has emerged as a promising addition to traditional treatments for a number of diseases. However, harnessing the therapeutic potential of stem cells requires an understanding of their fate in vivo. Non-invasive cell tracking can provide knowledge about mechanisms responsible for functional improvement of host tissue. Superparamagnetic iron oxide nanoparticles (SPIONs) have been used to label and visualize various cell types with magnetic resonance imaging (MRI). In this study we performed experiments designed to investigate the biological properties, including proliferation, viability and differentiation capacity of mesenchymal cells (MSCs) labeled with clinically approved SPIONs. RESULTS Rat and mouse MSCs were isolated, cultured, and incubated with dextran-covered SPIONs (ferumoxide) alone or with poly-L-lysine (PLL) or protamine chlorhydrate for 4 or 24 hrs. Labeling efficiency was evaluated by dextran immunocytochemistry and MRI. Cell proliferation and viability were evaluated in vitro with Ki67 immunocytochemistry and live/dead assays. Ferumoxide-labeled MSCs could be induced to differentiate to adipocytes, osteocytes and chondrocytes. We analyzed ferumoxide retention in MSCs with or without mitomycin C pretreatment. Approximately 95% MSCs were labeled when incubated with ferumoxide for 4 or 24 hrs in the presence of PLL or protamine, whereas labeling of MSCs incubated with ferumoxide alone was poor. Proliferative capacity was maintained in MSCs incubated with ferumoxide and PLL for 4 hrs, however, after 24 hrs it was reduced. MSCs incubated with ferumoxide and protamine were efficiently visualized by MRI; they maintained proliferation and viability for up to 7 days and remained competent to differentiate. After 21 days MSCs pretreated with mitomycin C still showed a large number of ferumoxide-labeled cells. CONCLUSIONS The efficient and long lasting uptake and retention of SPIONs by MSCs using a protocol employing ferumoxide and protamine may be applicable to patients, since both ferumoxides and protamine are approved for human use.
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Affiliation(s)
- Jasmin
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Dept. of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Ana Luiza M Torres
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Henrique MP Nunes
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Juliana A Passipieri
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Linda A Jelicks
- Dept. of Physiology and Biophysics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Emerson L Gasparetto
- Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - David C Spray
- Dept. of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Antonio C Campos de Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Dept. of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Rosalia Mendez-Otero
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Abstract
Chagas disease was first described one century ago, yet the mechanisms underlying chagasic cardiomyopathy remain elusive. Disease progression often leads to heart failure and patients with this infectious cardiomyopathy have a poor prognosis. Treatment options for heart failure due to Chagas disease are not different from standard therapy. Over the past decade, cell-based therapies have emerged as a new alternative in the treatment of this disease, not only because of the possibility of replacing lost vessels and cardiomyocytes but also because these cells could potentially influence the microenvironmental changes that perpetuate the disease. In this chapter, we will review current knowledge on cell-based therapies for the treatment of Chagas disease.
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Affiliation(s)
- Antonio C Campos de Carvalho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro and National Cardiology Institute, Rio de Janeiro, RJ, Brazil
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24
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Jasmin ., Torres ALM, Nunes HMP, Passipieri JA, Jelicks LA, Gasparetto EL, Spray DC, Campos de Carvalho AC, Mendez-Otero R. Correction: Optimized labeling of bone marrow mesenchymal cells with superparamagnetic iron oxide nanoparticles and in vivo visualization by magnetic resonance imaging. J Nanobiotechnology 2011. [PMCID: PMC3080797 DOI: 10.1186/1477-3155-9-12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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25
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Silva HB, Medei E, Rodrigues DC, Rondinelli E, Almeida NAS, Goldenberg RCS, de Carvalho ACC, Nascimento JHM. Voltage-dependent calcium and chloride currents in S17 bone marrow stromal cell line. J Cell Physiol 2010; 223:244-51. [PMID: 20049895 DOI: 10.1002/jcp.22030] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The bone marrow stromal cell line S17 has been used to study hematopoiesis in vitro. In this study, we demonstrate the presence of calcium and chloride currents in cultured S17 cells. Calcium currents were of low amplitude or barely detectable (50-100 pA). Hence to amplify the currents, we have used barium as a charge carrier. Barium currents were identified based on their distinct voltage-dependence, and sensitivity to dihydropyridines. S17 cells also exhibited a slowly activating outward current without inactivation, most commonly seen when the sodium of the extracellular solution was replaced either by TEA (TEA/Cs saline) or NMDG (NMDG saline), or by addition of amiloride to the extracellular solution. This current was abolished either by 500 microM SITS (4,4'-diisothiocyanatostilbene-2-2'-disulfonic acid) or 500 microM DPC (diphenylamine-2-carboxylic acid) a cystic fibrosis transmembrane conductance regulator (CFTR) chloride channel blocker, identifying it as a Cl(-) current. RT-PCR identified the presence of ENaC and CFTR transcripts. CFTR blockade reduced cell proliferation, suggesting that this channel plays a physiological role in regulation of S17 cell proliferation.
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MESH Headings
- 3-Pyridinecarboxylic acid, 1,4-dihydro-2,6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, Methyl ester/pharmacology
- 4,4'-Diisothiocyanostilbene-2,2'-Disulfonic Acid/pharmacology
- Amiloride/pharmacology
- Animals
- Barium/metabolism
- Bone Marrow Cells/drug effects
- Bone Marrow Cells/metabolism
- Calcium/metabolism
- Calcium Channel Agonists/pharmacology
- Calcium Channel Blockers/pharmacology
- Calcium Channels, L-Type/drug effects
- Calcium Channels, L-Type/genetics
- Calcium Channels, L-Type/metabolism
- Cell Line
- Cell Proliferation
- Chlorides/metabolism
- Cystic Fibrosis Transmembrane Conductance Regulator/drug effects
- Cystic Fibrosis Transmembrane Conductance Regulator/genetics
- Cystic Fibrosis Transmembrane Conductance Regulator/metabolism
- Epithelial Sodium Channels/metabolism
- Kinetics
- Membrane Potentials
- Mice
- Nifedipine/pharmacology
- Patch-Clamp Techniques
- RNA, Messenger/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Sodium/metabolism
- Sodium Channel Blockers/pharmacology
- Stromal Cells/drug effects
- Stromal Cells/metabolism
- ortho-Aminobenzoates/pharmacology
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Affiliation(s)
- Henrique B Silva
- UFRJ, IBCCF, Laboratório de Eletrofisiologia Cardíaca Antonio Paes de Carvalho, Rio de Janeiro, RJ, Brazil
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Nihei OK, Fonseca PC, Rubim NM, Bonavita AG, Lyra JSPO, Neves-dos-Santos S, de Carvalho ACC, Spray DC, Savino W, Alves LA. Modulatory effects of cAMP and PKC activation on gap junctional intercellular communication among thymic epithelial cells. BMC Cell Biol 2010; 11:3. [PMID: 20078861 PMCID: PMC2823718 DOI: 10.1186/1471-2121-11-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [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: 08/24/2009] [Accepted: 01/15/2010] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND We investigated the effects of the signaling molecules, cyclic AMP (cAMP) and protein-kinase C (PKC), on gap junctional intercellular communication (GJIC) between thymic epithelial cells (TEC). RESULTS Treatment with 8-Br-cAMP, a cAMP analog; or forskolin, which stimulates cAMP production, resulted in an increase in dye transfer between adjacent TEC, inducing a three-fold enhancement in the mean fluorescence of coupled cells, ascertained by flow cytometry after calcein transfer. These treatments also increased Cx43 mRNA expression, and stimulated Cx43 protein accumulation in regions of intercellular contacts. VIP, adenosine, and epinephrine which may also signal through cyclic nucleotides were tested. The first two molecules did not mimic the effects of 8-Br-cAMP, however epinephrine was able to increase GJIC suggesting that this molecule functions as an endogenous inter-TEC GJIC modulators. Stimulation of PKC by phorbol-myristate-acetate inhibited inter-TEC GJIC. Importantly, both the enhancing and the decreasing effects, respectively induced by cAMP and PKC, were observed in both mouse and human TEC preparations. Lastly, experiments using mouse thymocyte/TEC heterocellular co-cultures suggested that the presence of thymocytes does not affect the degree of inter-TEC GJIC. CONCLUSIONS Overall, our data indicate that cAMP and PKC intracellular pathways are involved in the homeostatic control of the gap junction-mediated communication in the thymic epithelium, exerting respectively a positive and negative role upon cell coupling. This control is phylogenetically conserved in the thymus, since it was seen in both mouse and human TEC preparations. Lastly, our work provides new clues for a better understanding of how the thymic epithelial network can work as a physiological syncytium.
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Affiliation(s)
- Oscar K Nihei
- Laboratory of Cellular Communication, Oswaldo Cruz Institute, The Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- Laboratory of Thymus Research, Oswaldo Cruz Institute, The Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Paula C Fonseca
- Laboratory of Cellular Communication, Oswaldo Cruz Institute, The Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Nara M Rubim
- Laboratory of Cellular Communication, Oswaldo Cruz Institute, The Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Andre G Bonavita
- Laboratory of Cellular Communication, Oswaldo Cruz Institute, The Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Jurandy SPO Lyra
- Laboratory of Thymus Research, Oswaldo Cruz Institute, The Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- Department of Pathology, Federal University of Rio de Janeiro State (UNIRIO), Rio de Janeiro, Brazil
| | - Sandra Neves-dos-Santos
- Laboratory of Thymus Research, Oswaldo Cruz Institute, The Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- Department of Clinical Analysis, Faculty of Pharmacy, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | | | - David C Spray
- The Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, New York, USA
| | - Wilson Savino
- Laboratory of Thymus Research, Oswaldo Cruz Institute, The Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Luiz A Alves
- Laboratory of Cellular Communication, Oswaldo Cruz Institute, The Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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Tanowitz HB, Machado FS, Jelicks LA, Shirani J, de Carvalho ACC, Spray DC, Factor SM, Kirchhoff LV, Weiss LM. Perspectives on Trypanosoma cruzi-induced heart disease (Chagas disease). Prog Cardiovasc Dis 2009; 51:524-39. [PMID: 19410685 PMCID: PMC2677559 DOI: 10.1016/j.pcad.2009.02.001] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Chagas disease is caused by the parasite Trypanosoma cruzi. It is a common cause of heart disease in endemic areas of Latin America. The year 2009 marks the 100th anniversary of the discovery of T cruzi infection and Chagas disease by the Brazilian physician Carlos Chagas. Chagasic cardiomyopathy develops in from 10% to 30% of persons who are chronically infected with this parasite. Echocardiography and magnetic resonance imaging (MRI) are important modalities in the evaluation and prognostication of individuals with chagasic heart disease. The etiology of chagasic heart disease likely is multifactorial. Parasite persistence, autoimmunity, and microvascular abnormalities have been studied extensively as possible pathogenic mechanisms. Experimental studies suggest that alterations in cardiac gap junctions may be etiologic in the pathogenesis of conduction abnormalities. The diagnosis of chronic Chagas disease is made by serology. The treatment of this infection has shortcomings that need to be addressed. Cardiac transplantation and bone marrow stem cell therapy for persons with Chagas disease have received increasing research attention in recent years.
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Affiliation(s)
- Herbert B Tanowitz
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
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Medei EH, Nascimento JHM, Pedrosa RC, Barcellos L, Masuda MO, Sicouri S, Elizari MV, de Carvalho ACC. Antibodies with beta-adrenergic activity from chronic chagasic patients modulate the QT interval and M cell action potential duration. Europace 2008; 10:868-76. [PMID: 18515284 PMCID: PMC2666256 DOI: 10.1093/europace/eun138] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
AIMS The aim of this study was to investigate whether the sera from chronic chagasic patients (CChPs) with beta-1 adrenergic activity (Ab-beta) can modulate ventricular repolarization. Beta-adrenergic activity has been described in CChP. It increases the L-type calcium current and heart rate in isolated hearts, but its effects on ventricular repolarization has not been described. METHODS AND RESULTS In isolated rabbit hearts, under pacing condition, QT interval was measured under Ab-beta perfusion. Beta-adrenergic activity was also tested in guinea pig ventricular M cells. Furthermore, the immunoglobulin fraction (IgG-beta) of the Ab-beta was tested on Ito, ICa, and Iks currents in rat, rabbit, and guinea pig myocytes, respectively. Beta-adrenergic activity shortened the QT interval. This effect was abolished in the presence of propranolol. In addition, sera from CChP without beta-adrenergic activity (Ab-beta) did not modulate QT interval. The M cell action potential duration (APD) was reversibly shortened by Ab-beta. Atenolol inhibited this effect of Ab-beta, and Ab- did not modulate the AP of M cells. Ito was not modulated by isoproterenol nor by IgG-beta. However, IgG-beta increased ICa and IKs. CONCLUSION The shortening of the QT interval and APD in M cells and the increase of IKs and ICa induced by IgG-beta contribute to repolarization changes that may trigger malignant ventricular arrhythmias observed in patients with chronic chagasic or idiopathic cardiomyopathy.
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Affiliation(s)
- Emiliano Horacio Medei
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Bloco G-CCS, Cidade Universitária, Ilha do Fundão, Rio de Janeiro, RJ 21949-900, Brasil.
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Medei E, Pedrosa RC, Benchimol Barbosa PR, Costa PC, Hernández CC, Chaves EA, Linhares V, Masuda MO, Nascimento JH, Campos de Carvalho AC. Human antibodies with muscarinic activity modulate ventricular repolarization: basis for electrical disturbance. Int J Cardiol 2007; 115:373-80. [PMID: 16884792 DOI: 10.1016/j.ijcard.2006.03.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2005] [Revised: 03/12/2006] [Accepted: 03/24/2006] [Indexed: 02/08/2023]
Abstract
INTRODUCTION In chronic chagasic patients sudden death has been reported when QT interval dispersion is increased and antibodies with muscarinic-like activity have been demonstrated to trigger arrhythmias. The aims were to investigate, in vivo and in vitro, relation between these antibodies and heterogeneity of ventricular repolarization and to identify predictors of cardiac death in chronic chagasic patients. METHODS AND RESULTS Clinical, electrocardiograph and echocardiograph variables from 32 chronic chagasic patients with moderate to severe left ventricular dysfunction, followed-up for 10 years were analyzed. Sera from chronic chagasic patients with or without muscarinic activity were tested in isolated rabbit hearts to study ventricular repolarization. Stepwise multivariate logistic analysis was applied to identify independent predictors of cardiac death. QT interval dispersion of patients with muscarinic activity (75.9+/-5.5 ms) was larger than that of patients without muscarinic activity (51.3+/-4.0 ms, p<0.001). Maximum uncorrected and corrected QT intervals were not significantly different between groups of patients. Sera from patients with muscarinic activity significantly and reversibly increased QT interval in isolated rabbit hearts (p=0.002). This effect was abolished in the presence of the muscarinic antagonist atropine. Multivariate analysis identified maximum corrected QT intervals and left ventricular end diastolic index as independent predictors of cardiac death (p=0.03 and p=0.02, respectively). CONCLUSIONS Sera with muscarinic activity from chagasic patients have a strong contribution to evoke ventricular repolarization rhythm disorder. In these patients, ventricular repolarization heterogeneity is increased significantly. In vitro, muscarinic sera reversibly increased repolarization duration. Maximum corrected QT intervals and left ventricular end diastolic index are independent predictors of cardiac death.
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Affiliation(s)
- Emiliano Medei
- Laboratório de Eletrofisiologia Cardíaca Antônio Paes de Carvalho, Instituto de Biofísica Carlos Chagas Filho, Brazil
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Tura BR, Martino HF, Gowdak LH, dos Santos RR, Dohmann HF, Krieger JE, Feitosa G, Vilas-Boas F, Oliveira SA, Silva SA, Bozza AZ, Borojevic R, de Carvalho ACC. Multicenter randomized trial of cell therapy in cardiopathies - MiHeart Study. Trials 2007; 8:2. [PMID: 17233910 PMCID: PMC1783861 DOI: 10.1186/1745-6215-8-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2006] [Accepted: 01/18/2007] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Cardiovascular diseases are the major cause of death in the world. Current treatments have not been able to reverse this scenario, creating the need for the development of new therapies. Cell therapies have emerged as an alternative for cardiac diseases of distinct causes in experimental animal studies and more recently in clinical trials. METHOD/DESIGN We have designed clinical trials to test for the efficacy of autologous bone marrow derived mononuclear cell therapies in four different cardiopathies: acute and chronic ischemic heart disease, and Chagasic and dilated cardiomyopathy. All trials are multicenter, randomized, double-blind and placebo controlled. In each trial 300 patients will be enrolled and receive optimized therapy for their specific condition. Additionally, half of the patients will receive the autologous bone marrow cells while the other half will receive placebo (saline with 5% autologous serum). For each trial there are specific inclusion and exclusion criteria and the method for cell delivery is intramyocardial for the chronic ischemic heart disease and intracoronary for all others. Primary endpoint for all studies will be the difference in ejection fraction (determined by Simpson's rule) six and twelve months after intervention in relation to the basal ejection fraction. The main hypothesis of this study is that the patients who receive the autologous bone-marrow stem cell implant will have after a 6 month follow-up a mean increase of 5% in absolute left ventricular ejection fraction in comparison with the control group. DISCUSSION Many phase I clinical trials using cell therapy for cardiac diseases have already been performed. The few randomized studies have yielded conflicting results, rendering necessary larger well controlled trials to test for efficacy of cell therapies in cardiopathies. The trials registration numbers at the NIH registry are the following: Chagasic cardiomyopathy (NCT00349271), dilated cardiomyopathy (NCT00333827), acute myocardial infarction (NCT00350766) and Chronic Ischemic Heart Disease (NCT00362388).
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Affiliation(s)
- Bernardo R Tura
- Instituto Nacional de Cardiologia Laranjeiras, Rio de Janeiro, Brazil
| | - Helena F Martino
- Instituto Nacional de Cardiologia Laranjeiras, Rio de Janeiro, Brazil
| | - Luis H Gowdak
- Instituto do Coração da Universidade de São Paulo, São Paulo, Brazil
| | | | | | - José E Krieger
- Instituto do Coração da Universidade de São Paulo, São Paulo, Brazil
| | - Gilson Feitosa
- Hospital Santa Izabel-Santa Casa de Misericórida da Bahia, Salvador, Brazil
| | - Fábio Vilas-Boas
- Hospital Santa Izabel-Santa Casa de Misericórida da Bahia, Salvador, Brazil
| | - Sérgio A Oliveira
- Instituto do Coração da Universidade de São Paulo, São Paulo, Brazil
| | | | - Augusto Z Bozza
- Instituto Nacional de Cardiologia Laranjeiras, Rio de Janeiro, Brazil
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Pereira-Junior PP, Chaves EA, Costa-E-Sousa RH, Masuda MO, de Carvalho ACC, Nascimento JHM. Cardiac autonomic dysfunction in rats chronically treated with anabolic steroid. Eur J Appl Physiol 2006; 96:487-94. [PMID: 16344939 DOI: 10.1007/s00421-005-0111-7] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/17/2005] [Indexed: 02/08/2023]
Abstract
To date no published data exist regarding the effects of chronic high-dose anabolic-androgenic steroid administration on tonic cardiac autonomic control. The aim of this study was to evaluate, by power spectral analysis of heart rate variability (HRV), the effects of chronic treatment with supraphysiological doses of nandrolone decanoate (DECA) on tonic cardiac autonomic regulation in sedentary rats. Male Wistar rats were treated weekly with 10 mg kg(-1) of DECA (n=7) or vehicle (CONTROL, n=7) for 10 weeks. At the 8th week of treatment, electrocardiogram was recorded in the conscious state, for time- and frequency-domain HRV analysis. Parasympathetic indexes were reduced in DECA group: high-frequency power (CONTROL=11.1+/-3.0 ms2 vs. DECA=3.8+/-0.6 ms2, P<0.05), RMSSD (CONTROL=5.9+/-0.9 ms vs. DECA 3.5+/-0.3 ms; P<0.05) and pNN5 (CONTROL=31.5+/-7.5 ms vs. DECA=13.2+/-2.6 ms; P<0.05). The sympathetic index LF/HF tended to be higher in DECA group (CONTROL=0.65+/-0.15 vs. DECA=1.17+/-0.26, P=0.0546). In conclusion, chronic treatment with DECA, in rats, impairs tonic cardiac autonomic regulation, which may provide a key mechanism for anabolic steroid-induced arrhythmia and sudden cardiac death.
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Affiliation(s)
- Pedro P Pereira-Junior
- Laboratório de Eletrofisiologia Cardíaca Antonio Paes de Carvalho, Instituto de Biofisica Carlos Chagas Filho, UFRJ, CCS, Bloco G, Ilha do Fundao, 21949-900, Rio de Janeiro RJ, Brazil
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Medei E, Costa PC, Barbosa PB, Hernández CC, Chaves E, Linhares V, Masuda MO, Nascimento JH, Campos de Carvalho AC, Pedrosa RC. Human chagasic antibodies with muscarinic activity modulate ventricular repolarization: Basis for electrical disturbance. Heart Rhythm 2005. [DOI: 10.1016/j.hrthm.2005.02.967] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Linhares VL, Almeida NA, Menezes DC, Elliott DA, Lai D, Beyer EC, Campos de Carvalho AC, Costa MW. Transcriptional regulation of the murine Connexin40 promoter by cardiac factors Nkx2-5, GATA4 and Tbx5. Cardiovasc Res 2004; 64:402-11. [PMID: 15537493 PMCID: PMC3252638 DOI: 10.1016/j.cardiores.2004.09.021] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2004] [Accepted: 09/28/2004] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVE Connexin40 (Cx40) is a gap junction protein expressed specifically in developing and mature atrial myocytes and cells of the conduction system. In this report, we identify cis-acting elements within the mouse Cx40 promoter and unravel part of the complex pathways involved in the cardiac expression of this gene. METHODS To identify the factors involved in the cardiac expression of Cx40, we used transient transfections in mammalian cells coupled with electrophoretic mobility shift assays (EMSA) and RT-PCR. RESULTS Within the promoter region, we identified the minimal elements required for transcriptional activity within 150 base pairs (bp) upstream of the transcriptional start site. Several putative regulatory sites for transcription factors were predicted within this region by computer analysis, and we demonstrated that the nuclear factors Sp1, Nkx2-5, GATA4 and Tbx5 could interact specifically with elements present in the minimal promoter region of the Cx40. Furthermore, co-transfection experiments showed the ability of Nkx2-5 and GATA4 to transactivate the minimal Cx40 promoter while Tbx5 repressed Nkx2-5/GATA4-mediated activation. Mutagenesis of the Nkx2-5 core site in the Cx40 promoter led to significantly decreased activity in rat smooth muscle cell line A7r5. Consistent with this, mouse embryos lacking Nkx2-5 showed a marked decrease in Cx40 expression. CONCLUSION In this work, we cloned the promoter region of the Cx40 and demonstrated that the core promoter was modulated by cardiac transcriptional factors Nkx2-5, Tbx5 and GATA4 acting together with ubiquitous Sp1.
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Affiliation(s)
- Vania L.F. Linhares
- Laboratório de Cardiologia Celular e Molecular-Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 20941-900, Brazil
| | - Norma A.S. Almeida
- Laboratório de Cardiologia Celular e Molecular-Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 20941-900, Brazil
| | - Diego C. Menezes
- Laboratório de Cardiologia Celular e Molecular-Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 20941-900, Brazil
| | - David A. Elliott
- Developmental Biology Unit, Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
| | - Donna Lai
- Developmental Biology Unit, Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
| | - Eric C. Beyer
- Section of Pediatric Hematology/Oncology, Department of Pediatrics, University of Chicago, Chicago, IL 60637-1470, USA
| | - Antonio C. Campos de Carvalho
- Laboratório de Cardiologia Celular e Molecular-Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 20941-900, Brazil
| | - Mauro W. Costa
- Laboratório de Cardiologia Celular e Molecular-Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 20941-900, Brazil
- Developmental Biology Unit, Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
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Olivares EL, Ribeiro VP, Werneck de Castro JPS, Ribeiro KC, Mattos EC, Goldenberg RCS, Mill JG, Dohmann HF, dos Santos RR, de Carvalho ACC, Masuda MO. Bone marrow stromal cells improve cardiac performance in healed infarcted rat hearts. Am J Physiol Heart Circ Physiol 2004; 287:H464-70. [PMID: 15044198 DOI: 10.1152/ajpheart.01141.2003] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Postinfarct congestive heart failure is one of the leading causes of morbidity and mortality in developed and developing countries. The main purpose of this study was to investigate whether transplantation of bone marrow stromal cells (BMSC) directly into the myocardium could improve the performance of healed infarcted rat hearts. Cell culture medium with or without BMSC was injected into borders of cardiac scar tissue 4 wk after experimental infarction. Cardiac performance was evaluated 2 wk after cellular (n = 10) or medium (n = 10) injection by electro- and echocardiography. Histological study was performed 3 wk after treatment. Electrocardiography of BMSC-treated infarcted rats showed electrical and mechanical parameters more similar to those in control than in medium-treated animals: a normal frontal QRS axis in 6 of 10 BMSC-treated and all control rats and a rightward deviation of the QRS axis in all 10 medium-treated animals. BMSC treatment, assessed by echocardiography, improved fractional shortening (39.00 +/- 4.03%) compared with medium-treated hearts (18.20 +/- 0.74%) and prevented additional changes in cardiac geometry. Immunofluorescence microscopy revealed colocalization of 4',6-diamidino-2-phenylindole-labeled nuclei of transplanted cells with cytoskeletal markers for cardiomyocytes and smooth muscle cells, indicating regeneration of damaged myocardium and angiogenesis. These data provide strong evidence that BMSC implantation can improve cardiac performance in healed infarctions and open new promising therapeutic opportunities for patients with postinfarction heart failure.
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Affiliation(s)
- Emerson Lopes Olivares
- Instituto de Biofísica Carlos Chagas Filho, UFRJ CCS, Bloco G, Ilha do Fundão, 21949-900 Rio de Janeiro RJ, Brazil
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Hurtado SP, Balduino A, Bôdi ECA, El-Cheikh MC, Campos de Carvalho AC, Borojevic R. Connexin expression and gap-junction-mediated cell interactions in an in vitro model of haemopoietic stroma. Cell Tissue Res 2004; 316:65-76. [PMID: 14968357 DOI: 10.1007/s00441-003-0829-7] [Citation(s) in RCA: 10] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2003] [Accepted: 10/27/2003] [Indexed: 02/05/2023]
Abstract
In addition to the steady-state production of all blood cells, bone marrow can respond to an increased requirement for one or several cell lineages. The hormonal controls involved may act directly on blood cell progenitors or indirectly through modification of the haemopoietic environment. Intercellular gap junctions formed by connexins (Cx) provide direct communication among adjacent cells and the functional integration of multicellular systems. Since haemopoietic stroma is determinant for blood cell production, we have questioned whether gap-junction-dependent controls of haemopoiesis are sensitive to hormones and vitamins. We have analysed the expression, synthesis, cell distribution and formation of functional gap junctions in the murine bone-marrow stroma cell line S-17, and between stromal cells and blood cell progenitors. Nine Cxs were identified by reverse transcription/polymerase chain reaction, and only Cx43 by Western blot and immunofluorescence. All of the studied parameters were sensitive to intrinsic controls dependent upon the pattern of cell growth and modulated by exogenous controls mediated by retinol and steroids. Positive or negative modulation was specific for different Cxs. FACS analysis showed communication among the stromal cells and between stromal cells and myeloid (Mac1+) but not lymphoid (B220+) progenitors. Calcein transfer modulation did not correspond to the modulation of Cx43 expression and formation of connexons, suggesting the participation of other Cxs. Thus, functional gap junctions among haemopoietic stroma cells and between stroma and haematopoietic cells in the bone marrow may be modulated in response to hormonal stimuli, potentially controlling overall blood cell production.
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Affiliation(s)
- Sandra P Hurtado
- Departamento de Histologia e Embriologia, Instituto de Ciências Biomédicas, Cidade Universitária, 21941-970, Rio de Janeiro, Brasil
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Soares MBP, Lima RS, Rocha LL, Takyia CM, Pontes-de-Carvalho L, de Carvalho ACC, Ribeiro-dos-Santos R. Transplanted bone marrow cells repair heart tissue and reduce myocarditis in chronic chagasic mice. Am J Pathol 2004; 164:441-7. [PMID: 14742250 PMCID: PMC1602272 DOI: 10.1016/s0002-9440(10)63134-3] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A progressive destruction of the myocardium occurs in approximately 30% of Trypanosoma cruzi-infected individuals, causing chronic chagasic cardiomyopathy, a disease so far without effective treatment. Syngeneic bone marrow cell transplantation has been shown to cause repair and improvement of heart function in a number of studies in patients and animal models of ischemic cardiopathy. The effects of bone marrow transplant in a mouse model of chronic chagasic cardiomyopathy, in the presence of the disease causal agent, ie, the T. cruzi, are described herein. Bone marrow cells injected intravenously into chronic chagasic mice migrated to the heart and caused a significant reduction in the inflammatory infiltrates and in the interstitial fibrosis characteristics of chronic chagasic cardiomyopathy. The beneficial effects were observed up to 6 months after bone marrow cell transplantation. A massive apoptosis of myocardial inflammatory cells was observed after the therapy with bone marrow cells. Transplanted bone marrow cells obtained from chagasic mice and from normal mice had similar effects in terms of mediating chagasic heart repair. These results show that bone marrow cell transplantation is effective for treatment of chronic chagasic myocarditis and indicate that autologous bone marrow transplant may be used as an efficient therapy for patients with chronic chagasic cardiomyopathy.
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Affiliation(s)
- Milena B P Soares
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, BA, Brazil
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Olivares E, Pinho-Ribeiro V, Saar Werneck J, Santos Goldenberg R, Mattos E, Dohmann HF, Masuda MO, Campos de Carvalho AC. Cellular cardiomyoplasty with bone marrow cells improves cardiac performance in heart failure induced by healed infarct in rats. J Am Coll Cardiol 2003. [DOI: 10.1016/s0735-1097(03)81879-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Goldenberg RC, Gonçalves A, de Carvalho ACC. Chapter 28: Gap Junctions Are Specifically Disrupted by Trypanosoma cruzi Infection. Gap Junctions - Molecular Basis of Cell Communication in Health and Disease 1999. [DOI: 10.1016/s0070-2161(08)61032-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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