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Drennan SE, Burge KY, Szyld EG, Eckert JV, Mir AM, Gormley AK, Schwartz RM, Daves SM, Thompson JL, Burkhart HM, Chaaban H. Clinical and Laboratory Predictors for the Development of Low Cardiac Output Syndrome in Infants Undergoing Cardiopulmonary Bypass: A Pilot Study. J Clin Med 2021; 10:jcm10040712. [PMID: 33670210 PMCID: PMC7916966 DOI: 10.3390/jcm10040712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/02/2021] [Accepted: 02/08/2021] [Indexed: 01/31/2023] Open
Abstract
Cardiac surgery employing cardiopulmonary bypass exposes infants to a high risk of morbidity and mortality. The objective of this study was to assess the utility of clinical and laboratory variables to predict the development of low cardiac output syndrome, a frequent complication following cardiac surgery in infants. We performed a prospective observational study in the pediatric cardiovascular ICU in an academic children’s hospital. Thirty-one patients with congenital heart disease were included. Serum levels of nucleosomes and a panel of 20 cytokines were measured at six time points in the perioperative period. Cardiopulmonary bypass patients were characterized by increased levels of interleukin-10, -6, and -1α upon admission to the ICU compared to non-bypass cardiac patients. Patients developing low cardiac output syndrome endured longer aortic cross-clamp time and required greater inotropic support at 12 h postoperatively compared to bypass patients not developing the condition. Higher preoperative interleukin-10 levels and 24 h postoperative interleukin-8 levels were associated with low cardiac output syndrome. Receiver operating characteristic curve analysis demonstrated a moderate capability of aortic cross-clamp duration to predict low cardiac output syndrome but not IL-8. In conclusion, low cardiac output syndrome was best predicted in our patient population by the surgical metric of aortic cross-clamp duration.
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Affiliation(s)
- Sarah E. Drennan
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (S.E.D.); (K.Y.B.); (E.G.S.); (J.V.E.)
| | - Kathryn Y. Burge
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (S.E.D.); (K.Y.B.); (E.G.S.); (J.V.E.)
| | - Edgardo G. Szyld
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (S.E.D.); (K.Y.B.); (E.G.S.); (J.V.E.)
| | - Jeffrey V. Eckert
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (S.E.D.); (K.Y.B.); (E.G.S.); (J.V.E.)
| | - Arshid M. Mir
- Section of Cardiology, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;
| | - Andrew K. Gormley
- Section of Pediatric Critical Care, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;
| | - Randall M. Schwartz
- Department of Anesthesiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.M.S.); (S.M.D.)
| | - Suanne M. Daves
- Department of Anesthesiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.M.S.); (S.M.D.)
| | - Jess L. Thompson
- Department of Cardiovascular Surgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (J.L.T.); (H.M.B.)
| | - Harold M. Burkhart
- Department of Cardiovascular Surgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (J.L.T.); (H.M.B.)
| | - Hala Chaaban
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (S.E.D.); (K.Y.B.); (E.G.S.); (J.V.E.)
- Correspondence:
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Smith SB, Dampier W, Tozeren A, Brown JR, Magid-Slav M. Identification of common biological pathways and drug targets across multiple respiratory viruses based on human host gene expression analysis. PLoS One 2012; 7:e33174. [PMID: 22432004 PMCID: PMC3303816 DOI: 10.1371/journal.pone.0033174] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Accepted: 02/08/2012] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Pandemic and seasonal respiratory viruses are a major global health concern. Given the genetic diversity of respiratory viruses and the emergence of drug resistant strains, the targeted disruption of human host-virus interactions is a potential therapeutic strategy for treating multi-viral infections. The availability of large-scale genomic datasets focused on host-pathogen interactions can be used to discover novel drug targets as well as potential opportunities for drug repositioning. METHODS/RESULTS In this study, we performed a large-scale analysis of microarray datasets involving host response to infections by influenza A virus, respiratory syncytial virus, rhinovirus, SARS-coronavirus, metapneumonia virus, coxsackievirus and cytomegalovirus. Common genes and pathways were found through a rigorous, iterative analysis pipeline where relevant host mRNA expression datasets were identified, analyzed for quality and gene differential expression, then mapped to pathways for enrichment analysis. Possible repurposed drugs targets were found through database and literature searches. A total of 67 common biological pathways were identified among the seven different respiratory viruses analyzed, representing fifteen laboratories, nine different cell types, and seven different array platforms. A large overlap in the general immune response was observed among the top twenty of these 67 pathways, adding validation to our analysis strategy. Of the top five pathways, we found 53 differentially expressed genes affected by at least five of the seven viruses. We suggest five new therapeutic indications for existing small molecules or biological agents targeting proteins encoded by the genes F3, IL1B, TNF, CASP1 and MMP9. Pathway enrichment analysis also identified a potential novel host response, the Parkin-Ubiquitin Proteasomal System (Parkin-UPS) pathway, which is known to be involved in the progression of neurodegenerative Parkinson's disease. CONCLUSIONS Our study suggests that multiple and diverse respiratory viruses invoke several common host response pathways. Further analysis of these pathways suggests potential opportunities for therapeutic intervention.
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Affiliation(s)
- Steven B. Smith
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- Computational Biology, Quantitative Sciences, GlaxoSmithKline, King of Prussia, Pennsylvania, United States of America
| | - William Dampier
- Center for Integrated Bioinformatics, Drexel University, Philadelphia, Pennsylvania, United States of America
| | - Aydin Tozeren
- Center for Integrated Bioinformatics, Drexel University, Philadelphia, Pennsylvania, United States of America
| | - James R. Brown
- Computational Biology, Quantitative Sciences, GlaxoSmithKline, Collegeville, Pennsylvania, United States of America
| | - Michal Magid-Slav
- Computational Biology, Quantitative Sciences, GlaxoSmithKline, King of Prussia, Pennsylvania, United States of America
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Abstract
Viruses are the most common cause of myocarditis in economically advanced countries. Enteroviruses and adenoviruses are the most common etiologic agents. Viral myocarditis is a triphasic process. Phase 1 is the period of active viral replication in the myocardium during which the symptoms of myocardial damage range from none to cardiogenic shock. If the disease process continues, it enters phase 2, which is characterized by autoimmunity triggered by viral and myocardial proteins. Heart failure often appears for the first time in phase 2. Phase 3, dilated cardiomyopathy, is the end result in some patients. Diagnostic procedures and treatment should be tailored to the phase of disease. Viral myocarditis is a significant cause of dilated cardiomyopathy, as proved by the frequent presence of viral genomic material in the myocardium, and by improvement in ventricular function by immunomodulatory therapy. Myocarditis of any etiology usually presents with heart failure, but the second most common presentation is ventricular arrhythmia. As a result, myocarditis is one of the most common causes of sudden death in young people and others without preexisting structural heart disease. Myocarditis can be definitively diagnosed by endomyocardial biopsy. However, it is clear that existing criteria for the histologic diagnosis need to be refined, and that a variety of molecular markers in the myocardium and the circulation can be used to establish the diagnosis. Treatment of myocarditis has been generally disappointing. Accurate staging of the disease will undoubtedly improve treatment in the future. It is clear that immunosuppression and immunomodulation are effective in some patients, especially during phase 2, but may not be as useful in phases 1 and 3. Since myocarditis is often selflimited, bridging and recovery therapy with circulatory assistance may be effective. Prevention by immunization or receptor blocking strategies is under development. Giant cell myocarditis is an unusually fulminant form of the disease that progresses rapidly to heart failure or sudden death. Rapid onset of disease in young people, especially those with other autoimmune manifestations, accompanied by heart failure or ventricular arrhythmias, suggests giant cell myocarditis. Peripartum cardiomyopathy in economically developed countries is usually the result of myocarditis.
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Affiliation(s)
- James T. Willerson
- The University of Texas Health Science Center in Houston, Houston, ,Texas Heart Institute, Houston, TX USA
| | - Hein J. J. Wellens
- Department of Cardiology, University of Maastricht, Masstricht, The Netherlands
| | - Jay N. Cohn
- Rasmussen Center for Cardiovascular Disease Prevention Cardiovascular Division, University of Minnesota, Minneapolis, MN USA
| | - David R. Holmes
- Cardiovascular Medicine, Mayo Clinic College of Medicine, Rochester, MN USA
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Truter SL, Dumlao TF, Lee JA, Lee E, Supino PG, Borer JS. Vesnarinone-Mediated Alterations of Gene Expression in Cardiac Fibroblasts from Aortic Regurgitant Hearts. Am J Ther 2004; 11:328-36. [PMID: 15356428 DOI: 10.1097/01.mjt.0000117522.18923.03] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Pathologic fibrosis precedes heart failure (CHF) and death in experimental aortic regurgitation (AR). Vesnarinone, a positively inotropic quinolone derivative, suppresses survival of fibroblasts (CF) from hearts with chronic experimental AR. To explore further the potential effects of vesnarinone on cardiac fibrosis in AR, we tested the hypothesis that vesnarinone suppresses gene expression induced by AR in CF. Differentially expressed genes were isolated by suppression subtractive hybridization (SSH) in CF from hearts of 2 New Zealand White rabbits with surgically induced AR compared with 2 normal rabbits. In cultured AR-CF treated with and without vesnarinone (4 doses, including the dose that had caused maximal survival suppression in cultured AR-CF), drug effect was assessed on expression of genes found to be up-regulated by AR. SSH, reverse Northern analysis, and Northern analysis indicated that at doses several orders of magnitude lower than those used for treatment in CHF vesnarinone significantly down-regulated 2 genes (thrombospondin 1, annexin II) up-regulated by AR. The study confirmed earlier findings of AR-mediated alteration in expression of genes that code for noncollagen extracellular matrix (ECM) proteins. Thus, in CF conditioned by exposure to AR, vesnarinone at relatively low doses suppresses genes coding for 2 noncollagen ECM proteins up-regulated by AR. These pharmacologic effects may underlie potentially therapeutic mitigation of fibrosis by vesnarinone.
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Affiliation(s)
- Sharada L Truter
- Division of Cardiovascular Pathophysiology, Weill Medical College of Cornell University, New York, NY 10021, USA
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Kawamata H, Omotehara F, Nakashiro KI, Uchida D, Hino S, Fujimori T. Vesnarinone: a differentiation-inducing anti-cancer drug. Anticancer Drugs 2003; 14:391-5. [PMID: 12853878 DOI: 10.1097/00001813-200307000-00001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Vesnarinone has been shown to be a unique anti-proliferating, differentiation-inducing and apoptosis inducing drug against several human malignancies, including leukemia and several solid tumors. Furthermore, vesnarinone potentiates the effect of conventional cytotoxic chemotherapy or radiation therapy. Combination of differentiation-inducing therapy by vesnarinone with conventional chemotherapy or radiation therapy might be second- or third-line therapy in patients with advanced cancer. Analysis of the molecular mechanisms of the tumor differentiation therapy by vesnarinone might provide selective and targeted molecules for novel tumor dormancy therapy.
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Affiliation(s)
- Hitoshi Kawamata
- Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine, Mibu, Tochigi, Japan.
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Wheeler DS, Kooy NW. A formidable challenge: the diagnosis and treatment of viral myocarditis in children. Crit Care Clin 2003; 19:365-91. [PMID: 12848311 DOI: 10.1016/s0749-0704(03)00006-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
It is generally well accepted that one third of patients with viral myocarditis experience a complete recovery of normal cardiac function, one third improve clinically but show residual cardiac dysfunction, and one third experience chronic heart failure and die or require heart transplantation. It is hoped that a better understanding of the underlying cause and pathogenesis of this disease will increase the number of patients who experience a complete recovery. New advances in both the diagnosis and treatment of viral myocarditis continue to enter clinical practice at a rapid pace, and it is likely that a genomic approach to the diagnostic evaluation and treatment of this disease will become possible in the near future. Viral myocarditis, however, will remain a significant diagnosticand therapeutic challenge to both physicians and scientists alike.
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Affiliation(s)
- Derek S Wheeler
- Division of Critical Care Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
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Parissis J, Filippatos G, Nikolaou V, Adamopoulos S. Cytokines and anti-cytokine therapeutic approaches to chronic heart failure. Eur J Intern Med 2002; 13:356. [PMID: 12225779 DOI: 10.1016/s0953-6205(02)00092-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Recent investigations have shown that, in addition to neurohormonal system overactivation, another class of biologically active molecules, termed cytokines, is also overexpressed in the setting of chronic heart failure and participates actively in the progression of the syndrome. In this article, we present recent experimental and clinical data describing the pathophysiological role of cytokines in left ventricular remodeling, endothelial dysfunction, and peripheral myopathy characterizing the progression of chronic heart failure, as well as novel therapeutic approaches aimed at attenuating the deleterious effects of cytokines on the cardiovascular system.
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Affiliation(s)
- John Parissis
- Cardiology Department, Amalia Fleming Hospital, Riga Ferreou 18-20, 15122, Maroussi, Athens, Greece
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Pecherskaya A, Rubin E, Solem M. Alterations in Insulin-Like Growth Factor-I Signaling in Cardiomyocytes From Chronic Alcohol-Exposed Rats. Alcohol Clin Exp Res 2002. [DOI: 10.1111/j.1530-0277.2002.tb02633.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Miyamoto T, Matsumori A, Hwang MW, Nishio R, Ito H, Sasayama S. Therapeutic effects of FTY720, a new immunosuppressive agent, in a murine model of acute viral myocarditis. J Am Coll Cardiol 2001; 37:1713-8. [PMID: 11345389 DOI: 10.1016/s0735-1097(01)01204-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVES This study examines the efficacy of FTY720 (FTY), a new immunosuppressor, in the treatment of acute viral myocarditis in a murine model. BACKGROUND Immunosuppressive agents have no proven therapeutic efficacy in experimental or clinical myocarditis. METHODS Encephalomyocarditis virus was inoculated i.p. in DBA/2 mice on day 0. Postinoculation treatment consisted of FTY 10 mg/kg/day p.o. (FTY group), or cyclosporine A (CsA) 40 mg/kg/day p.o. (CsA group) or distilled water p.o. only (control group). Survival until day 14, as well as cardiac histopathology, virus concentrations, cytokines (interleukin [IL]-2, IL-12, interferon [IFN]-gamma and tumor necrosis factor [TNF]-alpha) and nitric oxide (NO) on day 5 were examined. RESULTS In the control and CsA groups, all mice died within 10 and 7 days, respectively. However, in the FTY group, 27% of the animals survived up to day 14. Compared with the control group, 1) histological scores were significantly lower in the FTY group but unchanged in the CsA group; 2) virus concentration was significantly higher in the CsA group but not in the FTY group; 3) expressions of IL-2, IL-12 and IFN-gamma in the heart were suppressed in both the FTY and CsA groups, though suppression was weaker in the FTY group; 4) TNF-alpha and NO were significantly increased in the CsA group but not in the FTY group. CONCLUSIONS FTY720 had a significant therapeutic effect in acute experimental myocarditis without inducing excessive virus replication. This report is the first to describe a beneficial effect by an immunosuppressive agent in the treatment of acute viral myocarditis.
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Affiliation(s)
- T Miyamoto
- Department of Cardiovascular Medicine, Kyoto University, Japan
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10
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Gloss B, Villegas S, Villarreal FJ, Moriscot A, Dillmann WH. Thyroid hormone-induced stimulation of the sarcoplasmic reticulum Ca(2+) ATPase gene is inhibited by LIF and IL-6. Am J Physiol Endocrinol Metab 2000; 278:E738-43. [PMID: 10751209 DOI: 10.1152/ajpendo.2000.278.4.e738] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We investigated the effects of the leukemia inhibitory factor (LIF) and interleukin-6 (IL-6) on 3,3', 5-triiodo-L-thyronine, or thyroid hormone (T(3))-stimulated sarcoplasmic reticulum Ca(2+) ATPase (SERCA2) gene expression on cultured neonatal rat cardiac myocytes. A reduction of T(3) induced increases in SERCA2 mRNA levels after co-treatment with LIF or IL-6. To investigate for the molecular mechanism(s) responsible for the blunted gene expression, a 3.2-kb SERCA2 promoter construct containing a reporter gene was transfected into cardiac myocytes. T(3) treatment stimulated transcriptional activity twofold, whereas co-treatment with T(3) and either of the cytokines caused an inhibition of T(3)-induced SERCA2 transcriptional activity. A T(3)-responsive 0.6-kb SERCA2 construct also showed a similar inhibition by cytokines. Cytokine inhibition of SERCA2 transcriptional activity was also evident when a 0.6-kb SERCA2 mutant, T(3)-unresponsive promoter construct was used. Treatment with T(3) and cytokines showed a significant decrease in transcription when a reporter construct was used that was comprised of direct repeats of SERCA2 thyroid response element I. These data provide evidence for cytokine-mediated inhibitory effects on the SERCA2 promoter that may be mediated by interfering with T(3) action.
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Affiliation(s)
- B Gloss
- Department of Medicine, University of California San Diego, La Jolla, California 92093-0618, USA
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Okuno M, Nakagawa M, Shimada M, Saito M, Hishinuma S, Yamauchi-Takihara K. Expressional patterns of cytokines in a murine model of acute myocarditis: early expression of cardiotrophin-1. J Transl Med 2000; 80:433-40. [PMID: 10744079 DOI: 10.1038/labinvest.3780048] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
To determine the role of cytokines in acute myocarditis, we examined expressional patterns of cardiotrophin-1 (CT-1), TNF-alpha, and IL-1alpha in a murine model of acute myocarditis. Ten-day-old Institute of Cancer Research mice were injected with Coxsackievirus B3 and killed on Days 1, 2, 3, 4, 5, 7, 10, 14, and 28 of injection. TNF-alpha and IL-1alpha expressions were investigated on histological sections from each heart, and mRNA expression of TNF-alpha, IL-1alpha, and CT-1 in the heart was examined by reverse transcription-polymerase chain reaction and RNase protection assay. To determine myocardial regeneration, cardiomyocytic DNA synthesis was investigated using bromodeoxyuridine on Days 3, 5, 7, and 10, and the labeling index was calculated in each heart. Age-matched uninfected mice were used as controls. TNFalpha and IL-1alpha expression was first detected in the cardiomyocytes on Day 3 and reached the maximum level on Day 7, when inflammatory changes were most prominent. Although an increased expression of TNFalpha and IL-1alpha mRNA was also detected on Day 3, CT-1 mRNA expression was distinctly augmented on Day 2. The labeling indices in the hearts with myocarditis were significantly higher than in those of the controls in all of the time points examined. CT-1 expression preceded TNF-alpha and IL-1alpha expressions and active DNA synthesis in a murine model of acute myocarditis. All CVB3-infected mice with anti-glycoprotein-130 antibody treatment died within 6 days. CT-1 may exert a protective role by modulating cytokine production and by inducing cardiomyocytic proliferation in CVB3-infected murine hearts.
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Affiliation(s)
- M Okuno
- Department of Pediatrics, Shiga University of Medical Science, Japan.
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12
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Gullestad L, Aukrust P, Ueland T, Espevik T, Yee G, Vagelos R, Frøland SS, Fowler M. Effect of high- versus low-dose angiotensin converting enzyme inhibition on cytokine levels in chronic heart failure. J Am Coll Cardiol 1999; 34:2061-7. [PMID: 10588224 DOI: 10.1016/s0735-1097(99)00495-7] [Citation(s) in RCA: 167] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES We examined the effect of long-term treatment with two doses of the angiotensin converting enzyme (ACE) inhibitor enalapril on various immunological variables in patients with chronic congestive heart failure (CHF). BACKGROUND Immunological mediators are increasingly recognized to play a pathogenic role in the pathophysiology of CHF. Whether ACE inhibitor therapy modifies immunological variables has not previously been investigated. METHODS Seventy-five patients (mean age 52 +/- 11 years) with CHF were randomized between low-(5 m g daily) and high-dose (40 mg daily) enalapril in a double-blind trial. Circulating levels of immunological parameters (i.e., proinflammatory cytokines, chemokines and adhesion molecules) were measured at baseline, at 10 weeks and at the end of the study (34 weeks). RESULTS All immunological parameters, except soluble interleukin (IL)-6 receptor, were increased in CHF compared with 21 healthy controls. During the study immunoreactive IL-6 levels decreased (p < 0.05) and soluble IL-6 receptor increased (p < 0.05) during high-dose but not during low-dose enalapril therapy. Furthermore, IL-6 bioactivity decreased only during the high-dose (p < 0.001), resulting in a significant difference in change during treatment between the two dosage groups (p < 0.001). This decrease in IL-6 bioactivity was significantly associated with decreased interventricular septum thickness as assessed by echocardiography (r = 0.56, p = 0.013). No other variables changed during treatment. CONCLUSIONS In patients with severe CHF, high-dose enalapril therapy is associated with a significant decrease in IL-6 activity. However, despite treatment with a high-dose ACE inhibitor, a persistent immune activation exists in these patients which may be of importance for the progression of CHF.
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Affiliation(s)
- L Gullestad
- Section of Clinical Immunology and Infectious Diseases and Research Institute for Internal Medicine, Medical Department A, Rikshospitalet University Hosptial, Oslo, Norway.
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13
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Young PR. Pharmacological modulation of cytokine action and production through signaling pathways. Cytokine Growth Factor Rev 1998; 9:239-57. [PMID: 9918123 DOI: 10.1016/s1359-6101(98)00011-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The action or production of cytokines is mediated through a number of signal transduction pathways which have been elucidated recently. These include pathways integrating the activation of extracellular receptors and subsequent intracellular events leading to alterations of gene expression, cytoskeletal organization, DNA synthesis and cell survival, and the direct activation of intracellular transcription factors via cell permeable hormones. Discovery and characterization of many of these pathways has been aided by the use of compounds which inhibit them. In turn the inhibitors, many of which are already in the clinic, have provided significant insight into the pharmacological importance of each pathway and its potential for providing more potent, selective and safer alternatives. This review summarizes the current state of knowledge about several of these pathways, how they regulate cytokine action or production, and their potential for pharmacological intervention.
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Affiliation(s)
- P R Young
- Department of Molecular Biology UW2101, SmithKline Beecham Pharmaceuticals, King of Prussia, PA 19406-0939, USA.
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