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Fontecave-Jallon J, Flénet T, Eynard C, Guméry PY, Boucher F, Tanguy S. Inductive plethysmography in rats: towards a new standard for longitudinal non-invasive cardiac output monitoring in preclinical studies. Physiol Meas 2018; 39:095006. [DOI: 10.1088/1361-6579/aad7ec] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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A Novel Role of Irbesartan in Gastroprotection against Indomethacin-Induced Gastric Injury in Rats: Targeting DDAH/ADMA and EGFR/ERK Signaling. Sci Rep 2018. [PMID: 29523851 PMCID: PMC5844881 DOI: 10.1038/s41598-018-22727-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The advent of angiotensin II type 1 receptor blockers (ARBs) as intriguing gastroprotective candidates and the superior pharmacokinetics and pharmacodynamics displayed by irbesartan compared to many other ARBs raised the interest to investigate its gastroprotective potential in a rat model of gastric injury. Irbesartan (50 mg/Kg) was orally administered to male Wistar rats once daily for 14 days; thereafter gastric injury was induced by indomethacin (60 mg/Kg, p.o). Irbesartan reduced gastric ulcer index, gastric acidity, and ameliorated indomethacin-induced gastric mucosal apoptotic and inflammatory aberrations, as demonstrated by hampering caspase-3, prostaglandin E2 and tumor necrosis factor-alpha levels and cyclooxygenase-2 mRNA expression. This ARB increased mucosal dimethylarginine dimethylaminohydrolase-1 (DDAH-1) gene expression and decreased elevated levels of matrix metalloproteinase-9, asymmetric dimethylarginine (ADMA), epidermal growth factor receptor (EGFR) mRNA and phosphorylated extracellular signal-regulated kinase 1 and 2 (pERK1/2). Histopathological evaluation corroborated biochemical findings. Overall efficacy of irbesartan was comparable to ranitidine, the widely used H2 receptor blocker. In conclusion, irbesartan exerts significant gastroprotection against indomethacin-induced mucosal damage via acid-inhibitory, anti-inflammatory, anti-apoptotic and extracellular matrix remodeling mechanisms that are probably mediated, at least partly, by down-regulating DDAH/ADMA and EGFR/ERK1/2 signaling.
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Hedya SA, Safar MM, Bahgat AK. Cilostazol Mediated Nurr1 and Autophagy Enhancement: Neuroprotective Activity in Rat Rotenone PD Model. Mol Neurobiol 2018; 55:7579-7587. [DOI: 10.1007/s12035-018-0923-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 01/22/2018] [Indexed: 12/12/2022]
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Liao Y, Wang Y. Cardiovascular Immunology Research in Wuhan Union Hospital: Over the Past 25 years. CARDIOVASCULAR INNOVATIONS AND APPLICATIONS 2017. [DOI: 10.15212/cvia.2016.0067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Flenet T, Fontecave-Jallon J, Tanguy S, Boucher F, Baconnier P, Gumery PY. Non-invasive cardiac output monitoring in pharmacology: A plethysmographie solution in rats. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2016; 2016:4933-4936. [PMID: 28269375 DOI: 10.1109/embc.2016.7591834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cardiovascular monitoring is of great importance in pharmacology but there is a lack of convenient non-invasive alternatives. Hence, we aim to evaluate the relevance of inductive plethysmography (IP) in preclinical cardiac studies. An IP system was specifically designed for rat. Its evaluation carried out using a mechanical test bench has shown appropriate instrumental performances for cardiac monitoring in rats. Measurements were also performed during a volume overload hemodynamic challenge in vivo in rats. The cardiac output variation has similar kinetic and amplitude when compared to results of previous studies. This suggests that our system is suitable for cardiac output monitoring in rat.
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Ziypak T, Halici Z, Alkan E, Akpinar E, Polat B, Adanur S, Cadirci E, Ferah I, Bayir Y, Karakus E, Mercantepe T. Renoprotective effect of aliskiren on renal ischemia/reperfusion injury in rats: electron microscopy and molecular study. Ren Fail 2014; 37:343-54. [DOI: 10.3109/0886022x.2014.991327] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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Wu B, Lin R, Dai R, Chen C, Wu H, Hong M. Valsartan attenuates oxidative stress and NF-κB activation and reduces myocardial apoptosis after ischemia and reperfusion. Eur J Pharmacol 2013; 705:140-7. [PMID: 23499691 DOI: 10.1016/j.ejphar.2013.02.036] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 02/14/2013] [Accepted: 02/24/2013] [Indexed: 12/19/2022]
Abstract
Myocardial apoptosis is primarily triggered during reperfusion. Various mechanisms are involved, including oxidative stress which activates the translocation of nuclear factor-kappa B (NF-κB) and stimulates the release of tumor necrosis factor-alpha (TNF-α). However, the relative contribution of the renin angiotensin system (RAS) to the development of myocardial apoptosis during reperfusion remains unknown. In the present study, we examined whether inhibition of RAS with Valsartan, an Angiotensin II 1 receptor (AT1) antagonist, could reduce apoptosis during reperfusion. We constructed a rat model of myocardial ischemia reperfusion injury. Rats were pretreated with Valsartan for 2 weeks, and then subjected to 30 min ischemia and 4h reperfusion. Apoptosis was detected by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL). Levels of malondialdehyde (MDA), superoxide dismutase (SOD), TNF-α, and caspase-3 were detected by ELISA. NF-κB, Nicotinamide Adenine Dinucleotide Phosphate (NADPH) oxidase expression was assessed by Western blot analysis. Valsartan inhibited apoptosis (TUNEL staining) in ischemic myocardium (P<0.05), consistent with reduced caspase-3 activity. Valsartan also inhibited of NF-κB translocation to nucleus (P<0.05), and decreased plasma TNF-α levels (P<0.05). Valsartan pretreatment suppressed MDA content and preserved SOD activity, consistent with reduced NADPH oxidase expression (P<0.01). These data provided substantial evidence that RAS was involved in NF-κB activation, mediated by AT1 dependent oxidative stress; thus, RAS might ultimately promote myocardial apoptosis during reperfusion pathogenesis.
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Affiliation(s)
- Bing Wu
- Department of Cardiology, First Hospital of Quanzhou Affiliated to Fujian Medical University, 250 East Street, Quanzhou 362000, China
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Functionalized dendrimer-based delivery of angiotensin type 1 receptor siRNA for preserving cardiac function following infarction. Biomaterials 2013; 34:3729-36. [PMID: 23433774 DOI: 10.1016/j.biomaterials.2013.02.008] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 02/03/2013] [Indexed: 12/27/2022]
Abstract
Cardiovascular disease (CVD) is the leading cause of death throughout the world and much pathology is associated with upregulation of inflammatory genes. Gene silencing using RNA interference is a powerful tool in regulating gene expression, but its application in CVDs has been prevented by the lack of efficient delivery systems. We report here the development of tadpole dendrimeric materials for siRNA delivery in a rat ischemia-reperfusion (IR) model. Angiotensin II (Ang II) type 1 receptor (AT1R), the major receptor that mediates most adverse effects of Ang II, was chosen to be the silencing targeting. Among the three tadpole dendrimers synthesized, the oligo-arginine conjugated dendrimer loaded with siRNA demonstrated effective down-regulation in AT1R expression in cardiomyocytes in vitro. When the dendrimeric material was applied in vivo, the siRNA delivery prevented the increase in AT1R levels and significantly improved cardiac function recovery compared to saline injection or empty dendrimer treated groups after IR injury. These experiments demonstrate a potential treatment for dysfunction caused by IR injury and may represent an alternative to AT1R blockade.
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Effects of a novel bradykinin B1 receptor antagonist and angiotensin II receptor blockade on experimental myocardial infarction in rats. PLoS One 2012; 7:e51151. [PMID: 23236443 PMCID: PMC3517424 DOI: 10.1371/journal.pone.0051151] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Accepted: 10/29/2012] [Indexed: 01/06/2023] Open
Abstract
Background The aim of the present study was to evaluate the cardiovascular effects of the novel bradykinin B1 receptor antagonist BI-113823 following myocardial infarction (MI) and to determine whether B1 receptor blockade alters the cardiovascular effects of an angiotensin II type 1 (AT1) receptor antagonist after MI in rats. Methodology/Principal Findings Sprague Dawley rats were subjected to permanent occlusion of the left descending coronary artery. Cardiovascular function was determined at 7 days post MI. Treatment with either B1 receptor antagonist (BI-113823) or AT1 receptor antagonist (irbesartan) alone or in combination improved post-MI cardiac function as evidenced by attenuation of elevated left ventricular end diastolic pressure (LVEDP); greater first derivative of left ventricular pressure (± dp/dt max), left ventricle ejection fraction, fractional shorting, and better wall motion; as we as reductions in post-MI up-regulation of matrix metalloproteinases 2 (MMP-2) and collagen III. In addition, the cardiac up-regulation of B1 receptor and AT1 receptor mRNA were markedly reduced in animals treated with BI 113823, although bradykinin B2 receptor and angiotensin 1 converting enzyme (ACE1) mRNA expression were not significantly affected by B1 receptor blockade. Conclusions/Significance The present study demonstrates that treatment with the novel B1 receptor antagonist, BI-113823 improves post-MI cardiac function and does not influence the cardiovascular effects of AT1 receptor antagonist following MI.
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Tanguy S, Grauzam S, de Leiris J, Boucher F. Impact of dietary selenium intake on cardiac health: experimental approaches and human studies. Mol Nutr Food Res 2012; 56:1106-21. [PMID: 22760983 DOI: 10.1002/mnfr.201100766] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Selenium, a dietary trace mineral, essential for humans and animals, exerts its effects mainly through its incorporation into selenoproteins. Adequate selenium intake is needed to maximize the activity of selenoproteins, among which glutathione peroxidases have been shown to play a major role in cellular defense against oxidative stress initiated by excess reactive oxygen species. In humans, a low selenium status has been linked to increased risk of various diseases, including heart disease. The main objective of this review is to present current knowledge on the role of selenium in cardiac health. Experimental studies have shown that selenium may exert protective effects on cardiac tissue in animal models involving oxidative stress. Because of the narrow safety margin of this mineral, most interventional studies in humans have reported inconsistent findings. Major determinants of selenium status in humans are not well understood and several nondietary factors might be associated with reduced selenium status. In this review, we discuss recent studies regarding the role of selenoproteins in the cardiovascular system, the effect of dietary intake on selenium status, the impact of selenium status on cardiac health, and the cellular mechanisms that can be involved in the physiological and toxic effects of selenium.
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Moro C, Grauzam S, Ormezzano O, Toufektsian MC, Tanguy S, Calabrese P, Coll JL, Bak I, Juhasz B, Tosaki A, de Leiris J, Boucher F. Inhibition of cardiac leptin expression after infarction reduces subsequent dysfunction. J Cell Mol Med 2012; 15:1688-94. [PMID: 20731748 PMCID: PMC4373359 DOI: 10.1111/j.1582-4934.2010.01154.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Leptin is known to exert cardiodepressive effects and to induce left ventricular (LV) remodelling. Nevertheless, the autocrine and/or paracrine activities of this adipokine in the context of post-infarct dysfunction and remodelling have not yet been elucidated. Therefore, we have investigated the evolution of myocardial leptin expression following myocardial infarction (MI) and evaluated the consequences of specific cardiac leptin inhibition on subsequent LV dysfunction. Anaesthetized rats were subjected to temporary coronary occlusion. An antisense oligodesoxynucleotide (AS ODN) directed against leptin mRNA was injected intramyocardially along the border of the infarct 5 days after surgery. Cardiac morphometry and function were monitored by echocardiography over 11 weeks following MI. Production of myocardial leptin and pro-inflammatory cytokines interleukin (IL)-1β and IL-6 were assessed by ELISA. Our results show that (1) cardiac leptin level peaks 7 days after reperfused MI; (2) intramyocardial injection of leptin-AS ODN reduces early IL-1β and IL-6 overexpression and markedly protects contractile function. In conclusion, our findings demonstrate that cardiac leptin expression after MI could contribute to the evolution towards heart failure through autocrine and/or paracrine actions. The detrimental effect of leptin could be mediated by pro-inflammatory cytokines such as IL-1β and IL-6. Our data could constitute the basis of new therapeutic approaches aimed to improve post-MI outcome.
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Affiliation(s)
- C Moro
- Laboratoire TIMC-IMAG, UMR 5525 CNRS - University of Grenoble, Grenoble, France
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Telmisartan attenuates isoproterenol-induced cardiac remodeling in rats via regulation of cardiac adiponectin expression. Acta Pharmacol Sin 2011; 32:449-55. [PMID: 21399654 DOI: 10.1038/aps.2010.231] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
AIM To investigate whether telmisartan (Telm) pretreatment attenuates isoproterenol (Iso)-induced postinfarction remodeling (PIR) in rats, and whether the effect of Telm is associated with cardiac expression of adiponectin. METHODS PIR was induced in male Wistar rats with two consecutive injections of Iso (80 mg/kg, sc) at an interval of 24 h. Primary culture of ventricular myocytes from neonatal rats was prepared. Iso-induced cardiomyocyte injury was assessed based on cell growth and lactate dehydrogenase (LDH) activity. Cardiac adiponectin expression was measured using qRT-PCR and immunoblot analysis. RESULTS In the rats with PIR, Telm (10 mg·kg(-1)·d(-1), po for 65 d) suppressed Iso-induced increases in gravimetric parameters, cardiomyocyte diameter and collagen volume fraction, but had no effect on Iso-induced myocardial hypertrophy and interstitial fibrosis. The protective effect of Telm was associated with enhanced protein expression of cardiac adiponectin. In cultured cardiomyocytes, Telm (5-20 μmol/L) inhibited the cell death and LDH release induced by Iso (10 μmol/L), and reversed Iso-induced reduction in adiponectin protein expression. In cardiomyocytes exposed to Iso (20 μmol/L), GW9662 (30 μmol/L), a selective antagonist of PPAR-γ, blocked the effects of Telm pretreatment on adiponectin protein expression, as well as the protective effects of Telm on Iso-induced cell injury. CONCLUSION Telm attenuates Iso-induced cardiac remodeling and cell injury, which is associated with induction of cardiac adiponectin expression.
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Zhang L, Zhang S, Jiang H, Sun A, Wang Y, Zou Y, Ge J, Chen H. Effects of Statin Therapy on Inflammatory Markers in Chronic Heart Failure: A Meta-analysis of Randomized Controlled Trials. Arch Med Res 2010; 41:464-71. [DOI: 10.1016/j.arcmed.2010.08.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Accepted: 08/23/2010] [Indexed: 11/26/2022]
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González GE, Seropian IM, Krieger ML, Palleiro J, Lopez Verrilli MA, Gironacci MM, Cavallero S, Wilensky L, Tomasi VH, Gelpi RJ, Morales C. Effect of early versus late AT(1) receptor blockade with losartan on postmyocardial infarction ventricular remodeling in rabbits. Am J Physiol Heart Circ Physiol 2009; 297:H375-86. [PMID: 19429818 DOI: 10.1152/ajpheart.00498.2007] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To characterize the temporal activation of the renin-angiotensin system after myocardial infarction (MI) in rabbits, we examined cardiac ANG II type 1 receptor (AT(1)R) expression and ANG II levels from 3 h to 35 days. The effects of losartan (12.5 mg.kg(-1).day(-1)) on functional and histomorphometric parameters when treatment was initiated early (3 h) and late (day 15) post-MI and maintained for different periods of time [short term (4 days), midterm (20 days), and long term (35 days)] were also studied. AT(1)R expression increased in the MI zone at 15 and 35 days (P < 0.05). ANG II levels increased (P < 0.05) in the non-MI zone at 24 h and in the MI zone as well as in plasma at 4 days and then progressively decreased until 35 days. The survival rate was significantly lower in untreated MI and early long-term-treated animals. Diastolic pressure-volume curves in MI at 35 and 56 days shifted to the right (P < 0.05). This shift was even more pronounced in long-term-treated groups (P < 0.05). Contractility decreased (P < 0.05 vs. sham) in the untreated and long-term-treated groups and was attenuated in the midterm-treated group. The early administration of losartan reduced RAM 11-positive macrophages from 4.15 +/- 0.05 to 3.05 +/- 0.02 cells/high-power field (HPF; P < 0.05) and CD45 RO-positive lymphocytes from 2.23 +/- 0.05 to 1.48 +/- 0.01 cells/HPF (P < 0.05) in the MI zone at 4 days. Long-term treatment reduced the scar collagen (MI: 70.50 +/- 2.35% and MI + losartan: 57.50 +/- 2.48, P < 0.05), determined the persistency of RAM 11-positive macrophages (3.02 +/- 0.13 cells/HPF) and CD45 RO-positive lymphocytes (2.77 +/- 0.58 cells/HPF, P < 0.05 vs. MI), and reduced the scar thinning ratio at 35 days (P < 0.05). Consequently, the temporal expressions of cardiac AT(1)R and ANG II post-MI in rabbits are different from those described in other species. Long-term treatment unfavorably modified post-MI remodeling, whereas midterm treatment attenuated this harmful effect. The delay in wound healing (early reduction and late persistency of inflammatory infiltrate) and adverse remodeling observed in long-term-treated animals might explain the unfavorable effect observed in rabbits.
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Affiliation(s)
- Germán E González
- Institute of Cardiovascular Physiopathology, Department of Pathology, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina
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Saegusa S, Fei Y, Takahashi T, Sumino H, Moriya J, Kawaura K, Yamakawa JI, Itoh T, Morimoto S, Nakahashi T, Iwai K, Matsumoto M, Kanda T. Oral administration of candesartan improves the survival of mice with viral myocarditis through modification of cardiac adiponectin expression. Cardiovasc Drugs Ther 2007; 21:155-60. [PMID: 17484035 DOI: 10.1007/s10557-007-6024-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
PURPOSE We examined the effects of the angiotensin II receptor type 1 blocker candesartan on myocarditis injury in a murine model of acute myocarditis. We hypothesized that candesartan improves cardiac damage by inducing cardiac expression of adiponectin. METHODS AND RESULTS We examined changes in heart failure caused by myocarditis in mice by candesartan based on induction of cardiac adiponectin expression. We intraperitoneally injected encephalomyocarditis virus in C3H mice, then orally administered candesartan (10 mg/kg/day) or vehicle (control). The 7 day survival rate was 18% in the control group, but 60% in the candesartan group. The heart weight/body weight ratio in the candesartan group was significantly lower than in the control group. Circulating adiponectin concentrations on day 7 were significantly higher in the candesartan group compared with the control group (7.91 +/- 0.61 vs. 6.04 +/- 2.26 microg/ml, P < 0.05). Comparative expression of cardiac adiponectin mRNA in the candesartan group was significantly higher than in the control group on day 7 (55.4 +/- 41.3 vs. 5.3 +/- 7.7, P < 0.05). Immunohistochemical staining and in situ hybridization showed that cardiac expression of adiponectin protein and mRNA was present in the candesartan group on day 7. CONCLUSION Oral administration of candesartan improves survival and decreases myocardial damage in mice with viral myocarditis and induces expression of cardiac adiponectin. The induction of adiponectin might provide cardioprotective effects against acute heart failure due to viral myocarditis.
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Affiliation(s)
- Seiichiro Saegusa
- Department of General Medicine, Kanazawa Medical University, 1-1, Daigaku, Uchinada-Machi, Kahoku-Gun, Ishikawa, Japan
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Berthonneche C, Toufektsian MC, Tanguy S, Ghezzi C, de Leiris J, Boucher F. Does nitric oxide contribute to progressive cardiac tissue damage and dysfunction after infarction? Antioxid Redox Signal 2007; 9:757-63. [PMID: 17511592 DOI: 10.1089/ars.2007.1561] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Myocardial infarction induces contractile dysfunction and remodeling that can lead to heart failure. Nitric oxide has been proposed as one of the major actors of this pathophysiologic process. We note that N (G)-nitro-L-arginine methyl ester (L-NAME) administration from day 2 to day 7 after myocardial infarction in rats improves stroke volume, preserves cardiac compliance, and reduces infarct expansion. Our observations lead to the hypothesis that the mechanisms by which cytokines contribute to myocardial remodeling and dysfunction in the days after infarction might involve *NO signalling pathways.
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Affiliation(s)
- Corinne Berthonneche
- Laboratoire TIMC-PRETA, UMR5525, IFRT 130, Université Joseph Fourier, Grenoble, France
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