Increased tolerance of the chronically hypoxic immature heart to ischemia. Contribution of the KATP channel.

Abstract:

BACKGROUND:Hypoxia from birth in immature rabbits increases the tolerance of isolated hearts to ischemia compared with age-matched normoxic rabbits. We determined whether this increased tolerance to ischemia was due to an alteration in the ATP-sensitive potassium (KATP) channel and whether increased KATP channel activation was associated with increases in intracellular lactate. METHODS AND RESULTS:Isolated immature rabbit hearts (7 to 10 days old) were perfused with bicarbonate buffer at 39 degrees C in the Langendorff mode at a constant pressure. Saline-filled latex balloons were placed in the left and right ventricles for measurement of developed pressure. A KATP channel agonist (bimakalim) or a KATP channel antagonist (glibenclamide) was added 15 minutes before a global ischemic period of 18 minutes, followed by 35 minutes of reperfusion. Rabbits raised from birth in hypoxic conditions (FIO2 = 0.12) displayed significantly enhanced recovery of developed pressure. The right ventricle was more tolerant of ischemia than the left ventricle in normoxic and hypoxic hearts. Bimakalim (1 mumol/L) increased the recovery of left ventricular developed pressure in normoxic hearts to values not different from those of hypoxic controls (43 +/- 3% to 67 +/- 5%) and slightly increased developed pressure in hypoxic hearts (67 +/- 5% to 72 +/- 5%). Glibenclamide (3 mumol/L) abolished the cardioprotective effect of hypoxia (67 +/- 5% to 43 +/- 5%). Constant-flow studies indicated that the effects of bimakalim and glibenclamide were independent of their actions on coronary flow. Ventricular lactate and lactate dehydrogenase concentrations were elevated in hypoxic hearts compared with normoxic control hearts. CONCLUSIONS:Increased tolerance to ischemia exhibited by chronically hypoxic rabbit hearts is associated with increased activation of the KATP channel. This increased KATP activity may be the result of increased intracellular concentrations of lactate.

journal_name

Circulation

journal_title

Circulation

authors

Baker JE,Curry BD,Olinger GN,Gross GJ

doi

10.1161/01.cir.95.5.1278

subject

Has Abstract

pub_date

1997-03-04 00:00:00

pages

1278-85

issue

5

eissn

0009-7322

issn

1524-4539

journal_volume

95

pub_type

杂志文章
  • Prognostic significance of microvascular obstruction by magnetic resonance imaging in patients with acute myocardial infarction.

    abstract:BACKGROUND:The extent of microvascular obstruction during acute coronary occlusion may determine the eventual magnitude of myocardial damage and thus, patient prognosis after infarction. By contrast-enhanced MRI, regions of profound microvascular obstruction at the infarct core are hypoenhanced and correspond to greate...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/01.cir.97.8.765

    authors: Wu KC,Zerhouni EA,Judd RM,Lugo-Olivieri CH,Barouch LA,Schulman SP,Blumenthal RS,Lima JA

    更新日期:1998-03-03 00:00:00

  • Differential behaviors of atrial versus ventricular fibroblasts: a potential role for platelet-derived growth factor in atrial-ventricular remodeling differences.

    abstract:BACKGROUND:In various heart disease paradigms, atria show stronger fibrotic responses than ventricles. The possibility that atrial and ventricular fibroblasts respond differentially to pathological stimuli has not been examined. METHODS AND RESULTS:We compared various morphological, secretory, and proliferative respon...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.107.748053

    authors: Burstein B,Libby E,Calderone A,Nattel S

    更新日期:2008-04-01 00:00:00

  • Low risk of thrombosis and serious embolic events despite low-intensity anticoagulation. Experience with 1,004 Medtronic Hall valves.

    abstract::One thousand four Medtronic Hall valves (601 mitral, 398 aortic, and five tricuspid) were implanted in 847 patients between December 1979 and June 1987. Total experience at the end of June 1987 was 2,640 patient-years of follow-up. Prothrombin time ratios were reviewed for all patients (16,866 observations), and these...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:

    authors: Butchart EG,Lewis PA,Grunkemeier GL,Kulatilake N,Breckenridge IM

    更新日期:1988-09-01 00:00:00

  • Epidemiology and Mechanisms of De Novo and Persistent Hypertension in the Postpartum Period.

    abstract:BACKGROUND:The pathophysiology of hypertension in the immediate postpartum period is unclear. METHODS AND RESULTS:We studied 988 consecutive women admitted to a tertiary medical center for cesarean section of a singleton pregnancy. The angiogenic factors soluble fms-like tyrosine kinase 1 and placental growth factor, ...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.115.015721

    authors: Goel A,Maski MR,Bajracharya S,Wenger JB,Zhang D,Salahuddin S,Shahul SS,Thadhani R,Seely EW,Karumanchi SA,Rana S

    更新日期:2015-11-03 00:00:00

  • Statin-sensitive dysregulated AT1 receptor function and density in hypercholesterolemic men.

    abstract:BACKGROUND:Hypercholesterolemia causes an upregulation of vascular angiotensin II type 1 (AT1) receptor expression in cell culture and animal models. The presented studies were undertaken to examine AT1 receptor overexpression in hypercholesterolemic men and therapeutic interventions thereof by HMG CoA reductase inhibi...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/01.cir.100.21.2131

    authors: Nickenig G,Bäumer AT,Temur Y,Kebben D,Jockenhövel F,Böhm M

    更新日期:1999-11-23 00:00:00

  • Range-gated pulsed Doppler echocardiographic diagnosis of supracardiac total anomalous pulmonary venous drainage.

    abstract::Three patients with total anomalous pulmonary venous drainage (TAPVD) into the innominate vein were studied by using M-mode and pulsed Doppler echocardiography. An abnormal continuous flow towards the transducer in a suprasternal notch position detected by pulsed Doppler echocardiography in the left hemithorax leftwar...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/01.cir.61.4.841

    authors: Skovránek J,Tůma S,Urbancová D,Samánek M

    更新日期:1980-04-01 00:00:00

  • Missense mutations in plakophilin-2 cause sodium current deficit and associate with a Brugada syndrome phenotype.

    abstract:BACKGROUND:Brugada syndrome (BrS) primarily associates with the loss of sodium channel function. Previous studies showed features consistent with sodium current (INa) deficit in patients carrying desmosomal mutations, diagnosed with arrhythmogenic cardiomyopathy (or arrhythmogenic right ventricular cardiomyopathy). Exp...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.113.003077

    authors: Cerrone M,Lin X,Zhang M,Agullo-Pascual E,Pfenniger A,Chkourko Gusky H,Novelli V,Kim C,Tirasawadichai T,Judge DP,Rothenberg E,Chen HS,Napolitano C,Priori SG,Delmar M

    更新日期:2014-03-11 00:00:00

  • Drug-coated balloon versus standard percutaneous transluminal angioplasty for the treatment of superficial femoral and popliteal peripheral artery disease: 12-month results from the IN.PACT SFA randomized trial.

    abstract:BACKGROUND:Drug-coated balloons (DCBs) have shown promise in improving the outcomes for patients with peripheral artery disease. We compared a paclitaxel-coated balloon with percutaneous transluminal angioplasty (PTA) for the treatment of symptomatic superficial femoral and popliteal artery disease. METHODS AND RESULT...

    journal_title:Circulation

    pub_type: 杂志文章,多中心研究,随机对照试验

    doi:10.1161/CIRCULATIONAHA.114.011004

    authors: Tepe G,Laird J,Schneider P,Brodmann M,Krishnan P,Micari A,Metzger C,Scheinert D,Zeller T,Cohen DJ,Snead DB,Alexander B,Landini M,Jaff MR,IN.PACT SFA Trial Investigators.

    更新日期:2015-02-03 00:00:00

  • Coexistence of sick sinus rhythm and atrial flutter-fibrillation.

    abstract::A 58-year-old man with hypertensive cardiovascular disease and atrial flutter underwent electrophysiologic studies, including multiple intra-atrial recordings and atrial stimulation. Although the surface ECG suggested the presence of atrial flutter, intra-atrial recordings demonstrated the presence of (1) sinus-like r...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/01.cir.63.1.80

    authors: Gomes JA,Kang PS,Matheson M,Gough WB Jr,El-Sherif N

    更新日期:1981-01-01 00:00:00

  • Alternative Strategies to Achieve Cardiovascular Mortality Goals in China and India: A Microsimulation of Target- Versus Risk-Based Blood Pressure Treatment.

    abstract:BACKGROUND:The World Health Organization aims to reduce mortality from chronic diseases including cardiovascular disease (CVD) by 25% by 2025. High blood pressure is a leading CVD risk factor. We sought to compare 3 strategies for treating blood pressure in China and India: a treat-to-target (TTT) strategy emphasizing ...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.115.019985

    authors: Basu S,Yudkin JS,Sussman JB,Millett C,Hayward RA

    更新日期:2016-03-01 00:00:00

  • Early remodeling of perinuclear Ca2+ stores and nucleoplasmic Ca2+ signaling during the development of hypertrophy and heart failure.

    abstract:BACKGROUND:A hallmark of heart failure is impaired cytoplasmic Ca(2+) handling of cardiomyocytes. It remains unknown whether specific alterations in nuclear Ca(2+) handling via altered excitation-transcription coupling contribute to the development and progression of heart failure. METHODS AND RESULTS:Using tissue and...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.114.008927

    authors: Ljubojevic S,Radulovic S,Leitinger G,Sedej S,Sacherer M,Holzer M,Winkler C,Pritz E,Mittler T,Schmidt A,Sereinigg M,Wakula P,Zissimopoulos S,Bisping E,Post H,Marsche G,Bossuyt J,Bers DM,Kockskämper J,Pieske B

    更新日期:2014-07-15 00:00:00

  • Epidermal growth factor receptor blockade mediates smooth muscle cell apoptosis and improves survival in rats with pulmonary hypertension.

    abstract:BACKGROUND:We previously reported that administration of elastase inhibitors reverses fatal pulmonary arterial hypertension (PAH) in rats by inducing smooth muscle cell (SMC) apoptosis. We showed in pulmonary artery (PA) organ culture that the mechanism by which elastase inhibitors induce SMC apoptosis involves repress...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.105.540542

    authors: Merklinger SL,Jones PL,Martinez EC,Rabinovitch M

    更新日期:2005-07-19 00:00:00

  • Regional left ventricular wall thickening. Relation to regional uptake of 18fluorodeoxyglucose and 201Tl in patients with chronic coronary artery disease and left ventricular dysfunction.

    abstract:BACKGROUND:In previous studies comparing regional 201Tl (201Tl) and 18fluorodeoxyglucose (FDG) activity in patients with chronic coronary artery disease and left ventricular dysfunction, we hypothesized that regions with mild-to-moderate reduction in FDG activity and regions with mild-to-moderate irreversible 201Tl def...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/01.cir.86.4.1125

    authors: Perrone-Filardi P,Bacharach SL,Dilsizian V,Maurea S,Frank JA,Bonow RO

    更新日期:1992-10-01 00:00:00

  • Familial congenital complete heart block and maternal systemic lupus erythematosis.

    abstract::A family is reported in which two siblings had congenital complete heart block with resultant congestive heart failure, the father and paternal grandfather show adult-onset conduction defects, and the mother has systemic lupus erythematosis. The interaction of heredity and environment is discussed in this context. A r...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/01.cir.56.6.1103

    authors: Winkler RB,Nora AH,Nora JJ

    更新日期:1977-12-01 00:00:00

  • Increased aortic intima-media thickness: a marker of preclinical atherosclerosis in high-risk children.

    abstract:BACKGROUND:Autopsy studies in children have shown that atherosclerotic lesions begin to develop first in the intima of the aorta. Recent developments in ultrasound techniques have made it possible to visualize the intima-medial thickness of the abdominal aorta directly (aIMT). Therefore, we examined the feasibility of ...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/hc4901.100522

    authors: Järvisalo MJ,Jartti L,Näntö-Salonen K,Irjala K,Rönnemaa T,Hartiala JJ,Celermajer DS,Raitakari OT

    更新日期:2001-12-11 00:00:00

  • Salt, volume and the prevention of hypertension.

    abstract::The evidence supporting the thesis that hypertension can be prevented by eliminating salt from the diet is based on four principal sources: (1) epidemiological studies in unacculturated peoples showing that the prevalence of hypertension is inversely correlated with the degree of salt intake; (2) hemodynamic studies s...

    journal_title:Circulation

    pub_type: 杂志文章,评审

    doi:10.1161/01.cir.53.4.589

    authors: Freis ED

    更新日期:1976-04-01 00:00:00

  • Deficiency of the 5-hydroxytryptamine transporter gene leads to cardiac fibrosis and valvulopathy in mice.

    abstract:BACKGROUND:Serotonin (5-hydroxytryptamine; 5-HT) overproduction is responsible for cardiac valvular disease in patients with carcinoid tumors. Reduced 5-HT inactivation is one proposed mechanism of the valvulopathy observed in individuals treated with the appetite suppressants fenfluramine and phentermine. One key prot...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.105.554667

    authors: Mekontso-Dessap A,Brouri F,Pascal O,Lechat P,Hanoun N,Lanfumey L,Seif I,Benhaiem-Sigaux N,Kirsch M,Hamon M,Adnot S,Eddahibi S

    更新日期:2006-01-03 00:00:00

  • Evaluation of severity of heart failure using ventilatory gas analysis.

    abstract::To evaluate the severity of heart failure, cardiopulmonary exercise testing was performed in 99 normal subjects and in 382 patients with cardiac disease. Anaerobic threshold, peak oxygen uptake, and the ratio of increase in oxygen uptake to work-rate increment were determined by ventilatory and gas exchange measuremen...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:

    authors: Itoh H,Taniguchi K,Koike A,Doi M

    更新日期:1990-01-01 00:00:00

  • Endothelial progenitor cell vascular endothelial growth factor gene transfer for vascular regeneration.

    abstract:BACKGROUND:Previous studies have established that bone marrow-derived endothelial progenitor cells (EPCs) are present in the systemic circulation. In the current study, we investigated the hypothesis that gene transfer can be used to achieve phenotypic modulation of EPCs. METHODS AND RESULTS:In vitro, ex vivo murine v...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/hc0602.103673

    authors: Iwaguro H,Yamaguchi J,Kalka C,Murasawa S,Masuda H,Hayashi S,Silver M,Li T,Isner JM,Asahara T

    更新日期:2002-02-12 00:00:00

  • Abciximab suppresses the rise in levels of circulating inflammatory markers after percutaneous coronary revascularization.

    abstract:BACKGROUND:Previous investigators have shown that systemic markers of inflammation may be increased in patients with acute ischemic syndromes or after percutaneous coronary revascularization and that persistent elevation in these markers is predictive of excess risk of subsequent adverse cardiac events. By virtue of it...

    journal_title:Circulation

    pub_type: 临床试验,杂志文章,多中心研究,随机对照试验

    doi:10.1161/01.cir.104.2.163

    authors: Lincoff AM,Kereiakes DJ,Mascelli MA,Deckelbaum LI,Barnathan ES,Patel KK,Frederick B,Nakada MT,Topol EJ

    更新日期:2001-07-10 00:00:00

  • Cyclooxygenase-2 inhibition increases mortality, enhances left ventricular remodeling, and impairs systolic function after myocardial infarction in the pig.

    abstract:BACKGROUND:Cyclooxygenase (COX)-2 expression in the heart increases after myocardial infarction (MI). In murine models of MI, COX-2 inhibition preserves left ventricular dimensions and function. We studied the effect of selective COX-2 inhibition on left ventricular remodeling and function after MI in a pig model. MET...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.106.647230

    authors: Timmers L,Sluijter JP,Verlaan CW,Steendijk P,Cramer MJ,Emons M,Strijder C,Gründeman PF,Sze SK,Hua L,Piek JJ,Borst C,Pasterkamp G,de Kleijn DP

    更新日期:2007-01-23 00:00:00

  • Long-Term Survival and Freedom From Reintervention After Off-Pump Coronary Artery Bypass Grafting: A Propensity-Matched Study.

    abstract:BACKGROUND:The long-term outcomes of off-pump coronary artery bypass grafting (CABG) are the subject of speculation. Our institution has >15 years of experience performing CABG both off-pump (OPCAB) and on cardiopulmonary bypass (CPB). Our null hypothesis was that there would be no difference in a long-term composite o...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.116.021933

    authors: Kirmani BH,Holmes MV,Muir AD

    更新日期:2016-10-25 00:00:00

  • Genetic--epidemiologic study of early-onset ischemic heart disease.

    abstract::A genetic-epidemiologic study was undertaken of a white Colorado population of 207 patients who had a myocardial infarction before age 55 years. Nineteen independent variables were compared between the 207 cases and 621 controls, matched 3:1. The highest risk ratios were associated with a positive family history for i...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/01.cir.61.3.503

    authors: Nora JJ,Lortscher RH,Spangler RD,Nora AH,Kimberling WJ

    更新日期:1980-03-01 00:00:00

  • Practice standards for electrocardiographic monitoring in hospital settings: an American Heart Association scientific statement from the Councils on Cardiovascular Nursing, Clinical Cardiology, and Cardiovascular Disease in the Young: endorsed by the Inte

    abstract::The goals of electrocardiographic (ECG) monitoring in hospital settings have expanded from simple heart rate and basic rhythm determination to the diagnosis of complex arrhythmias, myocardial ischemia, and prolonged QT interval. Whereas computerized arrhythmia analysis is automatic in cardiac monitoring systems, compu...

    journal_title:Circulation

    pub_type: 指南,杂志文章,实务指引

    doi:10.1161/01.CIR.0000145144.56673.59

    authors: Drew BJ,Califf RM,Funk M,Kaufman ES,Krucoff MW,Laks MM,Macfarlane PW,Sommargren C,Swiryn S,Van Hare GF,American Heart Association.,Councils on Cardiovascular Nursing, Clinical Cardiology, and Cardiovascular Disease in the Young.

    更新日期:2004-10-26 00:00:00

  • Sirt7 Contributes to Myocardial Tissue Repair by Maintaining Transforming Growth Factor-β Signaling Pathway.

    abstract:BACKGROUND:Sirt7, 1 of the 7 members of the mammalian sirtuin family, promotes oncogenic transformation. Tumor growth and metastasis require fibrotic and angiogenic responses. Here, we investigated the role of Sirt7 in cardiovascular tissue repair process. METHODS AND RESULTS:In wild-type mice, Sirt7 expression increa...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.114.014821

    authors: Araki S,Izumiya Y,Rokutanda T,Ianni A,Hanatani S,Kimura Y,Onoue Y,Senokuchi T,Yoshizawa T,Yasuda O,Koitabashi N,Kurabayashi M,Braun T,Bober E,Yamagata K,Ogawa H

    更新日期:2015-09-22 00:00:00

  • Use of a novel endoscopic catheter for direct visualization and ablation in an ovine model of chronic myocardial infarction.

    abstract:BACKGROUND:Defining the arrhythmogenic substrate is essential for successful ablation of scar-related ventricular tachycardia. The visual characteristics of endocardial ischemic scar have not been described in vivo. The goal of this study was (1) to quantify the visual characteristics of normal tissue, scar border zone...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.112.112540

    authors: Betensky BP,Jauregui M,Campos B,Michele J,Marchlinski FE,Oley L,Wylie B,Robinson D,Gerstenfeld EP

    更新日期:2012-10-23 00:00:00

  • A hemodynamically responsive antitachycardia system. Development and basis for design in humans.

    abstract::Current automatic implantable cardioverter-defibrillators detect tachyarrhythmias primarily by rate-only algorithms and cannot adequately distinguish hemodynamically stable from unstable tachyarrhythmias. The responses of right atrial (mean) and right ventricular pressures (mean, systolic, diastolic, and pulse) to 64 ...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/01.cir.82.2.394

    authors: Cohen TJ,Liem LB

    更新日期:1990-08-01 00:00:00

  • p27kip1-838C>A single nucleotide polymorphism is associated with restenosis risk after coronary stenting and modulates p27kip1 promoter activity.

    abstract:BACKGROUND:The cyclin-dependent kinase inhibitor p27(kip1) is a key regulator of smooth muscle cell and leukocyte proliferation in vascular disease, including in-stent restenosis. We therefore hypothesized that common genetic variations or single nucleotide polymorphisms in p27(kip1) may serve as a useful tool in risk ...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.108.842179

    authors: van Tiel CM,Bonta PI,Rittersma SZ,Beijk MA,Bradley EJ,Klous AM,Koch KT,Baas F,Jukema JW,Pons D,Sampietro ML,Pannekoek H,de Winter RJ,de Vries CJ

    更新日期:2009-08-25 00:00:00

  • Persistence of functional atrioventricular accessory pathways in postseptated embryonic avian hearts: implications for morphogenesis and functional maturation of the cardiac conduction system.

    abstract:BACKGROUND:During heart development, the ventricular activation sequence changes from a base-to-apex to an apex-to-base pattern. We investigated the possibility of impulse propagation through remnants of atrioventricular (AV) connections in quail hearts. METHODS AND RESULTS:In 86 hearts (group A, HH30-34, n=15; group ...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.106.658807

    authors: Kolditz DP,Wijffels MC,Blom NA,van der Laarse A,Markwald RR,Schalij MJ,Gittenberger-de Groot AC

    更新日期:2007-01-02 00:00:00

  • Use of Intravenous Recombinant Tissue Plasminogen Activator in Patients With Acute Ischemic Stroke Who Take Non-Vitamin K Antagonist Oral Anticoagulants Before Stroke.

    abstract:BACKGROUND:Intravenous rt-PA (recombinant tissue-type plasminogen activator) is effective in improving outcomes in ischemic stroke; however, there are few data on the use of rt-PA in patients who are receiving a non-vitamin K antagonist oral anticoagulant (NOAC). METHODS:Using data from the American Heart Association ...

    journal_title:Circulation

    pub_type: 杂志文章

    doi:10.1161/CIRCULATIONAHA.116.023940

    authors: Xian Y,Federspiel JJ,Hernandez AF,Laskowitz DT,Schwamm LH,Bhatt DL,Smith EE,Fonarow GC,Peterson ED

    更新日期:2017-03-14 00:00:00