Abstract：
:With a research hypothesis that the behavior of blood perfused hearts was different from that of crystalloid perfused hearts, we tested the null hypothesis that the functional and metabolic status of blood-perfused (paracorporeal oxygenation) and Krebs-Henseleit (bubble oxygenation) perfused Langendorff isolated rat hearts is the same before, during and after global myocardial ischemia. Thirty isolated rat hearts were studied under identical conditions except that in equal numbers they were randomly assigned to either blood or crystalloid perfusion. In the blood perfused and crystalloid perfused hearts subjected to 22 min of normothermic ischemia and 30 min of reperfusion, mean systolic recovery was 72 +/- 3.9% (S.E.) and 20 +/- 10% (P = 0.001), respectively; coronary resistance increased 21 +/- 16% and 158 +/- 27% (P = 0.0003) (unadjusted for viscosity); mean water content after reperfusion was 82.0 +/- 0.43% and 86.7 +/- 0.42% (P < 0.0001), ATP content was 8.4 +/- 1.9 and 4.3 +/- 0.5 mumol/g dry wt (P = 0.08), and energy charge was 0.74 +/- 0.114 and 0.59 +/- 0.048 (P = 0.3). A major qualitative difference during reperfusion was spontaneous relaxation of contracture and rapid resumption of sinus rhythm in blood perfused hearts, in contrast to continued contracture and rise in intraventricular pressure in 9 of 10 crystalloid perfused hearts. One crystalloid perfused heart did not develop contracture, and its phenomena during reperfusion were similar to those of blood perfused hearts. The data support the research hypothesis, and suggest caution in extrapolating to blood perfused systems inferences from crystalloid perfused models. Better preservation of reactive hyperemia early in reperfusion may explain the better performance of blood perfused hearts.
journal_name
J Mol Cell Cardioljournal_title
Journal of molecular and cellular cardiologyauthors
Walters HL 3rd,Digerness SB,Naftel DC,Waggoner JR 3rd,Blackstone EH,Kirklin JWdoi
10.1016/0022-2828(92)93172-gkeywords:
subject
Has Abstractpub_date
1992-10-01 00:00:00pages
1063-77issue
10eissn
0022-2828issn
1095-8584pii
0022-2828(92)93172-Gjournal_volume
24pub_type
杂志文章abstract：:Ischemic preconditioning reduces infarct size and improves cardiac function in various species, including mice. The mechanism for ischemic preconditioning protection is not entirely clear and activation of alpha(1B)-adrenergic receptors (AR) is believed to be involved. Transgenic mice expressing constitutively active ...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.2000.1201
更新日期：2000-09-01 00:00:00
abstract：:Pacemaker (HCN) channels have a key role in the generation and modulation of spontaneous activity of sinoatrial node myocytes. Previous work has shown that compartmentation of HCN4 pacemaker channels within caveolae regulates important functions, but the molecular mechanism responsible is still unknown. HCN channels h...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2012.05.013
更新日期：2012-08-01 00:00:00
abstract：:Aquaporins (AQPs) are a family of water channel proteins that assist in maintenance of the cellular osmotic environment and whole body fluid balance. Specialized organ-specific AQPs are important in physiologic and pathologic processes but little is known about AQPs in the human heart. AQP1 has been identified in rode...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2004.01.009
更新日期：2004-05-01 00:00:00
abstract：:Angiotensin (Ang) II plays an important role in post-myocardial infarction (MI) cardiac remodeling. The Ang II type 1 (AT(1)) receptor which mediates most Ang II effects is upregulated on non-myocytes in the post-MI heart. We have shown that pro-inflammatory cytokines increase AT(1) receptor density on cardiac fibrobl...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2004.12.015
更新日期：2005-03-01 00:00:00
abstract：:Human hearts with idiopathic dilated cardiomyopathy have diminished adenylate cyclase activity and increased amounts of the alpha-subunit of the inhibitory guanine nucleotide-binding regulatory protein (alpha Gi) as measured by pertussis toxin catalyzed ADP-ribosylation. We utilized specific antisera against synthetic...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/0022-2828(91)90168-l
更新日期：1991-04-01 00:00:00
abstract：:Interactions between platelets with injured vascular endothelium contribute to thrombotic occlusion. A murine monoclonal antibody [7E3 F(ab')2] to the platelet GPIIb/IIIa receptor complex was used to inhibit platelet aggregation in an experimental model of coronary artery thrombosis. Prevention of thrombotic occlusion...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/0022-2828(89)90650-0
更新日期：1989-04-01 00:00:00
abstract：:Heart failure patients have abnormal cardiac high energy phosphate metabolism, the explanation for which is unknown. Patients with heart failure also have elevated plasma free fatty acid (FFA) concentrations. Elevated FFA levels are associated with increased cardiac mitochondrial uncoupling proteins (UCPs), which, in ...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2008.01.008
更新日期：2008-04-01 00:00:00
abstract：:Monoclonal and polyclonal antibodies to the major sarcoplasmic reticulum proteins of rabbit skeletal and canine cardiac muscle have been used to identify and characterize the corresponding components of human cardiac sarcoplasmic reticulum. The Ca2(+)-transporting ATPase of human cardiac sarcoplasmic reticulum was ide...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/0022-2828(90)90990-j
更新日期：1990-12-01 00:00:00
abstract：:Ischemic tolerance decreases with aging and the cardioprotective effect of ischemic preconditioning (IPC) is impaired in aged animals. Although lifelong caloric restriction (CR) profoundly affects the physiological and pathophysiological modifications induced by aging and markedly increases life span in several specie...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2005.03.010
更新日期：2005-08-01 00:00:00
abstract：:The p66shc adaptor protein mediates age-associated oxidative stress. We examined the role of p66shc in endothelial nitric oxide synthase (eNOS) signaling. Overexpression of p66shc inhibited eNOS-dependent NO production. RNAi-mediated down-regulation of endogenous p66shc led to activation of the proto-oncogene ras, and...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2005.09.003
更新日期：2005-12-01 00:00:00
abstract：:The two-pore domain potassium (K(+)) channel TWIK-1 (or K2P1.1) contributes to background K(+) conductance in diverse cell types. TWIK-1, encoded by the KCNK1 gene, is present in the human heart with robust expression in the atria, however its physiological significance is unknown. To evaluate the cardiac effects of T...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2016.04.006
更新日期：2016-08-01 00:00:00
abstract：:Mitochondrial adenine nucleotide translocase (ANT) is a specific target for the autoantibody response in idiopathic dilated cardiomyopathy (IDCM). We have undertaken an epitope analysis of ANT in IDCM by immunoblot with recombinant GST-ANT fusion proteins and with cellulose-bound decapeptides of human ANT1. Forty-five...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.2002.1538
更新日期：2002-05-01 00:00:00
abstract：:The adult newt cardiac ventricular myocyte has been successfully placed in cell culture and has been shown to undergo in vitro DNA synthesis. Although several growth factors have been reported to increase DNA synthesis in cardiac myocytes in vitro, PDGF has not been reported to do so, but has been shown to be active i...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/0022-2828(92)91870-b
更新日期：1992-09-01 00:00:00
abstract：:Although several studies have demonstrated that nitric oxide appears to be cardioprotective and endothelin-1 (ET-1) deleterious in myocardial ischemia/reperfusion injury, their interactions in the intact heart are unknown. Therefore, coronary effluent and interstitial fluid ("transudate") levels of ET-1 and cyclic GMP...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.1997.0470
更新日期：1997-09-01 00:00:00
abstract：:Cardiac hypertrophy is a leading cause of serious heart diseases. Although many signaling molecules are involved in hypertrophy, the functions of some proteins in this process are still unknown. Calcineurin B homologous protein 3 (CHP3)/tescalcin is an EF-hand Ca(2+)-binding protein that is abundantly expressed in the...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2015.04.018
更新日期：2015-07-01 00:00:00
abstract：:Recovery of intracellular Ca transients and fractional shortening during late phase acidosis are suggested to be associated with CaMKII-dependent processes of which phospholamban (PLB) phosphorylation may play an important role. To test whether increased expression levels of CaMKII may further enhance recovery, we inv...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2007.09.008
更新日期：2007-12-01 00:00:00
abstract：:Titin is a very large alternatively spliced protein that performs multiple functions in heart and skeletal muscles. A rat strain is described with an autosomal dominant mutation that alters the isoform expression of titin. While wild type animals go through a developmental program where the 3.0 MDa N2B becomes the maj...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2008.02.272
更新日期：2008-06-01 00:00:00
abstract：:Basal levels of cyclic adenosine monophosphate (cAMP) were measured in embryonic chick hearts at various times during development. Basal cAMP was highest on incubation day 5 and decreased throughout the remaining incubation period. Cyclic AMP could not be stimulated above basal level by intravenous in ovo administrati...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/s0022-2828(86)80957-9
更新日期：1986-08-01 00:00:00
abstract：:The cardiac renin-angiotensin system (RAS) has been implicated in mediating myocyte hypertrophy, remodeling, and fibroblast proliferation in the hemodynamically overloaded heart. However, the intracellular signaling mechanisms responsible for regulation of angiotensinogen (Ao), a substrate of the RAS system, are large...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2008.09.121
更新日期：2008-12-01 00:00:00
abstract：:Chemokines are small molecular weight proteins that play important roles in inflammation. Originally described as chemotactic cytokines, chemokines stimulate the influx of leukocytes into specific tissue compartments. These molecules also modulate gene expression in both infiltrating and resident cells to mediate a va...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.2001.1503
更新日期：2002-02-01 00:00:00
abstract：:We evaluated the hypothesis that uterine cells home to the heart after injury and improve cardiac outcomes. Premenopausal women have fewer cardiovascular complications than age-matched men, but the mechanisms responsible for this protection have not been conclusively identified. Hysterectomy was performed in young fem...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2012.03.002
更新日期：2012-06-01 00:00:00
abstract：:To test the hypothesis that alterations in adrenergic or cholinergic receptors occur in response to physical training, and that changes in receptor properties could be mechanistically important in producting the altered cardiovascular physiology of the trained state, we studied the effects of endurance training by swi...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/s0022-2828(84)80611-2
更新日期：1984-05-01 00:00:00
abstract：:The interaction of verapamil and other phenylalkylamine calcium channel blockers with the 1,4-dihydropyridine receptor was examined. Studies characterizing the interaction and relationship between calcium channel blocking potency and binding affinity were performed in rat myocardium. The 1,4-dihydropyridines, nifedipi...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/s0022-2828(86)80010-4
更新日期：1986-09-01 00:00:00
abstract：:We have tested the hypothesis that thyroid state may influence both the flow of cellular Ca2+ and the myofilament response to Ca2+ by effects on intracellular pH (pHi) and Na+ (Nai+). Single cardiac myocytes isolated from hypothyroid, euthyroid and hyperthyroid animals were loaded with fura-2/AM (Cai2+ probe), BCECF/A...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.1997.0495
更新日期：1997-10-01 00:00:00
abstract：:Free radicals and lipid peroxides have recently been identified by us [1, 2, 3] as metabolic intermediates during acute myocardial ischemia. The mechanisms by which evolving myocardial ischemia initiates free radical production are not clear. Based on studies in vitro, it is feasible to consider the following possibil...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/0022-2828(83)90260-2
更新日期：1983-10-01 00:00:00
abstract：:The polyunsaturated fatty acids (PUFAs) of the omega 3 series are known to modulate adrenergic functions in ventricular myocytes. This study evaluated the influence of hypoxia duration and PUFA composition on the ability of cultured rat cardiomyocytes in producing alpha- and beta-adrenergic messengers (IPs and cAMP). ...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.1998.0871
更新日期：1999-02-01 00:00:00
abstract：:The lack of pathological consequences of cardiac ATP-sensitive potassium channel (K(ATP)) channel gene manipulation is in stark contrast to the effect of similar perturbations in the pancreatic beta-cell. Because the pancreatic and cardiac channel share the same pore-forming subunit (Kir6.2), the different effects of ...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2005.06.003
更新日期：2005-10-01 00:00:00
abstract：:A dose-response study concerning the importance of the flow rate (0.5 to 12 ml/min) and volume (2.5 to 60 ml) of calcium-free coronary perfusion (duration 5 min) in the induction of a calcium paradox on reperfusion (duration 15 min) with calcium-containing medium has been performed in the isolated rat heart (37 degree...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/s0022-2828(85)80076-6
更新日期：1985-10-01 00:00:00
abstract：:Cell-based therapy after myocardial infarction (MI) is a promising therapeutic option but the relevant cell subsets and dosage requirements are poorly defined. We hypothesized that cell therapy for myocardial infarction is improved by ex vivo expansion and high-dose transplantation of defined hematopoietic progenitor ...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2008.06.010
更新日期：2008-09-01 00:00:00
abstract：:The mechanism by which Na+-H+ exchange (NHE) inhibition results in attenuation and reversal of postinfarction remodelling and heart failure remains controversial. In this study, we investigated the possible contribution of mitochondrial involvement by determining the effect of the NHE-1-specific inhibitor EMD-87580 (E...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2004.10.007
更新日期：2005-01-01 00:00:00
