Abstract：
:The ability of the beta-receptor antagonist propranolol to influence the response of isolated cardiac and vascular smooth muscle to several classes of calcium channel blockers was examined. For comparison, the interactions between propranolol and other classes of negative inotropic and vasorelaxant agents was also evaluated. The results of these studies demonstrate that propranolol pre-treatment significantly enhances the in vitro response to the dihydropyridine calcium channel blocker nifedipine, but not the thiazapine calcium channel blocker diltiazem. This enhancement was unrelated to the negative inotropic or vasorelaxant properties of these agents. In addition, propranolol pre-treatment of rat cortical membranes also enhanced the affinity of nifedipine for the 3H-nitrendipine binding site, but did not alter the effect of diltiazem on 3H-nitrendipine binding. These observations suggest that a direct interaction may exist between beta-receptor antagonists and dihydropyrine-type calcium channel blockers. This interaction may be an important factor in selecting drug therapy for conditions such as hypertension and angina.
journal_name
J Mol Cell Cardioljournal_title
Journal of molecular and cellular cardiologyauthors
Weishaar RE,Quade MM,Pugsley TA,Shih YH,Taylor DG Jrdoi
10.1016/s0022-2828(88)80144-5subject
Has Abstractpub_date
1988-10-01 00:00:00pages
897-903issue
10eissn
0022-2828issn
1095-8584journal_volume
20pub_type
杂志文章abstract：:Fibroblast growth factor-2 (FGF-2), administered to the isolated rat heart by perfusion and under constant pressure, is protective against ischemia-reperfusion (I-R). Here we have investigated whether FGF-2 cardioprotection: (a) is dependent on flow modulation; (b) is linked to effects on contractility; (c) is mediate...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.1998.0832
更新日期：1998-12-01 00:00:00
abstract：:Cardioprotection and preconditioning mediated via G-protein-coupled receptors may be lost or impaired with advancing age, limiting ischemic tolerance and the ability to pharmacologically protect older hearts from ischemic injury. Our preliminary findings indicated a loss of delta-opioid receptor-mediated protection in...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2007.02.011
更新日期：2007-05-01 00:00:00
abstract：:Oxygen deprivation for prolonged periods leads to cardiac cell death and ventricular dysfunction. The ability to prevent myocardial cell death would be of significant therapeutic value in maintaining cardiac function after injury. While caspases have been suggested to play a critical role in apoptosis, their involveme...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.1999.1057
更新日期：2000-01-01 00:00:00
abstract：:Introduced several decades ago, the dogma persists that ventricular myocytes are terminally differentiated cells and cardiac repair by myocyte regeneration is completely inhibited shortly after birth. On the basis that cardiac myocytes are unable to divide in the adult heart, myocyte growth under physiologic and patho...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章,评审
doi：10.1006/jmcc.2001.1506
更新日期：2002-02-01 00:00:00
abstract：:Diabetic cardiomyopathy is responsible for substantial morbidity and mortality in the diabetic population. Increased oxidative stress has been associated with the pathogenesis of chronic diabetic complications including cardiomyopathy. Multiple biochemical mechanisms have been proposed to increase oxidative stress in ...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2003.09.007
更新日期：2003-12-01 00:00:00
abstract：BACKGROUND:Right ventricular failure (RVF) due to pressure load is a major cause of death in congenital heart diseases and pulmonary hypertension. The mechanisms of RVF are unknown. We used an experimental approach based upon clinical signs of RVF to delineate functional and biological processes associated with RVF. M...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2014.11.024
更新日期：2015-02-01 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：:This study addressed the question whether the molecular mass of proteins influences their release from isolated rat neonatal cardiomyocytes subjected to simulated ischemia (SI) or metabolic inhibition (MI). During these interventions cellular ATP content and the relative releases of several proteins, ranging in molecu...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.1996.0133
更新日期：1996-07-01 00:00:00
abstract：:Atrial fibrillation (AF) causes myocyte stress by inducing structural changes, predominantly myolysis, which is related to the progression of AF. As heat shock proteins (Hsp) protect against cellular stress, their efficacy in preventing myolysis was investigated in a tachy-paced cell model for AF and in patients with ...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2006.06.068
更新日期：2006-09-01 00:00:00
abstract：:This study describes the effect of oxygen radicals on the ultrastructure of the isolated Langendorff-perfused rat heart. Oxygen radicals were enzymatically generated by xanthine oxidase (0.025 U/ml) and hypoxanthine (0.96 mM). Hearts were perfusion-fixed for electron microscopy and stereological technique was performe...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/s0022-2828(87)80583-7
更新日期：1987-04-01 00:00:00
abstract：:The authors have shown that stimulation of cardiac alpha 1-adrenoceptors confers immediate cardioprotection in the isolated rat heart against post-ischemic dysfunction, and have recently demonstrated that in vivo treatment of rats with norepinephrine (NE) induces cardiac heat shock protein 72 and myocardial adaptation...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.1996.0194
更新日期：1996-09-01 00:00:00
abstract：:The leading cause of genetic dilated cardiomyopathy (DCM) is due to mutations in the TTN gene, impacting approximately 15-20% of familial and 18% of sporadic DCM cases. Currently, there is potential for a personalized RNA-based therapeutic approach in titin-based DCM, utilizing antisense oligonucleotide (AON) mediated...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2019.04.014
更新日期：2019-06-01 00:00:00
abstract：:Cardiac troponin I (cTnI), the inhibitory-unit, and cardiac troponin T (cTnT), the tropomyosin-binding unit together with the Ca-binding unit (cTnC) of the hetero-trimeric troponin complex signal activation of the sarcomeres of the adult cardiac myocyte. The unique structure and heart myocyte restricted expression of ...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章,评审
doi：10.1016/j.yjmcc.2020.05.010
更新日期：2020-06-01 00:00:00
abstract：:The objective of this study was to characterize the effect of prostacyclin (PGI2) on ventricular function following total global ischemia in isolated working rat hearts and to investigate the mechanism of its action. Ischemia was initiated for 10, 15, 20 or 25 min with or without treatment with PGI2. Increasing durati...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/0022-2828(89)90749-9
更新日期：1989-03-01 00:00:00
abstract：:Tetrahydrobiopterin (BH(4)) is an essential cofactor for aromatic amino acid hydroxylases and for all three nitric oxide synthase (NOS) isoforms. It also has a protective role in the cell as an antioxidant and scavenger of reactive nitrogen and oxygen species. Experimental studies in humans and animals demonstrate tha...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章,评审
doi：10.1016/j.yjmcc.2011.03.009
更新日期：2011-10-01 00:00:00
abstract：:The aim was to determine whether adaptation to chronic hypoxia protects the heart against ischemic arrhythmias and whether ATP-dependent potassium channels (K(ATP)) play a role in the antiarrhythmic mechanism. Adult male rats were adapted to intermittent high altitude hypoxia (5000 m, 4 h/day) and susceptibility to is...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.1999.1013
更新日期：1999-10-01 00:00:00
abstract：:The processes of excitation-contraction coupling in cardiac myocytes require enormous amounts of energy in the form of ATP, which is produced by oxidative phosphorylation in mitochondria. Due to the constantly varying workloads of the heart, efficient matching of energy supply to demand is a requisite for proper heart...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章,评审
doi：10.1016/j.yjmcc.2012.07.015
更新日期：2013-02-01 00:00:00
abstract：:This study examined the hypothesis that the prediabetic metabolic syndrome alters expression, phosphorylation state and binding affinity of cardiac RyR2. Real-time PCR and Western blot analysis were used to assess mRNA and protein expression in the left ventricle, right ventricle and right atrium from control (n=5) an...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2006.04.018
更新日期：2006-07-01 00:00:00
abstract：:Acquired cardiovascular diseases such as coronary heart disease, peripheral artery disease and related vascular problems contribute to more than one-third of worldwide morbidity and mortality. In many instances, particularly in the under developed world, cardiovascular diseases are diagnosed at a late stage limiting t...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章,评审
doi：10.1016/j.yjmcc.2011.06.002
更新日期：2011-09-01 00:00:00
abstract：:The mechanisms responsible for myocardial dysfunction in the setting of sepsis remain undefined. Fas ligation with its cognate ligand (FasL) induces apoptosis and activates cellular inflammatory responses associated with tissue injury. We determined whether interruption of Fas/FasL interaction by cardiac-specific expr...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2007.09.016
更新日期：2008-01-01 00:00:00
abstract：:An efficient cardiac gene transfer technique in murine models would greatly facilitate the elucidation of the pathophysiology of cardiomyopathies and the development of genetic therapies. Direct myocardial injection or catheter-based intracoronary infusion is not easily achievable in mice and resultant transgene expre...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1006/jmcc.1998.0905
更新日期：1999-04-01 00:00:00
abstract：:Atrial fibrillation, the most common sustained arrhythmia, is believed to be triggered by ectopic electrical activity originating in the myocardial sleeves surrounding the pulmonary veins (PVs). It has been reported that myocardial sleeves have the potential to generate automaticity in response to norepinephrine. This...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2012.01.007
更新日期：2012-05-01 00:00:00
abstract：:Preconditioning of hearts with the α(1)-adrenoceptor agonist phenylephrine decreases infarct size and increases the functional recovery of the heart following ischaemia-reperfusion. However, the cellular mechanisms responsible for this protection are not known. We investigated the role of protein kinase C ε and δ (PKC...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2011.06.015
更新日期：2011-09-01 00:00:00
abstract：:The ability of cells in anoxic-perfused hearts to withstand two types of physical stresses (stretching and swelling), in the absence of reoxygenation was determined. Isolated rat hearts were perfused for 20, 40, or 60 mins with anoxic buffer after which hearts were either reoxygenated for 20 mins or exposed for 15 s t...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/s0022-2828(87)80353-x
更新日期：1987-11-01 00:00:00
abstract：:Reoxygenation of isolated rat cardiac myocytes following a period of hypoxia and substrate deprivation resulted in a 1.5-2-fold increase in the total Ca2+ content which could be inhibited by 1 microM antimycin A or ruthenium red (50% inhibition at 2.5 microM). This increase in Ca2+ content was not accompanied by any r...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/0022-2828(89)90795-5
更新日期：1989-10-01 00:00:00
abstract：:Caloric restriction extends longevity and reduces the onset of chronic disease in many animal models. Recently, caloric restriction was shown in humans to be associated with lower blood pressure, decreased systemic inflammation, and improved cardiac diastolic parameters. However, the causation and mechanisms of calori...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2006.07.012
更新日期：2006-10-01 00:00:00
abstract：AIMS:During embryogenesis, the onset of circulatory blood flow generates a variety of hemodynamic forces which reciprocally induce changes in cardiovascular development and performance. It has been known for some time that these forces can be detected by as yet unknown mechanosensory systems which in turn promote cardi...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2020.03.013
更新日期：2020-06-01 00:00:00
abstract：BACKGROUNDS:Low serum cholesterol levels are associated with cardiac arrhythmias and poor prognosis in patients with chronic heart failure. However, the underlying mechanisms by which decreases in cholesterol content lead to cardiac dysfunction remain unclear. Multiple studies have implicated damage to cardiac transver...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2016.05.013
更新日期：2016-08-01 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：:Brugada syndrome predisposes to sudden death due to disruption of normal cardiac ion channel function, yet our understanding of the underlying cellular mechanisms is incomplete. Commonly used heterologous expression models lack many characteristics of native cardiomyocytes and, in particular, the individual genetic ba...
journal_title：Journal of molecular and cellular cardiology
pub_type： 杂志文章
doi：10.1016/j.yjmcc.2017.10.002
更新日期：2018-01-01 00:00:00
