Abstract:
:The dihydropyridine calcium channel blocking agent amlodipine is an effective anti-hypertensive agent and its use (in doses of 5 or 10 mg/day/kg body weight) was investigated in male Wistar rats with hypertension induced by aortic constriction. Controls were sham-operated and pair-fed. At the end of the study, rates of protein synthesis were measured with radiolabelled phenylalanine to calculate fractional rates of protein synthesis (ks), absolute rates of protein synthesis (Vs) and synthesis rates relative to RNA (kRNA). After 30 days of aortic constriction, weights of the left ventricle and left atrium were significantly increased by hypertension. The weights of the right ventricle and right atrium were relatively unaffected. Hypertension was accompanied by significant increases in the protein and RNA contents of the left ventricle and left atrium. The contractile and non-contractile protein contents were also increased in the left ventricles of hypertensive rats as were total proteins and total RNA. In the myofibrillary fraction, ks decreased. The right ventricle and right atrium were generally unaffected except for a decline in mixed protein ks. Many of these changes in hypertension were ameliorated by treatment with amlodipine, particularly at the higher dose (i.e. 10 mg/kg body weight/day) implicating an effect on protein metabolism. In the left ventricle these included amelioration of the increases in mixed and contractile proteins, total RNA contents, mixed Vs and Vs for sarcoplasmic and stromal proteins. The ameliorating effects of amlodipine were moderate in the left atrium. Furthermore, amlodipine also retarded the hypertension-induced reduction in right ventricule rates of protein synthesis. Although the preceding study emphasises the preventative aspects of amlodipine's efficacy, an additional study was carried out in SHR rats to ascertain the applicability for regression per se. Amlodipine (10 mg/kg/body weight) therapy for 30 weeks caused regression of LV mass, total protein, RNA and DNA contents. We conclude that amlodipine, is an efficient agent in ameliorating the hypertension-induced changes in protein metabolism in an aortic constriction model.
journal_name
Int J Cardioljournal_title
International journal of cardiologyauthors
Patel VB,Siddiq T,Sherwood R,Richardson PJ,Preedy VRdoi
10.1016/s0167-5273(96)02872-0subject
Has Abstractpub_date
1997-02-01 00:00:00pages
241-55issue
3eissn
0167-5273issn
1874-1754pii
S0167-5273(96)02872-0journal_volume
58pub_type
杂志文章abstract:AIMS:To compare the effect of low (0.3 mg) and commonly prescribed (0.625 mg) doses of conjugated equine estrogens (CEE) on brachial artery flow-mediated dilation and lipid profiles. METHODS AND RESULTS:Twenty-five postmenopausal women (mean age, 65+/-6 years) at risk for coronary artery disease (CAD) (> or =2 establi...
journal_title:International journal of cardiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0167-5273(02)00505-3
更新日期:2003-06-01 00:00:00
abstract::Tachycardias mediated by atrioventricular accessory pathways, which are refractory to antiarrhythmic drug therapy have been treated both by surgery and by catheter ablation with high energy direct current shock. These procedures have variable success rates and substantial associated morbidity and mortality. Radiofrequ...
journal_title:International journal of cardiology
pub_type: 临床试验,杂志文章
doi:10.1016/0167-5273(93)90085-u
更新日期:1993-12-15 00:00:00
abstract:AIMS:This study aimed to review the effectiveness of oral health promotion activities conducted among patients with cardiovascular disease. METHODS AND RESULTS:Three electronic databases were searched for effective papers using standardized search methods, and key findings of effective studies were summarized. The ini...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2010.11.014
更新日期:2011-09-15 00:00:00
abstract:BACKGROUND:β1-adrenoceptors (β1-ARs) are the predominant receptors in regulating heart functions. β1-ARs contain 7-transmembrane domains (7TM), 3 extracellular loops and 3 intracellular loops. Among these loops, the second extracellular loop of β1-AR (β1-AR-ECII) plays an important role in the pathogenesis of heart fai...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2009.12.023
更新日期:2011-05-19 00:00:00
abstract:PURPOSE:Severe valve lesions require corrective interventions to avoid progression to heart failure (HF) and premature demise. We tested the hypothesis that despite operative risks, corrective valvular interventions will lead to significant improvements in overall cardiac pump function, especially before the onset of c...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2015.03.177
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:To provide confirmatory evidence that the accuracy of MSCT coronary angiography is comparable to that of conventional coronary angiography. METHOD:19 patients who had both MSCT and conventional coronary angiography were included in our study. The mean age of our patients was 62.3 (SD 7.7) and 42% of our pat...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2006.08.057
更新日期:2007-09-14 00:00:00
abstract:BACKGROUND:Coronary artery spasm (CAS) is known to be a risk factor of acute coronary syndrome and angina pectoris. However, there is no currently available data with larger study population regarding long-term clinical outcomes of CAS in real world clinical practice. OBJECTIVES:We evaluated the prevalence of CAS and ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2015.02.021
更新日期:2015-04-01 00:00:00
abstract::Calcium channel blockers, as glucocorticoids, may impair generation of NO in vivo, because of urinary nitrates deficit in spite of nitrated derivatives treatment in ischaemic heart disease patients. ...
journal_title:International journal of cardiology
pub_type: 临床试验,评论,信件
doi:10.1016/s0167-5273(97)00204-0
更新日期:1997-11-20 00:00:00
abstract:OBJECTIVE:The aim of this study was to investigate gender related differences in the management and risk factor control of patients with coronary heart disease (CHD), taking into account their age and educational level. METHODS:Analyses are based on the EUROASPIRE IV (EUROpean Action on Secondary and Primary Preventio...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2016.02.015
更新日期:2016-04-15 00:00:00
abstract::Chorea is a rare complication of major cardiac surgery, which has been related to profound hypothermia and circulatory arrest. We describe a case of choreic syndrome in a child which followed normothermic cardiac bypass and only became apparent clinically when the child was treated with captopril. ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(91)90104-w
更新日期:1991-02-01 00:00:00
abstract:OBJECTIVES:Recent data indicate that hypertension is not well controlled in many populations throughout the world. The factors that influence individual response to anti-hypertensive treatment need to be clarified. Pulse wave velocity (PWV), as a marker of arterial stiffness, has been demonstrated to have important rel...
journal_title:International journal of cardiology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.ijcard.2014.10.049
更新日期:2015-01-15 00:00:00
abstract::There is some evidence that Covid 19 pneumonia is associated with prothrombotic status and increased risk of venous thromboembolic events (deep venous thrombosis and pulmonary embolism). Over a two-week period we admitted in our Unit 25 patients with Covid-19 pneumonia, of these pulmonary embolism was diagnosed using ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2020.04.028
更新日期:2020-08-15 00:00:00
abstract:BACKGROUND:The use of temporary mechanical circulatory support (tMCS) during arrhythmia is increasing, although available evidence for this indication is limited, with significant gaps of knowledge regarding appropriate timing, management and configuration. This systematic review sought to analyze the use of tMCS in pa...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2020.03.045
更新日期:2020-06-01 00:00:00
abstract:BACKGROUND:Myeloid differentiation factor-2 (MD-2) has been shown to be an important modulator of the innate immune system, but its role in cardiac diseases is unknown. We investigated whether MD-2 plays a role as risk predictor and contributor in dilated cardiomyopathy (DCM). METHODS AND RESULTS:We included 174 patie...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2018.06.025
更新日期:2018-11-01 00:00:00
abstract:BACKGROUND:The associations between autonomic function and biventricular function in patients with the indeterminate form of Chagas disease remains to be elucidated. METHODS:In 42 asymptomatic patients and 19 healthy volunteers, the autonomic function was assessed by time domain indices of heart rate variability (HRV)...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2005.11.010
更新日期:2006-11-10 00:00:00
abstract:BACKGROUND:Dilated cardiomyopathy (DCM) incidence during and after anthracycline therapy is highly dependent on anthracycline cumulative dose (CD), but its detailed risk factors remained unexplored. Our aim was to assess heart failure (HF) incidence after epirubicin therapy and construct a HF risk-prediction score. ME...
journal_title:International journal of cardiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ijcard.2019.03.013
更新日期:2019-06-15 00:00:00
abstract:BACKGROUND:The short-term effects of early statin therapy in acute coronary syndromes (ACS) on clinical outcomes remain unclear. Our objective was to update the evidence on patient relevant outcomes from all randomized trials comparing early statin therapy with placebo or usual care at 1 and 4 months following ACS. ME...
journal_title:International journal of cardiology
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.ijcard.2011.01.033
更新日期:2012-06-28 00:00:00
abstract::We tested the hypothesis of anaphylaxis as a pathogenic factor in acute myocardial infarction. Mast cells were counted in the myocardium, coronary arteries and airways. Total serum IgE, mast cell tryptase, complements C3, C4, and factor B, were measured in 29 cases of sudden death from coronary artery thrombosis and i...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(95)02448-6
更新日期:1995-11-10 00:00:00
abstract:INTRODUCTION:We aimed to study the prevalence and types of sleep apnea (SA) as well as their clinical characteristics in atrial fibrillation (AF) ablation candidates in Japan. METHODS:Before catheter ablation, 197 consecutive AF patients (age: 60 ± 9 years, body mass index; 25.0 ± 3.0) were evaluated with portable pol...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2018.01.103
更新日期:2018-06-01 00:00:00
abstract:BACKGROUND:In the magnetic resonance T1-weighted imaging, some investigators have shown that coronary artery high-intensity signals (HISs) are associated with vulnerable plaque morphology and an increased risk of future cardiac events. Although previous studies used different PMR (the ratio between the signal intensiti...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2016.12.028
更新日期:2017-03-15 00:00:00
abstract:BACKGROUND:The interaction of left ventricular outflow tract (LVOT) and transcatheter heart valve (THV) is complex and may be device design specific. We sought to study LVOT characteristics and its relation with permanent pacemaker implantation (PPI) after transcatheter aortic valve replacement (TAVR). METHODS:We stud...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2016.04.023
更新日期:2016-08-01 00:00:00
abstract:BACKGROUND:Clinical impact of the minimally invasive surgical mitral valve annuloplasty (MVA) of functional mitral regurgitation (FMR) in systolic heart failure on top of the state-of-the-art standards of care remains controversial. Therefore, we aimed to compare clinical outcomes of isolated MVA using the mini-invasiv...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2017.06.029
更新日期:2017-10-01 00:00:00
abstract:BACKGROUND:Recent studies showed that J-waves are associated with vulnerability to ventricular fibrillation. Recently we reported the association between false tendons (FTs) and J-waves in a retrospective study. METHODS AND RESULTS:We prospectively studied 50 young healthy men (mean age 24.6±2.7 years). FTs were detec...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2014.01.101
更新日期:2014-03-15 00:00:00
abstract:BACKGROUND:AV delay optimisation of biventricular pacing devices (cardiac resynchronisation therapy, CRT) is performed in trials and recommended by current guidelines. The Doppler echocardiographic iterative method is the most commonly recommended. Yet whether it can be executed reliably has never been tested formally....
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2012.09.097
更新日期:2013-09-20 00:00:00
abstract:BACKGROUND:Myotonic dystrophy is associated with arrhythmias and risk of sudden death but also with symptoms of heart failure. Our study aimed to identify early biventricular dysfunction in asymptomatic patients with myotonic dystrophy by tissue Doppler. METHODS:Thirty-six patients with myotonic dystrophy (M/F=20/16, ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2006.06.056
更新日期:2007-05-31 00:00:00
abstract:BACKGROUND:The independent effects of numerous circulating inflammatory cytokines and inflammatory associated blood cells on reendothelialization and restenosis after PCI has been elucidated, whereas the blood circulation's general effect on restenosis is still pending. Thereby, author investigated the impact of blood ...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2007.05.116
更新日期:2008-08-18 00:00:00
abstract::Carlos Chagas, the discoverer of Chagas' disease was nominated to the Nobel Prize in 1921, but none did win the prize in that year. As a leader of a young scientist team, he discovered all aspects of the new disease from 1909 to 1920. It is still obscure why he did not win the Nobel Prize in 1921. Chagas was discarded...
journal_title:International journal of cardiology
pub_type: 传,历史文章,杂志文章
doi:10.1016/j.ijcard.2013.08.137
更新日期:2013-11-20 00:00:00
abstract::Specific molecules including inflammatory cell adhesion molecules mediate attachment of blood leukocyte and platelets to the endothelium and mononuclear cell migration into the arterial intima. However, the clinical significance of soluble cell adhesion molecules very early in the course of acute coronary syndrome is ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/s0167-5273(02)00564-8
更新日期:2003-08-01 00:00:00
abstract::Takayasu's disease is an unusual arteritis that affects young females. Stroke is a common presenting symptom usually due to sudden occlusion of one or more thoracic aortic arch arteries. The author recommends prophylactic bypass of involved aortic arch arteries to prevent strokes. Abdominal aortic involvement causes s...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/s0167-5273(00)00179-0
更新日期:2000-08-31 00:00:00
abstract:BACKGROUND:The trends in the IHD mortality rates vary widely across countries, reflecting the heterogeneity in the variation of the exposure to the main risk factors and in the access to different management strategies among settings. We aimed to identify model-based patterns in the time trends in IHD mortality in 50 c...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2013.11.004
更新日期:2014-01-01 00:00:00