PWV, pulse wave velocity

  • 文章类型: Journal Article
    蛋白酶体抑制剂(PIs)是多发性骨髓瘤和AL淀粉样变性患者联合治疗的骨干,同时也出现在Waldenström巨球蛋白血症和其他恶性肿瘤中。PIs作用于蛋白酶体肽酶,由于积累聚集而导致蛋白质组不稳定,展开,和/或受损的多肽;持续的蛋白质组不稳定性然后诱导细胞周期停滞和/或细胞凋亡。卡菲佐米,静脉内不可逆PI,与口服给药的Ixazomib或静脉内可逆性PI如硼替佐米相比,表现出更严重的心血管毒性特征。心血管毒性包括心力衰竭,高血压,心律失常,和急性冠脉综合征。因为PI是血液系统恶性肿瘤和淀粉样变性治疗的关键组成部分,管理他们的心血管毒性包括识别有风险的患者,在临床前水平早期诊断毒性,并在需要时提供心脏保护。未来的研究需要阐明潜在的机制,改善风险分层,定义最优管理策略,并开发具有安全心血管特征的新PI。
    Proteasome inhibitors (PIs) are the backbone of combination treatments for patients with multiple myeloma and AL amyloidosis, while also indicated in Waldenström\'s macroglobulinemia and other malignancies. PIs act on proteasome peptidases, causing proteome instability due to accumulating aggregated, unfolded, and/or damaged polypeptides; sustained proteome instability then induces cell cycle arrest and/or apoptosis. Carfilzomib, an intravenous irreversible PI, exhibits a more severe cardiovascular toxicity profile as compared with the orally administered ixazomib or intravenous reversible PI such as bortezomib. Cardiovascular toxicity includes heart failure, hypertension, arrhythmias, and acute coronary syndromes. Because PIs are critical components of the treatment of hematological malignancies and amyloidosis, managing their cardiovascular toxicity involves identifying patients at risk, diagnosing toxicity early at the preclinical level, and offering cardioprotection if needed. Future research is required to elucidate underlying mechanisms, improve risk stratification, define the optimal management strategy, and develop new PIs with safe cardiovascular profiles.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    未经证实:糖蛋白胎球蛋白A具有抗炎作用,增加胰岛素抵抗,在钙代谢中起重要作用。本研究的目的是与已建立的心血管生物标志物高敏C反应蛋白(hsCRP)相比,评估胎球蛋白A对动脉粥样硬化斑块进展的预测价值。
    未经批准:在此前瞻性中,单中心-,队列研究,我们纳入了194例至少有一种心血管危险因素或已确诊心血管疾病(CVD)的患者.在4年的时间里,每例患者每年接受颈动脉和股动脉的3D斑块容积测定.为了评估生物标志物在斑块进展方面的预测价值,胎球蛋白A和hsCRP的基线值与从基线到最后一次随访的斑块进展相关.
    UNASSIGNED:171例患者纳入最终分析。基线胎球蛋白A水平与斑块进展呈显著负相关(r=-0.244;p=0.001)。相比之下,基线hsCRP水平与斑块进展无相关性(r=0.096,p=0.20).在ROC分析中,胎球蛋白A的预测价值明显优于hsCRP(胎球蛋白AAUC0.67;p=0.001vshsCRPAUC0.49;p=0.88),最佳临界值为712μg/ml。在高胎球蛋白A水平(>712μg/ml)的患者中,与低胎球蛋白-A水平<712μg/ml的组相比,观察到斑块进展显着降低(高胎球蛋白-A197mm3与低胎球蛋白-A279mm3;p=0.01)。
    未经证实:在患有心血管疾病或有心血管疾病风险的患者中,较高的胎球蛋白-A水平似乎可预测较低的动脉粥样硬化斑块进展。
    UNASSIGNED: The glycoprotein fetuin-A has anti-inflammatory effects, increases insulin resistance and plays an important role in calcium metabolism. The aim of our study was to assess the predictive value of fetuin-A on atherosclerotic plaque progression in comparison to the established cardiovascular biomarker high sensitivity C-reactive protein (hsCRP).
    UNASSIGNED: In this prospective, single center-, cohort study, we included 194 patients with at least one cardiovascular risk factor or established cardiovascular disease (CVD). Over a period of 4 years, each patient underwent 3D plaque volumetry of the carotid and femoral arteries on a yearly basis. To evaluate the predictive value of biomarkers in terms of plaque progression, the baseline values of fetuin-A and hsCRP were correlated with the plaque progression from baseline to the last follow up visit.
    UNASSIGNED: 171 patients were included in the final analysis. Baseline fetuin-A levels showed a significant negative correlation with plaque progression (r = -0.244; p = 0.001). In contrast, baseline hsCRP levels showed no correlation with plaque progression (r = 0.096, p = 0.20). In the ROC-analysis, fetuin-A had a significantly better predictive value than hsCRP (fetuin-A AUC 0.67; p = 0.001 vs hsCRP AUC 0.49; p = 0.88) with an optimal cut-off value at 712 μg/ml. In patients with high fetuin A levels (>712 μg/ml), a significantly lower plaque progression was observed compared to the group with low fetuin-A levels <712 μg/ml (high fetuin-A 197 mm3 vs. low fetuin-A 279 mm3; p = 0.01).
    UNASSIGNED: Higher fetuin-A levels appear to predict lower atherosclerotic plaque progression in patients with or at risk of cardiovascular disease.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    妊娠高血压疾病(HDP)是全球孕产妇发病和死亡的主要原因。不幸的是,这些疾病的发展缺乏准确的早期临床筛查方法。动脉僵硬度(AS)是血管健康的重要血液动力学指标,已显示出预测HDP发作的有希望的结果。该领域过去的系统评价报告了发生HDP的妇女AS指数的增加,并强调了AS测量作为妊娠早期预测工具的潜力。最近的系统审查,包括截至2015年的论文,评估了有和没有妊娠并发症的女性之间AS参数的差异。从那以后,关于该主题的已发表研究大量涌入,并且对将AS测量纳入临床实践的兴趣日益浓厚。因此,我们提出了一项系统综述和荟萃分析,该综述和荟萃分析更涵盖所有HDP亚群和血管健康的各种血液动力学指标,以全面概述目前的证据状况.具体来说,我们的目标是评估与正常血压妊娠相比发生HDPs的女性的这些指标,以确定哪些指标与HDPs的发生最相关和/或可以预测HDPs的发生.主要数据库(Medline,Embase,科克伦图书馆,WebofScience,PubMed,和CINAHL),将搜索灰色文献(GoogleScholar)和临床试验(clinicaltrials.gov),以确定报告有和没有HDP的孕妇AS和血液动力学测量的研究。对研究类型或年份没有限制。文章将由三位作者独立评估,以根据纳入和排除标准确定资格。将评估纳入研究的方法学质量。将使用随机效应模型进行汇集分析。还将评估发表偏倚和研究之间的异质性。异质性的来源将通过敏感性来探索,子组,和/或荟萃回归分析。这项研究的结果将通过科学会议和科学期刊上的出版物分享。对HDP发病的潜在AS和血流动力学标志物的分析将有助于制定筛查指南和临床相关的AS和HDP风险的血流动力学标志物的临界值。指导未来的研究。编写本协议没有适用的道德考虑。
    Hypertensive disorders of pregnancy (HDPs) are a leading cause of maternal morbidity and mortality worldwide. Unfortunately, accurate early clinical screening methods for the development of these disorders are lacking. Arterial stiffness (AS) is an important hemodynamic indicator of vascular health that has shown promising results for the prediction of HDP onset. Past systematic reviews in the field have reported an increase in AS indices in women who develop HDPs and have highlighted the potential of AS measurements as a predictive tool early in pregnancy. The most recent systematic review, including papers up to 2015, assessed the differences in AS parameters between women with and without pregnancy complications. Since then, there has been a substantial influx of published research on the topic and a growing interest in the incorporation of AS measurements into clinical practice. Thus, we propose a systematic review and meta-analysis that is more inclusive to all HDP subsets and various hemodynamic indices of vascular health to provide a comprehensive overview of the current state of evidence. Specifically, we aim to evaluate these measures in women who develop HDPs compared to normotensive pregnancies to determine which measures are most associated with and/or can predict the development of HDPs. Major databases (Medline, Embase, The Cochrane Library, Web of Science, PubMed, and CINAHL), grey literature (Google Scholar) and clinical trials (clinicaltrials.gov) will be searched to identify studies that report AS and hemodynamic measurements in pregnant women with and without HDPs. No restrictions will be made on study type or year. Articles will be independently evaluated by three authors to determine eligibility based on inclusion and exclusion criteria. Methodological quality of included studies will be assessed. Pooled analyses will be conducted using a random-effects model. Publication bias and between-study heterogeneity will also be assessed. Sources of heterogeneity will be explored by sensitivity, subgroup, and/or meta-regression analyses. Results from this study will be shared through scientific conferences and publications in scientific journals. The analysis of potential AS and hemodynamic markers for HDP onset will help inform the development of screening guidelines and clinically relevant cut-off values of AS and hemodynamic markers for HDP risk, guiding future research. There are no applicable ethical considerations to the writing of this protocol.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    我们通过心脏磁共振(CMR)成像评估了长期静息心率(HR)≥70次/分钟(bpm)和慢性冠状动脉综合征(CCS)的患者的左心室(LV)功能和中心血流动力学影响。
    在随机分组中,双盲,前瞻性交叉设计,23名患者(18名男性,5名女性)接受伊伐布雷定(7.5mgbid)或安慰剂治疗6个月。在基线以及6个月和12个月后进行CMR成像以确定LV功能参数。在安慰剂期间,伊伐布雷定治疗的平均静息HR为58±8.2bpm和70.2±8.3bpm(p<0.0001)。收缩期左心室射血分数无差异(伊伐布雷定57.4±11.2%与安慰剂53.0±10.9%,p=0.18),指数舒张末期(EDVi)或收缩末期容积(ESVi)。用伊伐布雷定治疗后,指数每搏输出量(SVi)(ml/m2)保持不变。反映左心室收缩功能的容积时间曲线参数(峰值射血率和时间)不受伊伐布雷定的影响,而峰值充盈率(PFR)和PFR/EDV均显着增加。使用伊伐布雷定治疗期间平均主动脉速度(cm/s)显着降低(伊伐布雷定6.7±2.7与安慰剂9.0±3.4,p=0.01)。主动脉流量参数与血管硬度参数相关。显示平均主动脉速度与主动脉扩张性(AD)的相关性最强(r=-0.86[-0.90至-0.85],p<0.0001)。
    伊伐布雷定长期降低CCS患者的心率可改善舒张功能并降低平均主动脉流速。
    UNASSIGNED: We assessed left ventricular (LV) function and central hemodynamic effects in patients with a heart rate (HR) at rest of ≥70 beats per minute (bpm) and chronic coronary syndrome (CCS) after long-term treatment with ivabradine compared to placebo by cardiac magnetic resonance (CMR) imaging.
    UNASSIGNED: In a randomized, double-blinded, prospective cross-over design, 23 patients (18 male, 5 female) were treated with ivabradine (7.5 mg bid) or placebo for 6 months. CMR imaging was performed at baseline and after 6 and 12 months to determine LV functional parameters.Mean resting HR on treatment with ivabradine was 58 ± 8.2 bpm and 70.2 ± 8.3 bpm during placebo (p < 0.0001).There was no difference in systolic LV ejection fraction (ivabradine 57.4 ± 11.2% vs placebo 53.0 ± 10.9%, p = 0.18), indexed end-diastolic (EDVi) or end-systolic volumes (ESVi). Indexed stroke volume (SVi) (ml/m2) remained unchanged after treatment with ivabradine. Volume time curve parameters reflecting systolic LV function (peak ejection rate and time) were unaffected by ivabradine, while both peak filling rate (PFR) and PFR/EDV were significantly increased. Mean aortic velocity (cm/s) was significantly reduced during treatment with ivabradine (ivabradine 6.7 ± 2.7 vs placebo 9.0 ± 3.4, p = 0.01). Aortic flow parameters were correlated to parameters of vascular stiffness. The strongest correlation was revealed for mean aortic velocity with aortic distensibility (AD) (r = -0.86 [-0.90 to -0.85], p < 0.0001).
    UNASSIGNED: Long-term reduction of HR with ivabradine in patients with CCS improved diastolic function and reduced mean aortic flow velocity.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

       PDF(Pubmed)

  • 文章类型: Journal Article
    UNASSIGNED: Increased aortic stiffness has been established as a marker in various cardiovascular diseases. Previous reports revealed a significant correlation between aortic stiffness and myocardial scarring using the late gadolinium enhancement cardiovascular magnetic resonance (LGE-CMR). However, prognostic data concerning aortic stiffness combining myocardial scarring remains limited.
    UNASSIGNED: A total of 402 patients who had undergone clinical CMR for the evaluation of cardiac function, LGE, and aortic pulse wave velocity (PWV) using velocity encoded-CMR (VE-CMR) were included. Patients were classified into 4 groups using mean PWV and the presence of LGE as elevated or non-elevated PWV and positive or negative LGE. Patients received follow-up for major adverse cardiovascular events (MACE) comprising cardiovascular death, non-fatal myocardial infarction, hospitalization for heart failure, coronary revascularization, and ischemic stroke. Predictors of MACE and hard cardiac events (cardiovascular death or non-fatal myocardial infarction) were evaluated.
    UNASSIGNED: During the average follow-up period of 47.7 months, 58 MACE occurred. Patients who had elevated PWV and positive LGE experienced the highest rate of MACE compared to the group with non-elevated PWV and negative LGE (HR 11.90, p < 0.001). Among patients who had LGE, those who had elevated PWV experienced a 2.4-times higher rate of MACE compared to those who had non-elevated PWV. Multivariate analysis showed that PWV and LGE were independent predictors of MACE and hard cardiac events. PWV had excellent intra- and inter-observer reproducibility (intra-: ICC = 0.98, p < 0.001, inter-: ICC = 0.97, p < 0.001).
    UNASSIGNED: Aortic stiffness using VE-CMR had prognostic value to predict cardiovascular events, with the added benefits of LGE.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

       PDF(Pubmed)

  • 文章类型: Journal Article
    The Moens-Korteweg equation predicts changes in pulse wave velocity (PWV) after changes in arterial radius; therefore, an increase in arterial radius, as seen in a reactive hyperemia (RH) condition, should slow PWV over a given arterial segment. If this assumption is true, then the deceleration of PWV over the brachial artery (flow-mediated slowing [FMS]) should be an equivalent signal of endothelial function during a conventional RH flow-mediated dilation (FMD) procedure. Our aim was to compare FMS with FMD after RH in healthy individuals as part of a study that seeks to evaluate the clinical usefulness of FMS as a noninvasive approach to characterize endothelial function. This cross-sectional study included 25 healthy participants (18 women [72%]) with a mean ± SD age of 21.12±0.73 years. The FMD and FMS were simultaneously measured. A significant correlation was observed between both measures of FMS (absolute difference and percentage variation) and echo FMD: R=-0.42 (P=.04) and r=0.46 (P=.02), respectively. The FMS was shown to depend on the baseline brachial diameter, with smaller variations depicted for smaller baseline brachial diameters. It seems to be a promising and feasible method for measuring changes after RH, although further studies are needed to evaluate how this correlation holds in different clinical conditions and to demonstrate its clinical usefulness.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

       PDF(Pubmed)

  • 文章类型: Journal Article
    Undetected high risk for premature death of cardiovascular disease (CVD) among individuals with low-to-moderate risk factor scores is an acknowledged obstacle to CVD prevention. The vasculature\'s functional robustness against risk factor derailment may serve as a novel discriminator of mortality risk under similar risk factor loads. To test this assumption, we hypothesized that the expected inverse robustness-mortality association is verifiable as a significant trend along the age spectrum of risk factor-challenged cohorts. This is a retrospective cohort study of 372 adults (mean age 56.1 years, range 21-92; 45% female) with a variety of CV risk factors. An arterial model (VascAssist 2, iSYMED GmbH, Germany) was used to derive global parameters of arterial function from non-invasively acquired pulse pressure waves. Participants were stratified by health status: apparently healthy (AH; n = 221); with hypertension and/or hypercholesterolemia (CC; n = 61); with history of CV event(s) (CVE; n = 90). Multivariate linear regression was used to derive a robustness score which was calibrated against the CVD mortality hazard rate of a sub-cohort of the LURIC study (n = 1369; mean age 59.1 years, range 20-75; 37% female). Robustness correlated linearly with calendar age in CC (F(1, 59) = 10.42; p < 0.01) and CVE (F(1, 88) = 40.34; p < 0.0001) but not in the AH strata, supporting the hypothesis of preferential elimination of less robust individuals along the aging trajectory under risk factor challenges. Vascular robustness may serve as a biomarker of vulnerability to CVD risk factor challenges, prognosticating otherwise undetectable elevated risk for premature CVD mortality.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    Vitamin K is considered to be involved in the pathological mechanisms of coronary artery calcification (CAC). Correlation between CAC and plasma vitamin K levels was studied. A total of 103 patients, with at least one coronary risk factor, were studied. CAC was measured using 64-slice multislice computed tomography (MSCT) and divided into three groups: none (CAC score = 0; n 25), mild to moderate (0 < CAC score < 400; n 52) and severe (CAC score > 400; n 26). Phylloquinone (PK) and menaquinone (MK)-4 and MK-7 were measured by HPLC-tandem MS. Mean age of patients was 64 (sd 13) years, of which 57 % were male. Median CAC score was 57·2. Median levels of PK, MK-4 and MK-7 were 1·33, 0 and 6·99 ng/ml, showing that MK-7 was the dominant vitamin K in this population. MK-7 showed a significant inverse correlation with uncarboxylated osteocalcin (ucOC, P = 0·014), protein induced by vitamin K absence of antagonist-2 (PIVKA-2, P = 0·013), intact parathyroid hormone (P = 0·007) and bone-specific alkaline phosphatase (P = 0·018). CAC showed an inverse correlation with total circulating uncarboxylated matrix Gla protein (t-ucMGP, P = 0·018) and Hb (P = 0·05), and a positive correlation with age (P < 0·001), creatinine, collagen type 1 cross-linked N-terminal telopeptide (NTX, P = 0·03), pulse wave velocity (P < 0·001) and osteoprotegerin (P < 0·001). However, CAC did not have a significant correlation with plasma levels of PK, MK-4 or MK-7. In conclusion, plasma MK-7, MK-4 or PK level did not show significant correlation with CAC despite the association between plasma vitamin K levels and vitamin K-dependent proteins such as ucOC or PIVKA-2.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

  • 文章类型: Journal Article
    怀孕和出生队列已被广泛用于调查健康和疾病的发育起源,特别是在了解肥胖和相关心脏代谢紊乱的病因方面。出生和怀孕队列已被广泛用于调查这一研究领域。本综述的目的是双重的:首先概述测量儿童心脏代谢风险的必要性;其次概述如何评估。被认为具有重要发育成分的主要结果是CVD,胰岛素抵抗和相关代谢结果。比如代谢综合征,2型糖尿病和CHD在中年和老年个体中的患病率均达到高峰,但评估儿童和青少年时期的心脏代谢风险对于确定早期致病因素和确定预防措施的特征非常重要.通常,调查前瞻性队列研究的研究人员依赖于心血管危险因素,比如血脂异常,高血压和肥胖,从童年到成人生活。本综述总结了这些因素的一些证据,当在童年测量时,可能对评估成人心脏代谢疾病的风险有价值,因此,继续描述一些评估儿童心脏代谢风险的方法。
    Pregnancy and birth cohorts have been utilised extensively to investigate the developmental origins of health and disease, particularly in relation to understanding the aetiology of obesity and related cardiometabolic disorders. Birth and pregnancy cohorts have been utilised extensively to investigate this area of research. The aim of the present review was twofold: first to outline the necessity of measuring cardiometabolic risk in children; and second to outline how it can be assessed. The major outcomes thought to have an important developmental component are CVD, insulin resistance and related metabolic outcomes. Conditions such as the metabolic syndrome, type 2 diabetes and CHD all tend to have peak prevalence in middle-aged and older individuals but assessments of cardiometabolic risk in childhood and adolescence are important to define early causal factors and characterise preventive measures. Typically, researchers investigating prospective cohort studies have relied on the thesis that cardiovascular risk factors, such as dyslipidaemia, hypertension and obesity, track from childhood into adult life. The present review summarises some of the evidence that these factors, when measured in childhood, may be of value in assessing the risk of adult cardiometabolic disease, and as such proceeds to describe some of the methods for assessing cardiometabolic risk in children.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    Arterial stiffness, blood pressure (BP) and blood lipids may be improved by milk in adults and the effects may be mediated via proteins. However, limited is known about the effects of milk proteins on central aortic BP and no studies have examined the effects in children. Therefore, the present trial examined the effect of milk and milk proteins on brachial and central aortic BP, blood lipids, inflammation and arterial stiffness in overweight adolescents. A randomised controlled trial was conducted in 193 overweight adolescents aged 12-15 years. They were randomly assigned to drink 1 litre of water, skimmed milk, whey or casein for 12 weeks. The milk-based test drinks contained 35 g protein/l. The effects were compared with the water group and a pretest control group consisting of thirty-two of the adolescents followed 12 weeks before the start of the intervention. Outcomes were brachial and central aortic BP, pulse wave velocity and augmentation index, serum C-reactive protein and blood lipids. Brachial and central aortic diastolic BP (DBP) decreased by 2·7% (P = 0·036) and 2·6 % (P = 0·048), respectively, within the casein group and the changes were significantly different from those of the pretest control group (P = 0·040 and P = 0·034, respectively). There was a significant increase in central aortic DBP, and in brachial and central systolic BP in the whey group compared with the water group (P = 0·003, P = 0·009 and P = 0·002, respectively). There were no changes in measures of arterial stiffness or blood lipid concentrations. A high intake of casein improves DBP in overweight adolescents. Thus, casein may be beneficial for younger overweight subjects in terms of reducing the long-term risk of CVD. In contrast, whey protein seems to increase BP compared with drinking water; however, water may be considered an active control group.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

公众号