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https://www.readbyqxmd.com/read/29156835/indonesian-herbal-medicine-prevents-hypertension-induced-left-ventricular-hypertrophy-by-diminishing-nadph-oxidase-dependent-oxidative-stress
#1
Erna Sulistyowati, Jong-Hau Hsu, Yuan-Bin Cheng, Fang-Rong Chang, Ying-Fu Chen, Jwu-Lai Yeh
Indonesian herbal medicine Centella asiatica, Justicia gendarussa and Imperata cylindrica decoction (CJID) are known to be efficacious for hypertension. Oxidative stress plays an important role in hypertension-induced left ventricular hypertrophy (H-LVH). This study evaluated whether CJID inhibit cardiac remodeling in spontaneously hypertensive rats (SHRs) through mechanism of oxidative stress-related cardiac-NADPH oxidase (NOXs) pathway: NOX1, NOX2 and NOX4. Forty-weeks-old SHRs and normotensive-WKY rats, were both randomly divided into 2 groups: CJID and control...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156826/protective-effect-of-ginkgo-biloba-leaves-extract-egb761-on-myocardium-injury-in-ischemia-reperfusion-rats-via-regulation-of-tlr-4-nf-%C3%AE%C2%BAb-signaling-pathway
#2
Yuping Tang, Guisheng Zhou, Lijun Yao, Ping Xue, Danhong Yu, Renjie Xu, Wen Shi, Xin Yao, Zhaowei Yan, Jin-Ao Duan
Beneficial actions of EGb 761 against ischemia/reperfusion (I/R) injury in lung, brain and renal ischemia have been described. However, the relationship between EGb 761 and signal molecules in myocardial ischemia reperfusion has not been well elucidated. In this study, we investigated the effects and mechanism of EGb 761 preconditioning on anti-myocardial I/R injuries in vivo. Meanwhile, their potential anti-oxidative stress and anti-inflammation effect were assessed. Hemodynamic parameters were monitored as left ventricular systolic pressure, LV end-diastolic pressure and maximal rate of increase and decrease of left ventricular pressure (dP/dtmax)...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29155790/a-mouse-5-6th-nephrectomy-model-that-induces-experimental-uremic-cardiomyopathy
#3
Xiaoliang Wang, Muhammad A Chaudhry, Ying Nie, Zijian Xie, Joseph I Shapiro, Jiang Liu
Chronic kidney disease (CKD) is a great risk factor for cardiovascular disease events and mortality, and progressively develops to the clinical phenotype called "uremic cardiomyopathy". We describe here an experimental CKD mouse model, named 5/6(th) partial nephrectomy (PNx) with pole ligation, which developed uremic cardiomyopathy at four weeks post-surgery. This PNx model was performed by a two-step surgery. In step-one surgery, both poles of the left kidney were ligated. In step-two surgery, which was performed 7 days after the step-one surgery, the right kidney was removed...
November 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155385/local-low-dose-urokinase-thrombolysis-for-the-management-of-hemodynamically-stable-pulmonary-embolism-with-right-ventricular-dysfunction
#4
Sara Alcántara Carmona, Marina Pérez Redondo, Luis Nombela Franco, Rocío González Costero, Bárbara Balandín Moreno, Miguel Valdivia de la Fuente, Santiago Méndez Alonso, Agustín García Suárez, Ana Royuela
AIMS: To evaluate the effectiveness of local low-dose urokinase thrombolysis (LLDUT) in hemodynamically stable pulmonary embolism with right ventricular dysfunction (RVD). METHODS AND RESULTS: Prospective study. LLDUT with a 200,000 IU bolus followed by a 100,000 IU/h infusion. Treatment duration was determined through radiological control performed 48-72h into treatment. Follow-up echocardiogram was performed within seven days after LLDUT completion. Evolution of thrombus burden, pulmonary artery pressures (PAP) and RVD were studied, and hemorrhagic complications and mortality were recorded...
November 21, 2017: EuroIntervention
https://www.readbyqxmd.com/read/29155297/divergent-profile-between-hypothalamic-and-plasmatic-aminopeptidase-activities-in-wky-and-shr-influence-of-beta-adrenergic-blockade
#5
Isabel Prieto, Ana B Segarra, Marc de Gasparo, Magdalena Martínez-Cañamero, Manuel Ramírez-Sánchez
AIMS: Wistar-Kyoto (WKY) and spontaneously hypertensive rats (SHR) differ in their renin-angiotensin system function and sympathetic tone. The metabolism of angiotensins and vasopressin depends on the action of certain aminopeptidases whose activity may be influenced by the autonomic nervous system. Their regulation may differ between WKY and SHR in hypothalamus and plasma according to the sympathetic tone. We analyzed aminopeptidases responsible for the hydrolysis of certain angiotensins, vasopressin, cholecystokinin or enkephalins in hypothalamus and plasma of WKY and SHR in untreated controls rats and under beta-adrenoceptor blockade...
November 16, 2017: Life Sciences
https://www.readbyqxmd.com/read/29155072/a-protocol-to-study-ex-vivo-mouse-working-heart-at-human-like-heart-rate
#6
Han-Zhong Feng, Jian-Ping Jin
Genetically modified mice are widely used as experimental models to study human heart function and diseases. However, the fast rate of normal mouse heart at 400-600bpm limits its capacity of assessing kinetic parameters that are important for the physiology and pathophysiology of human heart that beats at a much slower rate (75-180bpm). To extend the value of mouse models, we established a protocol to study ex vivo mouse working hearts at a human-like heart rate. In the presence of 300μM lidocaine to lower pacemaker and conductive activities and prevent arrhythmia, a stable rate of 120-130bpm at 37°C is achieved for ex vivo mouse working hearts...
November 16, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29154434/right-ventricular-involvement-in-cardiac-sarcoidosis-demonstrated-with-cardiac-magnetic-resonance
#7
Jan-Peter Smedema, Robert-Jan van Geuns, Gillian Ainslie, Joris Ector, Hein Heidbuchel, Harry J G M Crijns
AIMS: Cardiac involvement in sarcoidosis is reported in up to 30% of patients. Left ventricular involvement demonstrated by contrast-enhanced cardiac magnetic resonance has been well validated. We sought to determine the prevalence and distribution of right ventricular late gadolinium enhancement in patients diagnosed with pulmonary sarcoidosis. METHODS AND RESULTS: We prospectively evaluated 87 patients diagnosed with pulmonary sarcoidosis with contrast-enhanced cardiac magnetic resonance for right ventricular involvement...
November 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29154430/lower-than-expected-burden-of-premature-ventricular-contractions-impairs-myocardial-function
#8
Øyvind H Lie, Jørg Saberniak, Lars A Dejgaard, Mathis K Stokke, Finn Hegbom, Ole-Gunnar Anfinsen, Thor Edvardsen, Kristina H Haugaa
AIMS: We aimed to explore the burden of frequent premature ventricular contractions (PVCs) associated with myocardial dysfunction in patients with outflow tract arrhythmia (OTA). We hypothesized that this threshold is lower than the previously suggested threshold of 24 000 PVCs/24 h (24%PVC) when systolic function is assessed by strain echocardiography. Furthermore, we aimed to characterize OTA patients with malignant arrhythmic events. METHODS AND RESULTS: We included 52 patients referred for OTA ablation (46 ± 12 years, 58% female)...
November 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29154425/influence-of-renal-impairment-on-aldosterone-status-calcium-metabolism-and-vasopressin-activity-in-outpatients-with-systolic-heart-failure
#9
Helle Bosselmann, Niels Tonder, György Sölétormos, Freja Gaborit, Kasper Rossing, Kasper Iversen, Jens Peter Goetze, Finn Gustafsson, Morten Schou
AIMS: Renal dysfunction (RD) is associated with increased morbidity and mortality in heart failure (HF). At present, no specific treatment for patients with RD, to prevent progression of HF, has been developed. How different hormone axes-and thereby potential treatment options-are affected by RD in HF warrants further investigations. METHODS AND RESULTS: Patients with left ventricular ejection fraction (LVEF) <0.45% were enrolled prospectively from an outpatient HF clinic...
November 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29154247/diagnostic-evaluation-of-neck-torsion-test-in-objective-examination-in-patients-with-vertigo-and-or-hearing-impairment
#10
Piotr Niewiadomski, Marzena Bielińska, Piotr Pietkiewicz, Jurek Olszewski
INTRODUCTION: The aim of the study was to evaluate the neck torsion test in objective examinations of patients with vertigo and/or hearing loss. MATERIAL AND METHODS: The study was conducted in 100 patients, including 54 women and 46 men aged 17-79 years, who were divided into two groups: I - 50 patients, including 30 women and 20 men aged 17-79 years (mean age 49.92 years) with dizziness and/or hearing impairments, and confirmed asymmetry of intracranial vessels, II - 50 patients - the control group, including 24 women and 26 men aged 20-71 years without dizziness and/or hearing disorders and without disturbance in the construction of intracranial vessels...
October 30, 2017: Otolaryngologia Polska
https://www.readbyqxmd.com/read/29153687/influence-of-non-dipping-pattern-of-blood-pressure-in-gestational-hypertension-on-maternal-cardiac-function-hemodynamics-and-intrauterine-growth-restriction
#11
A Ilic, D J Ilic, S Tadic, M Stefanovic, A Stojsic-Milosavljevic, K Pavlovic, A Redzek, L Velicki
BACKGROUND: An association between gestational hypertension (GH) and changes of maternal cardiac function was previously reported. AIM: The study assessed the effect of non-dipping pattern of blood pressure (BP) in GH on haemodynamic function and intrauterine growth restriction (IUGR). METHODS: This study included 126 women (91 with GH and 35 normotensive controls). Based on the BP values measured by ambulatory blood pressure monitoring (ABPM), all hypertensive women were classified in dipper (46 women) or in non-dipper group (45 women)...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29153571/association-of-abnormal-left-ventricular-functional-reserve-with-outcome-in-heart-failure-with-preserved-ejection-fraction
#12
Wojciech Kosmala, Monika Przewlocka-Kosmala, Aleksandra Rojek, Andrzej Mysiak, Andrzej Dabrowski, Thomas H Marwick
OBJECTIVES: This study sought to determine the prognostic value of abnormal diastolic and systolic responses to exercise (on the basis of exertional E/e' and global longitudinal strain rate [GSR]) in a well-characterized population of patients with heart failure with preserved ejection fraction (HFpEF). BACKGROUND: Impaired cardiovascular functional reserve is believed to contribute to adverse outcomes in HFpEF. However, the exact characteristics of pathophysiological profiles associated with increased clinical risk are still poorly defined...
November 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29153568/maternal-obesity-and-cardiac-development-in-the-offspring-study-in-human-neonates-and-minipigs
#13
Maria Angela Guzzardi, Tiziana Liistro, Luna Gargani, Lamia Ait Ali, Gennaro D'Angelo, Silvia Rocchiccioli, Federica La Rosa, Alessandra Kemeny, Elena Sanguinetti, Nadia Ucciferri, Mariarosaria De Simone, Antonietta Bartoli, Pierluigi Festa, Piero A Salvadori, Silvia Burchielli, Rosa Sicari, Patricia Iozzo
OBJECTIVES: The aim of this study was to investigate the consequences of maternal overweight on cardiac development in offspring in infants (short term) and minipigs (short and longer term). BACKGROUND: The epidemic of overweight involves pregnant women. The uterine environment affects organ development, modulating disease susceptibility. Offspring of obese mothers have higher rates of cardiovascular events and mortality. METHODS: Echocardiography was performed in infants born to lean and overweight mothers at birth and at 3, 6, and 12 months of age...
November 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29153508/patient-characteristics-in-variable-left-ventricular-recovery-from-takotsubo-syndrome
#14
Jae I Kim, Charan Yerasi, Alaa Azzouqa, Edward Koiffman, Gaby Weissman, Zuyue Wang, John Moran, Rebecca Torguson, Lowell F Satler, Augusto D Pichard, Ron Waksman, Joseph Lindsay, Itsik Ben-Dor
BACKGROUND: Takotsubo syndrome (TTS) is a heart failure syndrome which is usually reversible. Factors associated with degree of recovery of left ventricular systolic function in TTS are poorly understood. MATERIALS AND METHODS: We conducted a retrospective analysis of 90 TTS patients treated at our institution from 2006 to 2014. Patients were grouped based on recovery of left ventricular ejection fraction (LVEF) on follow-up transthoracic echocardiogram as left ventricular ejection fraction <50% (partial group) or preserved ejection fraction ≥50% (full group)...
October 5, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29153286/combined-transaortic-and-transapical-approach-to-septal-myectomy-in-patients-with-complex-hypertrophic-cardiomyopathy
#15
Dustin Hang, Hartzell V Schaff, Steve R Ommen, Joseph A Dearani, Rick A Nishimura
OBJECTIVES: Residual midventricular obstruction after transaortic myectomy may lead to recurrent symptoms and reoperation in patients with hypertrophic cardiomyopathy and long-segment septal hypertrophy. A combined transaortic and transapical approach to septal myectomy during initial operation allows for the complete relief of subaortic and midventricular gradients and may reduce the risk of poor late functional results. METHODS: We analyzed the early outcomes of 86 patients aged 18 years or more who underwent combined transaortic and transapical septal myectomy for left ventricular outflow tract obstruction due to systolic anterior motion and midventricular obstruction or cavitary obliteration due to apical hypertrophic cardiomyopathy...
October 27, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29152859/deletion-of-the-egf-receptor-in-vascular-smooth-muscle-cells-prevents-chronic-angiotensin-ii-induced-arterial-wall-stiffening-and-media-thickening
#16
Barbara Schreier, Mirja Hünerberg, Sigrid Mildenberger, Sindy Rabe, Daniel Bethmann, Claudia Wickenhauser, Michael Gekle
AIM: In vivo vascular smooth muscle cell (VSMC) EGF receptor (EGFR) contributes to acute angiotensin II (AII) effects on vascular tone and blood pressure. The ubiquitously expressed EGFR has been implicated in vascular remodeling preceding end-organ damage by pharmacological inhibition, and AII signaling in cultured vascular cells is partly EGFR dependent. However the role of VSMC-EGFR in vivo during AII-induced pathophysiological processes is not known. METHODS: The present study assesses the in vivo relevance of VSMC-EGFR during chronic AII challenge without further stressors, using a mouse model with inducible, VSMC-specific EGFR knock out (VSMC-EGFR-KO)...
November 20, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/29152121/longitudinal-evaluation-of-myocardial-glucose-metabolism-and-contractile-function-in-obese-type-2-diabetic-db-db-mice-using-small-animal-dynamic-18-f-fdg-pet-and-echocardiography
#17
Kuan-Yin Ko, Yen-Wen Wu, Cheng-Wei Liu, Mei-Fang Cheng, Ruoh-Fang Yen, Wei-Shiung Yang
The aim was to evaluate sequential changes of myocardial glucose utilization and LV systolic function in db/db mice. Eight db/db and eight wild-type mice underwent plasma substrate analysis and dynamic (18)F-FDG PET at week 8 (W8), W10, W12, W14, and W16. (18)F-FDG uptake constant Ki and the rate of myocardial glucose uptake (MRGlu) were derived via Patlak graphic analysis. Another 8 db/db and 8 wild-type mice received echocardiography at W8, W12, and W16 and LV structure and function were measured. The db/db mice showed increased weights and glucose levels as they aged...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29151492/determinants-of-the-change-in-arterial-stiffness-in-peritoneal-dialysis-patients
#18
Mitsutaka Nakahigashi, Hiroyasu Tsukaguchi, Satoshi Morimoto, Chikara Nakano, Hiroko Ueda, Kazunori Someya, Makiko Kusabe, Sanae Kikuchi, Takanobu Imada, Ichiro Shiojima
Arterial stiffness is an important risk factor for cardiovascular disease (CVD) in patients with end-stage renal failure. However, little is known about the factors that contribute to arterial rigidity in peritoneal dialysis (PD) patients. The aim of this study was to define the pattern and determinants of the longitudinal change in arterial stiffness after PD initiation.Arterial stiffening was estimated for 46 PD patients by using brachial-ankle pulse wave velocity (baPWV) and carotid intima-media thickness (cIMT)...
November 17, 2017: International Heart Journal
https://www.readbyqxmd.com/read/29151416/-short-term-deep-sedation-strategy-in-patients-with-spontaneous-intracerebral-hemorrhage-a-randomized-controlled-trial
#19
Zhuheng Wang, Chunzhi Shi, Liping Sun, Qinghua Guo, Wei Qiao, Guanhua Zhou
OBJECTIVE: To evaluate the efficacy and safety of short-term deep sedation strategy in patients with spontaneous intracerebral hemorrhage (ICH) after surgery. METHODS: A perspective, randomized, parallel-group study was conducted. Adult patients with spontaneous ICH and undergoing craniotomy admitted to Daxing Teaching Hospital of Capital Medical University from December 2015 to November 2016 were enrolled. The patients who received surgery were randomly divided into a short-term deep sedation and a slight and middle sedation group...
November 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29151320/effects-of-whole-blood-viscosity-and-plasma-nox-on-cardiac-function-and-cerebral-blood-flow-in-children-with-chronic-kidney-disease
#20
Necla Buyan, Meltem Akçaboy, Tayfun Göktaş, Serdar Kula, Bijen Nazlıel, Nilgün Çakar, Nermin Uncu, Bülent Çelik, Deniz Erbaş
Background/aim: The aim of the study was to investigate the effects of whole blood viscosity and plasma nitric oxide on cerebral and cardiovascular risks associated with chronic kidney disease. Materials and methods: The study group consisted of 40 pediatric patients and 21 healthy control subjects. Hematologic and biochemical variables, viscosity and plasma nitric oxide levels, echocardiographic findings, and middle cerebral artery blood flow velocity were examined. Results: Viscosity values of patients were significantly lower than those of the control group...
November 13, 2017: Turkish Journal of Medical Sciences
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