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https://www.readbyqxmd.com/read/29352759/regional-myocardial-function-abnormalities-are-associated-with-macro-and-microcirculation-dysfunction-in-the-metabolic-syndrome-the-resolve-study
#1
Philippe Obert, Guillaume Walther, Frédéric Dutheil, Bruno Lesourd, Robert Chapier, Daniel Courteix, Agnes Vinet
Abnormalities in myocardial and vascular function have been reported in the metabolic syndrome (MetS), but whether these alterations are related remains poorly documented. Our aim was accordingly to investigate interrelationships between macro- and microcirculatory vasoreactivity and left ventricular (LV) myocardial function in MetS patients. Eighty-eight MetS individuals and 44 age- and gender-matched healthy controls were enrolled. LV global longitudinal strain (GLS) was measured using Vector Velocity Imaging...
January 19, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29352146/effects-of-renal-denervation-on-cardiac-structural-and-functional-abnormalities-in-patients-with-resistant-hypertension-or-diastolic-dysfunction
#2
Shiying Wang, Suxia Yang, Xinxin Zhao, Jun Shi
The aim of the present study is to systematically evaluate the impact of RDN on cardiac structure and function in patients with resistant hypertension (RH) or diastolic dysfunction. We retrieved Pubmed, Embase and Cocharane Library databases, from inception to April 1st, 2016. Studies reporting left ventricular mass (LVMI) or left ventricular (LV) diastolic function (reflected by the ratio of mitral inflow velocity to annular relaxation velocity [E/e']) responses to RDN were included. Two randomized controlled trials (RCTs), 3 controlled studies and 11 uncontrolled studies were finally identified...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29351624/takotsubo-cardiomyopathy-associated-with-work-place-bullying
#3
Halla Malik, Nadarajah Kangaharan, Ian Agahari
Background: Takotsubo cardiomyopathy (TC) is a condition of transient left ventricular dysfunction precipitated by acute physical or emotional stress. The pathogenesis of TC is not well understood, but it is known to predominantly affect postmenopausal women in the context of physical or emotional triggers. Aims: To describe a case of TC with an association to a never previously described work place stressor of bullying. Case Report: A 48-year-old female lawyer developed acute chest pain after experiencing significant emotional distress at a workplace meeting...
January 17, 2018: Occupational Medicine
https://www.readbyqxmd.com/read/29351463/intermediary-metabolism-and-fatty-acid-oxidation-novel-targets-of-electron-transport-chain-driven-injury-during-ischemia-and-reperfusion
#4
Qun Chen, Masood S Younus, Jeremy Thompson, Ying Hu, John M Hollander, Edward J Lesnefsky
BACKGROUND: Cardiac ischemia-reperfusion (IR) damages the electron transport chain (ETC) causing mitochondrial and cardiomyocyte injury. Reversible blockade of the ETC at complex I during ischemia protects the ETC and decreases cardiac injury. In the present study, we used an unbiased proteomic approach to analyze the extent of ETC-driven mitochondrial injury during IR. METHODS: Isolated-perfused mouse (C57BL/6) hearts underwent 25 min global ischemia (37{degree sign}C) and 30 min reperfusion...
December 29, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351312/prognostic-relevance-of-elevated-pulmonary-arterial-pressure-assessed-non-invasively-analysis-in-a-large-patient-cohort-with-invasive-measurements-in-near-temporal-proximity
#5
Sebastian Greiner, Andreas Jud, Matthias Aurich, Christoph Geisenberger, Lorenz Uhlmann, Thomas Hilbel, Meinhard Kieser, Hugo A Katus, Derliz Mereles
BACKGROUND: The clinical relevance of non-invasively derived pulmonary arterial pressure (PAP) by Doppler echocardiography (DE) has been questioned in the past. However, transthoracic echocardiography is used as a cornerstone examination for patients with dyspnea and suspected pulmonary hypertension (PH). This study aimed to evaluate the prognostic value of non-invasive assessed PAP in a large population of patients with known or suspected cardiopulmonary disease. METHODS: The analyses are based on data of patients of a tertiary cardiology center that received right heart catheterization (RHC) as well as non-invasively assessed PAP by DE within five days, and includes serological and clinical parameters in a retrospective follow-up for up to eight years...
2018: PloS One
https://www.readbyqxmd.com/read/29350681/aav-9-mediated-phosphatase-1-inhibitor-1-overexpression-improves-cardiac-contractility-in-unchallenged-mice-but-is-deleterious-in-pressure-overload
#6
D M Schwab, L Tilemann, R Bauer, M Heckmann, A Jungmann, M Wagner, J Burgis, C Vettel, H A Katus, A El-Armouche, O J Müller
The downregulation of β-adrenergic receptors (β-AR) and decreased cAMP-dependent protein kinase activity in failing hearts results in decreased phosphorylation and inactivation of phosphatase-inhibitor-1 (I-1), a distal amplifier element of β-adrenergic signaling, leading to increased protein phosphatase 1 activity and dephosphorylation of key phosphoproteins, including phospholamban. Downregulated and hypophosphorylated I-1 likely contributes to β-AR desensitization; therefore its modulation is a promising approach in heart failure treatment...
January 19, 2018: Gene Therapy
https://www.readbyqxmd.com/read/29350208/protective-effect-of-paracetamol-in-doxorubicin-induced-cardiotoxicity-in-ischemia-reperfused-isolated-rat-heart
#7
Mahvash Hesari, Dareuosh Shackebaei, Atefeh Asadmobini
OBJECTIVE: Doxorubicin (DOX) induces cardiac dysfunction. Paracetamol (APAP) has also been established as an effective cardioprotective agent during ischemia/reperfusion. Therefore, this study aims to evaluate the effect of APAP on DOX-induced cardiotoxicity in ischemia/reperfused isolated rat heart. METHODS: A total of 36 rats were equally divided into four groups: control, DOX (30 min, 20 µM DOX perfusion), APAP (15 min before and after ischemia, 0.35 mM APAP perfusion), and DOX+APAP (perfused with the same protocol in DOX and APAP groups)...
January 19, 2018: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/29349588/amphiregulin-enhances-cardiac-fibrosis-and-aggravates-cardiac-dysfunction-in-mice-with-experimental-myocardial-infarction-partly-through-activating-egfr-dependent-pathway
#8
Liang Liu, Xian Jin, Cui-Fen Hu, Ya-Ping Zhang, Zhong'e Zhou, Rong Li, Cheng-Xing Shen
Cardiac fibrosis (CF), a main process of ventricular remodeling after myocardial infarction (MI), plays a crucial role in the pathogenesis of heart failure (HF) post-MI. It is known that amphiregulin (AR) is involved in fibrosis of several organs. However, the expression of AR and its role post-MI are yet to be determined. This study aimed to investigate the impact of AR on CF post-MI and related mechanisms. Significantly upregulated AR expression was evidenced in the infarct border zone of MI mice in vivo and the AR secretion was enhanced in macrophages, but not in cardiac fibroblasts...
January 18, 2018: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29349525/value-of-ct-pulmonary-angiography-to-predict-short-term-outcome-in-patient-with-pulmonary-embolism
#9
Ahmed M Osman, Emad H Abdeldayem
To evaluate the role of CT pulmonary angiography (CTPA) in the assessment of pulmonary embolism (PE) severity and the related CT cardiac changes, reflecting the clinical status of the patients and predicting the outcome. A prospective study of 184 patients presented with suspicious acute PE. All patients underwent CTPA followed by ECHO. Pulmonary artery obstructive index (PAOI) using Qanadli Score was calculated and cardiac changes recorded. The patients' outcome was followed up for 30 days. Only 150 patients completed the study; 26...
January 18, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29348018/myocardial-inflammation-predicts-remodeling-and-neuroinflammation-after-myocardial-infarction
#10
James T Thackeray, Henri C Hupe, Yong Wang, Jens P Bankstahl, Georg Berding, Tobias L Ross, Johann Bauersachs, Kai C Wollert, Frank M Bengel
BACKGROUND: The local inflammatory tissue response after acute myocardial infarction (MI) determines subsequent healing. Systemic interaction may induce neuroinflammation as a precursor to neurodegeneration. OBJECTIVES: This study sought to assess the influence of MI on cardiac and brain inflammation using noninvasive positron emission tomography (PET) of the heart-brain axis. METHODS: After coronary artery ligation or sham surgery, mice (n = 49) underwent serial whole-body PET imaging of the mitochondrial translocator protein (TSPO) as a marker of activated macrophages and microglia...
January 23, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29346535/tricuspid-regurgitation-in-acute-heart-failure-is-there-any-incremental-risk
#11
Diab Mutlak, Jonathan Lessick, Shehrban Khalil, Sergey Yalonetsky, Yoram Agmon, Doron Aronson
Aim: Significant tricuspid regurgitation (TR) is common in heart failure (HF) and portends poor prognosis. We sought to determine whether the poor outcome results from the TR itself, or whether the TR is a surrogate marker of advanced left-sided myocardial or valvular heart disease. Methods and results: We studied 639 patients admitted for acute HF. The relationship between TR severity and the endpoint of readmission for HF or mortality was assessed after adjustment for multiple clinical and echocardiographic parameters...
January 15, 2018: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29345584/mechanical-support-in-cardiogenic-shock-complicating-acute-coronary-syndrome-ready-for-prime-time
#12
Guillaume Schurtz, Marc Laine, Clement Delmas, Francois Kerbaul, Etienne Puymirat, Gilles Lemesle, Laurent Bonello
Cardiogenic shock (CS) is a major challenge in current cardiology. Over the last decade, cardiogenic shock mortality has decreased somewhat, but it still remains high, particularly when associated with ischaemic heart disease. The challenges are numerous and include prevention, accurate diagnosis, prompt management and effective therapies to support a failing heart and prevent multi-organ failure. Despite improvements in the care of acute coronary syndrome (ACS), it remains the most common cause of CS. In addition to existing medical therapy, mechanical circulatory support has been proposed for the management of ventricular failure...
January 16, 2018: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/29345417/catheter-based-edge-to-edge-mitral-valve-repair-for-pulmonary-pressure-reduction-and-to-postpone-heart-transplantation-in-a-teenaged-patient
#13
Moritz Messner, Florian Hintringer, Silvana Müller, Marc Michael Zaruba, Nikolaos Bonaros, Herwig Antretter, Daniel Basic, Gerhard Pölzl
We report a case of catheter-based edge-to-edge mitral valve repair in a teenage male patient with non-ischaemic cardiomyopathy to improve pulmonary hypertension secondary to severe functional mitral regurgitation (FMR) to defer anticipated heart transplantation. A 19-year-old patient with previous history of fulminant myocarditis followed by markedly left ventricular dysfunction presented with severe mitral regurgitation 3 years after initial recovery. Slightly over time, deterioration of FMR was associated with gradual increase in pulmonary artery pressures despite optimal medical therapy...
January 18, 2018: ESC Heart Failure
https://www.readbyqxmd.com/read/29345195/mitochondrial-dysfunction-and-pulmonary-hypertension-cause-effect-or-both
#14
Jeffrey D Marshall, Isabel Bazan, Yi Zhang, Wassim H Fares, Patty J Lee
Pulmonary hypertension describes a heterogeneous disease defined by increased pulmonary artery pressures, and progressive increase in pulmonary vascular resistance due to pathologic remodeling of the pulmonary vasculature involving pulmonary endothelial cells, pericytes, and smooth muscle cells.  This process occurs under various conditions, and though these populations vary, the clinical manifestations are the same: progressive dyspnea, increases in right ventricular (RV) afterload and dysfunction, RV-pulmonary artery uncoupling, and right-sided heart failure with systemic circulatory collapse...
January 18, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29345112/low-nt-probnp-levels-in-overweight-and-obese-patients-do-not-rule-out-a-diagnosis-of-heart-failure-with-preserved-ejection-fraction
#15
Leo F Buckley, Justin M Canada, Marco G Del Buono, Salvatore Carbone, Cory R Trankle, Hayley Billingsley, Dinesh Kadariya, Ross Arena, Benjamin W Van Tassell, Antonio Abbate
BACKGROUND: Heart failure with preserved ejection fraction (HFpEF) is a heterogeneous syndrome that presents clinicians with a diagnostic challenge. The use of natriuretic peptides to exclude a diagnosis of HFpEF has been proposed. We sought to compare HFpEF patients with N-terminal pro-brain natriuretic peptide (NT-proBNP) level above and below the proposed cut-off. METHODS: Stable patients (n = 30) with left ventricular (LV) ejection fraction ≥ 50% were eligible if they had a diagnosis of HF according to the European Society of Cardiology diagnostic criteria...
January 18, 2018: ESC Heart Failure
https://www.readbyqxmd.com/read/29343586/a-case-of-cardiomyopathy-due-to-premature-ductus-arteriosus-closure-the-flip-side-of-paracetamol
#16
Ingrid Anne Mandy Schierz, Mario Giuffrè, Ettore Piro, Simona La Placa, Giovanni Corsello
Paracetamol (acetaminophen or N-acetyl-p-aminophenol) is considered a safe analgesic and antipyretic nonsteroidal antiinflammatory drug commonly used during pediatric ages and during pregnancy. We report on a term neonate with closed ductus arteriosus, severe cardiomyopathy, right ventricular dysfunction, and functional stenosis of pulmonary arteries at birth after maternal self-medication with paracetamol and consumption of polyphenol-rich foods in late pregnancy. This drug, especially when associated with other vasoconstrictors (such as polyphenols), interferes with prostaglandin metabolism, which seriously accentuates the intrauterine ductus arteriosus constriction and leads to pharmacologic adverse events...
January 17, 2018: Pediatrics
https://www.readbyqxmd.com/read/29343525/lack-of-remuscularization-following-transplantation-of-human-embryonic-stem-cell-derived-cardiovascular-progenitor-cells-in-infarcted-nonhuman-primates
#17
Keyang Zhu, Qiang Wu, Cheng Ni, Peng Zhang, Zhiwei Zhong, Yan Wu, Yingchao Wang, Yinchuan Xu, Minjian Kong, Haifeng Cheng, Zhihua Tao, Qian Yang, He Liang, Yun Jiang, Qingju Li, Jing Zhao, Jijun Huang, Fengjiang Zhang, Qi Chen, Yi Li, Jinghai Chen, Wei Zhu, Hong Yu, Jianyi Zhang, Huang-Tian Yang, Xinyang Hu, Jian'an Wang
Rationale: Human pluripotent stem cell-derived cardiovascular progenitor cells (hPSC-CVPCs) should be thoroughly investigated in large animal studies before testing in clinical trials. Objective: To clarify if hPSC-CVPCs can engraft for long time in the heart of primates after myo-cardial infarction (MI) and compare the effectiveness and safety of immunosuppression with cy-closporine alone or multiple-drug regimen (MDR) containing cyclosporine, methylprednisolone, and Simulect in cynomolgous monkeys that had received intramyocardial injections of 1×107 EGFP-expressing hPSC-CVPCs after MI...
January 17, 2018: Circulation Research
https://www.readbyqxmd.com/read/29343458/right-ventricular-fibrosis-and-dysfunction-actual-concepts-and-common-misconceptions
#18
REVIEW
Bakytbek Egemnazarov, Slaven Crnkovic, Bence M Nagy, Horst Olschewski, Grazyna Kwapiszewska
Fibrosis and remodeling of the right ventricle (RV) are associated with RV dysfunction and mortality of patients with pulmonary hypertension (PH) but it is unknown how much RV fibrosis contributes to RV dysfunction and mortality. RV fibrosis manifests as fibroblast accumulation and collagen deposition which may be excessive. Although extracellular matrix deposition leads to elevated ventricular stiffness, it is not known to which extent it affects RV function. Various animal models of pulmonary hypertension have been established to investigate the role of fibrosis in RV dysfunction and failure...
January 14, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29343025/-correlation-between-the-parameters-of-acoustic-cardiography-and-bnp-lvef-and-cardiac-function-grading-in-patients-with-chronic-heart-failure
#19
Q Xie, F W Zhang, M S Chen, Y X Zhang, L Q Ren, B Xing, D Y Li
Objective: To explore the correlation between the parameters of the new generation of Acoustic Cardiography and brain natriuretic peptide (BNP), left ventricular ejection fraction (LVEF) and cardiac function grading in the diagnosis of heart failure. Methods: One hundred and sixty-eight inpatients, who were hospitalized in Department of Cardiology, Haikou People's Hospital from May 2016 to July 2017, were enrolled as heart failure group, including NYHA class Ⅰ(n=29), NYHA class Ⅱ(n=40), NYHA class Ⅲ(n=64), NYHA class Ⅳ (n=35)...
January 2, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29342244/gli2-rescues-delays-in-brain-development-induced-by-kif3a-dysfunction
#20
Jia-Long Chen, Chia-Hsiang Chang, Jin-Wu Tsai
The primary cilium in neural stem cells plays distinct roles in different stages during cortical development. Ciliary dysfunctions in human (i.e., ciliopathy) cause developmental defects in multiple organs, including brain developmental delays, which lead to intellectual disabilities and cognitive deficits. However, effective treatment to this devastating developmental disorder is still lacking. Here, we first investigated the effects of ciliopathy on neural stem cells by knocking down Kif3a, a kinesin II motor required for ciliogenesis, in the neurogenic stage of cortical development by in utero electroporation of mouse embryos...
January 12, 2018: Cerebral Cortex
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