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https://www.readbyqxmd.com/read/28222421/luteolin-enhances-sarcoplasmic-reticulum-ca2-atpase-activity-through-p38-mapk-signaling-thus-improving-rat-cardiac-function-after-ischemia-reperfusion
#1
Shasha Zhu, Tongda Xu, Yuanyuan Luo, Yingying Zhang, Haochen Xuan, Yanfeng Ma, Defeng Pan, Dongye Li, Hong Zhu
BACKGROUND/AIMS: A major challenge for current therapeutic strategies against ischemia/reperfusion (I/R) is the lack of effective drugs. Considering luteolin enhances the activity of sarcoplasmic reticulum Ca2+-ATPase (SERCA2a) to improve the systolic/diastolic function of rat hearts and cardiomyocytes during the I/R process, we studied the regulatory function of the p38 MAPK pathway in this protective mechanism. METHODS: Isolated cardiomyocytes and perfused hearts were separately divided into five groups and used to investigate I/R...
February 21, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28221991/detecting-clinically-meaningful-shape-clusters-in-medical-image-data-metrics-analysis-for-hierarchical-clustering-applied-to-healthy-and-pathological-aortic-arches
#2
Jan L Bruse, Maria A Zuluaga, Abbas Khushnood, Kristin McLeod, Hopewell N Ntsinjana, Tain-Yen Hsia, Maxime Sermesant, Xavier Pennec, Andrew M Taylor, Silvia Schievano
OBJECTIVE: Today's growing medical image databases call for novel processing tools to structure the bulk of data and extract clinically relevant information. Unsupervised hierarchical clustering may reveal clusters within anatomical shape data of patient populations as required for modern Precision Medicine strategies. Few studies have applied hierarchical clustering techniques to three-dimensional patient shape data and results depend heavily on the chosen clustering distance metrics and linkage functions...
February 16, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28221187/identification-associated-factors-and-prognosis-of-symptom-clusters-in-taiwanese-patients-with-heart-failure
#3
Tsuey-Yuan Huang, Debra K Moser, Shiow-Li Hwang
BACKGROUND: Patients with heart failure (HF) have multiple distressing symptoms that are associated with poor outcomes. These symptoms do not occur in isolation from each other but likely occur as discrete clusters that may prove helpful to clinicians trying to counsel patients about symptom monitoring and management. Defining common symptom clusters and determining the associations between symptom clusters and outcomes may improve patient management. PURPOSE: The aim of this study was to define symptom clusters and their association with event-free survival in terms of cardiac hospitalization and all-cause mortality in patients with HF...
February 17, 2017: Journal of Nursing Research: JNR
https://www.readbyqxmd.com/read/28220624/cardio-protective-effects-of-pectin-insulin-patch-in-streptozotocin-induced-diabetic-rats-beneficial-effects-of-insulin-patch
#4
Ntethelelo Sibiya, Phikelelani Ngubane, Musa Mabandla
PURPOSE: Cardiovascular complications are amongst the leading causes of morbidity and mortality in diabetes mellitus. Despite the beneficial effects of subcutaneous insulin administration, reports suggest that the therapy itself precipitates cardiovascular risks due to the high insulin concentration administered. It is therefore necessary to seek alternative insulin administration routes that may bypass the undesirable effects associated with high plasma insulin concentration. Accordingly, the study investigated the effect of a novel transdermal pectin-insulin patch on selected cardiovascular function markers in diabetes...
February 20, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/28220351/two-dimensional-speckle-tracking-echocardiography-demonstrates-no-effect-of-active-acromegaly-on-left-ventricular-strain
#5
I C M Volschan, L Kasuki, C M S Silva, M L Alcantara, R M Saraiva, S S Xavier, M R Gadelha
BACKGROUND: Speckle tracking echocardiography (STE) allows for the study of myocardial strain (ε), a marker of early and subclinical ventricular systolic dysfunction. Cardiac disease may be present in patients with acromegaly; however, STE has never been used to evaluate these patients. OBJECTIVE: To evaluate left ventricular (LV) global longitudinal strain in patients with active acromegaly with normal LV systolic function. DESIGN: Cross-sectional clinical study...
February 20, 2017: Pituitary
https://www.readbyqxmd.com/read/28220144/results-of-late-gadolinium-enhancement-in-children-affected-by-dilated-cardiomyopathy
#6
Giuseppe Muscogiuri, Paolo Ciliberti, Domenico Mastrodicasa, Marcello Chinali, Gabriele Rinelli, Teresa Pia Santangelo, Carmela Napolitano, Benedetta Leonardi, Aurelio Secinaro
BACKGROUND: Little is known about the clinical value of late gadolinium enhancement (LGE), in children affected by dilated cardiomyopathy (DCM). MATERIALS AND METHODS: We retrospectively evaluated 15 patients (8 ± 6 years, 6 males) with diagnosis of DCM who underwent cardiac magnetic resonance since 2014. All scans were performed with a 1.5 T system (Aera, Siemens). Study protocol included cine steady-state free precession sequences, followed by administration of 0...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28220117/the-tumorigenicity-of-multipotent-adult-germline-stem-cells-transplanted-into-the-heart-is-affected-by-natural-killer-cells-and-by-cyclosporine-a-independent-of-its-immunosuppressive-effects
#7
Daniela Hübscher, Diana Kaiser, Leslie Elsner, Sebastian Monecke, Ralf Dressel, Kaomei Guan
Transplantation of stem cells represents an upcoming therapy for many degenerative diseases. For clinical use, transplantation of pluripotent stem cell-derived cells should lead to integration of functional grafts without immune rejection or teratoma formation. Our previous studies showed that the risk of teratoma formation is highly influenced by the immune system of the recipients. In this study, we have observed a higher teratoma formation rate when undifferentiated so-called multipotent adult germline stem cells (maGSCs) were transplanted into the heart of T, B, and natural killer (NK) cell-deficient RAG2(-/-)γc(-/-) mice than in RAG2(-/-) mice, which still have NK cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28219980/activation-of-neuronal-endothelin-b-receptors-mediates-pressor-response-through-alpha-1-adrenergic-receptors
#8
Bryan K Becker, Joshua S Speed, Mackenzie Powell, David M Pollock
Abnormalities in activity of the endothelin (ET) system have been widely reported in a number of cardiovascular disease states such as hypertension and heart failure. Although the vascular responses to ET are well established, the interaction between ET and other important modulators of blood pressure, such as the sympathetic nervous system, are less understood. Previous reports implicate ET signaling through ET type B (ETB) receptors in increasing neuronal activity. Therefore, we hypothesized that activation of ETB receptors on sympathetic nerves would increase blood pressure through an adrenergic-mediated mechanism...
February 2017: Physiological Reports
https://www.readbyqxmd.com/read/28219917/isosorbide-dinitrate-with-or-without-hydralazine-does-not-reduce-wave-reflections-left-ventricular-hypertrophy-or-myocardial-fibrosis-in-patients-with-heart-failure-with-preserved-ejection-fraction
#9
Payman Zamani, Scott Akers, Haideliza Soto-Calderon, Melissa Beraun, Maheswara R Koppula, Swapna Varakantam, Deepa Rawat, Prithvi Shiva-Kumar, Philip G Haines, Jesse Chittams, Raymond R Townsend, Walter R Witschey, Patrick Segers, Julio A Chirinos
BACKGROUND: Wave reflections, which are increased in patients with heart failure with preserved ejection fraction, impair diastolic function and promote pathologic myocardial remodeling. Organic nitrates reduce wave reflections acutely, but whether this is sustained chronically or affected by hydralazine coadministration is unknown. METHODS AND RESULTS: We randomized 44 patients with heart failure with preserved ejection fraction in a double-blinded fashion to isosorbide dinitrate (ISDN; n=13), ISDN+hydralazine (ISDN+hydral; n=15), or placebo (n=16) for 6 months...
February 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28219912/anticoagulant-related-nephropathy-in-a-patient-with-iga-nephropathy
#10
Mário Góis, Ariana Azevedo, Fernanda Carvalho, Fernando Nolasco
Anticoagulant-related nephropathy is a type of acute kidney injury caused by overcoagulation. We describe a case of an 84-year-old man with arterial hypertension, coronary heart disease and atrial fibrillation treated with acenocoumarol, who presented with haematoproteinuria and acute kidney injury during a phase of excessive anticoagulation. In addition to IgA nephropathy, renal biopsy also revealed acute tubular necrosis, red blood cell casts and positive iron staining in tubular cells. After this acute episode, renal function improved and proteinuria decreased below the nephrotic range...
February 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28219848/bioelectronic-neuromodulation-of-the-paravertebral-cardiac-efferent-sympathetic-outflow-and-its-effect-on-ventricular-electrical-indices
#11
Una Buckley, Ray W Chui, Pradeep S Rajendran, Tina Vrabec, Kalyanam Shivkumar, Jeffrey L Ardell
INTRODUCTION: Neuromodulation of the paravertebral ganglia, using symmetric voltage controlled kilohertz frequency alternating current (KHFAC), has the potential to be a reversible alternative to surgical intervention in patients with refractory ventricular arrhythmias. KHFAC creates scalable focal inhibition of action potential conduction. OBJECTIVE: To evaluate the efficacy of KHFAC, when applied to T1-T2 paravertebral chain, to mitigate sympathetic outflow to the heart...
February 17, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28219794/atrial-fibrillation-in-hypertrophic-cardiomyopathy-a-turning-point-towards-increased-morbidity-and-mortality
#12
Thomas Zegkos, Georgios K Efthimiadis, Despoina G Parcharidou, Thomas D Gossios, Georgios Giannakoulas, Dimitris Ntelios, Antonis Ziakas, Stelios Paraskevaidis, Haralambos I Karvounis
BACKGROUND: Atrial fibrillation (AF) is the most common arrhythmic event in patients with hypertrophic cardiomyopathy (HCM). The aim of this study was to identify the clinical and the prognostic impact of the arrhythmia on a large cohort of patients with HCM. METHODS: The echocardiographic and clinical correlates, the predictors of AF and thromboembolic stroke and the prognostic significance of the arrhythmia were evaluated in 509 patients with an established diagnosis of HCM...
February 17, 2017: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/28219580/use-of-anti-thymocyte-globulin-for-induction-therapy-in-cardiac-transplantation-a-review
#13
V Ruan, L S C Czer, M Awad, M Kittleson, J Patel, F Arabia, F Esmailian, D Ramzy, J Chung, M De Robertis, A Trento, J A Kobashigawa
The most common causes of death after heart transplantation (HTx) include acute rejection and multi-organ failure in the early period and malignancy and cardiac allograft vasculopathy (CAV) in the late period. Polyclonal antibody preparations such as rabbit anti-thymocyte globulin (ATG) may reduce early acute rejection and the later occurrence of CAV after HTx. ATG therapy depletes T cells, modulates adhesion and cell-signaling molecules, interferes with dendritic cell function, and induces B-cell apoptosis and regulatory and natural killer T-cell expansion...
March 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28219356/bacopa-monnieri-extract-increases-rat-coronary-flow-and-protects-against-myocardial-ischemia-reperfusion-injury
#14
Sirintorn Srimachai, Sylvie Devaux, Celine Demougeot, Sarawut Kumphune, Nina D Ullrich, Ernst Niggli, Kornkanok Ingkaninan, Natakorn Kamkaew, C Norman Scholfield, Sompol Tapechum, Krongkarn Chootip
BACKGROUND: This study explored Bacopa monnieri, a medicinal Ayurvedic herb, as a cardioprotectant against ischemia/reperfusion injury using cardiac function and coronary flow as end-points. METHODS: In normal isolated rat hearts, coronary flow, left ventricular developed pressure, heart rate, and functional recovery were measured using the Langendorff preparation. Hearts were perfused with either (i) Krebs-Henseleit (normal) solution, (control), or with 30, 100 μg/ml B...
February 20, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28219103/digoxin-induces-cardiac-hypertrophy-without-negative-effects-on-cardiac-function-and-physical-performance-in-trained-normotensive-rats
#15
Claodete Hasselstrom Neves, Ramires Alsamir Tibana, Jonato Prestes, Fabricio Azevedo Voltarelli, Andreo Fernando Aguiar, Gustavo Augusto Ferreira Mota, Sergio Luiz Borges de Sousa, Andre Soares Leopoldo, Ana Paula Lima Leopoldo, Andre Mueller, Danilo Henrique Aguiar, James Wilfred Navalta, Mario Mateus Sugizaki
Cardiotonic drugs and exercise training promote cardiac inotropic effects, which may affect training-induced cardiac adaptations. This study investigated the effects of long-term administration of digoxin on heart structure and function, and physical performance of rats submitted to high-intensity interval training (HIIT). Male Wistar rats, 60 days old, were divided into control (C), digoxin (DIGO), trained (T), and trained with digoxin (TDIGO). Digoxin was administered by gavage (30 µg/kg/day) for 75 days...
February 20, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28219095/kaempferol-attenuates-cardiac-hypertrophy-via-regulation-of-ask1-mapk-signaling-pathway-and-oxidative-stress
#16
Hong Feng, Jianlei Cao, Guangyu Zhang, Yanggan Wang
Kaempferol has been demonstrated to provide benefits for the treatment of atherosclerosis, coronary heart disease, hyperlipidemia, and diabetes through its antioxidant and anti-inflammatory properties. However, its role in cardiac hypertrophy remains to be elucidated. The aim of our study was to investigate the effects of kaempferol on cardiac hypertrophy and the underlying mechanism. Mice subjected to aorta banding were treated with or without kaempferol (100 mg/kg/d, p. o.) for 6 weeks. Echocardiography was performed to evaluate cardiac function...
February 20, 2017: Planta Medica
https://www.readbyqxmd.com/read/28218659/effects-of-remote-ischemic-preconditioning-on-heme-oxygenase-1-expression-and-cutaneous-wound-repair
#17
Niels A J Cremers, Kimberley E Wever, Ronald J Wong, René E M van Rheden, Eline A Vermeij, Gooitzen M van Dam, Carine E Carels, Ditte M S Lundvig, Frank A D T G Wagener
Skin wounds may lead to scar formation and impaired functionality. Remote ischemic preconditioning (RIPC) can induce the anti-inflammatory enzyme heme oxygenase-1 (HO-1) and protect against tissue injury. We aim to improve cutaneous wound repair by RIPC treatment via induction of HO-1. RIPC was applied to HO-1-luc transgenic mice and HO-1 promoter activity and mRNA expression in skin and several other organs were determined in real-time. In parallel, RIPC was applied directly or 24h prior to excisional wounding in mice to investigate the early and late protective effects of RIPC on cutaneous wound repair, respectively...
February 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28218210/optimal-timing-of-surgical-revascularization-for-myocardial-infarction-and-left-ventricular-dysfunction
#18
Rong Wang, Nan Cheng, Cang-Song Xiao, Yang Wu, Xiao-Yong Sai, Zhi-Yun Gong, Yao Wang, Chang-Qing Gao
BACKGROUND: The optimal timing of surgical revascularization for patients presenting with ST-segment elevation myocardial infarction (STEMI) and impaired left ventricular function is not well established. This study aimed to examine the timing of surgical revascularization after STEMI in patients with ischemic heart disease and left ventricular dysfunction (LVD) by comparing early and late results. METHODS: From January 2003 to December 2013, there were 2276 patients undergoing isolated coronary artery bypass grafting (CABG) in our institution...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28217832/gestational-protein-restriction-study-of-the-probable-effects-on-cardiac-muscle-structure-and-function-in-adult-rats
#19
Mona G Amer, Nader M Mohamed, Aly A M Shaalan
Intrauterine growth restriction (IUGR) has been linked to heart disease in adulthood. This study aimed to examine the effect of gestational protein restriction during fetal and early postnatal life on the cardiac muscle structure and function in adult offspring. Pregnant female rats were randomly divided into two dietary groups: normal-protein diet (NP) and low-protein diet (LP). Fifteen male offspring from each group were included in the study. Offspring body weights were recorded at birth and monthly from weaning until 24 weeks of age while systolic blood pressure was measured weekly...
February 20, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28217516/long-term-cardiac-valvulopathy-safety-of-cabergoline-in-prolactinoma
#20
Shruti Khare, Anurag R Lila, Rishikesh Patil, Milind Phadke, Prafulla Kerkar, Tushar Bandgar, Nalini S Shah
BACKGROUND: Clinical relevance of association of cabergoline use for hyperprolactinemia and cardiac valvulopathy remains unclear. OBJECTIVE: The aim of the study was to determine the prevalence of valvular heart abnormalities in patients taking cabergoline for the treatment of prolactinoma and to explore any associations with the cumulative dose of drug used. DESIGN: A cross-sectional echocardiographic study was performed in patients who were receiving cabergoline therapy for prolactinoma...
January 2017: Indian Journal of Endocrinology and Metabolism
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