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https://www.readbyqxmd.com/read/28938428/glp-1-receptor-activation-inhibits-palmitate-induced-apoptosis-via-ceramide-in-human-cardiac-progenitor-cells
#1
Anna Leonardini, Rossella D'Oria, Maria Angela Incalza, Cristina Caccioppoli, Valentina Andrulli Buccheri, Angelo Cignarelli, Domenico Paparella, Vito Margari, Annalisa Natalicchio, Sebastio Perrini, Francesco Giorgino, Luigi Laviola
Context: Increased apoptosis of cardiomyocytes and cardiac progenitor cells (CPCs) in response to saturated fatty acids (SFA) can lead to myocardial damage and dysfunction. Ceramides mediate lipotoxicity-induced apoptosis. GLP-1 receptor (GLP1R) agonists exert beneficial effects on cardiac cells in experimental models. Objective: To investigate the protective effects of GLP1R activation on SFA-mediated apoptotic death of human CPCs. Design: Human CPCs were isolated from cardiac appendages of non-diabetic donors and then exposed to palmitate with or without pre-treatment with the GLP1R agonist exendin-4...
August 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28936893/severe-hypertrophic-cardiomyopathy-in-a-patient-with-atypical-anderson-fabry-disease
#2
Daniele Masarone, Giovanni Duro, Santo Dellegrottaglie, Paolo Colomba, Marta Rubino, Annapaola Cirillo, Antonio Pisani, Martina Caiazza, Perry Mark Elliott, Paolo Calabrò, Giuseppe Pacileo, Giuseppe Limongelli
AIM: Anderson-Fabry disease (AFD) is a hereditary disorder caused by a deficiency in the lysosomal enzyme α-galactosidase A which causes dysfunctions in multiple organ systems. Cardiac manifestation includes left ventricular hypertrophy, thickening of the valves, conduction disturbances and in the late phase, extensive areas of myocardial fibrosis with increased risk of sudden cardiac death. Case example: A case of AFD with exclusive cardiac involvement is described. During follow-up, due to the high risk of life-threatening arrhythmic events, implantation of an implantable cardioverter defibrillator is performed...
September 22, 2017: Future Cardiology
https://www.readbyqxmd.com/read/28936580/use-of-cardiopulmonary-pump-support-during-coronary-artery-bypass-grafting-in-the-high-risk-a-meta-analysis
#3
A Yousif, D Addison, N Lakkis, T Rosengart, S S Virani, Y Birnbaum, M Alam
BACKGROUND: Data from randomized trials evaluating the efficacy of on- versus off-pump coronary artery bypass grafting remain inconclusive, particularly in high-risk populations. AIMS: The aim of this study is to compare the outcomes associated with on- versus off-pump coronary artery bypass grafting among high-risk patients. METHODS: We performed a meta-analysis of randomized control trials comparing on- versus off-pump coronary artery bypass grafting, focusing on high-risk populations...
September 21, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28935571/aggravated-post-infarct-heart-failure-in-type-2-diabetes-is-associated-with-impaired-mitophagy-and-exaggerated-inflammasome-activation
#4
Thota Durga Devi, Mohan Babu, Petri Mäkinen, Minna Kaikkonen, Merja Heinaniemi, Hanne Laakso, Elias Ylä-Herttuala, Lassi Rieppo, Timo Liimatainen, Nikolay Naumenko, Pasi Tavi, Seppo Ylä-Herttuala
Type 2 diabetes mellitus (T2DM) is a major risk factor for heart disease. Mortality rates following myocardial infarction (MI) are significantly increased in T2DM patients due to dysfunctional left ventricle (LV). However, molecular pathways underlying accelerated post-MI heart failure (HF) in T2DM remain unclear. We investigated the underlying mechanisms by inducing MI in a well-established model of T2DM and control mice. Cardiac imaging revealed a significantly decreased global LV ejection fraction (EF) in parallel with increased mortality post-MI in T2DM mice compared to controls...
September 18, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28935506/endothelial-specific-sirt3-deletion-impairs-glycolysis-and-angiogenesis-and-causes-diastolic-dysfunction
#5
Xiaochen He, Heng Zeng, Sean T Chen, Richard J Roman, Judy L Aschner, Sean Didion, Jian-Xiong Chen
Endothelial glycolysis plays a critical role in the regulation of angiogenesis. We investigated the role of Sirtuin 3 (SIRT3) on endothelial cell (EC) glycolytic metabolism, angiogenesis, and diastolic function. Our aim was to test the hypothesis that loss of SIRT3 in ECs impairs endothelial glycolytic metabolism and angiogenesis and contributes to myocardial capillary rarefaction and the development of diastolic dysfunction. Using SIRT3 deficient ECs, SIRT3 was found to regulate a metabolic switch between mitochondrial respiration and glycolysis...
September 18, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28935461/short-and-long-term-outcome-in-very-old-patients-with-st-elevation-myocardial-infarction-after-primary-percutaneous-coronary-intervention
#6
Roberta Sappa, Maria Teresa Grillo, Martino Cinquetti, Giulio Prati, Leonardo Spedicato, Gaetano Nucifora, Andrea Perkan, Davide Zanuttini, Gianfranco Sinagra, Alessandro Proclemer
BACKGROUND: Although octogenarians constitute a fast-growing portion of cardiovascular patients, few data are available on the outcome of patients aged ≥85 years with ST-Elevation Myocardial Infarction (STEMI). METHODS AND RESULTS: We analyzed 126 consecutive patients aged ≥85 years (age 88±2 years) with STEMI, undergoing primary percutaneous coronary intervention (pPCI) within 12 hours from symptoms onset. Long-term follow-up (median 898 days) was obtained for the 102 patients surviving the index-hospitalization...
September 13, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28934928/complexity-of-pathomechanisms-leading-to-diastolic-heart-failure-in-diabetes-mellitus-potential-field-for-therapeutic-interventions
#7
Michael Schwarzer, Michel Noutsias, Frank Spillmann, P Christian Schulze, Torsten Doenst, Carsten Tschöpe
Advanced glycation end products (AGE) have been implicated in diabetes associated complications. They have been suggested as potential mediators in the progression of diabetic heart failure and as a potential target for treatment. Brunvand et al. now provided evidence in that the suggested causal relationship between AGE and diastolic myocardial dysfunction cannot be confirmed in children with type 1 diabetes. The early signs of diastolic myocardial impairment were associated with higher BMI, but not with HbA1c levels...
September 21, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28933367/targeting-metabolic-modulation-and-mitochondrial-dysfunction-in-the-treatment-of-heart-failure
#8
REVIEW
Abbey Steggall, Ify R Mordi, Chim C Lang
Despite significant improvements in morbidity and mortality with current evidence-based pharmaceutical-based treatment of heart failure (HF) over the previous decades, the burden of HF remains high. An alternative approach is currently being developed, which targets myocardial energy efficiency and the dysfunction of the cardiac mitochondria. Emerging evidence suggests that the insufficient availability of ATP to the failing myocardium can be attributed to abnormalities in the myocardial utilisation of its substrates rather than an overall lack of substrate availability...
May 10, 2017: Diseases (Basel)
https://www.readbyqxmd.com/read/28931529/electrocardiographic-strain-pattern-is-associated-with-left-ventricular-concentric-remodeling-scar-and-mortality-over-10%C3%A2-years-the-multi-ethnic-study-of-atherosclerosis
#9
Yuko Y Inoue, Elsayed Z Soliman, Kihei Yoneyama, Bharath Ambale-Venkatesh, Colin O Wu, Rodney Sparapani, David A Bluemke, João A C Lima, Hiroshi Ashikaga
BACKGROUND: Both ECG strain pattern and QRS measured left ventricular (LV) hypertrophy criteria are associated with LV hypertrophy and have been used for risk stratification. However, the independent predictive value of ECG strain in apparently healthy individuals in predicting mortality and adverse cardiovascular events is unclear. METHODS AND RESULTS: MESA (Multi-Ethnic Study of Atherosclerosis) is a multicenter, prospective cohort of 6441 participants (mean age, 62 years; 54% women)...
September 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28929619/assessment-of-subclinical-right-ventricular-systolic-dysfunction-in-coal-miners-using-myocardial-isovolumic-acceleration
#10
Ozge Ozcan Abacıoglu, Mehmet Kaplan, Serkan Abacıoglu, Ala Quisi
OBJECTIVE: Several studies have been conducted regarding the effects of coal mining on the respiratory system. However, there is a lack of data concerning potential effects of coal mining on the cardiovascular system. In this study, we aimed to evaluate the potential subclinical right and left ventricular dysfunction in coal miners. METHODS: This single-center, prospective study included a total of 102 patients. Patient and control groups consisted of 54 coal miners and 48 healthy men, respectively...
September 2017: Echocardiography
https://www.readbyqxmd.com/read/28929246/a-numerical-study-of-the-hemodynamic-effect-of-the-aortic-valve-on-coronary-flow
#11
Shaily Wald, Alex Liberzon, Idit Avrahami
During diastole, coronary perfusion depends on the pressure drop between the myocardial tissue and the coronary origin located at the aortic root. This pressure difference is influenced by the flow field near the closing valve leaflets. Clinical evidence is conclusive that patients with severe aortic stenosis (AS) suffer from diastolic dysfunction during hyperemia, but show increased coronary blood flow (CBF) during rest. Transcatheter aortic valve implantation (TAVI) was shown to decrease rest CBF along with its main purpose of improving the aortic flow and reducing the risk of heart failure...
September 19, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28929112/imaging-diagnosis-of-right-ventricle-involvement-in-chagas-cardiomyopathy
#12
REVIEW
Minna M D Romano, Henrique T Moreira, André Schmidt, Benedito Carlos Maciel, José Antônio Marin-Neto
Right ventricle (RV) is considered a neglected chamber in cardiology and knowledge about its role in cardiac function was mostly focused on ventricular interdependence. However, progress on the understanding of myocardium diseases primarily involving the RV led to a better comprehension of its role in health and disease. In Chagas disease (CD), there is direct evidence from both basic and clinical research of profound structural RV abnormalities. However, clinical detection of these abnormalities is hindered by technical limitations of imaging diagnostic tools...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28928991/stress-cardiomyopathy-managed-with-extracorporeal-support-after-self-injection-of-epinephrine
#13
Bourenne Jeremy, Fresco Raphaëlle, Kerbaul François, Michelet Pierre, Gainnier Marc
A 28-year-old man was admitted to the ICU for self-injection of Epinephrine. This injection resulted in the rapid development of a catecholamine-induced cardiomyopathy (inverted Takotsubo) with a severe cardiogenic shock. The importance of ventricular dysfunction required the implementation of a temporary arteriovenous circulatory support until the recovery of myocardial stunning. This case allows redefining the role of circulatory assistance during cardiotropic agents intoxication.
2017: Case Reports in Critical Care
https://www.readbyqxmd.com/read/28928989/an-unusual-case-of-recurrent-hypersensitivity-reaction-associated-with-kounis-like-acute-coronary-syndrome
#14
Shanker Kundumadam, Vivek Reddy, Sagar Mallikethi Reddy, Pradeep Kathi, Aiden Abidov
There have been multiple reports of allergic reactions associated with acute coronary syndromes. This has been classically described as Kounis syndrome. We present an unusual case of 70-year-old male with multiple prior hypersensitivity reactions and history of coronary artery bypass grafting who presented recurrent episode of severe angioedema and anaphylaxis. He responded to epinephrine but subsequently developed a non-ST elevation myocardial infarction with worsening heart failure. Our case is unique in that, unlike classic Kounis syndrome, the acute coronary event in this case did not present concurrently with the allergic reaction; rather it took nearly 48 hours to present...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28928716/cushing-s-disease-subclinical-left-ventricular-systolic-and-diastolic-dysfunction-revealed-by-speckle-tracking-echocardiography-and-tissue-doppler-imaging
#15
Beata Uzie Bło-Życzkowska, Paweł Krzesinński, Przemysław Witek, Grzegorz Zielinński, Agnieszka Jurek, Grzegorz Gielerak, Andrzej Skrobowski
OBJECTIVE: Novel echocardiographic techniques, such as speckle tracking echocardiography (STE) and tissue Doppler imaging, are sensitive tools for assessing left ventricular (LV) performance. LV global longitudinal strain (GLS), assessed by STE, is a sensitive marker of myocardial systolic function. Cardiovascular complications in patients with Cushing's disease (CD) determine a higher mortality than that in an age- and gender-matched population. Cardiac systolic dysfunction may be detected in early stages by STE...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28927558/acute-leukemia-is-associated-with-cardiac-alterations-before-chemotherapy
#16
Bruna Morhy Borges Leal Assuncao, Mark D Handschumacher, Andrew M Brunner, Evin Yucel, Philipp E Bartko, Kai-Hung Cheng, Orlando Campos, Amir T Fathi, Timothy C Tan, Marielle Scherrer-Crosbie
BACKGROUND: Patients with acute leukemia (AL) have a higher rate of congestive heart failure than patients with other cancers. AL may predispose to cardiac dysfunction before chemotherapy because of high cytokine release or direct leukemic myocardial infiltration. The aims of this study were to evaluate whether AL is associated with abnormalities of myocardial structure and function before chemotherapy and to identify possible risk factors associated with these myocardial changes. METHODS: Using an echocardiographic database, 76 patients with AL and 76 patients without cancer matched for age, gender, hypertension, and the presence of diabetes were retrospectively selected...
September 15, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28924131/takotsubo-like-myocardial-dysfunction-in-a-patient-with-botulism
#17
Shuichi Tonomura, Yoshiaki Kakehi, Masatoshi Sato, Yuki Naito, Hisao Shimizu, Yasunobu Goto, Nobuyuki Takahashi
Botulinum toxin A (BTXA) can disrupt the neuromuscular and autonomic functions. We herein report a case of autonomic system dysfunction that manifested as Takotsubo-like myocardial dysfunction in a patient with botulism. Takotsubo syndrome results in acute cardiac insufficiency, another fatal complication of botulism in addition to respiratory muscle paralysis, particularly in patients with cardiovascular disease.
September 15, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28922718/tanshinone-iia-protects-against-chronic-intermittent-hypoxia-induced-myocardial-injury-via-activating-the-endothelin-1-pathway
#18
Na Wang, Yue Chang, Lingling Chen, Ya-Jing Guo, Ya-Shuo Zhao, Qiu-Hong Guo, En-Sheng Ji
Tanshinone IIA (Tan IIA) may exert significant protective effects against heart oxidative stress damage in obstructive sleep apnoea (OSA) syndrome. Chronic intermittent hypoxia (CIH)-triggered left ventricular dysfunction is used in a rat model to mimic CIH in OSA patients. 48 rats were randomly divided into three groups: normal control (NC) group, CIH group and CIH+Tan IIA group with 16 rats in each group. At the end of experiment (day 21), the blood pressure, Plasma ET-1 and NO content, hemodynamic indexes, heart histology, myocardial apoptosis as well as the expression of eNOS, ET-1, ETA receptor and ETB receptor were compared among different groups...
September 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28920862/enhanced-endothelium-epithelial-sodium-channel-signaling-prompts-left-ventricular-diastolic-dysfunction-in-obese-female-mice
#19
Guanghong Jia, Javad Habibi, Annayya R Aroor, Michael A Hill, Vincent G DeMarco, Li E Lee, Lixin Ma, Brady J Barron, Adam Whaley-Connell, James R Sowers
OBJECTIVE: Enhanced activation of cell specific mineralocorticoid receptors (MRs) in obesity plays a key role in the development of cardiovascular disease including cardiac diastolic dysfunction as a critical prognosticator. Our previous investigations demonstrated that selective endothelium MR activation promotes a maladaptive inflammatory response and fibrosis in cardiovascular tissue in female mice fed a western diet (WD), and this was associated with expression and activation of the epithelial sodium channel on the surface of endothelial cells (EnNaC)...
September 8, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28917022/epidemiology-pathogenesis-and-management-of-takotsubo-syndrome
#20
REVIEW
Shams Y-Hassan, Per Tornvall
Takotsubo syndrome is a recently recognized acute cardiac disease entity with a clinical presentation resembling that of an acute coronary syndrome. The typical takotsubo syndrome patient has a unique circumferential left (bi-) ventricular contraction abnormality profile that extends beyond a coronary artery supply territory and appears to follow the anatomical cardiac sympathetic innervation. The syndrome predominantly affects postmenopausal women and is often preceded by emotional or physical stress. Patients with predisposing factors such as malignancy and other chronic comorbidities are more prone to suffer from takotsubo syndrome...
September 15, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
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