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https://www.readbyqxmd.com/read/29331652/salinomycin-induces-primary-chicken-cardiomyocytes-death-via-mitochondria-mediated-apoptosis
#1
Xiuge Gao, Yani Zheng, Xiangchun Ruan, Hui Ji, Lin Peng, Dawei Guo, Shanxiang Jiang
Salinomycin, as a polyether ionophore antibiotic, is extensively used as a feed additive against coccidiosis in poultry and as a growth promoter of ruminants worldwide. Owing to its narrow therapeutic index, numerous intoxication have been reported in target/non-target animals by overdosage, misuse or drug interactions as well as human who consumed salinomycin accidently. Salinomycin-induced cardiotoxicity in chicken and non-target animals is considered as a major contributor to animal death. In the current study, we aim to elucidate the underlying mechanism of its myocardial toxicity using primary chicken myocardial cell as an in vitro model...
January 10, 2018: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29331650/echocardiographic-patterns-of-postresuscitation-myocardial-dysfunction
#2
Kyoung-Chul Cha, Hyung Il Kim, Oh Hyun Kim, Yong Sung Cha, Hyun Kim, Kang Hyun Lee, Sung Oh Hwang
BACKGROUND: Postresuscitation myocardial dysfunction (PRMD) can develop after successful resuscitation from cardiac arrest. However, echocardiographic patterns of PRMD remain unknown. This study aimed to investigate PRMD manifestations with serial echocardiography during the post-cardiac arrest period. METHODS: We enrolled non-traumatic out-of-hospital cardiac arrest patients older than 19 years who underwent successful cardiopulmonary resuscitation (CPR). We excluded patients with myocardial infarction or pre-existing cardiac disease, including heart failure or myocardial disease...
January 11, 2018: Resuscitation
https://www.readbyqxmd.com/read/29331057/manifestations-and-mechanisms-of-myocardial-lipotoxicity-in-obesity
#3
Arthur C Sletten, Linda R Peterson, Jean E Schaffer
Environmental and socioeconomic changes over the past thirty years have contributed to a dramatic rise in the worldwide prevalence of obesity. Heart disease is among the most serious health risks of obesity, with increases in both atherosclerotic coronary heart disease and heart failure among obese individuals. In this review, we focus on primary myocardial alterations in obesity that include hypertrophic remodeling and diastolic dysfunction. Obesity-associated perturbations in myocardial and systemic lipid metabolism are important contributors to cardiovascular complications of obesity...
January 13, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29327516/cardiac-biomarkers-and-myocardial-dysfunction-in-septicemia
#4
Deep Chandh Raja, Sanjay Mehrotra, Avinash Agrawal, Abhishek Singh, Kamlesh Kumar Sawlani
Objectives: Cardiac biomarkers have been studied in sepsis in the past and various mechanisms for their rise have been elucidated. However their association with severity of sepsis, mortality and myocardial dysfunction warrants further studies. We have studied three different cardiac biomarkers- troponin T (trop T), creatine phosphokinase MB isoform (CPK MB) and NT pro brain natriuretic peptide (NT Pro BNP) in patients with septicemia. We have attempted to observe the levels of these biomarkers in sepsis, their individual abilities to predict the severity of sepsis, mortality and association with myocardial dysfunction noted in echocardiography...
December 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29327515/myocardial-dysfunction-in-sepsis-and-septic-shock
#5
Dilip R Karnad, Sanjith Saseedharan
No abstract text is available yet for this article.
December 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29325796/lcz696-sacubitril-valsartan-an-angiotensin-receptor-neprilysin-inhibitor-attenuates-cardiac-hypertrophy-fibrosis-and-vasculopathy-in-a-rat-model-of-chronic-kidney-disease
#6
Yasunori Suematsu, Wanghui Jing, Ane Nunes, Moti L Kashyap, Mahyar Khazaeli, Nosratola D Vaziri, Hamid Moradi
BACKGROUND: Chronic kidney disease (CKD) is associated with cardiac hypertrophy, fibrosis and increased risk of cardiovascular mortality. LCZ696 (Sacubitril/valsartan) is a promising agent which has shown significant potential in treatment of heart failure. We hypothesized that LCZ696 is more effective than valsartan alone in treatment of cardiovascular abnormalities associated with experimental CKD. METHODS AND RESULTS: Male Sprague Dawley rats underwent 5/6 nephrectomy and were subsequently randomized to no treatment (CKD), 30 mg/kg valsartan (VAL), or 60 mg/kg LCZ696 (LCZ)...
January 8, 2018: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/29325553/sitagliptin-improved-glucose-assimilation-in-detriment-of-fatty-acid-utilization-in-experimental-type-ii-diabetes-role-of-glp-1-isoforms-in-glut4-receptor-trafficking
#7
E Ramírez, B Picatoste, A González-Bris, M Oteo, F Cruz, A Caro-Vadillo, J Egido, J Tuñón, M A Morcillo, Ó Lorenzo
BACKGROUND: The distribution of glucose and fatty-acid transporters in the heart is crucial for energy consecution and myocardial function. In this sense, the glucagon-like peptide-1 (GLP-1) enhancer, sitagliptin, improves glucose homeostasis but it could also trigger direct cardioprotective actions, including regulation of energy substrate utilization. METHODS: Type-II diabetic GK (Goto-Kakizaki), sitagliptin-treated GK (10 mg/kg/day) and wistar rats (n = 10, each) underwent echocardiographic evaluation, and positron emission tomography scanning for [18F]-2-fluoro-2-deoxy-D-glucose (18FDG)...
January 11, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29325551/relationship-between-cardiac-microvascular-dysfunction-measured-with-82rubidium-pet-and-albuminuria-in-patients-with-diabetes-mellitus
#8
Louis Potier, Renata Chequer, Ronan Roussel, Kamel Mohammedi, Souad Sismail, Agnès Hartemann, Chloé Amouyal, Michel Marre, Dominique Le Guludec, Fabien Hyafil
BACKGROUND: Albuminuria is of one the strongest predictors of cardiovascular disease (CVD) in diabetes. Diabetes is associated with cardiac microvascular dysfunction (CMD), a powerful, independent prognostic factor for cardiac mortality. The aim of this study was to evaluate the relationship between CMD and microvascular complications in patients without known CVD. METHODS: In this monocentric study, myocardial flow reserve (MFR) was measured with cardiac 82Rubidium positron emission tomography (Rb-PET) in 311 patients referred to nuclear medicine department of Bichat University Hospital for screening of coronary artery disease from 2012 to 2014...
January 11, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29324494/myocardial-protection-by-glucose-insulin-potassium-in-moderate-to-high-risk-patients-undergoing-elective-on-pump-cardiac-surgery-a-randomized-controlled-trial
#9
Christoph Ellenberger, Tornike Sologashvili, Lukas Kreienbühl, Mustafa Cikirikcioglu, John Diaper, Marc Licker
BACKGROUND: Low cardiac output syndrome is a main cause of death after cardiac surgery. We sought to assess the impact of glucose-insulin-potassium (GIK) to enhance myocardial protection in moderate- to high-risk patients undergoing on-pump heart surgery. METHODS: A randomized controlled trial was performed in adult patients (Bernstein-Parsonnet score >7) scheduled for elective aortic valve replacement and/or coronary artery bypass surgery. Patients were randomized to GIK (20 IU of insulin, 10 mEq of potassium chloride in 50 mL of glucose 40%) or saline infusion given over 60 minutes on anesthetic induction...
January 9, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29323186/combination-of-high-fat-high-fructose-diet-and-low-dose-streptozotocin-to-model-long-term-type-2-diabetes-complications
#10
David André Barrière, Christophe Noll, Geneviève Roussy, Farah Lizotte, Anissa Kessai, Karyn Kirby, Karine Belleville, Nicolas Beaudet, Jean-Michel Longpré, André C Carpentier, Pedro Geraldes, Philippe Sarret
The epidemic of type 2 diabetes mellitus (T2DM) is fueled by added fructose consumption. Here, we thus combined high-fat/high-fructose diet, with multiple low-dose injections of streptozotocin (HF/HF/Stz) to emulate the long-term complications of T2DM. HF/HF/Stz rats, monitored over 56 weeks, exhibited metabolic dysfunctions associated with the different stages of the T2DM disease progression in humans: an early prediabetic phase characterized by an hyperinsulinemic period with modest dysglycemia, followed by a late stage of T2DM with frank hyperglycemia, normalization of insulinemia, marked dyslipidemia, hepatic fibrosis and pancreatic β-cell failure...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29322353/quercetin-exerts-cardiovascular-protective-effects-in-lps-induced-dysfunction-in-vivo-by-regulating-inflammatory-cytokine-expression-nf-%C3%AE%C2%BAb-phosphorylation-and-caspase-activity
#11
Xiqing Wei, Xiangli Meng, Yuxiang Yuan, Fengjuan Shen, Chengqiu Li, Jun Yang
Impaired myocardial contractile function, one of the well-documented features of sepsis, contributes greatly to the high rate of mortality. Quercetin is widely accepted as a potential antioxidant and free radical scavenger. Epidemiologic studies have suggested that an increase in the intake of dietary Quercetin can reduce the risk of cardiac disease. However, presently there is no report yet on the influence of Quercetin on LPS-induced myocardial dysfunction in vivo. Cardiovascular protective effects of Quercetin on LPS-induced sepsis in mice were measured after intragastric administration, using normal saline as a positive control...
January 10, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29316855/the-role-of-noninvasive-cardiovascular-testing-applied-clinical-nutrition-and-nutritional-supplements-in-the-prevention-and-treatment-of-coronary-heart-disease
#12
Mark Houston
Numerous clinical trials suggest that we have reached a limit in our ability to decrease the incidence of coronary heart disease (CHD) and cardiovascular disease (CVD) utilizing the traditional diagnostic evaluation, prevention and treatment strategies for the top five cardiovascular risk factors of hypertension, diabetes mellitus, dyslipidemia, obesity and smoking. About 80% of heart disease (heart attacks, angina, coronary heart disease and congestive heart failure) can be prevented by optimal nutrition, optimal exercise, optimal weight and body composition, mild alcohol intake and avoiding smoking...
January 1, 2018: Therapeutic Advances in Cardiovascular Disease
https://www.readbyqxmd.com/read/29315085/biopsy-confirmed-endothelial-cell-activation-in-patients-with-coronary-microvascular-dysfunction
#13
Hannes Lindemann, Ivana Petrovic, Stephan Hill, Anastasios Athanasiadis, Heiko Mahrholdt, Tim Schäufele, Karin Klingel, Udo Sechtem, Peter Ong
BACKGROUND: Patients with angina yet having unobstructed coronaries are found in ∼50% of cases undergoing invasive angiography. Coronary spasm and microvascular dysfunction can be responsible for the clinical presentation in ∼60% of cases. However, little is known about structural changes in the myocardium. The aim of this study was to describe findings in endomyocardial biopsies of symptomatic patients with unobstructed coronaries. PATIENTS AND METHODS: We retrospectively analyzed a cohort of 1416 consecutive patients who underwent endomyocardial biopsy sampling and coronary angiography between 2002 and 2016 for various clinical indications...
January 8, 2018: Coronary Artery Disease
https://www.readbyqxmd.com/read/29314656/mammalian-target-of-rapamycin-inhibition-attenuates-myocardial-ischaemia-reperfusion-injury-in-hypertrophic-heart
#14
Lei-Lei Ma, Xin Ma, Fei-Juan Kong, Jun-Jie Guo, Hong-Tao Shi, Jian-Bing Zhu, Yun-Zeng Zou, Jun-Bo Ge
Pathological cardiac hypertrophy aggravated myocardial infarction and is causally related to autophagy dysfunction and increased oxidative stress. Rapamycin is an inhibitor of serine/threonine kinase mammalian target of rapamycin (mTOR) involved in the regulation of autophagy as well as oxidative/nitrative stress. Here, we demonstrated that rapamycin ameliorates myocardial ischaemia reperfusion injury by rescuing the defective cytoprotective mechanisms in hypertrophic heart. Our results showed that chronic rapamycin treatment markedly reduced the phosphorylated mTOR and ribosomal protein S6 expression, but not Akt in both normal and aortic-banded mice...
January 4, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29314455/association-between-mean-systolic-and-diastolic-blood-pressure-throughout-the-follow-up-and-cardiovascular-events-in-acute-myocardial-infarction-patients-with-systolic-dysfunction-and-or-heart-failure-an-analysis-from-the-high-risk-myocardial-infarction-database
#15
João Pedro Ferreira, Kevin Duarte, Marc A Pfeffer, John J V McMurray, Bertram Pitt, Kenneth Dickstein, Faiez Zannad, Patrick Rossignol
BACKGROUND: Observational data have described the association of blood pressure (BP) with mortality as 'J-shaped', meaning that mortality rates increase below a certain BP threshold. We aimed to analyse the associations between BP and prognosis in a population of acute myocardial infarction (MI) patients with heart failure (HF) and/or systolic dysfunction. METHODS AND RESULTS: The datasets included in this pooling initiative are derived from four trials: CAPRICORN, EPHESUS, OPTIMAAL, and VALIANT...
January 4, 2018: European Journal of Heart Failure
https://www.readbyqxmd.com/read/29313903/cardiovascular-complications-after-non-cardiac-surgery
#16
REVIEW
D Sellers, C Srinivas, G Djaiani
Cardiac complications are common after non-cardiac surgery. Peri-operative myocardial infarction occurs in 3% of patients undergoing major surgery. Recently, however, our understanding of the epidemiology of these cardiac events has broadened to include myocardial injury after non-cardiac surgery, diagnosed by an asymptomatic troponin rise, which also carries a poor prognosis. We review the causation of myocardial injury after non-cardiac surgery, with potential for prevention and treatment, based on currently available international guidelines and landmark studies...
January 2018: Anaesthesia
https://www.readbyqxmd.com/read/29312702/risk-factors-of-pre-operational-aortic-rupture-in-acute-and-subacute-stanford-type-a-aortic-dissection-patients
#17
Zhuo-Dong Li, Yang Liu, Jiang Zhu, Jun Wang, Fang-Lin Lu, Lin Han, Zhi-Yun Xu
Background: Aortic rupture is one of the main causes of early death in acute and subacute Stanford type A aortic dissection (ATAAD) patients. This study aimed to analyze potential risk factors for pre-operational aortic rupture in ATAAD patients. Methods: We retrospectively reviewed aortic dissection cases treated between May 2013 and May 2016 in Changhai Hospital, Shanghai. A total of 329 patients with ATAAD were included in the final analysis, and 31 patients died of aortic rupture before surgery...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29311349/early-detection-of-subclinical-myocardial-damage-in-chronic-aortic-regurgitation-and-strategies-for-timely-treatment-of-asymptomatic-patients
#18
REVIEW
Joe K T Lee, Anna Franzone, Jonas Lanz, George C M Siontis, Stefan Stortecky, Christoph Gräni, Eva Roost, Stephan Windecker, Thomas Pilgrim
A series of hemodynamic and pathological responses occur in chronic aortic regurgitation, which eventually result in myocardial fibrosis and irreversible left ventricular dysfunction. According to guidelines, valvular surgery is recommended with the development of symptoms, left ventricular systolic dysfunction, or left ventricular dilatation. The optimal timing of surgical intervention has recently been questioned with documentation of irreversible myocardial damage resulting in incomplete left ventricular recovery and adverse clinical outcomes after surgery...
January 9, 2018: Circulation
https://www.readbyqxmd.com/read/29310471/optimal-course-of-treatment-in-acute-cardiogenic-shock-complicating-myocardial-infarction
#19
Sebastian Nuding, Karl Werdan, Roland Prondzinsky
About 5% of patients with myocardial infarction suffer from cardiogenic shock as a complication, with a mortality of ≥30%. Primary percutaneous coronary intervention as soon as possible is the most successful therapeutic approach. Prognosis depends not only on the extent of infarction, but also - and even more - on organ hypoperfusion with consequent development of multiple organ dysfunction syndrome. Areas covered: This review covers diagnostic, monitoring and treatment concepts relevant for caring patients with cardiogenic shock complicating myocardial infarction...
January 9, 2018: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/29306590/new-definition-criteria-of-myocardial-dysfunction-in-patients-with-liver-cirrhosis-a-speckle-tracking-and-tissue-doppler-imaging-study
#20
Roxana Cristina Rimbaş, Sorina Mihăilă Baldea, Ruxandra Drăgoi Galrinho Antunes Guerra, Simona Ionela Visoiu, Mihai Rimbaş, Corina Silvia Pop, Dragoş Vinereanu
There are no clear recommendations regarding cirrhotic cardiomyopathy (CC) evaluation in patients with pre-transplant liver cirrhosis. The roles of new methods, tissue Doppler imaging (TDI) and speckle tracking echocardiography (STE) in the diagnosis and prognosis of cirrhotic cardiomyopathy remain controversial. We investigated the utility of TDI/STE parameters in cirrhotic cardiomyopathy diagnosis and also in predicting mortality in patients with liver cirrhosis. Left/right ventricular function was studied using conventional TDI (velocities) and STE (strain/strain rate)...
January 3, 2018: Ultrasound in Medicine & Biology
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