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inflammation and myocardial infarction

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https://www.readbyqxmd.com/read/29146277/lowering-ldl-cholesterol-reduces-cardiovascular-risk-independently-of-presence-of-inflammation
#1
Benjamin C Storey, Natalie Staplin, Richard Haynes, Christina Reith, Jonathan Emberson, William G Herrington, David C Wheeler, Robert Walker, Bengt Fellström, Christoph Wanner, Martin J Landray, Colin Baigent
Markers of inflammation, including plasma C-reactive protein (CRP), are associated with an increased risk of cardiovascular disease, and it has been suggested that this association is causal. However, the relationship between inflammation and cardiovascular disease has not been extensively studied in patients with chronic kidney disease. To evaluate this, we used data from the Study of Heart and Renal Protection (SHARP) to assess associations between circulating CRP and LDL cholesterol levels and the risk of vascular and non-vascular outcomes...
November 14, 2017: Kidney International
https://www.readbyqxmd.com/read/29146124/relationship-of-c-reactive-protein-reduction-to-cardiovascular-event-reduction-following-treatment-with-canakinumab-a-secondary-analysis-from-the-cantos-randomised-controlled-trial
#2
Paul M Ridker, Jean G MacFadyen, Brendan M Everett, Peter Libby, Tom Thuren, Robert J Glynn
BACKGROUND: Canakinumab, a monoclonal antibody targeting interleukin-1β, reduces inflammation and cardiovascular event rates with no effect on lipid concentrations. However, it is uncertain which patient groups benefit the most from treatment and whether reductions in the inflammatory biomarker high-sensitivity C-reactive protein (hsCRP) correlate with clinical benefits for individual patients. METHODS: The Canakinumab Anti-Inflammatory Thrombosis Outcomes Study (CANTOS) used computer-generated codes to randomly allocate 10 061 men and women with a history of myocardial infarction to placebo or one of three doses of canakinumab (50 mg, 150 mg, or 300 mg) given subcutaneously once every 3 months...
November 13, 2017: Lancet
https://www.readbyqxmd.com/read/29136949/minocycline-improves-cardiac-function-after-myocardial-infarction-in-rats-by-inhibiting-activation-of-parp-1
#3
Hua Zhao, Jianjun Zhang, Gang Hong
To investigate whether Minocycline can protect myocardial cells after myocardial infarction and improve myocardial remodeling through inhibiting PARP-1 activity, thus improving cardiac function. 50 male Wistar rats aged 4 months were used to establish the myocardial infarction model. The experimental rats underwent the echocardiography at 3d, 14d and 28d after operation. After 28days, the rats were executed and the myocardial tissues in the infarct-related zone were treated with immumohistochemical staining and molecular biology detection...
November 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29134121/omega-3-fatty-acids-in-atherosclerosis-and-coronary-artery-disease
#4
REVIEW
Magnus Bäck
Omega-3 polyunsaturated fatty acids have emerged as possible protective factors associated with a decreased risk for myocardial infarction in populations with a high marine food intake, which may relate to effects on lipid metabolism, thrombosis and inflammation. Omega-3 fatty acids decrease triglyceride levels and also compete as substrates for enzymes involved in the biosynthesis of lipid mediators. The balance between omega-3-derived specialized proresolving mediators and pro-inflammatory lipid mediators from arachidonic acid metabolism can be measured as the resolvin-to-leukotriene ratio, which has been shown to predict subclinical atherosclerosis...
November 2017: Future Science OA
https://www.readbyqxmd.com/read/29133215/myocardial-infarction-and-gut-microbiota-an-incidental-connection
#5
REVIEW
Sepideh Zununi Vahed, Abolfazl Barzegari, Marisol Zuluaga, Didier Letourneur, Graciela Pavon-Djavid
Myocardial infarction (MI) is the main cause of cardiovascular crises that entails serious concerns in mortality, morbidity, and cost to the society. The main therapeutic goal of modern cardiology is to develop novel approaches to minimize inflammation, myocardial necrosis/apoptosis, and enhance cardiac repair after MI. Though MI can be affected by genetic and environmental factors, the search for targeting lifestyle factors has been of greater interest. One such potential factor is the microbiota, the human intestinal microbial community...
November 10, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29131079/are-inflammatory-cytokines-associated-with-pain-during-acute-myocardial-infarction
#6
Laurin Imholz, Rebecca E Meister-Langraf, Mary Princip, Michaela Fux, Ulrich Schnyder, Jürgen Barth, Hansjörg Znoj, Jean-Paul Schmid, Roland von Känel
OBJECTIVE: Pain and inflammation during acute myocardial infarction (AMI) have been associated with the development of posttraumatic stress disorder and may also impact negatively on somatic outcome. We investigated the relationship between pain during AMI and levels of circulating proinflammatory (tumor necrosis factor [TNF]-α, interleukin [IL]-6) and anti-inflammatory (IL-33 and tissue growth factor [TGF]-β1) cytokines. METHODS: Data were collected as part of the Myocardial Infarction - Stress Prevention Intervention (MI-SPRINT) study...
November 4, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29130930/leukocyte-rhoa-exchange-factor-arhgef1-mediates-vascular-inflammation-and-atherosclerosis
#7
Maria Luigia Carbone, Gilliane Chadeuf, Sandrine Heurtebise-Chrétien, Xavier Prieur, Thibault Quillard, Yann Goueffic, Nathalie Vaillant, Marc Rio, Laure Castan, Maxim Durand, Céline Baron-Menguy, Julien Aureille, Juliette Desfrançois, Angela Tesse, Raul M Torres, Gervaise Loirand
Abnormal activity of the renin-angiotensin-aldosterone system plays a causal role in the development of hypertension, atherosclerosis, and associated cardiovascular events such as myocardial infarction, stroke, and heart failure. As both a vasoconstrictor and a proinflammatory mediator, angiotensin II (Ang II) is considered a potential link between hypertension and atherosclerosis. However, a role for Ang II-induced inflammation in atherosclerosis has not been clearly established, and the molecular mechanisms and intracellular signaling pathways involved are not known...
November 13, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29126756/-vascular-dysfunction-in-obstructive-sleep-apnoea-implication-of-microparticules
#8
REVIEW
W Trzepizur, P Priou, N Meslier, T Urban, M C Martínez, R Andriantsitohaina, F Gagnadoux
Obstructive sleep apnea (OSA) is associated with increased cardiovascular diseases, including myocardial infarction and stroke and promotes cardiovascular risk factors including diabetes and hypertension. OSA has also been proposed to have a direct proatherogenic effects. Recent studies have investigated the role of microparticles (MPs) in the atherogenic process. MPs are small plasma membrane vesicles that can be released by a variety of vascular or blood cells and that contain membrane and cytosolic elements...
November 7, 2017: Revue de Pneumologie Clinique
https://www.readbyqxmd.com/read/29125794/sr-b1-a-unique-multifunctional-receptor-for-cholesterol-influx-and-efflux
#9
Wen-Jun Shen, Salman Azhar, Fredric B Kraemer
The scavenger receptor, class B type 1 (SR-B1), is a multiligand membrane receptor protein that functions as a physiologically relevant high-density lipoprotein (HDL) receptor whose primary role is to mediate selective uptake or influx of HDL-derived cholesteryl esters into cells and tissues. SR-B1 also facilitates the efflux of cholesterol from peripheral tissues, including macrophages, back to liver. As a regulator of plasma membrane cholesterol content, SR-B1 promotes the uptake of lipid soluble vitamins as well as viral entry into host cells...
November 9, 2017: Annual Review of Physiology
https://www.readbyqxmd.com/read/29120671/erythropoietin-reduces-collagen-deposition-after-myocardial-infarction-but-does-not-improve-cardiac-function
#10
Fernanda G Pessoa, Charles Mady, Keila C B Fonseca, Adriana M Oliveira-Fonoff, Vera M C Salemi, Mauricio R Jordao, Fabio Fernandes, Felix J A Ramires
Myocardial remodeling includes inappropriate collagen deposition in the interstitium. Erythropoietin (EPO) may have cardioprotective effects. We aimed to assess the role of EPO on myocardial remodeling during the chronic phase. We studied 60 Wistar rats divided into Control (CT), Control+EPO (CT+EPO), Infarcted+EPO (MI+EPO), and Infarcted (MI). The interstitial collagen volume fraction (ICVF) was quantified. Echocardiography was performed. We quantified ADMA and glutathione by ELISA, and RT-PCR to assess apoptosis and inflammation...
November 9, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/29115503/cardioprotective-effects-of-anisodamine-against-myocardial-ischemia-reperfusion-injury-through-the-inhibition-of-oxidative-stress-inflammation-and-apoptosis
#11
Bao-Ju Yao, Xiao-Qing He, Yu-Hui Lin, Wen-Jun Dai
The aim of the present study was to investigate the cardioprotective effects of anisodamine against myocardial ischemia/reperfusion (I/R) injury and the molecular mechanisms involved. The present results demonstrated that anisodamine attenuated myocardial infarct sizes, decreased the levels of creatine kinase and lactate dehydrogenase, whereas it increased the left ventricular (LV) systolic pressure, the LV end‑diastolic pressure, and the LV pressure maximum rising and falling rates in a myocardial I/R rat model...
November 8, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29110146/atherosclerosis-periodontal-disease-and-treatment-with-resolvins
#12
REVIEW
James A Hamilton, Hatice Hasturk, Alpdogan Kantarci, Charles N Serhan, Thomas Van Dyke
PURPOSE OF REVIEW: This review aims to discuss the existing evidence on the link between atherosclerosis and periodontitis by particularly presenting new findings that link the pathology and therapy of these diseases. Acute vascular ischemic events that can lead to stroke or myocardial infarction are initiated by inflammatory processes leading to rupture or erosion of plaques susceptible to thrombosis ("high risk" or "vulnerable"). These are highly inflamed plaques residing in the media and adventitia that may not be detected by angiography measurments of luminal narrowing...
November 6, 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/29109595/the-role-of-hematological-indices-in-patients-with-acute-coronary-syndrome
#13
REVIEW
Jan Budzianowski, Konrad Pieszko, Paweł Burchardt, Janusz Rzeźniczak, Jarosław Hiczkiewicz
An increased systemic and local inflammation plays a key role in the pathophysiology of acute coronary syndrome (ACS). This review will discuss the role of hematological indices: white blood cells (WBC), neutrophil to lymphocyte ratio (NLR), red cell distribution width (RDW), and platelet indices, that is, platelet to lymphocyte ratio (PLR), mean platelet volume (MPV), and platelet distribution width (PDW) in the case of ACS. In recent years, a strong interest has been drawn to these indices, given that they may provide independent information on pathophysiology, risk stratification, and optimal management...
2017: Disease Markers
https://www.readbyqxmd.com/read/29106401/irf3-and-type-i-interferons-fuel-a-fatal-response-to-myocardial-infarction
#14
Kevin R King, Aaron D Aguirre, Yu-Xiang Ye, Yuan Sun, Jason D Roh, Richard P Ng, Rainer H Kohler, Sean P Arlauckas, Yoshiko Iwamoto, Andrej Savol, Ruslan I Sadreyev, Mark Kelly, Timothy P Fitzgibbons, Katherine A Fitzgerald, Timothy Mitchison, Peter Libby, Matthias Nahrendorf, Ralph Weissleder
Interferon regulatory factor 3 (IRF3) and type I interferons (IFNs) protect against infections and cancer, but excessive IRF3 activation and type I IFN production cause autoinflammatory conditions such as Aicardi-Goutières syndrome and STING-associated vasculopathy of infancy (SAVI). Myocardial infarction (MI) elicits inflammation, but the dominant molecular drivers of MI-associated inflammation remain unclear. Here we show that ischemic cell death and uptake of cell debris by macrophages in the heart fuel a fatal response to MI by activating IRF3 and type I IFN production...
November 6, 2017: Nature Medicine
https://www.readbyqxmd.com/read/29098797/acylated-ghrelin-treatment-normalizes-skeletal-muscle-mitochondrial-oxidative-capacity-and-akt-phosphorylation-in-rat-chronic-heart-failure
#15
Rocco Barazzoni, Gianluca Gortan Cappellari, Sandra Palus, Pierandrea Vinci, Giulia Ruozi, Michela Zanetti, Annamaria Semolic, Nicole Ebner, Stephan von Heahling, Gianfranco Sinagra, Mauro Giacca, Jochen Springer
BACKGROUND: Chronic heart failure (CHF) is associated with skeletal muscle abnormalities contributing to exercise intolerance, muscle loss, and negative impact on patient prognosis. A primary role has been proposed for mitochondrial dysfunction, which may be induced by systemic and tissue inflammation and further contribute to low insulin signalling. The acylated form of the gastric hormone ghrelin (AG) may improve mitochondrial oxidative capacity and insulin signalling in both healthy and diseased rodent models...
November 3, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/29097390/differential-impact-of-serial-measurement-of-nonplatelet-thromboxane-generation-on-long-term-outcome-after-cardiac-surgery
#16
Nikolaos Kakouros, Tyler J Gluckman, John V Conte, Thomas S Kickler, Katherine Laws, Bruce A Barton, Jeffrey J Rade
BACKGROUND: Systemic thromboxane generation, not suppressible by standard aspirin therapy and likely arising from nonplatelet sources, increases the risk of atherothrombosis and death in patients with cardiovascular disease. In the RIGOR (Reduction in Graft Occlusion Rates) study, greater nonplatelet thromboxane generation occurred early compared with late after coronary artery bypass graft surgery, although only the latter correlated with graft failure. We hypothesize that a similar differential association exists between nonplatelet thromboxane generation and long-term clinical outcome...
November 2, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29082546/a-giant-pseudoaneurysm-of-coronary-artery-in-a-young-patient-with-beh%C3%A3-et-s-disease
#17
Lihong Pu, Rongjuan Li, Jinjie Xie, Guowen Liu, Ya Yang
As an uncommon multisystem inflammatory disease, Behçet's syndrome is characterized by mouth and genital ulcers, skin lesions, and eye inflammation, which may also affect joints, blood vessels, central nervous system, or digestive tract. However, the inflammation of coronary artery is relatively rare. We thereby reported a young male of Behçet's syndrome presenting left anterior descending artery pseudoaneurysm with myocardial infarction. Surgical resection was performed with coronary bypass grafting.
October 29, 2017: Echocardiography
https://www.readbyqxmd.com/read/29074341/the-clinical-significance-of-endocardial-endothelial-dysfunction
#18
REVIEW
Sonja Smiljic
Endocardial endothelium (EE) is essential in the embryonic development of the heart, the optimal contractility and rhythm as well as the remodeling of the heart. Endocardial endothelium affect the contractility of cardiomyocytes through paracrine signaling substances such as nitric oxide (NO), endothelin (ET-1), prostaglandins (PGI2, PGF2, PGE2) and angiotensin II (ANG II). Typical lesions of endocardial endothelium have been described in atrial fibrillation, ischemia/reperfusion injury, cardiac hypertrophy, heart failure, sepsis, myocardial infarction, inflammation and thrombosis...
September 21, 2017: Medicina
https://www.readbyqxmd.com/read/29068585/microrna-in-cardiovascular-biology-and-disease
#19
REVIEW
Anna Wojciechowska, Agata Braniewska, Katarzyna Kozar-Kamińska
MicroRNAs (miRNAs) are members of a non-coding RNA family. They act as negative regulators of protein translation by affecting messenger RNA (mRNA) stability; they modulate numerous signaling pathways and cellular processes, and are involved in cell-to-cell communication. Thus, studies on miRNAs offer an opportunity to improve our understanding of complex biological mechanisms. In the cardiovascular system, miRNAs control functions of various cells, such as cardiomyocytes, endothelial cells, smooth muscle cells and fibroblasts...
August 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29067116/effect-of-isoflurane-n2o-inhalation-and-propofol-fentanyl-anesthesia-on-myocardial-function-as-assessed-by-cardiac-troponin-caspase-3-cyclooxygenase-2-and-inducible-nitric-oxide-synthase-expression
#20
Zhuanghui Zhu, Shuanglian Yi, Zhonggui Shan, Hongwei Guo, Shaofan Ke
The aim of this study was to evaluate the effect of isoflurane + N2O inhalation and propofol + fentanyl anesthesia on myocardial function as assessed by cardiac troponin T (cTnT). A total of 60 patients were randomized into two groups: isoflurane + N2O inhalation (n=30) and propofol + fentanyl anesthesia (n=30). The findings demonstrated that there was no significant difference between the two experimental groups in terms of cTnT levels, demographic properties or hemodynamic parameters. Isoflurane + N2O inhalation and propofol + fentanyl anesthesia, respectively, were also investigated in a rat model of myocardial infarction...
November 2017: Experimental and Therapeutic Medicine
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