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https://www.readbyqxmd.com/read/28528454/new-insights-into-pericarditis-mechanisms-of-injury-and-therapeutic-targets
#1
REVIEW
Bo Xu, Serge C Harb, Paul C Cremer
PURPOSE OF REVIEW: This review article aims to provide a contemporary insight into the pathophysiological mechanisms of and therapeutic targets for pericarditis, drawing distinction between autoinflammatory and autoimmune pericarditis. RECENT FINDINGS: Recent research has focused on the distinction between autoinflammatory and autoimmune pericarditis. In autoinflammatory pericarditis, viruses can activate the sensor molecule of the inflammasome, which results in downstream release of cytokines, such as interleukin-1, that recruit neutrophils and macrophages to the site of injury...
July 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28525856/oleuropein-prevents-the-development-of-experimental-autoimmune-myocarditis-in-rats
#2
Jia-Ying Zhang, Zheng Yang, Kun Fang, Zhan-Li Shi, Dan-Hong Ren, Jing Sun
Oleuropein (OLE) is a natural secoiridoid that is derived from Olea europaea. OLE possesses cardioprotective effects in experimental models of hypertension, myocardial infarction, atherosclerosis and hyperlipidaemia. In the present study, the effects of OLE on experimental autoimmune myocarditis (EAM) were evaluated. EAM in rats were induced by subcutaneous injections of porcine cardiac myosin. Cardiac function parameters, myocardial pathology, myocardial inflammatory cell infiltration and nuclear factor kappa-B (NF-κB) expression were measured...
May 16, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28525390/microrna-155-attenuates-late-sepsis-induced-cardiac-dysfunction-through-jnk-and-%C3%AE-arrestin-2
#3
Yu Zhou, Yan Song, Zahir Shaikh, Hui Li, Haiju Zhang, Yi Caudle, Shouhua Zheng, Hui Yan, Dan Hu, Charles Stuart, Deling Yin
Cardiac dysfunction is correlated with detrimental prognosis of sepsis and contributes to a high risk of mortality. After an initial hyperinflammatory reaction, most patients enter a protracted state of immunosuppression (late sepsis) that alters both innate and adaptive immunity. The changes of cardiac function in late sepsis are not yet known. MicroRNA-155 (miR-155) is previously found to play important roles in both regulations of immune activation and cardiac function. In this study, C57BL/6 mice were operated to develop into early and late sepsis phases, and miR-155 mimic was injected through the tail vein 48 h after cecal ligation and puncture (CLP)...
May 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28520682/progress-in-the-pathogenesis-and-treatment-of-cardiac-manifestations-of-neonatal-lupus
#4
Peter Izmirly, Amit Saxena, Jill P Buyon
PURPOSE OF REVIEW: To provide new insights into pathogenesis, prevention and management of cardiac manifestations of neonatal lupus (cardiac neonatal lupus) and issues pertinent to all anti-SSA/Ro positive individuals of childbearing age. RECENT FINDINGS: Antibody specificity with high risk for cardiac neonatal lupus remains elusive, but high titers of Ro60, Ro52 or Ro52p200 antibodies appear to be required. Varying antibody specificities to the p200 region of Ro52 can induce first-degree block in a rodent model...
May 16, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/28507181/fli1-deficiency-induces-cxcl6-expression-in-dermal-fibroblasts-and-endothelial-cells-contributing-to-the-development-of-fibrosis-and-vasculopathy-in-systemic-sclerosis
#5
Takashi Taniguchi, Yoshihide Asano, Kouki Nakamura, Takashi Yamashita, Ryosuke Saigusa, Yohei Ichimura, Takehiro Takahashi, Tetsuo Toyama, Ayumi Yoshizaki, Shinichi Sato
OBJECTIVE: CXCL6, a chemokine with proangiogenic property, is reported to be involved in vasculopathy associated with systemic sclerosis (SSc). We investigated the contribution of CXCL6 to SSc development by focusing on the association of friend leukemia virus integration 1 (Fli1) deficiency, a potential predisposing factor of SSc, with CXCL6 expression and clinical correlation of serum CXCL6 levels. METHODS: mRNA levels of target genes and the binding of Fli1 to the CXCL6 promoter were evaluated by quantitative reverse transcription-PCR and chromatin immunoprecipitation, respectively...
May 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28493895/the-cardiac-glycoside-ouabain-activates-nlrp3-inflammasomes-and-promotes-cardiac-inflammation-and-dysfunction
#6
Motoi Kobayashi, Fumitake Usui-Kawanishi, Tadayoshi Karasawa, Hiroaki Kimura, Sachiko Watanabe, Nathan Mise, Fujio Kayama, Tadashi Kasahara, Naoyuki Hasebe, Masafumi Takahashi
Cardiac glycosides such as digoxin are Na+/K+-ATPase inhibitors that are widely used for the treatment of chronic heart failure and cardiac arrhythmias; however, recent epidemiological studies have suggested a relationship between digoxin treatment and increased mortality. We previously showed that nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing 3 (NLRP3) inflammasomes, which regulate caspase-1-dependent interleukin (IL)-1β release, mediate the sterile cardiovascular inflammation...
2017: PloS One
https://www.readbyqxmd.com/read/28492701/short-term-intensive-training-attenuates-the-exercise-induced-interaction-of-mono-1-2-cells-and-platelets-after-coronary-bypass-in-cardiac-patients
#7
Shu-Chun Huang, Mei-Kuen Wong, Pyng-Jing Lin, Feng-Chun Tsai, Jaw-Ji Chu, Meng-Yu Wu, Tieh-Cheng Fu, Jong-Shyan Wang
The interaction between platelets and monocytes plays a critical role in the pathogenesis and progression of cardiovascular diseases. This study investigated how short-term intensive training (SIT) influences monocyte subset characteristics and exercise-induced monocyte and platelet aggregates (MPAs) following elective coronary bypass (CABG) in cardiac patients. Forty-nine patients hospitalised for CABG were randomised into SIT (N=26) and conventional training (CT, N=23) groups. The SIT subjects underwent supervised aerobic training at 80~120 % of the ventilatory anaerobic threshold based on sub-maximal exercise tests performed 7 days post-CABG for 20 sessions with two sessions/day and 30 min/session, which were completed within four weeks after surgery...
May 11, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28490840/toll-like-receptor-9-promotes-survival-in-serca2a-ko-heart-failure-mice
#8
Yangchen Dhondup, Ivar Sjaastad, Øystein Sandanger, Jan Magnus Aronsen, Muhammad Shakil Ahmed, Håvard Attramadal, Alexandra Vanessa Finsen, Lili Zhang, Trine Ranheim, Katrine Alfsnes, Pål Aukrust, Geir Christensen, Arne Yndestad, Leif Erik Vinge
Aim. Inflammation is important in heart failure (HF). The role of the immune receptor toll-like receptor 9 (TLR9) in HF is not understood and not investigated in diastolic HF. We investigated the role of TLR9 in a murine diastolic HF model caused by cardiomyocyte SERCA2a excision. Methods and Results. We crossed SERCA2a KO and TLR9 KO mice to generate four mouse lines. Tamoxifen-induced cardiomyocyte SERCA2a gene excision was carried out in mice, causing diastolic HF. After 7.6 weeks, cardiac functions and dimensions were analyzed by echocardiography and heart tissues were processed...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28490219/recruitment-of-macrophages-from-the-spleen-contributes-to-myocardial-fibrosis-and-hypertension-induced-by-angiotensin-ii
#9
Ning-Ping Wang, James Erskine, Wei-Wei Zhang, Rong-Hua Zheng, Li-Hui Zhang, Garret Duron, Julian Gendreau, Zhi-Qing Zhao
INTRODUCTION: The purpose of this study was to determine whether macrophages migrated from the spleen are associated with angiotensin II-induced cardiac fibrosis and hypertension. METHODS: Sprague-Dawley rats were subjected to angiotensin II infusion in vehicle (500 ng/kg/min) for up to four weeks. In splenectomy, the spleen was removed before angiotensin II infusion. In the angiotensin II AT1 receptor blockade, telmisartan was administered by gastric gavage (10 mg/kg/day) during angiotensin II infusion...
April 2017: Journal of the Renin-angiotensin-aldosterone System: JRAAS
https://www.readbyqxmd.com/read/28483670/role-of-14-3-3%C3%AE-protein-on-cardiac-fatty-acid-metabolism-and-macrophage-polarization-after-high-fat-diet-induced-type-2-diabetes-mellitus
#10
Remya Sreedhar, Somasundaram Arumugam, Rajarajan A Thandavarayan, Vengadeshprabhu Karuppagounder, Yusuke Koga, Takashi Nakamura, Meilei Harima, Kenichi Watanabe
Diabetic cardiomyopathy (DCM), a metabolic disorder, is one of the leading causes of mortality around the world and its pathogenesis involves cardiac inflammation and altered metabolic profile. Altered fatty acid metabolism during DCM can cause macrophage polarization in which inflammatory M1 phenotype dominates over the anti-inflammatory M2 phenotype. Hence, it is essential to identify a specific target, which could revert the metabolic profile and thereby reducing the M1 macrophage polarization. 14-3-3η protein has several cellular protective functions especially in the heart as plenty of reports available in various animal models of heart failure including diabetes mellitus...
May 5, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28482139/contributions-of-bmps-in-cardiac-repair-cells-in-3d-in-vitro-models-and-angiogenesis
#11
Isabella Pallotta, Bruce Sun, Gregory Lallos, Cecile Terrenoire, Donald O Freytes
One of the main efforts in myocardial tissue engineering consists of designing cardiac tissues able to rescue the reduction in heart function once implanted at the site of myocardial infarction. To date, the efficiency of this approach in pre-clinical applications is limited in part by our incomplete understanding of the inflammatory environment known to be present at the site of myocardial infarct and by poor vascularization. We recently reported that polarized macrophages known to be present at the site of myocardial infarction secrete BMP-2 and BMP-4 proteins causing changes in the expression of cardiac proteins in a 2D in vitro model...
May 8, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28481959/trpv2-knockout-mice-demonstrate-an-improved-cardiac-performance-following-myocardial-infarction-due-to-attenuated-activity-of-peri-infarct-macrophages
#12
Michal Entin-Meer, Lena Cohen, Einat Hertzberg-Bigelman, Ran Levy, Jeremy Ben-Shoshan, Gad Keren
BACKGROUND: We have recently shown that the expression of the transient receptor potential vanilloid 2 channel, TRPV2, is upregulated in the peri-infarct zone 3-5 days following an acute myocardial infarction (AMI). Further analysis has demonstrated that invading monocytes maturing to macrophages merely harbor the documented elevated expression of this channel. PURPOSE: Assess cardiac function in TRPV2-KO mice compared to TRPV2-WT following AMI and analyze the potential involvement of TRPV2-expressing macrophages in the recovery process...
2017: PloS One
https://www.readbyqxmd.com/read/28470940/p2x7-receptor-inhibition-attenuated-sympathetic-nerve-sprouting-after-myocardial-infarction-via-the-nlrp3-il-1%C3%AE-pathway
#13
Jie Yin, Yu Wang, Hesheng Hu, Xiaolu Li, Mei Xue, Wenjuan Cheng, Ye Wang, Xinran Li, Na Yang, Yugen Shi, Suhua Yan
Mounting evidence supports the hypothesis that inflammation modulates sympathetic sprouting after myocardial infarction (MI). The myeloid P2X7 signal has been shown to activate the nucleotide-binding and oligomerization domain-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome, a master regulator of inflammation. We investigated whether P2X7 signal participated in the pathogenesis of sympathetic reinnervation after MI, and whether NLRP3/interleukin-1β (IL-1β) axis is involved in the process...
May 4, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28470178/immunology-surprising-role-of-cardiac-macrophages-in-heart-electrical-conduction
#14
Irene Fernández-Ruiz
No abstract text is available yet for this article.
June 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28469770/fgf-16-protects-against-adverse-cardiac-remodeling-in-the-infarct-diabetic-heart
#15
Yanyan Hu, Li Li, Lin Shen, Haiqing Gao, Fei Yu, Wenbin Yin, Wei Liu
Till now, no functional studies for FGF-16 in diabetic heart have been reported. Therefore, this study aims to evaluate the potential function of FGF-16 in inhibiting adverse cardiac remodeling in post myocardial infarction (MI) of diabetic heart. We investigated the role of fibroblast growth factor-16 (FGF-16) in post-MI remodeling and role of cardio-protection in the diabetic infarct heart. Adult db/db diabetic mice were assigned to sham group, MI group and MI+FGF-16 group, respectively. MI group was induced by permanent coronary artery ligation, and the mice were subjected to 2D trans-thoracic echocardiography 2-4 weeks post-surgery...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28469091/increased-de-novo-ceramide-synthesis-and-accumulation-in-failing-myocardium
#16
Ruiping Ji, Hirokazu Akashi, Konstantinos Drosatos, Xianghai Liao, Hongfeng Jiang, Peter J Kennel, Danielle L Brunjes, Estibaliz Castillero, Xiaokan Zhang, Lily Y Deng, Shunichi Homma, Isaac J George, Hiroo Takayama, Yoshifumi Naka, Ira J Goldberg, P Christian Schulze
Abnormal lipid metabolism may contribute to myocardial injury and remodeling. To determine whether accumulation of very long-chain ceramides occurs in human failing myocardium, we analyzed myocardial tissue and serum from patients with severe heart failure (HF) undergoing placement of left ventricular assist devices and controls. Lipidomic analysis revealed increased total and very long-chain ceramides in myocardium and serum of patients with advanced HF. After unloading, these changes showed partial reversibility...
May 4, 2017: JCI Insight
https://www.readbyqxmd.com/read/28468789/intracoronary-administration-of-allogeneic-adipose-tissue-derived-mesenchymal-stem-cells-improves-myocardial-perfusion-but-not-left-ventricle-function-in-a-translational-model-of-acute-myocardial-infarction
#17
Joaquim Bobi, Núria Solanes, Rodrigo Fernández-Jiménez, Carlos Galán-Arriola, Ana Paula Dantas, Leticia Fernández-Friera, Carolina Gálvez-Montón, Elisabet Rigol-Monzó, Jaume Agüero, José Ramírez, Mercè Roqué, Antoni Bayés-Genís, Javier Sánchez-González, Ana García-Álvarez, Manel Sabaté, Santiago Roura, Borja Ibáñez, Montserrat Rigol
BACKGROUND: Autologous adipose tissue-derived mesenchymal stem cells (ATMSCs) therapy is a promising strategy to improve post-myocardial infarction outcomes. In a porcine model of acute myocardial infarction, we studied the long-term effects and the mechanisms involved in allogeneic ATMSCs administration on myocardial performance. METHODS AND RESULTS: Thirty-eight pigs underwent 50 minutes of coronary occlusion; the study was completed in 33 pigs. After reperfusion, allogeneic ATMSCs or culture medium (vehicle) were intracoronarily administered...
May 3, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28462209/lung-ischemia-reperfusion-injury-the-therapeutic-role-of-dipeptidyl-peptidase-4-inhibition
#18
REVIEW
Paul A J Beckers, Jan F Gielis, Paul E Van Schil, Dirk Adriaensen
Dipeptidyl peptidase 4 (DPP4) is a cell surface protease that has been reported to play a role in glucose homeostasis, cancer, HIV, autoimmunity, immunology and inflammation. A role for DPP4 in ischemia-reperfusion injury (IRI) in the heart has been established. Dipeptidyl peptidase 4 inhibition (DPP4i) appeared to decrease infarct size, improves cardiac function and promotes myocardial regeneration. Lung ischemia reperfusion injury is caused by a complex mechanism in which macrophages and neutrophils play an important role...
March 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28449778/histopathological-and-immunological-characteristics-of-tachycardia-induced-cardiomyopathy
#19
Karin A L Mueller, David Heinzmann, Karin Klingel, Petra Fallier-Becker, Reinhard Kandolf, Antonios Kilias, Britta Walker-Allgaier, Oliver Borst, Jörg Kumbrink, Thomas Kirchner, Harald Langer, Tobias Geisler, Jürgen Schreieck, Michael Gramlich, Meinrad Gawaz, Peter Seizer
BACKGROUND: Tachycardiomyopathy or tachycardia-induced cardiomyopathy (TCM) has been known for decades as a reversible form of nonischemic cardiomyopathy. However, its mechanism and properties remain poorly understood. OBJECTIVES: The current study investigated endomyocardial biopsy samples from patients with TCM and compared them with samples from patients with dilated cardiomyopathy (DCM) and inflammatory cardiomyopathy (ICM). METHODS: The study included 189 patients with new-onset heart failure and severely reduced ejection fraction not caused by valvular or ischemic heart disease...
May 2, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28446966/monocytes-and-macrophages-in-cardiac-injury-and-repair
#20
REVIEW
Hendrik B Sager, Thorsten Kessler, Heribert Schunkert
Myocardial infarction (MI) is one of the major contributors to worldwide morbidity and mortality. It is atherosclerosis' most dreadful complication and occurs after the supply of oxygenated blood to the heart is blocked. Understanding how cardiac tissue is injured and later regenerates is of crucial importance to improve the sequelae after the acute event. We now understand that the immune system substantially contributes to both the acute inflammatory response and the regenerative response that follow tissue injury after MI...
March 2017: Journal of Thoracic Disease
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