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https://www.readbyqxmd.com/read/29145641/changes-in-global-longitudinal-strain-and-left-ventricular-ejection-fraction-during-the-first-year-after-myocardial-infarction-results-from-a-large-consecutive-cohort
#1
Tomasz Baron, Christina Christersson, Gustav Hjorthén, Eva-Maria Hedin, Frank A Flachskampf
Aims: To determine changes of global longitudinal strain (GLS) and their predictors in relation to classical echocardiographic parameters of left ventricular (LV) function, over 1 year, in consecutive patients with myocardial infarction (MI) and initially normal or impaired LV ejection fraction (EF). Methods and results: A total of 285 patients with MI prospectively included in the REBUS (RElevance of Biomarkers for future risk of thromb-oembolic events in UnSelected post-myocardial infarction patients) study underwent echocardiography within 72 h from admission and after 1 year...
November 13, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29141241/mmp-9-and-its-regulators-timp-1-and-emmprin-in-patients-with-acute-st-elevation-myocardial-infarction-a-nordistemi-substudy
#2
Trine Baur Opstad, Ingebjørg Seljeflot, Ellen Bøhmer, Harald Arnesen, Sigrun Halvorsen
OBJECTIVES: The extracellular matrix is involved in wound repair after acute myocardial infarction (AMI). We investigated whether matrix metalloproteinase (MMP)-9, tissue inhibitor of metalloproteinases (TIMP)-1, and the MMP inducer (EMMPRIN) are associated with infarct size, left ventricular function, and clinical outcome in ST-elevation-MI (STEMI). METHODS: In 243 STEMI patients, circulating EMMPRIN, MMP-9, and TIMP-1 were analyzed 3 days and 3 months post-AMI...
November 16, 2017: Cardiology
https://www.readbyqxmd.com/read/29137327/regulation-of-fbxo4-mediated-icam-1-protein-stability-in-metastatic-breast-cancer
#3
Jae-Hyeok Kang, Mi-Young Choi, Yan-Hong Cui, Neha Kaushik, Nizam Uddin, Ki-Chun Yoo, Min-Jung Kim, Su-Jae Lee
Advanced or progressive cancers share common traits such as altered transcriptional modulation, genetic modification, and abnormal post-translational regulation. These processes influence protein stability and cellular activity. Intercellular adhesion molecule-1 (ICAM-1) is involved in the malignant progression of various human cancers, including breast, liver, renal, and pancreatic cancers, but protein stability has not been deal with in metastatic breast cancer. Additionally, the relevance of the stability maintenance of ICAM-1 protein remains obscure...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29130393/wound-healing-effects-of-human-dermal-components-with-gelatin-dressing
#4
Hyun-Jun Jang, Yu-Mi Kim, Bo-Young Yoo, Young-Kwon Seo
There have been numerous investigations regarding various types of dressings and artificial dermis of solid form, yet limited research and development on paste types, such as hydrogels with dermal powder, have ensued. In this study, we compared the in vivo wound healing effects of gelatin paste containing dermal powder to a collagen type I/chondroitin 6-sulfate (coll/chondroitin) sponge and gelatin alone, after 48 days post grafting, in a skin wound rat model. In the dermis powder/gelatin paste-treated group, wound area contraction was minimized 50%, while in the gelatin and coll/chondroitin sponge groups, the initial area contracted 83-85% and 79-85%, respectively...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29127185/advances-in-computational-modelling-for-personalised-medicine-after-myocardial-infarction
#5
REVIEW
Kenneth Mangion, Hao Gao, Dirk Husmeier, Xiaoyu Luo, Colin Berry
Myocardial infarction (MI) is a leading cause of premature morbidity and mortality worldwide. Determining which patients will experience heart failure and sudden cardiac death after an acute MI is notoriously difficult for clinicians. The extent of heart damage after an acute MI is informed by cardiac imaging, typically using echocardiography or sometimes, cardiac magnetic resonance (CMR). These scans provide complex data sets that are only partially exploited by clinicians in daily practice, implying potential for improved risk assessment...
November 10, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29127009/nicorandil-alleviates-myocardial-injury-and-post-infarction-cardiac-remodeling-by-inhibiting-mst1
#6
Shanjie Wang, Yanhong Fan, Xinyu Feng, Chuang Sun, Zhaofeng Shi, Tian Li, Jianjun Lv, Zhi Yang, Zhijing Zhao, Dongdong Sun
BACKGROUND: Cardiomyocyte autophagy and apoptosis are crucial events underlying the development of cardiac abnormalities and dysfunction after myocardial infarction (MI). A better understanding of the cell signaling pathways involved in cardiac remodeling may support the development of new therapeutic strategies for the treatment of heart failure (HF) after MI. METHODS: A cardiac MI injury model was constructed by ligating the left anterior descending (LAD) coronary artery...
November 7, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29123530/human-cardiac-derived-stem-progenitor-cells-fine-tune-monocyte-derived-descendants-activities-toward-cardiac-repair
#7
Noémie Dam, Hocine Rachid Hocine, Itziar Palacios, Olga DelaRosa, Ramón Menta, Dominique Charron, Armand Bensussan, Hicham El Costa, Nabila Jabrane-Ferrat, Wilfried Dalemans, Eleuterio Lombardo, Reem Al-Daccak
Cardiac repair following MI relies on a finely regulated immune response involving sequential recruitment of monocytes to the injured tissue. Monocyte-derived cells are also critical for tissue homeostasis and healing process. Our previous findings demonstrated the interaction of T and natural killer cells with allogeneic human cardiac-derived stem/progenitor cells (hCPC) and suggested their beneficial effect in the context of cardiac repair. Therefore, we investigated here whether monocytes and their descendants could be also modulated by allogeneic hCPC toward a repair/anti-inflammatory phenotype...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29123150/lung-clearance-index-and-quantitative-computed-tomography-of-post-infectious-bronchiolitis-obliterans-in-infants
#8
Yoon Hee Kim, Hyun Joo Shin, In Suk Sol, Soo Yeon Kim, Jong Deok Kim, Haesung Yoon, Kyung Won Kim, Myung-Joon Kim, Mi-Jung Lee, Myung Hyun Sohn
Post-infectious bronchiolitis obliterans (BO) could be diagnosed via spirometry and chest computed tomography (CT); however, these tests are limited in infants. We aimed to evaluate the utility of lung clearance index (LCI) and air-trapping lung volume from chest CT in infants. This prospective study included 20 infants (mean age, 10.9 ± 6.3 months) diagnosed with post-infectious BO between 2009 and 2016. All subjects underwent multiple breath washout tests. For quantitative analysis of chest CT, the mean lung area attenuation value was used as an individual cutoff to determine the air-trapping lung volume...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29122962/frequent-drinking-of-small-volumes-improves-cardiac-function-and-survival-in-rats-with-chronic-heart-failure
#9
Can Zheng, Meihua Li, Toru Kawada, Masashi Inagaki, Kazunori Uemura, Masaru Sugimachi
Fluid retention is the main reason for the high hospitalization rate among patients with chronic heart failure (CHF). Given the lack of knowledge about fluid intake regulation and its consequences in patients with CHF, current guidelines do not provide clear direction for fluid management. Using a rat model of CHF, we investigated altering drinking behaviors and explored fluid management strategies. CHF was induced by ligating the left anterior descending coronary arteries in 8-week-old, male, Sprague-Dawley rats...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29122578/a-carvedilol-responsive-microrna-mir-125b-5p-protects-the-heart-from-acute-myocardial-infarction-by-repressing-pro-apoptotic-bak1-and-klf13-in-cardiomyocytes
#10
Ahmed S Bayoumi, Kyoung-Mi Park, Yongchao Wang, Jian-Peng Teoh, Tatsuya Aonuma, Yaoliang Tang, Huabo Su, Neal L Weintraub, Il-Man Kim
BACKGROUND: Cardiac injury is accompanied by dynamic changes in the expression of microRNAs (miRs), small non-coding RNAs that post-transcriptionally regulate target genes. MiR-125b-5p is downregulated in patients with end-stage dilated and ischemic cardiomyopathy, and has been proposed as a biomarker of heart failure. We previously reported that the β-blocker carvedilol promotes cardioprotection via β-arrestin-biased agonism of β1-adrenergic receptor while stimulating miR-125b-5p processing in the mouse heart...
November 7, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29121716/risk-prediction-in-post-infarction-patients-with-moderately-reduced-left-ventricular-ejection-fraction-by-combined-assessment-of-the-sympathetic-and-vagal-cardiac-autonomic-nervous-system
#11
W Hamm, L Stülpnagel, N Vdovin, G Schmidt, K D Rizas, A Bauer
AIM: Most deaths after myocardial infarction (MI) occur in patients with normal or moderately reduced left ventricular ejection fraction (LVEF >35%). Periodic repolarization dynamics (PRD) and deceleration capacity (DC) are novel ECG-based markers related to sympathetic and vagal cardiac autonomic nervous system activity. Here, we test the combination of PRD and DC to predict risk in post-infarction patients with LVEF >35%. METHODS AND RESULTS: We included 823 survivors of acute MI with LVEF >35%, aged ≤80years and in sinus rhythm...
December 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29121086/improved-segmented-modified-look-locker-inversion-recovery-t1-mapping-sequence-in-mice
#12
Maryam Nezafat, Isabel T Ramos, Markus Henningsson, Andrea Protti, Tamer Basha, René M Botnar
OBJECT: To develop and evaluate a 2D modified Look-Locker (MOLLI) for high-resolution T1 mapping in mice using a 3T MRI scanner. MATERIALS AND METHODS: To allow high-resolution T1 mapping in mice at high heart rates a multi-shot ECG-triggered 2D MOLLI sequence was developed. In the proposed T1 mapping sequence the optimal number of sampling points and pause cardiac cycles following an initial adiabatic inversion pulse was investigated in a phantom. Seven native control and eight mice, 3 days post myocardial infarction (MI) after administration of gadolinium were scanned...
2017: PloS One
https://www.readbyqxmd.com/read/29118146/dental-hygiene-students-perceptions-of-importance-and-confidence-in-applying-motivational-interviewing-during-patient-care
#13
Angela Mills, Wendy E Kerschbaum, Philip S Richards, Gail A Czarnecki, Janet S Kinney, Anne E Gwozdek
Purpose: Motivational Interviewing (MI) is an evidence-based, patient-centered counseling approach for eliciting behavior change. In 2012, the University of Michigan (U-M) Dental Hygiene Program significantly enhanced their behavior change curriculum by reinforcing and building upon the Motivational Interviewing segment. The purpose of this study was to examine students' perceptions of the importance of MI and their confidence in applying it during patient care.Methods: A convenience sample of 22 U-M Class of 2015 dental hygiene students who had received an enhanced curriculum participated in this study, utilizing a retrospective, pre-test/post-test design...
February 2017: Journal of Dental Hygiene: JDH
https://www.readbyqxmd.com/read/29117920/orbital-atherectomy-treatment-of-severely-calcified-native-coronary-lesions-in-patients-with-prior-coronary-artery-bypass-grafting-acute-and-one-year-outcomes-from-the-orbit-ii-trial
#14
Michael S Lee, Bynthia M Anose, Brad J Martinsen, Arthur C Lee, Richard A Shlofmitz, Jeffrey W Chambers
AIMS: Patients undergoing percutaneous coronary intervention (PCI), with a history of coronary artery bypass grafting (CABG), may be at increased risk for mortality and repeat revascularization, compared with patients without prior CABG. In this post-hoc analysis of the ORBIT II trial, safety and efficacy of coronary orbital atherectomy (OA) to modify severe coronary artery calcium, prior to stent placement, was evaluated in subjects based on history of CABG. METHODS AND RESULTS: Comorbidities: diabetes, dyslipidemia, hypertension, and history of myocardial infarction (MI) were more prevalent in the CABG group...
November 5, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29116876/preservation-of-functional-microvascular-bed-is-vital-for-long-term-survival-of-cardiac-myocytes-within-large-transmural-post-myocardial-infarction-scar
#15
Colleen Nofi, Yevgen Bogatyryov, Eduard I Dedkov
This study was aimed to understand the mechanism of persistent cardiac myocyte (CM) survival in myocardial infarction (MI) scars. A transmural MI was induced in 12-month-old Sprague-Dawley rats by permanent coronary artery ligation. The hearts were collected 3 days, 1, 2, 4, 8, and 12 weeks after MI and evaluated with histology, immunohistochemistry, and quantitative morphometry. Vasculature patency was assessed in 4-, 8-, and 12-week-old scars by infusion of 15-micron microspheres into the left ventricle before euthanasia...
November 1, 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/29116107/micrornas-regulating-superoxide-dismutase-2-are-new-circulating-biomarkers-of-heart-failure
#16
Emilie Dubois-Deruy, Marie Cuvelliez, Jan Fiedler, Henri Charrier, Paul Mulder, Eleonore Hebbar, Angelika Pfanne, Olivia Beseme, Maggy Chwastyniak, Philippe Amouyel, Vincent Richard, Christophe Bauters, Thomas Thum, Florence Pinet
Although several risk factors such as infarct size have been identified, the progression of heart failure (HF) remains difficult to predict in clinical practice. Using an experimental rat model of post-myocardial infarction (MI), we previously identified 45 proteins differentially modulated during HF by proteomic analysis. This study sought to identify microRNAs (miRNAs) able to regulate these proteins and to test their relevance as biomarkers for HF. In silico bioinformatical analysis selected 13 miRNAs related to the 45 proteins previously identified...
November 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29113826/ghrelin-suppresses-cardiac-fibrosis-of-post-myocardial-infarction-heart-failure-rats-by-adjusting-the-activina-follistatin-imbalance
#17
Chunyan Yang, Jinsha Liu, Kai Liu, Beibei Du, Kaiyao Shi, Mei Ding, Bing Li, Ping Yang
Ghrelin, a growth hormone-releasing peptide, potentially improves cardiac function, but the mechanisms remain unclear. In the study, the rat heart failure (HF) model was established by ligating the left anterior descending coronary artery (LAD) and treated with ghrelin (100μg/kg, subcutaneous injection, bid); neonatal rat cardiomyocytes were cultured and stimulated with Ang II (0.1μM) and ghrelin(0.1μM) to explore the underlying mechanism of ghrelin in myocardial remodeling. Hemodynamic changes and serum brain natriuretic peptide (BNP) concentrations were measured to assess cardiac function...
November 4, 2017: Peptides
https://www.readbyqxmd.com/read/29109780/metabolomic-profiling-of-extracellular-vesicles-and-alternative-normalization-methods-reveal-enriched-metabolites-and-strategies-to-study-prostate-cancer-related-changes
#18
Maija Puhka, Maarit Takatalo, Maria-Elisa Nordberg, Sami Valkonen, Jatin Nandania, Maria Aatonen, Marjo Yliperttula, Saara Laitinen, Vidya Velagapudi, Tuomas Mirtti, Olli Kallioniemi, Antti Rannikko, Pia R-M Siljander, Taija Maria Af Hällström
Body fluids are a rich source of extracellular vesicles (EVs), which carry cargo derived from the secreting cells. So far, biomarkers for pathological conditions have been mainly searched from their protein, (mi)RNA, DNA and lipid cargo. Here, we explored the small molecule metabolites from urinary and platelet EVs relative to their matched source samples. As a proof-of-concept study of intra-EV metabolites, we compared alternative normalization methods to profile urinary EVs from prostate cancer patients before and after prostatectomy and from healthy controls...
2017: Theranostics
https://www.readbyqxmd.com/read/29106912/cardiac-macrophage-biology-in-the-steady-state-heart-the-aging-heart-and-following-myocardial-infarction
#19
REVIEW
Yonggang Ma, Alan J Mouton, Merry L Lindsey
Macrophages play critical roles in homeostatic maintenance of the myocardium under normal conditions and in tissue repair after injury. In the steady-state heart, resident cardiac macrophages remove senescent and dying cells and facilitate electrical conduction. In the aging heart, the shift in macrophage phenotype to a proinflammatory subtype leads to inflammaging. Following myocardial infarction (MI), macrophages recruited to the infarct produce both proinflammatory and anti-inflammatory mediators (cytokines, chemokines, matrix metalloproteinases, and growth factors), phagocytize dead cells, and promote angiogenesis and scar formation...
October 13, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/29106401/irf3-and-type-i-interferons-fuel-a-fatal-response-to-myocardial-infarction
#20
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
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