keyword
MENU ▼
Read by QxMD icon Read
search

Myocardial recovery

keyword
https://www.readbyqxmd.com/read/29143226/aligned-ovine-diaphragmatic-myoblasts-overexpressing-human-connexin-43-seeded-on-poly-l-lactic-acid-scaffolds-for-potential-use-in-cardiac-regeneration
#1
Carlos Sebastián Giménez, Paola Locatelli, Florencia Montini Ballarin, Alejandro Orlowski, Ricardo A Dewey, Milagros Pena, Gustavo Abel Abraham, Ernesto Alejandro Aiello, María Del Rosario Bauzá, Luis Cuniberti, Fernanda Daniela Olea, Alberto Crottogini
Diaphragmatic myoblasts (DMs) are precursors of type-1 muscle cells displaying high exhaustion threshold on account that they contract and relax 20 times/min over a lifespan, making them potentially useful in cardiac regeneration strategies. Besides, it has been shown that biomaterials for stem cell delivery improve cell retention and viability in the target organ. In the present study, we aimed at developing a novel approach based on the use of poly (L-lactic acid) (PLLA) scaffolds seeded with DMs overexpressing connexin-43 (cx43), a gap junction protein that promotes inter-cell connectivity...
November 15, 2017: Cytotechnology
https://www.readbyqxmd.com/read/29141547/cardioprotective-effects-of-serca2a-overexpression-against-ischemia-reperfusion-induced-injuries-in-rats
#2
Yan Jian, Li-Li Tian, Lin-Hui Wang, Xiao-Dong Zhao, Jing-Wei Chen, Koji Murao, Wei Zhu, Liang Dong, Guo-Qing Wang, Wan-Ping Sun, Guo-Xing Zhang
AIMS: The aim of the present study is to assess how genetically increased Sarcoplasmic reticulum Ca2+-ATPase (Serca2a) expression affects cardiac injury after ischemia/reperfusion (I/R) exposure and the related mechanisms involved. METHODS AND RESULTS: Rats were subjected to left anterior descending coronary artery (LAD) occlusion for 30 min followed by a 24-hour reperfusion. Cardiac function analysis revealed that cardiac function dramatically improved in Serca2a transgenic rats (Serca2aTG) rats compared to wild type (WT) rats...
November 10, 2017: Current Gene Therapy
https://www.readbyqxmd.com/read/29141446/myocardial-reparative-functions-of-exosomes-from-mesenchymal-stem-cells-are-enhanced-by-hypoxia-treatment-of-the-cells-via-transferring-microrna-210-in-an-nsmase2-dependent-way
#3
Jinyun Zhu, Kai Lu, Ning Zhang, Yun Zhao, Qunchao Ma, Jian Shen, Yinuo Lin, Pingping Xiang, Yaoliang Tang, Xinyang Hu, Jinghai Chen, Wei Zhu, Keith A Webster, Jian'an Wang, Hong Yu
Hypoxia treatment enhances paracrine effect of mesenchymal stem cells (MSCs). The aim of this study was to investigate whether exosomes from hypoxia-treated MSCs (Exo(H)) are superior to those from normoxia-treated MSCs (Exo(N)) for myocardial repair. Mouse bone marrow-derived MSCs were cultured under hypoxia or normoxia for 24 h, and exosomes from conditioned media were intramyocardially injected into infarcted heart of C57BL/6 mouse. Exo(H) resulted in significantly higher survival, smaller scar size and better cardiac functions recovery...
November 16, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29137693/another-chance-at-life-jordanian-patients-experience-of-going-through-a-myocardial-infarction
#4
Ali Ahmad Ammouri, Joy Kabasindi Kamanyire, Ahmad H Abu Raddaha, Susan Achora, Arwa Atef Obeidat
BACKGROUND AND PURPOSE: Myocardial infarction (MI) is a life-threatening health condition that has physical, spiritual, emotional, and social changes. Understanding feelings and thoughts of patients who suffered MI attacks is essential to recovery. Among Jordanian patients who suffered an acute attack of MI, the aim of the study was to describe the experiences and the varied meanings that they assign to their experiences. METHODS: A qualitative hermeneutic phenomenological research design was used...
November 1, 2017: Research and Theory for Nursing Practice
https://www.readbyqxmd.com/read/29131444/native-t1-reference-values-for-nonischemic-cardiomyopathies-and-populations-with-increased-cardiovascular-risk-a-systematic-review-and-meta-analysis
#5
REVIEW
Maaike van den Boomen, Riemer H J A Slart, Enzo V Hulleman, Rudi A J O Dierckx, Birgitta K Velthuis, Pim van der Harst, David E Sosnovik, Ronald J H Borra, Niek H J Prakken
BACKGROUND: Although cardiac MR and T1 mapping are increasingly used to diagnose diffuse fibrosis based cardiac diseases, studies reporting T1 values in healthy and diseased myocardium, particular in nonischemic cardiomyopathies (NICM) and populations with increased cardiovascular risk, seem contradictory. PURPOSE: To determine the range of native myocardial T1 value ranges in patients with NICM and populations with increased cardiovascular risk. STUDY TYPE: Systemic review and meta-analysis...
November 13, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29121086/improved-segmented-modified-look-locker-inversion-recovery-t1-mapping-sequence-in-mice
#6
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/29119294/predictors-of-improvements-in-exercise-capacity-during-cardiac-rehabilitation-in-the-recovery-phase-after-coronary-artery-bypass-graft-surgery-versus-acute-myocardial-infarction
#7
Yuji Suzuki, Kenichi Ito, Kazuya Yamamoto, Noriyuki Fukui, Hidetoshi Yanagi, Kazufumi Kitagaki, Harumi Konishi, Tetsuo Arakawa, Michio Nakanishi, Yoichi Goto
This study aimed to elucidate the predictors of improvements in exercise capacity during cardiac rehabilitation (CR) in the recovery phase after coronary artery bypass graft surgery (CABG) versus acute myocardial infarction (AMI). We studied 152 patients (91 after AMI and 61 after CABG) who participated in a 3-month CR program. All patients underwent a cardiopulmonary exercise test, blood tests, maximal quadriceps isometric strength (QIS) measurement, and bioelectrical impedance body composition measurement at the beginning and end of the 3-month CR program...
November 8, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29118882/association-of-heart-rate-recovery-with-microalbuminuria-in-non-obstructive-coronary-artery-disease
#8
Mustafa Yurtdas, Mahmut Ozdemir, Nesim Aladag, Yalin Tolga Yaylali
Background: Non-obstructive coronary artery disease (CAD) is associated with significantly increased risk for myocardial infarction. Heart rate recovery (HRR), a measure of autonomic function, is a strong predictor of all-cause mortality. Microalbuminuria, a marker of early arterial disease, is an independent risk factor for cardiovascular disease and mortality. We aimed to investigate HRR and determine its relationship with microalbuminuria in patients with non-obstructive CAD. Methods: We prospectively studied 565 patients who underwent elective coronary angiography...
October 2017: Cardiology Research
https://www.readbyqxmd.com/read/29112315/reverse-double-inversion-recovery-improving-motion-robustness-of-cardiac-t2-weighted-dark-blood-turbo-spin-echo-sequence
#9
Chenxi Hu, Steffen Huber, Syed R Latif, Guido Santacana-Laffitte, Hamid R Mojibian, Lauren A Baldassarre, Dana C Peters
BACKGROUND: Cardiac dark-blood turbo spin-echo (TSE) imaging is sensitive to through-plane motion, resulting in myocardial signal reduction. PURPOSE: To propose and validate reverse double inversion-recovery (RDIR)-a dark-blood preparation with improved motion robustness for the cardiac dark-blood TSE sequence. STUDY TYPE: Prospective. POPULATION: Healthy volunteers (n = 10) and patients (n = 20). FIELD STRENGTH: 1...
November 7, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29110320/a-general-framework-for-constraint-approaches-to-adjusted-risk-differences
#10
Yuanyuan Tang, Michelle Xia, Liangrui Sun, John A Spertus, Philip G Jones
The risk difference is an intelligible measure for comparing disease incidence in two exposure or treatment groups. Despite its convenience in interpretation, it is less prevalent in epidemiological and clinical areas where regression models are required in order to adjust for confounding. One major barrier to its popularity is that standard linear binomial or Poisson regression models can provide estimated probabilities out of the range of (0,1), resulting in possible convergence issues. For estimating adjusted risk differences, we propose a general framework covering various constraint approaches based on binomial and Poisson regression models...
November 7, 2017: Biometrical Journal. Biometrische Zeitschrift
https://www.readbyqxmd.com/read/29106745/demonstration-of-velocity-selective-myocardial-arterial-spin-labeling-perfusion-imaging-in-humans
#11
Terrence R Jao, Krishna S Nayak
PURPOSE: Transit delay is a potential source of error in cardiac arterial spin-labeled (ASL) in heart failure or with collateral circulation. This study demonstrates the feasibility of using transit delay insensitive velocity selective ASL and compares its performance with flow-sensitive alternating inversion recovery (FAIR) ASL. METHODS: Velocity selective labeling was achieved using an adiabatic BIR8 preparation. FAIR and velocity-selective ASL (VSASL) with various velocity cutoffs (VC  = 10-40 cm/s) and labeling directions (anterior-posterior X, lateral-septal Y, and apical-basal Z) were carried out in 10 healthy volunteers (1F/9M age 23-30 y)...
November 6, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29105485/thrombotic-thrombocytopenic-purpura-presenting-as-a-severe-peripartum-cardiogenic-shock-role-of-myocardial-biopsy-and-assist-device-for-diagnosis-and-resuscitation
#12
Sébastien Champion, Dominique Belcour, Bernard Alex Gaüzère
We describe the case of a peripartum thrombotic thrombocytopenic purpura with fulminant cardiogenic shock treated with extracorporeal life support. Thrombotic thrombocytopenic purpura should be considered in the case of thrombotic microangiopathy with several or severe organ involvement and needs emergent treatment with plasmapheresis (with or without rituximab). In the case of cardiac involvement, aggressive treatment should be considered given the high mortality and the potential complete recovery.
November 1, 2017: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/29104471/neonatal-lipopolysaccharide-exposure-gender-dependently-increases-heart-susceptibility-to-ischemia-reperfusion-injury-in-male-rats
#13
Peng Zhang, Juanxiu Lv, Yong Li, Lubo Zhang, Daliao Xiao
Background: Adverse stress exposure during the early neonatal period has been shown to cause aberrant development, resulting in an increased risk of adult disease. We tested the hypothesis that neonatal exposure to lipopolysaccharide (LPS) does not alter heart function at rest condition but causes heart dysfunction under stress stimulation later in life. Methods: Saline control or LPS were administered to neonatal rats via intraperitoneal injection. Experiments were conducted in 6 week-old male and female rats...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29101173/ph-recovery-from-a-proton-load-in-rat-cardiomyocytes-effects-of-chronic-exercise
#14
Vennetia R Danes, Josephine Anthony, Kaveh Rayani, Kenneth W Spitzer, Glen F Tibbits
The ability of cardiomyocytes to recover from a proton load was examined in the hearts of exercise-trained (T) and sedentary control (C) rats in CO2/HCO3--free media. Acidosis was created by the NH4Cl pre-pulse technique and pHi was determined using fluorescence microscopy on carboxy-SNARF-1 AM loaded isolated cardiomyocytes. CO2-independent intracellular pH buffering capacity (βi) was measured by incrementally reducing the [NH4Cl]o in steps of 50% from 20 to 1.25 mM. βi increased as pHi decreased in both T and C groups...
November 3, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29100989/single-shot-late-gd-enhancement-imaging-of-myocardial-infarction-with-retrospectively-adjustable-contrast-and-heart-phase
#15
Tobias Wech, Johannes Tran-Gia, Felix Rützel, Thorsten Klink, Thorsten A Bley, Herbert Köstler
OBJECT: To enable a retrospective adjustment of image contrast and heart phase in inversion recovery prepared late gadolinium enhancement (LE) imaging in the myocardium. MATERIALS AND METHODS: After one inversion pulse, unsegmented data were acquired over multiple cardiac cycles using a radial spoiled gradient-echo sequence with golden angle increments between subsequent readouts. Model-based acceleration of parameter mapping (MAP) was combined with an image registration technique ("MOCO-MAP") to enable the reconstruction of images with arbitrary inversion time TI...
October 31, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29100702/3-year-clinical-outcomes-with-everolimus-eluting-bioresorbable-coronary-scaffolds-the%C3%A2-absorb-iii-trial
#16
Dean J Kereiakes, Stephen G Ellis, Christopher Metzger, Ronald P Caputo, David G Rizik, Paul S Teirstein, Marc R Litt, Annapoorna Kini, Ameer Kabour, Steven O Marx, Jeffrey J Popma, Robert McGreevy, Zhen Zhang, Charles Simonton, Gregg W Stone
BACKGROUND: The Absorb everolimus-eluting poly-L-lactic acid-based bioresorbable vascular scaffold (BVS) provides early drug delivery and mechanical support functions similar to metallic drug-eluting stents (DES), followed by complete bioresorption in approximately 3 years with recovery of vascular structure and function. The ABSORB III trial demonstrated noninferior rates of target lesion failure (cardiac death, target vessel myocardial infarction [TVMI], or ischemia-driven target lesion revascularization) at 1 year in 2,008 patients with coronary artery disease randomized to BVS versus cobalt-chromium everolimus-eluting stents (EES)...
October 20, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29100618/incidence-and-evolution-of-sepsis-induced-cardiomyopathy-in-a-cohort-of-patients-with-sepsis-and-septic-shock
#17
I Narváez, A Canabal, C Martín, M Sánchez, A Moron, J Alcalá, S Giacoman, M Magro
OBJETIVE: The aim of this study was to establish the incidence of septic cardiomyopathy (SM) in patients with sepsis and septic shock, to describe its characteristics and testing its evolution. DESIGN: Prospective cohort study. PARTICIPANTS: We included 57 consecutive patients admitted to Intensive Care Unit, who met criteria of sepsis and septic shock. PRINCIPAL VARIABLES OF INTEREST: Clinical and biochemical variables were analyzed...
October 31, 2017: Medicina Intensiva
https://www.readbyqxmd.com/read/29097843/a-case-report-of-ventricular-septal-defect-in-an-adult-sprague-dawley-rat
#18
Tetsuro Kurotaki, Yuki Tomonari, Junko Sato, Takeshi Kanno, Minoru Tsuchitani
A 20-week-old male Sprague Dawley rat noted with decreased body weight, dyspnea, and anorexia beginning 2 days before death was necropsied in the recovery period of a sub-chronic toxicity study. The heart was severely enlarged (30 × 20 × 20 mm), 3-4 times larger than normal, with an approximately 6 mm wide defect in the upper, membranous portion of the ventricular septum. Both ventricles measured 4 mm in thickness, and the right ventricle was 4 times thicker than normal. According to a microscopic examination, the myocardial fibers were severely hypertrophic in the right ventricle and mildly hypertrophic in the left ventricle and septum...
October 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/29095731/understanding-myocardial-infarction-evolution-infarct-size-and-index-of-microvascular-resistance-new-clinical-perspective
#19
Massimo Fineschi
: Approximately 40% of patients after ST elevation acute myocardial infarction (STEMI) have evidence of ineffective myocardial revascularization due to microvascular damage despite a successful target vessel recanalization by means of primary angioplasty (PPCI). Microvascular dysfunction is associated with the extension of the infarct size and with higher morbidity and mortality. Early identification of this phenomenon could be useful both for therapeutic and prognostic purposes. Index of microvascular resistance (IMR) could be assessed invasively at the end of PPCI and is a measure of microvascular function...
November 8, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29094607/predictors-of-survival-and-ability-to-wean-from-short-term-mechanical-circulatory-support-device-following-acute-myocardial-infarction-complicated-by-cardiogenic-shock
#20
A Reshad Garan, Christina Eckhardt, Koji Takeda, Veli K Topkara, Kevin Clerkin, Justin Fried, Amirali Masoumi, Ryan T Demmer, Pauline Trinh, Melana Yuzefpolskaya, Yoshifumi Naka, Dan Burkhoff, Ajay Kirtane, Paolo C Colombo, Hiroo Takayama
BACKGROUND: Cardiogenic shock following acute myocardial infarction (AMI-CS) portends a poor prognosis. Short-term mechanical circulatory support devices (MCSDs) provide hemodynamic support for patients with cardiogenic shock but predictors of survival and the ability to wean from short-term MCSDs remain largely unknown. METHODS: All patients > 18 years old treated at our institution with extra-corporeal membrane oxygenation or short-term surgical ventricular assist device for AMI-CS were studied...
November 1, 2017: European Heart Journal. Acute Cardiovascular Care
keyword
keyword
78989
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"