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Recovery of cardiac function

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https://www.readbyqxmd.com/read/28081312/the-effects-of-balneotherapy-on-acute-process-related-and-cumulative-peripheral-cardiac-responses-and-pulmonary-functions-in-patients-with-musculoskeletal-disorders
#1
Senem Şaş, Şeyda Toprak Çelenay, Derya Özer Kaya
BACKGROUND/AIM: This study aimed to evaluate the effects of balneotherapy on acute, process-related, and cumulative peripheral cardiac responses and pulmonary functions in patients with musculoskeletal disorders. MATERIALS AND METHODS: Ninety-eight patients with musculoskeletal disorders referred to physiotherapy with balneotherapy were recruited. The patients received balneotherapy for 20 min 5 times per week for 2 weeks. Blood pressure and pulse were measured at the 0th, 5th, 10th, 20th, and 30th minutes during the 1st and 10th sessions...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28079228/attenuated-recovery-of-contractile-function-in-aging-hearts-following-global-ischemia-reperfusion-role-of-extracellular-hsp27-and-tlr4
#2
Lihua Ao, Yufeng Zhai, Chunhua Jin, Joseph C Cleveland, David A Fullerton, Xianzhong Meng
BACKGROUND: While cardiac functional recovery is attenuated in the elderly following cardiac surgery with obligatory global myocardial ischemia/reperfusion (I/R), the underlying mechanism remains incompletely understood. We observed previously that human and mouse myocardium releases heat shock protein (HSP) 27 during global I/R. Extracellular HSP27 induces myocardial inflammatory response and plays a role in post-ischemic cardiac dysfunction in adult mouse hearts. OBJECTIVE: This study was to determine the role of extracellular HSP27 and Toll-like receptor 4 (TLR4) in the attenuated functional recovery in aging mouse hearts following global I/R...
December 19, 2016: Molecular Medicine
https://www.readbyqxmd.com/read/28078076/sex-dependent-alteration-of-cardiac-cytochrome-p450-gene-expression-by-doxorubicin-in-c57bl-6-mice
#3
Marianne K O Grant, Davis M Seelig, Leslie C Sharkey, Beshay N Zordoky
BACKGROUND: There is inconclusive evidence about the role of sex as a risk factor for doxorubicin (DOX)-induced cardiotoxicity. Recent experimental studies have shown that adult female rats are protected against DOX-induced cardiotoxicity. However, the mechanisms of this sexual dimorphism are not fully elucidated. We have previously demonstrated that DOX alters the expression of several cytochrome P450 (CYP) enzymes in the hearts of male rats. Nevertheless, the sex-dependent effect of DOX on the expression of CYP enzymes is still not known...
2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/28077443/single-dose-intracardiac-injection-of-pro-regenerative-micrornas-improves-cardiac-function-after-myocardial-infarction
#4
Pierluigi Lesizza, Giulia Prosdocimo, Valentina Martinelli, Gianfranco Sinagra, Serena Zacchigna, Mauro Giacca
RATIONALE: Recent evidence indicates that a few human microRNAs (miRNAs), in particular hsa-miR-199a-3p and hsa-miR-590-3p, stimulate proliferation of cardiomyocytes and, once expressed in the mouse heart using viral vectors, induce cardiac regeneration after myocardial infarction. Viral vectors, however, are not devoid of safety issues and, more notably, drive expression of the encoded miRNAs for indefinite periods of time, which might not be desirable in light of human therapeutic application...
January 11, 2017: Circulation Research
https://www.readbyqxmd.com/read/28073805/sheet-like-remodeling-of-the-transverse-tubular-system-in-human-heart-failure-impairs-excitation-contraction-coupling-and-functional-recovery-by-mechanical-unloading
#5
Thomas Seidel, Sutip Navankasattusas, Azmi A Ahmad, Nikolaos A Diakos, Weining D Xu, Martin Tristani-Firouzi, Michael Bonios, Iosif Taleb, Dean Y Li, Craig H Selzman, Stavros G Drakos, Frank B Sachse
BACKGROUND: -Cardiac recovery in response to mechanical unloading by left ventricular assist devices (LVADs) has been demonstrated in subgroups of chronic heart failure (HF) patients. Hallmarks of HF are depletion and disorganization of the transverse tubular system (t-system) in cardiomyocytes. Here, we investigated remodeling of the t-system in human end-stage HF and its role in cardiac recovery. METHODS: -Left ventricular biopsies were obtained from 5 donors (CTRL) and 26 chronic HF patients undergoing implantation of LVADs...
January 10, 2017: Circulation
https://www.readbyqxmd.com/read/28071786/functional-and-cardioprotective-effects-of-simultaneous-and-individual-activation-of-protein-kinase-a-and-epac
#6
Igor Khaliulin, Mark Bond, Andrew F James, Zara Dyar, Raheleh Amini, Jason L Johnson, M-Saadeh Suleiman
BACKGROUND AND PURPOSE: Myocardial cAMP elevation confers cardioprotection against ischaemia/reperfusion (I/R) injury. cAMP activates two independent signalling pathways, PKA and Epac. This study investigated the cardiac effects of activating PKA and/or Epac and their involvement in cardioprotection against I/R. EXPERIMENTAL APPROACH: Hearts extracted from male rats were used either for determination of PKA and PKC activation or perfused in the Langendorff mode for either cardiomyocytes isolation or used to monitor functional activity at basal levels and after 30 min global ischaemia and 2 h reperfusion...
January 10, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28069694/myocardial-tissue-engineering-with-cells-derived-from-human-induced-pluripotent-stem-cells-and-a-native-like-high-resolution-3-dimensionally-printed-scaffold
#7
Ling Gao, Molly Kupfer, Jangwook Jung, Libang Yang, Patrick Zhang, Yong Sie, Quyen Tran, Visar Ajeti, Brian Freeman, Vladimir Fast, Paul Campagnola, Brenda Ogle, Jianyi Zhang
RATIONALE: Conventional three-dimensional (3D) printing techniques cannot produce structures of the size at which individual cells interact. OBJECTIVE: Here, we used multiphoton-excited, 3-dimensional printing (MPE-3DP) to generate a native-like, extracellular matrix (ECM) scaffold with submicron resolution, and then seeded the scaffold with cardiomyocytes (CMs), smooth-muscle cells (SMCs), and endothelial cells (ECs) that had been differentiated from human induced-pluripotent stem cells (iPSCs) to generate a human, iPSC-derived cardiac muscle patch (hCMP), which was subsequently evaluated in a murine model of myocardial infarction (MI)...
January 9, 2017: Circulation Research
https://www.readbyqxmd.com/read/28069456/neurocardiac-protection-with-milrinone-for-restoring-acute-cerebral-hypoperfusion-and-delayed-ischemic-injury-after-experimental-subarachnoid-hemorrhage
#8
Tomoko Mutoh, Tatsushi Mutoh, Kazumasu Sasaki, Kazuhiro Nakamura, Yasuko Tatewaki, Tatsuya Ishikawa, Yasuyuki Taki
BACKGROUND AND PURPOSE: Acute cerebral hypoperfusion following subarachnoid hemorrhage (SAH) is highly related to the pathogenesis of delayed cerebral ischemia (DCI), but the therapeutic option is poorly available. This study aimed to clarify the effect of milrinone (MIL) on cerebral blood flow (CBF) and related outcomes after experimental SAH. METHODS: Twenty-seven male C57BL/6 mice were assigned to either sham surgery (SAH-sham; n=6), SAH induced by endovascular perforation (control; n=10), or SAH followed by cardiac support with intravenous MIL (n=11) performed 1...
January 6, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28057839/niacin-promotes-cardiac-healing-after-myocardial-infarction-through-activation-of-the-myeloid-prostaglandin-d2-receptor-subtype-1
#9
Deping Kong, Juanjuan Li, Yujun Shen, Guihu Liu, Shengkai Zuo, Bo Tao, Yong Ji, Ankang Lu, Michael Lazarus, Richard M Breyer, Ying Yu
Niacin is a well-established drug used to lower cholesterol and prevent cardiovascular disease (CVD) events. However, niacin also causes cutaneous flushing side effects due to release of the proresolution mediator prostaglandin (PG) D2. Recent randomized clinical trials have demonstrated that addition of niacin with laropiprant (a PGD2 receptor subtype 1 [DP1] blocker) to statin-based therapies does not significantly decrease the risk of CVD events but increases the risk of serious adverse events. Here, we tested whether, and how, niacin beneficial effects in vivo myocardial ischemia requires the activation of the PGD2/DP1 axis...
January 5, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28053858/a-major-miss-in-prognostication-after-cardiac-arrest-burst-suppression-and-brain-healing
#10
Danielle A Becker, Nicholas D Schiff, Lance B Becker, Manisha G Holmes, Joseph J Fins, James M Horowitz, Orrin Devinsky
We report a case with therapeutic hypothermia after cardiac arrest where meaningful recovery far exceeded anticipated negative endpoints following cardiac arrest with loss of brainstem reflexes and subsequent status epilepticus. This man survived and recovered after an out-of-hospital cardiac arrest followed by a 6-week coma with absent motor responses and 5 weeks of burst suppression. Standard criteria suggested no chance of recovery. His recovery may relate to the effect of burst-suppression on EEG to rescue neurons near neuronal cell death...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/28046043/effects-of-sleep-deprivation-on-phase-synchronization-as-assessed-by-wavelet-phase-coherence-analysis-of-prefrontal-tissue-oxyhemoglobin-signals
#11
Lingguo Bu, Ming Zhang, Jianfeng Li, Fangyi Li, Heshan Liu, Zengyong Li
PURPOSE: To reveal the physiological mechanism of the decline in cognitive function after sleep deprivation, a within-subject study was performed to assess sleep deprivation effects on phase synchronization, as revealed by wavelet phase coherence (WPCO) analysis of prefrontal tissue oxyhemoglobin signals. MATERIALS AND METHODS: Twenty subjects (10 male and 10 female, 25.5 ± 3.5 years old) were recruited to participate in two tests: one without sleep deprivation (group A) and the other with 24 h of sleep deprivation (group B)...
2017: PloS One
https://www.readbyqxmd.com/read/28045326/non-occlusive-mesenteric-ischaemia-in-out-of-hospital-cardiac-arrest-survivors
#12
Raphael Wurm, Anna Cho, Henrike Arfsten, Raphael van Tulder, Christian Wallmüller, Philipp Steininger, Fritz Sterz, Kristina Tendl, Csilla Balassy, Klaus Distelmaier, Martin Hülsmann, Gottfried Heinz, Christopher Adlbrecht
BACKGROUND AND AIM OF THE STUDY: Non-occlusive mesenteric ischaemia (NOMI) is characterised by hypoperfusion of the intestines without evidence of mechanical obstruction, potentially leading to extensive ischaemia and necrosis. Low cardiac output appears to be a major risk factor. Cardiopulmonary resuscitation aims at restoring blood flow after cardiac arrest. However, post restoration of spontaneous circulation, myocardial stunning limits immediate recovery of sufficient cardiac function...
January 1, 2017: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/28035621/implications-of-dynamic-changes-in-mir-192-expression-in-ischemic-acute-kidney-injury
#13
Lulu Zhang, Yuan Xu, Song Xue, Xudong Wang, Huili Dai, Jiaqi Qian, Zhaohui Ni, Yucheng Yan
PURPOSE: Ischemia-reperfusion injury (IRI) is a major cause of acute kidney injury (AKI) with poor outcomes. While many important functions of microRNAs (miRNAs) have been identified in various diseases, few studies reported miRNAs in acute kidney IRI, especially the dynamic changes in their expression and their implications during disease progression. METHODS: The expression of miR-192, a specific kidney-enriched miRNA, was assessed in both the plasma and kidney of IRI rats at different time points after kidney injury and compared to renal function and kidney histological changes...
December 29, 2016: International Urology and Nephrology
https://www.readbyqxmd.com/read/28032322/perceived-cognition-after-percutaneous-coronary-intervention-association-with-quality-of-life-mood-and-fatigue-in-the-thoresci-study
#14
Stefanie Duijndam, Johan Denollet, Ivan Nyklíček, Nina Kupper
PURPOSE: Percutaneous coronary intervention (PCI) is a common invasive procedure for the treatment of coronary artery diseases. Long-term cognitive functioning after PCI and its association with health-related quality of life (HRQL) and psychological factors is relatively unknown. The aim of this study is to examine whether perceived cognitive functioning during the year after PCI is associated with HRQL over this time period, and whether mood, fatigue, and age are associated with changes in perceived cognition and HRQL...
December 28, 2016: International Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28029641/angiogenic-imbalance-and-residual-myocardial-injury-in-recovered-peripartum-cardiomyopathy-patients
#15
Sorel Goland, Jean Marc Weinstein, Adi Zalik, Rafael Kuperstein, Liaz Zilberman, Sara Shimoni, Michael Arad, Tuvia Ben Gal, Jacob George
BACKGROUND: Recent studies suggest that angiogenic imbalance during pregnancy may lead to acute peripartum cardiomyopathy (PPCM). We propose that angiogenic imbalance and residual cardiac dysfunction may exist even after recovery from PPCM. METHODS AND RESULTS: Twenty-nine women at least 12 months after presentation with PPCM, who exhibited recovery of left ventricular (LV) ejection fraction (≥50%), were included in the study (mean age 35±6 years, LV ejection fraction 61...
November 2016: Circulation. Heart Failure
https://www.readbyqxmd.com/read/28029066/cardiac-autonomic-and-haemodynamic-recovery-after-a-single-session-of-aerobic-exercise-with-and-without-blood-flow-restriction-in-older-adults
#16
Marina Lívia Venturini Ferreira, Amanda Veiga Sardeli, Giovana Vergínia De Souza, Valéria Bonganha, Lucas Do Carmo Santos, Alex Castro, Cláudia Regina Cavaglieri, Mara Patrícia Traina Chacon-Mikahil
This study investigated the autonomic and haemodynamic responses to different aerobic exercise loads, with and without blood flow restriction (BFR). In a crossover study, 21 older adults (8 males and 13 females) completed different aerobic exercise sessions: low load without BFR (LL) (40% VO2max), low load with BFR (LL-BFR) (40% VO2max + 50% BFR) and high load without BFR (HL) (70% VO2max). Heart rate variability and haemodynamic responses were recorded during rest and throughout 30 min of recovery. HL reduced R-R interval, the root mean square of successive difference of R-R intervals and high frequency during 30 min of recovery at a greater magnitude compared with LL and LL-BFR...
December 28, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28024120/ion-channels-long-qt-syndrome-and-arrhythmogenesis-in-ageing
#17
Kamalan Jeevaratnam, Karan R Chadda, Samantha C Salvage, Haseeb Valli, Shiraz Ahmad, Andrew A Grace, Christopher L-H Huang
Ageing is associated with increased prevalences of both atrial and ventricular arrhythmias, reflecting disruption of the normal sequence of ion channel activation and inactivation generating the propagated cardiac action potential. Experimental models with specific ion channel genetic modifications have helped clarify the interacting functional roles of ion channels and how their dysregulation contributes to arrhythmogenic processes at the cellular and systems level. They have also investigated interactions between these ion channel abnormalities and age-related processes in producing arrhythmic tendency...
December 26, 2016: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28017781/inotropic-support-against-early-brain-injury-improves-cerebral-hypoperfusion-and-outcomes-in-a-murine-model-of-subarachnoid-hemorrhage
#18
Tomoko Mutoh, Tatsushi Mutoh, Kazuhiro Nakamura, Kazumasu Sasaki, Yasuko Tatewaki, Tatsuya Ishikawa, Yasuyuki Taki
Early brain injury/ischemia is a recent therapeutic target that contributes to triggering delayed cerebral ischemia (DCI) in the setting of subarachnoid hemorrhage (SAH). This study aimed to determine the role of dobutamine for inotropic cardiac support in improving cerebral blood flow (CBF) and outcomes after experimental SAH, mediated by hypoxia-inducible factor (HIF). Thirty-one mice were subjected to SAH by endovascular perforation, and assigned to either 2% isoflurane postconditioning performed between 1 and 2...
December 23, 2016: Brain Research Bulletin
https://www.readbyqxmd.com/read/28011801/impact-of-haemodynamic-sonr-sensor-on-monitoring-of-left-ventricular-function-in-patients-undergoing-cardiac-resynchronization-therapy
#19
Stefania Sacchi, Paolo Pieragnoli, Giuseppe Ricciardi, Gino Grifoni, Luigi Padeletti
AIMS: The haemodynamic SonR sensor is able to measure myocardial contractility. The isometric effort is useful in quantifying left ventricular (LV) performance. We investigated the amplitude changes in SonR signal over time and during static exercise according to the recovery of the left ventricle. METHODS AND RESULTS: Twenty five patients [18 male, 70 ± 8 years, LV ejection fraction (LVEF) 29 ± 5%, in sinus rhythm] underwent biventricular SonR implantable cardioverter defibrillator implant...
December 23, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28011590/cardiac-sympathetic-innervation-via-the-middle-cervical-and-stellate-ganglia-and-anti-arrhythmic-mechanism-of-bilateral-stellectomy
#20
Tadanobu Irie, Kentaro Yamakawa, David Hamon, Keijiro Nakamura, Kalyanam Shivkumar, Marmar Vaseghi
Cardiac sympathetic denervation, CSD, is reported to reduce burden of ventricular tachy-arrhythmias (VT/VF) in cardiomyopathy patients, but the mechanisms behind this benefit are unknown. In addition, the relative contribution to cardiac innervation of the middle cervical ganglia (MCG), which may contain cardiac neurons, and is not removed during this procedure, is unclear. The purpose of this study was to compare sympathetic innervation of the heart via the MCG vs. stellate ganglia, assess effects of bilateral CSD on cardiac function and VT/VF, and determine changes in cardiac sympathetic innervation after CSD to elucidate mechanisms of benefit in 6 normal and 18 infarcted pigs...
December 23, 2016: American Journal of Physiology. Heart and Circulatory Physiology
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