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https://www.readbyqxmd.com/read/27911394/confirmation-of-myocardial-ischemia-and-reperfusion-injury-in-mice-using-surface-pad-electrocardiography
#1
Stephanie L C Scofield, Krishna Singh
Many animal models have been established for the study of myocardial remodeling and heart failure due to its status as the number one cause of mortality worldwide. In humans, a pathologic occlusion forms in a coronary artery and reperfusion of that occluded artery is considered essential to maintain viability of the myocardium at risk. Although essential for myocardial recovery, reperfusion of the ischemic myocardium creates its own tissue injury. The physiologic response and healing of an ischemia/reperfusion injury is different from a chronic occlusion injury...
November 24, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911381/a-novel-approach-for-the-administration-of-medications-and-fluids-in-emergency-scenarios-and-settings
#2
Akilesh Honasoge, Neal Lyons, Kathleen Hesse, Braden Parker, Robert Mokszycki, Kelly Wesselhoff, Rolla Sweis, Erik B Kulstad
The available routes of administration commonly used for medications and fluids in the acute care setting are generally limited to oral, intravenous, or intraosseous routes, but in many patients, particularly in the emergency or critical care settings, these routes are often unavailable or time-consuming to access. A novel device is now available that offers an easy route for administration of medications or fluids via rectal mucosal absorption (also referred to as proctoclysis in the case of fluid administration and subsequent absorption)...
November 9, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911047/modified-mrna-as-a-therapeutic-tool-to-induce-cardiac-regeneration-in-ischemic-heart-disease
#3
REVIEW
Yoav Hadas, Michael G Katz, Charles R Bridges, Lior Zangi
Ischemic heart disease (IHD) is a leading cause of morbidity and mortality in developed countries. Current pharmacological and interventional therapies provide significant improvement in the life quality of patient; however, they are mostly symptom-oriented and not curative. A high disease and economic burden of IHD requires the search for new therapeutic strategies to significantly improve patients' prognosis and quality of life. One of the main challenges during IHD is the massive loss of cardiomyocytes that possess minimal regenerative capacity...
December 2, 2016: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/27910082/impact-of-the-presence-of-chronically-occluded-coronary-artery-on-long-term-prognosis-of-patients-with-acute-st-segment-elevation-myocardial-infarction
#4
Maciej Lesiak, Monika Cugowska, Aleksander Araszkiewicz, Marek Grygier, Małgorzata Pyda, Włodzimierz Skorupski, Przemysław Mitkowski, Magdalena Łanocha, Stefan Grajek
BACKGROUND: Multivessel disease (MVD) is a significant risk factor in patients with acute ST-segment elevation myocardial infarction (STEMI). Whether the presence of chronic total occlusion (CTO) poses an additional hazard is still unknown. The objective of this study was to evaluate the impact of CTO on survival in STEMI patients. METHODS: The study group consisted of 836 STEMI patients treated with primary percutaneous coronary intervention (PCI). MVD was diagnosed in 52...
December 2, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27910059/gene-therapy-for-post-infarction-ventricular-tachycardia
#5
J Kevin Donahue
Cardiac arrhythmias are a leading cause of morbidity and mortality in the developed world. In particular, cardiac arrest or sudden cardiac death is the leading cause of death in these countries. Death generally results from a ventricular tachyarrhythmia, and pathology data have shown that cardiac arrest victims very frequently have evidence of coronary atherosclerosis with either acute ischemia or healed myocardial infarction. In this work, we describe an animal model that reproducibly has inducible ventricular tachyarrhythmias after healing of a myocardial infarction scar and a gene delivery method that allows gene transfer to the scar and surrounding myocardial tissues...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27910042/direct-cardiac-reprogramming-as-a-novel-therapeutic-strategy-for-treatment-of-myocardial-infarction
#6
Hong Ma, Li Wang, Jiandong Liu, Li Qian
Direct reprogramming of fibroblasts into induced cardiomyocytes (iCMs) holds great promise as a novel therapy for the treatment of heart failure, a common and morbid disease that is usually caused by irreversible loss of functional cardiomyocytes (CMs). Recently, we and others showed that in a murine model of acute myocardial infarction, delivery of three transcription factors, Gata4, Mef2c, and Tbx5 converted endogenous cardiac fibroblasts into functional iCMs. These iCMs integrated electrically and mechanically with surrounding myocardium, resulting in a reduction in scar size and an improvement in heart function...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27909767/interventional-therapies-in-acute-myocardial-infarction-complicated-by-cardiogenic-shock
#7
S de Waha, S Desch, G Fuernau, J Pöss, J Ledwoch, A Jobs, I Eitel, H Thiele
Cardiogenic shock remains the most common cause of death in patients with acute myocardial infarction. Early revascularization of the infarct-related artery has been shown to reduce mortality and is the therapeutic cornerstone. The optimal revascularization strategy of additional non-culprit lesions remains yet to be determined. Further, uncertainties exist with respect to access site choice, antiplatelet regimen as well as mechanical support devices. This review outlines current evidence on the interventional management of cardiogenic shock complicating acute myocardial infarction...
December 1, 2016: Herz
https://www.readbyqxmd.com/read/27909643/source-control-and-graft-preservation-using-negative-pressure-wound-therapy-with-antibiotic-instillation-a-case-report
#8
Victoria Gilbert, Timothy Kelly, Robert Grossi
Negative pressure wound therapy (NPWT) is widely used to treat many types of complex wounds, and the advent of the instillation and dwell time (NPWTi-d) technique has enhanced this system with the addition of automated treatment with topical solutions. In the field of vascular surgery, NPWT is utilized to help close wounds over underlying grafts; however keeping these wounds free of infection and avoiding large reoperation when infection occurs remains a challenge. In this case report we present a patient who required acute intervention for limb ischemia, with a large wound created in the groin for anastomosis of a prosthetic graft bypass...
October 31, 2016: Curēus
https://www.readbyqxmd.com/read/27909498/shock-lead-dislodgement-related-to-its-small-hair-pin-curve-in-a-pocket-a-case-of-ratchet-syndrome
#9
Yuka Taguchi, Kohei Matsushita, Toshiyuki Ishikawa, Yutaka Ogino, Hirooki Matsushita, Junya Hosoda, Katsumi Matsumoto, Satoshi Umemura
There have been few reports about ratchet syndrome. We report a case of ratchet syndrome caused by small hair-pin curve of lead that triggered the lead retract itself. A 69-year-old man with a past history of inferior wall myocardial infarction, presented with progressive congestive heart failure. He underwent implantation of cardiac resynchronization therapy with an implantable cardiac defibrillator (CRTD) at our hospital. At 33 days after implantation, shock lead dislodgement was revealed. X-ray showed that the lead tip was in left subclavian vein, leaving its screw out, and a large part of the proximal portion of the lead was retracted into the pocket, while the other two leads remained in appropriate positions and the device had not rotated...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909469/value-of-the-wearable-cardioverter-defibrillator-wcd-as-a-bridging-therapy-before-implantation-of-a-cardioverter-defibrillator-icd
#10
REVIEW
Priv- Doz, Dr Johannes Sperzel
Wearable cardioverter defibrillators (WCD), initially available in 2002, have recently experienced more routine use in many institutions as a means of preventing sudden cardiac death (SCD) prior to implantable cardioverter defibrillator (ICD) evaluation or implantation. WCD differ from ICD by their noninvasive nature, making them well suited for patient populations who have a chance for significant cardiac recovery (such as after an acute myocardial infarction). Despite their noninvasive nature, WCD treatment of sustained ventricular tachyarrhythmias is highly successful...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909280/-cardiac-failure-developing-eleven-years-after-coronary-artery-bypass-grafting-report-of-a-case
#11
Shingo Taguchi, Takashi Hachiya, Katsuhisa Onoguchi, Makoto Hanai, Makoto Sumi, Masataka Yamazaki, Masahito Yamashiro
We report a rare case of cardiac failure for intrapericardial hematoma 11 years after coronary artery bypass grafting. A 59-year-old man was admitted to our hospital with cardiac tamponade. Echocardiography and computed tomography scan showed severe compression of the left ventricle(LV) by a large mass sized about 5×8 cm. Coronary angiography showed total occlusion at circumflex branch (Cx) #11. The mass was diagnosed with intrapericardial hematoma. We performed removal of hematoma in the pericardial cavity, and removed hematoma had 126 g...
December 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27909142/disease-activity-and-increased-risk-of-cardiovascular-death-among-patients-with-psoriatic-arthritis
#12
Kristina Juneblad, Solbritt Rantapää-Dahlqvist, Gerd-Marie Alenius
OBJECTIVE: Recent studies indicate increased cardiovascular (CV) morbidity and mortality in patients with psoriatic arthritis (PsA), but results are inconsistent. This prompted our investigation of the mortality rate, cause of death, and incidence of acute CV events in patients from northern Sweden with PsA. METHODS: Patients with established PsA (464) were included. To calculate standardized mortality ratio (SMR) and standardized incidence ratio (SIR) for CV events, data were extracted from the National Causes of Death Register and the National Inpatient Care Register in Sweden, and compared with the general population...
December 2016: Journal of Rheumatology
https://www.readbyqxmd.com/read/27909014/sodium-4-phenylbutyrate-attenuates-myocardial-reperfusion-injury-by-reducing-the-unfolded-protein-response
#13
Osamu Takatori, Soichiro Usui, Masaki Okajima, Shuichi Kaneko, Hiroshi Ootsuji, Shin-Ichiro Takashima, Daisuke Kobayashi, Hisayoshi Murai, Hiroshi Furusho, Masayuki Takamura
BACKGROUND: The unfolded protein response (UPR) plays a pivotal role in ischemia-reperfusion (I/R) injury in various organs such as heart, brain, and liver. Sodium 4-phenylbutyrate (PBA) reportedly acts as a chemical chaperone that reduces UPR. In the present study, we evaluated the effect of PBA on reducing the UPR and protecting against myocardial I/R injury in mice. METHODS: Male C57BL/6 mice were subjected to 30-minute myocardial I/R, and were treated with phosphate-buffered saline (as a vehicle) or PBA...
December 1, 2016: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27908912/a-deep-proteome-analysis-identifies-the-complete-secretome-as-the-functional-unit-of-human-cardiac-progenitor-cells
#14
Sudhish Sharma, Rachana Mishra, Grace E Bigham, Brody Wehman, Mohd M Khan, Huichun Xu, Progyaparamita Saha, Young Ah Goo, Srinivisa R Datla, Ling Chen, Mohan E Tulapurkar, Bradley S Taylor, Peixin Yang, Sotirios K Karathanasis, David R Goodlett, Sunjay Kaushal
RATIONALE: Cardiac progenitor cells are an attractive cell type for tissue regeneration but their mechanism for myocardial remodeling is still unclear. OBJECTIVE: This investigation determines how chronological age influences the phenotypic characteristics and the secretome of human cardiac progenitor cells (CPCs), as well as their potential to recover injured myocardium. METHODS AND RESULTS: Adult (aCPCs) and neonatal (nCPCs) cells were derived from patients more than 40 years or less than one month of age, respectively, and their functional potential was determined in a rodent myocardial infarction (MI) model...
December 1, 2016: Circulation Research
https://www.readbyqxmd.com/read/27908892/resting-heart-rate-trajectory-pattern-predicts-arterial-stiffness-in-a-community-based-chinese-cohort
#15
Shuhua Chen, Weijuan Li, Cheng Jin, Anand Vaidya, Jingli Gao, Hui Yang, Shouling Wu, Xiang Gao
OBJECTIVE: To examine whether the long-term resting heart rate (RHR) pattern can predict the risk of having arterial stiffness in a large ongoing cohort study. APPROACH AND RESULTS: This community-based cohort included 12 554 participants in the Kailun study, who were free of myocardial infarction, stroke, arrhythmia, and cancer. We used latent mixture modeling to identify RHR trajectories in 2006, 2008, and 2010. We used multivariate linear regression model to examine the association between RHR trajectory patterns and the risk of having arterial stiffness, which was assessed by brachial-ankle pulse wave velocity in 2010 to 2016...
December 1, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/27908815/regional-variation-in-postoperative-myocardial-infarction-in-patients-undergoing-vascular-surgery-in-the-united-states
#16
Andrea M Steely, Peter W Callas, Daniel Neal, Salvatore T Scali, Philip P Goodney, Andres Schanzer, Jack L Cronenwett, Daniel J Bertges
OBJECTIVE: To assess for regional variation in the incidence of postoperative myocardial infarction (POMI) following non-emergent vascular surgery across the United States in order to identify potential areas for quality improvement initiatives. METHODS: We evaluated POMI rates across 17 regional Vascular Quality Initiative (VQI) groups comprised of 243 centers with 1,343 surgeons who performed 75,057 vascular operations from 2010-2014. Four procedures were included in the analysis: carotid endarterectomy (CEA, n=39,118), endovascular abdominal aortic aneurysm (AAA) repair (EVAR, n=15,106), infra-inguinal bypass (INFRA, n=17,176), and open infra-renal AAA repair (OAAA, n=3,657)...
November 28, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27908708/chlorogenic-acid-ameliorates-isoproterenol-induced-myocardial-injury-in-rats-by-stabilizing-mitochondrial-and-lysosomal-enzymes
#17
Palaniyandi Akila, Lourthurani Asaikumar, Lakshmanan Vennila
This study was deliberated to aspire the effects of chlorogenic acid (CGA) against myocardial infarction (MI) induced by Isoproterenol (ISO), in a rat model. In the pathology of MI, enzymes released due to the mitochondrial and lysosomal lipid peroxidation play an integral role. Induction of rats with ISO (85mg/kg BW) for 2 consecutive days resulted in a significant decrease in the activities of heart mitochondrial enzymes isocitrate dehydrogenase (ICDH), α-ketoglutarate dehydrogenase (α-KGDH), succinate dehydrogenase (SDH) and malate dehydrogenase (MDH)...
November 28, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27908607/impact-of-remote-ischaemic-preconditioning-on-major-clinical-outcomes-in-patients-undergoing-cardiovascular-surgery-a-meta-analysis-with-trial-sequential-analysis-of-32-randomised-controlled-trials
#18
Shifei Wang, Hairui Li, Nvqin He, Yili Sun, Shengcun Guo, Wangjun Liao, Yulin Liao, Yanmei Chen, Jianping Bin
BACKGROUND: The impact of remote ischaemic preconditioning (RIPC) on major clinical outcomes in patients undergoing cardiovascular surgery remains controversial. We systematically reviewed the available evidence to evaluate the potential benefits of RIPC in such patients. METHODS: PubMed, Embase, and Cochrane Library databases were searched for relevant randomised controlled trials (RCTs) conducted between January 2006 and March 2016. The pooled population of patients who underwent cardiovascular surgery was divided into the RIPC and control groups...
November 17, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27908351/pim1-kinase-overexpression-enhances-ckit-cardiac-stem-cell-cardiac-repair-following-myocardial-infarction-in-swine
#19
Shathiyah Kulandavelu, Vasileios Karantalis, Julia Fritsch, Konstantinos E Hatzistergos, Viky Y Loescher, Frederic McCall, Bo Wang, Luiza Bagno, Samuel Golpanian, Ariel Wolf, Justin Grenet, Adam Williams, Aaron Kupin, Aaron Rosenfeld, Sadia Mohsin, Mark A Sussman, Azorides Morales, Wayne Balkan, Joshua M Hare
BACKGROUND: Pim1 kinase plays an important role in cell division, survival, and commitment of precursor cells towards a myocardial lineage, and overexpression of Pim1 in ckit(+) cardiac stem cells (CSCs) enhances their cardioreparative properties. OBJECTIVES: The authors sought to validate the effect of Pim1-modified CSCs in a translationally relevant large animal preclinical model of myocardial infarction (MI). METHODS: Human cardiac stem cells (hCSCs, n = 10), hckit(+) CSCs overexpressing Pim1 (Pim1(+); n = 9), or placebo (n = 10) were delivered by intramyocardial injection to immunosuppressed Yorkshire swine (n = 29) 2 weeks after MI...
December 6, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27907885/complete-revascularization-versus-culprit-only-revascularization-in-st-segment-elevation-myocardial-infarction-and-multivessel-disease-patients-undergoing-primary-percutaneous-coronary-intervention-a-meta-analysis-and-trial-sequential-analysis
#20
REVIEW
Chong-Hui Wang, Shu-Yang Zhang, Xiao-Feng Jin
The present study compared the outcomes of complete revascularization (CR) and culprit-only revascularization (COR) performed during primary percutaneous coronary intervention (PCI) in patients with ST-segment elevation myocardial infarction (STEMI) and multivessel disease through a meta-analysis in order to determine which strategy is more appropriate. Published randomized controlled trials (RCTs) were retrieved from the PubMed, EMBASE, and CENTRAL databases. Eight RCTs with 2060 patients were selected (1080 patients underwent CR [immediate (ICR) or staged (SCR)] and 980 patients underwent COR)...
November 10, 2016: International Journal of Cardiology
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