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Myocardial ischaemia

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https://www.readbyqxmd.com/read/27930802/ap39-a-mitochondria-targeting-hydrogen-sulfide-h2-s-donor-protects-against-myocardial-reperfusion-injury-independently-of-salvage-kinase-signalling
#1
Qutuba G Karwi, Julia Bornbaum, Kerstin Boengler, Roberta Torregrossa, Matthew Whiteman, Mark E Wood, Rainer Schulz, Gary F Baxter
BACKGROUND AND PURPOSE: H2 S protects myocardium against ischaemia-reperfusion injury. This protection may involve the cytosolic reperfusion injury salvage kinase (RISK) pathway, but direct effects on mitochondrial function are possible. Here, we investigated the potential cardioprotective effect of mitochondria-specific H2 S donor, AP39, at reperfusion against ischaemia/reperfusion injury. EXPERIMENTAL APPROACH: Anaesthetised rats underwent myocardial (30 min ischaemia/120 min reperfusion) with randomisation to receive interventions prior to reperfusion: vehicle, AP39 (0...
December 8, 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27919610/renal-artery-stenosis-in-patients-with-peripheral-artery-disease-prevalence-risk-factors-and-long-term-prognosis
#2
V Aboyans, I Desormais, J Magne, G Morange, D Mohty, P Lacroix
OBJECTIVE/BACKGROUND: The objective was to determine the prevalence and clinical determinants of renal artery stenosis (RAS) in patients undergoing digital subtraction angiography (DSA) for the assessment of peripheral artery disease (PAD), and to evaluate its prognostic significance. METHODS: All DSAs performed from January 2000 to January 2006 were retrospectively reviewed for assessment of PAD in patients naive for any prior revascularisation of lower-limb arteries...
December 2, 2016: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/27885432/immunohistochemical-detection-of-early-myocardial-infarction-a-systematic-review
#3
REVIEW
Cristina Mondello, Luigi Cardia, Elvira Ventura-Spagnolo
The postmortem diagnosis of early myocardial infarction is a challenge for forensic pathologists because the routine histology is neither specific. Many authors have suggested the use of the immunohistochemistry to fill the gaps in the histological diagnosis of early myocardial infarction. This review aims to analyse advances of immunohistochemical detection of early cardiac damage due to ischaemia. To this purpose, we reviewed experimental studies that investigated immunohistochemical markers and their estimated timing of expression...
November 25, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27884851/influence-of-preinfarction-angina-and-coronary-collateral-blood-flow-on-the-efficacy-of-remote-ischaemic-conditioning-in-patients-with-st-segment-elevation-myocardial-infarction-post-hoc-subgroup-analysis-of-a-randomised-controlled-trial
#4
Kasper Pryds, Morten Bøttcher, Astrid Drivsholm Sloth, Kim Munk, Michael Rahbek Schmidt, Hans Erik Bøtker
OBJECTIVES: Remote ischaemic conditioning (RIC) confers cardioprotection in patients with ST segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (pPCI). We investigated whether preinfarction angina and coronary collateral blood flow (CCBF) to the infarct-related artery modify the efficacy of RIC. DESIGN: Post hoc subgroup analysis of a randomised controlled trial. PARTICIPANTS: A total of 139 patients with STEMI randomised to treatment with pPCI or RIC+pPCI...
November 24, 2016: BMJ Open
https://www.readbyqxmd.com/read/27881061/traditional-and-alternative-therapies-for-refractory-angina
#5
Duygu Kocyigit, Kadri Murat Gurses, Muhammed Ulvi Yalcin, Lale Tokgozoglu
Refractory angina (RFA) is an unfavourable condition that is characterized with persistent angina due to reversible myocardial ischaemia in patients with coronary artery disease that remains uncontrollable despite an optimal combination of pharmacological agents and revascularization. Despite significant advances in revascularization techniques and agents used in pharmacological therapy, there is a significant population suffering from RFA and the global prevalence is even increasing. Anti- anginal treatment and secondary risk-factor modification are the traditional approaches for this group of patients...
November 23, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27868059/intramyocardial-injection-of-sirnas-can-efficiently-establish-myocardial-tissue-specific-renalase-knockdown-mouse-model
#6
Kun Huang, Ju Liu, Hui Zhang, Jiliang Wang, Huili Li
Ischaemia/reperfusion (I/R) injury will cause additional death of cardiomyocytes in ischaemic heart disease. Recent studies revealed that renalase was involved in the I/R injury. So, the myocardial tissue-specific knockdown mouse models were needed for the investigations of renalase. To establish the mouse models, intramyocardial injection of siRNAs targeting renalase was performed in mice. The wild distribution and high transfection efficiency of the siRNAs were approved. And the renalase expression was efficiently suppressed in myocardial tissue...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27866432/maternal-cardiac-haemodynamics-in-severe-pre-eclampsia-complicated-by-acute-pulmonary-oedema-a-review
#7
I Bhorat, D P Naidoo, J Moodley
AIM: To establish alterations in maternal cardiac haemodynamics and function using electrocardiography and echocardiography in severe pre-eclampsia complicated by acute pulmonary oedema. METHODS: An extensive literature search including any research articles, randomised control trials, observational study, case report or expert or consensus statement pertaining to severe pre-eclampsia, eclampsia, hypertensive crises of pregnancy, pulmonary oedema, maternal cardiac haemodynamics, Holter monitoring and maternal echocardiography was done...
November 21, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27866136/biodegradable-polymer-based-argatroban-eluting-cobalt-chromium-stent-jf-04-for-treatment-of-native-coronary-lesions-final-results-of-the-first-in-man-study-and-lessons-learned
#8
Yoshihiro Morino, Tetsuya Tobaru, Satoshi Yasuda, Kazuaki Kataoka, Kengo Tanabe, Atsushi Hirohata, Ken Kozuma, Takeshi Kimura
AIMS: The aim of the study was to investigate the six-month angiographic and nine-month clinical follow-up outcomes in a first-in-man study using the biodegradable polymer-based cobalt-chromium argatroban-eluting stent (JF-04) for treatment of native coronary atherosclerotic lesions. METHODS AND RESULTS: A total of 31 patients with either stable or unstable angina, or silent myocardial ischaemia, exhibiting de novo coronary lesions were enrolled at seven Japanese sites...
November 20, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27866134/one-year-clinical-outcomes-of-patients-treated-with-everolimus-eluting-bioresorbable-vascular-scaffolds-versus-everolimus-eluting-metallic-stents-a-propensity-score-comparison-of-patients-enrolled-in-the-absorb-extend-and-spirit-trials
#9
José de Ribamar Costa, Alexandre Abizaid, Antonio L Bartorelli, Robert Whitbourn, Nigel Jepson, Marco Perin, Clemens Steinwender, Marrianne Stuteville, Divine Ediebah, Krishnankutty Sudhir, Patrick W Serruys
AIMS: We sought to compare the outcomes of low/moderate complexity patients treated with the Absorb BVS from the ABSORB EXTEND trial with patients treated with the XIENCE everolimus-eluting stent (EES), using propensity score (PS) matching of pooled data from the SPIRIT trials (SPIRIT II, SPIRIT III, SPIRIT IV) and the XIENCE V USA trial. METHODS AND RESULTS: ABSORB EXTEND was a prospective, single-arm, open-label clinical study in which 812 patients were enrolled at 56 sites...
November 20, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27843098/the-heart-of-epilepsy-current-views-and-future-concepts
#10
S Shmuely, M van der Lende, R J Lamberts, J W Sander, R D Thijs
Cardiovascular (CV) comorbidities are common in people with epilepsy. Several mechanisms explain why these conditions tend to co-exist including causal associations, shared risk factors and those resulting from epilepsy or its treatment. Various arrhythmias occurring during and after seizures have been described. Ictal asystole is the most common cause. The converse phenomenon, arrhythmias causing seizures, appears extremely rare and has only been reported in children following cardioinihibitory syncope. Arrhythmias in epilepsy may not only result from seizure activity but also from a shared genetic susceptibility...
October 26, 2016: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/27842619/congenital-coronary-artery-anomalies-in-adults-review-of-111-cases-from-a-single-centre-experience
#11
Yiğit Çanga, Tolga S Güvenç, Mehmet B Karataş, Ali N Çalık, Tolga Onuk, Veysel O Tanık, Barış Güngör, Osman Bolca
BACKGROUND: Coronary artery anomalies are a heterogeneous group of congenital disorders presenting with a wide spectrum of symptoms, ranging from vague chest pain to sudden cardiac death. Despite available data, there is no consensus about the classification, nomenclature, and outcomes of coronary anomalies in the normally connected heart. In this study, we aimed to investigate clinical and angiographic characteristics of coronary arterial anomalies, as well as the frequency of atherosclerotic involvement in anomalous coronaries, diagnosed at a tertiary referral centre...
November 15, 2016: Cardiology in the Young
https://www.readbyqxmd.com/read/27837380/nedd4-1-protects-against-ischaemia-reperfusion-induced-cardiomyocyte-apoptosis-via-the-pi3k-akt-pathway
#12
Wei Hu, Peng Zhang, Jun Gu, Qiang Yu, Dadong Zhang
Activation of the Akt pathway has been shown to protect the heart from ischaemia/reperfusion (I/R) injury. NEDD4-1 has been shown to positively regulate nuclear trafficking of the activated form of Akt. However, the role of NEDD4-1 in cardiac I/R injury remains to be elucidated. In the present study, Lentiviral vectors were constructed to overexpress or knockdown NEDD4-1 in H9c2 cardiomyocytes subjected to I/R injury or ischemic preconditioning (IPC). The results indicated that NEDD4-1 levels were decreased after I/R and increased after IPC in rat heart tissue and in H9c2 cardiomyocytes...
November 11, 2016: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/27810095/-myocardial-ischaemia-detection-in-women
#13
S Duval, M Leroux, Y Davienne, C Brasselet
Screening of myocardial ischemia refers to the use of one or more diagnostic tests for coronary heart disease with a dual objective of appropriateness and promptness. In women, as compared to men, the accuracy of the different tests is worse. Thus, to overcome this sex-related penalty, we must define a diagnosis strategy based on risk stratification, enabling the identification of patients requiring invasive investigations. This review discusses various non-invasive diagnostic tests focusing on a female-specific approach and defines the use of numerous diagnostic tests with respect to both risk stratification and symptoms...
October 31, 2016: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/27806987/assessment-and-classification-of-patients-with-myocardial-injury-and-infarction-in-clinical-practice
#14
REVIEW
Andrew R Chapman, Philip D Adamson, Nicholas L Mills
Myocardial injury is common in patients without acute coronary syndrome, and international guidelines recommend patients with myocardial infarction are classified by aetiology. The universal definition differentiates patients with myocardial infarction due to plaque rupture (type 1) from those due to myocardial oxygen supply-demand imbalance (type 2) secondary to other acute illnesses. Patients with myocardial necrosis, but no symptoms or signs of myocardial ischaemia, are classified as acute or chronic myocardial injury...
November 2, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27806897/comparison-of-an-everolimus-eluting-bioresorbable-scaffold-with-an-everolimus-eluting-metallic-stent-for-the-treatment-of-coronary-artery-stenosis-absorb-ii-a-3-year-randomised-controlled-single-blind-multicentre-clinical-trial
#15
Patrick W Serruys, Bernard Chevalier, Yohei Sotomi, Angel Cequier, Didier Carrié, Jan J Piek, Ad J Van Boven, Marcello Dominici, Dariusz Dudek, Dougal McClean, Steffen Helqvist, Michael Haude, Sebastian Reith, Manuel de Sousa Almeida, Gianluca Campo, Andrés Iñiguez, Manel Sabaté, Stephan Windecker, Yoshinobu Onuma
BACKGROUND: No medium-term data are available on the random comparison between everolimus-eluting bioresorbable vascular scaffolds and everolimus-eluting metallic stents. The study aims to demonstrate two mechanistic properties of the bioresorbable scaffold: increase in luminal dimensions as a result of recovered vasomotion of the scaffolded vessel. METHODS: The ABSORB II trial is a prospective, randomised, active-controlled, single-blind, parallel two-group, multicentre clinical trial...
November 19, 2016: Lancet
https://www.readbyqxmd.com/read/27805707/assessment-of-indirect-inflammatory-markers-in-patients-with-myocardial-bridging
#16
Levent Cerit
INTRODUCTION: Myocardial bridging (MB) is a congenital variant of the coronary artery in which a portion of the epicardial coronary artery takes an intramuscular course. Although it is considered a benign anomaly, it may lead to such complications as myocardial ischaemia, acute coronary syndrome, coronary spasm, exercise-induced dysrhythmias or even sudden death. MB may be related to increased inflammatory and atherosclerotic processes. This study was conducted with the aim of evaluating the relationship between neutrophil/lymphocyte ratio (NLR) and MB...
August 19, 2016: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/27805331/a-prospective-study-on-utility-of-exercise-treadmill-test-in-type-2-diabetes-mellitus-patients
#17
Meenaxi Sharda, Anil Kumar Soni, Shivraj Meena, Harish Nigam, Anuraj Singh
OBJECTIVE: Primary objective of this study was to access utility of exercise treadmill test in type-2 diabetes mellitus patients for detecting silent myocardial ischaemia and associated risk factors. METHODS: 75 DM-2 cases were enrolled in study of any age attending medical OPD. All cases were gone through detailed history and TMT procedure. RESULTS: There is higher prevalence of SMI in DM-2 patients. TMT positivity for inducible ischaemia in DM-2 patients were associated with increasing age, male sex, higher BMI, hypertension, smoking, alcoholism, microalbuminuria, macroalbuminuria and dyslipidemia...
November 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27785882/naoxintong-attenuates-ischaemia-reperfusion-injury-through-inhibiting-nlrp3-inflammasome-activation
#18
Yaqiong Wang, Xiaoxiang Yan, Shouling Mi, Zhang Li, Yuexiang Wang, Hong Zhu, Xiaolei Sun, Buchang Zhao, Chao Zhao, Yunzeng Zou, Kai Hu, Xiaoqiang Ding, Aijun Sun, Junbo Ge
Naoxintong (NXT) is a Chinese Materia Medica standardized product extracted from 16 various kinds of Chinese traditional herbal medicines including Salvia miltiorrhiza, Angelica sinensis, Astragali Radix. Naoxintong is clinically effective in treating ischaemia heart disease. Nucleotide-binding oligomerization domain-Like Receptor with a Pyrin domain 3 (NLRP3) inflammasome has been critically involved in myocardial ischaemia/reperfusion (I/R) injury. Here, we have been suggested that NXT might attenuate myocardial I/R injury via suppression of NLRP3 inflammasome activation...
October 26, 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27762529/acute-antero-inferior-wall-ischaemia-with-acute-ischaemic-stroke-caused-by-oral-ingestion-of-cannabis-in-a-young-male
#19
Naveen Kumar Tirkey, Shashank Gupta
Cannabis is a frequently used illicit recreational drug that is known to be associated with a variety of psychopharmacological effects. Negative somatic effects such as myocardial infarction and stroke have been reported, though, less frequently. Most of the literature available has focused on the complications due to smoked forms of cannabis (ganja and charas). Here we report a case of acute myocardial ischaemia with acute ischaemic stroke developing after oral ingestion of 'Bhang', a preparation of cannabis...
September 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27742593/helium-postconditioning-regulates-expression-of-caveolin-1-and-3-and-induces-risk-pathway-activation-after-ischaemia-reperfusion-in-cardiac-tissue-of-rats
#20
Moritz Flick, Martin Albrecht, Gezina T M L Oei, Renske Steenstra, Raphaela P Kerindongo, Coert J Zuurbier, Hemal H Patel, Markus W Hollmann, Benedikt Preckel, Nina C Weber
Caveolae, lipid enriched invaginations of the plasma membrane, are epicentres of cellular signal transduction. The structural proteins of caveolae, caveolins, regulate effector pathways in anaesthetic-induced cardioprotection, including the RISK pathway. Helium (He) postconditioning (HePoc) is known to mimic anaesthetic conditioning and to prevent damage from myocardial infarction. We hypothesize that HePoc regulates caveolin-1 and caveolin-3 (Cav-1 and Cav-3) expression in the rat heart and activates the RISK pathway...
October 11, 2016: European Journal of Pharmacology
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