keyword
MENU ▼
Read by QxMD icon Read
search

Cardiac mechanics

keyword
https://www.readbyqxmd.com/read/29334406/dasatinib-induced-pulmonary-arterial-hypertension
#1
REVIEW
Nurgül Özgür Yurttaş, Ahmet Emre Eşkazan
Drug-induced (Group 1) pulmonary hypertension (PH) is an important subgroup of PH involving dasatinib as a likely related agent, which is a second-generation tyrosine kinase inhibitor (TKI), that is used in the treatment of chronic myeloid leukemia (CML). The mechanism of dasatinib-induced pulmonary arterial hypertension (PAH) is unclear. However, the occurence of PAH at a late onset in CML patients suggests a chronic pathological mechanism with an insidious onset rather than an acute inflammatory or cardiac etiology...
January 15, 2018: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29332590/the-potential-role-of-oxidative-stress-in-cardiac-hypertrophy-a-narrative-review
#2
Abeer Rababa H, Ashley Guillory, Rima Mustafa, Tamara Hijjawi
BACKGROUND: A common phenotype associated with heart failure is the development of cardiac hypertrophy. Cardiac hypertrophy occurs in response to stress, such as hypertension, coronary vascular disease, or myocardial infarction. The most critical pathophysiological conditions involved may include dilated hypertrophy, fibrosis and contractile malfunction. The intricate pathophysiological mechanisms of cardiac hypertrophy have been the core of several scientific studies, which may help in opening a new avenue in preventive and curative procedures...
January 11, 2018: Current Cardiology Reviews
https://www.readbyqxmd.com/read/29332573/torsades-de-pointes-in-patients-with-polymyalgia-rheumatica
#3
Pietro Enea Lazzerini, Iacopo Bertolozzi, Maurizio Acampa, Rosella Fulceri, Franco Laghi-Pasini, Pier Leopoldo Capecchi
Polymyalgia rheumatica (PMR) represents the most common inflammatory rheumatic disease of the elderly. It is characterized by synovitis of proximal joints and extra-articular synovial structures, along with chronic high-grade systemic inflammation. PMR is closely related to giant cell arteritis (GCA), a large-vessel vasculitis that involves the major branches of the aorta, particularly the extracranial branches of carotid artery including temporal arteries. It is currently believed that PMR and GCA may represent different manifestations of the same disease process...
January 10, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29332571/role-of-heart-rate-reduction-in-the-management-of-myocarditis
#4
Chen Guang-Yi, Ge Li-Sha, Li Yue-Chun
The morbidity of myocarditis demonstrates an upward tendency by years, is commonly defined as the inflammation of myocytes and is caused by multiple factors. With the development of the molecular biological technique, great breakthroughs in the diagnosis and understanding of pathophysiological mechanisms of myocarditis have recently been achieved. Several questions remain unresolved, however, including standard treatment approaches to myocarditis, which remain controversial and ambiguous. Heart rate, as an independent risk factor, has been shown to be related to cardiac disease...
January 10, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29332515/vasoplegia-in-patients-with-sepsis-and-septic-shock-pathways-and-mechanisms
#5
A-M Burgdorff, M Bucher, J Schumann
Sepsis is one of the most frequent causes of death among patients in intensive care units. Many therapeutic strategies have been assessed without the desired success rates. A key risk factor for death is hypotension due to vasodilatation with vascular hyposensitivity. However, the pathways underlying this process remain unclear. Endotoxemia induces inflammatory mediators, and this is followed by vasoplegia and decreased cardiac contractility. Although inhibition of these mediators diminishes mortality rates in animal models, this phenomenon has not been confirmed in humans...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29332246/an-historical-perspective-of-the-discovery-of-titin-filaments-part-2
#6
REVIEW
Cristobal G Dos Remedios
In 2017, a Special Issue of Biophysical Reviews was devoted to "Titin and Its Binding Partners. The issue contained a review: "An historical perspective of the discovery of titin filaments" by dos Remedios and Gilmour that was intended to be a history of the discovery of the giant protein titin, previously named connectin. The review took readers back to the earliest discovery of the so-called third filament component of skeletal and cardiac muscle sarcomeres and ended in 1969. Recently, my colleague Shin'ichi Ishiwata gently reminded me of two papers published in 1990 and 1993 that were unwittingly omitted from the original historical perspective...
January 13, 2018: Biophysical Reviews
https://www.readbyqxmd.com/read/29331700/effects-of-macrophage-migration-inhibitory-factor-on-cardiac-reperfusion-injury-in-mice-with-depression-induced-by-constant-darkness
#7
Lu-Yuan Tao, Ming-Yuan Huang, Saroj-Thapa, Jiao-Ni Wang, Shao-Ze Wu, Fei He, Kai-Yu Huang, Yang-Jing Xue, Lingwei-Jin, Lian-Ming Liao, Ji-Fei Tang, Kang-Ting Ji
RATIONALE: Depression is associated with coronary artery disease and increases adverse outcomes and mortality in patients with acute myocardial infarction, but the underlying pathophysiological mechanisms remain unclear. OBJECTIVE: To evaluate the effect of macrophage migration inhibitory factor (MIF) on cardiac ischemia-reperfusion (I/R) injury in mice with constant darkness-induced depression. METHODS AND RESULTS: Twenty C57BL/6 mice (8 weeks old, male) were randomly divided into 2 groups: one group was housed in a 12h light/dark cycle environment (LD) and the other in a constant darkness environment (DD)...
December 27, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29331689/baicalin-inhibits-pressure-overload-induced-cardiac-fibrosis-through-regulating-ampk-tgf-%C3%AE-smads-signaling-pathway
#8
Yichuan Xiao, Jiantao Ye, Ying Zhou, Junjun Huang, Xiawen Liu, Biyun Huang, Liu Zhu, Bo Wu, Genshui Zhang, Yi Cai
AMP-activated protein kinase (AMPK) is a central regulator of multiple metabolic pathways. It has been shown that activation of AMPK could inhibit fibroblast proliferation and extracellular matrix (ECM) accumulation, thereby suppressing cardiac fibrosis. Baicalin, the major component found in skullcap, possesses multiple protective effects on the cardiovascular system. However, little is known about the effect of baicalin on cardiac fibrosis and the molecular mechanism by which baicalin exerts its anti-fibrotic effects has not been investigated...
January 10, 2018: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29331499/hspb7-is-a-cardioprotective-chaperone-facilitating-sarcomeric-proteostasis
#9
Emily J Mercer, Yi-Fan Lin, Leona Cohen-Gould, Todd Evans
Small heat shock proteins are chaperones with variable mechanisms of action. The function of cardiac family member Hspb7 is unknown, despite being identified through GWAS as a potential cardiomyopathy risk gene. We discovered that zebrafish hspb7 mutants display mild focal cardiac fibrosis and sarcomeric abnormalities. Significant mortality was observed in adult hspb7 mutants subjected to exercise stress, demonstrating a genetic and environmental interaction that determines disease outcome. We identified large sarcomeric proteins FilaminC and Titin as Hspb7 binding partners in cardiac cells...
January 10, 2018: Developmental Biology
https://www.readbyqxmd.com/read/29331378/loss-of-zebrafish-smyd1a-interferes-with-myofibrillar-integrity-without-triggering-the-misfolded-myosin-response
#10
Christoph Paone, Steven Rudeck, Christelle Etard, Uwe Strähle, Wolfgang Rottbauer, Steffen Just
Sarcomeric protein turnover needs to be tightly balanced to assure proper assembly and renewal of sarcomeric units within muscle tissues. The mechanisms regulating these fundamental processes are only poorly understood, but of great clinical importance since many cardiac and skeletal muscle diseases are associated with defective sarcomeric organization. The SET- and MYND domain containing protein 1b (Smyd1b) is known to play a crucial role in myofibrillogenesis by functionally interacting with the myosin chaperones Unc45b and Hsp90α1...
January 10, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29331178/multiple-mechanical-support-modalities-and-cardiac-transplantation-in-a-young-child-with-corrected-transposition
#11
Ronald K Woods, Robert A Neibler, Steven J Kindel, Michael E Mitchell, James S Tweddell, Viktor Hraska
No abstract text is available yet for this article.
December 13, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29331057/manifestations-and-mechanisms-of-myocardial-lipotoxicity-in-obesity
#12
Arthur C Sletten, Linda R Peterson, Jean E Schaffer
Environmental and socioeconomic changes over the past thirty years have contributed to a dramatic rise in the worldwide prevalence of obesity. Heart disease is among the most serious health risks of obesity, with increases in both atherosclerotic coronary heart disease and heart failure among obese individuals. In this review, we focus on primary myocardial alterations in obesity that include hypertrophic remodeling and diastolic dysfunction. Obesity-associated perturbations in myocardial and systemic lipid metabolism are important contributors to cardiovascular complications of obesity...
January 13, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29330880/concise-review-optimized-strategies-for-stem-cell-based-therapy-in-myocardial-repair-clinical-translatability-and-potential-limitation
#13
REVIEW
Rongrong Wu, Xinyang Hu, Jian'an Wang
Ischemic heart diseases (IHDs) remain major public health problems with high rates of morbidity and mortality worldwide. Despite significant advances, current therapeutic approaches are unable to rescue the extensive and irreversible loss of cardiomyocytes caused by severe ischemia. Over the past 16 years, stem cell-based therapy has been recognized as an innovative strategy for cardiac repair/regeneration and functional recovery after IHDs. Although substantial preclinical animal studies using a variety of stem/progenitor cells have shown promising results, there is a tremendous degree of skepticism in the clinical community as many stem cell trials do not confer any beneficial effects...
January 13, 2018: Stem Cells
https://www.readbyqxmd.com/read/29330683/cardiac-function-during-weaning-failure-the-role-of-diastolic-dysfunction
#14
Ferran Roche-Campo, Alexandre Bedet, Emmanuel Vivier, Laurent Brochard, Armand Mekontso Dessap
BACKGROUND: Cardiac dysfunction is a common cause of weaning failure. Weaning shares some similarities with a cardiac stress test and may challenge active phases of the cardiac cycle-like ventricular contractility and relaxation. This study aimed at assessing systolic and diastolic function during the weaning process and scrutinizing their dynamics during weaning trials. METHODS: Echocardiography was performed during baseline ventilator settings to assess cardiac function at the initiation of the weaning process and at the start and the end of consecutive weaning trials (performed at day-1, day-2, and before extubation if applicable) to explore the evolution of left ventricle contractility and relaxation in a subset of patients...
January 9, 2018: Annals of Intensive Care
https://www.readbyqxmd.com/read/29330638/predictors-of-severe-postoperative-hyperglycemia-after-cardiac-surgery-in-infants-a-single-center-retrospective-observational-study
#15
Natsuhiro Yamamoto, Tomoya Irie, Shunsuke Takaki, Osamu Yamaguchi, Takahisa Goto
PURPOSE: Hyperglycemia is a common issue in infants after cardiac surgery for congenital heart disease. Poor glycemic control is suspected to be associated with adverse postoperative outcomes. This study was performed to investigate clinical factors contributing to hyperglycemia in the perioperative period in infats. METHODS: A total of 69 infants (aged 1-12 months) who were admitted to Yokohama City University Hospital Intensive Care Unit (ICU) after surgical repair of congenital heart diseases with cardiopulmonary bypass (CPB) were retrospectively analysed...
January 12, 2018: Journal of Anesthesia
https://www.readbyqxmd.com/read/29330154/novel-wearable-seismocardiography-and-machine-learning-algorithms-can-assess-clinical-status-of-heart-failure-patients
#16
Omer T Inan, Maziyar Baran Pouyan, Abdul Q Javaid, Sean Dowling, Mozziyar Etemadi, Alexis Dorier, J Alex Heller, A Ozan Bicen, Shuvo Roy, Teresa De Marco, Liviu Klein
BACKGROUND: Remote monitoring of patients with heart failure (HF) using wearable devices can allow patient-specific adjustments to treatments and thereby potentially reduce hospitalizations. We aimed to assess HF state using wearable measurements of electrical and mechanical aspects of cardiac function in the context of exercise. METHODS AND RESULTS: Patients with compensated (outpatient) and decompensated (hospitalized) HF were fitted with a wearable ECG and seismocardiogram sensing patch...
January 2018: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29329164/a-systematic-review-of-risk-factors-associated-with-cognitive-impairment-after-pediatric-critical-illness
#17
Alicia G Kachmar, Sharon Y Irving, Cynthia A Connolly, Martha A Q Curley
OBJECTIVES: To identify risk factors associated with cognitive impairment as assessed by neuropsychologic tests in neurotypical children after critical illness. DATA SOURCES: For this systematic review, we searched the Cochrane Library, Scopus, PubMed, Ovid, Embase, and CINAHL databases from January 1960 to March 2017. STUDY SELECTION: Included were studies with subjects 3-18 years old at the time of post PICU follow-up evaluation and use of an objective standardized neuropsychologic test with at least one cognitive functioning dimension...
January 11, 2018: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29329111/severe-peri-ictal-respiratory-dysfunction-is-common-in-dravet-syndrome
#18
YuJaung Kim, Eduardo Bravo, Caitlin K Thirnbeck, Lori A Smith-Mellecker, Se Hee Kim, Brian K Gehlbach, Linda C Laux, Douglas R Nordli Jr, George B Richerson
Dravet syndrome (DS) is a severe childhood-onset epilepsy commonly due to mutations of the sodium channel gene SCN1A. DS patients have a high risk of sudden unexplained death in epilepsy (SUDEP), believed to be due to cardiac mechanisms. Here we show that DS patients have peri-ictal respiratory dysfunction. One patient who had severe and prolonged postictal hypoventilation later died of SUDEP. Mice with an Scn1aR1407X/+ loss of function mutation died after spontaneous and heat-induced seizures due to central apnea followed by progressive bradycardia...
January 11, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29328448/association-between-ace2-ace-balance-and-pneumocyte-apoptosis-in-a-porcine-model-of-acute-pulmonary-thromboembolism-with-cardiac-arrest
#19
Hong-Li Xiao, Lian-Xing Zhao, Jun Yang, Nan Tong, Le An, Qi-Tong Liu, Miao-Rong Xie, Chun-Sheng Li
Acute pulmonary embolism (APE) is frequently reported in patients with cardiac arrest (CA) in emergency care. Pneumocyte apoptosis is commonly observed in the lungs following an APE. An important pathological mechanism evoking apoptosis during a lipopolysaccharide‑induced acute lung injury is the angiotensin‑converting enzyme 2 (ACE2)/ACE imbalance. The present study uses a porcine model to examine the anti‑apoptotic effects of captopril on APE‑CA and the return of spontaneous circulation (ROSC). Pigs were randomly assigned into four groups: Control, APE‑CA, ROSC‑saline, and ROSC‑captopril...
January 12, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29328437/reduced-mitochondrial-response-sensitivity-is-involved-in-the-anti%C3%A2-apoptotic-effect-of-dexmedetomidine-pretreatment-in-cardiomyocytes
#20
Xiaojian Weng, Xiaodan Zhang, Xiaofei Lu, Jin Wu, Shitong Li
Dexmedetomidine is a commonly used α2-adreno-ceptor agonist, which affects various organs, including providing beneficial effects on the heart. However, the mechanism underlying the cardiac benefit remains to be fully elucidated. In the present study, it was demonstrated that dexmedetomidine pretreatment on primary cultured rat cardiomyocytes protected against reactive oxygen species (ROS)‑induced apoptosis. In terms of the potential mechanism, it was demonstrated that dexmedetomidine inhibited mitochondrial biogenesis and mitochondrial respiratory complexes, but with increased coupling efficiency...
January 12, 2018: International Journal of Molecular Medicine
keyword
keyword
118480
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"