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https://www.readbyqxmd.com/read/28098104/evaluation-of-arterial-stiffness-in-nondiabetic-chronic-kidney-disease-patients
#1
Bodanapu Mastanvalli, Kolla Praveen Kumar, Desai Madhav, P L Venkata Pakki Reddy, Shaik Mahaboob Vali
Chronic kidney disease (CKD) is a growing problem worldwide. Clinical and epidemiologic studies have shown that structural and functional changes that occur in major arteries are a major contributing factor to the high mortality in uremic patients. Recent studies have shown a stepwise increase of the carotid-femoral pulse wave velocity (cfPWV) from CKD Stage 1 to Stage 5. We evaluated the cfPWV and augmentation index (AIx), as indirect markers of arterial stiffness in patients with nondiabetic CKD and compared the values with normal population; we also evaluated the relationship between various stages of CKD and arterial stiffness markers...
January 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28097793/living-with-cardiac-resynchronization-therapy-challenges-for-people-with-heart-failure
#2
Shadi Dehghanzadeh, Nahid Dehghan Nayeri, Shokoh Varaei, Jalal Kheirkhah
The number of people with heart failure requiring implantation of a cardiac resynchronization device is increasing in Iran. Although this intervention is an effective life-saving treatment, several challenges are associated with patients' lifestyle after insertion. This study identified the challenges and coping mechanisms of Iranians with heart failure living with cardiac resynchronization therapy. A qualitative approach using conventional content analysis was adopted. Seventeen people with heart failure and three nurses were recruited between December 2014 and November 2015 from a teaching hospital and a private clinic in Rasht, Iran...
January 18, 2017: Nursing & Health Sciences
https://www.readbyqxmd.com/read/28097776/molecular-mechanisms-underlying-deoxy-adp-pi-activation-of-pre-powerstroke-myosin
#3
Sarah G Nowakowski, Michael Regnier, Valerie Daggett
Myosin activation is a viable approach to treat systolic heart failure. We previously demonstrated that striated muscle myosin is a promiscuous ATPase that can use most nucleoside triphosphates as energy substrates for contraction. When 2-deoxy ATP (dATP) is used, it acts as a myosin activator, enhancing cross-bridge binding and cycling. In vivo, we have demonstrated that elevated dATP levels increase basal cardiac function and rescues function of infarcted rodent and pig hearts. Here we investigate the molecular mechanism underlying this physiological effect...
January 18, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28097519/guidance-of-interventions-in-structural-heart-disease-three-dimensional-techniques-are-here-to-stay
#4
EDITORIAL
M Voskuil, H Sievert, F Arslan
No abstract text is available yet for this article.
January 17, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28097177/spirituality-a-panacea-for-patients-coping-with-heart-failure
#5
Parvin Mangolian Shahrbabaki, Esmat Nouhi, Majid Kazemi, Fazlollah Ahmadi
BACKGROUND: Many patients with heart failure grapple with related problems that threaten their feeling of well-being and quality of life. Patients look for ways to cope with the new situation. The present study aimed to explore religious coping from the perspective of patients with heart failure. METHODS: This qualitative study used the content analysis of the semi-structured interviews. The data were collected from 18 participants referring to training hospitals in Kerman University of Medical Sciences in southeastern Iran...
January 2017: International Journal of Community Based Nursing and Midwifery
https://www.readbyqxmd.com/read/28096461/differential-contribution-of-transmembrane-domains-iv-v-vi-and-vii-to-human-angiotensin-ii-type-1-receptor-homomer-formation
#6
Brent M Young, Elaine Nguyen, Matthew A J Chedrawe, Jan K Rainey, Denis J Dupré
G protein-coupled receptors (GPCRs) play an important role in drug therapy, and represent one of the largest families of drug targets. The angiotensin II type 1 receptor (AT1R) is notable as it has a central role in the treatment of cardiovascular disease. Blockade of AT1R signaling has been shown to alleviate hypertension and improve outcomes in patients with heart failure. Despite this, it has become apparent that our initial understanding of AT1R signaling is over-simplified. There is considerable evidence to suggest that AT1R signaling is highly modified in the presence of receptor-receptor interactions, but there is very little structural data available to explain this phenomenon even with the recent elucidation of the AT1R crystal structure...
January 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28095872/an-unusual-combined-thymic-carcinoma-composed-of-squamous-cell-carcinoma-and-type-ab-thymoma-a-rare-case-report
#7
Yufeng Jiang, Yang Liu, Xiuying Shi, Xiaoyun Mao, Yang Zhao, Chuifeng Fan
BACKGROUND: Combined thymic carcinoma is a malignant neoplasm of the thymus recently added to the 4th edition of the World Health Organization (WHO) classification of tumors of the lung, pleura, thymus and heart. It involves at least one type of thymic carcinoma and another thymic epithelial tumor. The previously used term "combined thymic epithelial tumor" has been abandoned. CASE PRESENTATION: Here, we present an unusual case of combined thymic carcinoma of the thymus in a 44-year-old male who had suffered from fever, chest pain, chest tightness and shortness of breath...
January 17, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28094777/high-resolution-structural-evidence-suggests-the-sarcoplasmic-reticulum-forms-microdomains-with-acidic-stores-lysosomes-in-the-heart
#8
Daniel Aston, Rebecca A Capel, Kerrie L Ford, Helen C Christian, Gary R Mirams, Eva A Rog-Zielinska, Peter Kohl, Antony Galione, Rebecca A B Burton, Derek A Terrar
Nicotinic Acid Adenine Dinucleotide Phosphate (NAADP) stimulates calcium release from acidic stores such as lysosomes and is a highly potent calcium-mobilising second messenger. NAADP plays an important role in calcium signalling in the heart under basal conditions and following β-adrenergic stress. Nevertheless, the spatial interaction of acidic stores with other parts of the calcium signalling apparatus in cardiac myocytes is unknown. We present evidence that lysosomes are intimately associated with the sarcoplasmic reticulum (SR) in ventricular myocytes; a median separation of 20 nm in 2D electron microscopy and 3...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28094152/use-of-3d-printer-technology-to-facilitate-surgical-correction-of-a-complex-vascular-anomaly-with-esophageal-entrapment-in-a-dog
#9
A Dundie, G Hayes, P Scrivani, L Campoy, D Fletcher, K Ash, E Oxford, N S Moïse
A 10 week old female intact Staffordshire terrier was presented with a total of five congenital cardio-thoracic vascular anomalies consisting of a patent ductus arteriosus (PDA) with an aneurysmic dilation, pulmonic stenosis, persistent right aortic arch, aberrant left subclavian artery and persistent left cranial vena cava. These abnormalities were identified with a combination of echocardiogram and computed tomography angiography (CTA). The abnormalities were associated with esophageal entrapment, regurgitation, and volume overload of the left heart with left atrial and ventricular enlargement...
January 13, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28093502/heat-strain-volume-depletion-and-kidney-function-in-california-agricultural-workers
#10
Sally Moyce, Diane Mitchell, Tracey Armitage, Daniel Tancredi, Jill Joseph, Marc Schenker
BACKGROUND: Agricultural work can expose workers to increased risk of heat strain and volume depletion due to repeated exposures to high ambient temperatures, arduous physical exertion and limited rehydration. These risk factors may result in acute kidney injury (AKI). METHODS: We estimated AKI cumulative incidence in a convenience sample of 283 agricultural workers based on elevations of serum creatinine between preshift and postshift blood samples. Heat strain was assessed based on changes in core body temperature and heart rate...
January 16, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28093417/cardiovascular-risk-of-patients-with-gout-seen-at-rheumatology-clinics-following-a-structured-assessment
#11
Mariano Andrés, José Antonio Bernal, Francisca Sivera, Neus Quilis, Loreto Carmona, Paloma Vela, Eliseo Pascual
OBJECTIVES: Gout-associated cardiovascular (CV) risk relates to comorbidities and crystal-led inflammation. The aim was to estimate the CV risk by prediction tools in new patients with gout and to assess whether ultrasonographic carotid changes are present in patients without high CV risk. METHODS: Cross-sectional study. Consecutive new patients with crystal-proven gout underwent a structured CV consultation, including CV events, risk factors and two risk prediction tools-the Systematic COronary Evaluation (SCORE) and the Framingham Heart Study (FHS)...
January 16, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28092839/effect-and-mechanism-of-sorbus-pohuashanensis-hante-hedl-flavonoids-protect-against-arsenic-trioxide-induced-cardiotoxicity
#12
Xiaojin Yu, Zhenyu Wang, Zunpeng Shu, Zhengqing Li, Yuan Ning, Keli Yun, Haina Bai, Ruihai Liu, Wenli Liu
The cardiotoxicity of arsenic trioxide (ATO) limits its clinical application in cancer treatment. Evidences suggest that sorbus has antioxidant activity and its consumption has been linked with improved cardioprotection. In this study, we investigated the cardio-protective effect and mechanisms of Sorbus pohuashanensis (Hante) Hedl. flavonoids (SPF) against ATO in BALB/c mice and H9c2 cells. Eleven major flavonoids were confirmed by ultra-performance liquid chromatography electrospray ionization quadrupole time of flight mass spectrometry (UPLC-ESI-Q-TOF-MS)...
January 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28092289/the-impact-of-obesity-on-heart-failure
#13
Alexander B Zhai, Haissam Haddad
PURPOSE OF REVIEW: Obesity, a growing global health problem, contributes to the development of heart failure. However, increased BMI seems protective for those with established disease, a phenomenon known as the 'obesity paradox'. In this review, we outline the mechanism through which obesity can contribute to the development of heart failure, explore the concept of obesity paradox, and highlight the challenges that obesity presents for advanced heart failure therapy. RECENT FINDINGS: Although the mechanism underlying the obesity paradox is complex, meta-analysis shows that intentional weight loss through bariatric surgery can indeed improve cardiac structure and function...
January 13, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28092024/introduction-history-of-sh2-domains-and-their-applications
#14
Bernard A Liu, Kazuya Machida
The Src Homology 2 (SH2) domain is the prototypical protein interaction module that lies at the heart of phosphotyrosine signaling. Since its serendipitous discovery, there has been a tremendous advancement in technologies and an array of techniques available for studying SH2 domains and phosphotyrosine signaling. In this chapter, we provide a glimpse of the history of SH2 domains and describe many of the tools and techniques that have been developed along the way and discuss future directions for SH2 domain studies...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28091966/aortic-regurgitation-generates-a-kinematic-obstruction-which-hinders-left-ventricular-filling
#15
Ikechukwu Okafor, Vrishank Raghav, Jose F Condado, Prem A Midha, Gautam Kumar, Ajit P Yoganathan
An incompetent aortic valve (AV) results in aortic regurgitation (AR), where retrograde flow of blood into the left ventricle (LV) is observed. In this work, we parametrically characterized the detailed changes in intra-ventricular flow during diastole as a result of AR in a physiological in vitro left-heart simulator (LHS). The loss of energy within the LV as the level of AR increased was also assessed. The validated LHS consisted of an optically-clear, flexible wall LV and a modular AV holder. Two-component, planar, digital particle image velocimetry was used to visualize and quantify intra-ventricular flow...
January 13, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28091942/all-trans-retinoic-acid-supplementation-prevents-cardiac-fibrosis-and-cytokines-induced-by-methylglyoxal
#16
Umadevi Subramanian, Devipriya Nagarajan
Methylglyoxal (MG), a metabolic intermediate of glycolysis is a precursor for endogeneous production of advanced glycation end-products. The increased production of MG have negative influence over the structure and function of different biomolecules and thus plays an important role in the pathogenesis of diabetic cardiac complications. Retinoic acid (RA), an active metabolite of vitamin A, has a major role in preventing cardiac remodeling and ventricular fibrosis. Hence, the objective of the present study was to determine whether rats administered with all-trans retinoic acid (RA) could attenuate MG induced pathological effects...
January 14, 2017: Glycoconjugate Journal
https://www.readbyqxmd.com/read/28091823/skeletal-muscle-inflammation-and-atrophy-in-heart-failure
#17
Kory J Lavine, Oscar L Sierra
Heart failure represents a systemic disease with profound effects on multiple peripheral tissues including skeletal muscle. Within the context of heart failure, perturbations in skeletal muscle physiology, structure, and function strongly contribute to exercise intolerance and the morbidity of this devastating disease. There is growing evidence that chronic heart failure imparts specific pathological changes within skeletal muscle beds resulting in muscle dysfunction and tissue atrophy. Mechanistically, systemic and local inflammatory responses drive critical aspects of this pathology...
January 14, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28090760/expression-patterns-of-cardiac-aging-in-drosophila
#18
Leah Cannon, Alexander C Zambon, Anthony Cammarato, Zhi Zhang, Georg Vogler, Matthew Munoz, Erika Taylor, Jérôme Cartry, Sanford I Bernstein, Simon Melov, Rolf Bodmer
Aging causes cardiac dysfunction, often leading to heart failure and death. The molecular basis of age-associated changes in cardiac structure and function is largely unknown. The fruit fly, Drosophila melanogaster, is well-suited to investigate the genetics of cardiac aging. Flies age rapidly over the course of weeks, benefit from many tools to easily manipulate their genome, and their heart has significant genetic and phenotypic similarities to the human heart. Here, we performed a cardiac-specific gene expression study on aging Drosophila and carried out a comparative meta-analysis with published rodent data...
February 2017: Aging Cell
https://www.readbyqxmd.com/read/28087602/novel-application-of-3d-contrast-enhanced-cmr-to-define-fibrotic-structure-of-the-human-sinoatrial-node-in-vivo
#19
Thomas A Csepe, Jichao Zhao, Lidiya V Sul, Yufeng Wang, Brian J Hansen, Ning Li, Anthony J Ignozzi, Anna Bratasz, Kimerly A Powell, Ahmet Kilic, Peter J Mohler, Paul M L Janssen, John D Hummel, Orlando P Simonetti, Vadim V Fedorov
AIMS: The adult human sinoatrial node (SAN) has a specialized fibrotic intramural structure (35-55% fibrotic tissue) that provides mechanical and electrical protection from the surrounding atria. We hypothesize that late gadolinium-enhanced cardiovascular magnetic resonance (LGE-CMR) can be applied to define the fibrotic human SAN structure in vivo. METHODS AND RESULTS: LGE-CMR atrial scans of healthy volunteers (n olu, 23-52 y.o.) using a 3 Tesla magnetic resonance imaging system with a spatial resolution of 1...
January 13, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28087180/a-comparison-of-hfref-vs-hfpef-s-clinical-workload-and-cost-in-the-first-year-following-hospitalization-and-enrollment-in-a-disease-management-program
#20
T M Murphy, D F Waterhouse, S James, C Casey, E Fitzgerald, E O'Connell, C Watson, J Gallagher, M Ledwidge, K McDonald
BACKGROUND: Admission with heart failure (HF) is a milestone in the progression of the disease, often resulting in higher intensity medical care and ensuing readmissions. Whilst there is evidence supporting enrolling patients in a heart failure disease management program (HF-DMP), not all reported HF-DMPs have systematically enrolled patients with HF with preserved ejection fraction (HFpEF) and there is a scarcity of literature differentiating costs based on HF-phenotype. METHODS: 1292 consenting, consecutive patients admitted with a primary diagnosis of HF were enrolled in a hospital based HF-DMP and categorized as HFpEF (EF≥45%) or HFrEF (EF<45%)...
December 23, 2016: International Journal of Cardiology
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