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https://www.readbyqxmd.com/read/28343311/mechanistic-insight-of-platelet-apoptosis-leading-to-non-surgical-bleeding-among-heart-failure-patients-supported-by-continuous-flow-left-ventricular-assist-devices
#1
Nandan K Mondal, Tielou Li, Zengsheng Chen, Hegang H Chen, Erik N Sorensen, Si M Pham, Michael A Sobieski, Steven C Koenig, Mark S Slaughter, Bartley P Griffith, Zhongjun J Wu
Non-surgical bleeding (NSB) is the most common clinical complication in heart failure (HF) patients supported by continuous-flow left ventricular assist devices (CF-LVADs). In this study, oxidative stress and alteration of signal pathways leading to platelet apoptosis were investigated. Thirty-one HF patients supported by CF-LVADs were divided into bleeder (n = 12) and non-bleeder (n = 19) groups. Multiple blood samples were collected at pre-implant (baseline) and weekly up to 1-month post-implant. A single blood sample was collected from healthy subjects (reference)...
March 25, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28343197/-skin-cancers-in-kidney-transplant-recipients
#2
Anna Bieryło, Szymon Brzósko, Elżbieta Laudańska, Beata Naumnik
Kidney transplantation is the best treatment for end-stage renal failure. It prolongs the patient's life, improves quality of life and reduces costs associated with renal replacement therapy. Increasingly, newer immunosuppressive regimens allow for the proper functioning of the transplanted organ for many years. The progress in transplantation, qualification patients in older age for the procedure and longer survival of kidney graft lead to an increase in the number of patients receiving immunosuppressive drugs...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28342966/time-courses-of-post-injury-mitochondrial-oxidative-damage-and-respiratory-dysfunction-and-neuronal-cytoskeletal-degradation-in-a-rat-model-of-focal-traumatic-brain-injury
#3
Rachel L Hill, Indrapal N Singh, Juan A Wang, Edward D Hall
Traumatic brain injury (TBI) results in rapid reactive oxygen species (ROS) production and oxidative damage to essential brain cellular components leading to neuronal dysfunction and cell death. It is increasingly appreciated that a major player in TBI-induced oxidative damage is the reactive nitrogen species (RNS) peroxynitrite (PN) which is produced in large part in injured brain mitochondria. Once formed, PN decomposes into highly reactive free radicals that trigger membrane lipid peroxidation (LP) of polyunsaturated fatty acids (e...
March 23, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28342855/regulation-of-reproduction-via-tight-control-of-gonadotropin-hormone-levels
#4
Djurdjica Coss
Mammalian reproduction is controlled by the hypothalamic-pituitary-gonadal axis. GnRH from the hypothalamus regulates synthesis and secretion of gonadotropins, LH and FSH, which then control steroidogenesis and gametogenesis. In females, serum LH and FSH levels exhibit rhythmic changes throughout the menstrual or estrous cycle that are correlated with pulse frequency of GnRH. Lack of gonadotropins leads to infertility or amenorrhea. Dysfunctions in the tightly controlled ratio due to levels slightly outside the normal range occur in a larger number of women and are correlated with polycystic ovaries and premature ovarian failure...
March 22, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28342806/molecular-regulation-of-mitochondrial-dynamics-in-cardiac-disease
#5
REVIEW
Jinliang Nan, Wei Zhu, M S Rahman, Mingfei Liu, Dan Li, Shengan Su, Na Zhang, Xinyang Hu, Hong Yu, Mahesh P Gupta, Jian''an Wang
Mitochondrial homeostasis is critical for keeping functional heart in response to metabolic or environmental stresses. Mitochondrial fission and fusion (mitochondrial dynamics) play essential roles in maintaining mitochondrial homeostasis, defects in mitochondrial dynamics lead to cardiac diseases such as ischemia-reperfusion injury (IRI), heart failure and diabetic cardiomyopathy. Mitochondrial dynamics is determined by mitochondrial fission and fusion proteins, including OPA1, mitofusins and Drp1. These proteins are tightly regulated by a series of signaling pathways through different aspects such as transcription, post translation modifications (PTMs) and proteasome-dependent protein degradation...
March 22, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28342760/correction-of-hirschsprung-associated-mutations-in-human-induced-pluripotent-stem-cells-via-crispr-cas9-restores-neural-crest-cell-function
#6
Frank Pui-Ling Lai, Sin-Ting Lau, John Kwong-Leong Wong, Hongsheng Gui, Reeson Xu Wang, Tingwen Zhou, Wing Hon Lai, Hung-Fat Tse, Paul Kwong-Hang Tam, Maria-Mercedes Garcia-Barcelo, Elly Sau-Wai Ngan
BACKGROUND & AIM: Hirschsprung disease is caused by failure of enteric neural crest cells (ENCCs) to fully colonize the bowel, leading to bowel obstruction and megacolon. Heterozygous mutations in the coding region of the RET gene cause a severe form of Hirschsprung disease (total colonic aganglionosis). However, 80% of HSCR patients have short-segment Hirschsprung disease (S-HSCR), which has not been associated with genetic factors. We sought to identify mutations associated S-HSCR, and used the CRISPR/Cas9 gene editing system to determine how mutations affect ENCC function...
March 22, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28342624/the-level-of-anxiety-depression-and-quality-of-life-among-patients-with-heart-failure-in-greece
#7
Zoi Aggelopoulou, Nikolaos V Fotos, Anastasia A Chatziefstratiou, Konstantinos Giakoumidakis, Ioannis Elefsiniotis, Hero Brokalaki
PURPOSE: The assessment of the level of anxiety, depression and quality of life among patients with heart failure. METHODS: It was an observational study. The populations were 231 patients with heart failure who were hospitalized in cardiology departments of 2 general hospitals in Athens, from September 1, 2010 through January 31, 2012. We used the "Minnesota Living with Heart Failure Questionnaire - MLHFQ" to evaluate patients' quality of life and the " State-Trait Anxiety Inventory - STAI" and the "Maastricht Questionnaire - MQ" to evaluate the level of stress and depression, respectively...
April 2017: Applied Nursing Research: ANR
https://www.readbyqxmd.com/read/28342521/endovascular-management-of-chronic-symptomatic-aortic-dissection-with-the-streamliner-multilayer-flow-modulator-twelve-month-outcomes-from-the-global-registry
#8
Sherif Sultan, Edel P Kavanagh, Florian Stefanov, Mohamed Sultan, Ala Elhelali, Victor Costache, Edward Diethrich, Niamh Hynes
OBJECTIVE: Reported are initial 12-month outcomes of patients with chronic symptomatic aortic dissection managed by the Streamliner Multilayer Flow Modulator (SMFM; Cardiatis, Isnes, Belgium). Primary end points were freedom from rupture- and aortic-related death, and reduction in false lumen index. Secondary end points were patency of great vessels and visceral branches, and freedom of stroke, paraplegia, and renal failure. METHODS: Out of 876 SMFM implanted globally, we have knowledge of 542...
April 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28340182/novel-targets-and-future-strategies-for-acute-cardioprotection-position-paper-of-the-european-society-of-cardiology-working-group-on-cellular-biology-of-the-heart
#9
Derek J Hausenloy, David Garcia-Dorado, Hans Erik Bøtker, Sean M Davidson, James Downey, Felix B Engel, Robert Jennings, Sandrine Lecour, Jonathan Leor, Rosalinda Madonna, Michel Ovize, Cinzia Perrino, Fabrice Prunier, Rainer Schulz, Joost P G Sluijter, Linda W Van Laake, Jakob Vinten-Johansen, Derek M Yellon, Kirsti Ytrehus, Gerd Heusch, Péter Ferdinandy
Ischaemic heart disease and the heart failure that often results, remain the leading causes of death and disability in Europe and worldwide. As such, in order to prevent heart failure and improve clinical outcomes in patients presenting with an acute ST-segment elevation myocardial infarction and patients undergoing coronary artery bypass graft surgery, novel therapies are required to protect the heart against the detrimental effects of acute ischaemia/reperfusion injury. During the last three decades, a wide variety of ischaemic conditioning strategies and pharmacological treatments have been tested in the clinic - however, their translation from experimental to clinical studies for improving patient outcomes has been both challenging and disappointing...
March 17, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28340026/high-rate-of-subcutaneous-implantable-cardioverter-defibrillator-sensing-screening-failure-in-patients-with-brugada-syndrome-a-comparison-with-other-inherited-primary-arrhythmia-syndromes
#10
Giulio Conte, Mihoko Kawabata, Carlo de Asmundis, Erika Taravelli, Francesco Petracca, Diego Ruggiero, Maria Luce Caputo, François Regoli, Gian-Battista Chierchia, Alessandra Chiodini, Alessandro Del Bufalo, Tiziano Moccetti, Masahiko Goya, Kenzo Hirao, Alessandro Vicentini, Gaetano M De Ferrari, Pedro Brugada, Angelo Auricchio
Aims: Subcutaneous implantable cardioverter-defibrillator (S-ICD) can avoid important complications associated with transvenous leads in patients with inherited primary arrhythmia syndromes, who do not need pacing therapy. Few data are available on the percentage of patients with inherited arrhythmia syndromes eligible for S-ICD implantation. Aim of this study was to analyse the eligibility for S-ICD in a series of patients with Brugada syndrome (BrS), and to compare it with patients with other channelopathies...
March 7, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28340014/association-between-right-ventricular-lead-position-and-clinical-outcomes-in-patients-with-cardiac-resynchronization-therapy
#11
Mads Brix Kronborg, Jens Brock Johansen, Sam Riahi, Helen Hoegh Petersen, Jens Haarbo, Ole Dan Jørgensen, Jens Cosedis Nielsen
Aims: To evaluate the association between an apical vs. non-apical right ventricular lead position (RV-LP) and clinical outcome in a large nationwide cohort of patients treated with cardiac resynchronization therapy (CRT). Methods and results: We included consecutive Danish patients receiving a CRT device from 2008 to 2012, identified from the Danish Pacemaker and ICD Register. Endpoints were mortality, mortality or hospitalization for heart failure (HF), and clinical response (improvement ≥1 New York Heart Association class at follow-up)...
March 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28340010/non-proteinuric-rather-than-proteinuric-renal-diseases-are-the-leading-cause-of-end-stage-kidney-disease
#12
Davide Bolignano, Carmine Zoccali
Proteinuria is a distinguishing feature in primary and secondary forms of chronic glomerulonephritis, which contribute to no more than the 20% of the end-stage kidney disease (ESKD) population. The contribution of non-proteinuric nephropathies to the global ESKD burden is still poorly focused and scarce research efforts are dedicated to the elucidation of risk factors and mechanistic pathways triggering ESKD in these diseases. We abstracted information on proteinuria in the main renal diseases other than glomerulonephritides that may evolve into ESKD...
March 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28339585/success-and-complication-rates-of-lead-extraction-with-the-first-vs-the-second-generation-evolution-mechanical-sheath
#13
Olivier A Witte, Ahmet Adiyaman, Jaap Jan J Smit, Anand R Ramdat Misier, Arif Elvan, Abdul Ghani, Peter Paul H M Delnoy
Aims: The Evolution sheath (Cook Medical, USA) is a power sheath frequently used for chronic lead extraction. In 2013, a novel type (bidirectional) of Evolution sheath (the RL type) was introduced. We evaluated differences in success and complication rates of the two types. Methods and results: From 2009 to 2015, all lead extractions requiring the use of an Evolution sheath were prospectively examined. According to the current guidelines, complete procedural success was defined as the removal of all targeted lead materials...
October 6, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28339476/transgenic-mice-overexpressing-desmocollin-2-dsc2-develop-cardiomyopathy-associated-with-myocardial-inflammation-and-fibrotic-remodeling
#14
Andreas Brodehl, Darrell D Belke, Lauren Garnett, Kristina Martens, Nelly Abdelfatah, Marcela Rodriguez, Catherine Diao, Yong-Xiang Chen, Paul M K Gordon, Anders Nygren, Brenda Gerull
BACKGROUND: Arrhythmogenic cardiomyopathy is an inherited heart muscle disorder leading to ventricular arrhythmias and heart failure, mainly as a result of mutations in cardiac desmosomal genes. Desmosomes are cell-cell junctions mediating adhesion of cardiomyocytes; however, the molecular and cellular mechanisms underlying the disease remain widely unknown. Desmocollin-2 is a desmosomal cadherin serving as an anchor molecule required to reconstitute homeostatic intercellular adhesion with desmoglein-2...
2017: PloS One
https://www.readbyqxmd.com/read/28339316/practical-insight-to-monitor-home-niv-in-copd-patients
#15
Jean-Michel Arnal, Joëlle Texereau, Aude Garnero
Home noninvasive ventilation (NIV) is used in COPD patients with concomitant chronic hypercapnic respiratory failure in order to correct nocturnal hypoventilation and improve sleep quality, quality of life, and survival. Monitoring of home NIV is needed to assess the effectiveness of ventilation and adherence to therapy, resolve potential adverse effects, reinforce patient knowledge, provide maintenance of the equipment, and readjust the ventilator settings according to the changing condition of the patient...
March 24, 2017: COPD
https://www.readbyqxmd.com/read/28339049/kidney-and-heavy-metals-the-role-of-environmental-exposure-review
#16
Paolo Lentini, Luca Zanoli, Antonio Granata, Salvatore Santo Signorelli, Pietro Castellino, Roberto Dell'Aquila
Heavy metals are extensively used in agriculture and industrial applications such as production of pesticides, batteries, alloys, and textile dyes. Prolonged, intensive or excessive exposure can induce related systemic disorders. Kidney is a target organ in heavy metal toxicity for its capacity to filter, reabsorb and concentrate divalent ions. The extent and the expression of renal damage depends on the species of metals, the dose, and the time of exposure. Almost always acute kidney impairment differs from chronic renal failure in its mechanism and in the magnitude of the outcomes...
March 24, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28338847/paradigm-shift-from-diagnosing-patients-based-on-common-symptoms-to-categorizing-patients-into-subtypes-with-different-pathogenic-mechanisms-to-guide-treatment-for-alzheimer-s-disease
#17
Keiro Shirotani, Masashi Asai, Nobuhisa Iwata
Alzheimer's disease (AD) is a major cause of dementia in the elderly, and the number of AD patients is rapidly growing as life expectancy increases. However, disease-modifying drugs are not yet available. According to the amyloid hypothesis, disease onset is triggered by aggregation and accumulation of amyloid-β peptide, followed by formation of neurofibrillary tangles composed of hyperphosphorylated tau, and synaptic loss/neuronal cell death leading to dementia. Based on this hypothesis, various clinical trials for treatment of AD have been conducted, but most were discontinued due to failure to achieve cognitive improvement or appearance of adverse effects...
March 7, 2017: Journal of Biochemistry
https://www.readbyqxmd.com/read/28338553/consequences-of-hybrid-procedure-addition-to-robotic-assisted-direct-coronary-artery-bypass
#18
Feras Khaliel, Vincenzo Giambruno, Michael W A Chu, Kumar Sridhar, Patrick Teefy, Bob B Kiaii
OBJECTIVE: Patients postcoronary artery revascularization surgery often receives blood product transfusion, which could delay their intensive care unit and hospital discharge. We investigated our robotic-assisted direct coronary artery bypass (RADCAB) transfusion rate to determine whether performing the minimal invasive coronary surgery with percutaneous coronary intervention in one stage would increase the incidence of blood transfusion, morbidity, and length of stay. METHODS: Between November 2003 and November 2015, 483 consecutive patients underwent RADCAB surgery...
March 23, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28338524/chronic-boutonniere-deformities-supple-or-stiff-a-new-surgical-technique-with-early-mobilization-in-11-cases
#19
Elodie Dubois, Frederic Teboul, Thomas Bihel, Jean-N Goubier
Injuries to the central slip of the extensor mechanism can lead to a Boutonniere deformity with important functional consequences. We report a series of 11 patients treated by lengthening-dorsalizing the lateral bands and tightening the central slip with early mobilization. The average age of the patients was 42 years (14;52). The extension defect of the proximal interphalangeal (PIP) joint was 64 degrees (80;55) and the hyperextension of the distal interphalangeal joint was 10 degrees (15;5). The surgery was performed with peripheral nerve block (sensitive), allowing dynamic adjustment of the tendinous sutures...
March 23, 2017: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/28338509/patterns-timing-and-predictors-of-recurrence-following-pancreatectomy-for-pancreatic-ductal-adenocarcinoma
#20
Vincent P Groot, Neda Rezaee, Wenchuan Wu, John L Cameron, Elliot K Fishman, Ralph H Hruban, Matthew J Weiss, Lei Zheng, Christopher L Wolfgang, Jin He
OBJECTIVE: To describe accurately the pattern, timing, and predictors of disease recurrence after a potentially curative resection for pancreatic ductal adenocarcinoma (PDAC). SUMMARY BACKGROUND DATA: After surgery for PDAC, most patients will develop disease recurrence. Understanding the patterns and timing of disease failure can help guide improvements in therapy. METHODS: Patients who underwent pancreatectomy for PDAC at the Johns Hopkins Hospital between 2000 and 2010 were included...
March 23, 2017: Annals of Surgery
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