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https://www.readbyqxmd.com/read/28538762/papillary-muscle-free-strain-in-patients-with-severe-degenerative-and-functional-mitral-regurgitation
#1
Alev Kılıcgedik, Gokhan Kahveci, Ahmet Seyfeddin Gurbuz, Can Yucel Karabay, Ahmet Guler, Suleyman Cagan Efe, Soe Moe Aung, Ugur Arslantas, Serdar Demir, Ibrahim Akin Izgi, Cevat Kirma
Fundamento: The role of papillary muscle function in severe mitral regurgitation with preserved and reduced left ventricular ejection fraction and the method of choice to evaluate PM have still been the subjects of controversy. Objectives: To evaluate and compare papillary muscle function in and between patients with severe degenerative and functional mitral regurgitation by using the free strain method. Methods: 64 patients with severe mitral regurgitation - 39 patients with degenerative mitral regurgitation (DMR group) and 25 patients with severe functional mitral regurgitation (FMR group) - and 30 control subjects (control group) were included in the study...
April 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28538706/the-importance-of-pericytes-in-healing-wounds-and-other-pathologies
#2
REVIEW
Hannah Thomas, Allison J Cowin, Stuart J Mills
Much of current research investigates the beneficial properties of mesenchymal stem cells (MSCs) as a treatment for wounds and other forms of injury. In this review, we bring attention to and discuss the role of the pericyte, a cell type which shares much of the differentiation potential and regenerative properties of the MSC as well as specific roles in the regulation of angiogenesis, inflammation and fibrosis. Pericytes have been identified as dysfunctional or depleted in many disease states, and observing the outcomes of pericyte perturbation in models of disease and wound healing informs our understanding of overall pericyte function and identifies these cells as an important target in the development of therapies to encourage healing...
May 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28538669/the-peroxisome-mitochondria-connection-how-and-why
#3
REVIEW
Marc Fransen, Celien Lismont, Paul Walton
Over the past decades, peroxisomes have emerged as key regulators in overall cellular lipid and reactive oxygen species metabolism. In mammals, these organelles have also been recognized as important hubs in redox-, lipid-, inflammatory-, and innate immune-signaling networks. To exert these activities, peroxisomes must interact both functionally and physically with other cell organelles. This review provides a comprehensive look of what is currently known about the interconnectivity between peroxisomes and mitochondria within mammalian cells...
May 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28538644/validation-of-a-clinical-trial-composite-endpoint-for-patients-with-necrotizing-soft-tissue-infections
#4
Eileen M Bulger, Addison May, Wayne Dankner, Greg Maislin, Bryce Robinson, Anat Shirvan
OBJECTIVE: Our objective was to develop and validate a composite endpoint for patients with necrotizing soft tissue infections (NSTI) that incorporates: local tissue injury, systemic organ dysfunction, and mortality. METHODS: The Necrotizing Infection Clinical Composite Endpoint (NICCE) was defined as follows:(i) Alive at day 28 (ii) ≤3 debridements prior to day 14 (iii) No amputation beyond first debridement (iv) Modified SOFA score (mSOFA) at day 14 ≤1. To be considered a success, all individual criteria must be met...
May 22, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28538623/impact-of-a-novel-pi3-kinase-inhibitor-in-preventing-mitochondrial-dna-damage-and-damage-associated-molecular-pattern-accumulation-results-from-the-biochronicity-project
#5
George E Black, Kyle K Sokol, Donald M Moe, Jon Simmons, David Muscat, Victor Pastukh, Gina Capley, Olena Gorodnya, Mykhalo Ruchko, Mark B Roth, Mark Gillespie, Matthew J Martin
BACKGROUND: Despite improvements in the management of severely injured patients, development of multiple organ dysfunction syndrome (MODS) remains a morbid complication of traumatic shock. One of the key attributes of MODS is a profound bioenergetics crisis, for which the mediators and mechanisms are poorly understood. We hypothesized that metabolic uncoupling using an experimental PI3-kinase inhibitor, LY294002 (LY), may prevent mitochondrial abnormalities that lead to the generation of mitochondrial DNA (mtDNA) damage and the release of mtDNA damage associated molecular patterns (DAMPs) METHODS: 16 swine were studied using LY294002 (LY), a non-selective PI3-KI: Animals were assigned to Trauma only (TO, N=3); LY drug only (LYO, N=3); and Experimental (N=10), trauma + drug (LY+T) groups...
May 22, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28538602/pelvic-organ-prolapse-does-hormone-therapy-use-matter
#6
Erika J Wasenda, Ixora Kamisan Atan, Nishamini Subramaniam, Hans Peter Dietz
OBJECTIVE: To determine the effect of hormone therapy (HT) use on pelvic organ support. METHODS: A retrospective observational study involving postmenopausal women with pelvic floor dysfunction attending a tertiary urogynecology center between January 2012 and March 2015. All underwent a clinical examination including International Continence Society Pelvic Organ Prolapse Quantification and 4D translabial ultrasound imaging. Information on current or former use of systemic HT and current local estrogen use was collected...
May 22, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28538580/what-s-new-in-cleft-palate-and-velopharyngeal-dysfunction-management
#7
Sanjay Naran, Matthew Ford, Joseph E Losee
LEARNING OBJECTIVES: After studying this article, the participant should be able to: 1. Have a clear understanding of the evolution of concepts of velopharyngeal dysfunction, especially as it relates to patients with a cleft palate. 2. Explain the subjective and objective evaluation of speech in children with velopharyngeal dysfunction. 3. On the basis of these diagnostic findings, be able to classify types of velopharyngeal dysfunction. 4. Develop a safe, evidence-based, patient-customized treatment plan for velopharyngeal dysfunction founded on objective considerations...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28538514/long-term-outcome-of-4-patients-with-transcobalamin-deficiency-caused-by-2-novel-tcn2-mutations
#8
Marwan Nashabat, Gustavo Maegawa, Peter H Nissen, Ebba Nexo, Hussain Al-Shamrani, Mohammed Al-Owain, Majid Alfadhel
Cobalamin (vitamin B12 [Cbl]) is an essential cofactor for many biochemical pathways. Transcobalamin (TC) is required to internalize Cbl into the cells through membrane receptor-mediated endocytosis. Cbl is then processed in the cytoplasm and mitochondria by complementation factors leading to its active metabolites; methylcobalamin and 5-deoxyadenosyl-cobalamin. Deficiency of TC results in an elevation in methylmalonic acid and homocysteine. Patients usually present with macrocytic anemia, pancytopenia, failure to thrive, gastrointestinal symptoms, and neurological dysfunction...
May 22, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28538496/committee-opinion-no-702-female-athlete-triad
#9
(no author information available yet)
The female athlete triad is a medical condition observed in physically active females involving three components: 1) low energy availability with or without disordered eating, 2) menstrual dysfunction, and 3) low bone density. An individual does not need to show clinical manifestations of all three components of the female athlete triad simultaneously to be affected by the condition. Consequences of these clinical conditions may not be completely reversible, so prevention, early diagnosis, and intervention are critical...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28538492/committee-opinion-no-702-summary-female-athlete-triad
#10
(no author information available yet)
The female athlete triad is a medical condition observed in physically active females involving three components: 1) low energy availability with or without disordered eating, 2) menstrual dysfunction, and 3) low bone density. An individual does not need to show clinical manifestations of all three components of the female athlete triad simultaneously to be affected by the condition. Consequences of these clinical conditions may not be completely reversible, so prevention, early diagnosis, and intervention are critical...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28538467/dichotic-listening-deficit-associated-with-solvent-exposure
#11
Simon P Landry, Adrian Fuente
HYPOTHESIS: A significant left ear deficit can be observed in solvent-exposed individuals using the dichotic digit test. BACKGROUND: Solvents are ubiquitous in global industrial processes. Due to their lipophilic nature, solvents can adversely affect large white matter tracks such as the corpus callosum. Previous investigations reveal that long-term workplace exposure to solvents is also deleterious to various auditory processes. Investigations in exposed populations suggest a decreased performance for dichotic listening...
May 22, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28538420/prediction-of-the-outcome-of-bladder-dysfunction-based-on-electrically-induced-reflex-findings-in-patients-with-cauda-equina-syndrome-a-retrospective-study
#12
Dong Gyu Lee, Sang Gyu Kwak, Min Cheol Chang
The evaluation of the electrically induced bulbocavernosus reflex (BCR) using electromyography (EMG) is a useful tool for evaluating the integrity of sacral spinal segments 2 to 4, and that of their afferent and efferent connections in the urogenital region. In the current retrospective study, the value of this technique in predicting the outcome of bladder dysfunction was investigated in patients with cauda equina syndrome (CES). Electrically induced BCR (E-BCR) was evaluated in 40 patients with bladder dysfunction due to CES at the subacute stage (7-90 days)...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28538380/acute-effects-of-cinacalcet-on-arterial-stiffness-and-ventricular-function-in-hemodialysis-patients-a-randomized-double-blinded-crossover-study
#13
Aurélie Poulin, Pierre-Luc Bellemare, Catherine Fortier, Fabrice Mac-Way, Simon Desmeules, Karine Marquis, Valérie Gaudreault, Marcel Lebel, Mohsen Agharazii
BACKGROUND: Serum calcium concentration (Ca) plays an essential role in a vascular muscle tone and myocardial contractility. Previously, we showed that acutely lowering Ca by hemodialysis reduced arterial stiffness. Cinacalcet is a calcimimetic that lowers Ca and parathyroid hormone (PTH). The aim of the present study was to examine whether acute lowering of Ca by cinacalcet improves vascular stiffness and myocardial diastolic dysfunction. METHOD: This is a double-blinded randomized placebo-controlled crossover study that included 21 adult patients with end-stage kidney disease undergoing chronic hemodialysis...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28538261/physical-activity-and-sleep-quality-in-breast-cancer-survivors-a-randomized-trial
#14
Laura Q Rogers, Kerry S Courneya, Robert A Oster, Philip M Anton, Randall S Robbs, Andres Forero, Edward McAuley
PURPOSE: Data from large randomized controlled trials confirming sleep quality improvements with aerobic physical activity have heretofore been lacking for post-primary treatment breast cancer survivors. Our primary purpose for this report was to determine the effects of a physical activity behavior change intervention, previously reported to significantly increase physical activity behavior, on sleep quality in post-primary treatment breast cancer survivors. METHODS: Post-primary treatment breast cancer survivors (n=222) were randomized to a 3-month physical activity behavior change intervention (BEAT Cancer) or usual care...
May 20, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28538252/concurrent-paraspinous-myopathy-and-myasthenia-gravis
#15
Alissa E Romano, Zaid Al-Qudah, Henry J Kaminski, Bashar Katirji, Karim Salame
Paraspinous myopathy is a rare neuromuscular disorder characterized by selective involvement of the cervical, thoracic, or lumbar muscles. Leading clinical features include a bent spine or dropped head (antecollis). In myasthenia gravis (MG), patients may have camptocormia secondary to neuromuscular junction dysfunction of the paraspinal muscles, and this condition usually responds to acetylcholinesterase inhibitors or immunosuppressive treatments. However, concomitant MG and paraspinous myopathy with histologic and electrophysiologic evidence of myopathic changes of the paraspinal muscles has only been reported twice in the literature...
June 2017: Journal of Clinical Neuromuscular Disease
https://www.readbyqxmd.com/read/28538243/bk-virus-as-a-mediator-of-graft-dysfunction-following-kidney-transplantation
#16
Stephanie G Yi, Richard J Knight, Keri E Lunsford
PURPOSE OF REVIEW: BK virus is a significant risk factor for kidney allograft dysfunction and loss among renal transplant recipients. Currently, there is no proven effective treatment except for the reduction of immunosuppression. In this review, we discuss diagnostic challenges and current treatment options for BK in kidney transplant recipients. RECENT FINDINGS: Antiviral and antibiotic therapies have been employed for BK viraemia with variable efficacy. In addition, novel therapeutic regimens such as adoptive transfer of targeted T cells have been described as possible treatment options for recipients with BK nephropathy...
May 22, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28538226/exploring-neural-efficiency-in-multiple-sclerosis-patients-during-the-symbol-digit-modalities-test-a-functional-magnetic-resonance-imaging-study
#17
María Sol Fittipaldi-Márquez, Álvaro Javier Cruz-Gómez, Carla Sanchis-Segura, Antonio Belenguer, César Ávila, Cristina Forn
BACKGROUND: Reduced information-processing speed (IPS) is a primary cognitive deficit of multiple sclerosis (MS) patients. The neural efficiency hypothesis describes an inverse relationship between cognitive performance in a task and the amount of cognitive resources devoted to it. Previous studies have shown that the neural efficiency hypothesis provides an appropriate framework to explore cognitive dysfunction in neurological patients. OBJECTIVE: The aim of this study was to explore the neural efficiency hypothesis regarding IPS capabilities in cognitively preserved MS patients...
May 25, 2017: Neuro-degenerative Diseases
https://www.readbyqxmd.com/read/28538172/using-hescs-to-probe-the-interaction-of-the-diabetes-associated-genes-cdkal1-and-mt1e
#18
Min Guo, Tuo Zhang, Xue Dong, Jenny Zhaoying Xiang, Minxiang Lei, Todd Evans, Johannes Graumann, Shuibing Chen
Genome-wide association studies (GWASs) have identified many disease-associated variant alleles, but understanding whether and how different genes/loci interact requires a platform for probing how the variant alleles act mechanistically. Isogenic mutant human embryonic stem cells (hESCs) provide an unlimited resource to derive and study human disease-relevant cells. Here, we focused on CDKAL1, linked by GWASs to diabetes. Through transcript profiling, we find that expression of the metallothionein (MT) gene family, also linked by GWASs to diabetes, is significantly downregulated in CDKAL1(-/-) cells that have been differentiated to insulin-expressing pancreatic beta-like cells...
May 23, 2017: Cell Reports
https://www.readbyqxmd.com/read/28538106/intramuscular-triglyceride-content-precedes-impaired-glucose-metabolism-without-evidence-for-mitochondrial-dysfunction-during-early-development-of-a-diabetic-phenotype
#19
Zachary J Callahan, Michael James Oxendine, Paul J Schaeffer
The incidence of type 2 diabetes is highly correlated with obesity; however, there is a lack of research elucidating the temporal progression. Transgenic FVB/N UCP-dta mice, which develop a diabetic phenotype, and their non-transgenic littermates were fed either a high-fat or normal-chow diet and were studied at 6, 9, 12, 15, 18, 21, and 24 weeks of age in order to test the hypothesis that increased lipid accumulation in skeletal muscle causes mitochondrial dysfunction, leading to the development of insulin resistance...
May 24, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28538086/sphingosine-1-phosphate-receptor-1-agonist-sew2871-causes-severe-cardiac-side-effects-and-does-not-improve-microvascular-barrier-breakdown-in-sepsis
#20
Sven Flemming, Natalie Burkard, Michael Meir, Martin Alexander Schick, Christoph-Thomas Germer, Nicolas Schlegel
BACKGROUND: Endothelial barrier dysfunction is a hallmark in the pathogenesis of sepsis. Sphingosine-1-phosphate (S1P) has been proposed to be critically involved in the maintenance of endothelial barrier function predominately by activating S1P receptor-1 (S1P1). Previous studies have shown that the specific S1P1 agonist SEW2871 improves endothelial barrier function under inflammatory conditions. However, the effectiveness of SEW2871 and potential side effects remained largely unexplored in a clinically relevant model of sepsis...
May 23, 2017: Shock
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