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https://www.readbyqxmd.com/read/29351705/percutaneous-endoscopic-rendezvous-procedure-for-the-management-of-bile-duct-injuries-after-cholecystectomy-short-and-long-term-outcomes
#1
Anne Marthe Schreuder, Klaske A C Booij, Philip R de Reuver, Otto M van Delden, Krijn P van Lienden, Marc G Besselink, Olivier R Busch, Dirk J Gouma, Erik A J Rauws, Thomas M van Gulik
BACKGROUND:  Bile duct injury (BDI) remains a daunting complication of laparoscopic cholecystectomy. In patients with complex BDI, a percutaneous-endoscopic rendezvous procedure may be required to establish bile duct continuity. The aim of this study was to assess short- and long-term outcomes of the rendezvous procedure. METHODS:  All consecutive patients with BDI referred to our tertiary referral center between 1995 and 2016 were analyzed. A rendezvous procedure was performed when endoscopic or radiologic intervention failed, and when deemed feasible by a dedicated multidisciplinary team including hepatopancreaticobiliary surgeons, gastrointestinal endoscopists, and interventional radiologists...
January 19, 2018: Endoscopy
https://www.readbyqxmd.com/read/29351683/novel-bilateral-extracavitary-approach-for-thoracolumbar-decompression
#2
Jeffrey P Mullin, Alvin Y Chan, Emily Bennett, Michael P Steinmetz
BACKGROUND: Bilateral extracavitary approach (BECA) is an option for decompression cases that require a more extended ventral approach. The clear advantage is increased accessibility to the most ventral aspects of the spine from a bilateral perspective. OBJECTIVE: To assess the safety and efficacy of thoracic and thoracolumbar decompression and/or reconstruction from BECA. METHODS: A retrospective chart review was performed reviewing all patients who underwent BECA for thoracolumbar decompression from 2003 to 2012 at our institution...
February 1, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29351678/endoscopic-transcranial-duraplasty-for-rhinoliquorrhea-a-cadaveric-study
#3
Andrea Bartoli, Jean H Fasel, Karl Schaller, Max Jägersberg
BACKGROUND: Repair of the anterior skull base for cerebrospinal fluid leak requires either endoscopic endonasal approach or open transcranial approach. OBJECTIVE: To present a less invasive surgical procedure for sealing of the entire anterior fossa floor for traumatic rhinoliquorrhea. METHODS: Cadaver study in 3 head specimens. Endoscopic placement of a furled bovine pericardial patch bilaterally along the sphenoid ridge and planum in guidewire technique...
February 1, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29351637/prospective-multicenter-assessment-of-all-cause-mortality-following-surgery-for-adult-cervical-deformity
#4
Justin S Smith, Christopher I Shaffrey, Han Jo Kim, Peter Passias, Themistocles Protopsaltis, Renaud Lafage, Gregory M Mundis, Eric Klineberg, Virginie Lafage, Frank J Schwab, Justin K Scheer, Emily Miller, Michael Kelly, D Kojo Hamilton, Munish Gupta, Vedat Deviren, Richard Hostin, Todd Albert, K Daniel Riew, Robert Hart, Doug Burton, Shay Bess, Christopher P Ames
BACKGROUND: Surgical treatments for adult cervical spinal deformity (ACSD) are often complex and have high complication rates. OBJECTIVE: To assess all-cause mortality following ACSD surgery. METHODS: ACSD patients presenting for surgical treatment were identified from a prospectively collected multicenter database. Clinical and surgical parameters and all-cause mortality were assessed. RESULTS: Of 123 ACSD patients, 120 (98%) had complete baseline data (mean age, 60...
January 17, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29351567/whole-thorax-irradiation-of-non-human-primates-induces-persistent-nuclear-damage-and-gene-expression-changes-in-peripheral-blood-cells
#5
Shanaz A Ghandhi, Helen C Turner, Igor Shuryak, Gregory O Dugan, J Daniel Bourland, John D Olson, Janet A Tooze, Shad R Morton, Ines Batinic-Haberle, J Mark Cline, Sally A Amundson
We investigated the cytogenetic and gene expression responses of peripheral blood cells of non-human primates (NHP, Macaca mulatta) that were whole-thorax irradiated with a single dose of 10 Gy. In this model, partial irradiation of NHPs in the thoracic region (Whole Thorax Lung Irradiation, WTLI) allows the study of late radiation-induced lung injury, while avoiding acute radiation syndromes related to hematopoietic and gastrointestinal injury. A transient drop in circulating lymphocytes and platelets was seen by 9 days, followed by elevations in respiratory rate, circulating neutrophils, lymphocytes, and monocytes at 60-100 days, corresponding to computed tomography (CT) and histologic evidence of pneumonitis, and elective euthanasia of four animals...
2018: PloS One
https://www.readbyqxmd.com/read/29351558/analysis-of-500-anterior-cruciate-ligament-reconstructions-from-a-private-institutional-register
#6
Lauro Augusto Costa, Noel Oizerovici Foni, Eliane Antonioli, Rogério Teixeira de Carvalho, Isabela Dias Paião, Mário Lenza, Mário Ferretti
PURPOSE: The aims of this study are to describe the epidemiological characteristics of anterior cruciate ligament reconstructions in a private hospital in Brazil and to determine trends in medical practice for comparison with previous studies. METHODS: We retrospectively reviewed the anterior cruciate ligament institutional register to obtain data from all patients who underwent primary anterior cruciate ligament reconstruction from July 2014 to June 2016. Descriptive statistics were used to summarize the sample...
2018: PloS One
https://www.readbyqxmd.com/read/29351465/emerging-potential-benefits-of-modulating-nad-metabolism-in-cardiovascular-disease
#7
Daniel S Matasic, Charles Brenner, Barry London
Nicotinamide adenine dinucleotide (NAD+) and related metabolites are central mediators of fuel oxidation and bioenergetics within cardiomyocytes. Additionally, NAD+ is required for the activity of multifunctional enzymes including sirtuins and poly(ADP-ribose) polymerases (PARPs) that regulate post-translational modifications, DNA damage responses, and calcium signaling. Recent research indicates that NAD+ participates in a multitude of processes dysregulated in cardiovascular diseases. Therefore, supplementation of NAD+ precursors including nicotinamide riboside (NR) that boost or replete the NAD+ metabolome may be cardioprotective...
December 22, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351463/intermediary-metabolism-and-fatty-acid-oxidation-novel-targets-of-electron-transport-chain-driven-injury-during-ischemia-and-reperfusion
#8
Qun Chen, Masood S Younus, Jeremy Thompson, Ying Hu, John M Hollander, Edward J Lesnefsky
BACKGROUND: Cardiac ischemia-reperfusion (IR) damages the electron transport chain (ETC) causing mitochondrial and cardiomyocyte injury. Reversible blockade of the ETC at complex I during ischemia protects the ETC and decreases cardiac injury. In the present study, we used an unbiased proteomic approach to analyze the extent of ETC-driven mitochondrial injury during IR. METHODS: Isolated-perfused mouse (C57BL/6) hearts underwent 25 min global ischemia (37{degree sign}C) and 30 min reperfusion...
December 29, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351456/guidelines-for-measuring-cardiac-physiology-in-mice
#9
Merry L Lindsey, Zamaneh Kassiri, Jitka Amira Ismail Virag, Lisandra E de Castro Bras, Marielle Scherrer-Crosbie
Cardiovascular disease is a leading cause of death, and translational research is needed to better understand mechanisms whereby the left ventricle responds to injury. Mouse models of heart disease have provided valuable insights into mechanisms that occur during cardiac aging and in response to a variety of pathologies. Assessing cardiovascular physiological responses to injury or insult is an important and necessary component of this research. With increasing consideration for rigor and reproducibility, the goal of this guidelines review is to provide best practice information regarding how to accurately measure cardiac physiology in animal models...
January 5, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351455/thrombosis-systemic-and-cardiac-oxidative-stress-and-dna-damage-induced-by-pulmonary-exposure-to-diesel-exhaust-particles-and-the-effect-of-nootkatone-thereon
#10
Abderrahim Nemmar, Suhail Al-Salam, Sumaya Beegam, Priya Yuvaraju, Badreldin H Ali
Adverse cardiovascular effects of particulate air pollution persist even at lower concentrations than those of the current air quality limit. Therefore, identification of safe and effective measures against particles-induced cardiovascular toxicity is needed. Nootkatone is a sesquiterpenoid in grapefruit with diverse bioactivities including anti-inflammatory and antioxidant effects. However, its protective effect on the cardiovascular injury induced by diesel exhaust particles (DEP) has not been studied before...
January 5, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351451/guidelines-for-experimental-models-of-myocardial-ischemia-and-infarction
#11
Merry L Lindsey, Roberto Bolli, John M Canty, Xiao-Jun Du, Nikolaos G Frangogiannis, Stefan Frantz, Robert G Gourdie, Jeffrey W Holmes, Steven P Jones, Robert Kloner, David J Lefer, Ronglih Liao, Elizabeth Murphy, Peipei Ping, Karin Przyklenk, Fabio A Recchia, Lisa Schwartz Longacre, Crystal May Ripplinger, Jennifer E Van Eyk, Gerd Heusch
Myocardial infarction is a prevalent major cardiovascular event that arises from myocardial ischemia with or without reperfusion, and basic and translational research is needed to better understand its underlying mechanisms and consequences for cardiac structure and function. Ischemia underlies a broad range of clinical scenarios ranging from angina to hibernation to permanent occlusion, and while reperfusion is mandatory for salvage from ischemic injury, reperfusion also inflicts injury on its own. In this consensus statement, we present recommendations for animal models of myocardial ischemia and infarction...
January 12, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351446/mechanisms-and-consequences-of-oxidative-stress-in-lung-disease-therapeutic-implications-for-an-aging-populace
#12
Louise Hecker
The rapid expansion of the elderly population has led to the recent epidemic of age-related diseases, including increased incidence and mortality of chronic and acute lung diseases. Numerous studies have implicated aging and oxidative stress in the pathogenesis of various pulmonary diseases; however, despite recent advances in these fields, the specific contributions of aging and oxidative stress remain elusive. This review will discuss the consequences of aging on lung morphology and physiology, and how redox imbalance with aging contributes to lung disease susceptibility...
December 14, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29351435/effects-of-cigarette-smoke-on-pulmonary-endothelial-cells
#13
Qing Lu, Eric Gottlieb, Sharon Rounds
Cigarette smoking is the leading cause of preventable disease and death in the US. Cardiovascular co-morbidities associated with both active and secondhand cigarette smoking indicate the vascular toxicity of smoke exposure. Growing evidence supports the injurious effect of cigarette smoke on pulmonary endothelial cells and the roles of endothelial cell injury in development of Acute Respiratory Distress Syndrome (ARDS), emphysema, and pulmonary hypertension. This review summarizes results from studies of humans, preclinical animal models, and cultured endothelial cells that document toxicities of cigarette smoke exposure on pulmonary endothelial cell functions, including barrier dysfunction, endothelial activation and inflammation, apoptosis, and vasoactive mediator production...
January 4, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29351433/%C3%AE-nitrostyrene-derivatives-attenuate-lps-mediated-acute-lung-injury-via-the-inhibition-of-neutrophil-platelet-interactions-and-net-release
#14
Yao-Wen Chang, Ching-Ping Tseng, Chih-Hsun Lee, Tsong-Long Hwang, Yu-Li Chen, Mei-Tzu Su, Kowit-Yu Chong, Ying-Wei Lan, Chin-Chung Wu, Kung-Ju Chen, Fen-Hua Lu, Hsiang-Ruei Liao, Chuen Hsueh, Pei-Wen Hsieh
Acute lung injury (ALI) and the acute respiratory distress syndrome (ARDS) are high-mortality and life-threatening diseases that are associated with neutrophil activation and accumulation within lung tissue. Emerging evidence indicates that neutrophil-platelet aggregates (NPAs) at sites of injury increases acute inflammation and contributes to the development of ALI. Even though numerous studies have increased our understanding of the pathophysiology of ALI, there is still a lack of innovative and useful treatments that reduce mortality, emphasizing that there is an urgent need for novel treatment strategies...
January 11, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29351418/red-blood-cell-antibody-induced-anemia-causes-differential-degrees-of-tissue-hypoxia-in-kidney-and-brain
#15
Nikhil Mistry, C David Mazer, John G Sled, Alan H Lazarus, Lindsay S Cahill, Max Solish, Yu-Qing Zhou, Nadya Romanova, Alexander Gm Hare, Allan Doctor, Joseph A Fisher, Keith R Brunt, Jeremy A Simpson, Gregory M T Hare
Moderate anemia is associated with increased mortality and morbidity, including acute kidney injury (AKI), in surgical patients. A red blood cell (RBC)-specific antibody model was utilized to determine if moderate subacute anemia could result in tissue hypoxia as a potential mechanism of injury. Cardiovascular and hypoxic cellular responses were measured in transgenic mice capable of expressing hypoxia-inducible factor-1α (HIF-1α)-luciferase activity in vivo. Antibody-mediated anemia was associated with mild intravascular hemolysis (6 hours) and splenic RBC sequestration (day 4), resulting in a nadir hemoglobin concentration of 89{plus minus}13 g/L at day 4...
January 10, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29351405/acute-down-regulation-of-mir-199a-attenuates-sepsis-induced-acute-lung-injury-by-targeting-sirt1
#16
Yang Liu, Hao Guan, Ju-Lei Zhang, Zhao Zheng, Hong-Tao Wang, Ke Tao, Shi-Chao Han, Lin-Lin Su, Dahai Hu
MiR-199a is a novel gene regulator with an important role in inflammation and lung injury. However, its role in the pathogenesis of sepsis-induced acute respiratory distress syndrome (ARDS) is currently unknown. Our study explored the role of miR-199a in sepsis-induced ARDS and its mechanism of action. First, we found that LPS could up-regulate miR-199a in alveolar macrophages. Down-regulation of miR-199a inhibited the up-regulation of inflammatory cytokines in alveolar macrophages and induced the remission of histopathologic changes, the reduction of pro-inflammatory cytokines, and the up-regulation of apoptosis protein expression in an ARDS lung, showing a protective role for miR-199a...
January 10, 2018: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29351397/acute-small-intestinal-inflammation-results-in-persistent-lymphatic-alterations
#17
Sonia Rehal, Matthew Stephens, Simon Roizes, Shan Liao, Pierre-Yves von der Weid
Inflammatory bowel disease (IBD) has a complex pathophysiology with limited treatments. Structural and functional changes in the intestinal lymphatic system have been associated with the disease, with increased risk of IBD occurrence linked to a history of acute intestinal injury. To examine the potential role of the lymphatic system in inflammation recurrence, we evaluated morphological and functional changes in mouse mucosal and mesenteric lymphatic vessels, and within the mesenteric lymph nodes during acute ileitis caused by a 7-day treatment with dextran sodium sulfate (DSS)...
December 14, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29351391/the-bile-acids-deoxycholic-acid-and-ursodeoxycholic-acid-regulate-colonic-epithelial-wound-healing
#18
Magdalena S Mroz, Natalia K Lajczak, Bridie J Goggins, Simon Keely, Stephen Joseph Keely
The intestinal epithelium constitutes an innate barrier which, upon injury, undergoes self-repair processes known as restitution. Although, bile acids are known as important regulators of epithelial function in health and disease, their effects on wound healing processes are not yet clear. Here we set out to investigate the effects of the colonic bile acids, deoxycholic acid (DCA) and ursodeoxycholic acid (UDCA) on epithelial restitution. Wound healing in T84 cell monolayers grown on transparent, permeable, supports was assessed over 48 hrs {plus minus} bile acids...
January 11, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29351389/proliferation-of-hepatic-stellate-cells-mediated-by-yap-and-taz-contributes-to-liver-repair-and-regeneration-after-liver-ischemia-reperfusion-injury
#19
Takanori Konishi, Rebecca M Schuster, Alex B Lentsch
Yes-associated protein (YAP) and transcriptional co-activator with PDZ-binding motif (TAZ) are key regulators of cell proliferation and organ size, however, their physiological contribution after liver injury has not been fully understood. In this study, we sought to determine the role of YAP and TAZ during liver recovery after ischemia-reperfusion (I/R). A murine model of partial (70%) I/R was used to induce liver injury and study the reparative and regenerative response. After liver injury, there was marked activation and proliferation of hepatic stellate cells...
January 11, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29351386/protective-effect-of-c-peptide-on-experimentally-induced-diabetic-nephropathy-and-the-possible-link-between-c-peptide-and-nitric-oxide
#20
Eman A Elbassuoni, Neven M Aziz, Nashwa F El-Tahawy
Diabetic nephropathy one of the major microvascular diabetic complications. Besides hyperglycemia, other factors contribute to the development of diabetic complications as the proinsulin connecting peptide, C-peptide. We described the role of C-peptide replacement therapy on experimentally induced diabetic nephropathy, and its potential mechanisms of action by studying the role of Nitric oxide (NO) as a mediator of C-peptide effects by in vivo modulating its production by NG-nitro-L-arginine methyl ester (L-NAME)...
January 19, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
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