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https://www.readbyqxmd.com/read/28736528/linking-ventilator-injury-induced-leak-across-the-blood-gas-barrier-to-derangements-in-murine-lung-function
#1
Bradford J Smith, Elizabeth Bartolak-Suki, Bela Suki, Gregory S Roy, Katharine L Hamlington, Chantel M Charlebois, Jason H T Bates
Mechanical ventilation is vital to the management of acute respiratory distress syndrome, but it frequently leads to ventilator-induced lung injury (VILI). Understanding the pathophysiological processes involved in the development of VILI is an essential prerequisite for improving lung-protective ventilation strategies. The goal of this study was to relate the amount and nature of material accumulated in the airspaces to biomarkers of injury and the derecruitment behavior of the lung in VILI. Forty-nine BALB/c mice were mechanically ventilated with combinations of tidal volume and end-expiratory pressures to produce varying degrees of overdistension and atelectasis while lung function was periodically assessed...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28736350/antibiotic-prophylaxis-in-endoscopic-endonasal-pituitary-and-skull-base-surgery
#2
Laura Milanese, Matteo Zoli, Giacomo Sollini, Chiara Martone, Corrado Zenesini, Carmelo Sturiale, Paolo Farneti, Giorgio Frank, Ernesto Pasquini, Diego Mazzatenta
OBJECTIVE: Postoperative infection is a potentially dramatic consequence in endoscopic endonasal surgery. The aim of this study is to assess the efficacy of our intraoperative antibiotic prophylaxis, analyzing the risk factors of postoperative meningitis in our series. METHODS: Each endoscopic endonasal procedure performed since 1998 in patients with no preoperative infections and a follow-up longer than 30 days have been included and retrospectively reviewed. Antibiotic protocol consisted in single antibiotic administration of ampicillin/sulbactam 3 g or cefazolin 2 g on induction, no postoperative administrations have been performed after 2005...
July 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28731395/nasoseptal-flap-necrosis-a-rare-complication-of-endoscopic-endonasal-surgery
#3
Joseph D Chabot, Chirag R Patel, Marion A Hughes, Eric W Wang, Carl H Snyderman, Paul A Gardner, Juan C Fernandez-Miranda
OBJECTIVE The vascularized nasoseptal flap (NSF) has become the workhorse for skull base reconstruction during endoscopic endonasal surgery (EES) of the ventral skull base. Although infrequently reported, as with any vascularized flap the NSF may undergo ischemic necrosis and become a nidus for infection. The University of Pittsburgh Medical Center's experience with NSF was reviewed to determine the incidence of necrotic NSF in patients following EES and describe the clinical presentation, imaging characteristics, and risk factors associated with this complication...
July 21, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28721079/burden-of-air-leak-complications-in-thoracic-surgery-estimated-using-a-national-hospital-billing-database
#4
Andrew Yoo, Sudip K Ghosh, Walter Danker, Edmund Kassis, Iftekhar Kalsekar
BACKGROUND: One of the most common outcomes of lung resections are parenchymal air leaks. These air leaks are most often self-limited and spontaneously resolve several days after surgery. Historically, only prolonged air leaks have been considered to have a significant effect on patient outcomes. This study aims to evaluate the impact of any air leak complications (aALCs) on resource utilization and mortality. METHODS: The Premier Perspective(®) database was used to identify all elective primary lobectomy, segmentectomy, and wedge resections performed from 2012 to 2014; aALC was defined as a composite of air leak and pneumothorax...
2017: ClinicoEconomics and Outcomes Research: CEOR
https://www.readbyqxmd.com/read/28719710/conservative-management-of-postoperative-chylous-fistula-with-octreotide-and-peripheral-total-parenteral-nutrition
#5
Jason Y Chan, Eddy W Wong, S K Ng, C Andrew van Hasselt, Alexander C Vlantis
Postoperative chylous fistula after neck dissection is an uncommon complication associated with significant patient morbidity. Octreotide acetate is a somatostatin analogue established in the treatment of chylothorax; however, its utility in the management of cervical chylous fistulae has not been fully evaluated. The investigators hypothesized that chylous fistula can be managed by a combination of octreotide and peripheral total parenteral nutrition (TPN). A retrospective review of cases compiled at our institution from 2009 to 2015 was conducted...
July 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28709868/protective-effect-of-p53-on-the-viability-of-intervertebral-disc-nucleus-pulposus-cells-under-low-glucose-condition
#6
Xifeng Xiong, Libing Dai, Weiguo Liang, Jinli Zhang, Shengnan Qin, Wenjuan Cao, Dongping Ye, Peihong Liang, Zhihe Liu
P53 is a famous cancer suppressor and plays key roles in metabolism. Intervertebral disc (IVD) is the largest avascular cartilaginous structure in humans and its degeneration is a common cause of spine diseases initiated from damaged nucleus pulposus (NP) cells. The potential cause of disc degeneration has been attributed to aging, genetic factors, mechanical factors and nutrition. In this study, we found that p53 decreased and leaked to the cytoplasm in NP cells as the glucose level decreases, in contrast to cancer cells in which p53 increases and concentrates to the nuclei...
July 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28706900/extrapleural-pneumonectomy-epp-vs-pleurectomy-decortication-p-d
#7
REVIEW
Hasan Fevzi Batirel
Surgical techniques for treatment of malignant pleural mesothelioma (MPM) have improved over the decades. The main surgical principle was accepted as macroscopic complete resection. This principle was achieved with extrapleural pneumonectomy (EPP) and extended pleurectomy/decortication (P/D). Mortality and morbidity are higher following EPP with supraventricular arrhythmias, pulmonary embolism, bronchopleural fistula and pulmonary failure being the most common, while prolonged air leak is frequent following P/D...
June 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28702740/large-bariatric-specific-stents-and-over-the-scope-clips-in-the-management-of-post-bariatric-surgery-leaks
#8
Hany Shehab, Emad Abdallah, Khaled Gawdat, Inas Elattar
BACKGROUND: Endoscopic stents are successful in the management of surgical leaks; however, stent migration remains a significant problem. In this study, we present our approach depending on a large bariatrics-specific stent (Mega stent) and over-the-scope clips in the management of post-bariatric surgery leaks. METHODS: A retrospective analysis of all patients with post-bariatric surgery leaks treated at our institution using an approach reliant on Mega stents and over-the-scope clips was conducted...
July 12, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28697437/novel-ex-vivo-protocol-using-porcine-vagina-to-assess-drug-permeation-from-mucoadhesive-and-colloidal-pharmaceutical-systems
#9
Maíra N Pereira, Thaiene A Reis, Breno N Matos, Marcílio Cunha-Filho, Taís Gratieri, Guilherme M Gelfuso
Local treatment of vaginal diseases presents advantages over systemic treatments and the interaction of the drug delivery systems with the biological tissue is a key factor for a successful vaginal topical therapy. Conventional protocols for permeation studies have high variability and fail in distinguishing drug penetration from mucoadhesive or colloidal drug delivery systems from conventional formulations, as tissue interaction is normally under estimated. The protocol presented in this paper is a simplified ex vivo vertical model, in which formulations are placed in hung porcine vaginas with the objective of mimicking a condition closer to the biological circumstance, specifically considering the possible leak from the vaginal canal in the vertical position...
July 6, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28694388/annexin-a2-supports-pulmonary-microvascular-integrity-by-linking-vascular-endothelial-cadherin-and-protein-tyrosine-phosphatases
#10
Min Luo, Elle C Flood, Dena Almeida, LunBiao Yan, David A Berlin, Paul M Heerdt, Katherine A Hajjar
Relative or absolute hypoxia activates signaling pathways that alter gene expression and stabilize the pulmonary microvasculature. Alveolar hypoxia occurs in disorders ranging from altitude sickness to airway obstruction, apnea, and atelectasis. Here, we report that the phospholipid-binding protein, annexin A2 (ANXA2) functions to maintain vascular integrity in the face of alveolar hypoxia. We demonstrate that microvascular endothelial cells (ECs) from Anxa2(-/-) mice display reduced barrier function and excessive Src-related tyrosine phosphorylation of the adherens junction protein vascular endothelial cadherin (VEC)...
July 10, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28690123/pedicled-omental-flaps-in-the-treatment-of-complex-spinal-wounds-after-en-bloc-resection-of-spine-tumors
#11
Andrea Sambri, Alessandro Gasbarrini, Sergio Cialdella, Pierandrea De Iaco, Stefano Boriani
STUDY DESIGN: The present paper presents a retrospective study of 5 patients who underwent pedicled omental flap procedure following spine tumor removal. SUMMARY OF BACKGROUND DATA: Postoperative wound dehiscence represents a major complication in spinal surgery, particularly after en bloc tumor resection, because of the extended sacrifice of soft tissues and adjuvant radiation therapy and chemotherapy. METHODS: Five patients, with a mean age of 52 years (range, 24-71 years), who underwent omental flaps for the treatment of postoperative complication in spine tumor resections were retrospectively evaluated...
June 16, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28684726/hepatic-artery-pseudoaneurysm-following-orthotopic-liver-transplantation-increasing-clinical-suspicion-for-a-rare-but-lethal-pathology
#12
Jon Harrison, Meredith Harrison, Cataldo Doria
BACKGROUND Despite an incidence of between 1% and 2%, the mortality rate in ruptured hepatic artery pseudoaneurysm after orthotopic liver transplantation approaches 69%. Our aim is to report operative and outcomes data for 7 patients with pseudoaneurysm following transplant at 1 institution, with emphasis on suspected risk factors for aneurysm formation. From these risk factors, we performed a systematic review to assess their clinical saliency. MATERIAL AND METHODS Using PRISMA guidelines, we completed a PubMed and online database review to gather studies addressing risk factors for pseudoaneurysm following transplant...
July 7, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28684623/calcium-and-excitation-contraction-coupling-in-the-heart
#13
REVIEW
David A Eisner, Jessica L Caldwell, Kornél Kistamás, Andrew W Trafford
Cardiac contractility is regulated by changes in intracellular Ca concentration ([Ca(2+)]i). Normal function requires that [Ca(2+)]i be sufficiently high in systole and low in diastole. Much of the Ca needed for contraction comes from the sarcoplasmic reticulum and is released by the process of calcium-induced calcium release. The factors that regulate and fine-tune the initiation and termination of release are reviewed. The precise control of intracellular Ca cycling depends on the relationships between the various channels and pumps that are involved...
July 7, 2017: Circulation Research
https://www.readbyqxmd.com/read/28682966/management-of-low-colorectal-anastomotic-leakage-in-the-laparoscopic-era-more-than-a-decade-of-experience
#14
Stephen Alexander Boyce, Craig Harris, Andrew Stevenson, John Lumley, David Clark
BACKGROUND: Anastomotic leak after colorectal surgery increases postoperative mortality, cancer recurrence, permanent stoma formation, and poor bowel function. Anastomosis between the colon and rectum is a particularly high risk. Traditional management mandates laparotomy, disassembly of the anastomosis, and formation of an often-permanent stoma. After laparoscopic colorectal surgery it may be possible to manage anastomotic failure with laparoscopy, thus avoiding laparotomy. OBJECTIVE: The purpose of this study was to determine the feasibility of the laparoscopic management of failed low colorectal anastomoses...
August 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/28682743/recent-uptrend-in-whole-grain-intake-is-absent-for-low-income-adolescents-national-health-and-nutrition-examination-survey-2005-2012
#15
June M Tester, Cindy W Leung, Tashara M Leak, Barbara A Laraia
INTRODUCTION: Whole-grain consumption reduces risk of chronic disease, yet adolescents consume suboptimal amounts. It is unclear whether trends in consumption of whole grains have been positive among adolescents, and research assessing disparities by socioeconomic status is limited. The objective of our study was to evaluate recent trends in whole-grain consumption by US adolescents. METHODS: We examined data on 3,265 adolescents aged 13 to18 years from the National Health and Nutrition Examination Survey (NHANES) 2005-2012...
July 6, 2017: Preventing Chronic Disease
https://www.readbyqxmd.com/read/28676373/middle-age-exacerbates-acute-respiratory-distress-syndrome-in-a-double-hit-murine-model
#16
Guillaume Voiriot, Damien Contou, Jeanne Tran Van Nhieu, Valerie Amsellem, Elisabeth Marcos, Mehdi Latiri, Serge Adnot, Bernard Maitre, Armand Mekontso Dessap
RATIONALE: In a recent systematic review, aging has been identified as the only factor independently associated with mortality during human acute respiratory distress syndrome (ARDS). We explored this age-dependent severity in a clinically relevant double hit murine ARDS model. METHODS: Young adult (Y, 10-12weeks) and middle-old (O, 12-13months) male C57BL6 mice underwent an aspiration of Escherichia coli lipopolysaccharide (LPS) or control saline vehicle. Twenty hours later, four groups of mice were sacrificed [Y(control), O(control), Y(LPS) and O(LPS)]...
July 1, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28673063/a-study-of-clinical-predictors-associated-with-intrinsic-sphincter-deficiency-in-women-with-stress-urinary-incontinence
#17
Kyung Kgi Park, Sung Dae Kim, Jung-Sik Huh, Young-Joo Kim
PURPOSE: Recently, intrinsic sphincter deficiency (ISD) has been identified as one important factor in the outcome of stress urinary incontinence (SUI) related surgery. Clinical factors that can predict ISD are uncommon. The aim of this study was to determine predictive clinical factors for ISD in female patients with SUI. METHODS: The patients were classified into 3 groups according to the value of Valsalva leak point pressure (VLPP)>90 cm H2O (anatomical incontinence, AI), between 61 and 90 cm H2O (equivocal, EV), and <60 cm H2O (ISD)...
June 2017: International Neurourology Journal
https://www.readbyqxmd.com/read/28661215/anastomotic-leak-after-surgical-repair-of-type-a-aortic-dissection-prevalence-and-consequences-in-midterm-follow-up
#18
Tamer Ghazy, Adrian Mahlmann, Zuzana Fajfrova, Ayham Darwish, Mohamed Eraqi, Helena Hegelmann, Ralf-Thorsten Hoffmann, Ahmed Ouda, Klaus Matschke, Utz Kappert, Norbert Weiss
BACKGROUND: This study reports the mid-term prevalence and therapeutic consequences of anastomotic leaks after surgery for Stanford type A aortic dissections. PATIENTS AND METHODS: From July 2007 to July 2013, 93 patients survived surgery for acute type A dissections at our center and underwent a standardized follow-up. The pre-, peri-, and postoperative as well as the midterm results were collected prospectively. Follow-up computed tomography (CT) imaging was performed 7 days, 3, and 12 months after surgery, and yearly thereafter, to assess the presence or progression of anastomotic leaks at the aorto-prosthesis anastomotic sites...
June 29, 2017: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/28653388/factors-associated-with-colostrum-immunoglobulin-g-concentration-in-northern-victorian-dairy-cows
#19
A J Phipps, D S Beggs, A J Murray, P D Mansell, M F Pyman
OBJECTIVES: To determine the proportion of first-milking colostrum samples produced on four northern-Victorian dairy farms that meet industry standards in terms of immunoglobulin G (IgG) concentration and to identify risk factors that affect colostrum quality. METHODS: Colostrum IgG concentrations from 442 dairy cows on four farms were estimated using a Brix refractometer and risk factors for colostrum IgG concentration were determined using multivariable logistic regression...
July 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28650461/a-light-and-calcium-gated-transcription-factor-for-imaging-and-manipulating-activated-neurons
#20
Wenjing Wang, Craig P Wildes, Tanyaporn Pattarabanjird, Mateo I Sanchez, Gordon F Glober, Gillian A Matthews, Kay M Tye, Alice Y Ting
Activity remodels neurons, altering their molecular, structural, and electrical characteristics. To enable the selective characterization and manipulation of these neurons, we present FLARE, an engineered transcription factor that drives expression of fluorescent proteins, opsins, and other genetically encoded tools only in the subset of neurons that experienced activity during a user-defined time window. FLARE senses the coincidence of elevated cytosolic calcium and externally applied blue light, which together produce translocation of a membrane-anchored transcription factor to the nucleus to drive expression of any transgene...
June 26, 2017: Nature Biotechnology
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