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https://www.readbyqxmd.com/read/28718229/comparison-of-pre-operative-curvature-with-postoperative-curvature-in-root-canals-treated-with-k-3-rotary-systems
#1
Sana Ehsen Nagi, Farhan Raza Khan
BACKGROUND: With root canal treatment, the organic debris and micro-organisms from pulp space is removed and an ideal canal preparation is achieved that is conducive of hermetic obturation. The purpose of this study was to correlate the pre-operative canal curvature with the postoperative curvature in human extracted teeth prepared with K-3 rotary systems. METHODS: The root canal preparation was carried out on extracted human molars and premolars using K-3 endodontic rotary files...
April 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28716475/fouling-assemblage-of-benthic-plastic-debris-collected-from-mersin-bay-ne-levantine-coast-of-turkey
#2
Sedat Gündoğdu, Cem Çevik, Serkan Karaca
The Mediterranean is an ecosystem that faces more and more microplastic pollution every day. This causes the whole of the Mediterranean to face the negative effects of plastic pollution. This study examines the state of plastic debris and fouling organisms found on it in one of the areas most affected by plastic pollution, Mersin Bay. As a result, a total of 3.88kg plastic (mean=0,97kg; n=120; 2670item/km(2); 86,3kg/km(2)) was collected and based on the ATR-FTIR analysis, it was determined that this total contained 9 types of plastics...
July 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28714933/macrophage-phenotypes-regulate-scar-formation-and-chronic-wound-healing
#3
REVIEW
Mark Hesketh, Katherine B Sahin, Zoe E West, Rachael Z Murray
Macrophages and inflammation play a beneficial role during wound repair with macrophages regulating a wide range of processes, such as removal of dead cells, debris and pathogens, through to extracellular matrix deposition re-vascularisation and wound re-epithelialisation. To perform this range of functions, these cells develop distinct phenotypes over the course of wound healing. They can present with a pro-inflammatory M1 phenotype, more often found in the early stages of repair, through to anti-inflammatory M2 phenotypes that are pro-repair in the latter stages of wound healing...
July 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28714082/in-situ-macrophage-phenotypic-transition-is-affected-by-altered-cellular-composition-prior-to-acute-sterile-muscle-injury
#4
Andreas Patsalos, Attila Pap, Tamas Varga, Gyorgy Trencsenyi, Gerardo Alvarado Contreras, Ildiko Garai, Zoltan Papp, Balazs Dezso, Eva Pintye, Laszlo Nagy
Skeletal muscle regeneration is a complex interplay between various cell types including invading macrophages. Their recruitment to damaged tissues upon acute sterile injuries is necessary for necrotic debris clearance and for coordination of tissue regeneration. This highly dynamic process is characterized by an in-situ transition of infiltrating monocytes from an inflammatory (Ly6C(high) ) to a repair (Ly6C(low) ) macrophage phenotype. The importance of the macrophage phenotypic shift and the cross-talk of the local muscle tissue with the infiltrating macrophages during tissue regeneration upon injury are not fully understood and their study lacks adequate methodology...
July 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28713067/eus-guided-drainage-of-peripancreatic-fluid-collections-with-lumen-apposing-metal-stents-and-plastic-double-pigtail-stents-comparison-of-efficacy-and-adverse-event-rates
#5
Gabriel D Lang, Cassandra Fritz, Trisha Bhat, Koushik K Das, Faris M Murad, Dayna S Early, Steven A Edmundowicz, Vladimir M Kushnir, Daniel K Mullady
BACKGROUND AND AIMS: Transmural drainage with double-pigtail plastic stents (DPPSs) was the mainstay of endoscopic therapy for symptomatic peri-pancreatic fluid collections (PPFCs) until the introduction of lumen-apposing covered self-expanding metal stents (LAMSs). Currently, there is limited data regarding the efficacy and adverse event rate of LAMS compared with DPPS. METHODS: A retrospective analysis of EUS-guided PPFC drainages at a single tertiary care center between 2008 and 2015 was performed...
July 13, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28710154/outcomes-following-revision-surgery-performed-for-adverse-reactions-to-metal-debris-in-non-metal-on-metal-hip-arthroplasty-patients-analysis-of-185-revisions-from-the-national-joint-registry-for-england-and-wales
#6
G S Matharu, A Judge, D W Murray, H G Pandit
OBJECTIVES: Few studies have assessed outcomes following non-metal-on-metal hip arthroplasty (non-MoMHA) revision surgery performed for adverse reactions to metal debris (ARMD). We assessed outcomes following non-MoMHA revision surgery performed for ARMD, and identified predictors of re-revision. METHODS: We performed a retrospective observational study using data from the National Joint Registry for England and Wales. All non-MoMHAs undergoing revision surgery for ARMD between 2008 and 2014 were included (185 hips in 185 patients)...
July 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28708251/efficacy-of-photon-initiated-photoacoustic-streaming-on-apically-extruded-debris-with-different-preparation-systems-in-curved-canals
#7
D Arslan, A Kustarci
AIM: To determine the effect of photon-initiated photoacoustic streaming (PIPS) on the extrusion of debris using multiple-file (ProTaper Next-PTN) and single-file (One Shape-OS) continuous rotary systems in curved canals in human molar teeth. METHODOLOGY: Sixty extracted maxillary first molar teeth with curved mesial roots, mature apices and of similar lengths were selected. Teeth with apical diameters larger than size 15 were discarded. The teeth were randomly divided into 4 experimental groups (n=15 teeth per group) according to the file used and irrigation systems: (1) OS with PIPS with a 2940 nm Er:YAG laser (0...
July 14, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28707830/-patients-with-metal-on-metal-hip-arthroplasty-evaluation-and-management-of-complications
#8
Olivier Guyen, Christophe Tissot
The potentially severe complications related to metal-on-metal (MoM) hip replacements have led to a dramatic decrease of their use. Large diameter heads are more likely to fail than smaller diameters, but complications have been described even with « small » diameters. Therefore, monitoring of MoM arthroplasties is mandatory. This includes physical examination, X-Rays, metal ion levels, and potentially cross-sectional imaging. Despite pathophysiology of adverse reactions to metal debris (ARMD) is better understood, their evolution and the potential systemic complications remain unclear...
December 14, 2016: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28707239/microplastic-pollution-in-deposited-urban-dust-tehran-metropolis-iran
#9
Sharareh Dehghani, Farid Moore, Razegheh Akhbarizadeh
Environmental pollutants such as microplastics have become a major concern over the last few decades. We investigated the presence, characteristics, and potential health risks of microplastic dust ingestion. The plastic load of 88 to 605 microplastics per 30 g dry dust with a dominance of black and yellow granule microplastics ranging in size from 250 to 500 μm was determined in 10 street dust samples using a binocular microscope. Fluorescence microscopy was found to be ineffective for detecting and counting plastic debris...
July 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28705429/disinfection-of-tonometers-a-report-by-the-american-academy-of-ophthalmology
#10
Anna K Junk, Philip P Chen, Shan C Lin, Kouros Nouri-Mahdavi, Sunita Radhakrishnan, Kuldev Singh, Teresa C Chen
OBJECTIVE: To examine the efficacy of various disinfection methods for reusable tonometer prisms in eye care and to highlight how disinfectants can damage tonometer tips and cause subsequent patient harm. METHODS: Literature searches were conducted last in October 2016 in the PubMed and the Cochrane Library databases for original research investigations. Reviews, non-English language articles, nonophthalmology articles, surveys, and case reports were excluded. RESULTS: The searches initially yielded 64 unique citations...
July 11, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28705066/primary-cystic-lesions-of-the-retrorectal-space-mri-evaluation-and-clinical-assessment
#11
Roy S Dwarkasing, Sylvia I Verschuuren, Geert J L H van Leenders, Loes M M Braun, Gabriel P Krestin, W Rudolph Schouten
OBJECTIVE: The purpose of this study was to assess the a priori chance that primary cystic lesions of the retrorectal space are malignant and to investigate MRI characteristics that indicate malignancy. MATERIALS AND METHODS: Patients referred to a center for colorectal surgery were recruited from 2000 to 2014. Lesions were proven by clinical assessment and histopathology. MRI was performed at 1.5 T with examinations evaluated by two radiologists. Interobserver agreement was assessed (Cohen kappa) and differences between malignant and benign lesions calculated (Fisher exact test)...
July 13, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28701426/dynamics-of-in-vivo-asc-speck-formation
#12
Paola Kuri, Nicole L Schieber, Thomas Thumberger, Joachim Wittbrodt, Yannick Schwab, Maria Leptin
Activated danger or pathogen sensors trigger assembly of the inflammasome adaptor ASC into specks, large signaling platforms considered hallmarks of inflammasome activation. Because a lack of in vivo tools has prevented the study of endogenous ASC dynamics, we generated a live ASC reporter through CRISPR/Cas9 tagging of the endogenous gene in zebrafish. We see strong ASC expression in the skin and other epithelia that act as barriers to insult. A toxic stimulus triggered speck formation and rapid pyroptosis in keratinocytes in vivo...
July 12, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28701310/deletion-of-%C3%AE-1-integrin-in-collecting-duct-principal-cells-leads-to-tubular-injury-and-renal-medullary-fibrosis
#13
Fahmy A Mamuya, Dongping Xie, Lei Lei, Ming Huang, Kenji Tsuji, Diane E Capen, Baoxue Yang, Ralph Weissleder, Teodor G Păunescu, Hua Jenny Lu
The renal collecting duct (CD) contains two major cell types, intercalated (ICs) and principal cells (PCs). A previous report showed that deletion of β-1 integrin in the entire renal CD causes defective CD morphogenesis resulting in kidney dysfunction. However, subsequent deletion of β-1 integrin specifically in ICs, and PCs respectively did not cause any morphological defects in the CDs. The discrepancy between these studies prompts us to reinvestigate the role of β-1 integrin in CD cells, specifically in the PCs...
July 12, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28698419/-aortoesophageal-fistula-due-to-aortic-aneurysm-report-of-a-case
#14
Satoshi Yuhara, Takuya Kimura, Hideyuki Okawa, Hiroki Hasegawa, Jun Yokote, Yukifusa Yokoyama, Syuji Tamaki
A 77-year-old woman presented with general fatigue, was found to have anemia, and was referred to our hospital. Upper gastrointestinal endoscopy revealed a submucosal elevated lesion with a bleeding site and debris at the middle thoracic esophagus. Enhanced computed tomography demonstrated a thoracic aortic aneurysm compressing the esophagus. She was diagnosed with an aorto-esophageal fistula due to the thoracic aortic aneurysm. Graft replacement was performed under partial extracorporeal circulation. Because the perforation of the esophagus was small, omental flap transposition was performed without esophagectomy...
July 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28697811/effect-of-an-intervention-in-storm-drains-to-prevent-aedes-aegypti-reproduction-in-salvador-brazil
#15
Raquel Lima Souza, Vánio André Mugabe, Igor Adolfo Dexheimer Paploski, Moreno S Rodrigues, Patrícia Sousa Dos Santos Moreira, Leile Camila Jacob Nascimento, Christopher Michael Roundy, Scott C Weaver, Mitermayer Galvão Reis, Uriel Kitron, Guilherme Sousa Ribeiro
BACKGROUND: Aedes aegypti, the principal vector for dengue, chikungunya and Zika viruses, is a synanthropic species that uses stagnant water to complete its reproductive cycle. In urban settings, rainfall water draining structures, such as storm drains, may retain water and serve as a larval development site for Aedes spp. reproduction. Herein, we describe the effect of a community-based intervention on preventing standing water accumulation in storm drains and their consequent infestation by adult and immature Ae...
July 11, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28697439/targeting-dendritic-cells-for-the-treatment-of-autoimmune-disorders
#16
REVIEW
C Sousa, I Pereira, A C Santos, C Carbone, A B Kovačević, A M Silva, E B Souto
In the last decades, it has been recognized that extracellular vesicles (EVs) are not only cell debris with no biological role, but instead they play a key role in information exchange between cells either in health and disease conditions. EVs exhibit indeed their biological role in a pleiotropic manner. They can modulate immune responses through the activation, transfer or removal of surface receptors on target cells, the removal of cytolytic components such as membrane attack complexes, and the transfer of signaling molecules/effectors, such as nucleic acid species, infectious particles, and oncogenes...
June 30, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28697277/who-would-be-willing-to-accept-disaster-debris-in-their-backyard-investigating-the-determinants-of-public-attitudes-in-post-fukushima-japan
#17
Naomi Aoki
In the wake of the 2011 Great East Japan Earthquake and tsunami, the Ministry of Environment in Japan asked municipalities nationwide to accept and treat disaster waste. This call for cross-jurisdictional waste treatment provoked considerable public controversy. To explore how the national and municipal governments can seek more public acceptance in the wake of future disasters, this study implemented a nationwide survey and addressed the question of what factors influence the public's willingness to support their municipalities' plans to host disaster waste...
July 11, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28696291/on-the-debris-level-origins-of-adhesive-wear
#18
Ramin Aghababaei, Derek H Warner, Jean-François Molinari
Every contacting surface inevitably experiences wear. Predicting the exact amount of material loss due to wear relies on empirical data and cannot be obtained from any physical model. Here, we analyze and quantify wear at the most fundamental level, i.e., wear debris particles. Our simulations show that the asperity junction size dictates the debris volume, revealing the origins of the long-standing hypothesized correlation between the wear volume and the real contact area. No correlation, however, is found between the debris volume and the normal applied force at the debris level...
July 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28696010/myelin-as-an-inflammatory-mediator-myelin-interactions-with-complement-macrophages-and-microglia-in-spinal-cord-injury
#19
REVIEW
Timothy J Kopper, John C Gensel
Spinal cord injury (SCI) triggers chronic intraspinal inflammation consisting of activated resident and infiltrating immune cells (especially microglia/macrophages). The environmental factors contributing to this protracted inflammation are not well understood; however, myelin lipid debris is a hallmark of SCI. Myelin is also a potent macrophage stimulus and target of complement-mediated clearance and inflammation. The downstream effects of these neuroimmune interactions have the potential to contribute to ongoing pathology or facilitate repair...
July 11, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28695619/m%C3%A3-ller-glia-and-phagocytosis-of-cell-debris-in-retinal-tissue
#20
REVIEW
Ruth Bejarano-Escobar, Hortensia Sánchez-Calderón, Josué Otero-Arenas, Gervasio Martín-Partido, Javier Francisco-Morcillo
Müller cells are the predominant glial cell type in the retina of vertebrates. They play a wide variety of roles in both the developing and the mature retina that have been widely reported in the literature. However, less attention has been paid to their role in phagocytosis of cell debris under physiological, pathological or experimental conditions. Müller glia have been shown to phagocytose apoptotic cell bodies originated during development of the visual system. They also engulf foreign molecules that are injected into the eye, cone outer segments and injured photoreceptors...
July 10, 2017: Journal of Anatomy
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