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https://www.readbyqxmd.com/read/29750624/evaluation-of-the-effect-of-different-root-canal-preparation-techniques-in-primary-teeth-using-cbct
#1
Shahid M Shaikh, Mousumi Goswami
OBJECTIVES: The purpose of this in vitro study was to compare and evaluate the cleaning and shaping efficiency of the rotary Ni-Ti, sonic and conventional file systems for root canal preparation in primary teeth under CBCT. STUDY DESIGN: Seventy five maxillary and mandibular first and second primary molars were divided into three groups of 25 teeth each, according to the canal preparation technique: Group I Rotary file system, Group II Sonic file system, Group III Conventional K files...
May 11, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29738006/the-effect-of-varying-cone-beam-computed-tomography-image-resolution-and-field-of-view-centralization-on-effective-radiation-dose
#2
Fatima M Jadu, Asmaa A Alzahrani, Maha A Almutairi, Salma O Al-Amoudi, Ahmed M Jan, Mawya A Khafaji
To investigate changes in the effective radiation dose (E) in relation to variations in voxel (VOX) size settings and the field-of-view (FOV) centralization. Methods: This cross-sectional dosimetry study used nanoDot OSLD dosimeters placed at 25 pre-determined sites in the head and neck slices of a RANDO male phantom to measure the absorbed radiation. The imaging scans took place at King Abdulaziz University Dental Hospital, Jeddah, Saudi Arabia between September 2016 and May 2017 using the i-CAT classic cone beam computed tomography (CBCT)  unit...
May 2018: Saudi Medical Journal
https://www.readbyqxmd.com/read/29730825/-18-f-f13640-preclinical-evaluation-in-rodent-cat-and-primate-as-a-5-ht-1a-receptor-agonist-for-pet-neuroimaging
#3
Benjamin Vidal, Sylvain Fieux, Matthieu Colom, Thierry Billard, Caroline Bouillot, Olivier Barret, Cristian Constantinescu, Gilles Tamagnan, Adrian Newman-Tancredi, Luc Zimmer
Serotonin 1A receptors are known to play an important role in many psychiatric and neurodegenerative disorders. Currently, all available 5-HT1A receptor PET radiopharmaceuticals that are radiolabeled with fluorine-18 are antagonists. As agonists bind preferentially to the high-affinity state of receptors, it would be of great interest to develop agonist radioligands which could provide a measure of the functional 5-HT1A receptors in pathophysiological processes. The 5-HT1A receptor agonist candidates we recently proposed had promising in vitro properties but were not optimal in terms of PET imaging...
May 5, 2018: Brain Structure & Function
https://www.readbyqxmd.com/read/29722112/the-development-of-central-venous-thrombosis-in-hemodialyzed-patients-is-associated-with-catheter-tip-depth-and-localization
#4
Vedran Premuzic, Drazen Perkov, Ranko Smiljanic
INTRODUCTION: The aim of our work was to analyze the incidence of tunneled hemodialysis catheters-related thrombosis in hemodialyzed patients depending on catheter tip depth and position and to evaluate the impact of other established risk factors responsible for development of central venous thrombosis. METHODS: The presence of central vein thrombosis, location, and the depth of the catheter tip was reviewed by two experienced radiologists. All patients with suspected central venous thrombosis had factor V Leiden, lupus anticoagulant, and cardiolipin antibodies checked (acIgM and acIgG) and were evaluated with cat-scan venography...
May 2, 2018: Hemodialysis International
https://www.readbyqxmd.com/read/29717103/angina-pectoris-in-young-male-due-to-agenesis-of-left-circumflex-artery
#5
Thomas J Guterbaum, Kristian A Øvrehus, Karsten T Veien, Jacob E Møller, Hans Mickley
BACKGROUND This case study demonstrated that although highly symptomatic, agenesis of the left circumflex artery was a benign finding. Anomalies of the coronary arteries were found to be the cause of sudden death in a young individual. Left circumflex anomalies were not associated with major cardiac events. CASE REPORT A 20-year-old male was admitted due to syncope preceded by chest pain. His electrocardiogram (ECG) showed global ST segment elevation as well as biphasic T waves in anterior precordial leads...
May 2, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29708634/a-case-report-of-dermanyssus-gallinae-infestation-in-three-cats
#6
Antonella Di Palma, Federico Leone, Francesco Albanese, Massimo Beccati
BACKGROUND: Dermanyssus gallinae is a major threat for the poultry industry; these mites also feed on the blood of many other birds, small mammals and potentially humans. HYPOTHESIS/OBJECTIVES: Three cats with dermatitis attributed to D. gallinae infestation. ANIMALS: Two 40-day-old kittens, living in a rural area, and one 7-year-old female indoor cat, were presented with a pruritic skin condition. METHODS: Mite specimens were collected from the cats and examined by light and scanning electron microscopy...
April 30, 2018: Veterinary Dermatology
https://www.readbyqxmd.com/read/29706873/inflammation-and-tissue-remodeling-in-the-bladder-and-urethra-in-feline-interstitial-cystitis
#7
F Aura Kullmann, Bronagh M McDonnell, Amanda S Wolf-Johnston, Andrew M Lynn, Samuel E Getchell, Wily G Ruiz, Irina V Zabbarova, Youko Ikeda, Anthony J Kanai, James R Roppolo, Sheldon I Bastacky, Gerard Apodaca, C A Tony Buffington, Lori A Birder
Interstitial cystitis/bladder pain syndrome (IC/BPS) is a debilitating chronic disease of unknown etiology. A naturally occurring disease termed feline interstitial cystitis (FIC) reproduces many features of IC/BPS patients. To gain insights into mechanisms underlying IC/BPS, we investigated pathological changes in the lamina propria (LP) of the bladder and proximal urethra in cats with FIC, using histological and molecular methods. Compared to control cat tissue, we found an increased number of de-granulated mast cells, accumulation of leukocytes, increased cyclooxygenase (COX)-1 expression in the bladder LP, and increased COX-2 expression in the urethra LP from cats with FIC...
2018: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/29704849/simultaneous-suppression-of-acid-mine-drainage-formation-and-arsenic-release-by-carrier-microencapsulation-using-aluminum-catecholate-complexes
#8
Ilhwan Park, Carlito Baltazar Tabelin, Kensuke Seno, Sanghee Jeon, Mayumi Ito, Naoki Hiroyoshi
Pyrite (FeS2 ), the most common sulfide mineral in nature, plays an important role in the formation of acid mine drainage (AMD), one of the most serious environmental problems after the closure of mines and mineral processing operations. Likewise, arsenopyrite (FeAsS) is an important sulfide mineral because its dissolution releases toxic arsenic (As) into the environment. To mitigate the serious environmental problems caused by pyrite and arsenopyrite, this study investigated carrier-microencapsulation (CME) using Al-catecholate complexes, a technique that selectively forms protective coatings on the surfaces of sulfide minerals, by electrochemical techniques and batch leaching experiments coupled with surface sensitive characterization techniques...
April 16, 2018: Chemosphere
https://www.readbyqxmd.com/read/29651282/effect-of-cinnamaldehyde-and-citral-combination-on-transcriptional-profile-growth-oxidative-damage-and-patulin-biosynthesis-of-penicillium-expansum
#9
Yuan Wang, Kewei Feng, Haihua Yang, Zhiwei Zhang, Yahong Yuan, Tianli Yue
Penicillium expansum , as a main postharvest pathogen of fruits, can secrete patulin (PAT), causing fruit decay and health problems. In this study, the antifungal test, SEM (scanning electron microscope) observation, transcriptional profile, PAT biosynthesis, and physiological characters of P. expansum exposed to cinnamaldehyde and citral combination (Cin/Cit) were evaluated. Cin/Cit could inhibit the mycelial growth and spore germination of P. expansum in a dose-dependent manner. Besides, Cin/Cit caused spores and mycelia wrinkled and depressed by SEM observation...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29595359/feline-hyperaesthesia-syndrome-with-self-trauma-to-the-tail-retrospective-study-of-seven-cases-and-proposal-for-integrated-multidisciplinary-diagnostic-approach
#10
Pablo Amengual Batle, Clare Rusbridge, Tim Nuttall, Sarah Heath, Katia Marioni-Henry
Case series summary This was a retrospective study on the clinical features and response to treatment in seven cats with feline hyperaesthesia syndrome (FHS) and tail mutilation. FHS is a poorly understood disorder characterised by skin rippling over the dorsal lumbar area, episodes of jumping and running, excessive vocalisation, and tail chasing and self-trauma. The majority of the cats were young, with a median age of 1 year at the onset of clinical signs, male (n = 6) and with access to the outdoors (n = 5)...
March 1, 2018: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/29540522/olfaction-written-in-bone-cribriform-plate-size-parallels-olfactory-receptor-gene-repertoires-in-mammalia
#11
Deborah J Bird, William J Murphy, Lester Fox-Rosales, Iman Hamid, Robert A Eagle, Blaire Van Valkenburgh
The evolution of mammalian olfaction is manifested in a remarkable diversity of gene repertoires, neuroanatomy and skull morphology across living species. Olfactory receptor genes (ORGs), which initiate the conversion of odorant molecules into odour perceptions and help an animal resolve the olfactory world, range in number from a mere handful to several thousand genes across species. Within the snout, each of these ORGs is exclusively expressed by a discrete population of olfactory sensory neurons (OSNs), suggesting that newly evolved ORGs may be coupled with new OSN populations in the nasal epithelium...
March 14, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29530511/virtual-simulation-of-an-osseointegrated-trans-humeral-prosthesis-a-falling-scenario
#12
A I Mirulla, L Bragonzoni, S Zaffagnini, M Bontempi, V Nigrelli, T Ingrassia
INTRODUCTION: Traditional prosthetic solutions expose the amputee to numerous problems that limit his ability to safely perform the normal activities of daily life. In order to eliminate the problems related to the use of the traditional prosthesis with socket, a new technique was developed for fixing the prosthesis to the amputees based on the principle of osseointegration. The aim of this paper is to study and analyze the stress distribution on the interface between a trans-humeral osseointegrated prosthetic implant and the residual bone, identifying the most stressed areas and thus foreseeing possible failure phenomena of the entire prosthetic system and, after, to compare the stress distribution on three different prosthetic designs that differ from each other for some geometric characteristics...
April 2018: Injury
https://www.readbyqxmd.com/read/29486398/laparoscopic-treatment-in-type-iv-giant-paraesophagic-hernia-and-intestinal-occlusion-a-case-report
#13
Marco Aurelio Rendón-Medina, Rodolfo Omar Ávalos-Abreu, Jocelyn Saucedo-Saldivar, Erick Sánchez-Tellez, Marco Garcia-Puig
INTRODUCTION: A Giant Hiatal Paraesophageal Hernia (GPEH) is a Hiatal Hernia (HH) that includes more than 30% of the stomach in the thorax. The gold standard form of repair today is the laparoscopic abdominal approach in elective scenarios. Laparoscopic HH repair advantages include, less postoperative pain, small incisions, reduced postoperative respiratory complications are reduced, shorter hospital stay. The objective of this paper is to describe a patient undergoing with upper intestinal obstruction and a GPEH Type IV, approached laparoscopically...
2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29458270/the-involvement-of-nrf2-antioxidant-signaling-pathway-in-the-protection-of-monocrotaline-induced-hepatic-sinusoidal-obstruction-syndrome-in-rats-by-catechin-hydrate
#14
Xiaoqi Jing, Jiaqi Zhang, Zhenlin Huang, Yuchen Sheng, Lili Ji
Hepatic sinusoidal obstruction syndrome (HSOS) is a rare and life-threatening liver disease. (+)-catechin is a natural dietary flavonol with high antioxidant capacity. This study aims to investigate the involvement of nuclear factor erythroid 2-related factor 2 (Nrf2) antioxidant signaling pathway in the protection of (+)-catechin hydrate (CAT) against monocrotaline (MCT)-induced HSOS. Results of serum alanine/aspartate aminotransferases (ALT/AST) activities, total bilirubin (TBil) and bile acids (TBA) amounts, liver histological observation, scanning electron microscope evaluation and hepatic metalloproteinase-9 (MMP-9) expression all demonstrated the protection of CAT against MCT-induced HSOS in rats...
February 20, 2018: Free Radical Research
https://www.readbyqxmd.com/read/29399138/lymphadenitis-associated-with-cat-scratch-disease-simulating-a-neoplasm-imaging-findings-with-histopathological-associations
#15
Ying Chen, Yan-Biao Fu, Xiu-Fang Xu, Yao Pan, Chen-Ying Lu, Xiu-Liang Zhu, Qing-Hai Li, Ri-Sheng Yu
The lymphadenitis associated with cat-scratch disease (CSD) is often confused with neoplasms by a number of radiologists and clinicians, and consequently, unnecessary invasive procedures or surgeries are performed. In the present study, the contrast-enhanced computed tomography (CT) and magnetic resonance imaging (MRI) findings of 10 patients (6 men and 4 women) with clinically and pathologically confirmed lymphadenitis associated with CSD were retrospectively analyzed (CT in 3 patients, MRI in 6 patients, and CT and MRI in 1 patient) at The Second Affiliated Hospital of Zhejiang University School of Medicine (Hangzhou, China) between January 2007 and November 2014...
January 2018: Oncology Letters
https://www.readbyqxmd.com/read/29344915/mechanistic-investigation-of-visible-light-driven-photocatalytic-inactivation-of-e-coli-by-ag-agcl-znfe2o4
#16
Akhanda Raj Upreti, Nirina Khadgi, Yi Li
In this study, photocatalytic inactivation of Escherichia coli was investigated over magnetic nanocomposite Ag-AgCl/ZnFe2O4. The nanocomposite demonstrated efficient photocatalytic activity by complete inactivation of the bacteria within 60 min of visible light irradiation. The anions HPO42- and SO42- were found to play the most important role in the inhibition of photocatalytic inactivation of E. coli. A systematic investigation of mechanism of photocatalytic bacterial inactivation was carried out based on cell membrane injury test, scanning electron microscopy (SEM) of bacterial morphology changes, Fourier transform infrared (FTIR) spectroscopy of E...
January 17, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29299755/immobilization-of-recombinant-human-catalase-on-gold-and-silver-nanoparticles
#17
Agnieszka Małgorzata Pudlarz, Ewa Czechowska, Katarzyna Ranoszek-Soliwoda, Emilia Tomaszewska, Grzegorz Celichowski, Jarosław Grobelny, Janusz Szemraj
Human catalase cDNA was cloned into a pEX-C-His vector. Purified recombinant catalase was immobilized on nanoparticles. Gold and silver nanoparticles were synthesized in a variety of sizes by chemical reduction; no agglomerates or aggregates were observed in any of the colloids during dynamic light scattering or scanning transmission electron microscopy analysis. After immobilization on gold nanoparticles, recombinant catalase activity was found to be lower than that of the same amount of enzyme in aqueous solution...
January 3, 2018: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/29297561/surgeons-performance-determining-the-amount-of-graft-material-for-sinus-floor-augmentation-using-tomography
#18
Adriana Dibo Cruz, Guilherme Alvares Peixoto, Marcelo Freitas Aguiar, Gabriela Alessandra Cruz Galhardo Camargo, Nicolas Homs
This study aimed to assess the performance of surgeons in determining the amount of graft material required for maxillary sinus floor augmentation in a preoperative analysis using cone-beam computed tomography images. A convenience sample of 10 retrospective CBCT exams (i-CAT®) was selected. Scans of the posterior maxilla area with an absence of at least one tooth and residual alveolar bone with an up to 5 mm height were used. Templates (n=20) contained images of representative cross-sections in multiplanar view...
May 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29283251/ferroelastic-phase-transition-and-switchable-dielectric-constant-in-heterometallic-niccolite-formate-frameworks
#19
Kai Wang, Jian-Bo Xiong, Bin Xia, Qing-Lun Wang, Yu-Zhang Tong, Yue Ma, Xian-He Bu
Four heterometallic formate frameworks templated by various alkylamine cations with the general formula [cat][GaIII MnII (HCOO)6 ] {cat is MA (CH3 NH3 + ) for 1, DMA [(CH3 )2 NH2 + ] for 2, EtA (CH3 CH2 NH3 + ) for 3, and DEtA [(CH3 CH2 )2 NH2 + ] for 4} have been prepared and characterized by X-ray diffraction, differential scanning calorimetry, and dielectric studies. All of the complexes have niccolite-like structures, which possess the same [GaMn(HCOO)6 ]- anionic framework with binodal (412 ·63 )(49 ·66 ) topology; only the counterions in the cavity are different...
January 16, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29242311/simple-technique-for-aiding-thoracic-ct-scanning-of-cats-without-general-anaesthesia
#20
Chung-Hui Lin, Pei-Ying Lo
No abstract text is available yet for this article.
December 14, 2017: Veterinary Record
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