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https://www.readbyqxmd.com/read/28548559/the-yucatan-minipig-tmj-disc-structure-function-relationships-support-its-suitability-for-human-comparative-studies
#1
Natalia Vapniarsky, Ashkan Aryaei, Boaz Arzi, Jerry C Hu, David C Hatcher, Kyriacos A Athanasiou
Frequent involvement of the disc in temporomandibular joint (TMJ) disorders warrants attempts to tissue engineer TMJ disc replacements. Physiologically, a great degree of similarity is seen between humans and farm pigs (FPs), but the pig's rapid growth confers a significant challenge for in vivo experiments. Minipigs have a slower growth rate and are smaller than FPs, but minipig TMJ discs have yet to be fully characterized. The objective of this study was to determine the suitability of the minipig for TMJ studies by extensive structural and functional characterization...
May 26, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28547776/anatomical-relationship-of-maxillary-posterior-teeth-with-the-sinus-floor-and-buccal-cortex
#2
J K Jang, S W Kwak, J H Ha, H C Kim
This study aimed to evaluate the possibility of root fenestration or oroantral communication by evaluating the distance from root apex to the sinus floor and buccal cortex in maxillary posterior teeth by using cone-beam computed tomography (CBCT) images. The study included 2,182 roots of the maxillary posterior teeth from 219 patients after reviewing CBCT images of 462 patients according to the location of roots by two endodontists. The distances from each root apex to the maxillary sinus floor and buccal and palatal cortices were evaluated according to sex and age, and the mean values were compared by one-way analysis of variance and Mann-Whitney U test...
May 26, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28543060/nogo-b-is-the-major-form-of-nogo-at-the-floor-plate-and-likely-mediates-crossing-of-commissural-axons-in-the-mouse-spinal-cord
#3
Liqing Wang, Chao Yu, Jun Wang, Peggy Leung, Ding Ma, Hui Zhao, Jeremy S H Taylor, Sun-On Chan
Using Nogo antibodies with defined binding specificity, Nogo-B, but not Nogo-A, was localized on radial glia in the floor plate of mouse embryos. The presence of Nogo-B was confirmed in Nogo-A knockout mice. In explant cultures of embryonic day (E) 11 and E12 spinal cord, blocking of NgR function with antagonist peptide NEP1-40 reduced the crossing of newly arrived commissural axons, resulting in an accumulation of growth cones in the floor plate. Analysis of growth cone morphology demonstrated an increase in size of growth cones in the floor plate after peptide treatment, which was not detected in axons growing towards the midline...
May 22, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28542922/study-of-retinal-neurodegeneration-and-maculopathy-in-diabetic-meriones-shawi-a-particular-animal-model-with-human-like-macula
#4
Imane Hammoum, Maha Benlarbi, Ahmed Dellaa, Klaudia Szabó, Bulcsú Dékány, Dávid Csaba, Zsuzsanna Almási, Rozina I Hajdú, Rached Azaiz, Ridha Charefeddine, Ákos Lukáts, Rafika Benchouacha-Chekir
The purpose of this work was to evaluate a potentially useful animal model, Meriones shawi (M.sh) - developing metabolic X syndrome, diabetes and possessing a visual streak similar to human macula - in the study of diabetic retinopathy and diabetic macular edema (DME). Type 2 diabetes (T2D) was induced by high fat diet administration in M.sh. Body weights, blood glucose levels were monitored throughout the study. Diabetic retinal histopathology was evaluated 3 and 7 months after diabetes induction. Retinal thickness was measured, retinal cell types were labeled by immunohistochemistry and the number of stained elements were quantified...
May 20, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28541266/retinochoroidal-anastomosis-associated-with-enhanced-s-cone-syndrome
#5
Jennyfer Zerbib, Rocio Blanco Garavito, Sylvie Gerber, Hassiba Oubraham, Anne Sikorav, Isabelle Audo, Josseline Kaplan, Jean-Michel Rozet, Eric H Souied
PURPOSE: To describe the phenotype and genotype of a 10-year-old boy affected with enhanced S-cone syndrome associated with neovascularization. METHODS: Fundus autofluorescence, fluorescein angiography, indocyanine green angiography, spectral domain optical coherence tomography, full-field electroretinogram and NR2E3 molecular testing were performed. RESULTS: Best-corrected visual acuity was measured as 20/32, right eye and 20/20, left eye...
May 22, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28538723/genomic-epidemiology-reveals-multiple-introductions-of-zika-virus-into-the-united-states
#6
Nathan D Grubaugh, Jason T Ladner, Moritz U G Kraemer, Gytis Dudas, Amanda L Tan, Karthik Gangavarapu, Michael R Wiley, Stephen White, Julien Thézé, Diogo M Magnani, Karla Prieto, Daniel Reyes, Andrea M Bingham, Lauren M Paul, Refugio Robles-Sikisaka, Glenn Oliveira, Darryl Pronty, Carolyn M Barcellona, Hayden C Metsky, Mary Lynn Baniecki, Kayla G Barnes, Bridget Chak, Catherine A Freije, Adrianne Gladden-Young, Andreas Gnirke, Cynthia Luo, Bronwyn MacInnis, Christian B Matranga, Daniel J Park, James Qu, Stephen F Schaffner, Christopher Tomkins-Tinch, Kendra L West, Sarah M Winnicki, Shirlee Wohl, Nathan L Yozwiak, Joshua Quick, Joseph R Fauver, Kamran Khan, Shannon E Brent, Robert C Reiner, Paola N Lichtenberger, Michael J Ricciardi, Varian K Bailey, David I Watkins, Marshall R Cone, Edgar W Kopp, Kelly N Hogan, Andrew C Cannons, Reynald Jean, Andrew J Monaghan, Robert F Garry, Nicholas J Loman, Nuno R Faria, Mario C Porcelli, Chalmers Vasquez, Elyse R Nagle, Derek A T Cummings, Danielle Stanek, Andrew Rambaut, Mariano Sanchez-Lockhart, Pardis C Sabeti, Leah D Gillis, Scott F Michael, Trevor Bedford, Oliver G Pybus, Sharon Isern, Gustavo Palacios, Kristian G Andersen
Zika virus (ZIKV) is causing an unprecedented epidemic linked to severe congenital abnormalities. In July 2016, mosquito-borne ZIKV transmission was reported in the continental United States; since then, hundreds of locally acquired infections have been reported in Florida. To gain insights into the timing, source, and likely route(s) of ZIKV introduction, we tracked the virus from its first detection in Florida by sequencing ZIKV genomes from infected patients and Aedes aegypti mosquitoes. We show that at least 4 introductions, but potentially as many as 40, contributed to the outbreak in Florida and that local transmission is likely to have started in the spring of 2016-several months before its initial detection...
May 24, 2017: Nature
https://www.readbyqxmd.com/read/28535429/high-speed-video-analysis-of-forward-and-backward-spattered-blood-droplets
#7
P M Comiskey, A L Yarin, D Attinger
High-speed videos of blood spatter due to a gunshot taken by the Ames Laboratory Midwest Forensics Resource Center (MFRC) [1] are analyzed. The videos used in this analysis were focused on a variety of targets hit by a bullet which caused either forward, backward, or both types of blood spatter. The analysis process utilized particle image velocimetry (PIV) and particle analysis software to measure drop velocities as well as the distributions of the number of droplets and their respective side view area. The results of this analysis revealed that the maximal velocity in the forward spatter can be about 47±5m/s and for the backward spatter - about 24±8m/s...
May 1, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28533828/evaluation-of-preference-and-purpose-of-utilisation-of-cone-beam-computed-tomography-cbct-compared-to-orthopantomogram-opg-by-dental-practitioners-a-cross-sectional-study
#8
Komali Garlapati, D B Gandhi Babu, Nallan C S K Chaitanya, Harika Guduru, Anusha Rembers, Pratima Soni
BACKGROUND: Cone beam computed tomography (CBCT) has become a reliable adjunctive tool for both diagnosis and treatment planning in the field of dentistry. There are numerous advantages of CBCT over 2D imaging techniques (OPG). There is a need to evaluate the changing trend of preference and purpose of utilisation of these imaging modalities by dental practitioners. This study was carried out to evaluate and compare the purpose and preference of utilisation of CBCT and OPG by various dental practitioners in their clinical practice...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28531236/psychosine-enhances-the-shedding-of-membrane-microvesicles-implications-in-demyelination-in-krabbe-s-disease
#9
Ludovic D'Auria, Cory Reiter, Emma Ward, Ana Lis Moyano, Michael S Marshall, Duc Nguyen, Giuseppe Scesa, Zane Hauck, Richard van Breemen, Maria I Givogri, Ernesto R Bongarzone
In prior studies, our laboratory showed that psychosine accumulates and disrupts lipid rafts in brain membranes of Krabbe's disease. A model of lipid raft disruption helped explaining psychosine's effects on several signaling pathways important for oligodendrocyte survival and differentiation but provided more limited insight in how this sphingolipid caused demyelination. Here, we have studied how this cationic inverted coned lipid affects the fluidity, stability and structure of myelin and plasma membranes...
2017: PloS One
https://www.readbyqxmd.com/read/28526551/assessment-of-vertical-ridge-augmentation-in-anterior-aesthetic-zone-using-onlay-xenografts-with-titanium-mesh-versus-the-inlay-bone-grafting-technique-a-randomized-clinical-trial
#10
M Mounir, S Mounir, A A Elfetouh, M A Shaker
The aim of this study was to evaluate the final vertical gain at the deficient anterior maxillary alveolar ridges using onlay bone grafts with titanium mesh versus inlay bone grafting. This was a single institutional randomized comparative clinical trial. The study population included 16 patients, with edentulous anterior maxillary alveolar ridges (40 implant sites) who were presented and treated at the Faculty of Oral and Dental Medicine in Cairo University from September 2013 to August 2015. Selected patients were randomly divided into two equal groups...
May 16, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28517113/differences-between-two-strains-of-ceriporiopsis-subvermispora-on-improving-the-nutritive-value-of-wheat-straw-for-ruminants
#11
Nazri Nayan, Anton S M Sonnenberg, Wouter H Hendriks, John W Cone
AIM: The present study evaluated differences between two strains of Ceriporiopsis subvermispora on improving the nutritive value and in vitro degradability of wheat straw. METHODS AND RESULTS: Wheat straw was treated with the fungi for 7 weeks. Weekly samples were analyzed for ergosterol content, in vitro gas production (IVGP), chemical composition and lignin degrading enzyme activity. Ergosterol data showed CS1 to have a faster initial growth than CS2 and reaching a stationary phase after 3 weeks...
May 18, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28516000/role-of-a-dual-splicing-and-amino-acid-code-in-myopia-cone-dysfunction-and-cone-dystrophy-associated-with-l-m-opsin-interchange-mutations
#12
Scott H Greenwald, James A Kuchenbecker, Jessica S Rowlan, Jay Neitz, Maureen Neitz
PURPOSE: Human long (L) and middle (M) wavelength cone opsin genes are highly variable due to intermixing. Two L/M cone opsin interchange mutants, designated LIAVA and LVAVA, are associated with clinical diagnoses, including red-green color vision deficiency, blue cone monochromacy, cone degeneration, myopia, and Bornholm Eye Disease. Because the protein and splicing codes are carried by the same nucleotides, intermixing L and M genes can cause disease by affecting protein structure and splicing...
May 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28514364/-radiodiagnostics-of-odontogenic-maxillary-sinusitis
#13
N S Serova, E V Evseeva
The objective of the present study was to analyze the potential of such techniques as X-ray, multi-slice computed tomography (MSCT), and cone-beam computed tomography (CBCT) for diagnostics of odontogenic maxillary sinusitis. The secondary objective was to describe changes in maxillary sinuses identifiable with the help of the above methods. The study included 166 patients at the age varying from 21 to 81 years presenting with odontogenic maxillary sinusitis. All of them underwent the roentgenological examination...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/28514342/-evaluation-of-main-and-additional-root-canal-curvature-in-maxillary-molars
#14
O A Levenets, V V Alyamovskiy, A A Levenets, S A Ovchinnikova
The aim of the study was to investigate the degree of the main and additional root canal curvatures of the maxillary molars in Krasnoyarsk population. Main and additional root canal curvature was measured in 48 maxillary first molars (M1) and 122 second molars (M2) with cone beam computer tomography. In total 476 measurements were taken for M1 and 1038 for M2 (all measurements were doubled in sagittal and coronal views). M2 showed more variety of root canal morphology and significantly higher proportion of additional root canals...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28511502/comparative-evaluation-of-three-herbal-solutions-on-the-disinfection-of-guttapercha-cones-an-in-vitro-study
#15
Pratap Kumar Mukka, Samba Shiva Rao Pola, Nanda Kumar Kommineni, Mayuri Sailaja Pachalla, Anand Ramtheerth Karne, Karthik Labishetty, Supriya Kommineni, Praveen Chilakabathini
INTRODUCTION: Guttapercha (GP) cones are usually supplied in aseptic, sealed packages from the manufacturers, but once exposed to the dental office environment or even by handling; they can be contaminated by a number of microorganisms. Supplementary decontamination of GP cones is critical. As they cannot be sterilized by moist or dry heat, cold sterilization, using disinfectants should be used. AIM: The aim of the study was to evaluate rapid, reliable, convenient and effective method of disinfection of GP cones using readily available herbal solutions such as Aloevera Juice, Amla Juice and Pancha Tulsi...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28510626/outcome-measures-for-clinical-trials-of-leber-congenital-amaurosis-caused-by-the-intronic-mutation-in-the-cep290-gene
#16
Samuel G Jacobson, Artur V Cideciyan, Alexander Sumaroka, Alejandro J Roman, Jason Charng, Monica Lu, Windy Choi, Rebecca Sheplock, Malgorzata Swider, Mychajlo S Kosyk, Sharon B Schwartz, Edwin M Stone, Gerald A Fishman
Purpose: To determine efficacy outcome measures for clinical trials of Leber congenital amaurosis (LCA) associated with a common intronic mutation in the CEP290 gene. Methods: CEP290-LCA patients (ages 5-48) with the intronic mutation (c.2991+1655A>G) were studied as a retrospective observational case series using clinical methods and with full-field sensitivity testing (FST), optical coherence tomography (OCT), autofluorescence imaging (NIR-RAFI), transient pupillary light reflex (TPLR), oculomotor control and instability (OCI), a mobility course, and a questionnaire (NEI-VFQ)...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28506260/atypical-retinal-pigment-epithelial-defects-with-retained-photoreceptor-layers-a-so-far-disregarded-finding-in-age-related-macular-degeneration
#17
Helena Giannakaki-Zimmermann, Giuseppe Querques, Inger Christine Munch, Daraius Shroff, David Sarraf, Xuejing Chen, Eduardo Cunha-Souza, Sarah Mrejen, Vittorio Capuano, Murilo W Rodrigues, Charu Gupta, Andreas Ebneter, Martin S Zinkernagel, Marion R Munk
BACKGROUND: To report patients with age-related macular degeneration and atypical central retinal pigment epithelium (RPE) defects not attributable to geographic atrophy (GA) or RPE-tears with overlying preserved photoreceptor layers. METHODS: Multimodal imaging case-series evaluating the course of atypical RPE- defects in patients with AMD using Color fundus images, Optical coherence tomography (OCT), OCT-Angiography, fundus autofluorescence (FAF) and fluorescein-angiography (FA)...
May 15, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28500790/accuracy-evaluation-of-a-six-degree-of-freedom-couch-using-conebeam-ct-and-isocal-phantom-with-an-in-house-algorithm
#18
Qinghui Zhang, Joseph Driewer, Shuo Wang, Sicong Li, Xiaofeng Zhu, Dandan Zheng, Yijian Cao, Jiaju Zhang, Abolghassem Jamshidi, Brett W Cox, Jonathan P S Knisely, Louis Potters, Eric E Klein
PURPOSE: The accuracy of a Six Degree of Freedom (6DoF) couch was evaluated using a novel method. METHODS: Cone beam CT (CBCT) images of a 3D phantom (IsoCal) were acquired with different, known combinations of couch pitch and roll angles. Pitch and roll angles between the maximum allowable values of 357 and 3 degrees were tested in one degree increments. A total of 49 combinations were tested at zero degrees of yaw (couch rotation angle). The 3D positions of 16 tungsten carbide BBs, each 4 mm in diameter and arranged in a known geometry within the IsoCal phantom, were determined in the 49 image sets with in-house software...
May 13, 2017: Medical Physics
https://www.readbyqxmd.com/read/28499507/nasolabial-changes-after-two-different-approaches-for-surgically-assisted-rapid-maxillary-expansion
#19
N Alves, T F M Oliveira, V A Pereira-Filho, E S Gonçales, M A C Gabrielli, L A Passeri
This retrospective study evaluated the nasolabial changes in patients who underwent surgically assisted rapid maxillary expansion (SARME) using two different approaches. Nineteen patients were included in the study, divided into two groups according to the kind of surgical approach performed: group 1 (n=9), SARME performed through the standard Le Fort I circumvestibular approach followed by the alar base cinch, and group 2 (n=10), SARME performed through a subtotal vestibular approach associated to a V-shaped incision at the maxillary midline in the labial frenulum region, without alar base cinch...
May 9, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28498612/design-of-a-modulated-orthovoltage-stereotactic-radiosurgery-system
#20
Jessica M Fagerstrom, Edward T Bender, Michael J Lawless, Wesley S Culberson
PURPOSE: To achieve stereotactic radiosurgery (SRS) dose distributions with sharp gradients using orthovoltage energy fluence modulation with inverse planning optimization techniques. METHODS: A pencil beam model was used to calculate dose distributions from an orthovoltage unit at 250 kVp. Kernels for the model were derived using Monte Carlo methods. A Genetic Algorithm search heuristic was used to optimize the spatial distribution of added tungsten filtration to achieve dose distributions with sharp dose gradients...
May 12, 2017: Medical Physics
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