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https://www.readbyqxmd.com/read/29773714/the-bendy-basilar-progressive-aneurysm-tilting-and-arterial-deformation-can-be-a-delayed-outcome-after-coiling-of-large-basilar-apex-aneurysms
#1
Ansaar T Rai, Abdul R Tarabishy, SoHyun Boo, Jeffrey S Carpenter, Sanjay Bhattia
BACKGROUND: Morphological changes in the basilar artery and the artery-aneurysm relationship following coiling of large basilar apex aneurysms may induce morbidity. METHODS: The basilar artery radius-of-curvature was measured along its center line on volumetrically reconstructed images formatted along the plane of curvature. The aneurysm-tilt-angle was measured between the distal basilar and the vertical long axis of the aneurysm. The measurements were compared between small (<10 mm) and large (≥10 mm) aneurysms on baseline and follow-up studies...
May 17, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29771886/-effects-of-artificial-tears-on-ocular-surface-in-glaucomatous-patients-with-long-term-instillation-of-preserved-antiglaucoma-eye-drops
#2
N V Makashova, A E Vasilieva, O Yu Kolosova
PURPOSE: To study the effects of long-term instillation of 0.18% sodium hyaluronate artificial tears VISMED multi on ocular surface in glaucomatous patients with long-term instillation of preserved anti-glaucoma drops. MATERIAL AND METHODS: The study included 79 patients (40 female and 39 male; 79 eyes in total) with primary open-angle glaucoma (POAG) divided into 3 groups according to disease stage: mild or early (stage I) glaucoma - 15 patients (15 eyes), moderate (stage II) glaucoma - 30 patients (30 eyes), advanced or severe (stage III) glaucoma - 34 patients (34 eyes)...
2018: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/29766672/ribcage-deformity-and-the-altered-breathing-pattern-in-children-with-osteogenesis-imperfecta
#3
Antonella LoMauro, Paolo Fraschini, Simona Pochintesta, Marianna Romei, Maria G D'Angelo, Andrea Aliverti
AIM: Osteogenesis Imperfecta (OI) is a genetic disease characterized by bones fragility and progressive deformity. Life expectancy is reduced in the non-lethal most severe type III form before the age of 10 years. The main cause of death in OI is respiratory insufficiency resulting from impaired thoracic function worsened by ribcage deformity and scoliosis. METHODS: We used opto-electronic plethysmography to study chest geometry, the ventilatory, and the thoraco-abdominal pattern at rest in supine position in children younger than 10 years...
May 15, 2018: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29763814/inter-segment-foot-motion-in-girls-using-a-three-dimensional-multi-segment-foot-model
#4
Woo Young Jang, Dong Yeon Lee, Hae Woon Jung, Doo Jae Lee, Won Joon Yoo, In Ho Choi
BACKGROUND: Several multi-segment foot models (MFMs) have been introduced for in vivo analyses of dynamic foot kinematics. However, the normal gait patterns of healthy children and adolescents remain uncharacterized. We sought to determine normal foot kinematics according to age in clinically normal female children and adolescents using a Foot 3D model. METHODS: Fifty-eight girls (age 7-17 years) with normal function and without radiographic abnormalities were tested...
May 6, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29762712/revealing-the-distinct-folding-phases-of-an-rna-three-helix-junction
#5
Alex Plumridge, Andrea M Katz, George D Calvey, Ron Elber, Serdal Kirmizialtin, Lois Pollack
Remarkable new insight has emerged into the biological role of RNA in cells. RNA folding and dynamics enable many of these newly discovered functions, calling for an understanding of RNA self-assembly and conformational dynamics. Because RNAs pass through multiple structures as they fold, an ensemble perspective is required to visualize the flow through fleetingly populated sets of states. Here, we combine microfluidic mixing technology and small angle X-ray scattering (SAXS) to measure the Mg-induced folding of a small RNA domain, the tP5abc three helix junction...
May 14, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29762338/incidence-and-risk-factors-for-instrumentation-related-complications-after-scoliosis-surgery-in-pediatric-patients-with-nf-1
#6
Ziming Yao, Hao Li, Xuejun Zhang, Chengxin Li, Xinyu Qi
STUDY DESIGN: Retrospective cohort study. OBJECTIVE: To assess the incidence and risk factors of instrumentation-related complication (IRC) in pediatric patients surgically treated for neurofibromatosis type 1 (NF-1) dystrophic scoliosis. SUMMARY OF BACKGROUND DATA: Surgical management including growing rods technique and early definitive fusion has been recommended to avoid progression of NF-1 scoliosis. However, no study has yet investigated the incidence and risk factors of IRC in these surgical interventions...
May 14, 2018: Spine
https://www.readbyqxmd.com/read/29762326/temporal-progression-of-craniofacial-dysmorphology-in-unilateral-coronal-synostosis-a-mechanistic-hypothesis
#7
Kirun Baweja, Alexander H Sun, Rajendra Sawh-Martinez, John A Persing
AIM: This study chronicles skull base and face development in nonsyndromic unilateral coronal synostosis (UCS) during infancy, to characterize the mechanistic progression of facial dysmorphology. METHODS: Computed tomography scans from 51 subjects were reviewed (26 UCS, 25 controls) and data were reconstructed. Patients were stratified into 5 age groups. A series of measurements were taken from the reconstructions. RESULTS: All patients had a unilaterally fused coronal suture at the time of analysis...
May 14, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29762268/influence-of-removing-the-large-retinal-vessels-related-effect-on-peripapillary-vessel-density-progression-analysis-in-glaucoma
#8
Gábor Holló
PURPOSE: To investigate the usefulness of removing the large vessel-related information from peripapillary optical coherence tomography (OCT) angiography progression analysis. Peripapillary vessel density (VD) image series which had shown no progression with an earlier software version that did not separate capillary and large vessel-related effects were reevaluated for selective peripapillary capillary VD progression. METHODS: Prospective retinal nerve fiber layer thickness (RNFLT) and peripapillary VD measurements were made using the Angiovue/RTvue-XR OCT on one eye of 9 normal, 20 under treatment ocular hypertensive (OHT) and 24 under treatment open-angle glaucoma patients at 6-month intervals for 2 years (5 visits)...
May 12, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29761747/changes-in-hindfoot-alignment-after-high-or-low-tibial-osteotomy
#9
Jun Young Choi, Si Jung Song, Sung Jung Kim, Sang Hee Kim, Ji Soo Park, Jin Soo Suh
BACKGROUND: We aimed to determine the change in hindfoot alignment after high (HTO) or low tibial osteotomy (LTO), which is commonly performed to prevent the progression of arthritis of the knee or ankle. METHODS: We retrospectively reviewed the radiographic findings of patients who underwent HTO or LTO for arthritis with varus deformity of the knee or ankle joint. The hindfoot alignment view angle (HAVA), hindfoot alignment ratio (HAR), and hindfoot moment arm (HMA) were measured using the hindfoot alignment radiographs...
May 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29758539/bulk-and-dispersed-aqueous-behaviour-of-an-endogenous-lipid-selachyl-alcohol-effect-of-tween-80-and-pluronic-f127-on-nanostructure
#10
Mohammad Younus, Adrian Hawley, Ben J Boyd, Shakila B Rizwan
Tween 80 has been reported to provide a means of targeting drug nanocarriers to the blood- brain barrier. This study investigated the influence of addition of Tween 80 on the formation of different bulk and dispersed lyotropic liquid crystalline phases in selachyl alcohol-based systems. The effect of increasing concentrations of Tween 80 and Pluronic F127 (as a control) (0-25% w/w relative to SA) on the bulk phase behaviour and dispersions of selachyl alcohol (SA) were investigated using small angle X-ray scattering, dynamic light scattering, and cryogenic transmission electron microscopy...
May 7, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29756038/phase-behaviors-of-colloidal-analogs-of-bent-core-liquid-crystals
#11
Yang Yang, Hanwen Pei, Guangdong Chen, Kyle Thomas Webb, Luz J Martinez-Miranda, Isabel K Lloyd, Zhongyuan Lu, Kun Liu, Zhihong Nie
Bent-core liquid crystal (LC) molecules are known to form mesophases with fascinating polar order and supramolecular chirality despite the achiral nature of the mesogens. The assembly of colloidal particles with geometrical similarity to bent-core molecular mesogens not only provides new insights into the physical behaviors of atoms or molecules but also leads to new materials with broad applications. Despite tremendous progress in colloidal synthesis and assembly, there has been a lack of colloidal model systems of bent-core molecular mesogens for LC property discovery and application development...
May 2018: Science Advances
https://www.readbyqxmd.com/read/29751348/measuring-topographies-from-conventional-sem-acquisitions
#12
Qiwei Shi, Stéphane Roux, Félix Latourte, François Hild, Dominique Loisnard, Nicolas Brynaert
The present study extends the stereoscopic imaging principle for estimating the surface topography to two orientations, namely, normal to the electron beam axis and inclined at 70° as suited for EBSD analyses. In spite of the large angle difference, it is shown that the topography can be accurately determined using regularized global Digital Image Correlation. The surface topography is compared to another estimate issued from a 3D FIB-SEM procedure where the sample surface is first covered by a Pt layer, and its initial topography is progressively revealed from successive FIB-milling...
April 27, 2018: Ultramicroscopy
https://www.readbyqxmd.com/read/29751322/gait-deviations-in-duchenne-muscular-dystrophy-part-2-statistical-non-parametric-mapping-to-analyze-gait-deviations-in-children-with-duchenne-muscular-dystrophy
#13
Marije Goudriaan, Marleen Van den Hauwe, Cristina Simon-Martinez, Catherine Huenaerts, Guy Molenaers, Nathalie Goemans, Kaat Desloovere
BACKGROUND: Prolonged ambulation is considered important in children with Duchenne muscular dystrophy (DMD). However, previous studies analyzing DMD gait were sensitive to false positive outcomes, caused by uncorrected multiple comparisons, regional focus bias, and inter-component covariance bias. Also, while muscle weakness is often suggested to be the main cause for the altered gait pattern in DMD, this was never verified. RESEARCH QUESTION: Our research question was twofold: 1) are we able to confirm the sagittal kinematic and kinetic gait alterations described in a previous review with statistical non-parametric mapping (SnPM)? And 2) are these gait deviations related to lower limb weakness? METHODS: We compared gait kinematics and kinetics of 15 children with DMD and 15 typical developing (TD) children (5-17 years), with a two sample Hotelling's T2 test and post-hoc two-tailed, two-sample t-test...
April 30, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29750755/predicting-factors-at-skeletal-maturity-for-curve-progression-and-low-back-pain-in-adult-patients-treated-non-operatively-for-adolescent-idiopathic-scoliosis-with-thoracolumbar-lumbar-curves-a-mean-25-year-follow-up
#14
Masayuki Ohashi, Kei Watanabe, Toru Hirano, Kazuhiro Hasegawa, Keiichi Katsumi, Hirokazu Shoji, Mizouchi Tatsuki, Naoto Endo
STUDY DESIGN: A retrospective, long-term follow-up study. OBJECTIVE: We aimed to clarify the predicting factors at skeletal maturity for future curve progression and low back pain (LBP) in adolescent idiopathic scoliosis (AIS) with thoracolumbar/lumbar (TL/L) curve. SUMMARY OF BACKGROUND DATA: TL/L curves are likely to progress after skeletal maturity and cause LBP. METHODS: Of 147 patients treated non-operatively for AIS with TL/L curve, 56 (55 females; average age at the time of survey, 39...
May 10, 2018: Spine
https://www.readbyqxmd.com/read/29750124/a-small-disc-area-is-a-risk-factor-for-visual-field-loss-progression-in-primary-open-angle-glaucoma-the-glaucoma-stereo-analysis-study
#15
Yasushi Kitaoka, Masaki Tanito, Yu Yokoyama, Koji Nitta, Maki Katai, Kazuko Omodaka, Toru Nakazawa
Purpose: The Glaucoma Stereo Analysis Study, a cross-sectional multicenter collaborative study, used a stereo fundus camera (nonmyd WX) to assess various morphological parameters of the optic nerve head (ONH) in glaucoma patients. We compared the associations of each parameter between the visual field loss progression group and no-progression group. Methods: The study included 187 eyes of 187 patients with primary open-angle glaucoma or normal-tension glaucoma. We divided the mean deviation (MD) slope values of all patients into the progression group (<-0...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29750123/visual-subfield-progression-in-glaucoma-subtypes
#16
Wei-Wen Su, Shian-Sen Hsieh, Shih-Tsung Cheng, Cheng-Wen Su, Wei-Chi Wu, Henry Shen-Lih Chen
Purpose: To investigate visual field progression pattern and factors associated with progression in patients with primary open-angle glaucoma (POAG), normal-tension glaucoma (NTG), and chronic angle-closure glaucoma (CACG). Methods: The raw data of the 30-2 Humphrey Field Analyzer from glaucoma patients with definite visual field progression were processed with pointwise linear regression (PLR) analysis. The rate of change of retinal threshold sensitivity in the ten glaucoma hemifield test (GHT) zones, the upper and the lower hemifields, and the whole field was evaluated and was correlated with patients' basic demographic data...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29746262/clinical-comparison-of-surgical-constructs-for-anterior-cervical-corpectomy-and-fusion-in-patients-with-cervical-spondylotic-myelopathy-or-ossified-posterior-longitudinal-ligament-a-systematic-review-and-meta-analysis
#17
Timothy R Niedzielak, Joseph Palmer, John P Malloy
STUDY DESIGN: This is a systematic review and meta-analysis. OBJECTIVE: To examine the differences in outcomes among current constructs and techniques for anterior cervical corpectomy and fusion (ACCF) in patients with single or multiple level cervical myelopathy (CM) secondary to cervical spondylosis or ossified posterior longitudinal ligament. SUMMARY OF BACKGROUND DATA: The natural history of CM can be a progressive disease process. In such cases, where surgical decompression is indicated to halt the progression, ACCF is typically chosen for pathology located posterior to the vertebral body...
May 9, 2018: Clinical Spine Surgery
https://www.readbyqxmd.com/read/29744598/denaturation-and-aggregation-of-interferon-%C3%AF-in-aqueous-solution
#18
Ryan R Manning, Glenn A Wilson, Ryan E Holcomb, Nathaniel J Zbacnik, Auria A Tellechea, Chelsey L Gilley-Dunn, Ryan J Krammes, Nathan S Krammes, Gabriel J Evans, Charles S Henry, Mark Cornell Manning, Brian M Murphy, Robert W Payne, Derrick S Katayama
PURPOSE: To evaluate the different degrees of residual structure in the unfolded state of interferon-τ using chemical denaturation as a function of temperature by both urea and guanidinium hydrochloride. METHODS: Asymmetrical flow field-flow fractionation (AF4) using both UV and multi-angle laser light scattering (MALLS). Flow Microscopy. All subvisible particle imaging measurements were made using a FlowCAM flow imaging system. RESULTS: The two different denaturants provided different estimates of the conformational stability of the protein when extrapolated back to zero denaturant concentration...
May 9, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29743058/abnormal-pitx1-gene-methylation-in-adolescent-idiopathic-scoliosis-a-pilot-study
#19
Benlong Shi, Liang Xu, Saihu Mao, Leilei Xu, Zhen Liu, Xu Sun, Zezhang Zhu, Yong Qiu
BACKGROUND: The gene of pituitary homeobox 1 (PITX1) has been reported to be down-regulated in adolescent idiopathic scoliosis (AIS), of which the cause has not been well addressed. The abnormal DNA methylation was recently assumed to be an important mechanism for the down-regulated genes expression. However, the association between PITX1 promoter methylation and the etiology of AIS was not clear. METHODS: The peripheral blood samples of 50 AIS patients and 50 healthy controls were collected and the genomic DNA was extracted...
May 9, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29742725/relationship-between-foot-posture-and-dental-malocclusions-in-children-aged-6-to-9-years-a-cross-sectional-study
#20
Ana Marchena-Rodríguez, Noelia Moreno-Morales, Edith Ramírez-Parga, María Teresa Labajo-Manzanares, Alejandro Luque-Suárez, Gabriel Gijon-Nogueron
The aim of this study was to determine the association, if any, between foot posture and dental malocclusions in the anteroposterior plane, in children.The study population consisted of 189 children (95 boys and 94 girls) aged 6 to 9 years. In every case, previous informed consent was requested and obtained from the parent/guardian and the study was approved by the Ethics Committee of the University of Málaga (CEUMA 26/2015H).This observational, descriptive, cross-sectional analysis is based on a study population (STROBE)...
May 2018: Medicine (Baltimore)
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