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https://www.readbyqxmd.com/read/28340311/early-clinical-efficacy-comparison-study-of-gamma3-nail-percutaneous-compression-plate-pccp-and-femoral-head-replacement-fhr-treatment-on-senile-unstable-intertrochanteric-fractures
#1
Shaofeng Yang, Yanan Liu, Tongqi Yang, Jun Zou, Huilin Yang
PURPOSE: This study aimed to analyze the early clinical efficacy of Gamma 3 nail, percutaneous compression plate (PCCP) and femoral head replacement (FHR) treatments on senile unstable intertrochanteric fractures. MATERIALS AND METHODS: Totally 116 patients were included to perform an retrospective study, which involved analysis of the operation time, intraoperative blood loss, and hemoglobin reduction on the first postoperative day compared with preoperative levels, fracture gap, neck shaft angle and tip apex distance on the first postoperative X-ray, hospital stay, time from surgery to mobilization, Harris hip scores and Barthel index six months after operation, and complications postoperative meanwhile were evaluated respectively among three groups...
February 10, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28339246/impact-of-atomic-scale-contact-geometry-on-andreev-reflection
#2
J Brand, P Ribeiro, N Néel, S Kirchner, J Kröger
Charge transport has been examined in junctions comprising the normal-metal tip of a low-temperature scanning tunneling microscope, the surface of a conventional superconductor, and adsorbed C_{60} molecules. The Bardeen-Cooper-Schrieffer energy gap gradually evolves into a zero-bias peak with decreasing electrode separation. The peak is assigned to the spectroscopic signature of Andreev reflection. The conductance due to Andreev reflection is determined by the atomic termination of the tip apex and the molecular adsorption orientation...
March 10, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28331084/structural-insights-into-emerging-pediatric-pathogens-human-bocaparvoviruses
#3
Mario Mietzsch, Shweta Kailasan, Jamie Garrison, Maria Ilyas, Paul Chipman, Kalle Kantola, Mandy E Janssen, John Spear, Duncan Sousa, Robert McKenna, Kevin Brown, Maria Söderlund-Venermo, Timothy Baker, Mavis Agbandje-McKenna
Bocaparvoviruses are emerging pathogens of the Parvoviridae family. Human bocaviruses 1 (HBoV1) causes severe respiratory infections and HBoV2-4 gastrointestinal infections in young children. Recent reports of life threatening cases, lack of direct treatment or vaccination, and a limited understanding of their disease mechanisms demand the need to study these pathogens on a molecular and structural level for the development of therapeutics. Towards this end, the capsid structures of HBoV1, HBoV3, and HBoV4 were determined to 2...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28329078/apical-closure-device-for-full-percutaneous-transapical-valve-implantation-stress-test-in-an-animal-model%C3%A2
#4
Enrico Ferrari, Stefanos Demertzis, Jennifer Angelella, Denis Berdajs, Piergiorgio Tozzi, Tiziano Moccetti, Francesco Maisano, Ludwig K von Segesser
OBJECTIVES: Transapical valve implantation is traditionally performed through a left antero-lateral mini-thoracotomy. A self-expandable apical closure device has recently been developed for full-percutaneous transapical valve implantation. We performed haemodynamics stress-tests on an animal model to evaluate the sealing properties. METHODS: Under general anaesthesia 5 pigs (mean weight: 67 ± 6 Kg) received full heparinization (100 IU/Kg; activated clotting time >250 s and, through inferior mini-sternotomies, 21-Fr introducer sheaths for transapical aortic valve implantation (outer diameter: 25-Fr) were placed over-the-wire in the apexes...
January 31, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28326708/-evaluation-of-electromyogram-activity-and-masticatory-efficiency-in-edentulous-individuals-whose-maxillomandibular-horizontal-relationship-records-were-obtained-with-three-different-methods
#5
Liu Cuiling, Yang Liyuan, Zheng Zheng, Gao Xu
OBJECTIVE: This study was performed to investigate the electromyographic (EMG) activity of the masseter muscle and the anterior temporalis muscle, as well as the masticatory efficiency after insertion of the dentures in edentulous individuals whose maxillomandibular horizontal relationship records were obtained with three different methods. METHODS: Ten edentulous individuals were enrolled in this study. Three types of complete dentures for these 10 edentulous patients were made according to their different maxillomandibular horizontal relationship records...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28326539/isotopic-niche-partitioning-between-two-apex-predators-over-time
#6
M Drago, L Cardona, V Franco-Trecu, E A Crespo, D Vales, F Borella, L Zenteno, E M Gonzáles, P Inchausti
1.Stable isotope analyses have become an important tool in reconstructing diets, analyzing resource use patterns, elucidating trophic relations among predators and understanding the structure of food webs. 2.Here, we use stable carbon and nitrogen isotope ratios in bone collagen to reconstruct and compare the isotopic niches of adult South American fur seals (Arctocephalus australis; n = 86) and sea lions (Otaria flavescens; n = 49) -two otariid species with marked morphological differences- in the Río de la Plata estuary (Argentina - Uruguay) and the adjacent Atlantic Ocean during the second half of the 20(th) century and the beginning of the 21(st) century...
March 22, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28326444/quantitative-radiographic-assessment-of-the-anatomic-attachment-sites-of-the-anterior-and-posterior-complexes-of-the-proximal-tibiofibular-joint
#7
Daniel Cole Marchetti, Jorge Chahla, Gilbert Moatshe, Erik L Slette, Robert F LaPrade
PURPOSE: Quantitative guidelines for radiographic identification of the anterior and posterior ligaments of the proximal tibiofibular joint have not been well defined. The purpose of this study was to provide reproducible, quantitative descriptions of radiographic landmarks identifying the anterior and posterior ligament complexes of the proximal tibiofibular joint. It was hypothesized that consistent quantitative data regarding the radiographic location of the anterior and posterior proximal tibiofibular joint ligament complexes could be identified...
March 21, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28326241/modeling-of-the-growth-of-gaas-algaas-core-shell-nanowires
#8
Qian Zhang, Peter W Voorhees, Stephen H Davis
Heterostructured GaAs-AlGaAs core-shell nanowires with have attracted much attention because of their significant advantages and great potential for creating high performance nanophotonics and nanoelectronics. The spontaneous formation of Al-rich stripes along certain crystallographic directions and quantum dots near the apexes of the shell are observed in AlGaAs shells. Controlling the formation of these core-shell heterostructures remains challenging. A two-dimensional model valid on the wire cross section, that accounts for capillarity in the faceted surface limit and deposition has been developed for the evolution of the shell morphology and concentration in Al x Ga1-x As alloys...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28325874/ion-and-inhibitor-binding-of-the-double-ring-ion-selectivity-filter-of-the-mitochondrial-calcium-uniporter
#9
Chan Cao, Shuqing Wang, Tanxing Cui, Xun-Cheng Su, James J Chou
The calcium (Ca(2+)) uniporter of mitochondria is a holocomplex consisting of the Ca(2+)-conducting channel, known as mitochondrial calcium uniporter (MCU), and several accessory and regulatory components. A previous electrophysiology study found that the uniporter has high Ca(2+) selectivity and conductance and this depends critically on the conserved amino acid sequence motif, DXXE (Asp-X-X-Glu) of MCU. A recent NMR structure of the MCU channel from Caenorhabditis elegans revealed that the DXXE forms two parallel carboxylate rings at the channel entrance that seem to serve as the ion selectivity filter, although direct ion interaction of this structural motif has not been addressed...
March 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28323222/laparoscopic-nerve-preserving-sacropexy
#10
Alfredo Ercoli, Stefano Cosma, Francesca Riboni, Giuseppe Campagna, Paolo Petruzzelli, Daniela Surico, Saverio Danese, Giovanni Scambia, Chiara Benedetto
STUDY OBJECTIVE: to demonstrate our developed nerve preserving technique during laparoscopic sacropexy (LSP) for multicompartment pelvic organ prolapse. DESIGN: exemplificative case of our surgical procedure based on a multicentric experience consisting of more than 800 cases in 10 years without major intraoperative complications. Informed consent was taken from the subject, and the institutional review board approved this research. SETTING: public practice at Maggiore della Carità University Hospital, Novara; at Sant'Anna Hospital, City of Health and Science, University of Torino; at A...
March 17, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28321890/a-training-model-for-revitalisation-procedures
#11
M Widbiller, S Ducke, A Eidt, W Buchalla, K M Galler
AIM: To develop an inexpensive simulation model for training of revitalisation procedures. METHODOLOGY: A replica of an immature maxillary central incisor was equipped with a mock blood reservoir at the root apex and embedded in a plaster model. Mock blood consisted of water supplemented with red pigments and fibrinogen, while thrombin was inserted into the root canal to allow for clot formation. RESULTS: A true-to-life training model for revitalisation procedures was established, where the induction of bleeding and formation of a blood clot can be mimicked...
March 21, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28321475/the-forgotten-joint-quantifying-the-anatomy-of-the-proximal-tibiofibular-joint
#12
Jack Anavian, Daniel Cole Marchetti, Gilbert Moatshe, Erik L Slette, Jorge Chahla, Alex W Brady, David M Civitarese, Robert F LaPrade
PURPOSE: Limited objective data exist detailing the quantitative anatomy of the individual bundles of the proximal tibiofibular joint and their relation to surgically pertinent osseous landmarks. The purpose of this study was to qualitatively and quantitatively describe the ligamentous anatomy of the proximal tibiofibular joint and its relation to relevant bony landmarks. METHODS: Ten non-paired, fresh-frozen cadaveric knee specimens were dissected to identify the proximal tibiofibular joint ligament bundles...
March 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28321067/the-histological-features-of-a-myocardial-biopsy-specimen-in-a-patient-in-the-acute-phase-of-reversible-catecholamine-induced-cardiomyopathy-due-to-pheochromocytoma
#13
Miyuki Miura, Hiroaki Kawano, Takeo Yoshida, Yuki Yamagata, Tomoo Nakata, Seiji Koga, Satoshi Ikeda, Kan Kageyama, Kuniko Abe, Koji Maemura
A 63-year-old Japanese woman with an adrenal tumor was transferred to our hospital due to cardiogenic shock. Right and left ventriculography showed severe hypokinesis of the middle segment and the apex in both ventricles, and an endomyocardial biopsy demonstrated a small number of necrotic myocytes and cellular infiltration. She was diagnosed with pheochromocytoma and quickly recovered after treatment with an α-blocker. The functional disability of both the right and left ventricles with less myocardial damage due to an excessive level of catecholamine seemed to be related to the early recovery the present patient with catecholamine-induced cardiomyopathy due to pheochromocytoma...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28321019/myocardial-infarction-in-a-young-man-with-nephrotic-syndrome
#14
Zhenliang Chu, Hang Zhu, Bin Zhang, Liqin Jiang
A 26-year-old man diagnosed with nephrotic syndrome (NS) 2 years previously presented with chest pain. An electrocardiogram (ECG) performed at a local hospital showed ST-elevation in chest leads. Cardiac troponin-I was significantly positive. Echocardiography revealed mild regional wall-motion abnormalities in the heart apex. Seven days later, angiography (CAG) revealed a thrombus in the left anterior descending branch (LAD). Tirofiban was injected into the LAD for thromboclasis. ECG after CAG showed the ST-segment was much lower than before...
March 17, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28320694/rectus-muscle-excyclorotation-and-v-pattern-strabismus-a-quantitative-appraisal-of-clinical-relevance-in-syndromic-craniosynostosis
#15
Linda R Dagi, Sarah MacKinnon, David Zurakowski, Sanjay P Prabhu
PURPOSE: V-pattern strabismus observed with syndromic craniosynostosis has been attributed to disparate causes. We compared severity of V pattern with degree of excyclorotation of rectus muscles to appraise significance of this proposed aetiology. METHODS: 43 patients with Apert, Crouzon or Pfeiffer syndrome referred to Boston Children's Hospital Department of Ophthalmology were identified. 28 met inclusion criteria for retrospective cohort study, specifically: (1) sensorimotor measurements in minimum of seven cardinal gazes, (2) quantified fundus torsion and (3) orbital CT imaging sufficient to measure rectus muscle cyclorotation in coronal and quasicoronal planes, posteriorly (near orbital apex) and anteriorly (near pulleys)...
March 20, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28318949/wing-augmentation-reduces-femoral-head-cutting-out-of-dynamic-hip-screw
#16
Chih-Yu Chen, Shu-Wei Huang, Jui-Sheng Sun, Shin-Yiing Lin, Chih-Sheng Yu, Hsu-Pin Pan, Ping-Hung Lin, Fan-Chun Hsieh, Yang-Hwei Tsuang, Feng-Huei Lin, Rong-Sen Yang, Cheng-Kung Cheng
The dynamic hip screw (DHS) is commonly used in the treatment of femoral intertrochanteric fracture with high satisfactory results. However, post-operative failure does occur and result in poor prognosis. The most common failure is femoral head varus collapse, followed by lag screw cut-out through the femoral head. In this study, a novel-designed DHS with two supplemental horizontal blades was used to improve the fixation stability. In this study, nine convention DHS and 9 Orthopaedic Device Research Center (ODRC) DHSs were tested in this study...
March 17, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28316390/sem-studies-on-acanthocephalan-parasite-echinorhynchus-veli-infecting-the-fish-synaptura-orientalis-bl-sch-1801
#17
S H Sheema, M V John, P V George
Echinorhynchus veli (George and Nadakal, 1978), an acanthocephalid worm infesting the estuarine flat fish, Synaptura orientalis, was collected from the Veli lake, Kerala. The parasite was recovered from the intestine of the host fish. The detailed surface morphology was studied with the help of scanning electron microscope. The study revealed a cylindrical, medially swollen proboscis with a flat apex, backward directed hooks, each with smooth surface, broad base, pointed tip and an epidermal elevation at the point of insertion...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28315339/elastic-microfibril-distribution-in-the-cornea-differences-between-normal-and-keratoconic-stroma
#18
Tomas L White, Philip N Lewis, Robert D Young, Koji Kitazawa, Tsutomu Inatomi, Shigeru Kinoshita, Keith M Meek
The optical and biomechanical properties of the cornea are largely governed by the collagen-rich stroma, a layer that represents approximately 90% of the total thickness. Within the stroma, the specific arrangement of superimposed lamellae provides the tissue with tensile strength, whilst the spatial arrangement of individual collagen fibrils within the lamellae confers transparency. In keratoconus, this precise stromal arrangement is lost, resulting in ectasia and visual impairment. In the normal cornea, we previously characterised the three-dimensional arrangement of an elastic fiber network spanning the posterior stroma from limbus-to-limbus...
March 14, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28315125/evidence-of-non-linear-associations-between-frustration-related-prefrontal-cortex-activation-and-the-normal-abnormal-spectrum-of-irritability-in-young-children
#19
Adam S Grabell, Yanwei Li, Jeff W Barker, Lauren S Wakschlag, Theodore J Huppert, Susan B Perlman
Burgeoning interest in early childhood irritability has recently turned toward neuroimaging techniques to better understand normal versus abnormal irritability using dimensional methods. Current accounts largely assume a linear relationship between poor frustration management, an expression of irritability, and its underlying neural circuitry. However, the relationship between these constructs may not be linear (i.e., operate differently at varying points across the irritability spectrum), with implications for how early atypical irritability is identified and treated...
March 18, 2017: Journal of Abnormal Child Psychology
https://www.readbyqxmd.com/read/28314900/bony-landmark-between-the-attachment-of-the-medial-meniscus-posterior-root-and-the-posterior-cruciate-ligament-ct-and-mr-imaging-assessment
#20
Masataka Fujii, Takayuki Furumatsu, Shinichi Miyazawa, Yuya Kodama, Tomohito Hino, Yusuke Kamatsuki, Toshifumi Ozaki
OBJECTIVES: (1) To reveal the prevalence of the bony recess (posterior dimple) and (2) to determine the position of the posterior dimple on the tibial plateau using three-dimensional computed tomography (3DCT). MATERIALS AND METHODS: In this study, a retrospective review of 112 patients was performed to identify the posterior dimple and to evaluate its position on 3DCT. Magnetic resonance images (MRIs) were also used to determine the positional relationship among the posterior cruciate ligament (PCL), medial meniscus posterior insertion (MMPI), and posterior dimple...
March 18, 2017: Skeletal Radiology
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