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https://www.readbyqxmd.com/read/28643417/congenital-deafness-affects-deep-layers-in-primary-and-secondary-auditory-cortex
#1
Christoph Berger, Daniela Kühne, Verena Scheper, A Kral
Congenital deafness leads to functional deficits in the auditory cortex for which early cochlear implantation can effectively compensate. Most of these deficits have been demonstrated functionally. Furthermore, the majority of previous studies on deafness have involved the primary auditory cortex; knowledge of higher-order areas is limited to effects of cross-modal reorganization. In this study, we compared the cortical cytoarchitecture of four cortical areas in adult hearing and congenitally deaf cats (CDCs): the primary auditory field A1, two secondary auditory fields, namely the dorsal zone (DZ) and second auditory field (A2); and a reference visual association field (area 7) in the same section stained either using Nissl or SMI-32 antibodies...
June 23, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28642125/safety-and-efficacy-of-dual-lead-thalamic-deep-brain-stimulation-for-patients-with-treatment-refractory-multiple-sclerosis-tremor-a-single-centre-randomised-single-blind-pilot-trial
#2
Seth F Oliveria, Ramon L Rodriguez, Dawn Bowers, Daniel Kantor, Justin D Hilliard, Erin H Monari, Bonnie M Scott, Michael S Okun, Kelly D Foote
BACKGROUND: Efficacy in previous studies of surgical treatments of refractory multiple sclerosis tremor using lesioning or deep brain stimulation (DBS) has been variable. The aim of this study was to investigate the safety and efficacy of dual-lead thalamic DBS (one targeting the ventralis intermedius-ventralis oralis posterior nucleus border [the VIM lead] and one targeting the ventralis oralis anterior-ventralis oralis posterior border [the VO lead]) for the treatment of multiple sclerosis tremor...
June 19, 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28641308/detection-of-phosphatidylserine-positive-exosomes-for-the-diagnosis-of-early-stage-malignancies
#3
Raghava Sharma, Xianming Huang, Rolf A Brekken, Alan J Schroit
BACKGROUND: There has been increasing interest in the detection of tumour exosomes in blood for cancer diagnostics. Most studies have focussed on miRNA and protein signatures that are surrogate markers for specific tumour types. Because tumour cells and tumour-derived exosomes display phosphatidylserine (PS) in their outer membrane leaflet, we developed a highly sensitive ELISA-based system that detects picogram amounts of exosomal phospholipid in plasma as a cancer biomarker. METHODS: This report describes the development of a highly specific and sensitive ELISA for the capture of PS-expressing tumour exosomes in the blood of tumour-bearing mice...
June 22, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28629944/what-are-the-risk-factors-for-dislocation-in-primary-total-hip-arthroplasty-a-multicenter-case-control-study-of-128-unstable-and-438-stable-hips
#4
M H Fessy, S Putman, A Viste, R Isida, N Ramdane, A Ferreira, A Leglise, B Rubens-Duval, N Bonin, F Bonnomet, A Combes, S Boisgard, D Mainard, S Leclercq, H Migaud
INTRODUCTION: Dislocation after total hip arthroplasty (THA) is a leading reason for surgical revision. The risk factors for dislocation are controversial, particularly those related to the patient and to the surgical procedure itself. The differences in opinion on the impact of these factors stem from the fact they are often evaluated using retrospective studies or in limited patient populations. This led us to carry out a prospective case-control study on a large population to determine: 1) the risk factors for dislocation after THA, 2) the features of these dislocations, and 3) the contribution of patient-related factors and surgery-related factors...
June 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28629832/evaluation-of-four-designs-of-short-implants-placed-in-atrophic-areas-with-reduced-bone-height-a-three-year-retrospective-clinical-and-radiographic-study
#5
J A Lopez Torres, S A Gehrke, J L Calvo Guirado, L F R Aristazábal
The aim of the present study was to evaluate retrospectively the clinical and radiographic behaviour of four commercially-available short implants with different macrodesigns and microdesigns in areas in which the height of the bone was reduced. We took into account the success and survival, peri-implant crestal bone loss, and the level of probing at which the gum bled. Patients were included if they had been given one or more short implants (≤8.5mm long) in the posterior jaws at least three years earlier...
June 16, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28625664/effects-of-different-numbers-of-mini-dental-implants-on-alveolar-ridge-strain-distribution-under-mandibular-implant-retained-overdentures
#6
Pongsakorn Warin, Pimduen Rungsiyakull, Chaiy Rungsiyakull, Pathawee Khongkhunthian
PURPOSE: To investigate the strains around mini-dental implants (MDIs) and retromolar edentulous areas when using different numbers of MDIs in order to retain mandibular overdentures. MATERIALS AND METHODS: Four different prosthetic situations were fabricated on an edentulous mandibular model including a complete denture (CD), and three overdentures, retained by four, three or two MDIs in the interforaminal region with retentive attachments. A static load of 200N was applied on the posterior teeth of the dentures under bilateral or unilateral loading conditions...
June 15, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28624839/the-effects-of-irrigation-volume-to-the-heat-generation-during-implant-surgery
#7
A Sindel, Ö Dereci, M Hatipoğlu, A Altay, Ö Özalp, A Öztürk
BACKGROUND: To evaluate the effects of the amount of irrigation on heat generated during implant site preparation. MATERIAL AND METHODS: Ten freshly dissected sheep mandibles were sectioned into 30 equal bone blocks and transferred into a heat-controlled water tank. Implant socket preparations were performed with four consecutive drills. Temperature measurements were performed with a thermocouple inserted into the bone immediately before the preparation and after the drilling using three different physiologic saline irrigation set-ups: 1- No irrigation, 2- 12 ml/min and 3- 30 ml/min irrigation volume...
June 18, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28622410/accuracy-of-deformable-image-registration-on-magnetic-resonance-images-in-digital-and-physical-phantoms
#8
Rachel B Ger, Jinzhong Yang, Yao Ding, Megan C Jacobsen, Clifton D Fuller, Rebecca M Howell, Heng Li, R Jason Stafford, Shouhao Zhou, Laurence E Court
PURPOSE: Accurate deformable image registration is necessary for longitudinal studies. The error associated with commercial systems has been evaluated using computed tomography (CT). Several in-house algorithms have been evaluated for use with magnetic resonance imaging (MRI), but there is still relatively little information about MRI deformable image registration. This work presents an evaluation of two deformable image registration systems, one commercial (Velocity) and one in-house (demons-based algorithm), with MRI using two different metrics to quantify the registration error...
June 16, 2017: Medical Physics
https://www.readbyqxmd.com/read/28622068/salmonella-typhimurium-a1-r-targeting-of-a-chemotherapy-resistant-braf-v600e-melanoma-in-a-patient-derived-orthotopic-xenograft-pdox-model-is-enhanced-in-combination-with-either-vemurafenib-temozlomide
#9
Kei Kawaguchi, Kentaro Igarashi, Bartosz Chmielowski, Takashi Murakami, Tasuku Kiyuna, Ming Zhao, Yong Zhang, Scott D Nelson, Tara A Russell, Sarah M Dry, Arun S Singh, Yunfeng Li, Michiaki Unno, Fritz C Eilber, Robert M Hoffman
A metastatic melanoma obtained from the right chest wall of a patient was previously established orthotopically in the right chest wall of nude mice as a patient-derived orthotopic xenograft (PDOX) model. We previously showed that the combination of tumor targeting Salmonella typhimurium A1-R (S. typhimurium A1-R) and chemotherapy was highly effective against the melanoma PDOX. In the present study, we investigated the mechanism of the high efficacy of this combination. Two weeks after implantation, 40 PDOX mouse models were randomized into four groups of 10 mice each: untreated control (n = 10); treated with S...
June 16, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28619021/treatment-of-thoracolumbar-burst-fractures-by-short-segment-pedicle-screw-fixation-using-a-combination-of-two-additional-pedicle-screws-and-vertebroplasty-at-the-level-of-the-fracture-a-finite-element-analysis
#10
Jen-Chung Liao, Weng-Pin Chen, Hao Wang
BACKGROUND: Traditional one-above and one-below four-screw posterior short-segment instrumentation is used for unstable thoracolumbar burst fractures. However, this method has a high rate of implant failure and early loss of reduction. The purpose of this study was to use finite element (FE) analysis to determine the effect of treating thoracolumbar burst fractures by short-segment pedicle screw fixation using a combination of two additional pedicle screws and vertebroplasty at the level of the fracture...
June 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28617531/controlled-release-mitomycin-c-polylactic-acid-film-prevents-epidural-scar-hyperplasia-after-laminectomy-by-inducing-fibroblast-autophagy-and-regulating-the-expression-of-mirnas
#11
B-B Wang, H Xie, T Wu, N Xie, J Wu, Y Gu, F Tang, J Liu
OBJECTIVE: To design a new controlled-release MMC-PLA film and explore whether and how this film could prevent epidural scar hyperplasia and adhesion in a post-laminectomy rat model. MATERIALS AND METHODS: All procedures were performed under the approval and supervision of the Institutional Animal Care and Use Committee (IACUC) of Nanjing Medical University. A total of 120 Sprague-Dawley (SD) rats were randomly placed into four groups after laminectomy (each group=30 rats)...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28608435/cad-cam-fabricated-ceramic-implant-supported-single-crowns-made-from-lithium-disilicate-final-results-of-a-5-year-prospective-cohort-study
#12
Benedikt Christopher Spies, Stefano Pieralli, Kirstin Vach, Ralf-Joachim Kohal
BACKGROUND: All-ceramic bilayer systems suffer from technique-sensitivity, resulting in increased technical complication rates. This might be overcome by monolithic reconstructions, facilitating digital workflows. PURPOSE: To evaluate the clinical and patient-reported outcome of CAD/CAM-fabricated implant-supported single crowns (ISCs) made of lithium disilicate (LS2 ) cemented on ceramic implants 5 years after implant installation. MATERIALS AND METHODS: Twenty-four patients were included in the study...
June 13, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28597206/effect-of-strut-distribution-on-neointimal-coverage-of-everolimus-eluting-bioresorbable-scaffolds-an-optical-coherence-tomography-study
#13
Takao Sato, John Jose, Abdelhakim Allai, Mohamed El-Mawardy, Ralph Tölg, Gert Richardt, Mohamed Abdel-Wahab
The thick struts of bioresorbable vascular scaffolds (BRS) are associated with changes in wall shear stress and contribute to neointimal proliferation. We aimed to evaluate the relationship between the BRS strut distribution and the neointimal proliferation. 50 lesions underwent optical coherence tomography, 12 months after BRS implantation. Scaffold area and neointimal thickness were evaluated in each cross-sectional area (CSA). Scaffold eccentricity was defined as follows: (maximum diameter - minimum diameter) × 100/maximum diameter...
June 9, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28597125/new-insight-to-estimate-under-expansion-after-stent-implantation-on-bifurcation-lesions-using-optical-coherence-tomography
#14
Daisuke Nakamura, Guilherme F Attizzani, Setsu Nishino, Kentaro Tanaka, Mohamad Soud, Gabriel T Pereira, Milana Leygerman, Anas Fares, Audrey Schnell, Marco A Costa, Andrejs Erglis, Hiram G Bezerra
Optical coherence tomography (OCT) allows full volumetric segmentation of the lumen. However, for the estimation of stent under-expansion we still rely on the conventional method (CM) of single cross-sectional narrowing compared with reference vessel, likely masking true lesion significance, especially for bifurcations and tapered vessels. We, therefore, suggest a novel concept of volumetric metrics that take into account vessel tapering and major side branches and is capable of obtaining ideal lumen area for every frame of the stent by OCT...
June 8, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28594592/alveolar-ridge-preservation-using-allografts-and-dptfe-membranes-with-open-membrane-technique-in-unhealthy-extraction-sockets
#15
Gi-Beom Cheon, Kyung Lhi Kang, Mi-Kyung Yoo, Jeoung-A Yu, Dongwoon Lee
We evaluated the effectiveness of the open membrane technique using a high-density polytetrafluoroethylene (dPTFE) membrane with freeze-dried bone allografts (FDBA) in damaged sockets for alveolar ridge preservation (ARP). This retrospective study included 26 sites from 20 patients who had received ARP for the placement of dental implants. ARP was conducted using dPTFE membrane with allografts on the day of extraction without primary closure. When the membrane was removed after 4 weeks, the newly-formed reddish tissue at the grafted site was checked (1st outcome, clinical evaluation)...
June 8, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28591283/outcomes-of-phacoemulsification-in-patients-with-uveitis-at-a-tertiary-center-in-s%C3%A3-o-paulo-brazil-a-review-of-cases-from-2007-to-2012
#16
Patrícia M G Cerqueira, Felipe T B Gaspar C da Silva, Pedro Carlos Carricondo, Edilberto Olivalves, Carlos Eduardo Hirata, Joyce Hisae Yamamoto
Purpose: To evaluate the outcomes of phacoemulsification with intraocular lens (IOL) implantation in eyes with uveitis. Methods: Consecutive patients with uveitis and cataracts who had phacoemulsification and acrylic IOL implantation during 2007-2012 were evaluated for visual outcomes, etiology, and complications. Inflammation was controlled for at least 3 months before surgery, and oral prednisone (0.5 mg/kg/day) was administered to patients with non-infectious uveitis...
March 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28589334/are-there-differences-in-gait-mechanics-in-patients-with-a-fixed-versus-mobile-bearing-total-ankle-arthroplasty-a-randomized-trial
#17
Robin M Queen, Christopher T Franck, Daniel Schmitt, Samuel B Adams
BACKGROUND: Total ankle arthroplasty (TAA) is an alternative to arthrodesis, but no randomized trial has examined whether a fixed bearing or mobile bearing implant provides improved gait mechanics. QUESTIONS/PURPOSES: We wished to determine if fixed- or mobile-bearing TAA results in a larger improvement in pain scores and gait mechanics from before surgery to 1 year after surgery, and to quantify differences in outcomes using statistical analysis and report the standardized effect sizes for such comparisons...
June 6, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28587096/the-effect-of-platelet-rich-fibrin-calcium-sulfate-hemihydrate-platelet-rich-plasma-and-resorbable-collagen-on-soft-tissue-closure-of-extraction-sites
#18
Lisa M Yerke, Amal Jamjoom, Talal M Zahid, Robert E Cohen
Rapid and complete soft tissue healing after tooth extraction minimizes surgical complications and facilitates subsequent implant placement. We used four treatment methods and assessed changes in soft tissue socket closure following tooth extraction in humans. The effects of platelet-rich fibrin-calcium sulfate hemihydrate (PRF-CSH), platelet-rich plasma-calcium sulfate hemihydrate (PRP-CSH), a resorbable collagen dressing (RCD), and no grafting material were compared in a randomized, controlled pilot study with a blinded parallel design (N = 23)...
May 25, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28583419/modified-dynamic-hip-screw-loaded-with-autologous-bone-graft-for-treating-pauwels-type-3-vertical-femoral-neck-fractures
#19
Deqing Luo, Weitao Zou, Yijiao He, Hang Xian, Lei Wang, Jiazuo Shen, Kejian Lian, Dasheng Lin
INTRODUCTION: Management of Pauwels type-3 vertical femoral neck fractures has been a challenging clinical problem as they experience high shear forces and thus a greater risk of treatment failure. There is no apparent consensus on the optimal implant type for these injuries. We developed a modified dynamic hip screw (DHS), which was designed to a cage in the lag screw, loaded with autologous bone graft for the treatment of Pauwels type-3 vertical femoral neck fractures. METHODS: Between February 2010 and January 2012, 17 consecutive patients with Pauwels type-3 vertical femoral neck fractures were treated with the modified DHS loaded with autologous bone graft...
May 26, 2017: Injury
https://www.readbyqxmd.com/read/28583140/live-birth-after-fresh-versus-frozen-single-blastocyst-transfer-frefro-blastocyst-study-protocol-for-a-randomized-controlled-trial
#20
Daimin Wei, Yun Sun, Jiayin Liu, Xiaoyan Liang, Yimin Zhu, Yuhua Shi, Zi-Jiang Chen
BACKGROUND: Multiple pregnancies are one of the major safety concerns of in vitro fertilization (IVF) due to the increased risk of maternal and neonatal complications. Single embryo transfer is the most effective way to reduce the risk of multiple pregnancies. Selection of the embryo and optimization of the implantation environment are crucial to retain the success rate when the number of transferred embryos is diminished. Fresh embryo transfer with supra-physiological levels of hormones has been suggested to have an adverse effect on implantation...
June 5, 2017: Trials
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