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https://www.readbyqxmd.com/read/28092531/a-200-1380-khz-quadrifrequency-focused-ultrasound-transducer-for-neurostimulation-in-rodents-and-primates-transcranial-in-vitro-calibration-and-numerical-study-of-the-influence-of-skull-cavity
#1
Charlotte Constans, Thomas Deffieux, Pierre Pouget, Mickael Tanter, Jean-Francois Aubry
Low intensity transcranial focused ultrasound has been demonstrated to produce neuromodulation in both animals and humans. Primarily for technical reasons, frequency is one of the most poorly investigated critical wave parameters. We propose the use of a quadri-band transducer capable of operating at 200, 320, 850 and 1380 kHz for further investigation of the frequency dependence of neuromodulation efficacy while keeping the position of the transducer fixed with respect to the subject's head. This paper presents the results of the transducer calibration in water, in vitro transmission measurements through a monkey skull flap, 3D simulations based on both a μCT-scan of a rat and on CT-scans of 2 macaques...
January 11, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28092383/computational-study-of-the-interplay-between-intermolecular-interactions-and-co2-orientations-in-type-i-hydrates
#2
M Pérez-Rodríguez, A Vidal-Vidal, J M Míguez, F J Blas, J-P Torré, M M Piñeiro
Carbon dioxide (CO2) molecules show a rich orientation landscape when they are enclathrated in type I hydrates. Previous studies have described experimentally their preferential orientations, and some theoretical works have explained, but only partially, these experimental results. In the present paper, we use classical molecular dynamics and electronic density functional theory to advance in the theoretical description of CO2 orientations within type I hydrates. Our results are fully compatible with those previously reported, both theoretical and experimental, the geometric shape of the cavities in hydrate being, and therefore, the steric constraints, responsible for some (but not all) preferential angles...
January 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28092330/prediction-of-anastomotic-leakage-after-laparoscopic-low-anterior-resection-in-male-rectal-cancer-by-pelvic-measurement-in-magnetic-resonance-imaging
#3
Atsushi Tsuruta, Jo Tashiro, Toshimasa Ishii, Yasuo Oka, Asami Suzuki, Hiroka Kondo, Shigeki Yamaguchi
OBJECTIVE: Anastomotic leakage after laparoscopic low anterior resection in male rectal cancer patients with a narrow pelvis cannot be easily resolved. The objective of this study is to assess numerical information of narrow pelvis and to determine whether prediction of morbidity can be possible. METHODS: Retrospective medical record review was performed. From July 2007 to January 2013, 43 consecutive male patients with low rectal cancer who underwent laparoscopic low anterior resection were divided into the anastomotic leakage-negative group and anastomotic leakage-positive group...
January 13, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28092140/a-systematic-review-of-sinonasal-oncocytomas-and-oncocytic-carcinomas-diagnosis-management-and-technical-considerations
#4
REVIEW
Zerina Hodzic, Nicholas R Rowan, Ryota Kashiwazaki, Thomas J Willson, Eric W Wang, Stella E Lee
BACKGROUND: Oncocytomas and oncocytic carcinomas are rare tumors of the sinonasal cavity with the propensity for local invasion. This report and systematic review details a case of a nasal oncocytoma involving the lacrimal sac and provides an update of the current literature. METHODS: A systematic literature review was performed using PubMed and Ovid databases. The data obtained from published articles with sinonasal oncocytoma/oncocytic carcinoma as the primary diagnosis included patient demographics, presentation, radiographic and histologic findings, management, and recurrence rates...
January 16, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28092136/computational-fluid-dynamic-modeling-of-nose-to-ceiling-head-positioning-for-sphenoid-sinus-irrigation
#5
John R Craig, James N Palmer, Kai Zhao
BACKGROUND: After sinus surgery, patients are commonly instructed to irrigate with saline irrigations with their heads over a sink and noses directed inferiorly (nose-to-floor). Although irrigations can penetrate the sinuses in this head position, no study has assessed whether sphenoid sinus penetration can be improved by irrigating with the nose directed superiorly (nose-to-ceiling). The purpose of this study was to use a validated computational fluid dynamics (CFD) model of sinus irrigations to assess the difference in sphenoid sinus delivery of irrigations after irrigating in a nose-to-floor vs nose-to-ceiling head position...
January 16, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28091874/the-influence-of-dental-treatment-on-the-development-of-osteoradionecrosis-after-radiotherapy-by-modern-irradiation-techniques
#6
Ramona Schweyen, Andreas Stang, Andreas Wienke, Alexander Eckert, Thomas Kuhnt, Jeremias Hey
OBJECTIVES: The aim of this study was to analyze the influence of dental treatment on the development of osteoradionecrosis (ORN) of the jaw. METHODS: This study included the data of 776 patients who underwent 3D-CRT or IMRT because of head and neck cancer. Sex, dental status before and after radiotherapy (RT), tumor site, bone surgery during tumor operation, concomitant chemotherapy, and the development of an advanced ORN were documented for each patient. The patients' dentitions before and after RT were classified into four groups with regard to the number and localization of the remaining teeth...
January 13, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28091830/physio-pharmacological-investigations-about-the-anti-inflammatory-and-antinociceptive-efficacy-of-limonene-epoxide
#7
Antonia Amanda Cardoso de Almeida, Renan Oliveira Silva, Lucas Antonio Duarte Nicolau, Tarcísio Vieira de Brito, Damião Pergentino de Sousa, André Luiz Dos Reis Barbosa, Rivelilson Mendes de Freitas, Luciano da Silva Lopes, Jand-Venes Rolim Medeiros, Paulo Michel Pinheiro Ferreira
D-limonene epoxidation generates (+)-limonene epoxide, an understudied compound in the pharmacologically point of view. Herein, we investigated the anti-inflammatory and antinociceptive potentialities of (+)-limonene epoxide and suggested a mechanism of action. The anti-inflammatory potential was analyzed using agents to induce paw edema, permeability, and myeloperoxidase (MPO) activity. Pro-inflammatory cytokines and cell migration of peritoneal cells were also assessed. Antinociceptive effects were evaluated by writhing test induced by acetic acid, formalin, and hot plate assays and contribution of opioid pathways...
January 16, 2017: Inflammation
https://www.readbyqxmd.com/read/28090464/the-efficacy-of-intrauterine-instillation-of-granulocyte-colony-stimulating-factor-in-infertile-women-with-a-thin-endometrium-a-pilot-study
#8
Dayong Lee, Jae Dong Jo, Seul Ki Kim, Byung Chul Jee, Seok Hyun Kim
OBJECTIVE: The study aimed to investigate the efficacy of intrauterine instillation of granulocyte colony-stimulating factor (G-CSF) on the day of ovulation triggering or oocyte retrieval in infertile women with a thin endometrium. METHODS: Fifty women whose endometrial thickness (EMT) was ≤8 mm at the time of triggering during at least one previous in vitro fertilization (IVF) cycle and an index IVF cycle were selected. On the day of triggering (n=12) or oocyte retrieval (n=38), 300 µg of G-CSF was instilled into the uterine cavity...
December 2016: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28090125/a-multi-physics-model-for-ultrasonically-activated-soft-tissue
#9
Rahul Suvranu De
A multi-physics model has been developed to investigate the effects of cellular level mechanisms on the thermomechanical response of ultrasonically activated soft tissue. Cellular level cavitation effects have been incorporated in the tissue level continuum model to accurately determine the thermodynamic states such as temperature and pressure. A viscoelastic material model is assumed for the macromechanical response of the tissue. The cavitation model based equation-of-state provides the additional pressure arising from evaporation of intracellular and cellular water by absorbing heat due to structural and viscoelastic heating in the tissue, and temperature to the continuum level thermomechanical model...
February 1, 2017: Computer Methods in Applied Mechanics and Engineering
https://www.readbyqxmd.com/read/28090078/interfacing-broadband-photonic-qubits-to-on-chip-cavity-protected-rare-earth-ensembles
#10
Tian Zhong, Jonathan M Kindem, Jake Rochman, Andrei Faraon
Ensembles of solid-state optical emitters enable broadband quantum storage and transduction of photonic qubits, with applications in high-rate quantum networks for secure communications and interconnecting future quantum computers. To transfer quantum states using ensembles, rephasing techniques are used to mitigate fast decoherence resulting from inhomogeneous broadening, but these techniques generally limit the bandwidth, efficiency and active times of the quantum interface. Here, we use a dense ensemble of neodymium rare-earth ions strongly coupled to a nanophotonic resonator to demonstrate a significant cavity protection effect at the single-photon level-a technique to suppress ensemble decoherence due to inhomogeneous broadening...
January 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28089938/3d-printed-rf-probeheads-for-low-cost-high-throughput-nmr
#11
R Adam Horch, John C Gore
3D printing has been exploited as a means to fabricate complete NMR probeheads containing arrays of miniature RF circuits for high-throughput solution-state NMR spectroscopy and potentially other purposes. 3D-printed NMR circuits of millimeter scale were constructed consisting of RF coils, variable tuning/matching capacitors, and liquid NMR sample cavities. Channels and cavities capable of being addressed using microfluidics are included in the probehead structure, providing a means for hydraulically-controlled RF tuning/matching and liquid NMR sample loading/unloading...
January 12, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28089705/so-as-we-worry-we-weigh-visible-burrow-system-stress-and-visceral-adiposity
#12
REVIEW
Michelle T Foster
The visible borrow system (VBS) simulates a natural rodent habitat that supports genuine stress provoking social interactions. This model allows investigation of behavioral, neural and endocrine alterations caused by chronic stress. The Sakai lab further used this model to investigate metabolic outcomes of stress in relation to dominance hierarchies formed within the VBS. Communal social conflict occurs among all VBS rats, but only the SUB rats succumb to the redistribution of lipids in the visceral cavity and consequent metabolic dysregulation, such as hyper-insulinemia...
January 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28089575/association-of-uterine-fibroids-and-pregnancy-outcomes-after-ovarian-stimulation-intrauterine-insemination-for-unexplained-infertility
#13
Aaron K Styer, Susan Jin, Dan Liu, Baisong Wang, Alex J Polotsky, Mindy S Christianson, Wendy Vitek, Lawrence Engmann, Karl Hansen, Robert Wild, Richard S Legro, Christos Coutifaris, Ruben Alvero, Randal D Robinson, Peter Casson, Gregory M Christman, Alicia Christy, Michael P Diamond, Esther Eisenberg, Heping Zhang, Nanette Santoro
OBJECTIVE: To investigate the association of non-cavity-distorting uterine fibroids and pregnancy outcomes after ovarian stimulation-intrauterine insemination (OS-IUI) in couples with unexplained infertility. DESIGN: Secondary analysis from a prospective, randomized, multicenter clinical trial investigating fertility outcomes after OS-IUI. SETTING: Reproductive Medicine Network clinical sites. PATIENT(S): Nine hundred couples with unexplained infertility who participated in the Assessment of Multiple Intrauterine Gestations from Ovarian Stimulation (AMIGOS) clinical trial...
January 12, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28089336/a-comparative-study-of-additive-and-subtractive-manufacturing-for-dental-restorations
#14
Eun-Jeong Bae, Il-Do Jeong, Woong-Chul Kim, Ji-Hwan Kim
STATEMENT OF PROBLEM: Digital systems have recently found widespread application in the fabrication of dental restorations. For the clinical assessment of dental restorations fabricated digitally, it is necessary to evaluate their accuracy. However, studies of the accuracy of inlay restorations fabricated with additive manufacturing are lacking. PURPOSE: The purpose of this in vitro study was to evaluate and compare the accuracy of inlay restorations fabricated by using recently introduced additive manufacturing with the accuracy of subtractive methods...
January 12, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28089334/masticatory-function-and-oral-health-related-quality-of-life-in%C3%A2-patients-after-partial-maxillectomies-with-closed-or%C3%A2-open%C3%A2-defects
#15
Mohamed M Said, Takafumi Otomaru, Yesiboli Yeerken, Hisashi Taniguchi
STATEMENT OF PROBLEM: The healing pattern after surgical resection of tumors of the oral cavity involving the maxilla may vary from one patient to another. The result may be open communication between the oral and nasal cavities (open defect) or complete oronasal separation after healing of the defect area (closed defect). PURPOSE: The purpose of this clinical study was to compare masticatory function and oral health-related quality of life (OHRQoL) between patients with closed and open defects who had undergone a partial maxillectomy and were wearing dentomaxillary prostheses...
January 12, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28089325/ecology-of-the-oral-microbiome-beyond-bacteria
#16
REVIEW
Jonathon L Baker, Batbileg Bor, Melissa Agnello, Wenyuan Shi, Xuesong He
Although great strides have been made in understanding the complex bacterial community inhabiting the human oral cavity, for a variety of (mainly technical) reasons the ecological contributions of oral fungi, viruses, phages, and the candidate phyla radiation (CPR) group of ultrasmall bacteria have remained understudied. Several recent reports have illustrated the diversity and importance of these organisms in the oral cavity, while TM7x and Candida albicans have served as crucial paradigms for CPR species and oral fungi, respectively...
January 11, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28088968/-para-neoplastic-autoimmune-multi-organ-syndrome-associated-with-follicular-lymphoma-a-case-report-and-literature-review
#17
D Chen, C Y Lin, X Han, B Chen, Z H Lu, X Y Chang, M H Duan
Objective: To broaden our knowledge of para-neoplastic autoimmune multi-organ syndrome (PAMS). Methods: A patient with PAMS associated with follicular lymphoma and bronchiolitis obliterans treated in our hospital was retrospectively analyzed and the clinical features of PAMS were reviewed. Results: A 49-year-old female patient suffered from painful ulcers in the oral cavity and vagina, dry cough and dyspnea. Imaging examinations suggested multiple lymph node enlargements. Inguinal lymph node biopsy revealed follicular lymphoma...
December 14, 2016: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28088459/strain-development-in-bulk-filled-cavities-of-different-depths-characterized-using-a-non-destructive-acoustic-emission-approach
#18
Annelies Van Ende, Diogo Pedrollo Lise, Jan De Munck, Johan Vanhulst, Martine Wevers, Bart Van Meerbeek
OBJECTIVES: (1) To evaluate the effect of cavity depth and composite type on the interfacial debonding in bulk-filled cavities. (2) To correlate the theoretical shrinkage stress and the level of interfacial debonding determined by acoustic emission (AE). METHODS: 80 sound molars were divided in two groups to receive a Class-I cavity (3.5×3.5mm) with 2.5- or 4.0-mm depth. The cavities were restored with either a conventional paste-like (Filtek Z100, 3M ESPE), a conventional flowable (G-ænial Universal Flo, GC), a bulk-fill paste-like (Tetric EvoCeram Bulk Fill, Ivoclar Vivadent) or a bulk-fill flowable (SDR, Dentsply) composite (n=10)...
January 11, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28088353/expansion-and-differentiation-of-igm-b-cells-in-the-rainbow-trout-peritoneal-cavity-in-response-to-different-antigens
#19
Rosario Castro, Beatriz Abós, Lucia González, Aitor G Granja, Carolina Tafalla
To date, intraperitoneal (i.p.) injection seems to be the most effective vaccination route in aquaculture, as many i.p. administered fish vaccines are capable of conferring strong and long-lasting immune responses. Despite this, how peritoneal leukocytes are regulated upon antigen encounter has only been scarcely studied in fish. Although, in the past, myeloid cells were thought to be the main responders to peritoneal inflammation, a recent study revealed that IgM(+) B cells are one of the main cell types in the teleost peritoneal cavity in response to pathogenic bacteria...
January 11, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28088226/use-of-an-intraoperative-navigation-system-for-retrieving-a-broken-dental-instrument-in-the-mandible-a-case-report
#20
Shintaro Sukegawa, Takahiro Kanno, Akane Shibata, Kenichi Matsumoto, Yuka Sukegawa-Takahashi, Kyosuke Sakaida, Yoshihiko Furuki
BACKGROUND: A fracture of root canal instruments, with a fractured piece protruding beyond the apex, is a troublesome incident during an endodontic treatment. Locating and retrieving them represents a challenge to maxillofacial surgeons because it is difficult to access due to the proximity between the foreign body and vital structures. Although safe and accurate for surgery, radiographs and electromagnetic devices do not provide a precise three-dimensional position. In contrast, computer-aided navigation provides a correlation between preoperatively collected data and intraoperatively encountered anatomy...
January 15, 2017: Journal of Medical Case Reports
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