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https://www.readbyqxmd.com/read/28102447/analysing-a-mechanism-of-failure-in-retrieved-magnetically-controlled-spinal-rods
#1
Vasiliki C Panagiotopoulou, Stewart K Tucker, Robert K Whittaker, Harry S Hothi, Johann Henckel, Julian J H Leong, Thomas Ember, John A Skinner, Alister J Hart
PURPOSE: We aim to describe a mechanism of failure in magnetically controlled growth rods which are used for the correction of the early onset scoliosis. METHODS: This retrieval study involved nine magnetically controlled growth rods, of a single design, revised from five patients for metal staining, progression of scoliosis, swelling, fractured actuator pin, and final fusion. All the retrieved rods were radiographed and assessed macroscopically and microscopically for material loss...
January 19, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28102019/shrimp-tropomyosin-retains-antibody-reactivity-after-exposure-to-acidic-condition
#2
Adeseye Lasekan, Hanjuan Cao, Soheila Maleki, Balunkeswar Balu Nayak
BACKGROUND: Although shrimp can be found in certain high acid food matrix, the allergenic capacity of shrimp tropomyosin exposed to low pH condition has not been fully clarified. Thus, a model marinade comprising white vinegar adjusted to different pH was used to determine the effects of acid-induced denaturation on the immunoreactivity of tropomyosin. RESULTS: Whole shrimp experienced either swelling or shrinkage after marination depending on the vinegar pH and the final muscle pH...
January 19, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28101409/assessment-of-corneal-properties-based-on-statistical-modeling-of-oct-speckle
#3
Danilo A Jesus, D Robert Iskander
A new approach to assess the properties of the corneal micro-structure in vivo based on the statistical modeling of speckle obtained from Optical Coherence Tomography (OCT) is presented. A number of statistical models were proposed to fit the corneal speckle data obtained from OCT raw image. Short-term changes in corneal properties were studied by inducing corneal swelling whereas age-related changes were observed analyzing data of sixty-five subjects aged between twenty-four and seventy-three years. Generalized Gamma distribution has shown to be the best model, in terms of the Akaike's Information Criterion, to fit the OCT corneal speckle...
January 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28101341/influence-of-high-altitude-hypoxic-environments-on-the-survival-of-cochlear-hair-cells-and-spiral-ganglion-neurons-in-rats
#4
Dongyan Fan, Hailong Ren, Dunzhu Danzeng, Haonan Li, Ping Wang
The aim of the present study was to observe the histological changes in the peripheral auditory system in rats at different time-points after relocating from low altitude to high altitude (3,600 m). The general physical condition of the rats was observed and cochlear tissue samples were obtained every month. The morphology and survival of the cochlear hair cells (HCs) were observed using cochlear surface preparation at 1, 30, 90, 120, 150 and 180 days after moving to the plateau area. Changes in spiral ganglion neurons (SGNs) were detected at different time-points using immunofluorescence technology on frozen sections...
December 2016: Biomedical Reports
https://www.readbyqxmd.com/read/28101144/histopathological-findings-in-systemic-sclerosis-related-myopathy-fibrosis-and-microangiopathy-with-lack-of-cellular-inflammation
#5
Claudio Corallo, Maurizio Cutolo, Nila Volpi, Daniela Franci, Margherita Aglianò, Antonio Montella, Chiara Chirico, Stefano Gonnelli, Ranuccio Nuti, Nicola Giordano
OBJECTIVES: The objective of this study was to identify specific histopathological features of skeletal muscle involvement in systemic sclerosis (SSc) patients. METHODS: A total of 35 out of 112 SSc-patients (32%, including 81% female and 68% diffuse scleroderma) presenting clinical, biological and electromyographic (EMG) features of muscle weakness, were included. Patients underwent vastus lateralis biopsy, assessed for individual pathologic features including fibrosis [type I collagen (Coll-I), transforming growth factor β (TGF-β)], microangiopathy [cluster of differentiation 31 (CD31), pro-angiogenic vascular endothelial growth factor A (VEGF-A), anti-angiogenic VEGF-A165b], immune/ inflammatory response [CD4, CD8, CD20, human leucocyte antigens ABC (HLA-ABC)], and membranolytic attack complex (MAC)...
January 2017: Therapeutic Advances in Musculoskeletal Disease
https://www.readbyqxmd.com/read/28100982/bilateral-lower-extremity-edema-caused-by-iliopsoas-bursal-distention-after-hip-arthroplasty
#6
Sameer K Avasarala, Syed T Ahsan
Lower-extremity edema is encountered by internists, nephrologists, vascular specialists, and many others. We report a case of an elderly woman who presented with a painful, swollen left leg. Without a clear diagnosis, she had been taking diuretics for the past 8 years for swelling in both legs. After extensive investigation, we found that her lower-extremity edema was due to bilateral iliopsoas bursal distention secondary to degeneration of her hip prostheses. Chronic breakdown of the polyethylene component of the hip prostheses had led to a communication between the artificial joints and the iliopsoas bursae...
December 2016: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28100948/malignant-proliferating-trichilemmal-tumour-of-the-scalp-with-intra-cranial-extension-and-lung-metastasis-a-case-report
#7
Lancelot Lobo, Amol Dilip Amonkar, V V S M Kumar Dontamsetty
Malignant proliferating trichilemmal tumour (MPTT) is a rare cutaneous tumour predominantly affecting the scalp, eyelids, neck and face of elderly women. It is a large, solitary, multilobulated lesion that may arise within a pilar cyst. These tumours are largely benign, often cystic and are characterized by trichilemmal keratinisation. However at times, the tumour has an aggressive clinical course and a propensity for distant metastasis. We report a case of a 29-year-old male who presented with a scalp swelling...
December 2016: Indian Journal of Surgery
https://www.readbyqxmd.com/read/28100862/-bone-flap-resorption-after-cranioplasty-in-pediatric-patients-report-of-2-cases
#8
Rintaro Yokoyama, Takeshi Mikami, Shouhei Noshiro, Kei Miyata, Kentaro Toyama, Katsuya Komatsu, Noriaki Kikuchi, Tadashi Hasegawa, Nobuhiro Mikuni
Aseptic bone flap resorption, a rare complication after cranioplasty following decompressive craniectomy, is more likely to develop in children. We experienced two cases of aseptic bone flap resorption and identified potential pathophysiological mechanisms through histological findings. In the first case, an 11-year-old girl underwent decompressive craniectomy due to brain swelling with contusion. An autologous bone flap was cryopreserved for four months. Twenty-five months after cranioplasty with autologous bone flap, aseptic bone flap resorption was observed, and cranioplasty was performed with ceramic bone...
January 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28100416/a-retrospective-analysis-of-the-clinical-effects-of-neoadjuvant-combination-therapy-with-full-dose-gemcitabine-and-radiation-therapy-in-patients-with-biliary-tract-cancer
#9
S Kobayashi, A Tomokuni, K Gotoh, H Takahashi, H Akita, S Marubashi, T Yamada, T Teshima, K Fukui, Y Fujiwara, M Sakon
PURPOSE: This study aims to evaluate survival and the objective response to neoadjuvant combination therapy with gemcitabine and radiation therapy in patients with biliary tract cancer. METHODS: The chemoradiation therapy regimen consisted of 3 cycles of full-dose gemcitabine (1000 mg/m(2) at days 1, 8, and 15, every 4 weeks) with 50-60 Gy radiation. We compared 27 patients who received neoadjuvant chemoradiation therapy and 79 patients who were treated without neoadjuvant therapy...
January 11, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28100119/distribution-of-saccharides-and-salts-on-amphoteric-ion-exchange-resin
#10
Yuki Sha, Ayako Hasegawa, Utano Aimoto, Shuji Adachi
An amphoteric ion-exchange resin hardly shrank in 550 and 300 g/L glucose and sodium chloride solutions, respectively; however, the bed packed with a cation-exchange resin shrank considerably. From the distribution coefficients of some saccharides, the swelling pressure of the amphoteric ion-exchange resin was estimated to be 2.0 MPa at 25 °C. The distribution coefficients of glucose, galactose, fructose, and mannose were independent of their concentration and were about 0.621. On the other hand, the apparent distribution coefficients of NaF, NaCl, NaBr, NaI, LiCl, KCl, and CsCl largely depended on concentration...
January 19, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28099596/impact-of-chronic-urticaria-on-the-quality-of-life-of-patients-followed-up-at-a-university-hospital
#11
Gabriela Andrade Coelho Dias, Gisele Viana Pires, Solange Oliveira Rodrigues do Valle, Sérgio Duarte Dortas, Soloni Levy, Alfeu Tavares França, Ilaria Baiardini, Walter Giorgio Canonica
BACKGROUND: Chronic urticaria is a debilitating disease that considerably affects health-related quality of life, and the Chronic Urticaria Quality of Life Questionnaire is the only questionnaire specifically designed for its evaluation. OBJECTIVE: To evaluate the quality of life of patients with chronic urticaria, using the Brazilian Portuguese version of the Chronic Urticaria Quality of Life Questionnaire. METHODS: The Chronic Urticaria Quality of Life Questionnaire was self-administered in 112 chronic urticaria patients and disease activity was assessed through the Urticaria Activity Score...
November 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28098781/distinct-neurotoxicity-profile-of-listeriolysin-o-from-listeria-monocytogenes
#12
Jana Maurer, Sabrina Hupp, Carolin Bischoff, Christina Foertsch, Timothy J Mitchell, Trinad Chakraborty, Asparouh I Iliev
Cholesterol-dependent cytolysins (CDCs) are protein toxins that originate from Gram-positive bacteria and contribute substantially to their pathogenicity. CDCs bind membrane cholesterol and build prepores and lytic pores. Some effects of the toxins are observed in non-lytic concentrations. Two pathogens, Streptococcus pneumoniae and Listeria monocytogenes, cause fatal bacterial meningitis, and both produce toxins of the CDC family-pneumolysin and listeriolysin O, respectively. It has been demonstrated that pneumolysin produces dendritic varicosities (dendrite swellings) and dendritic spine collapse in the mouse neocortex, followed by synaptic loss and astrocyte cell shape remodeling without elevated cell death...
January 13, 2017: Toxins
https://www.readbyqxmd.com/read/28098454/high-sensitive-wearable-textile-based-humidity-sensor-made-of-high-strength-single-walled-carbon-nanotube-swcnt-poly-vinyl-alcohol-pva-filaments
#13
Gengheng Zhou, Joon-Hyung Byun, Youngseok Oh, Byung-Mun Jung, Hwa-Jin Cha, Dong Gi Seong, Moon-Kwang Um, Sangil Hyun, Tsu-Wei Chou
Textile-based humidity sensors can be an important component of smart wearable electronic-textiles and have potential applications in the management of wounds, bed-wetting, and skin pathologies or for microclimate control in clothing. Here, we report a wearable textile-based humidity sensor for the first time using high strength (~750 MPa) and ultra-tough (energy-to-break, 4300 J g-1) SWCNT/PVA filaments via a wet-spinning process. The conductive SWCNT networks in the filaments can be modulated by adjusting the intertube distance by swelling the PVA molecular chains via the absorption of water molecules...
January 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28098409/trpv4-contributes-to-resting-membrane-potential-in-retinal-m%C3%A3-ller-cells-implications-in-cell-volume-regulation
#14
Vanina Netti, Juan Fernández, Maia Kalstein, Alejandro Pizzoni, Gisela Di Giusto, Valeria Rivarola, Paula Ford, Claudia Capurro
Neural activity alters osmotic gradients favoring cell swelling in retinal Müller cells. This swelling is followed by a regulatory volume decrease (RVD), partially mediated by an efflux of KCl and water. The transient receptor potential channel 4 (TRPV4), a nonselective calcium channel, has been proposed as a candidate for mediating intracellular Ca(2+) elevation induced by swelling. We previously demonstrated in a human Müller cell line (MIO-M1) that RVD strongly depends on ion channel activation and, consequently, on membrane potential (Vm )...
January 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28098316/a-family-of-mechanically-adaptive-supramolecular-graphene-oxide-poly-ethylenimine-hydrogels-from-aqueous-assembly
#15
Chao Wang, Yipin Duan, Nicole S Zacharia, Bryan D Vogt
Composite hydrogels containing graphene oxide (GO) offer advantageous mechanical properties, but tuning these properties generally requires the synthesis of new hydrogels or if the hydrogel is thermally responsive, utilization of a chemistry determined temperature window. Here, we demonstrate a simple route to generate a family of GO-based hydrogels from aqueous solution based assembly of GO with polycationic poly(ethylenimine), PEI, without any secondary chemical crosslinking. Tuning the ratio of GO : PEI during the assembly produces a family of hydrogels that responds to mechanical compression by irreversibly altering their equilibrium water content and mechanical properties in a controllable manner...
January 18, 2017: Soft Matter
https://www.readbyqxmd.com/read/28097450/contemporary-thoughts-on-the-management-of-spigelian-hernia
#16
V Webber, C Low, R J E Skipworth, S Kumar, A C de Beaux, B Tulloh
BACKGROUND: Spigelian hernias are said to be a rare condition of the elderly population, usually arising below the arcuate line. Local experience has led us to challenge these commonly held beliefs. METHODS: Operations for Spigelian hernia from 2006-2016 were identified from the Edinburgh Lothian Surgical Audit computerised database and case notes were reviewed. RESULTS: One hundred and one patients underwent surgery for 107 Spigelian hernias in the 10-year period...
January 17, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/28096926/congenital-anterior-urethral-diverticulum-presenting-as-a-scrotal-mass-in-a-two-year-old-child
#17
Ali Gürağaç, Hasan Cem Irkilata, Nahit Yunusov, Zafer Demirer
Here, we describe a case of congenital anterior urethral diverticulum (CAUD) in a two-year-old boy, who presented with right inguinoscrotal swelling that mimicked a spermatic cord cyst or hydrocele. Accurate diagnosis was made intraoperatively by retrograde urethrography. Open diverticulectomy and primary urethroplasty were performed for its management. The clinical presentation, diagnosis, and the management of this rare condition is discussed.
November 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28096609/studies-on-alterations-of-clinical-and-hemato-biochemical-parameters-before-and-after-treatment-in-calves-naturally-infected-with-theileriosis
#18
J P Kachhawa, Surender Kumar, Ankita Sharma, A P Singh, Anil Ahuja
AIM: The aim was to determine hemato-biochemical alterations and to determine the better treatment of theileriosis in naturally infected calves. MATERIALS AND METHODS: A total of 74 Holstein crossbred calves below 6 months of age, of either sex were included for present investigation in Bikaner. Based on the clinical examinations and laboratory results, 20 calves included for hemato-biochemical studies (before and after treatment) and divided into two groups (having 10 calves each)...
December 2016: Veterinary World
https://www.readbyqxmd.com/read/28096229/disseminated-melioidosis-in-the-head-and-neck
#19
Tze Ling Loh, Sergios Latis, Graeme Crossland, Hemi Patel
A 35-year-old man was admitted to an intensive care unit with unilateral facial swelling and septic shock after multiple presentations to the emergency department with non-specific unilateral pain over the parotid area. A CT scan of his neck showed diffuse right-sided facial soft tissue infection, mastoid effusion and temporal lobe cerebritis. The upper lobes of his lungs had cannonball lesions that were suggestive of septic lung metastases. Blood cultures and ear canal swabs were positive for Burkholderia pseudomallei The temporal lobe cerebritis eventually developed into an abscess, necessitating a cortical mastoidectomy, craniectomy and temporal lobectomy...
January 17, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28095420/molecular-mechanism-of-disease-associated-mutations-in-the-pre-m1-helix-of-nmda-receptors-and-potential-rescue-pharmacology
#20
Kevin K Ogden, Wenjuan Chen, Sharon A Swanger, Miranda J McDaniel, Linlin Z Fan, Chun Hu, Anel Tankovic, Hirofumi Kusumoto, Gabrielle J Kosobucki, Anthony J Schulien, Zhuocheng Su, Joseph Pecha, Subhrajit Bhattacharya, Slavé Petrovski, Adam E Cohen, Elias Aizenman, Stephen F Traynelis, Hongjie Yuan
N-methyl-D-aspartate receptors (NMDARs), ligand-gated ionotropic glutamate receptors, play key roles in normal brain development and various neurological disorders. Here we use standing variation data from the human population to assess which protein domains within NMDAR GluN1, GluN2A and GluN2B subunits show the strongest signal for being depleted of missense variants. We find that this includes the GluN2 pre-M1 helix and linker between the agonist-binding domain (ABD) and first transmembrane domain (M1). We then evaluate the functional changes of multiple missense mutations in the NMDAR pre-M1 helix found in children with epilepsy and developmental delay...
January 2017: PLoS Genetics
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