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https://www.readbyqxmd.com/read/28437605/aqueously-released-graphene-oxide-embedded-in-epoxy-resin-exhibits-different-characteristics-and-phytotoxicity-of-chlorella-vulgaris-from-the-pristine-form
#1
Xiangang Hu, Weilu Kang, Li Mu
The environmental release of nanoparticles is attracting increasing attention. Graphene oxide (GO) embedded in epoxy resin (ER) is a popular composite that has been used in various fields, but the environmental release of GO-ER composites and the effects on organisms in the environment remain unknown. The present work found that GO-ER composites in water for 2-7 days resulted in the release of 0.3-2.1% GO-ER at nanoscale (2-3 nm thickness and approximately 70-130 nm lateral length). Interestingly, pristine GO quenched 30-45% hydroxyl and 12% nitroxide free radicals, whereas this capacity was not observed for the released particles from GO-ER...
April 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28437495/a-practical-guide-to-understanding-and-treating-patellofemoral-pain
#2
John P Fulkerson
There is no shortcut to accurate diagnosis in the patellofemoral pain patient. Most important in the process is a desire and ability to specifically identify the structural and biomechanical origin of pain. This can be elusive and often requires a careful analysis of all factors affecting the patient, including documenting his or her specific history of pain origin and specific treatments to date, and acknowledging the patient's localization of the pain origin. Many patients can pinpoint the site of pain origin when given the time and encouragement to do so...
March 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28433443/arthroscopic-debridement-versus-platelet-rich-plasma-injection-a-prospective-randomized-comparative-study-of-chronic-lateral-epicondylitis-with-a-nearly-2-year-follow-up
#3
Giovanni Merolla, Fabio Dellabiancia, Annamaria Ricci, Maria Pia Mussoni, Simonetta Nucci, Gustavo Zanoli, Paolo Paladini, Giuseppe Porcellini
PURPOSE: The purpose of this prospective, randomized study was to compare the efficacy of autologous platelet-rich plasma (PRP) injections and arthroscopic lateral release in treating chronic lateral epicondylitis (LE). METHODS: Patients who had a clinical diagnosis of LE confirmed by ultrasound (US) were included in this study. A total of 101 patients received arthroscopic release (n = 50) or US-guided PRP injections (n = 51). Outcomes were assessed using a visual analog scale for pain, the Patient-Rated Tennis Elbow Evaluation (PRTEE), and a calibrated hand dynamometer for grip strength...
April 19, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28432118/molecular-basis-for-exercise-induced-fatigue-the-importance-of-strictly-controlled-cellular-ca-2-handling
#4
Arthur J Cheng, Nicolas Place, Håkan Westerblad
The contractile function of skeletal muscle declines during intense or prolonged physical exercise, that is, fatigue develops. Skeletal muscle fibers fatigue acutely during highly intense exercise when they have to rely on anaerobic metabolism. Early stages of fatigue involve impaired myofibrillar function, whereas decreased Ca(2+) release from the sarcoplasmic reticulum (SR) becomes more important in later stages. SR Ca(2+) release can also become reduced with more prolonged, lower intensity exercise, and it is then related to glycogen depletion...
April 21, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28429673/hydroxytyrosol-attenuates-lps-induced-acute-lung-injury-in-mice-by-regulating-autophagy-and-sirtuin-expression
#5
X Yang, T Jing, Y Li, Y He, B Wang, W Zhang, Y Xiao, W Wang, J Zhang, J Wei, R Lin
BACKGROUND: Recently, the effects of hydroxytyrosol on autophagy during acute lung injury (ALI) have drawn increasing attention. OBJECTIVE: We explored the underlying molecular mechanisms by which hydroxytyrosol exerts its anti-inflammatory effects in a murine model of ALI by up-regulating autophagy. METHODS: Male BALB/c mice, challenged with intranasal instillations of LPS, were treated with or without hydroxytyrosol (HT, 100 mg/kg, intragastrically) 1 h prior to LPS exposure...
April 21, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28426992/factors-affecting-sound-energy-absorbance-in-acute-otitis-media-model-of-chinchilla
#6
Xiying Guan, Thomas W Seale, Rong Z Gan
Acute otitis media (AOM) is a rapid-onset infection of the middle ear which results in middle ear pressure (MEP), middle ear effusion (MEE), and structural changes in middle ear tissues. Previous studies from our laboratory have identified that MEP, MEE, and middle ear structural changes are three factors affecting tympanic membrane (TM) mobility and hearing levels (Guan et al., 2014, 2013). Sound energy reflectance or absorbance (EA) is a diagnostic tool increasingly used in clinical settings for the identification of middle ear diseases...
April 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/28420986/modulation-of-microglial-activity-by-rho-kinase-rock-inhibition-as-therapeutic-strategy-in-parkinson-s-disease-and-amyotrophic-lateral-sclerosis
#7
REVIEW
Anna-Elisa Roser, Lars Tönges, Paul Lingor
Neurodegenerative diseases are characterized by the progressive degeneration of neurons in the central and peripheral nervous system (CNS, PNS), resulting in a reduced innervation of target structures and a loss of function. A shared characteristic of many neurodegenerative diseases is the infiltration of microglial cells into affected brain regions. During early disease stages microglial cells often display a rather neuroprotective phenotype, but switch to a more pro-inflammatory neurotoxic phenotype in later stages of the disease, contributing to the neurodegeneration...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28420518/acute-small-bowel-obstruction-caused-by-barbed-suture-on-the-second-day-after-laparoscopic-hysterosacropexy-a-case-report-and-literature-review
#8
Hsuan Chen, Mun-Kun Hong, Dah-Ching Ding
OBJECTIVE: To report a case of small bowel obstruction caused by barbed suture applied in hysterosacropexy, and possible solutions. CASE REPORT: A 57-year-old woman underwent laparoscopic hysterosacropexy for a Stage 2 uterine prolapse, presenting with acute abdominal pain and a bowel obstruction syndrome 2 days following the surgery. Conservative treatment was given, but the symptoms did not improve and gradually became worse. Diagnostic laparoscopy was performed on the 7(th) day after the hysterosacropexy, and the volvulus was found...
April 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28419693/ag-loaded-mgsrfe-layered-double-hydroxide-chitosan-composite-scaffold-with-enhanced-osteogenic-and-antibacterial-property-for-bone-engineering-tissue
#9
Dandan Cao, Zhengliang Xu, Yixuan Chen, Qinfei Ke, Changqing Zhang, Yaping Guo
Bone tissue engineering scaffolds for the reconstruction of large bone defects should simultaneously promote osteogenic differentiation and avoid postoperative infection. Herein, we develop, for the first time, Ag-loaded MgSrFe-layered double hydroxide/chitosan (Ag-MgSrFe/CS) composite scaffold. This scaffold exhibits three-dimensional interconnected macroporous structure with a pore size of 100-300 μm. The layered double hydroxide nanoplates in the Ag-MgSrFe/CS show lateral sizes of 200-400 nm and thicknesses of ∼50 nm, and the Ag nanoparticles with particle sizes of ∼20 nm are uniformly dispersed on the scaffold surfaces...
April 17, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28418861/brain-derived-neurotrophic-factor-involved-epigenetic-repression-of-ugt2b7-in-colorectal-carcinoma-a-mechanism-to-alter-morphine-glucuronidation-in-tumor
#10
Zi-Zhao Yang, Li Li, Ming-Cheng Xu, Hai-Xing Ju, Miao Hao, Jing-Kai Gu, Zai-Jie Jim Wang, Hui-Di Jiang, Lu-Shan Yu, Su Zeng
Uridine diphosphate-glucuronosyltransferase (UGT) 2B7, as one of significant drug enzymes, is responsible on the glucuronidation of abundant endobiotics or xenobiotics. We here report that it is markedly repressed in the tumor tissues of colorectal carcinoma (CRC) patients. Accordingly, morphine in CRC cells will stimulate the expression of its main metabolic enzyme, UGT2B7 during tolerance generation by activating the positive signals in histone 3, especially for trimethylated lysine 27 (H3K4Me3) and acetylated lysine 4 (H3K27Ac)...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28417593/anomalous-resistance-hysteresis-in-oxide-reram-oxygen-evolution-and-reincorporation-revealed-by-in-situ-tem
#11
David Cooper, Christoph Baeumer, Nicolas Bernier, Astrid Marchewka, Camilla La Torre, Rafal E Dunin-Borkowski, Stephan Menzel, Rainer Waser, Regina Dittmann
The control and rational design of redox-based memristive devices, which are highly attractive candidates for next-generation nonvolatile memory and logic applications, is complicated by competing and poorly understood switching mechanisms, which can result in two coexisting resistance hystereses that have opposite voltage polarity. These competing processes can be defined as regular and anomalous resistive switching. Despite significant characterization efforts, the complex nanoscale redox processes that drive anomalous resistive switching and their implications for current transport remain poorly understood...
April 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28416849/-effect-of-mechanical-self-cleaning-of-tongue-coating-on-malodor-in-halitosis-patients-originating-from-tongue-coating
#12
J Wang, L He
OBJECTIVE: To evaluate the malodor level and to explore the effect of mechanical self-cleaning of tongue coating in patients with halitosis originating from tongue coating. METHODS: Ten patients with halitosis originating from tongue coating were enrolled and divided into two groups randomly. The patients in test group received instruction of mechanical cleaning of tongue coating while no such instruction was given to control group. Organoleptic test (OLT) score, volatile sulfide compounds (VSC) value, area of tongue coating (Ta), thickness of tongue coating (Tt) and periodontal condition were recorded at baseline and were repeated at the end of 1 week, 2 weeks, 4 weeks and 8 weeks later...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28413181/review-of-past-reports-and-current-concepts-of-surgical-management-for-craniosynostosis
#13
Shigeo Kyutoku, Takayuki Inagaki
The purposes of surgery for craniosynostosis are to release increased intracranial pressure and to normalize cranial shape. The procedure was developed from a simple strip craniectomy in practice which ranged from the removal of the fused suture before the 1960s to total calvarial remodeling after 1970s and later methods of the 1990s, such as distraction and its modifications. According to its history, craniofacial surgeons might be changing their procedures with more effective, than less invasive ways. Since the late 1990s, when the distraction was applied to the craniofacial surgery, the gradual expansion, in particular of the anterior cranium, common in Japan, has long been controversial until the Caucasians accepted its use for the posterior cranium...
April 12, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28413023/a-chemoattractant-guided-walk-through-lymphopoiesis-from-hematopoietic-stem-cells-to-mature-b-lymphocytes
#14
Vivian Y Lim, Sandra Zehentmeier, Chris Fistonich, João P Pereira
B lymphocytes develop from hematopoietic stem cells (HSCs) in specialized bone marrow niches composed of rare mesenchymal lineage stem/progenitor cells (MSPCs) and sinusoidal endothelial cells. These niches are defined by function and location: MSPCs are mostly perisinusoidal cells that together with a small subset of sinusoidal endothelial cells express stem cell factor, interleukin-7 (IL-7), IL-15, and the highest amounts of CXCL12 in bone marrow. Though rare, MSPCs are morphologically heterogeneous, highly reticular, and form a vast cellular network in the bone marrow parenchyma capable of interacting with large numbers of hematopoietic cells...
2017: Advances in Immunology
https://www.readbyqxmd.com/read/28412059/a-systematic-review-of-tennis-elbow-surgery-open-versus-arthroscopic-versus-percutaneous-release-of-the-common-extensor-origin
#15
REVIEW
Todd P Pierce, Kimona Issa, Benjamin T Gilbert, Brian Hanly, Anthony Festa, Vincent K McInerney, Anthony J Scillia
PURPOSE: To compare complications, function, pain, and patient satisfaction after conventional open, percutaneous, or arthroscopic release of the extensor origin for the treatment of lateral epicondylitis. METHODS: A thorough review of 4 databases-PubMed, EBSCOhost, CINAHL (Cumulative Index to Nursing and Allied Health Literature) Plus, and Scopus-was performed to identify all studies that addressed surgical management of lateral epicondylitis. We included (1) studies published between 2000 and 2015 and (2) studies with clearly defined surgical techniques...
April 12, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28408155/arthroscopic-capsular-plication-and-labral-seal-restoration-in-borderline-hip-dysplasia-2-year-clinical-outcomes-in-55-cases
#16
Sivashankar Chandrasekaran, Nader Darwish, Timothy J Martin, Carlos Suarez-Ahedo, Parth Lodhia, Benjamin G Domb
PURPOSE: To report clinical outcomes in patients with borderline dysplasia undergoing an arthroscopic technique of labral seal restoration with minimal acetabular rim resection and capsular plication. METHODS: Patients younger than 40 years with a lateral center-edge angle of 18° greater and 25° or less and 2-year follow-up after undergoing an arthroscopic technique of labral seal restoration with minimal rim resection (≤2 mm) and capsular plication (3-5 sutures placed in an oblique orientation to create an imbrication and inferior shift) were included...
April 10, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28400876/adhesive-capsulitis-of-the-shoulder-is-there-consensus-regarding-the-treatment-a-comprehensive-review
#17
REVIEW
Dimitrios Georgiannos, George Markopoulos, Eirini Devetzi, Ilias Bisbinas
BACKGROUND: Adhesive capsulitis of the shoulder (ACS) is a common self-limiting condition characterized by disabling pain and restricted movements. Its pathophysiology is poorly understood, clinically it is characterized by stages of pain and stiffness, and finally often patients never recover fully. However, there is no consensus about available methods of treatment for ACS. The aims of this paper are to discuss and develop issues regarding approaches to management in ACS in the stages of it...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28400787/silicification-in-grasses-variation-between-different-cell-types
#18
REVIEW
Santosh Kumar, Milan Soukup, Rivka Elbaum
Plants take up silicon as mono-silicic acid, which is released to soil by the weathering of silicate minerals. Silicic acid can be taken up by plant roots passively or actively, and later it is deposited in its polymerized form as amorphous hydrated silica. Major silica depositions in grasses occur in root endodermis, leaf epidermal cells, and outer epidermal cells of inflorescence bracts. Debates are rife about the mechanism of silica deposition, and two contrasting scenarios are often proposed to explain it...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28400656/congenital-muscular-torticollis-use-of-gaze-angle-and-translational-deformity-in-assessment-of-facial-asymmetry
#19
Atul Bhaskar, U Harish, Hardik Desai
BACKGROUND: Assessment of facial asymmetry is challenging in torticollis deformity. Neck tilt in toroticollis is associated with deviation of horizontal ocular gaze and translation of neck from the midline. These deviations can be assessed clinically and can be used as surrogate marker for facial asymmetry. MATERIALS AND METHODS: Thirty five children with congenital muscular torticollis (CMT) were classified into three grades of severity based on the new clinical score...
March 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28399657/cadaveric-evaluation-of-dorsal-intermetatarsal-approach-for-plantar-plate-and-lateral-collateral-ligament-repair-of-the-lesser-metatarsophalangeal-joints
#20
Phinit Phisitkul, Vinay Hosuru Siddappa, Tinnart Sittapairoj, Jessica E Goetz, Bryan D Den Hartog, John E Femino
BACKGROUND: Access to the plantar plate has been described using either a plantar approach or an extensive dorsal approach that required complete joint destabilization and often a metatarsal osteotomy. Clinical scenarios related to plantar plate tear vary and the pathologies in early stages are frequently limited to unilateral soft tissue structures; a less invasive operative approach may be possible. A novel approach requiring a release of only the lateral collateral ligament and the lateral half of the plantar plate is presented in this cadaver model; the extent of joint exposure possible is described...
April 1, 2017: Foot & Ankle International
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