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https://www.readbyqxmd.com/read/29344659/degree-of-endplate-chondrocyte-degeneration-in-different-tension-regions-during-mechanical-stimulation
#1
Yongming Xu, Shujuan Xu, Zhi Gao, Liang Xiao, Fei Xiao, Hongguang Xu, Xiaoling Zhang
The aim of this study was to explore the degree of degeneration of endplate chondrocytes in different tension regions induced by intermittent cyclic mechanical tension (ICMT) in vitro. Rat endplate chondrocytes were harvested and treated with 10% ICMT for 8 h/day with a frequency of 0.5 Hz. A cartilage degeneration model was induced using an FX‑5000T cell strain‑loading system. The experiment was divided into the central region and the peripheral region, according to the contact area between the loading post and the six‑well flexible silicone rubber BioFlex plates...
January 16, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29340058/a-multicenter-prospective-phase-ii-study-of-first-line-modified-folfirinox-for-unresectable-advanced-pancreatic-cancer
#2
Kensaku Yoshida, Takuji Iwashita, Shinya Uemura, Akinori Maruta, Mitsuru Okuno, Nobuhiro Ando, Keisuke Iwata, Junji Kawaguchi, Tsuyoshi Mukai, Masahito Shimizu
Background: FOLFIRINOX (FX) has been reported as an effective treatment for unresectable advanced pancreatic cancer. However, FX is associated with a high incidence of adverse events (AEs). A previous phase II study in Japan showed high incidences of hematological AEs, including febrile neutropenia (22.2%). A modified FX regimen (mFX) may decrease the rates of AEs and be more effective than FX by improving the treatment compliance. Aims: To assess the safety and efficacy of first-line mFX for unresectable advanced pancreatic cancer...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29301346/blood-coagulation-factor-x-exerts-differential-effects-on-adenovirus-entry-into-human-lymphocytes
#3
James S Findlay, Graham P Cook, G Eric Blair
It has been proposed that blood coagulation factors, principally factor X (FX), enhance the uptake of human adenovirus type 5 (Ad5) into cultured epithelial cells by bridging the viral hexon capsid protein and cell-surface heparan sulphate proteoglycans (HSPGs). We studied the effects of FX on Ad transduction of lymphoid cell lines (NK92MI, a natural killer cell line; Daudi, a B-cell line and Jurkat, a T-cell line) as well as primary peripheral blood lymphocytes (PBL) and HeLa epithelial cells using either replication-deficient Ad5, or a derivative in which the Ad5 fiber was replaced with that of another Ad type, Ad35, termed Ad5F35...
January 3, 2018: Viruses
https://www.readbyqxmd.com/read/29297261/multi-step-time-series-forecasting-with-an-ensemble-of-varied-length-mixture-models
#4
Yicun Ouyang, Hujun Yin
Many real-world problems require modeling and forecasting of time series, such as weather temperature, electricity demand, stock prices and foreign exchange (FX) rates. Often, the tasks involve predicting over a long-term period, e.g. several weeks or months. Most existing time series models are inheritably for one-step prediction, that is, predicting one time point ahead. Multi-step or long-term prediction is difficult and challenging due to the lack of information and uncertainty or error accumulation. The main existing approaches, iterative and independent, either use one-step model recursively or treat the multi-step task as an independent model...
November 13, 2017: International Journal of Neural Systems
https://www.readbyqxmd.com/read/29282324/biphasic-functions-for-the-gdnf-ret-signaling-pathway-in-chemosensory-neuron-development-and-diversification
#5
Christopher R Donnelly, Amol A Shah, Charlotte M Mistretta, Robert M Bradley, Brian A Pierchala
The development of the taste system relies on the coordinated regulation of cues that direct the simultaneous development of both peripheral taste organs and innervating sensory ganglia, but the underlying mechanisms remain poorly understood. In this study, we describe a novel, biphasic function for glial cell line-derived neurotrophic factor (GDNF) in the development and subsequent diversification of chemosensory neurons within the geniculate ganglion (GG). GDNF, acting through the receptor tyrosine kinase Ret, regulates the expression of the chemosensory fate determinant Phox2b early in GG development...
December 27, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29251640/a-novel-factor-x-mutation-cys81-by-arg-and-a-reported-factor-vii-polymorphism-arg353-replaced-by-gln-co-occured-in-a-patient
#6
Yanhui Jin, Xiaoli Cheng, Jiayong Zheng, Hong Xia, Lihong Yang, Mingshan Wang
: Coagulation factor X and factor VII (FVII) are both very important components in blood coagulation. To study the molecular pathogenic mechanism of the inherited factor X and FVII deficiency, the factor X activity (FX:C) and FVII activity were tested with one-stage clotting methods. The factor X antigen and factor FVII antigen were tested with ELISA. All the exons, intron-exon boundaries and 5',3'-flanking regions of F10 and F7 genes were amplified by PCR with direct sequencing. The ClustalX software was used to analyze the conservative property of the mutation sites...
December 14, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/29248241/matched-cohort-comparison-of-endovascular-abdominal-aortic-aneurysm-repair-with-and-without-endoanchors
#7
Bart E Muhs, William Jordan, Kenneth Ouriel, Sareh Rajaee, Jean-Paul de Vries
OBJECTIVE: The objective of this study was to examine whether prophylactic use of EndoAnchors (Medtronic, Santa Rosa, Calif) contributes to improved outcomes after endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms through 2 years. METHODS: The Aneurysm Treatment Using the Heli-FX Aortic Securement System Global Registry (ANCHOR) subjects who received prophylactic EndoAnchors during EVAR were considered for this analysis. Imaging data of retrospective subjects who underwent EVAR at ANCHOR enrolling institutions were obtained to create a control sample...
December 13, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29239304/bound-magnetic-polaron-in-zn-rich-cobalt-doped-znse-nanowires
#8
Lipeng Hou, Longfei Pan, Bianbian Liang, Yuting Liu, Li Zhang, Arfan Bukhtiar, Lijie Shi, Ruibin Liu, Bingsuo Zou
The micro-luminescence spectra of the diluted magnetic semiconductor (DMS) can reflect the spin-exciton interaction and related relaxation process. Here the micro-photoluminescence (micro-PL) spectra and PL lifetime measurements have been done on an individual ferromagnetic-coupled cobalt (Co) doped zinc selenide (ZnSe) nanowire. There occurs a double-peak profile in its near bandedge emission spectrum: the first peak is from free exciton (FX) and the second comes from magnetic polaron (MP). In their temperature dependent PL spectra, the MP emission peak demonstrates obviously temperature-independent behavior, in contrast to the behaviors of free exciton and reported exciton magnetic polaron (EMP) in nanobelt...
December 14, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29239067/optical-and-mechanical-properties-of-newly-developed-monolithic-multilayer-zirconia
#9
Shaymaa E Elsaka
PURPOSE: To evaluate the optical and mechanical properties of newly introduced monolithic multilayer zirconia with two types of monolithic zirconia. MATERIALS AND METHODS: Three brands of monolithic zirconia were used in this study: Ceramill Zolid FX Multilayer (CZF), Prettau Anterior (PA), and Zenostar T (ZT). Translucency parameter (TP), contrast ratio (CR), flexural strength, fracture toughness, hardness, brittleness index, and microstructures were assessed. Data were analyzed using one-way ANOVA and Tukey's test...
December 14, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29226646/comparison-of-citrate-buffer-with-sodium-fluoride-as-additives-in-determining-glycemia
#10
Maria de Toro-Crespo, Jose M Maesa-Marquez, Victor Sanchez-Margalet, Concepcion Gonzalez-Rodriguez, Patricia Fernandez-Riejos
BACKGROUND: The objectives of this study are to compare the effect of sodium fluoride and citrate on the stability of glucose in samples maintained at room temperature up to three hours, and to assess the clinical impact in the O'Sullivan test results after changing the additives in the collecting tubes. METHODS: The selected population was pregnant women between the 24th and 28th week of gestation, who were at the health center to undergo the O'Sullivan test as part of the screening program for GDM (gestacional diabetes mellitus)...
November 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/29223152/electron-transfer-through-the-acceptor-side-of-photosystem-i-interaction-with-exogenous-acceptors-and-molecular-oxygen
#11
REVIEW
D A Cherepanov, G E Milanovsky, A A Petrova, A N Tikhonov, A Yu Semenov
This review considers the state-of-the-art on mechanisms and alternative pathways of electron transfer in photosynthetic electron transport chains of chloroplasts and cyanobacteria. The mechanisms of electron transport control between photosystems (PS) I and II and the Calvin-Benson cycle are considered. The redistribution of electron fluxes between the noncyclic, cyclic, and pseudocyclic pathways plays an important role in the regulation of photosynthesis. Mathematical modeling of light-induced electron transport processes is considered...
November 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/29219021/review-of-the-mechanism-of-action-for-supartz-fx-in-knee-osteoarthritis
#12
Roy D Altman, Vinod Dasa, Jun Takeuchi
Objective Summarize the biologic effects of Supartz FX for knee osteoarthritis (OA), the first worldwide clinically approved intra-articular (IA) hyaluronic acid (HA) product. Design To determine the mechanism of action from preclinical and clinical studies, a literature search was conducted of Supartz FX using academic databases from 1987 to 2016. Articles on Supartz FX that deal with its mechanisms of action were extracted, categorized, and reviewed. Results Supartz FX has 2 potential mechanisms of action: (1) biomechanical: IA Supartz FX directly improves the viscoelasticity and lubrication of synovial fluid; (2) physiologic: IA Supartz FX penetrates synovium and cartilage tissues to reach HA receptors on the surface of synoviocytes and chondrocytes...
January 2018: Cartilage
https://www.readbyqxmd.com/read/29215061/local-production-of-activated-factor-x-in-atherosclerotic-plaque-induced-vascular-smooth-muscle-cell-senescence
#13
Fumihiro Sanada, Jun Muratsu, Rei Otsu, Hideo Shimizu, Nobutaka Koibuchi, Kazutaka Uchida, Yoshiaki Taniyama, Shinichi Yoshimura, Hiromi Rakugi, Ryuichi Morishita
Our previous study demonstrated that coagulation factor Xa (FXa) induced endothelial cell senescence, resulting in inflammation and impaired angiogenesis. This mechanism is dictated through protease-activated receptors, PARs, insulin-like growth factor-binding protein 5 (IGFBP-5), and p53. Activation of PARs contributes to the pathophysiology of several chronic inflammatory diseases, including atherosclerosis. Thus, we speculated that similar mechanism might participate in the progression of atherosclerotic plaques...
December 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29204261/recombinant-human-factor-viia-rfviia-in-hemophilia-mode-of-action-and-evidence-to-date
#14
REVIEW
Muriel Giansily-Blaizot, Jean-François Schved
Recombinant activated factor VII (rFVIIa) is a bypassing agent widely used both in the treatment and prevention of hemorrhagic complications due to hemophilia with inhibitor. In such cases, antihemophilic factors cannot be used. The normal physiology of factor VII/ factor VIIa (FVII/FVIIa) in the hemostatic process requires the presence of tissue factor (TF) that links to FVII leading to a FVIIa-TF complex which activates both factor X and factor IX. The therapeutic use of rFVIIa requires high amount of FVIIa...
December 2017: Therapeutic Advances in Hematology
https://www.readbyqxmd.com/read/29201071/hemostasis-in-overt-and-subclinical-hyperthyroidism
#15
REVIEW
Arash Ordookhani, Kenneth D Burman
Context: There are contradictory results on the effect of hyperthyroidism on hemostasis. Inadequate population-based studies limited their clinical implications, mainly on the risk of venous thromboembolism (VTE). The present review focuses on hemostatic changes in overt and subclinical hyperthyroidism. Methods: A systematic literature search was conducted employing MEDLINE database. The following words were used for the search: Hyperthyroidism; thyrotoxicosis; Graves disease; goiter, nodular; hemostasis; blood coagulation factors; blood coagulation disorders; venous thromboembolism; bleeding; fibrinolysis...
July 2017: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29193165/precise-quantitative-assessment-of-the-clinical-performances-of-two-high-flux-polysulfone-hemodialyzers-in-hemodialysis-validation-of-a-blood-based-simple-kinetic-model-versus-direct-dialysis-quantification
#16
Paik-Seong Lim, Yuyu Lin, Minfeng Chen, Xiaoqi Xu, Yun Shi, Sudhir Bowry, Bernard Canaud
Highly permeable dialysis membranes with better design filters have contributed to improved solute removal and dialysis efficacy. However, solute membrane permeability needs to be well controlled to avoid increased loss of albumin that is considered to be detrimental for dialysis patients. A novel high-flux dialyzer type (FX CorDiax; Fresenius Medical Care) incorporating an advanced polysulfone membrane modified with nano-controlled spinning technology to enhance the elimination of a broader spectrum of uremic toxins has been released...
November 27, 2017: Artificial Organs
https://www.readbyqxmd.com/read/29182433/an-experimental-method-to-estimate-upper-limbs-inertia-parameters-during-handcycling
#17
Ghazaleh Azizpour, Matteo Lancini, Giovanni Incerti, Paolo Gaffurini, Giovanni Legnani
This study proposes an experimental method to estimate personalized inertia parameters of upper limbs during handcycling by using a planar dynamic model. The handle forces are expressed as a product of a matrix describing the kinematics terms and a vector of inertial parameters of arm and forearm. The parameters are estimated by measuring the handle forces during a suitable "passive test" and inverting the mentioned matrix. The data was acquired while an operator actuated the handle, and the subject's muscles were relaxed...
November 28, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29181575/is-l5-s1-motion-segment-different-from-the-rest-a-radiographic-kinematic-assessment-of-72-patients-with-chronic-low-back-pain
#18
Ashutosh B Sabnis, Uphar Chamoli, Ashish D Diwan
PURPOSE: The relationship between biomechanical instability and degenerative changes in the lumbar spine in chronic low back pain (CLBP) patients remains controversial. The main objective of this retrospective radiographical study was to evaluate changes in kinematics at different lumbar levels (in particular the L5-S1 level) with progressive grades of disc degeneration and facet joint osteoarthritis in CLBP patients. METHODS: Using standing neutral and dynamic flexion/extension (Fx/Ex) radiographs of the lumbar spine, in vivo segmental kinematics at L1-L2 through L5-S1 were evaluated in 72 consecutive CLBP patients...
November 27, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29165403/multicenter-fx-n-nh%C3%A2-halogen-bonds-x-cl-br-and-n-1-5-qtaim-descriptors-of-the-strength-of-the-x%C3%A2-%C3%A2-%C3%A2-n-interaction
#19
Gabriel J Buralli, Andre N Petelski, Nélida M Peruchena, Gladis L Sosa, Darío J R Duarte
In the present work an in depth deep electronic study of multicenter XBs (FX)n/NH₃ (X = Cl, Br and n = 1-5) is conducted. The ways in which X∙∙∙X lateral contacts affect the electrostatic or covalent nature of the X∙∙∙N interactions are explored at the CCSD(T)/aug-cc-pVTZ level and in the framework of the quantum theory of atoms in molecules (QTAIM). Calculations show that relatively strong XBs have been found with interaction energies lying between -41 and -90 kJ mol(-1) for chlorine complexes, and between -56 and -113 kJ mol(-1) for bromine complexes...
November 22, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29165285/hypofractionated-nodal-radiation-therapy-for-breast-cancer-was-not-associated-with-increased-patient-reported-arm-or-brachial-plexopathy-symptoms
#20
MULTICENTER STUDY
Nelson Leong, Pauline T Truong, Keith Tankel, Winkle Kwan, Lorna Weir, Ivo A Olivotto
PURPOSE: To determine whether nodal radiation therapy (RT) for breast cancer using modest hypofractionation (HF) with 2.25 to 2.5 Gy per fraction (fx) was associated with increased patient-reported arm symptoms, compared with conventional fractionation (CF) ≤2 Gy/fx. METHODS AND MATERIALS: Two cancer registries were used to identify subjects who received computed tomography-planned nodal RT for pT1-3, pN0-2, M0 breast cancer, from 2007 to 2010 at 2 cancer institutions...
December 1, 2017: International Journal of Radiation Oncology, Biology, Physics
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