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https://www.readbyqxmd.com/read/28698915/surgical-treatment-of-stage-ii-posterior-tibialis-tendon-dysfunction-ten-year-clinical-and-radiographic-results
#1
Alberto Ruffilli, Francesco Traina, Sandro Giannini, Roberto Buda, Fabrizio Perna, Cesare Faldini
INTRODUCTION: Grade II chronic tibialis posterior tendon dysfunction (PTTD) poses a reconstructive challenge to the orthopaedic surgeon. Aim of this retrospective study is to report the clinical and radiographical results of a case series of 63 patients (102 ft) affected by grade II PTTD who underwent tailored surgical treatment at 10-year mean follow-up. MATERIALS AND METHODS: Sixty-three patients (102 ft) were available for clinical and radiological evaluation and were retrospectively reviewed at a mean follow-up of 125...
July 11, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28670651/synthesis-and-biological-evaluation-of-n-arylated-lactam-type-iminosugars-as-potential-immunosuppressive-agents
#2
Hai-Qian Liu, Cheng-Cheng Song, You-Hong Niu, Tao Li, Qin Li, Xin-Shan Ye
Since the immunosuppressive agents currently used in clinics have significant side effects, it is very important to search for new effective and safe immunosuppressants. Iminosugars as a new class of immunosuppressants are less explored. In this report, 24 new N-arylated iminosugar derivatives, including d-talo and d-galacto epimers, were designed and synthesized, and their immunosuppressive effects were evaluated by MTT assay. The experimental data demonstrated that compound 20 showed the strongest inhibition effect (IC50 = 6...
July 19, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28666866/nmr-uncovers-direct-interaction-between-human-nedd4-1-and-p34-sei-1
#3
Pravesh Shrestha, Ji-Hye Yun, Yoon-Joo Ko, Kyu Jeong Yeon, Dooseop Kim, Heejong Lee, Dong-Hoon Jin, Ki-Yup Nam, Hye Dong Yoo, Weontae Lee
PTEN, an important tumor suppressor and a key regulator of the PI3K/AKT signaling pathway, is often deleted/mutated in different types of cancer. The E3 ubiquitin ligase NEDD4-1 catalyzes the polyubiquitination of PTEN, thereby acting as a negative regulator of PTEN. Stability of NEDD4-1, in turn, is tightly controlled by a 34 kDa oncoprotein, p34(SEI-1) and it regulates PTEN degradation and activates PI3K/AKT pathway, resulting in cancer metastasis. p34(SEI-1) affects not only the expression of NEDD4-1 during transcription and translation but also the subcellular localization of PTEN...
June 27, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28625920/c-terminal-tail-of-nadph-oxidase-organizer-1-noxo1-mediates-interaction-with-nadph-oxidase-activator-noxa1-in-the-nox1-complex
#4
Pravesh Shrestha, Ji-Hye Yun, Yoon-Joo Ko, Myeongkyu Kim, Yun Soo Bae, Weontae Lee
NOX1 (NADPH oxidase) similar to phagocyte NADPH oxidase, is expressed mainly in the colon epithelium and it is responsible for host defense against microbial infections by generating ROS (reactive oxygen species). NOX1 is activated by two regulatory cytosolic proteins that form a hetero-dimer, Noxo1 (NOX organizer 1) and Noxa1 (NOX activator 1). The interaction between Noxa1 and Noxo1 is critical for activating NOX1. However no structural studies for interaction between Noxa1 and Noxo1 has not been reported till date...
August 26, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28623061/comparison-of-extraosseous-talotarsal-stabilization-implants-in-a-stage-ii-adult-acquired-flatfoot-model-a-finite-element-analysis
#5
Jian Xu, Xin Ma, Daping Wang, Wei Lu, Weimin Zhu, Kan Ouyang, Haifeng Liu, Hao Li, Luoyong Jiang
Subtalar arthroereisis has been proved to be an efficient method for correcting flexible adult flatfoot. However, the optimal sinus tarsi implant is still debated and yet to be determined. In the present study, we compared the biomechanical effects of type I and II sinus tarsi implants in stage II adult-acquired flatfoot deformity (AAFD). First, a finite element model of stage II AAFD was established in which virtual surgery of subtalar arthroereisis was simulated. The indexes of plantar stress distribution, peak von Mises of the medial and lateral columns, strain of the medial ligaments and plantar fascia, arch height, talo-first metatarsal angle, calcaneus pitch angle, talonavicular coverage angle, and hindfoot valgus angle were all compared and analyzed...
June 13, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28587475/management-of-severe-equinovalgus-in-patients-with-cerebral-palsy-by-naviculectomy-in-combination-with-midfoot-arthrodesis
#6
Chakravarthy U Dussa, Leonhard Döderlein, Raimund Forst, H Böhm, Albert Fujak
BACKGROUND: Equinovalgus deformity is the second most common deformity in cerebral palsy and may be flexible or rigid. Several operative methods from joint sparing to arthrodesis have been described with varying success rates. The aim of this study was to investigate the effectiveness of naviculectomy in combination with midfoot arthrodesis (talo-cuneiform and calcaneocuboid arthrodesis) in the correction of a rigid equinovalgus foot deformity in cerebral palsy. METHODS: Forty-eight rigid equinovalgus feet were operated upon in 30 patients from 2008 to 2013...
June 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28513101/industrialization-of-a-perfusion-bioreactor-prime-example-of-a-non-straightforward-process
#7
G Talò, C Turrisi, C Arrigoni, C Recordati, I Gerges, M Tamplenizza, A Cappelluti, S A Riboldi, M Moretti
Bioreactors are essential enabling technologies for the translation of Advanced Therapies Medicinal Products (ATMPs) from the research field towards a successful clinical application. In order to speed up the translation and the spreading of novel Tissue Engineering (TE) products into the clinical routine, TE bioreactors should evolve from laboratory prototypes towards industrialized products. In this work, we thus challenged the industrialization process of a novel technological platform, based on an established research prototype of perfusion bioreactor, following a GMP-driven approach...
May 16, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28487048/relationship-between-grading-with-magnetic-resonance-imaging-and-radiographic-parameters-in-posterior-tibial-tendon-dysfunction
#8
Kazuya Ikoma, Yusuke Hara, Masamitsu Kido, Kan Imai, Masahiro Maki, Suzuyo Ohashi, Toshikazu Kubo
The objective of the present study was to elucidate the relationship between the state of the posterior tibial tendon (PTT) on magnetic resonance images and foot deformity. The cases included 34 feet in 27 patients with PTT deformity and the controls included 18 feet in 12 patients who had undergone magnetic resonance imaging for other foot diseases. The PTT was closely examined on the magnetic resonance images and classified using the Conti classification. The control feet with no injury to the PTT were classified as grade 0...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28474963/limits-of-calcaneal-lengthening-for-treating-planovalgus-foot-deformity-in-children-with-cerebral-palsy
#9
Chi-An Luo, Hsuan-Kai Kao, Wei-Chun Lee, Wen-E Yang, Chia-Hsieh Chang
BACKGROUND: Calcaneal lengthening is used to correct symptomatic planovalgus foot deformity, but outcomes have been less satisfactory in children with cerebral palsy. This study aimed to define limits of calcaneal lengthening by analyzing the risk factors for undercorrection of deformity. METHODS: We retrospectively reviewed 20 cases of children with cerebral palsy who underwent calcaneal lengthening of 30 planovalgus feet at a mean age of 11.9 years. Foot deformities were evaluated by the anteroposterior talo-first metatarsal angle (normal, 10 ± 7...
May 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28442207/tibio-talo-calcaneal-fusion-after-limb-salvage-procedures-a-retrospective-study
#10
Lukas Zak, Gerald E Wozasek
BACKGROUND: The treatment of limb threatening trauma on the distal tibia or hindfoot often results in posttraumatic osteoarthritis requiring tibiotalocalcaneal (TTC) arthrodesis. The purpose of this study was to present a case series of patients undergoing various techniques of joint fusion after bone reconstruction and deformity correction as a salvage procedure. The study should help trauma surgeons making decisions in limb salvage and deformity correction in complex lower leg and foot injuries by presenting options and treatment strategies...
April 15, 2017: Injury
https://www.readbyqxmd.com/read/28429718/a-computational-systems-approach-identifies-synergistic-specification-genes-that-facilitate-lineage-conversion-to-prostate-tissue
#11
Flaminia Talos, Antonina Mitrofanova, Sarah K Bergren, Andrea Califano, Michael M Shen
To date, reprogramming strategies for generating cell types of interest have been facilitated by detailed understanding of relevant developmental regulatory factors. However, identification of such regulatory drivers often represents a major challenge, as specific gene combinations may be required for reprogramming. Here we show that a computational systems approach can identify cell type specification genes (master regulators) that act synergistically, and demonstrate its application for reprogramming of fibroblasts to prostate tissue...
April 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28328071/investigation-of-c3-s-hydration-mechanism-by-transmission-electron-microscope-tem-with-integrated-super-x-tm-eds-system
#12
Y Sakalli, R Trettin
Tricalciumsilicate (C3 S, Alite) is the major component of the Portland cement clinker. Hydration of Alite is decisive in influencing the properties of the resulting material. This is due to its high content in cement. The mechanism of the hydration of C3 S is very complicated and not yet fully understood. There are different models describing the hydration of C3 S in various ways. In this work for a better understanding of hydration mechanism, the hydrated C3 S was investigated by using the transmission electron microscope (TEM) and for the first time, the samples for the investigations were prepared by using of focused ion beam from sintered pellets of C3 S...
March 22, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28319735/different-combinations-of-growth-factors-for-the-tenogenic-differentiation-of-bone-marrow-mesenchymal-stem-cells-in-monolayer-culture-and-in-fibrin-based-three-dimensional-constructs
#13
Marta Bottagisio, Silvia Lopa, Valentina Granata, Giuseppe Talò, Chiara Bazzocchi, Matteo Moretti, Arianna Barbara Lovati
Tendon injuries are severe burdens in clinics. The poor tendon healing is related to an ineffective response of resident cells and inadequate vascularization. Thanks to the high proliferation and multi-lineage differentiation capability, bone marrow-derived mesenchymal stem cells (BMSCs) are a promising cell source to support the tendon repair. To date, the association of various growth factors to induce the in vitro tenogenic differentiation of multipotent progenitor cells is poorly investigated. This study aimed to investigate the tenogenic differentiation of rabbit BMSCs by testing the combination of bone morphogenetic proteins (BMP-12 and 14) with transforming growth factor beta (TGF-β) and vascular endothelial growth factor (VEGF) both in 2D and 3D cultures within fibrin-based constructs...
May 2017: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/28314231/sea-salt-sodium-record-from-talos-dome-east-antarctica-as-a-potential-proxy-of-the-antarctic-past-sea-ice-extent
#14
M Severi, S Becagli, L Caiazzo, V Ciardini, E Colizza, F Giardi, K Mezgec, C Scarchilli, B Stenni, E R Thomas, R Traversi, R Udisti
Antarctic sea ice has shown an increasing trend in recent decades, but with strong regional differences from one sector to another of the Southern Ocean. The Ross Sea and the Indian sectors have seen an increase in sea ice during the satellite era (1979 onwards). Here we present a record of ssNa(+) flux in the Talos Dome region during a 25-year period spanning from 1979 to 2003, showing that this marker could be used as a potential proxy for reconstructing the sea ice extent in the Ross Sea and Western Pacific Ocean at least for recent decades...
June 2017: Chemosphere
https://www.readbyqxmd.com/read/28230589/effects-of-local-and-systemic-zoledronic-acid-application-on-titanium-implant-osseointegration-an-experimental-study-conducted-on-two-surface-types
#15
Serkan Dundar, Ferhan Yaman, Orhan Gecor, Omer Cakmak, Mustafa Kirtay, Tuba Talo Yildirim, Tahir Karaman, Mehmet Emre Benlidayi
The aim of this study was to evaluate the effects of local and systemic zoledronic acid (ZA) applications on titaniumoksit ceramic blasted (TiO-CB)- and sandblasted large acid-grit (SLA)-surfaced titanium implant osseointegration. Twelve New Zealand White rabbits were used in the study, divided into 6 groups: the TiO-CB (TiO-CB-CNT) (n = 2) and SLA (SLA-CNT) (n = 2) control groups in which TiO-CB- and SLA-surfaced titanium implants were surgically inserted into rabbit tibias but no treatment was applied; the TiO-CB (TiO-CB-LZA) (n = 2) and SLA (SLA-LZA) (n = 2) local ZA groups in which 1 mL of normal saline solution containing 2 mg of ZA was injected into sockets and after this the implants were integrated; and the TiO-CB (TiO-CB-SZA) (n = 2) and SLA (SLA-SZA) (n = 2) systemic ZA groups in which a single infusion of 0...
June 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28229019/is-there-a-relation-between-dental-anxiety-fear-and-general-psychological-status
#16
Tuba Talo Yildirim, Serkan Dundar, Alihan Bozoglan, Tahir Karaman, Neval Dildes, Filiz Acun Kaya, Eyyup Altintas, Faruk Oztekin, Osman Atas, Hilal Alan
BACKGROUND: Dental anxiety is a widespread problem in many populations. This problem can be a barrier to dental care and may lead to poor oral health. Dental anxiety may be related to psychological status. AIMS: The aim of the present study was to assess the levels of dental anxiety, dental fear, Beck Depression, and state-trait anxiety according to age, gender and education level in patients at the periodontology clinic in the Diyarbakır Mouth and Dental Health Center...
2017: PeerJ
https://www.readbyqxmd.com/read/28222170/biomechanical-investigation-of-two-plating-systems-for-medial-column-fusion-in-foot
#17
Paul Simons, Theresia Sommerer, Ivan Zderic, Dieter Wahl, Mark Lenz, Hristo Skulev, Matthias Knobe, Boyko Gueorguiev, R Geoff Richards, Kajetan Klos
BACKGROUND: Arthrodesis of the medial column (navicular, cuneiform I and metatarsal I) is performed for reasons such as Charcot arthropathy, arthritis, posttraumatic reconstruction or severe pes planus. However, the complication rate is still high and mainly resulting from inadequate fixation. Special plates, designed for medial column arthrodesis, seem to offer potential to reduce the complication rate. The aim of this study was to investigate biomechanically plantar and dorsomedial fusion of the medial column using two new plating systems...
2017: PloS One
https://www.readbyqxmd.com/read/27981425/-1-h-15-n-13-c-backbone-resonance-assignments-of-human-soluble-catechol-o-methyltransferase-in-complex-with-s-adenosyl-l-methionine-and-3-5-dinitrocatechol
#18
Sylwia Czarnota, Nicola J Baxter, Matthew J Cliff, Jonathan P Waltho, Nigel S Scrutton, Sam Hay
Catechol O-methyltransferase (COMT) is an enzyme that plays a major role in catechol neurotransmitter deactivation. Inhibition of COMT can increase neurotransmitter levels, which provides a means of treatment for Parkinson's disease, schizophrenia and depression. COMT exists as two isozymes: a soluble cytoplasmic form (S-COMT), expressed in the liver and kidneys and a membrane-bound form (MB-COMT), found mostly in the brain. Here we report the backbone (1)H, (15)N and (13)C chemical shift assignments of S-COMT in complex with S-adenosyl-L-methionine, 3,5-dinitrocatechol and Mg(2+)...
April 2017: Biomolecular NMR Assignments
https://www.readbyqxmd.com/read/27908492/fragility-fractures-of-the-ankle-in-the-elderly-open-reduction-and-internal-fixation-versus-tibio-talo-calcaneal-nailing-short-term-results-of-a-prospective-randomized-controlled-study
#19
D Georgiannos, V Lampridis, I Bisbinas
INTRODUCTION: The management of ankle fractures in the elderly remains unpredictable, secondary to their various co-morbidities. Although tibiotalocalcaneal (TTC) nailing has been an effective option for ankle arthrodesis due to ankle arthritis or Charcot arthropathy there are few reports regarding the use of TTC nail for the treatment of ankle fractures. PURPOSE: Aim of this study was to compare the results of ORIF versus TTC nailing for the treatment of unstable ankle fractures in the elderly...
February 2017: Injury
https://www.readbyqxmd.com/read/27823996/evaluation-of-safety-and-efficacy-of-qinming8631-dr-implantable-cardiac-pacemaker-in-chinese-patients-a-prospective-multicenter-randomized-controlled-trial-of-the-first-domestically-developed-pacemaker-of-china
#20
RANDOMIZED CONTROLLED TRIAL
Mei-Xiang Xiang, Dong-Qi Wang, Jing Xu, Zheng Zhang, Jian-Xin Hu, Dong-Mei Wang, Xiang Gu, He-Ping Liu, Tao Guo, Xiang-Jun Yang, Feng Ling, Jia-Feng Lin, Shang-Lang Cai, Guo-Bin Zhu, Jian-An Wang
BACKGROUND: High cost of imported pacemakers is a main obstacle for Chinese patients suffering from bradyarrhythmia, and a domestically developed pacemaker will help lower the burden. This study aimed to evaluate the safety and efficacy of Qinming8631 DR (Qinming Medical, Baoji, China), the first domestically developed dual-chamber pacemaker of China, compared with a commercially available pacemaker Talos DR (Biotronik, Berlin, Germany) in Chinese patients. METHODS: A prospective randomized trial was conducted at 14 centers in China...
November 20, 2016: Chinese Medical Journal
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