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Marco Hagen, Gerrit Schwiertz, Karl B Landorf, Hylton B Menz, George S Murley
The pronators and supinators play a key role in the medio-lateral stability of the ankle joint complex (i.e. talo-crural and subtalar joints). We hypothesized that each shank muscle has a specific activation pattern determined by its anatomical course around the axes of the subtalar and talo-crural joints. A secondary objective was to examine the effect of foot posture on these activation patterns. Forty-nine young adults (25 normal-arched feet, 24 flat-arched feet) performed maximum voluntary isometric contractions against manual resistance in four movement directions: plantarflexion (PF), dorsiflexion (DF), pronation (PRO) and supination (SUP)...
October 6, 2016: Human Movement Science
Vipul Vijay, Nishint Gupta, Raju Vaishya
Osteoarticular TB around the tarsal navicular is a chronic, uncommon condition affecting the midfoot, which causes significant morbidity to the patient. Tuberculosis around the tarsal navicular is rarely described in the literature. A series of three cases - two involving the talo-navicular joint and one involving the naviculo-cuneiform joint is described. Biopsy was used in all the cases for achieving diagnosis. All patients had good to fair outcome following medical management with anti-tubercular therapy...
September 20, 2016: Foot
Ahmad Ali-Ahmad, Olivier Bornet, Firas Fadel, Yves Bourne, Florence Vincent, Christophe Bordi, Françoise Guerlesquin, Corinne Sebban-Kreuzer
Pseudomonas aeruginosa is a highly adaptable opportunistic pathogen. It can infect vulnerable patients such as those with cystic fibrosis or hospitalized in intensive care units where it is responsible for both acute and chronic infection. The switch between these infections is controlled by a complex regulatory system involving the central GacS/GacA two-component system that activates the production of two small non-coding RNAs. GacS is a histidine kinase harboring one periplasmic detection domain, two inner-membrane helices and three H1/D1/H2 cytoplasmic domains...
October 6, 2016: Biomolecular NMR Assignments
Verónica Luque-Agudo, Ana María González Gutiérrez, Irene Lagunes, Federico López Galindo, José M Padrón, Emilio Román, José Antonio Serrano, María Victoria Gil
Michael additions between carbohydrate derived nitroalkenes and several aliphatic and aromatic amines proceeded in a stereoselective way, leading to peracetylated 2-amino-1,2-dideoxy-1-nitro-heptitols. In addition, the antiproliferative activity of some of the new adducts has been studied. The results allowed to identify lead compounds which show GI50 values in the range 1.7-19μM.
September 23, 2016: Bioorganic Chemistry
Tuba Talo Yildirim
INTRODUCTION: Dental fear is one of the most common problems in dentistry, for both the patient and for the dentist. This issue can have an important effect on an individual's dental health. AIM: The aim of this paper was to report on the prevalence of dental anxiety and to explore if high levels of anxiety are associated with sociodemographic factors, oral health status, and level of oral health awareness. MATERIALS AND METHODS: The sample for this cross-sectional study included 294 patients (154 males and 140 females)...
July 2016: Journal of Clinical and Diagnostic Research: JCDR
Aikaterini C Tsika, Demetra S M Chatzileontiadou, Demetres D Leonidas, Georgios A Spyroulias
Here, we report the high yield expression and preliminary structural analysis via solution hetero-nuclear NMR spectroscopy of the recombinant Met-1 human Angiogenin. The analysis reveals a well folded as well as, a monomeric polypeptide. Τhe sequence-specific assignment of its (1)H, (15)N and (13)C resonances at high percentage was obtained. Also, using TALOS+ its secondary structure elements were determined.
October 2016: Biomolecular NMR Assignments
Tuğba Kuru Çolak, İlker Çolak, Eren Timurtaş, Güven Bulut, M Gülden Polat
Misalignment of the talar neck after surgical repair can redistribute the load among the posterior, middle, and anterior facets of the subtalar joints, which can change the joint biomechanics, cause arthritis, and impair function. However, we found no studies analyzing the plantar pressures after treatment of talus neck fracture. We determined the dynamic plantar pedobarographic and radiographic characteristics and ankle range of motion, function, and pain among patients after surgical repair of talar neck fractures...
September 2, 2016: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
Nathalie Mayer, Silvia Lopa, Giuseppe Talò, Arianna B Lovati, Marielle Pasdeloup, Stefania A Riboldi, Matteo Moretti, Frédéric Mallein-Gerin
Articular cartilage has poor healing ability and cartilage injuries often evolve to osteoarthritis. Cell-based strategies aiming to engineer cartilaginous tissue through the combination of biocompatible scaffolds and articular chondrocytes represent an alternative to standard surgical techniques. In this context, perfusion bioreactors have been introduced to enhance cellular access to oxygen and nutrients, hence overcoming the limitations of static culture and improving matrix deposition. Here, we combined an optimized cocktail of soluble factors, the BIT (BMP-2, Insulin, Thyroxin), and clinical-grade collagen sponges with a bidirectional perfusion bioreactor, namely the oscillating perfusion bioreactor (OPB), to engineer in vitro articular cartilage by human articular chondrocytes (HACs) obtained from osteoarthritic patients...
2016: PloS One
Masahito Hashimoto, Mami Ozono, Maiko Furuyashiki, Risako Baba, Shuhei Hashiguchi, Yasuo Suda, Koichi Fukase, Yukari Fujimoto
Acetobacter pasteurianus is an aerobic Gram-negative rod that is used in the fermentation process used to produce the traditional Japanese black rice vinegar kurozu. Previously, we found that a hydrophobic fraction derived from kurozu stimulates Toll-like receptors to produce cytokines. LPSs, particularly LPS from A. pasteurianus, are strong candidates for the immunostimulatory component of kurozu. The LPS of A. pasteurianus remains stable in acidic conditions during the 2 years of the abovementioned fermentation process...
September 30, 2016: Journal of Biological Chemistry
James C Chen, Mariano J Alvarez, Flaminia Talos, Harshil Dhruv, Gabrielle E Rieckhof, Archana Iyer, Kristin L Diefes, Kenneth Aldape, Michael Berens, Michael M Shen, Andrea Califano
No abstract text is available yet for this article.
August 11, 2016: Cell
Sebastian A Müller, Alexej Barg, Patrick Vavken, Victor Valderrabano, Andreas M Müller
Sterilized allografts may be less resistant to collapse and prone to nonunion leading to loss of correction in open wedge osteotomies. These adverse events usually occur at early time points (i.e., < 9 months postoperatively). The goal of this study was to compare sterilized allografts to autologous grafts in respect to secondary loss of hindfoot alignment and graft incorporation after lateral calcaneal lengthening osteotomies.Fifty patients (22 F/ 28 M, age: 16-69 years) who had undergone 50 lateral calcaneal lengthening osteotomies for adult flatfoot deformity were included in this retrospective study...
July 2016: Medicine (Baltimore)
Simone Bersini, Iman K Yazdi, Giuseppe Talò, Su Ryon Shin, Matteo Moretti, Ali Khademhosseini
In the past decade, significant advances have been made in the design and optimization of novel biomaterials and microfabrication techniques to generate vascularized tissues. Novel microfluidic systems have facilitated the development and optimization of in vitro models for exploring the complex pathophysiological phenomena that occur inside a microvascular environment. To date, most of these models have focused on engineering of increasingly complex systems, rather than analyzing the molecular and cellular mechanisms that drive microvascular network morphogenesis and remodeling...
November 1, 2016: Biotechnology Advances
Yang Xu, Xing-Chen Li, Xiang-Yang Xu
BACKGROUND: The timing and strategy for operative treatment of flatfoot are still controversial. The purpose of this study was to evaluate clinical outcomes and radiographic changes following calcaneal Z osteotomy combined with subtalar arthroereisis for severe adolescent flexible flatfoot. METHODS: Data were analyzed for 16 patients (20 feet) who had flatfoot without tibialis posterior tendon dysfunction and were treated by calcaneal Z osteotomy combined with arthroereisis between October 2011 and February 2015...
July 9, 2016: Foot & Ankle International
Florent Delhommel, Nicolas Wolff, Florence Cordier
Mammals perceive sounds thanks to mechanosensory hair cells located in the inner ear. The stereocilia of these cells are tightly bound together in bundles by a network of cadherins and scaffolding proteins. Stereocilia deflection induces stretching of this network and is responsible for hair cell depolarization that triggers the neuronal message, transducing the mechanical signal into an electric signal transmissible to the brain. Nearly all proteins involved in this mechano-electrical transduction network contain short C-terminal motifs of interaction with PDZ domains (PSD-95, Discs Large, ZO-1)...
October 2016: Biomolecular NMR Assignments
Tracy Butler, Yi Li, Wai Tsui, Daniel Friedman, Anat Maoz, Xiuyuan Wang, Patrick Harvey, Emily Tanzi, Simon Morim, Yeona Kang, Lisa Mosconi, Delia Talos, Ruben Kuzniecky, Shankar Vallhabjosula, Thomas Thesen, Lidia Glodzik, Masanori Ichise, David Silbersweig, Emily Stern, Mony J de Leon, Jacqueline French
In animal models, inflammation is both a cause and consequence of seizures. Less is known about the role of inflammation in human epilepsy. We performed positron emission tomography (PET) using a radiotracer sensitive to brain inflammation in a patient with frontal epilepsy ~36 h after a seizure as well as during a seizure-free period. When statistically compared to a group of 12 matched controls, both of the patient's scans identified a frontal (supplementary motor area) region of increased inflammation corresponding to his clinically defined seizure focus, but the postseizure scan showed significantly greater inflammation intensity and spatial extent...
September 2016: Epilepsia
M D Chen Wang, Xiang Geng, Shaobai Wang, M D Xin Ma, M D Xu Wang, M D Jiazhang Huang, M D Chao Zhang, M S Li Chen, Junsheng Yang, Kan Wang
The tarsal bones articulate with each other and demonstrate complicated kinematic characteristics. The in vivo motions of these tarsal joints during normal gait are still unclear. Seven healthy subjects were recruited and fourteen feet in total were tested in the current study. Three dimensional models of the tarsal bones were first created using CT scanning. Corresponding local 3D coordinate systems of each tarsal bone was subsequently established for 6DOF motion decompositions. The fluoroscopy system captured the lateral fluoroscopic images of the targeted tarsal region whilst the subject was walking...
September 2016: Gait & Posture
Jason Rhodes, Alfred Mansour, Allison Frickman, Breanna Pritchard, Katherine Flynn, Zhaoxing Pan, Frank Chang, Nancy Miller
BACKGROUND: The Evan's calcaneal lengthening osteotomy is a treatment method for spastic flatfoot deformity in patients with cerebral palsy that fail nonoperative measures. Autograft and allograft have been reported as potential graft choices. Bovine xenograft has been introduced as an alternative, but limited human data exists supporting its efficacy. This study compares the long-term results of allograft versus xenograft in isolated Evan's procedure performed for correction of flexible spastic flatfoot deformity...
July 2, 2016: Journal of Pediatric Orthopedics
Mohammad Ghorbanhoseini, Azadeh Ghaheri, Kempland C Walley, John Y Kwon
BACKGROUND: Intra-articular calcaneus fractures result in heel shortening, widening, varus malalignment, and loss of height. Little has been written regarding superior displacement of the calcaneal tuber, which warrants consideration as previous literature has demonstrated issues arising from a shortened triceps surae. We sought to determine the amount of tuber elevation seen in calcaneus fractures as compared to normal calcanei and propose 2 new measurements that aid in quantifying displacement and may aid in the surgical management of calcaneus fractures...
June 8, 2016: Foot & Ankle International
Ulunay Kanatlı, Erdem Aktas, Haluk Yetkin
BACKGROUND: Flexible flatfoot, as the most prevalent foot deformity in pediatric population still has no standardized strategy for its management hence some orthopedic surgeons have the tendency to use orthotic devices. The objective of this study is to evaluate whether orthotic shoes effect the natural course of the developing medial longitudinal arch in children diagnosed with moderate flexible flatfoot. METHODS: Fourty-five children (33 boys and 12 girls) with moderate flexible flatfoot were enrolled in this study...
September 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
Chiara Arrigoni, Matilde Bongio, Giuseppe Talò, Simone Bersini, Junko Enomoto, Junji Fukuda, Matteo Moretti
A major challenge in the development of clinically relevant 3D tissue constructs is the formation of vascular networks for oxygenation, nutrient supply, and waste removal. To this end, this study implements a multimodal approach for the promotion of vessel-like structures formation in stiff fibrin hydrogels. Computational simulations have been performed to identify the easiest microchanneled configuration assuring normoxic conditions throughout thick cylindrical hydrogels (8 mm height, 6 mm ∅), showing that in our configuration a minimum of three microchannels (600 μm ∅), placed in a non-planar disposition, is required...
July 2016: Advanced Healthcare Materials
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