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https://www.readbyqxmd.com/read/28649630/towards-human-exploration-of-space-the-theseus-review-series-on-muscle-and-bone-research-priorities
#1
Thomas Lang, Jack J W A Van Loon, Susan Bloomfield, Laurence Vico, Angele Chopard, Joern Rittweger, Antonios Kyparos, Dieter Blottner, Ilkka Vuori, Rupert Gerzer, Peter R Cavanagh
Without effective countermeasures, the musculoskeletal system is altered by the microgravity environment of long-duration spaceflight, resulting in atrophy of bone and muscle tissue, as well as in deficits in the function of cartilage, tendons, and vertebral disks. While inflight countermeasures implemented on the International Space Station have evidenced reduction of bone and muscle loss on low-Earth orbit missions of several months in length, important knowledge gaps must be addressed in order to develop effective strategies for managing human musculoskeletal health on exploration class missions well beyond Earth orbit...
2017: NPJ Microgravity
https://www.readbyqxmd.com/read/28647158/a-systematic-review-of-unilateral-versus-bilateral-percutaneous-vertebroplasty-percutaneous-kyphoplasty-for-osteoporotic-vertebral-compression-fractures
#2
Shengping Yang, Changxian Chen, Hanlong Wang, Zhiqiang Wu, Lianqun Liu
OBJECTIVE: The aim of this study was to compare the unilateral and bilateral approaches in treating osteoporotic vertebral compression fractures. METHODS: Based on the principles and methods of the Cochrane systematic reviews, the records of the Cochrane Library, PubMed, Web of Science, Chinese Bio-medicine database, China Journal Full-text Database, VIP database, and Wanfang database were reviewed until October 2014. The randomized controlled trials on unilateral and bilateral approaches to percutaneous vertebroplasty (PVP)/percutaneous kyphoplasty (PKP) for osteoporotic vertebral compression fractures were included...
June 21, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28644940/percutaneous-treatment-of-unstable-scaphoid-waist-fractures
#3
Andrew P Matson, Ryan M Garcia, Marc J Richard, Fraser J Leversedge, J Mack Aldridge, David S Ruch
BACKGROUND: Percutaneous techniques have been described for the treatment of nondisplaced scaphoid fractures, although less information has been reported about outcomes for unstable, displaced fractures. The aim of this study was to evaluate the union and complication rates following manual closed reduction and percutaneous screw placement for a consecutive series of unstable, displaced scaphoid fractures. METHODS: A total of 28 patients (average age, 27 years; 22 male/6 female) were treated for isolated unstable displaced scaphoid waist fractures...
July 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28640081/-direct-vision-operation-of-posterior-atlantoaxial-transpedicular-screw-fixation-for-unstable-atlantoaxial-fractures-a-retrospective-study
#4
Liangliang Cao, Erzhu Yang, Jianguang Xu, Xiaofeng Lian, Bin Cai, Xiaokang Liu, Guowang Zhang
BACKGROUND: The posterior screw fixation in atlas via posterior arch and lateral mass, also called C1 "pedicle" screw, combined with C2 pedicle screw fixiation has shown better biomechanical stability in unstable atlantoaxial fractures. However, its popularization has to fulfill the limitation imposed by anatomical characteristics. The aim of this study was to explore the manipulation, effect, and safety of the atlantoaxial transpedicular screw fixation under "direct vision" for the treatment of unstable atlantoaxial fracture...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28639943/bioprintable-form-of-chitosan-hydrogel-for-bone-tissue-engineering
#5
T Tolga Demirtas, Gülseren Irmak, Menemse Gumusderelioglu
Bioprinting can be defined as the 3D patterning of living cells and other biologics by using a computer-aided layer-by-layer deposition approach. Presence of cells within the ink to usage of a "bio-ink" presents the potential to print of living tissues and organ analogs that can be implanted into damaged/diseased tissue to promote highly controlled cell-based regeneration. In this study, it was shown for the first time that chitosan solution and its composite with nanostructured bone-like hydroxyapatite (HA) can be mixed with cells and printed successfully...
June 22, 2017: Biofabrication
https://www.readbyqxmd.com/read/28638680/genetic-influence-of-growth-and-differentiation-factor-5-gene-polymorphism-104t-c-on-the-development-of-knee-osteoarthritis-and-its-association-with-disease-severity
#6
Mervat I Abd Elazeem, Enas Abolkheir Abdelaleem, Rabab A Mohamed
OBJECTIVE: The growth and differentiation factor 5 (GDF5) gene is recognized for its role in the development, repair, and maintenance of cartilage and bone. The present case-control study was conducted to detect the genetic association between GDF5 (+104T/C) single-nucleotide polymorphism (SNP) and primary knee osteoarthritis (KOA), as well as the possible association of SNP with the severity of KOA. MATERIAL AND METHODS: The study included 50 patients with primary KOA and 50 healthy control subjects...
June 2017: European Journal of Rheumatology
https://www.readbyqxmd.com/read/28630327/virus-induced-inflammasome-activation-is-suppressed-by-prostaglandin-d2-dp1-signaling
#7
Rahul Vijay, Anthony R Fehr, Ann M Janowski, Jeremiah Athmer, Dorthea L Wheeler, Matthew Grunewald, Ramakrishna Sompallae, Samarchith P Kurup, David K Meyerholz, Fayyaz S Sutterwala, Shuh Narumiya, Stanley Perlman
Prostaglandin D2 (PGD2), an eicosanoid with both pro- and anti-inflammatory properties, is the most abundantly expressed prostaglandin in the brain. Here we show that PGD2 signaling through the D-prostanoid receptor 1 (DP1) receptor is necessary for optimal microglia/macrophage activation and IFN expression after infection with a neurotropic coronavirus. Genome-wide expression analyses indicated that PGD2/DP1 signaling is required for up-regulation of a putative inflammasome inhibitor, PYDC3, in CD11b(+) cells in the CNS of infected mice...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28622154/operative-treatment-of-two-part-surgical-neck-fracture-of-the-humerus-intramedullary-nail-versus-locking-compression-plate-with-technical-consideration
#8
Wonyong Lee, Jun-Young Park, Yong-Min Chun
OBJECTIVE: To compare the outcomes of patients who underwent either open reduction internal fixation with a locking plate and screws or closed reduction internal fixation with an antegrade intramedullary (IM) nail for displaced surgical neck fracture of the humerus. DESIGN: retrospective comparative study SETTING:: single institute, Level-I academic trauma center PATIENTS AND INTERVENTION:: Sixty-nine patients with two-part surgical neck fracture of the humerus underwent either an IM nail (38 patients Group A) or a locked plate fixation (31 patients Group B)...
May 23, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28619127/bone-mineral-disturbances-in-patients-with-chronic-kidney-disease-stage-5-not-yet-on-dialysis
#9
Andreja Marn Pernat, Matej Zrimšek
AIMS: This retrospective study evaluates the success of a treatment strategy for secondary hyperparathyroidism in our cohort of patients with chronic kidney disease stage 5 who were not yet on dialysis. MATERIALS AND METHODS: 81 predialysis patients from the outpatient clinic of the Department of Nephrology, University Medical Center Ljubljana were reviewed. We focused on serum markers for bone mineral metabolism including intact parathyroid hormone (PTH), phosphate, corrected calcium, and the usage of phosphate-binding agents and vitamin D analogs...
June 16, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28618433/crestal-sinus-augmentation-with-recombinant-human-bone-morphogenetic-protein-2-clinical-and-radiographic-outcomes-of-2-year-pilot-trial
#10
Ulrike Kuchler, Claudia M Rudelstorfer, Barbara Barth, Gabor Tepper, Dominika Lidinsky, Patrick Heimel, Georg Watzek, Reinhard Gruber
PURPOSE: Recombinant human bone morphogenetic protein 2 (rhBMP-2) together with an absorbable collagen carrier (ACS) was approved for augmentation of the maxillary sinus prior to implant placement. The original registration trial was based on a lateral window approach. Clinical outcomes of crestal sinus augmentation with rhBMP-2 have not been reported so far. MATERIALS AND METHODS: An uncontrolled pilot trial in which seven patients with a residual maxillary height below 5 mm were enrolled to receive crestal sinus augmentation with rhBMP-2/ACS was conducted...
June 14, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28607331/a-retrospective-study-of-percutaneous-balloon-kyphoplasty-for-the-treatment-of-symptomatic-schmorl-s-nodes-5-year-results
#11
Sun Zhi-Yong, Zhao Huan, Ling Feng, Lv Nan-Ning, Zhu Xiao-Yu, Pi Bin, Lin Jun, Qian Zhong-Lai, Zhang Zhi-Ming, Yang Hui-Lin
BACKGROUND Despite literature supporting the efficiency of percutaneous balloon kyphoplasty (PKP) in treating osteoporotic and malignant vertebral compression fractures, few reports exist that document its use for treatment of symptomatic Schmorl's nodes (SNs) refractory to conservative treatment. Patients with symptomatic SNs could have pain in the vertebrae similar to an acute vertebral compression fracture. MRI is very helpful in diagnosing symptomatic SNs when x-ray and CT scan are unremarkable. In painful cases, the vertebrae bone marrow around the SNs is hyperintense on T2-weighted subsequence...
June 13, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28604992/a-new-bioinspired-collagen-hydroxyapatite-bone-graft-substitute-in-adult-scoliosis-surgery-results-at-3-year-follow-up
#12
Pietro Giorgi, Dario Capitani, Simone Sprio, Monica Sandri, Anna Tampieri, Valentina Canella, Angelo Nataloni, Giuseppe R Schirò
BACKGROUND: Spinal fusion is a common procedure used for surgical treatment of spinal deformity. In recent years, many bone graft substitutes (BGS) have been developed to provide good arthrodesis when the available autologous bone harvested from the patient is not enough. The aim of this study was to analyze the use of a new-generation composite material (RegenOss) made of Mg-hydroxyapatite nanoparticles nucleated on type I collagen to obtain long posterolateral fusion in adult scoliosis surgery...
June 7, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/28604488/anterior-cervical-discectomy-and-fusion-outcomes-over-10-years-a-prospective-study
#13
Glenn R Buttermann
STUDY DESIGN: Prospective cohort study with >10-year follow-up. OBJECTIVE: To assess the long-term, >10-year, clinical outcomes of anterior cervical discectomy and fusion (ACDF) and to compare outcomes based on primary diagnosis of disc herniation; stenosis or advanced degenerative disc disease (DDD); number of levels treated; and preexisting adjacent level degeneration. SUMMARY OF BACKGROUND DATA: ACDF is a proven treatment for patients with stenosis and disc herniation and results in significantly improved short- and intermediate-term outcomes...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28600230/cytokine-and-chemokine-profile-changes-in-patients-with-lower-segment-lumbar-degenerative-spondylolisthesis
#14
Juraj Sutovsky, Martin Benco, Martina Sutovska, Michaela Kocmalova, Lenka Pappova, Juraj Miklusica, Andrej Frano, Egon Kurca
BACKGROUND: Lumbar degenerative spondylolisthesis (DS) develops as a result of inflammatory and remodeling processes in facet joints (FJs). Several inflammatory cytokines are involved in the osteoarthritic and remodeling changes that occur and in low-back and/or radicular pain, the most prevalent clinical symptom of disease. This study improves knowledge related to the roles that 27 cytokines, chemokines and growth factors play in the pathophysiology of lumbar DS. MATERIAL AND METHODS: Cytokine levels were examined using capture sandwich immunoassay using the Bio-Plex(®) 200 System and the Bio-PlexTM Human Cytokine Standard 27-Plex, Group I (Bio-Rad, Hercules, California, USA) separately in intervertebral discs (IVDs) and FJ bone tissue...
June 6, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28598582/outcomes-of-intercalary-prosthetic-reconstruction-for-pathological-diaphyseal-femoral-fractures-secondary-to-metastatic-tumors
#15
Hong-Chao Huang, Yong-Cheng Hu, Deng-Xing Lun, Jun Miao, Feng Wang, Xiong-Gang Yang, Xin-Long Ma
OBJECTIVE: To evaluate the clinical outcomes and complications of segmental prosthetic reconstruction for pathological diaphyseal femoral fractures secondary to metastatic tumors. METHODS: Between 2011 and 2015, we retrospectively evaluated 16 patients (6 men and 10 women; 64.5 ± 11.4 years old at diagnosis) who underwent prosthetic reconstruction after segmental resection of diaphyseal femoral fractures due to metastatic lesions. Visual analog scale (VAS), functional outcomes, implant-related complications, and Mean postoperative Musculoskeletal Tumor Society (MSTS) score for each patient were collected...
June 9, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28592489/sustained-notch2-signaling-in-osteoblasts-but-no-in-osteoclasts-is-linked-to-osteopenia-in-a-mouse-model-of-hajdu-cheney-syndrome
#16
Stefano Zanotti, Jungeun Yu, Archana Sanjay, Lauren Schilling, Chris Schoenherr, Aris N Economides, Ernesto Canalis
Individuals with Hajdu-Cheney syndrome (HCS) present with osteoporosis, and HCS is associated with NOTCH2 mutations causing deletions of the proline-, glutamic acid-, serine-, and threonine-rich (PEST) domain that are predicted to enhance NOTCH2 stability and cause gain-of-function. Previously, we demonstrated that mice harboring Notch2 mutations analogous to those in HCS (Notch2HCS) are severely osteopenic because of enhanced bone resorption. We attributed this phenotype to osteoclastic sensitization to receptor activator of nuclear factor-κB ligand and increased osteoblastic tumor necrosis factor superfamily member 11 (Tnfsf11) expression...
June 7, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28590796/noninvasive-therapy-for-osteoid-osteoma-a-prospective-developmental-study-with-mr-imaging-guided-high-intensity-focused-ultrasound
#17
Alessandro Napoli, Alberto Bazzocchi, Roberto Scipione, Michele Anzidei, Luca Saba, Pejman Ghanouni, Denis A Cozzi, Carlo Catalano
Purpose To demonstrate that magnetic resonance (MR) imaging-guided high-intensity focused ultrasound (HIFU) is a safe, effective, and durable treatment option for the management of osteoid osteoma in children and young adults. Materials and Methods This prospective study was institutional review board approved and is registered with clinicaltrials.gov (identification number NCT02302651). Written informed consent was obtained from patients or their parents. Patients who had both clinical and radiologic findings that were diagnostic for nonvertebral osteoid osteoma and no contraindications to MR imaging-guided HIFU were enrolled between June 2010 and June 2013...
June 7, 2017: Radiology
https://www.readbyqxmd.com/read/28586638/efficacy-of-codeine-when-added-to-paracetamol-acetaminophen-and-ibuprofen-for-relief-of-postoperative-pain-after-surgical-removal-of-impacted-third-molars-a-double-blinded-randomized-control-trial
#18
Adrian D Best, R K De Silva, W M Thomson, Darryl C Tong, Claire M Cameron, Harsha L De Silva
PURPOSE: The use of opioids in combination with nonopioids is common practice for acute pain management after third molar surgery. One such combination is paracetamol, ibuprofen, and codeine. The authors assessed the efficacy of codeine when added to a regimen of paracetamol and ibuprofen for pain relief after third molar surgery. MATERIALS AND METHODS: This study was a randomized, double-blinded, placebo-controlled trial conducted in patients undergoing the surgical removal of at least 1 impacted mandibular third molar requiring bone removal...
May 15, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28580039/giemsa-stained-pseudo-micronuclei-in-rat-skin-treated-with-vitamin-d3-analog-pefcalcitol
#19
Akira Takeiri, Kenji Tanaka, Asako Harada, Kaori Matsuzaki, Mariko Yano, Shigeki Motoyama, Chie Katoh, Masayuki Mishima
BACKGROUND: Pefcalcitol, an analog of vitamin D3 (VD3), is an anti-psoriatic drug candidate that is designed to achieve much higher pharmacological effects, such as keratinocyte differentiation, than those of VD3, with fewer side effects. Genotoxicity of the compound was evaluated in a rat skin micronucleus (MN) test. RESULTS: In the rat skin MN test, pefcalcitol showed positive when specimens were stained with Giemsa, whereas neither an in vitro chromosome aberration test in CHL cells nor an in vivo bone marrow MN test in rats indicated clastogenicity...
2017: Genes and Environment: the Official Journal of the Japanese Environmental Mutagen Society
https://www.readbyqxmd.com/read/28578183/central-precocious-puberty-secondary-to-adrenocortical-adenoma-in-a-female-child-case-report-and-review-of-the-literature
#20
Betül Ersoy, Deniz Kizilay, Hasan Çayirli, Peyker Temiz, Cüneyt Günşar
BACKGROUND: Pediatric adrenocortical tumors are rare but significant causes of virilization and peripheral precocious puberty (PPP). CASE: A 4-year-old girl presented with development of breast, pubic hair, and facial acne. Her bone age was advanced, and gonadotropins did not elevate in gonadotropin-releasing hormone (GnRH) test. High levels of dehydroepiandrosterone-sulfate, estradiol, and testosterone and detection of a tumor in the left adrenal gland of the abdomen by computed tomography led to a diagnosis of PPP due to adrenal tumor...
May 31, 2017: Journal of Pediatric and Adolescent Gynecology
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