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https://www.readbyqxmd.com/read/28822825/comparison-of-transforaminal-lumbar-interbody-fusion-outcomes-in-patients-receiving-rhbmp-2-versus-autograft
#1
Taleef R Khan, Kalin R Pearce, Steven J McAnany, Colleen M Peters, Munish C Gupta, Lukas P Zebala
BACKGROUND CONTEXT: Recombinant human bone morphogenetic protein 2 (rhBMP-2) plays a pivotal role in complex spine surgery. Despite its limited approval, the off-label use of rhBMP-2 is prevalent, particularly in transforaminal lumbar interbody fusions (TLIF) PURPOSE: To determine the effectiveness and safety of rhBMP-2 use in TLIF procedures versus autograft. STUDY DESIGN: Retrospective Cohort Study PATIENT SAMPLE: Patients older than 18 years undergoing spine surgery for lumbar degenerative spine disease at a single academic institution...
August 16, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28815865/bone-marrow-and-adipose-mesenchymal-stem-cells-attenuate-cardiac-fibrosis-induced-by-methotrexate-in-rats
#2
Ebtehal Mohammad Fikry, Wedad A Hassan, Amany M Gad
Mesenchymal stem cells (MSCs) are an ideal adult stem cell with capacity for self-renewal and differentiation with an extensive tissue distribution. The present study evaluates the therapeutic effects of bone marrow mesenchymal stem cells (BM-MSCs) or adipose-derived mesenchymal stem cells (AD-MSCs) against the development of methotrexate (MTX)-induced cardiac fibrosis versus dexamethasone (DEX). Rats were allocated into five groups; group 1, received normal saline orally; group 2, received MTX (14 mg/kg/week for 2 weeks); groups 3 and 4, treated once with 2 × 10(6) cells of MTX + BM-MSCs and MTX + AD-MSCs, respectively; and group 5, MTX + DEX (0...
August 16, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28815478/o-2-18-f-fluoroethyl-l-tyrosine-pet-in-gliomas-influence-of-data-processing-in-different-centres
#3
Christian P Filss, Nathalie L Albert, Guido Böning, Elena Rota Kops, Bogdana Suchorska, Gabriele Stoffels, Norbert Galldiks, Nadim J Shah, Felix M Mottaghy, Peter Bartenstein, Jörg C Tonn, Karl-Josef Langen
BACKGROUND: PET using O-(2-[(18)F]fluoroethyl)-L-tyrosine ((18)F-FET) is an established method for brain tumour diagnostics, but data processing varies in different centres. This study analyses the influence of methodological differences between two centres for tumour characterization with (18)F-FET PET using the same PET scanner. Methodological differences between centres A and B in the evaluation of (18)F-FET PET data were identified for (1) framing of PET dynamic data, (2) data reconstruction, (3) cut-off values for tumour delineation to determine tumour-to-brain ratios (TBR) and tumour volume (Tvol) and (4) ROI definition to determine time activity curves (TACs) in the tumour...
August 16, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28812035/bioabsorbable-versus-metal-screw-in-the-fixation-of-tibial-tubercle-transfer-a-cadaveric-biomechanical-study
#4
Janne T Nurmi, Ari Itälä, Raine Sihvonen, Petri Sillanpää, Pekka Kannus, Harri Sievänen, Teppo L N Järvinen
BACKGROUND: In tibial tubercle transfer (TTT) procedures, the osteotomized and transferred tibial tubercle is usually fixed into the host bone using metal screws. PURPOSE: To compare the strength of fixation provided by a single bioabsorbable screw versus a metal screw for TTT. STUDY DESIGN: Controlled laboratory study. METHODS: Twenty-two pairs of human cadaveric tibiae were used to compare the fixation strength of a single 4...
July 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28812019/whole-body-spect-ct-versus-planar-bone-scan-with-targeted-spect-ct-for-metastatic-workup
#5
Olivier Rager, René Nkoulou, Nadia Exquis, Valentina Garibotto, Claire Tabouret-Viaud, Habib Zaidi, Gaël Amzalag, Stephanie Anne Lee-Felker, Thomas Zilli, Osman Ratib
PURPOSE: The use of SPECT/CT in bone scans has been widespread in recent years, but there are no specific guidelines concerning the optimal acquisition protocol. Two strategies have been proposed: targeted SPECT/CT for equivocal lesions detected on planar images or systematic whole-body SPECT/CT. Our aim was to compare the diagnostic accuracy of the two approaches. METHODS: 212 consecutive patients with a history of cancer were referred for bone scans to detect bone metastases...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28811043/treatment-of-the-fixation-surface-improves-glenoid-prosthesis-longevity-in-vitro
#6
Sarah Junaid, Sanjay Sanghavi, Carolyn Anglin, Anthony Bull, Roger Emery, Andrew A Amis, Ulrich Hansen
Many commercial cemented glenoid components claim superior fixation designs and increased survivability. However, both research and clinical studies have shown conflicting results and it is unclear whether these design variations do improve loosening rates. Part of the difficulty in investigating fixation failure is the inability to directly observe the fixation interface, a problem addressed in this study by using a novel experimental set-up. Cyclic loading-displacement tests were carried out on 60 custom-made glenoid prostheses implanted into a bone substitute...
July 22, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28810255/ponatinib-induced-graft-versus-host-disease-graft-versus-leukemia-effect-in-a-patient-with-philadelphia-positive-acute-lymphoblastic-leukemia-without-the-t315i-mutation-relapsing-after-allogeneic-transplant
#7
Annamaria Petrungaro, Massimo Gentile, Carla Mazzone, Rosa Greco, Giuseppina Uccello, Anna Grazia Recchia, Laura De Stefano, Sabrina Bossio, Angela Palummo, Rosellina Morelli, Caterina Musolino, Fortunato Morabito, Ernesto Vigna
We describe the case of a patient with Philadelphia-positive acute lymphoblastic leukemia treated with dasatinib plus steroids as first-line therapy, who achieved a major molecular response (MMR) before undergoing matched, unrelated donor allogeneic stem cell transplant. Eleven months after the transplant, she experienced molecular relapse. Mutational screening showed negativity for the T315I mutation, The patient underwent a salvage chemotherapy regimen with clofarabine + cyclophosphamide + steroids and ponatinib (clofarabine 70 mg i...
August 16, 2017: Chemotherapy
https://www.readbyqxmd.com/read/28809637/-comparison-of-short-therm-results-of-conservative-versus-operative-treatment-of-distal-ulna-fractures-associated-with-distal-radius-fracture-treated-by-plate-osteosynthesis
#8
P Meluzinová, L Kopp, P Dráč, K Edelmann, P Obruba
PURPOSE OF THE STUDY The study aims to evaluate and compare the results of conservative and operative treatment of individual types of distal ulna fractures associated with distal radius fracture treated by plate osteosynthesis and to verify the conclusions of the other authors regarding the recommended therapeutic procedures in these fractures. MATERIAL AND METHODS In the period from 08/2013 to 09/2015, a total of 81 patients participated in the prospective randomised study, with the mean follow-up period of 24 months (6-36)...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28807769/reduced-intensity-haploidentical-bone-marrow-transplantation-with-post-transplant-cyclophosphamide-for-solid-tumors-in-pediatric-and-young-adult-patients
#9
Nicolas J Llosa, Kenneth R Cooke, Allen Chen, Christopher Gamper, Orly Klein, Elias Zambidis, Brandon Luber, Gary Rosner, Nicholas Siegel, Mary Jo Holuba, Nancy Robey, Masanori Hayashi, Richard J Jones, Ephraim Fuchs, Matthias Holdhoff, David M Loeb, Heather J Symons
High risk, recurrent, or refractory solid tumors in pediatric, adolescent and young adult (AYA) patients have an extremely poor prognosis despite current intensive treatment regimens. We piloted an allogeneic bone marrow transplant (alloBMT) platform using a reduced intensity conditioning (RIC) and partially HLA-mismatched (haploidentical) related donors for this population of pediatric and AYA solid tumor patients. Sixteen patients received a fludarabine, cyclophosphamide (Cy), melphalan and low dose total body irradiation (TBI) RIC haploidentical BMT (haploBMT) followed by post-transplantation cyclophosphamide (PTCy), mycophenolate mofetil (MMF) and sirolimus...
August 11, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28801357/the-autoimmune-risk-variant-ptpn22-c1858t-alters-b-cell-tolerance-at-discrete-checkpoints-and-differentially-shapes-the-naive-repertoire
#10
Genita Metzler, Xuezhi Dai, Christopher D Thouvenel, Socheath Khim, Tania Habib, Jane H Buckner, David J Rawlings
A common genetic variant in the gene encoding the protein tyrosine phosphatase nonreceptor type 22 (PTPN22 C1858T) has been linked to a wide range of autoimmune disorders. Although a B cell-intrinsic role in promoting disease has been reported, the mechanism(s) through which this variant functions to alter the preimmune B cell repertoire remains unknown. Using a series of polyclonal and transgenic self-reactive models harboring the analogous mutation in murine Ptpn22, we show evidence for enhanced BCR, B cell-activating factor receptor, and CD40 coreceptor programs, leading to broadly enhanced positive selection of B cells at two discrete checkpoints in the bone marrow and spleen...
August 11, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28800970/guidelines-of-the-brazilian-society-of-rheumatology-for-the-diagnosis-and-treatment-of-osteoporosis-in-men
#11
REVIEW
Marco Antônio R Loures, Cristiano Augusto F Zerbini, Jaime S Danowski, Rosa Maria R Pereira, Caio Moreira, Ana Patrícia de Paula, Charlles Heldan M Castro, Vera Lucia Szenjenfeld, Laura Maria C Mendonça, Sebastião C Radominiski, Mailze C Bezerra, Ricardo Simões, Wanderley M Bernardo
Osteoporosis, a metabolic disease characterized by low bone mass, deterioration of the bone tissue microarchitecture and increased susceptibility to fractures, is commonly regarded as a women's health problem. This point of view is based on the fact that compared with men, women have lower bone mineral density and longer lifespans and lose bone mass faster, especially after menopause, due to a marked decrease in serum estrogen levels. However, in the last 20 years, osteoporosis in men has become recognized as a public health problem due to the occurrence of an increasingly higher number of fragility fractures...
August 8, 2017: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28800919/similar-outcomes-after-osteochondral-allograft-transplantation-in-anterior-cruciate-ligament-intact-and-reconstructed-knees-a-comparative-matched-group-analysis-with-minimum-2-year-follow-up
#12
Dean Wang, Claire D Eliasburg, Tim Wang, Ryan R Fader, Francesca R Coxe, Mollyann D Pais, Riley J Williams
PURPOSE: To compare failure rates and clinical outcomes of osteochondral allograft transplantation (OCA) in anterior cruciate ligament (ACL)-intact versus ACL-reconstructed knees at midterm follow-up. METHODS: After a priori power analysis, a prospective registry of patients treated with OCA for focal chondral lesions ≥2 cm(2) in size with minimum 2-year follow-up was used to match ACL-reconstructed knees with ACL-intact knees by age, sex, and primary chondral defect location...
August 8, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28799451/radiological-clinical-and-audiological-evaluation-of-jugular-bulb-vestibular-aqueduct-dehiscence
#13
Asli Tanrivermis Sayit, Muzaffer Elmali, Ozgur Kemal, Yuksel Terzi
OBJECTIVE: The aim of this study is to determine the prevalence of jugular bulb-vestibular aqueduct dehiscence (JBVAD) in patients undergoing temporal bone multidetector computed tomography (MDCT) and assess the relationship between JBVAD and hearing loss with the findings of audiometry. METHODS: About 1503 temporal bone MDCT scans were evaluated for the prevalence of JBVAD. Correlation of the imaging findings and audiometric data was performed. Patients were divided into two groups, those with and those without hearing loss, and were statistically compared...
August 11, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28799140/management-of-labyrinthine-fistula-hearing-preservation-versus-prevention-of-residual-disease
#14
S Geerse, M J F de Wolf, F A Ebbens, E van Spronsen
The objective of the study was to evaluate postoperative hearing and disease control after cholesteatoma surgery for labyrinthine fistulas. In a retrospective cohort study, we evaluated a consecutive cohort comprising 44 patients (45 ears) with labyrinthine fistulas associated with chronic otitis media with cholesteatoma who underwent surgery between 2002 and 2015. We looked at patient characteristics, pre- and postoperative bone conduction thresholds (BCT), operative approach and findings, extent of disease and the occurrence of residual disease...
August 10, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28797779/long-term-outcomes-of-cord-blood-transplantation-from-an-hla-identical-sibling-for-patients-with-bone-marrow-failure-disorders-a-report-from-eurocord-cord-blood-committee-cbc-ctiwp-and-severe-aplastic-anemia-working-party-saawp-of-the-european-society-of-blood
#15
Simona Pagliuca, Régis Peffault de Latour, Fernanda Volt, Franco Locatelli, Marco Zecca, Jean-Hugues Dalle, Patrizia Comoli, Kim Vettenranta, Miguel Angel Diaz, Or Reuven, Yves Bertrand, Cristina Diaz de Heredia, Arnon Nagler, Ardeshir Ghavamzadeh, Sabina Sufliarska, Sarah Lawson, Chantal Kenzey, Vanderson Rocha, Carlo Dufour, Eliane Gluckman, Jakob Passweg, Annalisa Ruggeri
Cord blood transplantation (CBT) from HLA-identical sibling is an attractive option for patients with bone-marrow-failures syndromes (BMF), due to the low risk of graft-versus-host disease (GVHD) and the absence of risk to the donor. We analyzed outcomes of 117 patients with inherited or acquired BMF, who received CBT from a related HLA-identical donor in EBMT centers, between 1988 and 2014. Ninety-seven patients had inherited and 20 patients acquired BMF. Eighty-two patients received a single cord blood (CB) unit, whereas 35 patients received a combination of CB and bone marrow (BM) cells from the same donor...
August 7, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28797001/scintigraphic-patterns-of-indium-111-oxine-white-blood-cell-imaging-of-gram-negative-versus-gram-positive-vertebral-osteomyelitis
#16
Abdelhamid H Elgazzar, Shorouk Dannoon, Ismet Sarikaya, Medhat Farghali, Thamradeen A Junaid
OBJECTIVE: The goal of the study was to investigate whether or not Gram-negative organisms that secret anti-chemotactic factors caused the non-accumulation pattern of 111In-oxine-labeled white blood cell (111In WBC) scan. MATERIALS AND METHODS: Staphylococcus aureus (Gram-positive) (group 1) was injected into 25 rabbits and Escherichia coli (Gram-negative) (group 2) to another 25 to induce infection in the lumbar vertebrae or left thigh bone (femur). Sixteen rabbits of each group that were successfully infected surviving rabbits were used for imaging and analysis...
August 8, 2017: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/28793284/growth-hormone-therapy-in-children-with-kabuki-syndrome-1-year-treatment-results
#17
Dina A Schott, Willem J M Gerver, Constance T R M Stumpel
BACKGROUND/AIMS: Kabuki syndrome (KS) is a rare genetic malformation syndrome, resulting in characteristic features such as short stature. We investigate whether growth hormone (GH) treatment increases linear height and influences body proportions in KS children. METHODS: In this prospective study, 18 genetically confirmed prepubertal KS children (9 females and 9 males) aged from 3.8 to 10.1 years (mean 6.8 ± 2.1 years) were treated with recombinant human GH (rhGH) for 1 year...
August 9, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28792082/rotator-cuff-healing-using-demineralized-cancellous-bone-matrix-sponge-interposition-compared-to-standard-repair-in-a-preclinical-canine-model
#18
Matthew J Smith, Ferris M Pfeiffer, Cristi R Cook, Keiichi Kuroki, James L Cook
This Level II study assessed clinically relevant outcomes for repair of large, retracted infraspinatus tendons (ISTs) using a demineralized bone matrix (DBM) sponge (FlexiGraft) hydrated in platelet-rich plasma (PRP) versus direct repair in a validated canine model. Adult research dogs (n = 10) were used. The IST was transected in each shoulder (n = 20) and randomized to direct repair or repair with DBM-PRP interposition at 4 weeks posttransection. At 12 weeks postrepair, dogs were sacrificed, and the repair evaluated by magnetic resonance imaging (MRI), histology, and biomechanical testing...
August 9, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28791124/combining-dendritic-cells-and-b-cells-for-presentation-of-oxidised-tumour-antigens-to-cd8-t-cells
#19
Melanie L Grant, Nicholas Shields, Silke Neumann, Katrin Kramer, Andrea Bonato, Christopher Jackson, Margaret A Baird, Sarah L Young
The dendritic cell (DC) is the foremost antigen-presenting cell (APC) for ex vivo expansion of tumour-specific patient T cells. Despite marked responses in some patients following reinfusion of DC-activated autologous or HLA-matched donor T cells, overall response rates remain modest in solid tumours. Furthermore, most studies aim to generate immune responses against defined tumour-associated antigens (TAA), however, meta-analysis reveals that those approaches have less clinical success than those using whole tumour cells or their components...
July 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28790467/current-concepts-in-acetabular-positioning-in-total-hip-arthroplasty
#20
Deepu Bhaskar, Asim Rajpura, Tim Board
Being one of the most successful surgeries in the history of medicine, the indications for total hip arthroplasty have widened and are increasingly being offered to younger and fitter patients. This has also led to high expectations for longevity and outcomes. Acetabular cup position has a significant impact on the results of hip arthroplasty as it affects dislocation, abductor muscle strength, gait, limb lengths, impingement, noise generation, range of motion (ROM), wear, loosening, and cup failure. The variables in cup position are depth, height, and angular position (anteversion and inclination)...
July 2017: Indian Journal of Orthopaedics
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