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https://www.readbyqxmd.com/read/29156851/cartilage-reinforcement-graft-versus-fascia-graft-in-tympanoplasty
#1
Emre Ocak, Süha Beton, Vedat Taş, Cem Meço
Background/aim: The purpose of this study was to compare cartilage reinforcement graft results with temporalis fascia graft alone in terms of hearing and anatomical outcomes in tympanoplasty. Materials and methods: Patients who underwent tympanoplasty with/without ossiculoplasty and/or mastoidectomy at a university hospital from 2006 through 2013 were reviewed retrospectively. The patients were divided into those grafted with temporalis muscle fascia alone and with fascia reinforced with cartilage. The postoperative air bone gap, gain in hearing thresholds, and graft status were evaluated for each group...
August 23, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29156497/melanoma-in-patients-with-gata2-deficiency
#2
Jannett Nguyen, Tiffany Alexander, Hong Jiang, Natasha Hill, Zied Abdullaev, Svetlana D Pack, Amy P Hsu, Steven M Holland, Dennis D Hickstein, Eric A Engels, Isaac Brownell
GATA2 deficiency is a recently described genetic disorder affecting hematopoietic stem cells and is associated with immunodeficiency, cutaneous findings, and hematologic malignancy. The risk of non-hematologic malignancies is unclear. To explore the incidence and clinical course of melanoma in GATA2 deficient patients we conducted a retrospective chart review of 71 patients with GATA2 deficiency. We identified two patients with melanoma, including an invasive melanoma presenting as a graft-versus-tumor effect following bone marrow transplantation...
November 20, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/29155317/treosulfan-fludarabine-conditioning-for-hsct-in-children-with-primary-immunodeficiency-uk-experience
#3
Mary A Slatter, Kanchan Rao, Intan Juliana Abd Hamid, Zohreh Nademi, Robert Chiesa, Reem Elfeky, Mark S Pearce, Persis Amrolia, Austen Worth, Terence Flood, Mario Abinun, Sophie Hambleton, Waseem Qasim, Hubert B Gaspar, Andrew J Cant, Andrew R Gennery, Paul Veys
We previously published results of 70 children who received treosulfan with cyclophosphamide (30) or fludarabine (40) before haematopoietic stem cell transplantation (HSCT) for Primary Immunodeficiency (PID). Toxicity was lower and T cell chimerism better in those receiving fludarabine, but numbers were relatively small and follow-up short. We now report outcome of 160 children who received homogeneous conditioning with treosulfan, fludarabine mostly with alemtuzumab (n=124). Median age at transplant was 1...
November 16, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29155316/influence-of-age-on-acute-and-chronic-gvhd-in-children-receiving-hla-identical-sibling-bmt-for-acute-leukemia-implications-for-prophylaxis
#4
Muna Qayed, Tao Wang, Michael T Hemmer, Stephen Spellman, Mukta Arora, Daniel Couriel, Amin Alousi, Joseph Pidala, Hisham Abdel-Azim, Mahmoud Aljuf, Mouhab Ayas, Menachem Bitan, Mitchell Cairo, Sung Won Choi, Christopher Dandoy, David Delgado, Robert Peter Gale, Gregory Hale, Haydar Frangoul, Rammurti T Kamble, Mohamed Kharfan-Dabaja, Leslie Lehman, John Levine, Margaret MacMillan, David I Marks, Taiga Nishihori, Richard F Olsson, Peiman Hematti, Olov Ringden, Ayman Saad, Prakash Satwani, Bipin N Savani, Kirk R Schultz, Sachiko Seo, Shalini Shenoy, Edmund K Waller, Lolie Yu, Mary M Horowitz, John Horan
Relapse remains the major cause of mortality post hematopoietic cell transplantation (HCT) for pediatric acute leukemia. Previous research suggests that reducing the intensity of calcineurin inhibitor based graft versus host disease (GVHD) prophylaxis may be an effective strategy in abrogating the risk of relapse in pediatric patients undergoing matched sibling donor (MSD) HCT. We reasoned that benefits of this strategy could be maximized by selectively applying it to those patients least likely to develop GVHD...
November 16, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29155001/postoperative-pain-following-posterior-iliac-crest-bone-graft-harvesting-in-spine-surgery-a-prospective-randomized-trial
#5
Evan D Sheha, Dennis S Meredith, Grant D Shifflett, Benjamin T Bjerke, Sravisht Iyer, Jennifer Shue, Joseph Nguyen, Russel C Huang
BACKGROUND CONTEXT: Post-operative pain at the site of bone graft harvest for posterior spine fusion is reported to occur in 6% to 39% of cases. However, the area around the posterior, superior iliac spine is a frequent site of referred pain for many structures. Therefore, many postoperative spine patients may have pain in the vicinity of the posterior iliac crest that may not in fact be caused by bone graft harvesting. The literature may then overestimate the true incidence of postoperative iliac crest pain...
November 14, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29154231/avascular-necrosis-of-femoral-condyles-in-a-patient-treated-due-to-lymphoma-a-case-study
#6
Kamil Graboń, Łukasz Paczesny, Jacek Kruczyński
Periarticular avascular osteonecrosis is one of the most severe joint diseases and may result in complete joint destruction. It may affect patients after chemotherapy involving regimens including steroids. The paper describes the case of a female patient who was just under 18 years old when she underwent surgery due to bilateral osteonecrosis of the femoral condyles that developed in the course of treatment of a haematological malignancy. The aim of the paper is to present clinical and imaging-based assessment of the outcome of surgical treatment by reconstruction of osteochondral joint defects with a collagen membrane and bone grafts...
October 31, 2017: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/29153632/a-2-to-16-year-clinical-follow-up-of-revision-total-hip-arthroplasty-using-a-new-acetabular-implant-combined-with-impacted-bone-allografts-and-a-cemented-cup
#7
Hampus Stigbrand, Oscar Gustafsson, Gösta Ullmark
BACKGROUND: Treatment of acetabular bone loss with impaction bone grafting (IBG) at revision total hip arthroplasty is highly dependent on mechanical stability and graft compression for clinical success. Here, we describe a new technique to further compress and stabilize the acetabular graft bed with a thin, perforated titanium shell. METHODS: We retrospectively analyzed 170 cases of acetabular revision arthroplasty 7 years (standard deviation 2.8) after IBG combined with a graft-compressing titanium shell implant...
October 10, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29153311/two-versus-three-day-upfront-use-of-granulocyte-colony-stimulating-factor-in-healthy-bone-marrow-donors-for-pediatric-bone-marrow-transplantation
#8
REVIEW
Tekin Aksu, İkbal Ok Bozkaya, Sibel Akpınar Tekgündüz, Mehtap Olcar Kanbur, Yasin Köksal, Meltem Özgüner, Namık Yaşar Özbek
In order to decrease donors' exposure to granulocyte-colony stimulating factor (G-CSF), we compared the effect of two versus three days of G-CSF priming on CD34+ yield in bone marrow (BM) harvest. Although the number of BM-CD34+ cells was higher in 3day G-CSF priming, we achieved the same number of CD34+ cells per recipient's weight in 2day G-CSF priming group, too. In addition, the number of total nucleated cells (TNC) harvested from BM were similar with two or three day regimen. But mononuclear cells (MNC) of the BM graft was higher in the 3day G-CSF priming group...
November 8, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29152660/therapeutic-effects-of-stat3-inhibition-by-nifuroxazide-on-murine-acute-graft-graft-vs-host-disease-old-drug-new-use
#9
Huijie Jia, Jing Cui, Xiaolong Jia, Jingjing Zhao, Yuchen Feng, Peijuan Zhao, Dan Zang, Jian Yu, Tiesuo Zhao, Hui Wang, Kailin Xu
Graft‑vs.‑host disease (GvHD) is a major and lethal complication of allogeneic bone marrow transplantation (allo‑BMT). Although great development has been made, the treatment progress of this disorder is slow. Research has illustrated that STAT3 was critical for T cell alloactivation in GvHD. In the present study, the authors hypothesized that nifuroxazide, as the STAT3 inhibitor, treatment may attenuate the development of acute GvHD (aGvHD). The results demonstrated that nifuroxazide suppressed the development of aGvHD and significantly delayed aGvHD‑induced lethality...
October 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29152301/persistence-of-bone-voids-after-calcaneal-bone-graft-harvest
#10
Eugene C Nwankwo, Jerry S Grimes
Objectives: The complications associated with iliac crest bone-graft harvest have resulted in the development of alternative harvest sites. Lower extremity alternative sites that have been reported for foot and ankle procedures include greater trochanter, proximal tibia, distal tibia, and calcaneus. These sites have been studied in terms of complications, postoperative pain, and quality of the harvested bone. The long-term effect of the harvest on the bone of the calcaneus has not been reported...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/29150957/randomized-controlled-clinical-two-center-study-using-xenogeneic-block-grafts-loaded-with-recombinant-human-bone-morphogenetic-protein-2-or-autogenous-bone-blocks-for-lateral-ridge-augmentation
#11
Daniel S Thoma, Michael Payer, Norbert Jakse, Stefan P Bienz, Jürg Hüsler, Patrick R Schmidlin, Ui-Won Jung, Christoph H F Hämmerle, Ronald E Jung
OBJECTIVES: to test whether or not the use of a xenogeneic block loaded with recombinant human bone morphogenetic protein-2 (rhBMP-2) results in different bone quantity and quality compared to an autogenous bone block. MATERIALS AND METHODS: 24 patients with insufficient bone volume for implant placement were randomly assigned to two treatment modalities: a xenogeneic bone block loaded with rhBMP-2 (test) or an autogenous bone block (control). The horizontal ridge width was evaluated prior to augmentation, after augmentation and at 4 months...
November 18, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29150694/inhibition-of-intimal-hyperplasia-in-murine-aortic-allografts-by-administration-of-a-small-molecule-tlr4-inhibitor-tak-242
#12
Chuangyan Wu, Xiangchao Ding, Cheng Zhou, Ping Ye, Yuan Sun, Jie Wu, Anchen Zhang, Xiaofan Huang, Lingyun Ren, Ke Wang, Peng Deng, Zhang Yue, Jiuling Chen, Sihua Wang, Jiahong Xia
Graft arteriosclerosis (GA) is the leading cause of late cardiac allograft dysfunction. The innate immune system plays a major role in GA, paprticularly Toll-like receptor 4 (TLR4) signaling. Here we characterized the role of TLR4 and its antagonist TAK-242 in a mouse model of GA. BALB/c (H-2d) donor aortas were transplanted into C57BL/6 (H-2b) recipients, and the mice received intraperitoneal injection of 3 or 10 mg/kg of TAK-242 or vehicle every other day for 1, 2, 4, 6, 8 and 12 weeks. With TAK-242 administration, intimal hyperplasia initially appeared at 2 weeks after transplantation, and TAK-242 postponed the progression of neointimal formation in allogeneic aortic grafts...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150107/pre-sarcopenia-and-bone-mineral-density-in-adults-submitted-to-hematopoietic-stem-cell-transplantation
#13
Cristiane Pavan Pereira, Denise Johnsson Campos Amaral, Vaneuza Araujo Moreira Funke, Victória Zeghbi Cochenski Borba
BACKGROUND: The aim of this study was to evaluate the prevalence of pre-sarcopenia and bone mineral density after hematopoietic stem cell transplantation. METHODS: The study group consisted of over 18-year-old patients who had been submitted to allogeneic transplantation at least one year previously. Patients and healthy controls were matched by sex, ethnic background, age, and body mass index. Body composition and bone mineral density were measured by dual-energy X-ray absorptiometry...
October 2017: Revista Brasileira de Hematologia e Hemoterapia
https://www.readbyqxmd.com/read/29149982/marrow-mesenchymal-stem-cells-effectively-reduce-histologic-changes-in-a-rat-model-of-chronic-renal-allograft-rejection
#14
P Yu, Z Wang, Y Liu, Z Xiao, Y Guo, M Li, M Zhao
BACKGROUND: Chronic allograft rejection remains as the leading cause of the chronic renal grafts loss post-transplantation. No therapy has been found really effective to prevent and treat chronic allograft rejection. Mesenchymal stem cells (MSCs) have characteristics of immunomodulation and are expected to be used for inducing graft immune tolerance in organ transplantation. We investigated the efficacy and safety of early infusion of donor-derived marrow MSCs in a rat model of chronic renal allograft rejection...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29148597/three-dimensional-analysis-of-bone-remodeling-following-ridge-augmentation-of-compromised-extraction-sockets-in-periodontitis-patients-a-randomized-controlled-study
#15
Mario Aimetti, Valeria Manavella, Lisa Corano, Elena Ercoli, Cristina Bignardi, Federica Romano
OBJECTIVES: The aim of this study was to analyze linear and volumetric hard tissue changes in severely resorbed alveolar sockets after ridge augmentation procedure and to compare them with spontaneous healing using three-dimensional cone beam computed tomography (CBCT). MATERIAL AND METHODS: Thirty patients (mean age 53.2 ± 6.3 years) requiring tooth extraction for advanced periodontitis were randomly allocated to test and control groups. The test sites were grafted using a collagenated bovine-derived bone (DBBM-C) covered with a collagen membrane, while control sites had spontaneous healing...
November 17, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29148018/lightbulb-technique-for-the-treatment-of-osteonecrosis-of-the-femoral-head
#16
Cemil Yildiz, Yusuf Erdem, Kenan Koca
INTRODUCTION: The aim of this study was to report the clinical and radiological outcomes for 21 patients (28 hips) treated for osteonecrosis of the femoral head using the lightbulb technique, a nonvascularised bone grafting technique. METHODS: The study group included 14 men and 7 women, with a mean age of 33.2 (range 22-50) years, presenting with avascular necrosis of the femoral head of stage 4a or earlier, according to the Steinberg classification. Patients were treated using the nonvascularised lightbulb bone grafting technique...
November 15, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29146221/takedown-of-ankle-arthrodesis-with-insufficient-fibula-surgical-technique-and-intermediate-term-follow-up
#17
John M Schuberth, Jeffrey C Christensen, Chad Seidenstricker
Conversion of ankle arthrodesis to total ankle arthroplasty has recently gained popularity. However, technical challenges are present when treating patients without a sufficient fibular buttress. We describe a technique for restoration of an adequate fibular buttress using an iliac crest bone graft or malleolar relocation. The results of 10 patients with an average follow-up period of 56 (range 24 to 123) months are presented. Of the 10 patients, 3 underwent tricortical iliac bone augmentation of the fibula, 4 underwent repositioning of the remnant fibula, and in 3, the in situ fibula was used...
November 14, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29146163/a-comparative-biomechanical-study-of-femoral-cortical-suspension-devices-for-soft-tissue-anterior-cruciate-ligament-reconstruction-adjustable-length-loop-versus-fixed-length-loop
#18
Moon Jong Chang, Tae Soo Bae, Young-Wan Moon, Jin Hwan Ahn, Joon Ho Wang
PURPOSE: To determine whether there are differences between adjustable-length loop and fixed-length loop devices in terms of the amount of displacement, temporal pattern of displacement, and ultimate failure load when tested using 4,500 cycles of sinusoidal loading with high loads (100-400 N). METHODS: Two cortical suspension devices with a fixed- or adjustable-length loop were tested. For our comparisons, a 20-mm fixed-length loop device and a fixed-length loop device with the same loop length were used...
November 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29145967/bone-intramedullary-reaming-grafts-the-fracture-site-with-cd146-skeletal-progenitors-and-downmodulates-the-inflammatory-environment
#19
Leonardo R Rocha, Rafaela C Sartore, Ana C Leal, Rhayra B Dias, Maria Eugenia L Duarte, João Antônio M Guimarães, Danielle C Bonfim
INTRODUCTION: Femoral shaft fractures generally occur in young adults following a high-energy trauma and are prone to delayed union/non-union. Novel therapies to stimulate bone regeneration will have to mimic some of the aspects of the biology of fracture healing; however, which are these aspects is unclear. Locked intramedullary nailing is the current treatment of choice for the stabilisation of femur shaft fractures, and it is associated with accelerated healing and increased union rates...
October 2017: Injury
https://www.readbyqxmd.com/read/29145437/assessment-of-the-suitability-of-biodegradable-rods-for-use-in-posterior-lumbar-fusion-an-in-vitro-biomechanical-evaluation-and-finite-element-analysis
#20
Fon-Yih Tsuang, Yueh-Ying Hsieh, Yi-Jie Kuo, Chia-Hsien Chen, Feng-Huei Lin, Chen-Sheng Chen, Chang-Jung Chiang
Interbody fusion with posterior instrumentation is a common method for treating lumbar degenerative disc diseases. However, the high rigidity of the fusion construct may produce abnormal stresses at the adjacent segment and lead to adjacent segment degeneration (ASD). As such, biodegradable implants are becoming more popular for use in orthopaedic surgery. These implants offer sufficient stability for fusion but at a reduced stiffness. Tailored to degrade over a specific timeframe, biodegradable implants could potentially mitigate the drawbacks of conventional stiff constructs and reduce the loading on adjacent segments...
2017: PloS One
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