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https://www.readbyqxmd.com/read/28222045/validation-of-scaffold-design-optimization-in-bone-tissue-engineering-finite-element-modeling-versus-designed-experiments
#1
Nicholas Uth, Jens Mueller, Byran Smucker, Azizeh-Mitra Yousefi
This study reports the development of biological/synthetic scaffolds for bone tissue engineering (TE) via 3D bioplotting. These scaffolds were composed of poly(L-lactic-co-glycolic acid) (PLGA), type I collagen, and nano-hydroxyapatite (nHA) in an attempt to mimic the extracellular matrix of bone. The solvent used for processing the scaffolds was 1,1,1,3,3,3-hexafluoro-2-propanol. The produced scaffolds were characterized by scanning electron microscopy, microcomputed tomography, thermogravimetric analysis, and unconfined compression test...
February 21, 2017: Biofabrication
https://www.readbyqxmd.com/read/28219836/donor-lymphocyte-infusion-for-relapsed-hematological-malignancies-after-unrelated-allogeneic-bone-marrow-transplantation-facilitated-by-the-japan-marrow-donor-program
#2
Toshihiro Miyamoto, Takahiro Fukuda, Marie Nakashima, Tomoko Henzan, Shinsuke Kusakabe, Naoki Kobayashi, Junichi Sugita, Takeshi Mori, Mineo Kurokawa, Shin-Ichiro Mori
To evaluate the safety and efficacy of donor lymphocyte infusion (DLI), we retrospectively analyzed 414 recipients who received unrelated DLI (UDLI) for the treatment of relapsed hematological malignancy after unrelated bone marrow transplantation (BMT). UDLI was administered for acute myelogenous leukemia (n=184), myelodysplastic syndrome (n=69), acute lymphocytic leukemia (n=57), chronic myelogenous leukemia (CML, n=36), lymphoid neoplasms (n=38), adult T-cell leukemia/lymphoma (n=18), and multiple myeloma (n=12)...
February 17, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28219835/marked-in-vivo-donor-treg-expansion-via-il-2-and-tl1a-ig-stimulation-ameliorates-gvhd-but-preserves-gvl-in-recipients-post-hsct
#3
Dietlinde Wolf, Henry Barreras, Cameron S Bader, Sabrina Copsel, Casey O Lightbourn, Brent J Pfeiffer, Norman H Altman, Eckhard R Podack, Krishna V Komanduri, Robert B Levy
Regulatory T cells (Tregs) are critical for self-tolerance. While adoptive transfer of expanded Tregs limits graft-versus-host disease (GVHD) after hematopoietic cell transplantation (HCT), ex vivo generation of large numbers of functional Tregs remains difficult. Here, we demonstrate that in vivo targeting of the TNF superfamily receptor TNFRSF25 using the TL1A-Ig fusion protein, along with IL-2, resulted in transient but massive Treg expansion in donor mice, which peaked within days and was nontoxic. Tregs increased in multiple compartments, including blood, lymph nodes, spleen and colon (a GVHD target tissue)...
February 17, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28219477/autologous-incus-versus-titanium-partial-ossicular-replacement-prosthesis-in-reconstruction-of-austin-type-a-ossicular-defects-a-prospective-randomised-clinical-trial
#4
Amith Naragund, R S Mudhol
OBJECTIVE: This study aimed to compare the functional and anatomical outcomes of ossiculoplasty using an autograft incus or a titanium partial ossicular replacement prosthesis for reconstructing Austin type A ossicular defects. METHODS: Patients with Austin A ossicular defects were randomly divided into two groups: one group underwent ossiculoplasty with an autologous incus (the autologous incus group) and the other underwent ossiculoplasty with a titanium partial ossicular replacement prosthesis (the titanium prosthesis group)...
February 21, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28218751/scleral-lenses-for-severe-chronic-gvhd-related-keratoconjunctivitis-sicca-a-retrospective-study-by-the-sfgm-tc
#5
L Magro, J Gauthier, M Richet, M Robin, S Nguyen, F Suarez, J-H Dalle, T Fagot, A Huynh, M-T Rubio, R Oumadely, S Vigouroux, N Milpied, A Delcampe, I Yakoub-Agha
Chronic GvHD-related keratoconjunctivitis sicca (cGvHD-related KCS) can significantly alter the quality of life of patients after allogeneic hematopoietic stem cell transplantation. The aim of this work was to assess the efficacy and tolerability of scleral lenses to treat severe cGvHD-related KCS. In this retrospective, multicenter study, we included 60 consecutive patients diagnosed with cGvHD-related KCS and fitted with scleral lenses. Patients were evaluated at baseline and at 2 months with the following tests: the Ocular Surface Disease Index (OSDI) to assess quality of life, the Oxford score to grade corneal damage and the logarithm of minimal angle of resolution (Log MAR) scale to determine visual acuity...
February 20, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28217782/receptor-for-hyaluronan-mediated-motility-rhamm-hmmr-is-a-novel-target-for-promoting-subcutaneous-adipogenesis
#6
S B Bahrami, C Tolg, T Peart, C Symonette, M Veiseh, J U Umoh, D W Holdsworth, J B McCarthy, L G Luyt, M J Bissell, A Yazdani, E A Turley
Hyaluronan, CD44 and the Receptor for Hyaluronan-Mediated Motility (RHAMM, gene name HMMR) regulate stem cell differentiation including mesenchymal progenitor differentiation. Here, we show that CD44 expression is required for subcutaneous adipogenesis, whereas RHAMM expression suppresses this process. We designed RHAMM function blocking peptides to promote subcutaneous adipogenesis as a clinical and tissue engineering tool. Adipogenic RHAMM peptides were identified by screening for their ability to promote adipogenesis in culture assays using rat bone marrow mesenchymal stem cells, mouse pre-adipocyte cell lines and primary human subcutaneous pre-adipocytes...
February 20, 2017: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/28215637/polyglycolic-acid-sheet-attached-with-fibrin-glue-can-facilitate-faster-epithelialization-of-the-mastoid-cavity-after-canal-wall-down-tympanoplasty
#7
Taisuke Kobayashi, Kiyofumi Gyo, Masahiro Komori, Masamitsu Hyodo
OBJECTIVE: This study retrospectively investigated whether polyglycolic acid (PGA) sheet attached to the bone surface using fibrin glue facilitate faster epithelialization of the mastoid bowl after canal wall-down (CWD) tympanoplasty compared to a simple dressing using poly-N-acetyl-glucosamine (Kichin) sheet. MATERIALS AND METHODS: After completion of the CWD tympanoplasty, PGA sheet (n=16, PGA group) with fibrin glue or Kichin sheet (n=38, Kichin group) were placed on the bone surface of the mastoid bowl...
February 16, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28213848/intraoperative-blood-pressure-changes-during-cemented-versus-uncemented-bipolar-hemiarthroplasty-for-displaced-femoral-neck-fracture-a-multi-center-cohort-study-the-effect-of-bone-cement-for-bipolar-hemiarthroplasty-in-elderly-patients
#8
Shuichi Miyamoto, Junichi Nakamura, Satoshi Iida, Tomonori Shigemura, Shunji Kishida, Isao Abe, Munenori Takeshita, Yoshitada Harada, Sumihisa Orita, Seiji Ohtori
INTRODUCTION: The purpose of this study was to compare the cemented bipolar hemiarthroplasty with uncemented about the change of intraoperative blood pressure and the incidence of major complications in elderly patients with femoral neck fracture. MATERIALS AND METHODS: This multiple center prospective cohort study included only patients with acute displaced femoral neck fracture (Garden stage III or IV). All patients were treated with cemented or uncemented bipolar hemiarthroplasty using modified Hardinge or Watson-Jones approach in the lateral decubitus position...
February 17, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28212661/partial-versus-early-full-weight-bearing-after-uncemented-total-hip-arthroplasty-a-meta-analysis
#9
Peng Tian, Zhi-Jun Li, Gui-Jun Xu, Xiao-Lei Sun, Xin-Long Ma
BACKGROUND: This meta-analysis aimed to investigate the efficacy and safety of partial weight bearing (PWB) versus early full weight bearing (FWB) after uncemented total hip arthroplasty (THA). METHODS: We conducted a search in PubMed, EMBASE, The Cochrane Library, and Web of Science for randomized controlled trials (RCTs) and non-RCTs comparing PWB and early FWB after uncemented THA. Two authors conducted the selection of studies, data extraction, and assessment of risk of bias independently...
February 17, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28212373/poly-adp-ribose-polymerase-1-mrna-levels-strongly-correlate-with-the-prognosis-of-myelodysplastic-syndromes
#10
P Diamantopoulos, K Zervakis, P Zervakis, M Sofotasiou, T Vassilakopoulos, I Kotsianidis, A Symeonidis, V Pappa, A Galanopoulos, E Solomou, E Kodandreopoulou, V Papadopoulou, P Korkolopoulou, M Mantzourani, G Kyriakakis, N-A Viniou
Poly (ADP-ribose) polymerase 1 (PARP-1) has a central role in the repair of DNA breaks and is a promising treatment target in malignancy. We measured PARP1 mRNA levels by a SYBR-green-based PCR in the bone marrow of 74 patients with myelodysplastic syndrome (MDS) and correlated them to their demographic, hematologic and prognostic characteristics. The median PARP1 mRNA levels were correlated to the type of MDS (2008/2016 WHO classification, P=0.005) and to the IPSS score (P=0.002). A correlation was also found with the IPSS-R score (P=0...
February 17, 2017: Blood Cancer Journal
https://www.readbyqxmd.com/read/28212292/azacitidine-for-front-line-therapy-of-patients-with-aml-reproducible-efficacy-established-by-direct-comparison-of-international-phase-3-trial-data-with-registry-data-from-the-austrian-azacitidine-registry-of-the-agmt-study-group
#11
Lisa Pleyer, Hartmut Döhner, Hervé Dombret, John F Seymour, Andre C Schuh, C L Beach, Arlene S Swern, Sonja Burgstaller, Reinhard Stauder, Michael Girschikofsky, Heinz Sill, Konstantin Schlick, Josef Thaler, Britta Halter, Sigrid Machherndl Spandl, Armin Zebisch, Angelika Pichler, Michael Pfeilstöcker, Eva M Autzinger, Alois Lang, Klaus Geissler, Daniela Voskova, Wolfgang R Sperr, Sabine Hojas, Inga M Rogulj, Johannes Andel, Richard Greil
We recently published a clinically-meaningful improvement in median overall survival (OS) for patients with acute myeloid leukaemia (AML), >30% bone marrow (BM) blasts and white blood cell (WBC) count ≤15 G/L, treated with front-line azacitidine versus conventional care regimens within a phase 3 clinical trial (AZA-AML-001; NCT01074047; registered: February 2010). As results obtained in clinical trials are facing increased pressure to be confirmed by real-world data, we aimed to test whether data obtained in the AZA-AML-001 trial accurately represent observations made in routine clinical practice by analysing additional AML patients treated with azacitidine front-line within the Austrian Azacitidine Registry (AAR; NCT01595295; registered: May 2012) and directly comparing patient-level data of both cohorts...
February 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28210646/pain-assessment-after-anterior-cruciate-ligament-reconstruction-bone-patellar-tendon-bone-versus-hamstring-tendon-autograft
#12
Kelechi R Okoroha, Robert A Keller, Edward K Jung, Lafi Khalil, Nathan Marshall, Patricia A Kolowich, Vasilios Moutzouros
BACKGROUND: Anterior cruciate ligament (ACL) reconstruction is a common outpatient procedure that is accompanied by significant postoperative pain. PURPOSE: To determine differences in acute pain levels between patients undergoing ACL reconstruction with bone-patellar tendon-bone (BTB) versus hamstring tendon (HS) autograft. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: A total of 70 patients who underwent primary ACL reconstruction using either BTB or HS autografts consented to participate...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28209352/no-differences-were-observed-when-comparing-survival-and-marginal-bone-level-of-short-versus-long-implants-after-3-years
#13
Romina Brignardello-Petersen
No abstract text is available yet for this article.
February 13, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28207468/significant-differences-in-the-bone-of-an-isogenic-inbred-versus-nonisogenic-outbred-murine-mandible-a-study-in-rigor-and-reproducibility
#14
Edward G Carey, Sagar S Deshpande, Kevin M Urlaub, Alexander R Zheutlin, Noah S Nelson, Alexis Donneys, Stephen Y Kang, Kathleen K Gallagher, Peter A Felice, Catherine N Tchanque-Fossuo, Steven R Buchman
Inattention to differences between animal strains is a potential cause of irreproducibility of basic science investigations. Accordingly, the authors' laboratory sought to ensure that cross-comparisons of results generated from studies of mandibular physiology utilizing the Sprague Dawley and Lewis rat strains are valid. The authors specifically investigated baseline histomorphometrics, bone mineral density, and biomechanical strength of the unaltered endogenous mandibles of the inbred, isogenic Lewis rat, and the outbred, nonisogenic Sprague Dawley rat to determine if they are indeed equal...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28205075/hamstring-autograft-versus-patellar-tendon-autograft-for-acl-reconstruction-is-there-a-difference-in-graft-failure-rate-a-meta-analysis-of-47-613-patients
#15
Brian T Samuelsen, Kate E Webster, Nick R Johnson, Timothy E Hewett, Aaron J Krych
BACKGROUND: Bone-patellar tendon-bone (bone-tendon-bone) and four-strand hamstring tendon grafts (hamstring) are the most commonly utilized autografts for primary anterior cruciate ligament (ACL) reconstruction. Existing clinical trials, registry studies, and meta-analyses offer conflicting opinions regarding the most favorable graft choice. QUESTIONS/PURPOSES: Which graft type for ACL reconstruction (bone-tendon-bone or hamstring) has a higher risk of (1) graft rupture and/or (2) graft laxity? METHODS: We performed a meta-analysis of randomized controlled trials (RCTs), prospective cohort studies, and high-quality national registry studies to compare the outcomes of primary ACL reconstruction with bone-tendon-bone autograft or hamstring autograft...
February 15, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28201977/targeting-the-immune-niche-within-the-bone-marrow-microenvironment-the-rise-of-immunotherapy-in-multiple-myeloma
#16
Klaus Podar, D Jäger
Multiple Myeloma (MM) cells inhibit the development of an effective anti-MM immune response via defects in T cell function, ineffective antigen presentation; reduced phagocytic capacity; natural killer and dendritic cell dysfunction; decreased responsiveness to IL-2 and defects in B cell immunity; upregulation of inhibitory pathways; and production of excessive pro-inflammatory cytokines. Moreover, immune cells including plasmacytoid dendritic cells and macrophages trigger tumor cell proliferation, survival, and drug resistance...
February 13, 2017: Current Cancer Drug Targets
https://www.readbyqxmd.com/read/28198767/anti-gal-and-anti-neu5gc-responses-in-nonimmunosuppressed-patients-following-treatment-with-rabbit-anti-thymocyte-polyclonal-iggs
#17
Apolline Salama, Gwénaëlle Evanno, Noha Lim, Juliette Rousse, Ludmilla Le Berre, Arnaud Nicot, Sophie Brouard, Kristina M Harris, Mario R Ehlers, Stephen E Gitelman, Jean-Paul Soulillou
BACKGROUND: Polyclonal anti-human thymocyte rabbit IgGs (anti-thymocyte globulin, ATG) are popular immunosuppressive drugs used to prevent or treat organ or bone-marrow allograft rejection, graft versus host disease, and autoimmune diseases. However, animal-derived glycoproteins are also strongly immunogenic and rabbit ATG induces serum sickness disease in almost all patients without additional immunosuppressive drugs, as seen in the START trial of ATG therapy in new-onset type 1 diabetes...
February 14, 2017: Transplantation
https://www.readbyqxmd.com/read/28196278/carbon-fiber-vs-metal-framework-in-full-arch-immediate-loading-rehabilitations-of-the-maxilla-a-cohort-clinical-study
#18
Francesco Pera, Paolo Pesce, Francesco Solimano, Tiziano Tealdo, Paolo Pera, Maria Menini
BACKGROUND: Frameworks made of carbon fiber reinforced composites (CFRC) seem to be a viable alternative to traditional metal frameworks in implant prosthodontics. CFRC provide stiffness, rigidity and optimal biocompatibility. OBJECTIVE: The aim of the present prospective study was to compare carbon fiber frameworks versus metal frameworks used to rigidly splint implants in full-arch immediate loading rehabilitations. METHODS: 42 patients (test group) were rehabilitated with full-arch immediate loading rehabilitations of the upper jaw (total: 170 implants) following the Columbus Bridge Protocol with 4 to 6 implants with distal tilted implants...
February 14, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28192527/the-efficacy-of-a-scaffold-free-bio-3d-conduit-developed-from-human-fibroblasts-on-peripheral-nerve-regeneration-in-a-rat-sciatic-nerve-model
#19
Hirofumi Yurie, Ryosuke Ikeguchi, Tomoki Aoyama, Yukitoshi Kaizawa, Junichi Tajino, Akira Ito, Souichi Ohta, Hiroki Oda, Hisataka Takeuchi, Shizuka Akieda, Manami Tsuji, Koichi Nakayama, Shuichi Matsuda
BACKGROUND: Although autologous nerve grafting is the gold standard treatment of peripheral nerve injuries, several alternative methods have been developed, including nerve conduits that use supportive cells. However, the seeding efficacy and viability of supportive cells injected in nerve grafts remain unclear. Here, we focused on a novel completely biological, tissue-engineered, scaffold-free conduit. METHODS: We developed six scaffold-free conduits from human normal dermal fibroblasts using a Bio 3D Printer...
2017: PloS One
https://www.readbyqxmd.com/read/28192120/osteopontin-attenuates-acute-gastrointestinal-graft-versus-host-disease-by-preventing-apoptosis-of-intestinal-epithelial-cells
#20
Kentaro Kawakami, Naoki Minami, Minoru Matsuura, Tomoya Iida, Takahiko Toyonaga, Kanna Nagaishi, Yoshiaki Arimura, Mineko Fujimiya, Toshimitsu Uede, Hiroshi Nakase
BACKGROUND AND AIMS: Acute graft-versus-host disease (GVHD) is a major complication after allogeneic hematopoietic stem cell transplantation, which often targets gastrointestinal (GI) tract. Osteopontin (OPN) plays an important physiological role in the efficient development of Th1 immune responses and cell survival by inhibiting apoptosis. The role of OPN in acute GI-GVHD is poorly understood. In the present study, we investigated the role of OPN in donor T cells in the pathogenicity of acute GI-GVHD...
February 9, 2017: Biochemical and Biophysical Research Communications
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