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https://www.readbyqxmd.com/read/29779062/synthesis-and-characterization-of-silibinin-phenanthroline-neocuproine-copper-ii-complexes-for-augmenting-bone-tissue-regeneration-an-in-vitro-analysis
#1
Subramaniyam Rajalakshmi, Selvaraj Vimalraj, Sekaran Saravanan, Desingh Raj Preeth, Manickaraj Shairam, Dhanasekaran Anuradha
In the recent decades, flavonoid metal complexes have been widely investigated for their multifaceted role in enabling osteoblast differentiation and bone formation. Silibinin complexed with copper(II) ion has been synthesized along with two mixed ligand complexes, namely copper(II) silibinin-phenanthroline and neocuproine as co-ligands, and their positive role in promoting neovacularization and osteoblast differentiation was investigated. Silibinin mono complex [Cu(sil)(H2 O)2 ] and [Cu(sil)(phen)] showed similar UV-visible absorption in the region of 315 and 222 nm, whereas Cu(silibinin)(neocuproine) [Cu(sil)(neo)] showed a blueshift in the 320 nm transition...
May 19, 2018: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/29778007/augmentation-of-the-expression-of-the-eotaxin-receptor-on-duodenal-neutrophils-by-il-21
#2
Yuji Takeda, Tomoyuki Kato, Nobuhito Nemoto, Akemi Araki, Mohammad Yeashin Gazi, Hidetoshi Nara, Hironobu Asao
Inflammation can occur via different mechanisms, such as via acute and chronic responses, on numerous occasions and function accordingly through various roles. There are more than five subsets of neutrophils; neutrophilic heterogeneity is modulated by the inflammatory condition. To understand the characteristics of inflammation, identification of atypical neutrophils is important. In this study, we found that the expression of eotaxin receptor (CD193) on atypical neutrophils in the duodenum is augmented in IL-21 isoform transgenic (Tg) mice...
May 16, 2018: Cytokine
https://www.readbyqxmd.com/read/29777960/utility-of-cement-injection-to-stabilize-split-depression-tibial-plateau-fracture-by-minimally-invasive-methods-a-finite-element-analysis
#3
D Belaid, T Vendeuvre, A Bouchoucha, F Brémand, C Brèque, P Rigoard, A Germaneau
BACKGROUND: Treatment for fractures of the tibial plateau is in most cases carried out by stable fixation in order to allow early mobilization. Minimally invasive technologies such as tibioplasty or stabilization by locking plate, bone augmentation and cement filling (CF) have recently been used to treat this type of fracture. The aim of this paper was to determine the mechanical behavior of the tibial plateau by numerically modeling and by quantifying the mechanical effects on the tibia mechanical properties from injury healing...
May 8, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29772271/pain-management-after-bone-reconstruction-surgery-using-an-analgesic-bone-cement-a-functional-non-invasive-in-vivo-study-using-gait-analysis
#4
Manon Dupleichs, Martial Masson, Olivier Gauthier, Maeva Dutilleul, Jean-Michel Bouler, Elise Verron, Pascal Janvier
Postoperative pain following bone reconstruction is a serious complication that could jeopardize the global success of a surgery. This pain must be controlled and minimized during the first 3-4 postoperative days to prevent it from becoming chronic. In this study, a critical-size bone defect was created at the femoral distal end of rats and filled by an injectable calcium phosphate cement (CPC) loaded or not with local anesthetics (bupivacaine or ropivacaine). A functional evaluation of the gait was performed using the CatWalk system to compare the postoperative pain relief enhanced by the different CPCs after such a bone filling surgery...
May 14, 2018: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/29771732/maxillary-sinus-floor-augmentation-with-synthetic-bone-substitutes-compared-with-other-grafting-materials-a-systematic-review-and-meta-analysis
#5
Thomas Starch-Jensen, Arne Mordenfeld, Jonas Peter Becktor, Simon Storgård Jensen
OBJECTIVE: To test the hypotheses of no differences in implant treatment outcome after maxillary sinus floor augmentation (MSFA) with synthetic bone substitutes (SBS) compared with other grafting materials applying the lateral window technique. MATERIALS AND METHODS: A MEDLINE/PubMed, Embase and Cochrane Library search in combination with hand-search of selected journals was conducted. RESULTS: Five randomized controlled trials with low risk of bias fulfilled the inclusion criteria...
May 15, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29770578/effect-of-silicon-doped-calcium-phosphate-bone-grafting-materials-on-bone-regeneration-and-osteogenic-marker-expression-after-implantation-in-the-ovine-scapula
#6
Christine Knabe, Doaa Adel-Khattab, Wolf-Dietrich Hübner, Fabian Peters, Tom Knauf, Barbara Peleska, Dirk Barnewitz, Antje Genzel, Roderik Kusserow, Florian Sterzik, Michael Stiller, Christian Müller-Mai
Compared to the currently clinically available bone grafting materials for alveolar ridge augmentation, there is a great demand for bioactive bone substitutes with higher resorbability, which enhance osteogenesis at the same time. This has prompted the development of a silicon-doped rapidly resorbable calcium alkali orthophosphate (Si-CAOP) and silicon-doped β-tricalcium phosphate (Si-TCP). This study evaluated the effect of these two particulate graft materials as compared to the currently clinically used β-TCP on bone formation and osteogenic marker expression after 2 weeks, 1, 3, 6, 12, and 18 months of implantation in critical size defects in the sheep scapula...
May 16, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29766567/melatonin-attenuates-osteosarcoma-cell-invasion-by-suppression-of-c-c-motif-chemokine-ligand-24-through-inhibition-of-the-c-jun-n-terminal-kinase-pathway
#7
Ko-Hsiu Lu, Shih-Chi Su, Chiao-Wen Lin, Yi-Hsien Hsieh, Ya-Chiu Lin, Ming-Hsien Chien, Russel J Reiter, Shun-Fa Yang
Osteosarcoma, with its high metastatic potential, is the most prevalent malignant bone tumor in children and adolescents. Melatonin possesses multiple tumor-suppressing properties for a myriad of tumors, but little is known about the effects of melatonin on osteosarcoma metastasis. In this study, we demonstrated that melatonin elicited very low cytotoxicity and significantly inhibited cellular motility, migration, and invasion in human osteosarcoma U2OS and HOS cells. Moreover, using RNA sequencing technology, we revealed that melatonin repressed C-C motif chemokine ligand 24 (CCL24) gene expression in U2OS cells...
May 16, 2018: Journal of Pineal Research
https://www.readbyqxmd.com/read/29765377/neutrophils-inhibit-synthesis-of-mineralized-extracellular-matrix-by-human-bone-marrow-derived-stromal-cells-in-vitro
#8
Okan W Bastian, Michiel Croes, Jacqueline Alblas, Leo Koenderman, Luke P H Leenen, Taco J Blokhuis
Although controlled local inflammation is essential for adequate bone regeneration, several studies have shown that hyper-inflammatory conditions after major trauma are associated with impaired fracture healing. These hyper-inflammatory conditions include the trauma-induced systemic inflammatory response to major injury, open fractures, and significant injury to the surrounding soft tissues. The current literature suggests that increased or prolonged influx of neutrophils into the fracture hematoma may mediate impairment of bone regeneration after hyper-inflammatory conditions...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29763517/novel-engineered-tendon-fibrocartilage-bone-composite-with-cyclic-tension-for-rotator-cuff-repair
#9
Qian Liu, Taku Hatta, Jun Qi, Haoyu Liu, Andrew R Thoreson, Peter C Amadio, Steven L Moran, Scott P Steinmann, Anne Gingery, Chunfeng Zhao
Surgical repair of rotator cuff tears presents a significant clinical challenge with high failure rates and inferior functional outcomes. Graft augmentation improves repair outcomes, however currently available grafting materials have limitations. While cell-seeded decellularized tendon slices may facilitate cell infiltration, promote tendon incorporation and preserve original mechanical strength, the unique fibrocartilage zone is yet to be successfully reestablished. In this study, we investigated the biological and mechanical properties of an engineered tendon-fibrocartilage-bone composite (TFBC) with cyclic tension (3% strain, 0...
May 15, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29763503/clinical-performance-of-dental-implants-following-sinus-floor-augmentation-a-systematic-review-and-meta-analysis-of-clinical-trials-with-at-least-3-years-of-follow-up
#10
Georgios N Antonoglou, Andreas Stavropoulos, Maria D Samara, Alexis Ioannidis, Goran I Benic, Spyridon N Papageorgiou, George K Sándor
PURPOSE: The purpose of this systematic review was to assess the survival of implants placed in augmented sinuses on a medium- to long-term basis, and identify factors affecting implant survival such as surgical technique, bone grafts, and timing of implant placement. MATERIALS AND METHODS: A literature search up to July 2016 was performed to identify prospective clinical studies on sinus floor augmentation in conjunction with implant placement with a minimum follow-up of 3 years...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763501/influence-of-lateral-windows-with-decreased-vertical-height-following-maxillary-sinus-floor-augmentation-a-1-year-clinical-and-radiographic-study
#11
Wei Lu, Jin Xu, Hui-Ming Wang, Fu-Ming He
PURPOSE: To verify whether lateral sinus floor elevation (LSFE) with the vertical height of the osteotomy decreased to 3 to 5 mm can achieve improvement compared with a conventional lateral window in terms of implant survival, graft stability, and related complications. MATERIALS AND METHODS: Of the 49 patients who were selected for inclusion in this retrospective study, 25 patients were in the test group and 24 were in the control group based on the vertical height of the lateral window...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763500/the-fate-of-lateral-ridge-augmentation-a-systematic-review-and-meta-analysis
#12
Basel Elnayef, Cristina Porta, Fernando Suárez-López Del Amo, Lorenzo Mordini, Jordi Gargallo-Albiol, Federico Hernández-Alfaro
PURPOSE: Owing to volumetric changes after tooth extraction, lateral ridge augmentation has become a common procedure prior or simultaneous to implant placement. Nonetheless, little is known with regard to the dimensional remodeling after healing of these lateral ridge augmentation procedures. Hence, the purpose of this systematic review was to assess the stability of bone grafting material between augmentation procedures and final healing, in terms of resorption rate. MATERIALS AND METHODS: An electronic and hand literature search was conducted in several databases, such as the Cochrane Oral Health Group Trials Register, Embase, and Cochrane Central Register of Controlled Trials, up until February 2017...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763358/bone-marrow-stimulation-technique-augmented-by-an-ultrapurified-alginate-gel-enhances-cartilage-repair-in-a-canine-model
#13
Rikiya Baba, Tomohiro Onodera, Masatake Matsuoka, Kazutoshi Hontani, Zenta Joutoku, Shinji Matsubara, Kentaro Homan, Norimasa Iwasaki
BACKGROUND: The optimal treatment for a medium- or large-sized cartilage lesion is still controversial. Since an ultrapurified alginate (UPAL) gel enhances cartilage repair in animal models, this material is expected to improve the efficacy of the current treatment strategies for cartilage lesions. HYPOTHESIS: The bone marrow stimulation technique (BMST) augmented by UPAL gel can induce hyaline-like cartilage repair. STUDY DESIGN: Controlled laboratory study...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29762186/decision-making-for-management-of-periimplant-diseases
#14
Khaled Sinjab, Carlos Garaicoa-Pazmino, Hom-Lay Wang
INTRODUCTION: Nonsurgical and surgical management of periimplant mucositis and periimplantitis have shown promising results in arresting periimplant marginal bone loss (MBL) and preventing implant loss. However, management of periimplant diseases still remains unpredictable for full reconstruction of lost tissues and completely arrests disease progression. The present study proposes a decision tree that compiles both clinical and radiographic presentation of failing implants to aid in the decision making for their management...
May 11, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29762155/corr-insights%C3%A2-can-augmented-reality-be-helpful-in-pelvic-bone-cancer-surgery-an-in-vitro-study
#15
Craig Gerrand
No abstract text is available yet for this article.
May 14, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29761903/the-combination-of-a-sphingosine-kinase-2-inhibitor-abc294640-and-a-bcl-2-inhibitor-abt-199-displays-synergistic-anti-myeloma-effects-in-myeloma-cells-without-a-t-11-14-translocation
#16
Pasupathi Sundaramoorthy, Cristina Gasparetto, Yubin Kang
Multiple myeloma (MM) remains an incurable disease in need of the development of novel therapeutic agents and drug combinations. ABT-199 is a specific Bcl-2 inhibitor in clinical trials for MM; however, its activity as a single agent was limited to myeloma patients with the t(11;14) translocation who acquire resistance due to co-expression of Mcl-1 and Bcl-xL. These limitations preclude its use in a broader patient population. We have recently found that a sphingosine kinase 2-specific inhibitor (ABC294640) induces apoptosis in primary human CD138+ cells and MM cell lines...
May 15, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29761837/augmentation-of-the-cytotoxic-effects-of-nitrogen-containing-bisphosphonates-in-hypoxia
#17
Tetsuya Minegaki, Saya Koiki, Yutaro Douke, Chihiro Yamane, Ai Suzuki, Misato Mori, Masayuki Tsujimoto, Kohshi Nishiguchi
OBJECTIVES: Tumour hypoxia is a major obstacle in cancer therapy that leads to poor prognosis. Therefore, the development of cancer treatments that are effective in hypoxia is necessary. Nitrogen-containing bisphosphonates (N-BPs), which are used to treat bone disease, are cytotoxic to several cancer cells in normoxia. Therefore, we investigated the cytotoxicity of N-BPs in cancer cells in hypoxia. METHODS: We studied the cytotoxicities of N-BPs, statins and anticancer drugs in human cancer cells under hypoxic conditions (1% O2 )...
May 15, 2018: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/29760723/applications-of-mesenchymal-stem-cells-in-sinus-lift-augmentation-as-a-dental-implant-technology
#18
REVIEW
Feridoun Parnia, Javad Yazdani, Solmaz Maleki Dizaj
The potential application of stem cell biology in human dentistry is a new and emerging field of research. The objective of the current review was to study the efficiency of mesenchymal stem cells (MSCs) in sinus lift augmentation (SLA). A literature review was performed in PubMed Central using MeSH keywords such as sinus lift, MSCs, dental implants, and augmentation. The searches involved full-text papers written in English, published in the past 10 years (2007-2017). The review included in vitro and in vivo studies on the use of MSCs in SLA...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29759309/efficacy-of-stem-cells-in-maxillary-sinus-floor-augmentation-systematic-review-and-meta-analysis
#19
REVIEW
T C Niño-Sandoval, B C Vasconcelos, S L D Moraes, C A A Lemos, E P Pellizzer
The aim of this review was to test the hypothesis of no difference in the efficacy of bone regeneration when using stem cells in maxillary sinus floor augmentation surgery in comparison to other grafts. Nine randomized clinical trials and one follow-up study involving human subjects were identified through a search of the PubMed/MEDLINE, Scopus, Cochrane, and Web of Science databases, supplemented by a hand search. No significant difference between groups was found for the implant survival rate, increase in bone height, marginal bone loss following implant placement, or new bone formation...
May 11, 2018: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29757470/sinus-augmentation-using-rhbmp-2-acs-in-a-mini-pig-model-influence-of-an-adjunctive-ceramic-bone-biomaterial
#20
Cristiano Susin, Jaebum Lee, Tiago Fiorini, Rubens Moreno de Freitas, Hsien-Chung Chiu, Hari S Prasad, Amanda N Buxton, Ulf Me Wikesjö
BACKGROUND: Recombinant human bone morphogenetic protein-2 in an absorbable collagen sponge carrier (rhBMP-2/ACS) has been shown to support significant bone formation when used to augment the maxillary sinus for implant dentistry. Nevertheless, bone biomaterials have been suggested to extend rhBMP-2/ACS with limited support of the merits of such approaches. OBJECTIVES: To evaluate local bone formation/dental implant osseointegration following implantation of rhBMP-2/ACS combined with a ceramic bone biomaterial using a mini-pig sinus augmentation model...
May 14, 2018: Journal of Clinical Periodontology
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