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https://www.readbyqxmd.com/read/29352637/the-ability-of-topical-and-systemic-statins-to-increase-osteogenesis-around-dental-implants-a-systematic-review-of-histomorphometric-outcomes-in-animal-studies
#1
REVIEW
V Moraschini, D C F Almeida, J A Calasans-Maia, M Diuana Calasans-Maia
The purpose of this systematic review was to evaluate the quantitative histomorphometric outcomes of animal studies investigating statins as a pro-osteogenic agent to enhance the osseointegration of dental implants. Some animal studies have suggested a beneficial action of statins on bone tissue. Electronic and manual literature searches, without date or language restriction, ​​were performed by two independent review authors up to February 2017. Eligibility criteria included animal trials quantitatively analysing the pro-osteogenic effect of statins on dental implants...
January 15, 2018: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29352347/autologous-cell-based-therapy-for-treatment-of-large-bone-defects-from-bench-to-bedside
#2
REVIEW
R Verboket, M Leiblein, C Seebach, C Nau, M Janko, M Bellen, H Bönig, D Henrich, I Marzi
OBJECTIVES: Reconstruction of long segmental bone defects is demanding for patients and surgeons, and associated with long-term treatment periods and substantial complication rates in addition to high costs. While defects up to 4-5 cm length might be filled up with autologous bone graft, heterologous bone from cadavers, or artificial bone graft substitutes, current options to reconstruct bone defects greater than 5 cm consist of either vascularized free bone transfers, the Masquelet technique or the Ilizarov distraction osteogenesis...
January 19, 2018: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29351034/postoperative-complications-following-lefort-1-maxillary-advancement-surgery-in-cleft-palate-patients-a-5-year-retrospective-study
#3
Isabelle Moran, Satnam Virdee, Ian Sharp, Jagdeep Sulh
OBJECTIVE: To investigate the postoperative complication rates of LeFort 1 maxillary advancement surgery in cleft patients when performed by a single surgeon over a 5-year period. DESIGN: A retrospective case note review of 79 cleft palate patients. SETTING: All surgery was performed by a single oral and maxillofacial surgeon in a tertiary care center. PARTICIPANTS: All cleft palate patients over 17 years of age who opted for surgical correction of maxillary hypoplasia with a LeFort 1 between 2010 and 2015...
February 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29350343/syringic-acid-a-phenolic-acid-promotes-osteoblast-differentiation-by-stimulation-of-runx2-expression-and-targeting-of-smad7-by-mir-21-in-mouse-mesenchymal-stem-cells
#4
B Arumugam, K Balagangadharan, N Selvamurugan
Syringic acid (SA), a phenolic acid, has been used in Chinese and Indian medicine for treating diabetes but its role in osteogenesis has not yet been investigated. In the present study, at the molecular and cellular levels, we evaluated the effects of SA on osteoblast differentiation. At the cellular level, there was increased alkaline phosphatase (ALP) activity and calcium deposition by SA treatment in mouse mesenchymal stem cells (mMSCs). At the molecular level, SA treatment of these cells stimulated expression of Runx2, a bone transcription factor, and of osteoblast differentiation marker genes such as ALP, type I collagen, and osteocalcin...
January 19, 2018: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/29349655/total-body-irradiation-tremendously-impair-the-proliferation-differentiation-and-chromosomal-integrity-of-bone-marrow-derived-mesenchymal-stromal-stem-cells
#5
Wen-Jyi Lo, Chiao-Lin Lin, Yu-Chien Chang, Li-Yuan Bai, Chen-Yuan Lin, Ji-An Liang, Long-Yuan Li, Ling-Min Chao, Chang-Fang Chiu, Chuan-Mu Chen, Su-Peng Yeh
Total body irradiation (TBI) is frequently used in hematopoietic stem cell transplantation (HSCT) and is associated with many complications due to radiation injury to the normal cells, including normal stem cells. Nevertheless, the effects of TBI on the mesenchymal stromal stem cell (MSC) are not fully understood. Bone marrow-derived MSCs (BM-MSCs) isolated from normal adults were irradiated with 200 cGy twice daily for consecutive 3 days, a regimen identical to that used in TBI-conditioning HSCT. The characteristics, differentiation potential, cytogenetics, hematopoiesis-supporting function, and carcinogenicity of the irradiated BM-MSCs were then compared to the non-irradiated control...
January 18, 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29348519/guanylate-binding-protein-1-inhibits-osteogenic-differentiation-of-human-mesenchymal-stromal-cells-derived-from-bone-marrow
#6
Shi Bai, Zhixiang Mu, Yuanding Huang, Ping Ji
Guanylate Binding Proteins (GBPs) are a group of cytokine-inducible large guanosine triphosphatase. Previous studies have shown high expression of GBP1 in circulating monocytes of premenopausal subjects was correlated to extremely low peak bone mass, which is considered as an important determinant of osteoporosis. However, whether GBPs play a role in regulation of osteogenesis of mesenchymal stromal cells (MSCs) remains largely unknown. In the present study, we found that mRNA expression of GBP1 was highest among all the GBPs, and it was dramatically downregulated during osteogenic differentiation of human MSCs derived from bone marrow (hBM-MSCs)...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29346765/characterization-of-endothelial-cells-associated-with-hematopoietic-niche-formation-in-humans-identifies-il-33-as-an-anabolic-factor
#7
Keane Jared Guillaume Kenswil, Adrian Christopher Jaramillo, Zhen Ping, Si Chen, Remco Michiel Hoogenboezem, Maria Athina Mylona, Maria Niken Adisty, Eric Moniqué Johannes Bindels, Pieter Koen Bos, Hans Stoop, King Hong Lam, Bram van Eerden, Tom Cupedo, Marc Hermanus Gerardus Petrus Raaijmakers
Bone marrow formation requires an orchestrated interplay between osteogenesis, angiogenesis, and hematopoiesis that is thought to be mediated by endothelial cells. The nature of the endothelial cells and the molecular mechanisms underlying these events remain unclear in humans. Here, we identify a subset of endoglin-expressing endothelial cells enriched in human bone marrow during fetal ontogeny and upon regeneration after chemotherapeutic injury. Comprehensive transcriptional characterization by massive parallel RNA sequencing of these cells reveals a phenotypic and molecular similarity to murine type H endothelium and activation of angiocrine factors implicated in hematopoiesis, osteogenesis, and angiogenesis...
January 16, 2018: Cell Reports
https://www.readbyqxmd.com/read/29344653/a-novel-variant-of-osteogenesis-imperfecta-type-iv-and-low-serum-phosphorus-level-caused-by-a-val94asp-mutation-in-col1a1
#8
Qi Yang, Hong Xu, Jinsi Luo, Qinle Zhang, Bobo Xie, Sheng Yi, Xiuliang Rong, Jin Wang, Zailong Qin, Tingting Jiang, Li Lin, Yangjin Zuo, Xin Fan
Osteogenesis imperfecta (OI) is a rare congenital disorder characterized by bone fragility and fractures, and associated with bone deformity, short stature, dentin, ligament and blue‑gray eye sclera. OI is caused by a heterozygous mutation in collagen α‑1(I) chain (COL1A1) or collagen α‑2(I) chain (COL1A2) genes that encode α chains of type I collagen. Collagen α chain peptide contains an N‑propeptide, which has a role in assembly and processing of collagen. Point mutations in the N‑propeptide domain appear to trigger OI...
January 16, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29344330/developments-in-rare-bone-diseases-and-mineral-disorders
#9
REVIEW
Siobhan Bacon, Rachel Crowley
In the last decade, there have been a number of significant advances made in the field of rare bone diseases. In this review, we discuss the expansion of the classification system for osteogenesis imperfecta (OI) and the resultant increase in therapeutic options available for management of OI. Bisphosphonates remain the most widely used intervention for OI, although the effect on fracture rate reduction is equivocal. We review the other therapies showing promising results, including denosumab, teriparatide, sclerostin, transforming growth factor β inhibition and gene targeted approaches...
January 2018: Therapeutic Advances in Chronic Disease
https://www.readbyqxmd.com/read/29343687/mechanically-sensitive-mirnas-bias-human-mesenchymal-stem-cell-fate-via-mtor-signalling
#10
Jessica E Frith, Gina D Kusuma, James Carthew, Fanyi Li, Nicole Cloonan, Guillermo A Gomez, Justin J Cooper-White
Mechanotransduction is a strong driver of mesenchymal stem cell (MSC) fate. In vitro, variations in matrix mechanics invoke changes in MSC proliferation, migration and differentiation. However, when incorporating MSCs within injectable, inherently soft hydrogels, this dominance over MSC response substantially limits our ability to couple the ease of application of hydrogels with efficiently directed MSC differentiation, especially in the case of bone generation. Here, we identify differential miRNA expression in response to varying hydrogel stiffness and RhoA activity...
January 17, 2018: Nature Communications
https://www.readbyqxmd.com/read/29342370/fgf8-signaling-alters-the-osteogenic-cell-fate-in-the-hard-palate
#11
J Xu, Z Huang, W Wang, X Tan, H Li, Y Zhang, W Tian, T Hu, Y P Chen
Fibroblast growth factor (FGF) signaling has been implicated in the regulation of osteogenesis in both intramembranous and endochondral ossifications. In the developing palate, the anterior bony palate forms by direct differentiation of cranial neural crest (CNC)-derived mesenchymal cells, but the signals that regulate the osteogenic cell fate in the developing palate remain unclear. In the present study, we investigated the potential role of FGF signaling in osteogenic fate determination of the palatal mesenchymal cells...
January 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29342037/preservation-of-cells-of-the-organ-of-corti-and-innervating-dendritic-processes-following-cochlear-implantation-in-the-human-an-immunohistochemical-study
#12
Takefumi Kamakura, Jennifer T O'Malley, Joseph B Nadol
HYPOTHESIS: This study evaluates the degree of preservation of hair cells, supporting cells, and innervating dendritic processes after cochlear implantation in the human using immunohistochemical methods. BACKGROUND: Surgical insertion of a cochlear implant electrode induces various pathologic changes within the cochlea including insertional trauma, foreign body response, inflammation, fibrosis, and neo-osteogenesis. These changes may result in loss of residual acoustic hearing, adversely affecting the use of hybrid implants, and may result in loss of putative precursor cells, limiting the success of future regenerative protocols...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29341108/characteristics-of-tendon-derived-stem-cells-according-to-different-factors-to-induce-the-tendinopathy
#13
Sun Jeong Kim, Da-Hyun Song, Sang Jun Kim
Tendon derived stem cells (TDSCs) have been used as a therapeutic agent and as a healing marker. However, there has been no study about the characteristics of TDSCs extracted from tendinopathic tendon tissues. The aim of this study was to find the different characteristics of TDSCs according to the factors to induce the tendinopathy. Five- and 15-week old Sprague Dawley rats were used for this study and chemically-induced and injury-induced tendinopathy models were made depending on the age of the animal for different types of tendinopathy...
January 17, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29340375/enhancement-of-bmp-2-mediated-angiogenesis-and-osteogenesis-by-2-n-6-o-sulfated-chitosan-in-bone-regeneration
#14
Yuanzhong Pan, Jie Chen, Yuanman Yu, Kai Dai, Jing Wang, Changsheng Liu
Sulfated polysaccharides are attractive semi-synthesized materials that can be used as a mimic of heparan sulfate to modulate the protein activity and other physiological processes. In this study, we employed sulfated chitosan to enhance the angiogenic capacity of bone morphogenic protein-2 (BMP-2). Bone marrow stromal cells (BMSCs) cultured in a combination of BMP-2 and 2-N,6-O-sulfated chitosan (SCS) group exhibited a higher cell viability and sprouting ability. The cells also secreted more VEGF and NO. The expression patterns of angiogenic and osteogenic genes were analyzed, and VEGFR2 signaling was found to play a role in the enhancing effect of SCS...
January 17, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29338185/injectable-and-thermo-sensitive-hydrogel-and-pdlla-electrospun-nanofiber-membrane-composites-for-guided-spinal-fusion
#15
Ying Qu, BeiYu Wang, Bingyang Chu, Chenlu Liu, Xin Rong, Hua Chen, JinRong Peng, Zhiyong Qian
Spinal fusion is the classic treatment to achieve spinal stability for the treatment of the spinal disease. Generally, spinal fusion still has to combine a certain of bone matrix for promoting bone formation to achieve the desired fusion effect based on the surgery, including the traditional bone matrix, such as the autologous bone, allografts and xenografts. Nevertheless, some problems still existed such as the immunogenic problems, the secondary wound, and pathogenic transfer and so on. Here the injectable thermosensitive hydrogel could substitute to avoid the problems as a potential biological scaffold for tissue engineering...
January 16, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29335199/3-d-mineralized-silk-fibroin-polycaprolactone-composite-scaffold-modified-with-polyglutamate-conjugated-with-bmp-2-peptide-for-bone-tissue-engineering
#16
Jingjing Luo, Haitao Zhang, Jiang Zhu, Xiaokang Cui, Junjiu Gao, Xin Wang, Jie Xiong
In the field of bone tissue engineering, an ideal three-dimensional (3-D) scaffold should not only structurally mimic the extracellular matrix (ECM) in large tissues but also mechanically support the bone healing process and provide biochemical cues to induce osteogenesis. In this study, we investigated the feasibility of functionalisation of scaffolds by coupling polyglutamate acid conjugated with BMP-2 peptide onto silk fibroin (SF)/polycaprolactone (PCL) (SF/PCL) blend nanofibers. The morphology, composition, and mineralisation, were confirmed by FE-SEM, XRD, and FT-IR spectroscopy...
December 28, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29334646/17%C3%AE-estradiol-improves-the-efficacy-of-exploited-autologous-bone-marrow-derived-mesenchymal-stem-cells-in-non-union-radial-defect-healing-a-rabbit-model
#17
Delaram Zamani Mazdeh, Pezhman Mirshokraei, Mohammadreza Emami, Ali Mirshahi, Iraj Karimi
Exploiting mesenchymal stem cells (MSCs) appears to be an appealing alternative to the traditional clinical approach in the treatment of non-union bone defects. It has been shown that 17β-estradiol improves the osteogenesis and proliferation potential of the MSCs via estrogen receptors. We investigated the effect of 17β-estradiol on exploiting autologous BMSCs (bone marrow-derived MSCs) for the purpose of healing of radial non-union segmental defect in rabbit. Twenty rabbits were divided into 4 experimental groups: 1...
December 28, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/29331906/strontium-hydroxyapatite-scaffolds-engineered-with-stem-cells-aid-osteointegration-and-osteogenesis-in-osteoporotic-sheep-model
#18
Sunitha Chandran, Sachin J Shenoy, Suresh Babu S, Renjith P Nair, Varma H K, Annie John
Osteoporotic fracture healing is an orthopaedic challenge due to excessive bone resorption and impaired osteogenesis. Majority of current treatment strategies focus on regulating bone resorption and the potential application of Mesenchymal Stem Cells (MSCs) in promoting osteogenesis has not been explored much. Furthermore, the present study has put forth a novel approach, wherein the synergistic action of Strontium (Sr) and MSCs in a single implant may facilitate osteoporotic bone healing. Strontium Hydroxyapatite (SrHA) synthesized by wet precipitation was fabricated into tissue engineered Strontium incorporated Hydroxyapatite (cSrHA) using sheep adipose tissue derived MSCs (ADMSCs)...
December 28, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29331807/clay-nanoparticles-for-regenerative-medicine-and-biomaterial-design-a-review-of-clay-bioactivity
#19
REVIEW
Mohamed Mousa, Nicholas D Evans, Richard O C Oreffo, Jonathan I Dawson
Clay nanoparticles, composites and hydrogels are emerging as a new class of biomaterial with exciting potential for tissue engineering and regenerative medicine applications. Clay particles have been extensively explored in polymeric nanocomposites for self-assembly and enhanced mechanical properties as well as for their potential as drug delivery modifiers. In recent years, a cluster of studies have explored cellular interactions with clay nanoparticles alone or in combination with polymeric matrices. These pioneering studies have suggested new and unforeseen utility for certain clays as bioactive additives able to enhance cellular functions including adhesion, proliferation and differentiation, most notably for osteogenesis...
January 3, 2018: Biomaterials
https://www.readbyqxmd.com/read/29330991/diaphyseal-nutrient-foramina-in-dried-human-adult-long-bones-of-lower-limb-in-pakistan
#20
Ejaz Afzal, Fatima Sherin, Omair Khan, Noaman Hussain Siddiqui
BACKGROUND: osteogenesis needs circulation of blood in the bones. Bone growth, repair of fracture, maintenance of bone vitality and other injures also need blood circulation in proper way. Blood is allowed to flow via holes in the diaphysis, which are called as nutrient foramina. METHODS: The crosssectional study was done in the department of Anatomy, Ayub and Khyber Medical College (Osteology Sections). The aim was to observe diaphyseal nutrient foramina in the human long bones of the lower limb...
October 2017: Journal of Ayub Medical College, Abbottabad: JAMC
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