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https://www.readbyqxmd.com/read/29343182/fibronectin-enhances-cartilage-repair-by-activating-progenitor-cells-through-integrin-%C3%A9-5%C3%AE-1-receptor
#1
Tianqi Tao, Yang Li, Chang Gui, Yong Ma, Yingbin Ge, Hanhao Dai, Kaibin Zhang, Jing Du, Yang Guo, Yiqiu Jiang, Jianchao Gui
This study aimed to determine the effect of fibronectin (FN) on cartilage regeneration through the activation of chondrogenic progenitor cells (CPCs). Cells were isolated from the knee cartilage of mice and cultured in the presence of various concentrations of FN. Proliferation, migration and chondrogenic differentiation assays were performed in vitro. In some experiments, CPCs were pre-incubated with anti-integrin ɑ5β1 antibody for 60 min prior to FN treatment to block the integrin ɑ5β1 receptor. Soluble FN was mixed with Pluronic F-127 and injected into the joint cavity in an early-stage osteoarthritis (OA) model...
January 18, 2018: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29314205/cdc42-is-essential-for-both-articular-cartilage-degeneration-and-subchondral-bone-deterioration-in-experimental-osteoarthritis
#2
Xinhua Hu, Xing Ji, Mengting Yang, Shihao Fan, Jirong Wang, Meiping Lu, Wei Shi, Liu Mei, Chengyun Xu, Xueying Fan, Musaddique Hussain, Jingyu Du, Junsong Wu, Ximei Wu
Cdc42, a member of Rho family small GTPases, is critical for cartilage development. We investigated the roles of Cdc42 in osteoarthritis and explored the potential mechanism underlying Cdc42-mediated articular cartilage degeneration and subchondral bone deterioration. Cdc42 is highly expressed in both articular cartilage and subchondral bone in a mouse osteoarthritis model with surgical destabilisation of the medial meniscus (DMM) in the knee joints. Specifically, genetic disruption of Cdc42, knockdown of Cdc42 expression, or inhibition of Cdc42 activity robustly attenuates the DMM-induced destruction, hypertrophy, high expression of matrix metallopeptidase-13 and collagen X, and activation of Stat3 in articular cartilages...
January 3, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29280278/bioadhesive-polymersome-for-localized-and-sustained-drug-delivery-at-pathological-sites-with-harsh-enzymatic-and-fluidic-environment-via-supramolecular-host-guest-complexation
#3
Meiling Zhu, Kongchang Wei, Sien Lin, Xiaoyu Chen, Chia-Ching Wu, Gang Li, Liming Bian
Targeted and sustained delivery of drugs to diseased tissues/organs, where body fluid exchange and catabolic activity are substantial, is challenging due to the fast cleansing and degradation of the drugs by these harsh environmental factors. Herein, a multifunctional and bioadhesive polycaprolactone-β-cyclodextrin (PCL-CD) polymersome is developed for localized and sustained co-delivery of hydrophilic and hydrophobic drug molecules. This PCL-CD polymersome affords multivalent crosslinking action via surface CD-mediated host-guest interactions to generate a supramolecular hydrogel that exhibits evident shear thinning and efficient self-healing behavior...
December 27, 2017: Small
https://www.readbyqxmd.com/read/29273938/mesenchymal-stem-cells-injections-for-knee-osteoarthritis-a-systematic-overview
#4
REVIEW
Dan Xing, Qi Wang, Ziyi Yang, Yunfei Hou, Wei Zhang, Yaolong Chen, Jianhao Lin
Numerous systematic reviews investigating the effects of mesenchymal stem cells (MSCs) in treating knee osteoarthritis (OA) have been published with controversial conclusion. The purpose of the overview was (1) to perform an overview of systematic reviews investigating MSCs for knee OA and (2) to synthesize evidence qualitatively to assess confidence in the review findings. A systematic search of systematic reviews published through Aug 2017 was conducted using the MEDLINE, EMBASE and Cochrane Library. The methodological quality and risk of bias of included systematic reviews was assessed by AMSTAR instrument and ROBIS tool, respectively...
December 22, 2017: Rheumatology International
https://www.readbyqxmd.com/read/29247979/porous-architected-biomaterial-for-a-tibial-knee-implant-with-minimum-bone-resorption-and-bone-implant-interface-micromotion
#5
Amirmohammad Rahimizadeh, Zahra Nourmohammadi, Sajad Arabnejad, Michael Tanzer, Damiano Pasini
This investigation presents the numerical development of a fully porous tibial knee implant that is suggested to alleviate the clinical problems associated with current prostheses that are fully solid. A scheme combining multiscale mechanics and topology optimization is proposed to handle the homogenized analysis and property tailoring of the porous architecture with the aim of reducing the stiffness mismatch between the implant and surrounding bone. The outcome of applying this scheme is a graded lattice microarchitecture that can potentially offer the implant an improved degree of load bearing capacity while reducing concurrently bone resorption and interface micromotion...
December 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29243770/adipose-derived-stem-cells-in-articular-cartilage-regeneration-current-concepts-and-optimization-strategies
#6
REVIEW
Xingjian Gu, Caixin Li, Feng Yin, Guanghua Yang
Knee osteoarthritis (KOA) is the most common progressive joint disorder associated with disability in the world. As a chronic disease, KOA has multifactorial etiology. However, the poor self-healing ability of the articular cartilage due to its intrinsic tissue hypovascularity and hypocellularity seems to be directly incriminated in the physio-pathological mechanism of KOA. While conventional therapies result in unfavorable clinical outcomes, regenerative cell therapies have shown great promise in articular cartilage regeneration...
December 15, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/29243283/intra-articular-injection-of-autologous-adipose-derived-mesenchymal-stem-cells-in-treatment-of-knee-osteoarthritis
#7
Duško Spasovski, Vesna Spasovski, Zoran Baščarević, Maja Stojiljković, Miša Vreća, Marina Andjelković, Sonja Pavlović
BACKGROUND: Osteoarthritis (OA) is a chronic degenerative joint disease, considered to be the fourth leading cause of disability and the second cause of inability to work in men. Recently, adipose derived mesenchymal stem cells (AD-MSCs) came in focus of regenerative medicine as promising tool for treatment of OA. It has been shown that administration of stem cells into impaired joints results in pain relief and improves quality of life, accompanied with restoration of hyaline articular cartilage...
December 15, 2017: Journal of Gene Medicine
https://www.readbyqxmd.com/read/29240251/progenitor-cells-from-different-zones-of-human-cartilage-and-their-correlation-with-histopathological-osteoarthritis-progression
#8
V P Mantripragada, W A Bova, C Boehm, N S Piuzzi, N A Obuchowski, R J Midura, G F Muschler
Cell-based therapies development for the treatment of osteoarthritis (OA) requires an understanding of the disease progression and attributes of the cells resident in cartilage. This study focused on quantitative assessment of the concentration and biological potential of stem and progenitor cells resident in different zones of cartilage displaying macroscopic Outerbridge grade 1-2 OA, and their correlation with OA progression based on established histologic scoring system. Lateral femoral condyles were collected from fifteen patients with idiopathic OA and varus knees undergoing total knee arthroplasty...
December 14, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29233163/intra-articular-injection-of-expanded-autologous-bone-marrow-mesenchymal-cells-in-moderate-and-severe-knee-osteoarthritis-is-safe-a-phase-i-ii-study
#9
Mahasen Al-Najar, Hiba Khalil, Jihad Al-Ajlouni, Eman Al-Antary, Mohammad Hamdan, Reem Rahmeh, Dana Alhattab, Osama Samara, Mohamad Yasin, Amenah Al Abdullah, Esraa Al-Jabbari, Dima Hmaid, Hanan Jafar, Abdalla Awidi
BACKGROUND: Knee osteoarthritis (KOA) is a major health problem especially in the aging population. There is a need for safe treatment that restores the cartilage and reduces the symptoms. The use of stem cells is emerging as a possible option for the moderate and severe cases. This study aimed at testing the safety of autologous bone marrow mesenchymal stem cells (BM-MSCs) expanded in vitro when given intra-articularly to patients with stage II and III KOA. As a secondary end point, the study tested the ability of these cells to relieve symptoms and restore the knee cartilage in these patients as judged by normalized knee injury and Osteoarthritis Outcome Score (KOOS) and by magnetic resonance imaging (MRI)...
December 12, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29228600/non-invasive-in-vivo-molecular-imaging-of-intra-articularly-transplanted-immortalized-bone-marrow-stem-cells-for-osteoarthritis-treatment
#10
Bou-Yue Peng, Chi-Sheng Chiou, Navneet Kumar Dubey, Sung-Hsun Yu, Yue-Hua Deng, Feng-Chou Tsai, Han-Sun Chiang, Ying-Hua Shieh, Wei-Hong Chen, Win-Ping Deng
Pathophysiology of osteoarthritis (OA) is characterized by progressive loss of articular cartilage in the knee-joints. To impart regenerative ability in lowly metabolizing chondrocytes, the bone marrow stem cells (BMSCs) has recently been recognized as a superior alternative treatment for OA. However, study of primary BMSCs-mediated chondrogenesis is difficult due to progressive cellular aging and replicative senescence. To obtain a therapeutic cell population for OA, BMSCs were immortalized by human papilloma virus (HPV)-16 E6/E7 along with mCherry luciferase (mCL), a gene marker for non-invasive imaging, and designated as iBMSCs-mCL...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29212384/articular-and-subcutaneous-adipose-tissues-of-rheumatoid-arthritis-patients-represent-equal-sources-of-immunoregulatory-mesenchymal-stem-cells
#11
Urszula Skalska, Ewa Kuca-Warnawin, Anna Kornatka, Iwona Janicka, Urszula Musiałowicz, Tomasz Burakowski, Ewa Kontny
Adipose-derived mesenchymal stem cells (ASCs) have immunoregulatory properties, but their activity is dependent on signals provided by the local microenvironment. It is likely that highly inflammatory milieu of rheumatoid joint affects ASCs activity. To test this hypothesis, the function of rheumatoid ASCs derived from articular adipose tissue (AT-ASCs) and ASCs derived from subcutaneous adipose tissue (Sc-ASCs) has been analysed. Articular adipose tissue (infrapatellar fat pad) and subcutaneous adipose tissue (from the site of skin closure with sutures) were obtained from rheumatoid arthritis (RA) patients undergoing total knee joint replacement surgery...
December 6, 2017: Autoimmunity
https://www.readbyqxmd.com/read/29196647/injectable-nanohydroxyapatite-chitosan-gelatin-micro-scaffolds-induce-regeneration-of-knee-subchondral-bone-lesions
#12
B Wang, W Liu, D Xing, R Li, C Lv, Y Li, X Yan, Y Ke, Y Xu, Y Du, J Lin
Subchondral bone has been identified as an attractive target for KOA. To determine whether a minimally invasive micro-scaffolds could be used to induce regeneration of knee subchondral bone lesions, and to examine the protective effect of subchondral bone regeneration on upper cartilage, a ready-to-use injectable treatment with nanohydroxyapatite-chitosan-gelatin micro-scaffolds (HaCGMs) is proposed. Human-infrapatellar-fat-pad-derived adipose stem cells (IPFP-ASCs) were used as a cellular model to examine the osteo-inductivity and biocompatibility of HaCGMs, which were feasibly obtained with potency for multi-potential differentiations...
December 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29190645/cd105-mesenchymal-stem-cells-migrate-into-osteoarthritis-joint-an-animal-model
#13
Pablo Fernandez-Pernas, Iván Rodríguez-Lesende, Alexandre de la Fuente, Jesús Mateos, Isaac Fuentes, Javier De Toro, Fco J Blanco, M C Arufe
Mesenchymal stem cells are being the focus of connective tissue technology and regenerative medicine, presenting a good choice cell source for improving old and well recognized techniques of cartilage defect repair. For instance, the autologous chondrocyte transplantation using new concepts of regenerative medicine. The present study investigated the risk of xenogenicity of human synovial membrane-derived MSCs, injected into the monkeys using intravenous and intra-articular administration. The animal models used were adult monkeys Rhesus which had been injured into the left knee to create an Osteoarthritis (OA) animal model...
2017: PloS One
https://www.readbyqxmd.com/read/29186946/use-of-autologous-bone-marrow-cells-concentrate-enriched-with-platelet-fibrin-on-extensor-mechanism-allograft-reconstruction-for-extensor-mechanism-failure-following-total-knee-arthroplasty
#14
S Giannotti, P D Parchi, G B Colasanti, G Agostini, F Moreschini, C Cataldi, P Ferrata, R Capanna
Allografts techniques remain the best reconstructive strategy for chronic extensor mechanism lesions after total knee arthroplasty (3) but outcomes depend strictly on the host tissue-allograft junctions healing. The purpose of this study is to evaluate if modern techniques of adding autologous bone marrow cells concentrate enriched with platelet-rich fibrin, provide better healing of the allograft. We present the case of an 86 years old patient affected by patellar tendon rupture after TKA. A whole extensor mechanism allograft was performed adding a bone marrow cells concentrate enriched with platelet-rich fibrin on the host tissue-allograft junctions...
October 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29157060/mycobacterium-genavense-infections-in-non-hiv-immunocompromised-hosts-a-systematic-review
#15
Maryam Mahmood, Saira Ajmal, Omar M Abu Saleh, Alexandra Bryson, Jasmine R Marcelin, John W Wilson
BACKGROUND: Mycobacterium genavense is a non-tuberculous mycobacterium which can rarely cause disease in non-HIV immunocompromised hosts. We describe our experience with this unusual infection and perform a systematic review of the literature to describe the features of M. genavense infection in non-HIV immunocompromised hosts. METHODS: All cases of Mycobacterium genavense infection in non-HIV patients at our institution were reviewed. In addition, we conducted a systematic review of the literature to identify previously published cases of M...
November 20, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/29156978/bone-marrow-progenitor-cells-isolated-from-young-rabbit-trochlea-are-more-numerous-and-exhibit-greater-clonogenic-chondrogenic-and-osteogenic-potential-than-cells-isolated-from-condyles
#16
Garima Dwivedi, Anik Chevrier, Caroline D Hoemann, Michael D Buschmann
OBJECTIVE: Bone marrow stimulation procedures initiate repair by fracturing or drilling subchondral bone at base of cartilaginous defect. Earlier studies have shown that defect location and animal age affect cartilage repair outcome, suggesting a strong influence of structural and biological characteristics of subchondral bone. Here, we analyzed comprehensive biological characteristics of bone marrow progenitor cells (BMPCs) in subchondral bone of young and old rabbit condyle and trochlea...
January 1, 2017: Cartilage
https://www.readbyqxmd.com/read/29156945/modulation-of-gene-expression-in-infrapatellar-fat-pad-derived-mesenchymal-stem-cells-in-osteoarthritis
#17
Beatriz Bravo, Jose Manuel Argüello, Arancha R Gortazar, Francisco Forriol, Javier Vaquero
Aim In the osteoarthritis (OA) disease, all structures of the joint are involved. The infrapatellar Hoffa fat pad is rich in macrophages and granulocytes, which also represents a source of adipose mesenchymal progenitor cells (ASC) cells. In our study, we analyze how OA affects the ability of ASC-derived from Hoffa's fat pad to differentiate into chondrocytes. Material and methodology We took knee Hoffa's pad samples and adipose tissue from the proximal thigh from 6 patients diagnosed with severe OA and from another 6 patients with an anterior cruciate ligament (ACL) rupture without OA...
January 2018: Cartilage
https://www.readbyqxmd.com/read/29146943/cryopreservation-of-human-mesenchymal-stem-cells-in-an-allogeneic-bioscaffold-based-on-platelet-rich-plasma-and-synovial-fluid
#18
Haritz Gurruchaga, Laura Saenz Del Burgo, Ane Garate, Diego Delgado, Pello Sanchez, Gorka Orive, Jesús Ciriza, Mikel Sanchez, Jose Luis Pedraz
Transplantation of mesenchymal stem cells (MSCs) has emerged as an alternative strategy to treat knee osteoarthritis. In this context, MSCs derived from synovial fluid could provide higher chondrogenic and cartilage regeneration, presenting synovial fluid as an appropriate MSCs source. An allogeneic and biomimetic bioscaffold composed of Platelet Rich Plasma and synovial fluid that preserve and mimics the natural environment of MSCs isolated from knee has also been developed. We have optimized the cryopreservation of knee-isolated MSCs embedded within the aforementioned biomimetic scaffold, in order to create a reserve of young autologous embedded knee MSCs for future clinical applications...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29141683/pellet-coculture-of-osteoarthritic-chondrocytes-and-infrapatellar-fat-pad-derived-mesenchymal-stem-cells-with-chitosan-hyaluronic-acid-nanoparticles-promotes-chondrogenic-differentiation
#19
Shu Huang, Xiongbo Song, Tao Li, Jingfang Xiao, Yemiao Chen, Xiaoyuan Gong, Weinan Zeng, Liu Yang, Cheng Chen
BACKGROUND: Cell source plays a key role in cell-based cartilage repair and regeneration. Recent efforts in cell coculture have attempted to combine the advantages and negate the drawbacks of the constituent cell types. The aim of this study was to evaluate the chondrogenic outcome of articular chondrocytes (ACs) and infrapatellar fat pad (IPFP)-derived mesenchymal stem cells (MSCs) in direct coculture. METHODS: ACs and IPFP MSCs from the same patients with knee osteoarthritis (OA) were cocultured in monolayer and in pellets...
November 15, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29126349/bone-marrow-aspirate-concentrate-for-cartilage-defects-of-the-knee-from-bench-to-bedside-evidence
#20
Eric J Cotter, Kevin C Wang, Adam B Yanke, Susan Chubinskaya
Objective To critically evaluate the current basic science, translational, and clinical data regarding bone marrow aspirate concentrate (BMAC) in the setting of focal cartilage defects of the knee and describe clinical indications and future research questions surrounding the clinical utility of BMAC for treatment of these lesions. Design A literature search was performed using the PubMed and Ovid MEDLINE databases for studies in English (1980-2017) using keywords, including ["bone marrow aspirate" and "cartilage"], ["mesenchymal stem cells" and "cartilage"], and ["bone marrow aspirate" and "mesenchymal stem cells" and "orthopedics"]...
November 1, 2017: Cartilage
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