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https://www.readbyqxmd.com/read/29231967/therapeutic-potential-of-porcine-bronchoalveolar-fluid-derived-mesenchymal-stromal-cells-in-a-pig-model-of-lps-induced-ali
#1
Mahesh Khatri, Levi Arthur Richardson
In this study, we isolated mesenchymal stromal (stem) cells (MSCs) from broncho-alveolar lavage fluid (BAL) of 2-6 week-old commercial pigs. BAL-MSCs displayed fibroblastic morphology and possessed self-renewal properties. Similar to bone-marrow MSCs, BAL-MSCs expressed mesenchymal markers and both cell types lacked the expression of hematopoetic markers. BAL-MSCs, when cultured in differentiation induction media, differentiated into adipocytes, osteocytes and chondrocytes. Next, we examined if BAL-MSCs have the ability to treat lipopolysaccharide (LPS)-induced acute lung injury (ALI) in a pig model...
December 12, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29231060/combined-effects-of-ovariectomy-and-streptozotocin-induced-diabetes-in-the-articular-cartilage-of-rats
#2
A Saeki Fernandes, C C N Fonseca, G Rodrigues da Silva Sasso, L Carvalho Cezar, M Aparecida Dos Santos, M J Simões, R S Simões, R Florencio-Silva
AIM: To evaluate the combined effects of streptozotocin-induced diabetes (Di) and ovariectomy in the articular cartilage of rats. METHODS: Forty adult female Wistar rats were ovariectomized (OVX) or sham-operated. After recovery from surgery, the animals were assigned randomly into four groups: OVX control (OVX-C); OVX treated with 10 µg/kg/day of 17β-estradiol (OVX-E); sham-operated subjected to Di (Sham-Di); and OVX subjected to Di (OVX-Di). After 60 days of treatment, the animals were euthanized and the distal femurs with articular cartilage were processed for paraffin-embedding...
December 12, 2017: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/29230102/specific-deletion-of-%C3%AE-catenin-in-col2-expressing-cells-leads-to-defects-in-epiphyseal-bone
#3
Tingyu Wang, Jun Li, Guang-Qian Zhou, Peter Ma, Yue Zhao, Baoli Wang, Di Chen
The role of canonical Wnt/β-catenin signaling in postnatal bone growth has not been fully defined. In the present studies, we generated β-catenin conditional knockout (KO) mice and deleted β-catenin in Col2-expressing chondrocytes and mesenchymal progenitor cells. Findings from analyzing the β-cateninCol2CreER KO mice revealed severe bone destruction and bone loss phenotype in epiphyseal bone, probably due to the increase in osteoclast formation and the accumulation of adipocytes in this area. In addition, we also found bone destruction and bone loss phenotype in vertebral bone in β-cateninCol2CreER KO mice...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/29230039/gli1-identifies-osteogenic-progenitors-for-bone-formation-and-fracture-repair
#4
Yu Shi, Guangxu He, Wen-Chih Lee, Jennifer A McKenzie, Matthew J Silva, Fanxin Long
Bone formation in mammals requires continuous production of osteoblasts throughout life. A common molecular marker for all osteogenic mesenchymal progenitors has not been identified. Here, by lineage-tracing experiments in fetal or postnatal mice, we discover that Gli1+ cells progressively produce osteoblasts in all skeletal sites. Most notably, in postnatal growing mice, the Gli1+ cells residing immediately beneath the growth plate, termed here "metaphyseal mesenchymal progenitors" (MMPs), are essential for cancellous bone formation...
December 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/29228639/role-of-melatonin-combined-with-exercise-as-a-switch-like-regulator-for-circadian-behavior-in-advanced-osteoarthritic-knee
#5
Yunkyung Hong, Hyunsoo Kim, Seunghoon Lee, Yunho Jin, Jeonghyun Choi, Sang-Rae Lee, Kyu-Tae Chang, Yonggeun Hong
Here, we show the role of melatonin combined with or without exercise as a determinant of multicellular behavior in osteoarthritis. We address the relationship between the molecular components governing local circadian clock and changes in the osteoarthritic musculoskeletal axis. Melatonin was injected subcutaneously in animals with advanced knee osteoarthritis (OA) for 4 weeks. Concurrently, moderate treadmill exercise was applied for 30 min/day. Morphometric, histological, and gene/protein-level analyses were performed in the cartilage, synovium, bone, and gastrocnemius muscle...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228600/non-invasive-in-vivo-molecular-imaging-of-intra-articularly-transplanted-immortalized-bone-marrow-stem-cells-for-osteoarthritis-treatment
#6
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/29228594/bone-strengthening-pill-bsp-promotes-bone-cell-and-chondrocyte-repair-and-the-clinical-and-experimental-study-of-bsp-in-the-treatment-of-osteonecrosis-of-the-femoral-head
#7
Zheng Li, Lulin Wang, Jin Wei, Liguo Zhu, Xisheng Weng, Jin Jin, Hong Xiao, Jun Zhang, Heming Wang, Guantong Shi, Lingpeng Pei, Fangde Zou, Wanqiang Zhang, Tianzun Tao, Xin Dong
About 1 in 3 people suffer from bone and joint disease, which is a disease of bone and cartilage cells. Osteonecrosis of the femoral head (ONFH) is a typical example of bone and joint disease involving bone cell necrosis. Osteonecrosis of the femoral head leads to the occurrence of premature osteoarthritis of the hip and collapse of the cartilage cells, and there is currently no effective drug treatment available. In order to study the effects of "bone-strengthening pill" (BSP) on the repair of bone and cartilage cells, we investigated the potential effects of the herbal mixture BSP in an animal model of avascular necrosis of the femoral head and in patients...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228404/chondrocyte-viability-at-time-of-transplantation-for-osteochondral-allografts-preserved-by-the-missouri-osteochondral-preservation-system-versus-standard-tissue-bank-protocol
#8
Aaron M Stoker, James P Stannard, James L Cook
No abstract text is available yet for this article.
December 11, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29227527/m2-muscarinic-receptor-activation-inhibits-cell-proliferation-and-migration-of-rat-adipose-mesenchymal-stem-cells
#9
Roberta Piovesana, Simona Melfi, Mario Fiore, Valerio Yi, Ada Maria Tata
Mesenchymal stem cells (MSCs), also known as stromal mesenchymal stem cells, are multipotent cells, which can be found in many tissues and organs as bone marrow, adipose tissue and other tissues. In particular MSCs derived from Adipose tissue (ADSCs) are the most frequently used in regenerative medicine because they are easy to source, rapidly expandable in culture and excellent differentiation potential into adipocytes, chondrocytes and other cell types. Acetylcholine (ACh), is one of the most important neurotransmitter in central (CNS) and peripheral nervous system (PNS), playing important roles also in non-neural tissue, but its functions in MSCs are still not investigated...
December 11, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29227501/chondrogenic-potential-of-macroporous-biodegradable-cryogels-based-on-synthetic-poly-%C3%AE-amino-acids
#10
T Sedlačík, O K Acar, H Studenovská, I Kotelnikov, J Kučka, Z Konečná, T Zikmund, J Kaiser, G T Kose, F Rypáček
In this study, the potential of highly porous hydrogels based on biodegradable synthetic poly(α-amino acids) to support proliferation and chondrogenesis of human dental pulp stem cells (hDPSCs) was investigated. Covalently crosslinked gels with permanent pores were formed under cryogenic conditions by free-radical copolymerization of poly[N5-(2-hydroxyethyl)-l-glutamine-stat-N5-(2-methacryloyl-oxy-ethyl)-l-glutamine] (PHEG-MA) with 2-hydroxyethyl methacrylate (HEMA) and N-propargyl methacrylamide (PrMAAm) as minor co-monomers...
December 11, 2017: Soft Matter
https://www.readbyqxmd.com/read/29225174/photopolymerized-maleilated-chitosan-methacrylated-silk-fibroin-micro-nanocomposite-hydrogels-as-potential-scaffolds-for-cartilage-tissue-engineering
#11
Yingshan Zhou, Kaili Liang, Shuyan Zhao, Can Zhang, Jun Li, Hongjun Yang, Xin Liu, Xianze Yin, Dongzhi Chen, Weilin Xu, Pu Xiao
Hydrogels composed of natural materials exhibit great application potential in artificial scaffolds for cartilage repair as they can resemble the extracellular matrices of cartilage tissues comprised of various glycosaminoglycan and collagen. Herein, the natural polymers with vinyl groups, i.e. maleilated chitosan (MCS) and methacrylated silk fibroin (MSF) micro/nanoparticles, were firstly synthesized. The chemical structures of MCS and MSF micro/nanoparticles were investigated using Fourier transform infrared (FTIR) spectroscopy, proton nuclear magnetic resonance (1H NMR) spectroscopy, and X-ray photoelectron spectroscopy (XPS)...
December 7, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29223595/modulation-of-cartilage-s-response-to-injury-can-chondrocyte-apoptosis-be-reversed
#12
REVIEW
Ippokratis Pountos, Peter V Giannoudis
Osteoarthritis is characterized by a chronic, progressive and irreversible degradation of the articular cartilage associated with joint inflammation and a reparative bone response. More than 100 million people are affected by this condition worldwide with significant health and welfare costs. Our available treatment options in osteoarthritis are extremely limited. Chondral or osteochondral grafts have shown some promising results but joint replacement surgery is by far the most common therapeutic approach. The difficulty lies on the limited regeneration capacity of the articular cartilage, poor blood supply and the paucity of resident progenitor stem cells...
December 2017: Injury
https://www.readbyqxmd.com/read/29223037/a-microfabricated-platform-for-the-study-of-chondrogenesis-under-different-compressive-loads
#13
Reza Kowsari-Esfahan, Azadeh Jahanbakhsh, Mohammad Said Saidi, Shahin Bonakdar
Microfluidic devices are beneficial in miniaturizing and multiplexing various cellular assays in a single platform. Chondrogenesis is known to pertain to chemical, topographical, and mechanical cues in the microenvironment. Mechanical cues themselves have numerous parameters such as strain magnitude, frequency, and stimulation time. Effects of different strain magnitudes on the chondrogenic differentiation of adult stem cells have not been explored thoroughly. Here, a new multilayer microdevice is presented for the unidirectional compressive stimulation of cells in a three-dimensional cell culture...
December 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29222391/the-g-protein-coupled-receptor-gpr161-regulates-forelimb-formation-limb-patterning-and-skeletal-morphogenesis-in-a-primary-cilium-dependent-manner
#14
Sun-Hee Hwang, Kevin A White, Bandarigoda Nipunika Somatilaka, John M Shelton, James A Richardson, Saikat Mukhopadhyay
The role of basal suppression of Sonic hedgehog (Shh) pathway and its interaction with Indian hedgehog (Ihh) signaling during limb/skeletal morphogenesis is not well understood. The orphan G-protein-coupled receptor, Gpr161 localizes to primary cilia, and functions as a negative regulator of Shh signaling by promoting Gli transcriptional repressor versus activator formation. Here, we show that forelimb buds are not formed in Gpr161 knockout mice embryos despite establishment of prospective limb fields. Limb-specific deletion of Gpr161 resulted in prematurely expanded Shh signaling and ectopic Shh-dependent patterning defects to cause polysyndactyly...
December 8, 2017: Development
https://www.readbyqxmd.com/read/29219022/effectiveness-of-radiofrequency-hyperthermia-for-treating-cartilage-in-guinea-pigs-with-primary-osteoarthritis
#15
Kenji Takahashi, Hiroshi Nakamura, Hitoshi Ozawa, Sanshiro Hashimoto, Norio Iijima, Shimpei Higo, Hiroshi Watanabe, Yusuke Mochizuki, Shinro Takai
Objective Autophagy was reported to be essential for maintaining chondrocyte function, and reduced autophagy leads to osteoarthritis (OA). Previous studies showed involvement of heat shock stress in the control of autophagy in cells. This study sought to investigate the effect of hyperthermia on the expression of autophagy-related proteins in articular cartilage and the progression of naturally occurring OA in Hartley guinea pigs. Design Radiofrequency pulses of 13.56 MHz were applied to the animals' knees for 20 minutes to induce hyperthermia...
January 2018: Cartilage
https://www.readbyqxmd.com/read/29219021/review-of-the-mechanism-of-action-for-supartz-fx-in-knee-osteoarthritis
#16
Roy D Altman, Vinod Dasa, Jun Takeuchi
Objective Summarize the biologic effects of Supartz FX for knee osteoarthritis (OA), the first worldwide clinically approved intra-articular (IA) hyaluronic acid (HA) product. Design To determine the mechanism of action from preclinical and clinical studies, a literature search was conducted of Supartz FX using academic databases from 1987 to 2016. Articles on Supartz FX that deal with its mechanisms of action were extracted, categorized, and reviewed. Results Supartz FX has 2 potential mechanisms of action: (1) biomechanical: IA Supartz FX directly improves the viscoelasticity and lubrication of synovial fluid; (2) physiologic: IA Supartz FX penetrates synovium and cartilage tissues to reach HA receptors on the surface of synoviocytes and chondrocytes...
January 2018: Cartilage
https://www.readbyqxmd.com/read/29219020/correlation-of-mri-appearance-of-autologous-chondrocyte-implantation-in-the-ankle-with-clinical-outcome
#17
Keith W Chan, Richard D Ferkel, Brian Kern, Sarah S Chan, Gregory R Applegate
The objective of this study was to characterize magnetic resonance imaging (MRI) findings and correlate with clinical results in patients who underwent autologous chondrocyte implantation (ACI) of osteochondral lesions of the talus (OLT). METHODS: Twenty-four grafts were evaluated at a mean 65.8 months after ACI for OLT. MRI was performed on a 1.5-T GE scanner using multiple sequences. Graft appearance was compared with preoperative MRI and evaluated for 6 criteria: defect fill, surface regularity, signal pattern, bone marrow edema, subchondral plate irregularity, and presence of cystic lesions...
January 2018: Cartilage
https://www.readbyqxmd.com/read/29218684/feasibility-of-arthroscopic-autologous-chondrocyte-implantation-in-the-hip-using-an-injectable-hydrogel
#18
Steffen Thier, Florian Baumann, Christel Weiss, Stefan Fickert
INTRODUCTION: In the long term the treatment of articular cartilage defects of the hip has the most direct impact on the postoperative outcome and should diminish degenerative changes caused by different pathologies. The purpose of this prospective feasibility study is to describe technical aspects of arthroscopic, injectable autologous chondrocyte implantation in the hip and to report the short-term outcome. METHODS: Full-thickness cartilage defects of 13 patients were treated arthroscopically with an injectable autologous chondrocyte transplantation product (Novocart Inject, Tetec) in a 2-step surgical procedure...
December 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29218077/long-noncoding-rnas-a-new-regulatory-code-in-osteoarthritis
#19
REVIEW
Xiao Cen, Xin-Qi Huang, Wen-Tian Sun, Qing Liu, Jun Liu
It is reported that long noncoding RNAs (lncRNAs) were expressed aberrantly in cartilage of osteoarthritis (OA). Current evidence indicates that lncRNAs not only serve as positive or negative regulators of OA, but also crosstalk with multiple potential targets to impact on the critical events in OA process. This review summarized the lncRNAs identified in OA to date, discussed their influence on the survival of chondrocytes and synoviocytes, arthritis-associated factors, and angiogenesis, and indicated the potential in diagnosis, therapy, and prognosis...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29217163/cx3cr1-regulates-osteoarthrosis-chondrocyte-proliferation-and-apoptosis-via-wnt-%C3%AE-catenin-signaling
#20
You Sun, Feifei Wang, Xuehui Sun, Xiaoxue Wang, Lei Zhang, Yang Li
OBJECTIVE: The study was aimed to investigate the impact of CX3CR1 expression on the proliferation and apoptosis of osteoarthrosis (OA) chondrocytes through Wnt/ β-catenin pathway. METHODS: The expression levels of CX3CR1 and Wnt/β-catenin pathway-related genes mRNA and protein in OA chondrocytes were examined by qRT-PCR and western blot. MTT and flow cytometry (FCM) assays were employed to assess cell proliferation, cell cycle and apoptosis. XAV-939, a Wnt/β-catenin pathway inhibitor, was used to inhibit the pathway...
December 4, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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