scholarly journals Editorial Commentary: Stem Cells. They Are in the Fat Tissue, Bone Marrow, and Even in the Synovial Fluid of the Knee Joint

2021 ◽  
Vol 37 (3) ◽  
pp. 901-902
Author(s):  
Erik Hohmann
Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1918
Author(s):  
Young-Bum Son ◽  
Yeon Ik Jeong ◽  
Yeon Woo Jeong ◽  
Mohammad Shamim Hossein ◽  
Per Olof Olsson ◽  
...  

Mesenchymal stem cells (MSCs) are promising multipotent cells with applications for cartilage tissue regeneration in stem cell-based therapies. In cartilage regeneration, both bone marrow (BM-MSCs) and synovial fluid (SF-MSCs) are valuable sources. However, the cellular characteristics and chondrocyte differentiation potential were not reported in either of the camel stem cells. The in vitro chondrocyte differentiation competence of MSCs, from (BM and SF) sources of the same Camelus dromedaries (camel) donor, was determined. Both MSCs were evaluated on pluripotent markers and proliferation capacity. After passage three, both MSCs showed fibroblast-like morphology. The proliferation capacity was significantly increased in SF-MSCs compared to BM-MSCs. Furthermore, SF-MSCs showed an enhanced expression of transcription factors than BM-MSCs. SF-MSCs exhibited lower differentiation potential toward adipocytes than BM-MSCs. However, the osteoblast differentiation potential was similar in MSCs from both sources. Chondrogenic pellets obtained from SF-MSCs revealed higher levels of chondrocyte-specific markers than those from BM-MSCs. Additionally, glycosaminoglycan (GAG) content was elevated in SF-MSCs related to BM-MSCs. This is, to our knowledge, the first study to establish BM-MSCs and SF-MSCs from the same donor and to demonstrate in vitro differentiation potential into chondrocytes in camels.


2018 ◽  
Vol 1 (2) ◽  
pp. 135-145 ◽  
Author(s):  
Danna Cao ◽  
Liang Ma ◽  
Xiaodong Han ◽  
Lingqing Dong ◽  
Mengfei Yu ◽  
...  

Author(s):  
J. Christopher Fritton ◽  
Yuki Kawashima ◽  
Hui Sun ◽  
Yingjie Wu ◽  
Wilson Mejia ◽  
...  

Fat tissue, which is composed of lipid-filled adipocytes that accumulate during aging, displaces mineralized tissue and reduces the mechanical integrity bone. Bone marrow adipocytes provide stroma for maintenance of mesencymal stem cells (MSC) and reside at sites of bone turnover (i.e., endosteal surfaces where osteoblasts form new bone), potentially influencing cell activity via a paracrine route.


2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Mikel Sánchez ◽  
Diego Delgado ◽  
Pello Sánchez ◽  
Emma Muiños-López ◽  
Bruno Paiva ◽  
...  

The aim of this study was to assess a novel approach to treating severe knee osteoarthritis by targeting synovial membrane, superficial articular cartilage, synovial fluid, and subchondral bone by combining intra-articular injections and intraosseous infiltrations of platelet rich plasma. We explored a new strategy consisting of intraosseous infiltrations of platelet rich plasma into the subchondral bone in combination with the conventional intra-articular injection in order to tackle several knee joint tissues simultaneously. We assessed the clinical outcomes through osteoarthritis outcome score (KOOS) and the inflammatory response by quantifying mesenchymal stem cells in synovial fluid. There was a significant pain reduction in the KOOS from baseline(61.55±14.11)to week 24(74.60±19.19), after treatment(p=0.008), in the secondary outcomes (symptoms,p=0.004; ADL,p=0.022; sport/rec.,p=0.017; QOL,p=0.012), as well as VAS score (p<0.001) and Lequesne Index(p=0.008). The presence of mesenchymal stem cells in synovial fluid and colony-forming cells one week after treatment decreased substantially from7.98±8.21 MSC/μL to4.04±5.36 MSC/μL(p=0.019)and from601.75±312.30to139.19±123.61  (p=0.012), respectively. Intra-articular injections combined with intraosseous infiltrations of platelet rich plasma reduce pain and mesenchymal stem cells in synovial fluid, besides significantly improving knee joint function in patients with severe knee osteoarthritis. This trial is registered on EudraCT with the number2013-003982-32.


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