Dual Effect of Platelet Lysate on Human Articular Cartilage: A Maintenance of Chondrogenic Potential and a Transient Proinflammatory Activity Followed by an Inflammation Resolution

2013 ◽  
Vol 19 (11-12) ◽  
pp. 1476-1488 ◽  
Author(s):  
Rui Cruz Pereira ◽  
Monica Scaranari ◽  
Roberto Benelli ◽  
Paolo Strada ◽  
Rui L. Reis ◽  
...  
Keyword(s):  
Articular Cartilage ◽  
Platelet Lysate ◽  
Human Articular Cartilage ◽  
Dual Effect ◽  
Chondrogenic Potential ◽  
Proinflammatory Activity ◽  
Inflammation Resolution

scholarly journals Progenitor Cells Activated by Platelet Lysate in Human Articular Cartilage as a Tool for Future Cartilage Engineering and Reparative Strategies

Cells ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 1052 ◽  
Author(s):  
Simonetta Carluccio ◽  
Daniela Martinelli ◽  
Maria Elisabetta Federica Palamà ◽  
Rui Cruz Pereira ◽  
Roberto Benelli ◽  
...  
Keyword(s):  
Articular Cartilage ◽  
Progenitor Cells ◽  
Articular Chondrocytes ◽  
Ex Vivo ◽  
Primary Cultures ◽  
Platelet Lysate ◽  
Cartilage Explants ◽  
Cartilage Tissue ◽  
Human Articular Cartilage

Regenerative strategies for human articular cartilage are still challenging despite the presence of resident progenitor cell population. Today, many efforts in the field of regenerative medicine focus on the use of platelet derivatives due to their ability to reactivate endogenous mechanisms supporting tissue repair. While their use in orthopedics continues, mechanisms of action and efficacy need further characterization. We describe that the platelet lysate (PL) is able to activate chondro-progenitor cells in a terminally differentiated cartilage tissue. Primary cultures of human articular chondrocytes (ACs) and cartilage explants were set up from donor hip joint biopsies and were treated in vitro with PL. PL recruited a chondro-progenitors (CPCs)-enriched population from ex vivo cartilage culture, that showed high proliferation rate, clonogenicity and nestin expression. CPCs were positive for in vitro tri-lineage differentiation and formed hyaline cartilage-like tissue in vivo without hypertrophic fate. Moreover, the secretory profile of CPCs was analyzed, together with their migratory capabilities. Some CPC-features were also induced in PL-treated ACs compared to fetal bovine serum (FBS)-control ACs. PL treatment of human articular cartilage activates a stem cell niche responsive to injury. These facts can improve the PL therapeutic efficacy in cartilage applications.

scholarly journals Infarct in the Heart: What’s MMP-9 Got to Do with It?

Biomolecules ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 491
Author(s):  
Mediha Becirovic-Agic ◽  
Upendra Chalise ◽  
Michael J. Daseke ◽  
Shelby Konfrst ◽  
Jeffrey D. Salomon ◽  
...  
Keyword(s):  
Wound Healing ◽  
Cardiac Repair ◽  
Dual Effect ◽  
Strong Connection ◽  
The Past ◽  
Left Ventricle Remodeling ◽  
Inflammation Resolution ◽  
Metalloproteinase 9 ◽  
Cell Transition

Over the past three decades, numerous studies have shown a strong connection between matrix metalloproteinase 9 (MMP-9) levels and myocardial infarction (MI) mortality and left ventricle remodeling and dysfunction. Despite this fact, clinical trials using MMP-9 inhibitors have been disappointing. This review focuses on the roles of MMP-9 in MI wound healing. Infiltrating leukocytes, cardiomyocytes, fibroblasts, and endothelial cells secrete MMP-9 during all phases of cardiac repair. MMP-9 both exacerbates the inflammatory response and aids in inflammation resolution by stimulating the pro-inflammatory to reparative cell transition. In addition, MMP-9 has a dual effect on neovascularization and prevents an overly stiff scar. Here, we review the complex role of MMP-9 in cardiac wound healing, and highlight the importance of targeting MMP-9 only for its detrimental actions. Therefore, delineating signaling pathways downstream of MMP-9 is critical.

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