Discussion : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [2]
Growth factor release is a key function of these fibrin clots for tissue regeneration. Our previous study [16] demonstrated that CGF membranes compressed by the stainless steel compression device contain significantly higher levels of growth factors even after releasing approximately 85% of exudate. Repeated rinsing with PBS failed to completely remove the growth factors from CGF membranes. The rinsed CGF membranes retained angiogenic effects in ex vivo and in vitro experimental systems. Considered together, these data imply that significant amounts of the growth factors are secured in CGF membranes, specifically in fibrin fibers. Similar functions were found in A-PRF and PPTF membranes. Therefore, it is thought that two distinct mechanisms are involved in controlled release of growth factors in exudate-depleted fibrin membranes: growth factors adsorbed to fibrin fibers and growth factors caged in platelets aggregated on fibrin fibers.
The initial phase of growth factor release from fibrin clots is mainly attributed to simple diffusion. In contrast, the late phase, i.e., the delayed growth factor release, is probably due to degradation of fibrin fibers and platelet membranes. We think that these combined releasing mechanisms determine how long the individual fibrin clot types last for tissue regeneration. This complex process of growth factor release from PRF (CGF) membranes should be investigated more carefully by developing appropriate experimental conditions.
Serial posts:
- Abstract : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF)
- Background : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [1]
- Background : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [2]
- Methods : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [1]
- Methods : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [2]
- Methods : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [3]
- Results : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF)
- Discussion : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [1]
- Discussion : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [2]
- Conclusions : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF)
- Abbreviations : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF)
- References : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [1]
- References : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [2]
- Author information : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [1]
- Author information : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF) [2]
- Rights and permissions : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF)
- About this article : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF)
- Table 1 Similarity in size and stretching property of A-PRF and CGF membranes : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF)
- Table 2 Comparison of water content of A-PRF, CGF, and PPTF clots : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF)
- Table 3 Summaries of preparation procedures, relative mechanical, degradation, and related properties of A-PRF, CGF and PPTF : Mechanical and degradation properties of advanced platelet-rich fibrin (A-PRF), concentrated growth factors (CGF), and platelet-poor plasma-derived fibrin (PPTF)
- Fig. 1. Surface microstructures of A-PRF, CGF, and fibrin clots prepared by PPP + CaCl2 and PPTF (fibrin clots prepared by PPP and thrombin). Similar observations were obtained from other three independent blood samples. Scale bar = 10 μm. Note: the same magnification (×9000) was used in all the SEM images shown here : Mechanical and degradation properties of advanced
- Fig. 2. Representative stress-strain curves for A-PRF and CGF membranes and mechanical properties (Young’s modulus, strain at break, and maximum stress) of A-PRF, CGF, and PPTF membranes. N = 3–9 : Mechanical and degradation properties of advanced
- Fig. 3. Enzymatic degradability of A-PRF, CGF, and PPTF membranes. Each membrane disk (φ8 mm, 1 mm thick) was immersed in PBS containing trypsin and incubated in a CO2 incubator. N = 4. The asterisks represent significant differences (P < 0.05) compared with A-PRF at the same time points : Mechanical and degradation properties of advanced