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. 2020 Nov 13;8:e10303. doi: 10.7717/peerj.10303

Table 2. Descriptive overview.

Study PRP concentrations tested(plt/μL or fold of WB) Cell type tested Significant stimulation of cell proliferation Optimal PRP concentrationcell proliferation(Vol/Vol and plt/μLor fold) Optimal PRP concentration cell motility andInvasion (plt/μL) Exocytation and extracellular matrix
Haynesworth et al. (2002) 0.625-fold, 1.25-fold, 2.5-fold and 5-fold HMSC Yes 10% of 1.6 × 106(5 folds over baseline) Not tested Not tested
Fibroblasts Yes
Graziani et al. (2006) 2.5-fold, 3.5-fold and 4.2–5.5-fold (PRP max) Osteoblasts Yes 33.3% of 2.5 × ≈ 0.570 × 106 33.3% of 2.5 × Ca 0.570 ×106 OPG upregulated at 2.5x. OCN and TGF- β1 upregulated at 4.2-5.5x (PRP-max)
Fibroblasts Yes 33.3% of2.5 × ≈ 0.570 × 106
Rughetti et al. (2008) 0.3 ×106, 0.5 × 106, 0.75 ×106, 1,25 ×106, 1.75 ×106, 2.25 ×106, 2.75 ×106, 3.25 ×106, 4. × 106, 5 ×106 and 7 ×106 Endothelial cells (umbilical vein) Yes 1.25 × 106(PRP/media ratio unclear) 1.5 ×106 (PRP/media ratio unclear) Not tested
Anitua et al. (2009) 0.16 ±1 ×106 0.404 ±39 ×106 and 0.767 ±95 ×106/ μ L (2x and 4x of baseline) PRP to media ratio of 20%/80% Fibroblasts (skin) No ________ Not tested Significant increase in collagen I and HA
Fibroblasts (synovium) Yes 20% of 0.767 ± 95 × 106and0.404 ± 39 × 106
Fibroblasts (tendon) Yes 20% of 0.767 ± 95 × 106and 0.404 ± 39 × 106
Hsu, Kuo & Tseng (2009) 1.124 ×106 plt/μ L was added to the wells in concentrations of 2%, 5%, 15%, and 30% Fibroblasts (PDL) Yes 5% of 1.124 × 106of5% (Vol/Vol) Not tested (Angiogenesis Inhibitor in PRP)
Osteoblasts
HUVEC
Mishra et al. (2009) 1 ×106/ μ L(non-activated) added to media at ratios of 1%, 5%, 10% and 20% (Vol/Vol) For HMSC only 10% PRP Fibroblasts (skin) Yes 10% of 1 × 106 Not tested Osteogenic marker RUNx2 doubled. Chondrogenic marker Sox-9 mRNA increased tenfold (HMSC)
HMSC Yes
Chen et al. (2012) Lysate from PRP of 1.0 × 106 added to media at ratios of 0%, 1%, 5%, 10% lysate (Vol/Vol) Dental pulp stem cells Yes 5% of 1.0 × 106 Not tested (Cell differentiation)
Jo et al. (2012) 0.1, 0.2, 0.4, 0.8, 1, 2, 4, 8 and 16 ×106 Tenocytes (rotary cuff) Yes 10% of 4.00 × 106(CaCl2)and10% of 8.00 × 106(CaCl2+ thrombin) Not tested Significant increase in collagen I and III and glycosamino-glycan
Mazzocca et al. (2012) PRPLP: 382.0+/-111.6 ×103/ μ L PRPDS: 472.6+/-224.2 ×103/ μ L PRPHP: 940.1+/-425.8 ×103 Myocytes Yes 10% of PRPLP: 382.0+/-111.6 × 103 Not tested Significantly increased growth factors in all three PRPs. Highest PRPHP(940.1+/- 425.8 ×103/ μ L)
Osteoblasts Yes 10% ofPRPDS: 472.6+/-224.2 × 103
Tenocytes Yes No significance btw PRPLP, PRPDS,and PRPHP
Wang et al. (2012) 1.2–1.9 ×106/ μ L 1%, 5% and 10% (Vol/Vol) Tenocytes Yes 10% of 1.5-1.9 × 106(4x) Not tested Significant increased collagen syntesis in 5-1.9 ×106/ μ L (4x) at 10% PRP2
Sadoghi et al. (2013) 1-, 5-, and 10-fold PRP was obtained by diluting initial PRP in PPP. The PRP/media ratio is unclear. Fibroblasts (rotary cuff) Yes 5-fold ≈ 1.25 × 106(PRP/media ratio unclear) Not tested (Cell differentiation)
Amable et al. (2014) 2.94+/-1.9 ×106 plt/μ L was mixed with culture media ( α-MEM) to obtain following PRP concentrations: 1%, 2.5%, 5%, 10%, 20%, 30%, 40% and 50% (Vol/Vol) HMSC (bone marrow) Yes 10% of 2.94+/-1.9 × 106 Not tested Various reaction to PRP depending on cell type
HMSC (adipose tissue)
HMSC (Wharton‘s Jelly)
Giusti et al. (2014) 0.5 ×106, 1 ×106, 2 ×106, 3 × 106 and 5 ×106/ μ L Tenocytes Yes 0.5 × 106(PRP/media ratio unclear) 0.5 ×106 at 46 h (PRP/media ratio unclear) Significant dose-dependent increase in MMP up to 5 ×106/ μ L and collagen I at 1 ×106 and2 ×106/ μ L
Tavassoli-Hojjati et al. (2016) 1.194 ×106/ μ L diluted in DMEM resulting in concentration of 0.1%, 5% and 50%. Fibroblasts (periodontal ligament) Yes 5% of 1.194 × 106 Not tested Not tested
Berger et al. (2019) Platelet lysate corresponding to platelet levels of 14x, 7x, 3.5x, 1.75x and 0.9x of WB Fibroblasts (Achilles, patellar, and palmaris) Yes 20% of0.875 × 106(Young group) ______ Old group:3.5 × 106 Not tested
20% of3.5 × 106(Old group)
Wang et al. (2019) Platelet lysate corresponding to 0.2 ×106, 0.5 ×106, 0.8 ×106, 1.0 ×106, 1.2 ×106, 1.5 ×106, 2.0 ×106, 2.7 ×106, and 3.0 ×106 HMSC (bone marrow) Yes 10% of 1.5 to 3.0 × 106 Not tested (Cell differentiation)