Masako Fujioka-Kobayashi1,2,3, Richard J Miron1, Maria Hernandez1, Umadevi Kandalam4, Yufeng Zhang5, Joseph Choukroun6. 1. Department of Periodontology, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL. 2. Department of Cranio-Maxillofacial Surgery, University of Bern, Bern, Switzerland. 3. Department of Oral Surgery, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan. 4. Department of Pediatric Dentistry, College of Dental Medicine, Nova Southeastern University. 5. Department of Oral Implantology, University of Wuhan, Wuhan, China. 6. Pain Clinic, Nice, France.
Abstract
BACKGROUND: Over the past decade, use of leukocyte platelet-rich fibrin (L-PRF) has gained tremendous momentum in regenerative dentistry as a low-cost fibrin matrix used for tissue regeneration. This study characterizes how centrifugation speed (G-force) along with centrifugation time influence growth factor release from fibrin clots, as well as the cellular activity of gingival fibroblasts exposed to each PRF matrix. METHODS: Standard L-PRF served as a control (2,700 revolutions per minute [rpm]-12 minutes). Two test groups using low-speed (1,300 rpm-14 minutes, termed advanced PRF [A-PRF]) and low-speed + time (1,300 rpm-8 minutes; A-PRF+) were investigated. Each PRF matrix was tested for growth factor release up to 10 days (eight donor samples) as well as biocompatibility and cellular activity. RESULTS: The low-speed concept (A-PRF, A-PRF+) demonstrated a significant increase in growth factor release of platelet-derived growth factor (PDGF), transforming growth factor (TGF)-β1, epidermal growth factor, and insulin-like growth factor, with A-PRF+ being highest of all groups. Although all PRF formulations were extremely biocompatible due to their autogenous sources, both A-PRF and A-PRF+ demonstrated significantly higher levels of human fibroblast migration and proliferation compared with L-PRF. Furthermore, gingival fibroblasts cultured with A-PRF+ demonstrated significantly higher messenger RNA (mRNA) levels of PDGF, TGF-β, and collagen1 at either 3 or 7 days. CONCLUSIONS: The findings from the present study demonstrate modifications to centrifugation speed and time with the low-speed concept favor an increase in growth factor release from PRF clots. This, in turn, may directly influence tissue regeneration by increasing fibroblast migration, proliferation, and collagen mRNA levels. Future animal and clinical studies are now necessary.
BACKGROUND: Over the past decade, use of leukocyte platelet-rich fibrin (L-PRF) has gained tremendous momentum in regenerative dentistry as a low-cost fibrin matrix used for tissue regeneration. This study characterizes how centrifugation speed (G-force) along with centrifugation time influence growth factor release from fibrin clots, as well as the cellular activity of gingival fibroblasts exposed to each PRF matrix. METHODS: Standard L-PRF served as a control (2,700 revolutions per minute [rpm]-12 minutes). Two test groups using low-speed (1,300 rpm-14 minutes, termed advanced PRF [A-PRF]) and low-speed + time (1,300 rpm-8 minutes; A-PRF+) were investigated. Each PRF matrix was tested for growth factor release up to 10 days (eight donor samples) as well as biocompatibility and cellular activity. RESULTS: The low-speed concept (A-PRF, A-PRF+) demonstrated a significant increase in growth factor release of platelet-derived growth factor (PDGF), transforming growth factor (TGF)-β1, epidermal growth factor, and insulin-like growth factor, with A-PRF+ being highest of all groups. Although all PRF formulations were extremely biocompatible due to their autogenous sources, both A-PRF and A-PRF+ demonstrated significantly higher levels of human fibroblast migration and proliferation compared with L-PRF. Furthermore, gingival fibroblasts cultured with A-PRF+ demonstrated significantly higher messenger RNA (mRNA) levels of PDGF, TGF-β, and collagen1 at either 3 or 7 days. CONCLUSIONS: The findings from the present study demonstrate modifications to centrifugation speed and time with the low-speed concept favor an increase in growth factor release from PRF clots. This, in turn, may directly influence tissue regeneration by increasing fibroblast migration, proliferation, and collagen mRNA levels. Future animal and clinical studies are now necessary.
Authors: David Peñarrocha-Oltra; Antonio Pallarés-Serrano; Pablo Glera-Suarez; David Soto-Peñaloza; Miguel Peñarrocha-Diago Journal: J Clin Exp Dent Date: 2020-11-01
Authors: Richard J Miron; Giovanni Zucchelli; Michael A Pikos; Maurice Salama; Samuel Lee; Vincent Guillemette; Masako Fujioka-Kobayashi; Mark Bishara; Yufeng Zhang; Hom-Lay Wang; Fatiha Chandad; Cleopatra Nacopoulos; Alain Simonpieri; Alexandre Amir Aalam; Pietro Felice; Gilberto Sammartino; Shahram Ghanaati; Maria A Hernandez; Joseph Choukroun Journal: Clin Oral Investig Date: 2017-05-27 Impact factor: 3.573
Authors: Daniel Clark; Yogalakshmi Rajendran; Sarmad Paydar; Sunita Ho; Darren Cox; Mark Ryder; John Dollard; Richard T Kao Journal: J Periodontol Date: 2018-04 Impact factor: 6.993