Pure platelet-rich plasma and supernatant of calcium-activated P-PRP induce different phenotypes of human macrophages.

Regen Med

Disciplinary Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences, University of Chile, Independencia, Santiago 8380453, Chile.

Published: June 2018

Aim: This study aimed to evaluate the effect of two platelet preparations used in the clinic, pure platelet-rich plasma (P-PRP) and the supernatant of calcium-activated P-PRP (S-PRP), on the phenotype of human macrophages.

Materials & Methods: Surface markers and cytokine production of human monocyte-derived macrophages were analyzed after 24 h stimulation with P-PRP or S-PRP.

Results: P-PRP and S-PRP present no difference in the expression of CD206, a M2 tissue-repair macrophage-related marker. However, these same macrophages presented different levels of CD163, CD86 as well as different IL-10 secretion capacities after 24 h incubation.

Conclusion: These platelet preparations do not have an equivalent biological effect over macrophages, which suggest that they may present different clinical regenerative potentials.

Download full-text PDF

Source
http://dx.doi.org/10.2217/rme-2017-0122DOI Listing

Publication Analysis

Top Keywords

pure platelet-rich
8
platelet-rich plasma
8
supernatant calcium-activated
8
calcium-activated p-prp
8
platelet preparations
8
p-prp s-prp
8
p-prp
5
plasma supernatant
4
p-prp induce
4
induce phenotypes
4

Similar Publications

Allogeneic platelet lysate activates the SIRT1-PINK1/Parkin pathway: A promising approach for improving mitochondrial function in an in vitro model of intervertebral disc degeneration.

Int Immunopharmacol

January 2025

Orthopedics of TCM Senior Department, The Sixth Medical Center of PLA General Hospital, Beijing 100048, China; Navy Clinical College, Fifth School of Clinical Medicine, Anhui Medical University, Hefei, China. Electronic address:

Background: Intervertebral disc degeneration (IVDD) is a common cause of low back pain and spinal issues. Allogeneic platelet lysate (APL) is a blood product for several growth agents. However, only a few studies have revealed that APL can increase autophagy in defective mitochondria by activating the SIRT1-PINK1/parkin pathway while enhancing mitochondrial function to decrease reactive oxygen species (ROS) levels.

View Article and Find Full Text PDF
Article Synopsis
  • Chronic refractory wounds are difficult to heal, and this study explores the potential of exosomes derived from platelet-rich plasma (PRP) to improve healing, particularly through their effect on macrophages.
  • The study involved extracting exosomes from two types of PRP (pure and leukocyte-rich) and assessing their interaction with macrophages, using various scientific techniques to measure cell viability, apoptosis, and polarization.
  • Findings revealed that exosomes from leukocyte-rich PRP (L-PRP) can hinder macrophage viability and induce their apoptosis, while exosomes from pure PRP (P-PRP) encourage a healing-promoting M2 polarization in these immune cells.
View Article and Find Full Text PDF

Osteoarthritis (OA) is a chronic degenerative disorder that causes significant pain and functional limitations. Platelet-rich plasma (PRP) therapy has gained considerable attention in recent years in the treatment of musculoskeletal injuries. In this narrative review, we aim to investigate the role of intra-articular PRP injections in the treatment of knee and hip OA.

View Article and Find Full Text PDF

Effects of Temperature and Time on the Denaturation of Transforming Growth Factor Beta-1 and Cytokines from Bovine Platelet-Rich Gel Supernatants.

Gels

September 2024

Grupo de Investigación Patología Clínica Veterinaria, Departamento de Salud Animal, Universidad de Caldas, Manizales 170004, Colombia.

There is a lack of information about transforming growth factor beta-1 (TGF-β) and cytokines contained in pure platelet-rich plasma (P-PRP) and release from pure-platelet-rich gel supernatants (P-PRGS) might be affected by the temperature and time factors; P-PRP from 6 heifers was activated with calcium gluconate. Thereafter, P-PRG and their supernatants (P-PRGS) were maintained at -80, -20, 4, 21, and 37 °C and collected at 3, 6, 12, 24, 48, 96, 144, 192, 240, and 280 h for subsequent determination of TGF-β, tumor necrosis factor alfa (TNF-α), interleukin (IL)-2, and IL-6; TGF-β concentrations were significantly ( < 0.05) higher in PRGS maintained at 21 and 37 °C when compared to PRGS maintained at 4, -20, and -80 °C; PRGS TNF-α concentrations were not influenced by temperature and time factors.

View Article and Find Full Text PDF

Background Chronic otitis media (COM) often necessitates tympanoplasty to repair the tympanic membrane. While conventional postaural tympanoplasty (PA) is well-established, endoscopic transcanal tympanoplasty (ET) is gaining traction for its minimally invasive benefits. This study aims to compare these two surgical techniques regarding their anatomical and functional outcomes and assess the role of platelet-rich plasma (PRP) in improving these outcomes.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!