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.
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http://dx.doi.org/10.2217/rme-2017-0122 | DOI Listing |
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 PDFImmun Inflamm Dis
November 2024
Department of Otolaryngology, The Second Affiliated Hospital of Guilin Medical University, Guilin, China.
Cureus
September 2024
Internal Medicine, Jinnah Sindh Medical University, Karachi, PAK.
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 PDFGels
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 PDFCureus
August 2024
General Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND.
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 PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!