
Immunity Inflammation and Disease, Journal Year: 2024, Volume and Issue: 12(11)
Published: Nov. 1, 2024
ABSTRACT Background Chronic refractory wounds refer to that cannot be repaired timely. Platelet‐rich plasma (PRP) has significant potential in chronic wound healing therapy. The exosomes isolated from PRP were proved exhibit more effectiveness than PRP. However, the therapeutic of on remained elusive. Hence, this study aimed clarify action by evaluating response macrophages exosomes. Methods Pure platelet‐rich (P‐PRP) and leukocyte (L‐PRP) prepared fasting venous blood healthy volunteers. Exosomes extracted P‐PRP L‐PRP using ultracentrifugation identified transmission electron microscopy (TEM), nanoparticle tracking analysis (NTA), western blot. Macrophages obtained inducing THP‐1 cells with phorbol‐12‐myristate‐13 acetate (PMA). internalization into was observed utilizing confocal laser scanning after being labeled PKH67. Cell viability determined CCK‐8 assay. apoptosis measured a flow cytometer. polarization status M1 M2 evaluated detecting their markers. Nitric oxide (NO) detection conducted commercial kit. Results absorbed macrophages. restrained induced Besides, promoted polarization, polarization. Furthermore, NO generation Conclusion viability, macrophages, while increased presented effective effect P‐PRP, making it promising strategy for management.
Language: Английский