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Macrophage activity modulation via synergistic effect of a porous substrate and low-field laser therapy Cover

Macrophage activity modulation via synergistic effect of a porous substrate and low-field laser therapy

Open Access
|Jan 2025

Abstract

Purpose: The aim of this study was to investigate the effect of substrate – polycaprolactone (PCL)-based porous membrane modified with rosmarinic acid (RA), (PCL-RA) and to determine the optimal values of low field laser irradiation (LLLT) as stimulators of biological response of RAW 264.7 macrophages.

Methods: The porous polymer membrane was obtained by the phase inversion method, the addition of rosmarinic acid was 1%wt. The reference material was pure polymer membrane. RAW 264.7 were deposited on the material and then irradiated with a laser with a wavelength of 808 nm, a power of 100 mW, an irradiation dose of 2 J/cm2/cell well, applied continuously (C), (100/2/C) or pulsed (I), (100/2/I).

Results: Macrophage irradiation resulted in an increase in their adhesion. Modifying the PCL membranes with rosmarinic acid had no effect on cell viability on day 3 of the cell culture. Irradiation of macrophages cultured on PCL-RA material increased their viability. Irradiation of macrophages cultured on PCL-RA material decreased macrophage secretion of NO and protein and the increase in TNF and MCP-1 secretion was only transient on day 3 of culture.

Conclusions: Macrophage irradiation had a positive effect on macrophage attachment. Modification of PCL membranes with rosmarinic acid influenced the biological activity of macrophages. Culture of macrophages on rosmarinic acid-modified PCL membranes and simultaneous irradiation of LLLT cells resulted in anti-inflammatory effects.

DOI: https://doi.org/10.37190/abb-02451-2024-02 | Journal eISSN: 2450-6303 | Journal ISSN: 1509-409X
Language: English
Page range: 159 - 170
Submitted on: May 12, 2024
Accepted on: Aug 25, 2024
Published on: Jan 28, 2025
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2025 Aleksandra Matuła, Amelia Lizak, Ewa Stodolak-Zych, Beata Stenka, Joanna Homa, Aneta Bac, Aneta Teległów, Anna Ścisłowska-Czarnecka, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.