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- Title
Cytokine Regulation from Human Peripheral Blood Leukocytes Cultured In Vitro with Silver Doped Bioactive Glasses Microparticles.
- Authors
Lima, Jefferson Muniz de; Pinheiro Ferreira, Edlainne; Bonan, Roberta Ferreti; Silva-Teixeira, David Nascimento; Goular, Luiz Ricardo; Souza, Joelma Rodrigues de; de Medeiros, Eliton Souto; Bonan, Paulo Rogério Ferreti; Castellano, Lúcio Roberto Cançado
- Abstract
Bioactive glasses (BG) applications include tissue engineering for bone regeneration, coating for implants, and scaffolds for wound healing. BG can be conjugated to ions like silver, which might add some antimicrobial properties to this biomaterial. The immunomodulatory activity of ion-doped bioactive glasses particles was not investigated before. The aim of this work was to evaluate the cytotoxic and immunomodulatory effect of BG and silver-doped bioactive glass (BGAg) in human peripheral blood cells. BG and BGAg samples belonging to the system 58SiO2•(36-x)CaO·6P2O5·xAg2O, where x = 0 and 1 mol%, respectively, were synthesized via sol–gel method and characterized. Cytotoxicity, modulation of cytokine production (TNF-α, IL-1β, IL-6, IL-4, and IL-10), and oxidative stress response were investigated in human polymorphonuclear cells (PMNs) and peripheral blood mononuclear cells (PBMCs) cultures. Cell viability in the presence of BG or BGAg was concentration-dependent. In addition, BGAg presented higher PBMCs toxicity (LC50 = 0.005%) when compared to BG (LC50 = 0.106%). Interestingly, interleukin4 was produced by PBMCs in response to BG and BGAg in absence of phytohemagglutinin (PHA) and did not modulate PHA-induced cytokine levels. Subtoxic concentrations (0.031% for BG and 0.0008% for BGAg) did not change other cytokines in PBMCs nor reactive oxygen species (ROS) production by PMN. However, BG and BGAg particles decreased zymosan-induced ROS levels in PMN. Although ion incorporation increased BG cytotoxicity, the bioactive glass particles demonstrated a in vitro anti-inflammatory potencial. Future studies are needed to clarify the scavenger potential of the BG/BGAg particles/scaffolds as well as elucidate the effect of the anti-inflammatory potential in modulating tissue growth in vivo.
- Subjects
REACTIVE oxygen species; BLOOD; CELL culture; CELL death; CELL surface antigens; CYTOKINES; GLUCANS; GLYCOPROTEINS; IMMUNE system; IMMUNODIAGNOSIS; INFLAMMATORY mediators; INTERLEUKINS; LEUCOCYTES; NEUTROPHILS; PHOSPHORUS; SILICA; SILVER; SILVER compounds; TUMOR necrosis factors; CALCIUM compounds; OXIDATIVE stress; CELL survival; MONONUCLEAR leukocytes; IN vitro studies; PHARMACODYNAMICS
- Publication
BioMed Research International, 2019, p1
- ISSN
2314-6133
- Publication type
Article
- DOI
10.1155/2019/3210530