Tissue engineering and regenerative medicine have created a demand for biomaterials with specific functions such as the ability to modify the host immune response. The objective of this study was to evaluate the effect of two different pro-resolution lipid mediators, lipoxin A4 (LxA4) and resolvin D1 (RvD1), in the modulation of the inflammatory response to biomaterials through M2 macrophage polarization. This was investigated in vivo using a mouse air-pouch model of inflammation. Our results demonstrated that both LxA4 and RvD1 are able to shift the macrophage response to implanted Ch scaffolds to an M2 reparative response. The injection of these pro-resolution mediators caused a decrease in inflammatory cells recruited to the implant site together with higher numbers of F4/80(+)/CD206(+) cells (M2 macrophages) and lower numbers of F4/80(+)/CCR7(+) cells (M1 macrophages); it also induced a general decrease in several pro-inflammatory cytokines; and caused a significant decrease in the thickness and area of the fibrous capsule formed around the implanted scaffolds. In conclusion, the use of either LxA4 or RvD1 allowed the in vivo control of macrophage phenotypic profile and thus may play a significant role in regenerative medicine applications, namely through modulation of the inflammatory response.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biomaterials.2014.10.035 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Aloe arborescens Standardized Glycosidic Fraction Suppresses Hepatocarcinoma by Modulating TIMP1, MMP9 Genes Expression, and Inflammation/Ki67/TGFβ1 Pathway.
Phytother Res
December 2024
Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Benha University, Toukh, Egypt.
(1) Background and aim: Aloe arborescens Mill. (A. arborescens) is one of the most widely distributed species in the genus Aloe and has garnered widespread recognition for its anticancer properties.
View Article and Find Full Text PDFMicro nutrients as immunomodulators in the ageing population: a focus on inflammation and autoimmunity.
Immun Ageing
December 2024
Department of Biomedical Sciences, Institute of Health, Jimma University, Jimma, 378, Oromia, Ethiopia.
Immunosenescence, the slow degradation of immune function over time that is a hallmark and driver of aging, makes older people much more likely to be killed by common infections (such as flu) than young adults, but it also contributes greatly to rates of chronic inflammation in later life. Such micro nutrients are crucial for modulating effective immune responses and their deficiencies have been associated with dysfunctional immunity in the elderly. In this review, we specifically focused on the contribution of major micro nutrients (Vitamins A, D and E, Vitamin C; Zinc and Selenium) as immunomodulators in ageing population especially related to inflame-ageing process including autoimmunity.
View Article and Find Full Text PDFCholine metabolism modulates cyclic-di-GMP signaling and virulence of Pseudomonas aeruginosa in a macrophage infection model.
BMC Infect Dis
December 2024
Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Disease, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China.
Background: Bacterial pathogens frequently encounter host-derived metabolites during their colonization and invasion processes, which can serve as nutrients, antimicrobial agents, or signaling molecules for the pathogens. The essential nutrient choline (Cho) is widely known to be utilized by a diverse range of bacteria and may undergo conversion into the disease-associated metabolite trimethylamine (TMA). However, the impact of choline metabolism on bacterial physiology and virulence remains largely unexplored.
View Article and Find Full Text PDFBioinformatics based exploration of the anti-NAFLD mechanism of Wang's empirical formula via TLR4/NF-κB/COX2 pathway.
Mol Med
December 2024
Disease Prevention and Health Management Center, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006, Zhejiang, China.
Background: Nonalcoholic fatty liver disease (NAFLD) has developed as a leading public wellness challenge as a result of changes in dietary patterns. Unfortunately, there is still a lack of effective pharmacotherapy methods for NAFLD. Wang's empirical formula (WSF) has demonstrated considerable clinical efficacy in treating metabolic disorders for years.
View Article and Find Full Text PDFCorrection to: Triamcinolone Acetonide Protects Against Light-Induced Retinal Degeneration by Activating Anti-Inflammatory STAT6/Arg1 Signaling in Microglia.
Inflammation
December 2024
Shenzhen Eye Hospital, Shenzhen Eye Institute, JinanUniversity, 18 Zetian Road, Shenzhen, 518040, Guangdong, China.
Microglia are highly specialized resident macrophages in the central nervous system that play a pivotal role in modulating neuroinflammation. Microglial plasticity is essential for their function, allowing them to polarize into proinflammatory M1-like or anti-inflammatory M2-like phenotypes. However, the mechanisms driving M1 and M2 microglial induction during retinal degeneration remain largely unexplored.
View Article and Find Full Text PDFWant 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!