Abstract
Schiff bases and their copper complexes have been previously studied for their anti-inflammatory, anti-tumor as well as anti-microbial activities. Schiff bases can be derivatized to gain photoluminiscence capacity. This property of the schiff bases enables the transfer of the electrons upon absorption of the light at a specific wavelength. In this study, we exploited this attribute of novel copper bearing schiff bases and tested their photodynamic biological activities. These compounds exerted photodynamic anti-inflammatory activities on the in vitro activated mammalian macrophages. Compared with salicylic acid control groups, these novel schiff bases had stronger activity which became more prominent with photo-induction. Moreover, they also had anti-microbial activity on gram negative bacteria E.coli and gram positive bacteria S.aureus.This anti-microbial activity was stronger than that of Neomycin on both bacterial strains. Our results suggest their potential use as anti-inflammatory and anti-microbial agents both in the dark as well as after photo-induction.
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Abbreviations
- TNFα:
-
tumor necrosis factor α
- LPS:
-
lipopolysaccharide
- ELISA:
-
enzyme linked immunosorbent assay
- PDT:
-
photodynamic therapy
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We greatly appreciate the guidance and support of Dr. Juan Anguita from CIC Biogune, Spain.
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Highlights
• Schiff base derivatives had anti-inflammatory activity.
• They decreased pro-inflammatory cytokine secretion by macrophages.
• They lacked cytotoxicity or immunostimulant activity.
• Addition of copper to the structure created a photo responsive anti-inflammatory agent
• These compounds also had strong dark anti-microbial activities.
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Ayaz, F., Gonul, I., Demirbag, B. et al. Novel Copper Bearing Schiff Bases with Photodynamic Anti-Inflammatory and Anti-Microbial Activities. Appl Biochem Biotechnol 191, 716–727 (2020). https://doi.org/10.1007/s12010-019-03223-7
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DOI: https://doi.org/10.1007/s12010-019-03223-7