Synthesis, Physicochemical Characterization, and Antibacterial Performance of Silver-Lactoferrin Complexes

Area of Science:

• Biomaterials Science
• Nanotechnology
• Infectious Diseases

Background:

• Antibiotic-resistant bacteria present a significant global health challenge, particularly in chronic wound infections.
• Silver-based compounds are being explored as novel antibacterial agents to combat resistance.
• Lactoferrin, a protein with inherent antimicrobial properties, is a potential carrier for silver ions.

Purpose of the Study:

• To synthesize a novel silver-lactoferrin complex for potential use in infected wound treatment.
• To investigate the formation mechanisms and synthesis conditions influencing the silver-lactoferrin complex.
• To evaluate the antibacterial efficacy and cytotoxicity of the synthesized complex.

Main Methods:

• Synthesis of the silver-lactoferrin complex.
• Batch-sorption studies using Langmuir and Freundlich isotherm models.
• Characterization via spectroscopy, spectrometry, separation techniques, and electron microscopy.
• Assessment of antibacterial activity against selected bacteria and cytotoxicity on L929 cell line.

Main Results:

• A heterogeneous silver-lactoferrin complex containing silver nanoparticles was successfully synthesized.
• The complex demonstrated superior antibacterial activity compared to native bovine lactoferrin and silver ions (Ag+).
• The toxicity of the silver-lactoferrin complex was found to be comparable to that of silver.

Conclusions:

• The silver-lactoferrin complex represents a new generation of antibacterial agents for wound infections.
• Understanding formation mechanisms and synthesis conditions is crucial for optimizing complex properties.
• The enhanced antibacterial efficacy warrants further investigation for clinical applications in wound management.