A comparative study of antimicrobial activity of differently-synthesized chitosan nanoparticles against bovine mastitis pathogens.

Soft Matter
María S OrellanoCarina Porporatto

Abstract

The greatest concern in dairy farming nowadays is bovine mastitis (BM), which results mainly from bacterial colonization of the mammary gland. Antibiotics are the most widely used strategy for its prevention and treatment, but overuse has led to growing antimicrobial resistance. Pathogens have also developed other mechanisms to persist in the udder, such as biofilm formation and internalization into bovine epithelial cells. New therapies are therefore needed to reduce or replace antibiotic therapies. In a previous study, we found that chitosan nanoparticles (Ch-NPs) have considerable potential for the treatment of BM. The aim of the present study was to evaluate the antimicrobial activity of differently-synthesized Ch-NPs against BM pathogens and their toxicity in bovine cells in vitro, to further explore the attributes of Ch-NPs for the prevention and treatment of intramammary infections. We also looked into their ability to inhibit biofilm formation and prevent the internalization of S. aureus into mammary epithelial cells. Finally, since an interesting approach for BM prevention is to enhance the host's immune response, we studied whether Ch-NPs could promote the release of pro-inflammatory cytokines in mammary epithelial ce...Continue Reading

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Citations

Jun 3, 2021·Animals : an Open Access Journal From MDPI·Andra Sabina Neculai-ValeanuŞteofil Creangă

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Methods Mentioned

BETA
enzyme-linked immunosorbent assay
ELISA

Software Mentioned

GraphPad Prism

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