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Lactococcus lactis, a bacterium with probiotic functions and pathogenicity

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Abstract

Lactococcus lactis (L. lactis) is the primary organism for lactic acid bacteria (LAB) and is a globally recognized safe microorganism for the regulation of the intestinal micro-ecological balance of animals and improving the immune performance of the host. L. lactis is known to play a commercially important role in feed fortification, milk fermentation, and vaccine production, but pathogenic L. lactis has been isolated from many clinical cases in recent years, such as the brain of silver carp with Lactococcosis, the liver and spleen of diseased waterfowl, milk samples and padding materials with cow mastitis, and blood and urine from human patients with endocarditis. In dairy farming, where L. lactis has been used as a probiotic in the past, however, some studies have found that L. lactis can cause mastitis in cows, but the lack of understanding of the pathogenesis of mastitis in cows caused by L. lactis has become a new problem. The main objective of this review is to analyze the increasingly serious clinical mastitis caused by L. lactis and combined with the wide application of L. lactis as probiotics, to comprehensively discuss the characteristics and diversity of L. lactis.

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All the data generated or analysed during this study are included in this published article.

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Funding

This work was supported by the Youth Project of Liaoning Provincial Education Department Scientific Research Program (grant number 2021M692232), and the Youth Project of Liaoning Provincial Education Department Scientific Research Program (grant number LSNQN201908).

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Contributions

Fan Wu: Methodology, Visualization, Writing – original draft, formal analysisXinmei Xie: Writing – review & editingTao Du: original draftXiaodan Jiang: original draftMiao Wei: Writing – review & editingTiancheng Wang :Funding acquisition, supervision All authors reviewed the manuscript.

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Correspondence to Tiancheng Wang.

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Wu, F., Xie, X., Du, T. et al. Lactococcus lactis, a bacterium with probiotic functions and pathogenicity. World J Microbiol Biotechnol 39, 325 (2023). https://doi.org/10.1007/s11274-023-03771-5

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  • DOI: https://doi.org/10.1007/s11274-023-03771-5

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