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Abstract Title:

Heat-treated Lactobacillus plantarum increases the immune responses through activation of natural killer cells and macrophages on in vivo and in vitro models.

Abstract Source:

J Med Microbiol. 2019 Feb 6. Epub 2019 Feb 6. PMID: 30724726

Abstract Author(s):

Phil-Dong Moon, Jin Soo Lee, Hee-Yun Kim, Na-Ra Han, Inyeong Kang, Hyung-Min Kim, Hyun-Ja Jeong

Article Affiliation:

Phil-Dong Moon

Abstract:

PURPOSE: Recently, Lactobacillus plantarum (nF1) has been reported to have immune-enhancing effects in an immunosuppressed-animal model. Natural killer (NK) cells and macrophages play important roles in the immune responses. However, immunomodulatory effects of heat-treated Lactobacillus plantarum-nF1 (hLp-nF1) on the activation of NK cells and macrophages have not been elucidated.

METHODOLOGY: We assessed whether hLp-nF1 could elevate the activation of NK cells and macrophages using cyclophosphamide (CP)-induced immunosuppressed BALB/c mice and RAW 264.7 macrophages. A nitric oxide (NO) assay, enzyme-linked immunosorbent assay, Western blot analysis and NK cell activity assay were used to examine the effects of hLp-nF1 on the immune enhancement.Results/Key findings. Administration of hLp-nF1-elevated NK cell activities and serum levels of TNF-α, IL-2, and IL-12 in CP-induced immunosuppressed mice. In RAW 264.7 macrophages, treatment with hLp-nF1 increased the production of NO and expression of inducible NO synthase. Simultaneously, hLp-nF1 increased the production of TNF-α, IL-2, and IL-6 from RAW 264.7 cells. Finally, hLp-nF1 induced activation of nuclear factor-κB and phosphorylation of IκBα.

CONCLUSION: We identified that hLp-nF1 has an immune-enhancing effect through the activation of NK cells and macrophages. Therefore, these findings suggest that hLp-nF1 would be helpful to enhance the immunity.

Study Type : Animal Study, In Vitro Study
Additional Links
Pharmacological Actions : Immunostimulatory : CK(442) : AC(114)

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