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Abstract Title:

Neuroprotective Effects of Heat-Killed Lactobacillus plantarum 200655 Isolated from Kimchi Against Oxidative Stress.

Abstract Source:

Probiotics Antimicrob Proteins. 2021 Jan 17. Epub 2021 Jan 17. PMID: 33454870

Abstract Author(s):

Min-Jeong Cheon, Na-Kyoung Lee, Hyun-Dong Paik

Article Affiliation:

Min-Jeong Cheon

Abstract:

Oxidative stress plays an important role in exacerbating neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, and Huntington's disease. In a previous study, Lactobacillus plantarum 200655 was shown to possess probiotic and antioxidant potential. The current study aimed to evaluate the neuroprotective effects of heat-killed L. plantarum 200655. We incubated intestinal cells (HT-29) with heat-killed L. plantarum 200655 in a conditioned medium (CM) and found that the brain-derived neurotrophic factor (BDNF) mRNA level was elevated in the HT-29 cells and the CM contained high concentrations of BDNF. The CM protected neuroblastoma cells (SH-SY5Y) from hydrogen peroxide (HO)-induced toxicity. Moreover, the CM increased BDNF and tyrosine hydroxylase (TH) mRNA expression and significantly reduced the apoptosis-related Bax/Bcl-2 ratio in HO-treated SH-SY5Y cells. At the protein level, the CM resulted in downregulation of caspase-3. These results indicate that L. plantarum 200655 might be used as a prophylactic functional ingredient to prevent neurodegenerative disease.

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