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KMID : 0603820150210020092
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Journal of Experimental & Biomedical Science
2015 Volume.21 No. 2 p.92 ~ p.102
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Effects of Rice Bran Extracts Fermented with Lactobacillus plantarum on Neuroprotection and Cognitive Improvement in a Rat Model of Ischemic Brain Injury
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Hong Jeong-Hwa
Kim Ji-Yeong
Baek Seung-Eun
Pajaree Ingkasupart
Park Hwa-Jin
Kang Sung-Goo
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Abstract
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This work aimed to study whether rice bran extract fermented with Lactobacillus plantarum (LW) promotes functional recovery and reduces cognitive impairment after ischemic brain injury. Ischemic brain injury was induced by middle cerebral artery occlusion (MCAO) in rats. Four groups were studied, namely the (1) sham, (2) vehicle, (3) donepezil, and (4) LW groups. Animals were injected with LW once a day for 7 days after middle cerebral artery occlusion. LW group showed significantly improved neurological function as compared to the vehicle group, as well as enhanced learning and memory in the Morris water maze. The LW group showed the greatest functional recovery. Moreover, the LW group showed an enhanced more survival cells anti-apoptotic effect in the cortex and neural cell densities in the hippocampal DG and CA1. In addition, this group showed enhanced expression of neurotrophic factors, antioxidant genes, and the acetylcholine receptor gene, as well as synaptophysin (SYP), Fox-3 (NeuN), doublecortin (DCX), and choline acetyltransferase (ChAT) proteins. Our findings indicate that LW treatment showed the largest effects in functional recovery and cognitive improvement after ischemic brain injury through stimulation of the acetylcholine receptor, antioxidant genes, neurotrophic factors, and expression of NeuN, SYP, DCX, and ChAT.
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KEYWORD
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Rice bran, Lactobacillus plantarum, Fermentation, Cognition, Ischemia
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