• 대한수의학회지
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• 제31권2호
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• pp.155-161
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• 1991

The mechanisms of demyelination in Theiler's murine encephalomyelitis virus (TMEV)-induced chronic central nervous system(CNS) disease are still unclear and are probably multifactoral. This study was intended to culture spinal cord cells isolated from TMEV-induced demyelinating mice. By Percoll density centrifugation of enzymatically dissociated tissue, the cells were collected and then cultured on poly-L-lysine-coated plastic coverslips for 2 weeks. Oligodendrocytes, astrocytes and macrophages were identified using cell-type specific markers. Viral antigens were not present in oligodendrocytes and in astrocytes by double immunofluorescence. Affected mouse oligodendrocytes had less capacities of sheet formation and galactocerebroside immunoreactivity than those of control cell 3. These findings support the hypothesis that immune mediated mechanisms play an important role in the process of demyelination in this animal model.

• Applied Biological Chemistry
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• 제45권2호
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• pp.119-123
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• 2002

매실(Prunus mune Sieb. et Zucc.)의 품종간, 그리고 수확기에 따라 매실추출물의 항산화력을 알아보기 위하여 본 실험을 수행하였다. 먼저 항산화력은 1,1-diphenyl-2-picryl hydrazyl(DPPH), thiocyanate, glutathione-Stransferase와 같은 화학적 방법과 생물학적 방법으로 mouse의 spinal cord culture system에 superoxide anion을 발생시켜 측정했다. 일반적으로 매실 에탄을 추출물은 항산화력을 갖고 있었으며 DPPH, thiocyanate방법에 있어서 butylated hydroxy toluene(BHT)와 비교하였을 때 옥영이 다른 품종보다 97.5%로 제일 높았으나 품종간에 유의성은 없었다. Glutathione-S-transferas방법으로 butylated hydroxy toluene(BHT)와 매실추출물의 항산화력을 비교해본결과 70% 이상의 강한 항산화력을 보여주었다. 생쥐의 척수신경세포 배양시 세포생존율은 옥영, 남고, 고전매추출물을 40 mg처리했을 때 각각 89, 79그리고 62%였고, 6린M의 glutathion을 처리했을때는 90%였다.