Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Effects of Fermented Kalopanax pictus on oxidative damage of neurofilament protein

신경세사 단백질의 산화적 손상에 엄나무 발효물이 미치는 영향

  • 강정훈 (청주대학교 바이오메디컬학과)
  • Received : 2018.02.16
  • Accepted : 2018.03.19
  • Published : 2018.03.30
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Abstract

This study was to investigate the effect of the extract(KP-HE) from Kalopanax pictus(KP) fermented with Hericium erinaceum(HE) mycelium on oxidative modification of neurofilament-L(NF-L) which is closely related to neurodegenerative disorders. The oxidative modification of NF-L was induced by AAPH producing peroxyl radicals in solution, and KP, HE, and KP-HE was investigated. KP and HE did not protect NF-L against peroxyl radical-mediated NF-L modification whereas KP-HE significantly prevented NF-L modification induced by peroxyl radical. KP-HE inhibited the formation of dityrosine in oxidative modification of NF-L and stimulated the peroxyl radical scavenging activity. The effects of KP, HE, and KP-HE on the modification of NF-L by tetrahydropapaveroline(THP), a neurotoxin found in patients with Parkinson's disease was investigated. KP-HE also prevented THP-mediated NF-L modification as compared to KP and HE. In addition, KP-HE significantly inhibited the formation of dityrosine in oxidative modified NF-L and enhanced the inhibition of reactive oxygen species(ROS) was generated by THP. The results suggested that KP-HE can contribute to protected cell from oxidative stress was induced by ROS and neurotoxin. Therefore, KP-HE could potentially be used as a valuable functional food ingredient to prevent neurodegenerative disorders.

본 연구는 신경퇴행성질환과 밀접한 관련이 있는 neurofilament-L(NF-L)의 산화적 손상에 엄나무 발효물이 미치는 영향을 알아보고자 하였다. 용액 상에서 peroxyl radical을 생성하는 AAPH를 처리하여 NFL의 산화적 변형을 유도하고 엄나무 추출물(KP), 노루궁뎅이버섯 균사체 추출물(HE), 엄나무 발효물(KP-HE)을 각각 처리하여 어떤 영향을 미치는 지를 알아보고자 하였다. KP와 HE는 peroxyl radical에 의한 NF-L의 산화적 손상을 막지 못했으나 KP-HE는 NF-L의 변형을 효과적으로 억제하였다. KP-HE는 peroxyl radical에 의한 NF-L 변형에서 나타나는 dityrosine 형성을 효과적으로 억제하였고 peroxyl radical 소거활성도 증가시켰다. 파킨슨병 환자에서 발견되는 신경독성물질인 tetrahydropapaveroline(THP)에 의한 NFL의 변형에 KP, HE, KP-HE가 미치는 영향을 관찰하였다. 그 결과 KP-HE는 KP와 HE에 비해서 THP에 의한 NF-L의 변형을 효과적으로 억제하는 것으로 관찰되었다. 또한 KP-HE는 THP에 의한 NF-L 변형에서 나타나는 dityrosine 형성도 효과적으로 억제하였고 THP에 의해 유도되는 활성산소 생성도 현저히 감소시켰다. 이와 같은 결과들은 KP-HE가 활성산소와 신경독성물질에 의한 산화적 스트레스로부터 세포를 보호해 줄 수 있을 것으로 사료되었다. 그러므로 엄나무 발효물은 신경퇴행성질환을 예방할 수 있는 식품소재로 이용될 수 있을 것으로 사료된다.

Keywords

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