Applied Microscopy

Korean Society of Microscopy (한국현미경학회)
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Effects of High-salt Diet on the Mouse Adrenal Medulla

고염식이가 흰 생쥐의 부신 수질에 미치는 효과

  • Moon, Young-Wha (Department of Cell Medicine & Biology, College of Medicine Catholic University) ;
  • Kang, Wha-Sun (Department of Cell Medicine & Biology, College of Medicine Catholic University)
  • 문영화 (가톨릭 대학교 의과대학 자연과학교실 세포의학.생물학과) ;
  • 강화선 (가톨릭 대학교 의과대학 자연과학교실 세포의학.생물학과)
  • Published : 2003.12.01
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Abstract

Exposure to stressful stimuli is known to activate the peripheral sympathetic nervous system and the adrenal gland. In this study, we evaluated the effects of high-salt diet on the mouse adrenal medulla using the tyrosine hydroxylase (TH) immunohistochemistry and the transmission electron microscopic observation. Immunoreactivity for TH was increased after high-salt diet. Especially, the TH immunoreactivity was stronger in 4 days high-salt diet mouse than that of 4 weeks. TH immunoreactivity was mainly present in the cytoplasm and granules of the noradrenaline cells. After high-salt diet, the noradrenaline cells exhibited the ultrastructural alterations consisting of areas of empty cytoplasm, expanded granules, and some damaged mitochondria. These results suggest that high-salt diet may be a factor of stressful stimuli on the mouse.

스트레스는 교감신경계와 부신을 활성화시킨다. 본 연구에서는 고염식이가 흰 생쥐의 부신수질에 미치는 영향을 tyrosine hydroxylase (TH) 면역염색법과 투과 전자현미경을 이용한 미세구조적 관찰로 규명하였다. 1. 부신수질의 TH 면역반응은 고염식이 후 증가하였으며 특히 고염식이를 4주간 시행한 경우보다 4일간 시행한 흰 생쥐에서 더 강하게 관찰되었다. 2. TH 면역반응은 부신수질을 구성하는 세포들 중 노르아드레날린 세포의 세포질과 과립들에서 주로 나타났다. 3. 고염식이를 시행한 흰 생쥐 부신수질의 노르아드레날린 세포에서는 세포질 내에 비어있는 공간들, 분비과립이 팽대되어 과립 내 물질이 한 쪽으로 치우친 형태 및 손상된 미토콘드리아등의 특징들이 관찰되었다. 이와 같은 결과는 고염식이가 스트레스를 유발하는 요인이 될 수 있음을 시사해준다.

Keywords

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