메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색

논문 기본 정보

자료유형
학술저널
저자정보
저널정보
대한뇌졸중학회 대한뇌졸중학회지 대한뇌졸중학회지 제1권 제2호
발행연도
1999.1
수록면
231 - 239 (9page)

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색

초록· 키워드

오류제보하기
Background : Accumulation of intracellular calcium is one of the main pathogenic mechanisms of cellular death in brain ischemia. We investigated to the effect of nimodipine on the size of infarction and intracellular calcium concentration in the ischemic rat brain. Methods : Cerebral ischemia was produced by bilateral carotid ligation in 30 Sprague-Dawley rats. Seventeen rats were treated with nimodipine (400 ㎍/㎏) 20 minutes before ligation, and 13 were used as controls. Intracellular calcium concentration was measured with a fluorescent dye fura-2 using a following equation: [Ca2+]i = KD[ (R-Rmin)/(Rmax-R)](Sf2/Sb2) at 30 minutes, 1 hour, 2, and 3 hours after ischemia. The size of infarction was determined by staining the three pieces of mid-coronal section of the brain with 2% 2,3,5-triphenyltetrazolium chloride (TTC) solution. Results : In the nimodipine trial goup, total sizes of infarction were 13.0±2.4%, 16.0±1.9%, 18.7±.2%, 21.0±4.4%, and 33.8±2.7% when ischemic insults were done for 30 minutes, 1 hour,2,3, and 4 hours, respectively, while those in the controls were 13.8±2.7%, 19.1±1.1%, 24.2±1.8%, 37.6±4.3%, and 39.8±2.4%. The sizes of infarction correlated with duration of the ischemia, and were smaller in the nimodipine treated rats except for the 30 minutes-carotid occlusion groups. Intracellular calcium concentrations in the nimodipine treated group were 430±49 nM, 388±19 nM, 367±22nM, and 403 ± 20 nM when ischemic insults were produced for 30 minutes, 1 hour, 2, and 3 hours, respectively, while those in the controls were 305±23 nM, 323±27 nM, 422±43 nM, and 381±55 nM. There was no significant difference in the intracellular calcium concentration between the treated rats and and controls. However, the rate of increase in intracellular calcium concentration was slower in the treated group than in the controls. Conclusions : The sizes of infarction but not intracellular calcium concentrations in cortical brain correlated with the duration of ischemia. Nimodipine did not sufficiently block calcium influx but decreased infarction size. We suggest that the calcium channel blocker can prevent ischemic damage of brain cells through vascular dilatation and blocking of calcium influx. Korean Journal of Stroke 1999;1(2): 231~239

목차

등록된 정보가 없습니다.

참고문헌 (0)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0