지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2001.12
- 수록면
- 319 - 329 (11page)
이용수
초록· 키워드
오류제보하기
Endothelin-1 (ET-1) is a recently discovered potent vasoconstrictive peptide. It was first identified in vascular endothelial cells. ET-1 is a 21-amino acid peptide and elicits systemic effects such as stimulation of the production of atrial natriuretic peptide and release of aldosterone and corticosterone. In this study, to examine the role of ET-1 in the bone metabolism, effect of ET-1 on the proliferation and activity of osteoblastic cells was studied using HOS cells as osteoblast model. ET-1 dose-dependently increased the cell proliferation as determined by cell counting and MTT reduction assay after 48hr treatment. Alkaline phosphatase activity was inhibited by ET-1 and showed significant inhibition by 50 and 100 nM ET-1. ET-1 increased NBT reduction by HOS cells dose-dependently showing that ET-1 may increase the superoxide production by osteoblasts. Nitrite concentration in the media of HOS cell culture without cytokine stimulation was negligible and unaffected by ET-1 after 48hr treatment. Finally, after collection and concentration of conditioned media, gelatinase activity produced by HOS cells was determined by zymography. HOS cells can produce and secrete the gelatinase (gelatinase A type as determined by molecular weight of about 65,000) into culture media, however, ET-1 had no effect on the gelatinase activity. These findings suggest that ET-1 may have diverse effects on the proliferation and differentiation of osteoblasts, therefore, it may play an important role in bone metabolism.
목차
Ⅰ. 서 론
Ⅱ. 연구재료 및 연구방법
Ⅲ. 연구결과
Ⅳ. 총괄 및 고찰
Ⅴ. 결 론
참 고 문 헌
- ABSTRACT -
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UCI(KEPA) : I410-ECN-0101-2009-515-013689119