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자료유형
학술저널
저자정보
이종은 (전남대학교)
저널정보
전남대학교 의과학연구소 전남의대학술지 전남의대학술지 제52권 제2호
발행연도
2016.1
수록면
81 - 90 (10page)

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초록· 키워드

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Nitric oxide (NO) is synthesized by a family of NO synthases (NOS), including neuronal,inducible, and endothelial NOS (n/i/eNOS). NO-mediated effects can be beneficial orharmful depending on the specific risk factors affecting the disease. In hypertension,the vascular relaxation response to acetylcholine is blunted, and that to direct NO donorsis maintained. A reduction in the activity of eNOS is mainly responsible for theelevation of blood pressure, and an abnormal expression of iNOS is likely to be relatedto the progression of vascular dysfunction. While eNOS/nNOS-derived NO is protectiveagainst the development of atherosclerosis, iNOS-derived NO may be proatherogenic. eNOS-derived NO may prevent the progression of myocardial infarction. Myocardialischemia/reperfusion injury is significantly enhanced in eNOS-deficient animals. Animportant component of heart failure is the loss of coronary vascular eNOS activity. A pressure-overload may cause severer left ventricular hypertrophy and dysfunctionin eNOS null mice than in wild-type mice. iNOS-derived NO has detrimental effectson the myocardium. NO plays an important role in regulating the angiogenesis andslowing the interstitial fibrosis of the obstructed kidney. In unilateral ureteral obstruction,the expression of eNOS was decreased in the affected kidney. In triplyn/i/eNOS null mice, nephrogenic diabetes insipidus developed along with reducedaquaporin-2 abundance. In chronic kidney disease model of subtotal-nephrectomizedrats, treatment with NOS inhibitors decreased systemic NO production and inducedleft ventricular systolic dysfunction (renocardiac syndrome).

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