Role of nitric oxide-producing and -degrading pathways in coronary endothelial dysfunction in chronic kidney disease

Satoru Tatematsu, Shu Wakino, Takeshi Kanda, Koichiro Honma, Kyoko Yoshioka, Kazuhiro Hasegawa, Naoki Sugano, Masumi Kimoto, Takao Saruta, Koichi Hayashi

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Abstract

Cardiovascular events are accelerated in chronic kidney disease (CKD). Although deranged nitric oxide (NO) pathways and asymmetric dimethylarginine (ADMA) cause endothelial dysfunction, no direct evidence for coronary artery endothelial dysfunction in CKD has been documented. CKD was induced in male dogs by heminephrectomy (1/2Nx) or five-sixths nephrectomy (5/6Nx). After 4 wk, renal ablation reduced GFR (control 76 [54 to 85]; 1/2Nx 38 [29 to 47]; 5/6Nx 15 [12 to 46] ml/min) and elevated plasma ADMA (control 1.88 [1.68 to 2.54]; 1/2Nx 2.51 [2.11 to 3.55]; 5/6Nx 3.84 [2.16 to 3.95] μmol/l). Coronary circulatory responses to acetylcholine revealed marked increases in coronary blood flow in control group (83 ± 17% increment) but blunted responses in 1/2Nx (34 ± 8% increment) and 5/6Nx (20 ± 4% increment). The acetylcholine-induced changes in epicardial arteriolar diameter, using needle-lens probe charge-coupled device videomicroscopy, showed similar results. The responsiveness to sodium nitroprusside did not differ among three groups. Plasma nitrite/nitrate levels decreased in 1/2Nx and 5/6Nx, and the mRNA expressions of dimethylarginine dimethylaminohydrolase-II (DDAH-II), ADMA-degrading enzyme, and endothelial NO synthase (eNOS) in coronary arteries were downregulated in 1/2Nx and 5/6Nx. Finally, 4-wk treatment with all-trans retinoic acid restored the impaired endothelium-dependent vasodilation and reversed the expression of eNOS but not DDAH-II. Coronary endothelial function is impaired in the early stage of CKD. The dysfunction is attributed to the downregulation of eNOS and/or DDAH-II in coronary arteries. Furthermore, the manipulation of NO pathways may constitute a therapeutic strategy for the prevention of coronary dysfunction in CKD.

Original languageEnglish
Pages (from-to)741-749
Number of pages9
JournalJournal of the American Society of Nephrology
Volume18
Issue number3
DOIs
Publication statusPublished - 2007 Mar

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Chronic Renal Insufficiency
Nitric Oxide
Coronary Vessels
Nephrectomy
Nitric Oxide Synthase
Acetylcholine
Down-Regulation
Video Microscopy
Nitric Oxide Synthase Type III
Nitroprusside
Nitrites
Tretinoin
Vasodilation
Nitrates
Lenses
Endothelium
Needles
Dogs
Kidney
Equipment and Supplies

ASJC Scopus subject areas

  • Nephrology

Cite this

Role of nitric oxide-producing and -degrading pathways in coronary endothelial dysfunction in chronic kidney disease. / Tatematsu, Satoru; Wakino, Shu; Kanda, Takeshi; Honma, Koichiro; Yoshioka, Kyoko; Hasegawa, Kazuhiro; Sugano, Naoki; Kimoto, Masumi; Saruta, Takao; Hayashi, Koichi.

In: Journal of the American Society of Nephrology, Vol. 18, No. 3, 03.2007, p. 741-749.

Research output: Contribution to journalArticle

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abstract = "Cardiovascular events are accelerated in chronic kidney disease (CKD). Although deranged nitric oxide (NO) pathways and asymmetric dimethylarginine (ADMA) cause endothelial dysfunction, no direct evidence for coronary artery endothelial dysfunction in CKD has been documented. CKD was induced in male dogs by heminephrectomy (1/2Nx) or five-sixths nephrectomy (5/6Nx). After 4 wk, renal ablation reduced GFR (control 76 [54 to 85]; 1/2Nx 38 [29 to 47]; 5/6Nx 15 [12 to 46] ml/min) and elevated plasma ADMA (control 1.88 [1.68 to 2.54]; 1/2Nx 2.51 [2.11 to 3.55]; 5/6Nx 3.84 [2.16 to 3.95] μmol/l). Coronary circulatory responses to acetylcholine revealed marked increases in coronary blood flow in control group (83 ± 17{\%} increment) but blunted responses in 1/2Nx (34 ± 8{\%} increment) and 5/6Nx (20 ± 4{\%} increment). The acetylcholine-induced changes in epicardial arteriolar diameter, using needle-lens probe charge-coupled device videomicroscopy, showed similar results. The responsiveness to sodium nitroprusside did not differ among three groups. Plasma nitrite/nitrate levels decreased in 1/2Nx and 5/6Nx, and the mRNA expressions of dimethylarginine dimethylaminohydrolase-II (DDAH-II), ADMA-degrading enzyme, and endothelial NO synthase (eNOS) in coronary arteries were downregulated in 1/2Nx and 5/6Nx. Finally, 4-wk treatment with all-trans retinoic acid restored the impaired endothelium-dependent vasodilation and reversed the expression of eNOS but not DDAH-II. Coronary endothelial function is impaired in the early stage of CKD. The dysfunction is attributed to the downregulation of eNOS and/or DDAH-II in coronary arteries. Furthermore, the manipulation of NO pathways may constitute a therapeutic strategy for the prevention of coronary dysfunction in CKD.",
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AU - Kanda, Takeshi

AU - Honma, Koichiro

AU - Yoshioka, Kyoko

AU - Hasegawa, Kazuhiro

AU - Sugano, Naoki

AU - Kimoto, Masumi

AU - Saruta, Takao

AU - Hayashi, Koichi

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