Abstract | OBJECTIVE: METHODS: In male C57BL/6 mice, transverse aortic constriction (TAC) was employed to create cardiac hypertrophy and heart failure. The involvement of NADPH in TAC mice and cardiac myocytes in the neonatal rat was investigated. RESULTS: The random-fed plasma glucose concentration was higher in TAC mice, and it was reduced to about 100 mg/dL by voglibose (an alpha- glycosidase inhibitor). Four weeks after TAC, both the heart weight/body weight ratio and the lung weight/body weight ratio were lower in the voglibose group than in the TAC group. Echocardiographic and invasive hemodynamic examination showed improvement of left ventricular function in voglibose-treated mice. Voglibose treatment decreased the myocardial expression of an NADPH oxidase subunit (p47phox). Glucose dose-dependently increased both neonatal rat myocyte protein synthesis and the expression of p47phox protein, while apocynin (an NADPH oxidase inhibitor) blocked the enhancement of protein synthesis by high glucose. CONCLUSION: Improvement of glycemic control through voglibose therapy inhibited cardiac remodeling by decreasing myocardial oxidative stress in mice with cardiac pressure overload.
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Authors | Yulin Liao, Seiji Takashima, Hui Zhao, Yoshihiro Asano, Yasunori Shintani, Tetsuo Minamino, Jiyoong Kim, Masashi Fujita, Masatsugu Hori, Masafumi Kitakaze |
Journal | Cardiovascular research
(Cardiovasc Res)
Vol. 70
Issue 1
Pg. 107-16
(Apr 01 2006)
ISSN: 0008-6363 [Print] England |
PMID | 16510136
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Acetophenones
- Fatty Acids, Nonesterified
- Glycoside Hydrolase Inhibitors
- Insulin
- Inositol
- acetovanillone
- NADPH Oxidases
- neutrophil cytosolic factor 1
- Glucose
- voglibose
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Topics |
- Acetophenones
(pharmacology)
- Animals
- Blotting, Western
(methods)
- Body Weight
- Cells, Cultured
- Disease Progression
- Echocardiography
- Fatty Acids, Nonesterified
(blood)
- Glucose
(metabolism, pharmacology)
- Glycoside Hydrolase Inhibitors
- Heart Failure
(drug therapy, metabolism, pathology)
- Hyperglycemia
(drug therapy, metabolism, pathology)
- Inositol
(analogs & derivatives, therapeutic use)
- Insulin
(blood)
- Lung
(pathology)
- Male
- Mice
- Mice, Inbred C57BL
- Models, Animal
- Myocardium
(metabolism, pathology)
- Myocytes, Cardiac
- NADPH Oxidases
(antagonists & inhibitors, metabolism)
- Organ Size
- Oxidative Stress
- Rats
- Reverse Transcriptase Polymerase Chain Reaction
- Ventricular Dysfunction, Left
(drug therapy, metabolism)
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