Propylthiouracil Attenuates Monocrotaline-Induced Pulmonary Arterial Hypertension in Rats
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概要
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Background: Propylthiouracil (PTU) enhances nitric oxide production and inhibits smooth muscle cell proliferation, suggesting a possible role in the prevention of pulmonary arterial hypertension (PAH). Methods and Results: The 30 male Sprague-Dawley rats were randomized to receive saline injection only (group 1), monocrotaline (MCT) (70 mg/kg) only (group 2) or MCT + 0.1% PTU in drinking water (group 3) given on day 5 after MCT administration. By day 35, western blot showed lower connexin43 (Cx43) and membranous protein kinase C-ε expressions in the right ventricle (RV) of group 2 animals than in the other groups (all P<0.05). Conversely, Cx43 expression in the lung was higher in group 2 than in other groups (all P<0.02). Additionally, mRNA expressions of matrix metalloproteinase-9, tissue necrotic factor-α, and caspase-3 were higher, whereas Bcl-2 and endothelial nitric oxide synthase were lower, in the lungs and RV of group 2 rats than in the other groups (all P<0.05). Moreover, the numbers of alveolar sacs and lung arterioles were also reduced in group 2 than in other groups (all P<0.05), and RV systolic pressure and RV weight were increased in group 2 compared with other groups (all P<0.001). Conclusions: PTU effectively attenuates complications associated with MCT-induced PAH. (Circ J 2009; 73: 1722-1730)
- 2009-08-20
著者
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YIP Hon-Kan
Division of Cardiology, Department of Internal Medicine
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SUN Cheuk-Kwan
Division of General Surgery, Department of Surgery, Chang Gung Memorial Hospital-Kaohsiung Medical C
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Chang Li-Teh
Basic Science, Nursing Department, Meiho Institute of Techology
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Chua Sarah
Division of Cardiology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine
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Yip Hon-Kan
Chang Gung University College of Medicine
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Chua Sarah
Division Of Cardiology Department Of Internal Medicine Chang Gung Memorial Hospital
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Yip Hon-kan
Division Of Cardiology Department Of Internal Medicine Chang Gung Memorial Hospital-kaohsiung Medica
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Sun Cheuk-kwan
Division Of Neurosurgery General Surgery Chang Gung Memorial Hospital-kaohsiung Medical Center Chang
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Kao Ying-hsien
Department Of Anesthesiology Chang Gung Memorial Hospital-kaohsiung Medical Center Chang Gung Univer
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KO Sheung-Fat
Department of Radiology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung Universit
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YUEN Chun-Man
Division of Neurosurgery, Department of Surgery, Chang Gung Memorial Hospital-Kaohsiung Medical Cent
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SHEU Jiunn-Jye
Division of Neurosurgery, Cardiovascular Surgery, Chang Gung Memorial Hospital-Kaohsiung Medical Cen
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Chang Li-teh
Basic Science Nursing Department Meiho Institute Of Technology
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Sheu Jiunn-jye
Division Of Cardiology Department Of Cardiovascular Surgery Chang Gung Memorial Hospital-kaohsiung M
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Yuen Chun-man
Division Of Neurosurgery Department Of Surgery Chang Gung Memorial Hospital-kaohsiung Medical Center
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Yip Hon-kan
Division Of Cardiology Department Of Neurology Chang Gung Memorial Hospital-kaohsiung Medical Center
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Ko Sheung-fat
Department Of Radiology Chang Gung Memorial Hospital-kaohsiung Medical Center Chang Gung University
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Chua Sarah
Division Of Cardiology Chang Gung Memorial Hospital-kaohsiung Medical Center Chang Gung University C
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YEN Chia-Hung
Department of Life Science, National Pingtung University of Science and Technology
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Yip Hon-kan
Division Of Cardiology Chang Gung Memorial Hospital-kaohsiung Medical Center Chang Gung University C
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Ko Sheung-fat
Department Of Radiology Chang Gung Memorial Hospital-kaohsiung Medical Center Chang Gung University
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Sun Cheuk-kwan
Division Of General Surgery Department Of Surgery Kaohsiung Chang Gung Memorial Hospital And Chang Gung University College Of Medicine
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