Disruption of elastic lamellae in the aorta by D-penicillamine and its effect on vaso-regulation in rats
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- Muto Takafumi
- Department of Biopharmaceutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science
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- Miyajima Atsushi
- Department of Biopharmaceutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science
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- Bamba Masaru
- Department of Biopharmaceutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science
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- Hirota Takashi
- Department of Biopharmaceutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science
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We assessed the effects of D-penicillamine (D-PA) on cross-linkages in elastin and vaso-regulatory function in rats. After administration of D-PA at a dose of 100 mg/kg/day for 7 weeks to adult and young rats, the thoracic aortas were isolated. The elastic lamellae in the aorta were disrupted histopathologically in all the treated groups. The content of cross-linkages in elastin, i.e. desmosine and isodesmosine, which gives elasticity to the aortic wall, was significantly reduced in the D-PA treated groups versus the control groups. On the other hand, the content of pyridinoline as a marker of insoluble collagen was significantly reduced in the D-PA treated groups, even though the total collagen content was not changed. In addition, after 7 weeks of treatment with D-PA, the change between systolic blood pressure before and after sympathetic stimulation (Δ-SBP) by L-epinephrine was about 2.5-fold larger than that in the control group. Similar results were obtained using angiotensin II or ouabain instead of L-epinephrine. These findings demonstrated that D-PA disrupted elastic lamellae of the rat aorta by reduction of the cross-linkages in elastin and collagen, which caused dysfunction of vaso-regulation. Also, they suggested the possibility that long-term treatment with D-PA in patients could cause a decrease in vaso-regulatory function and could increase the risk of cardiovascular events.
収録刊行物
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- The Journal of Toxicological Sciences
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The Journal of Toxicological Sciences 38 (5), 707-717, 2013
一般社団法人 日本毒性学会
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詳細情報 詳細情報について
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- CRID
- 1390001204904394880
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- NII論文ID
- 10031191730
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- NII書誌ID
- AN00002808
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- COI
- 1:CAS:528:DC%2BC3sXhslyitb3F
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- ISSN
- 18803989
- 03881350
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- NDL書誌ID
- 024934149
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- PubMed
- 24025788
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 使用不可