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Analysis of Mechanisms for Increased Blood Pressure Variability in Rats Continuously Infused with Angiotensin II
http://hdl.handle.net/10458/0002000511
http://hdl.handle.net/10458/000200051139f9095c-7407-442d-88cf-8ba435bd0e07
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article (944 KB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2024-02-22 | |||||
| タイトル | ||||||
| タイトル | Analysis of Mechanisms for Increased Blood Pressure Variability in Rats Continuously Infused with Angiotensin II | |||||
| 言語 | en | |||||
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| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
姜, 丹鳳
× 姜, 丹鳳× Matsuzaki, Minami× Kawagoe, Yukiko× 北村, 和雄× 鶴田, 敏博× 海北, 幸一× 浅田, 祐士郎× 加藤, 丈司 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Objective. We reported that rats infused with angiotensin II (Ang II) are not only a model of hypertension but also of augmented 24 h blood pressure variability (BPV). In this study, we examined the mechanisms for Ang II-induced BPV, focusing on BP, heart rate (HR), baroreceptor reflex sensitivity (BRS), and medial area of the aortic arch. Methods. Nine-week-old male Wistar rats were infused with subcutaneous 5.2 μg/kg/h Ang II with or without oral administration with 30 mg/kg/day azelnidipine for 14 days. BP and HR were recorded every 15 min under an unrestrained condition by a radiotelemetry system, while BPV was evaluated by standard deviation of BP. BRS was quantified by a sequence analysis, and medial thickness of the aortic arch was measured by microscopic examination. Results. BPV increased at days 7 and 14 following continuous infusion of Ang II. Before the infusion, a positive correlation was found between BP and HR, but it became negative at day 7 and then weakened or disappeared at day 14. BRS was slightly impaired at day 7 and significantly lowered at day 14, a phenomenon accompanied by thickened medial area of the aortic arch in Ang II-infused rats. Those Ang II-induced alterations were all significantly attenuated by azelnidipine. Conclusions. The present findings suggest sequential changes in the mechanisms behind augmented BPV in rats continuously infused with Ang II over 14 days. | |||||
| 言語 | en | |||||
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| 内容記述タイプ | Other | |||||
| 内容記述 | Citation: Jiang Danfeng, Matsuzaki Minami, Kawagoe Yukiko, Kitamura Kazuo, Tsuruda Toshihiro, Kaikita Koichi, Asada Yujiro, Kato Johji. Analysis of Mechanisms for Increased Blood Pressure Variability in Rats Continuously Infused with Angiotensin II. Journal of the Renin-Angiotensin-Aldosterone System. 2023; 2023:4201342. doi: 10.1155/2023/4201342. |
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| 言語 | en | |||||
| 書誌情報 |
en : Journal of the Renin-Angiotensin-Aldosterone System 巻 2023, p. 4201342, 発行日 2023-01-04 |
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| 出版者 | ||||||
| 出版者 | Hindawi | |||||
| 言語 | en | |||||
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| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1470-3203 | |||||
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| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1155/2023/4201342 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | Copyright © 2023 Danfeng Jiang et al. | |||||
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| 出版タイプ | VoR | |||||
