This study was done to examine whether high salt intake decreases venous distensibility in stroke-prone spontaneously hypertensive rats (SHR-sp). Ten weeks old male SHR-sp and normotensive Wistar-Kyoto rats (WKY) were fed either high (8 %) or normal (0.3 %) salt diet for 3 weeks. The hindquarters venous pressure-volume curves were obtained by infusing Krebs-Henseleit solution retrograde into the inferior vena cava at a rate of 12 or 2.1 ml/min. After 3 weeks of dietary treatment, high salt intake shifted the venous pressure-volume curves at maximal venodilatation caused by nitroprusside toward the pressure axis in SHR-sp but not in WKY. The venous pressure-volume curve during interruption of infusion was also shifted toward the pressure axis in SHR-sp on high salt diet as compared with that in SHR-sp on normal salt diet. Water content and thickness of the smooth
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Original Article
Decreased Hindquarters Venous Distensibility During High Salt Intake in Stroke-Prone Spontaneously Hypertensive Rats
Toshiaki Ashihara Research Institute of Angiocardiology and Cardiovascular Clinic and Department of Anesthesiology, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Japan 812.
, Akira Takeshita Research Institute of Angiocardiology and Cardiovascular Clinic and Department of Anesthesiology, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Japan 812.
, Tsutomu Imaizumi Research Institute of Angiocardiology and Cardiovascular Clinic and Department of Anesthesiology, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Japan 812.
, Kunihiko Yamamoto Research Institute of Angiocardiology and Cardiovascular Clinic and Department of Anesthesiology, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Japan 812.
, Sumio Hoka Research Institute of Angiocardiology and Cardiovascular Clinic and Department of Anesthesiology, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Japan 812.
& Motoomi Nakamura Research Institute of Angiocardiology and Cardiovascular Clinic and Department of Anesthesiology, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Japan 812.
Pages 59-78
Published online: 03 Jul 2009
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Original Article
Decreased Hindquarters Venous Distensibility During High Salt Intake in Stroke-Prone Spontaneously Hypertensive Rats
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