Artery Research

Volume 1, Issue S1, June 2006, Pages S45 - S45

P.076 VENTRICULAR-ARTERIAL COUPLING IN A RAT MODEL OF REDUCED ARTERIAL COMPLIANCE

Authors
N. Stergiopulos*1, D. Jegger1, R. Da Silva1, I. Lartaud2, J. Atkinson1, L. von Segesser1
1EPFL, Lausanne, Switzerland,
2University of Nancy, Nancy, France,
3CHUV, Lausanne, Switzerland
Available Online 13 June 2007.
DOI
10.1016/S1872-9312(07)70099-6How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Rodent models of isolated systolic hypertension (ISH) are rare. One exception is the vitamin D and nicotine (VDN) model, in which arterial calcification raises arterial stiffness and vascular impedance. Complete analysis of the effect of VDN on ventricular-arterial interaction is lacking. Wistar rats were treated with VDN (VDN group, n = 9) and a control untreated group (CTRL, n = 10) was included. At sacrifice, invasive indexes of cardiac function were obtained using a conductance catheter. Aortic pressure and flow were measured to derive impedance and ventricular-arterial interaction. VDN caused significant increases in systolic (138±6 mmHg vs. 116±13 mmHg) and pulse pressure (42±10 mmHg vs. 26±4 mmHg). Arterial compliance decreased (0.12±0.08 ml/mmHg vs. 0.21±0.04 ml/mmHg CTRL) and pulse wave velocity increased significantly (8.8±2.5m/s vs. 5.1±2.0m/s CTRL). Elastic modulus rose in the VDN group. Preload recruitable stroke work and end-systolic elastance were both elevated in the VDN group thus decreasing the ratio of arterial elastance over end-systolic elastance (0.94±0.30 vs. 1.57±0.60 CTRL). Wave reflection was augmented in the VDN group, expressed by the increase in the wave reflection coefficient (0.63±0.06 vs. 0.52±0.05 CTRL), as well as the amplitude of the reflected pressure wave (13.3±3.1 mmHg vs. 8.4±1.0 mmHg CTRL). VDN lead to development of ISH and provoked alterations in cardiac function, arterial impedance, arterial function, and ventricular-arterial interaction, which in many aspects are similar to effects of an aged and stiffened arterial tree. The VDN model may be a useful model to study the patho-physiological effects of increased arterial stiffness.

Journal
Artery Research
Volume-Issue
1 - S1
Pages
S45 - S45
Publication Date
2007/06/13
ISSN (Online)
1876-4401
ISSN (Print)
1872-9312
DOI
10.1016/S1872-9312(07)70099-6How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - JOUR
AU  - N. Stergiopulos*
AU  - D. Jegger
AU  - R. Da Silva
AU  - I. Lartaud
AU  - J. Atkinson
AU  - L. von Segesser
PY  - 2007
DA  - 2007/06/13
TI  - P.076 VENTRICULAR-ARTERIAL COUPLING IN A RAT MODEL OF REDUCED ARTERIAL COMPLIANCE
JO  - Artery Research
SP  - S45
EP  - S45
VL  - 1
IS  - S1
SN  - 1876-4401
UR  - https://doi.org/10.1016/S1872-9312(07)70099-6
DO  - 10.1016/S1872-9312(07)70099-6
ID  - Stergiopulos*2007
ER  -