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Updated: May 11, 2026

A Radio-telemetric System to Monitor Cardiovascular Function in Rats with Spinal Cord Transection and Embryonic Neural Stem Cell Grafts

A Radio-telemetric System to Monitor Cardiovascular Function in Rats with Spinal Cord Transection and Embryonic Neural Stem Cell Grafts

Published on: October 7, 2014

Bionic technology revitalizes native baroreflex function in rats with baroreflex failure.

Takayuki Sato¹, Toru Kawada, Masaru Sugimachi

¹Department of Cardiovascular Dynamics, National Cardiovascular Center Research Institute, Suita, Japan. tacsato-kochimed@umin.ac.jp

|August 7, 2002

Summary

This summary is machine-generated.

A new bionic baroreflex system (BBS) effectively restored arterial pressure in rats with baroreflex failure. This artificial vasomotor center technology mimics native baroreflex function, offering a potential treatment for cardiovascular regulation disorders.

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Area of Science:

Biotechnology
Cardiovascular Physiology
Neuroscience

Background:

Baroreflex failure can lead to dangerous arterial pressure instability.
Developing artificial systems to restore physiological functions is a key area of research.

Purpose of the Study:

To develop and test a bionic baroreflex system (BBS) for treating baroreflex failure.
To evaluate the BBS's efficacy in restoring arterial pressure regulation in a rat model.

Main Methods:

A computer-controlled negative feedback system, the artificial vasomotor center, was designed.
Systemic arterial pressure (SAP) was monitored, and sympathetic efferent nerves were stimulated via the celiac ganglion.
The artificial center's operational rule was matched to the native baroreflex using identified transfer functions.

Main Results:

The BBS successfully mitigated arterial pressure drops during head-up tilt (HUT) in rats with baroreflex failure.
SAP fell by 21+/-5 mm Hg at 2s and 15+/-6 mm Hg at 10s with BBS, compared to 34+/-6 mm Hg and 52+/-5 mm Hg without.
The BBS-controlled arterial responses were comparable to those of the native baroreflex.

Conclusions:

The bionic baroreflex system (BBS) effectively revitalized native baroreflex function.
This technology shows promise for treating conditions characterized by baroreflex failure.