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Abstract

Medicine

Observation of the Systolic Function of Isolated Right Atria from Guinea Pigs

Published: May 5th, 2023

DOI:

10.3791/65483

1School of Pharmacy, Ningxia Medical University, 2Department of Cardiology, General Hospital of Ningxia Medical University, 3School of Basic Medical Sciences, Ningxia Medical University, 4College of Nursing, Ningxia Medical University, 5Key Laboratory of Ningxia Ethnomedicine Modernization, Ministry of Education Ningxia Medical University, 6Ningxia Regional Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Regional High Incidence Disease

* These authors contributed equally

Abstract

Common chronic heart failure (CHF) is characterized by impaired ventricular filling and/or ejection function, which leads to insatiable cardiac output and increased incidence. The decline in cardiac systolic function is a key factor in the pathogenesis of CHF. Systolic function is simply the filling of oxygenated blood in the left ventricle, followed by the blood being pumped throughout the body during a heartbeat. A weak heart and the inability of the left ventricle to contract appropriately as the heart beats indicate poor systolic function. Many traditional herbs have been suggested to strengthen the systolic function of the heart in patients. However, stable and efficient experimental methods for screening compounds that enhance myocardial contractility are still lacking in the process of ethnic medicine research. Here, taking digoxin as an example, a systematic and standardized protocol is provided for screening compounds that enhance myocardial contractility by using isolated right atria from guinea pigs. The results showed that digoxin could markedly enhance the contractility of the right atrium. This systematic and standardized protocol is intended to serve as a methodological reference for screening the active ingredients of ethnic medicines in the treatment of CHF.

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Keywords Cardiac Systolic Function

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