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Fully automated experiments with isolated organs in vitro.

J S de Graaf, C J de Vos, H J Steenbergen

Journal of Pharmacological Methods

|September 1, 1983

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This study introduces an automated system for in vitro pharmacological experiments, enhancing precision and efficiency in drug testing with isolated tissues. The automated approach significantly improves accuracy and reduces animal usage in drug discovery.

Area of Science:

Pharmacology
Biomedical Engineering
Drug Discovery

Background:

In vitro pharmacological experiments with isolated tissues are crucial for drug development.
Manual methods for these experiments can be time-consuming and lack precision.
There is a need for more efficient and accurate automated systems.

Purpose of the Study:

To describe a fully automated system for conducting pharmacological in vitro experiments.
To demonstrate the advantages of this automated system over traditional manual methods.
To highlight the system's capability for precise data acquisition and analysis.

Main Methods:

An organ bath system equipped with a gradient pump for agonist concentration, pumps for fluid/antagonist dispensing, and an oxygenation system.

Related Experiment Videos

A transducer to measure tissue response (length/tension) connected to a mini-computer (DEC PDP-11).

Computer-controlled experimental procedures, including gradient management and data processing for log-concentration response curves.

Main Results:

The automated system precisely controls agonist concentration gradients and measures tissue responses.
The system generates alpha-numeric and graphical results, facilitating data accumulation and Schild-plot generation.
Demonstrated significantly greater precision compared to manual methods.

Conclusions:

The automated system offers substantial advantages in precision and efficiency for in vitro pharmacological studies.
The system allows for continuous 24-hour operation and simultaneous experiments.
This automation reduces the number of animals required for research, promoting ethical practices.