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A new method of sampling ascitic fluid from rats.
J D Nagel1, W J Kort, F Varossieau
1Department of Experimental Therapy, Antoni van Leeuwenhoekhuis, Amsterdam, The Netherlands.
Laboratory Animals
|July 1, 1989
Summary
A novel technique allows for easy and reliable sampling of ascitic fluid in rats over 8 hours. This method aids in determining drug concentrations after intraperitoneal chemotherapy administration.
Area of Science:
- Pharmacology and Toxicology
- Surgical Techniques
- Animal Models
Background:
- Ascitic fluid drug concentration is crucial for evaluating intraperitoneal chemotherapy efficacy.
- Previous methods for ascitic fluid sampling in rats are often difficult and unreliable.
- A need exists for a reproducible method to monitor drug levels in this specific biological fluid.
Purpose of the Study:
- To describe a new, reliable, and easy method for serial ascitic fluid sampling in rats.
- To facilitate the determination of drug concentrations in ascitic fluid following intraperitoneal administration.
- To support pharmacokinetic studies of intraperitoneal chemotherapy in rodent models.
Main Methods:
- Implantation of two silicon tubes into the abdominal cavity of rats.
- One tube for controlled drug administration and pressure regulation.
- A second tube for continuous or intermittent ascitic fluid withdrawal over an 8-hour period.
Main Results:
- The described method enables sustained and reliable sampling of ascitic fluid.
- The technique proved effective for monitoring drug concentrations over an extended duration.
- Successful drug administration and fluid withdrawal were achieved without apparent complications.
Conclusions:
- This new surgical technique provides a reliable and accessible approach for ascitic fluid sampling in rats.
- The method is suitable for pharmacokinetic studies of intraperitoneal chemotherapy.
- It offers a valuable tool for preclinical research involving ascites in rodent models.