In vivo microdialysis sampling: theory and applications

Area of Science:

• Neuroscience
• Pharmacology
• Analytical Chemistry

Background:

• In vivo collection, separation, and characterization of biological samples have advanced significantly.
• Microdialysis has emerged as a leading technique for in vivo tissue sampling due to its reliability.
• The technique is extensively documented, with nearly 3600 scientific papers published by January 1998.

Purpose of the Study:

• To describe the general aspects and diverse applications of microdialysis.
• To highlight the analytical considerations crucial for microdialysis, including probe recovery.
• To discuss advancements in High-Performance Liquid Chromatography (HPLC) techniques relevant to microdialysis.

Main Methods:

• Review of microdialysis as an in vivo sampling methodology.
• Discussion of analytical considerations for microdialysis probe recovery.
• Exploration of contemporary HPLC techniques for analyte characterization.

Main Results:

• Microdialysis enables reliable measurement of endogenous substances (e.g., neurotransmitters) and exogenous agents in various tissues.
• The technique's broad applicability is evidenced by its extensive use in scientific literature.
• Emphasis on analytical aspects, particularly probe recovery and HPLC, is critical for effective microdialysis.

Conclusions:

• Microdialysis is a versatile and validated technique for in vivo biological sample analysis.
• Further development in analytical methods, especially HPLC, enhances the utility of microdialysis.
• The technique holds significant importance for research in neuroscience, pharmacology, and related fields.