Glucuronic acid conjugates

Area of Science:

• Pharmacokinetics and Drug Metabolism
• Analytical Chemistry

Background:

• Glucuronide conjugates are crucial metabolites of many drugs and endogenous compounds.
• Accurate quantification of these conjugates in biological fluids is essential for pharmacokinetic studies and therapeutic drug monitoring.

Purpose of the Study:

• To review and summarize the analytical methods used for assaying glucuronide conjugates in body fluids.
• To identify the predominant techniques employed in the literature from 1990-1997.

Main Methods:

• Literature review of 78 references published between 1990 and 1997.
• Categorization of glucuronide conjugates by drug class (e.g., analgesics, anti-cancer agents, opioids) and miscellaneous compounds.
• Analysis of cited assay techniques, including gas chromatography, capillary electrophoresis, and high-performance liquid chromatography.

Main Results:

• Reversed-phase high-performance liquid chromatography (RP-HPLC) was the most frequently cited method, accounting for 62 out of 78 references.
• Methods primarily focused on glucuronide conjugates of drug metabolites.
• Gas chromatography and capillary electrophoresis were less commonly reported.

Conclusions:

• RP-HPLC is the established and preferred method for the assay of glucuronide conjugates in biological matrices.
• The review highlights the importance of RP-HPLC in the field of drug metabolism and pharmacokinetic analysis.