What Can Be Learned From Crowdsourced Population Asparagus Urinary Odor Kinetics?

Area of Science:

• Pharmacokinetics
• Human Metabolism
• Sensory Science

Background:

• Asparagus consumption is linked to the generation of malodorous urine.
• Previous research characterized interindividual variability in this phenomenon using crowdsourcing.
• Further investigation into the kinetics of urinary odor production is warranted.

Purpose of the Study:

• To characterize urinary odor kinetics following asparagus consumption.
• To develop and refine a kinetic-pharmacodynamic model for asparagus metabolites.
• To compare odor excretion profiles between different study populations.

Main Methods:

• A randomized study involving participants consuming a standardized amount of asparagus.
• Data collection on urine odor perception and timing.
• Analysis using a kinetic-pharmacodynamic model incorporating data from Takeda Pharmaceutical International Company and American Society for Clinical Pharmacology and Therapeutics studies.
• Utilized an improved R-Shiny application for crowdsourcing data acquisition.

Main Results:

• The updated kinetic-pharmacodynamic model identified an absorption process with a half-life of 25 minutes.
• The estimated elimination half-life for the asparagus-induced malodorous urine effect was 7.2 hours.
• This elimination half-life was observed to be 44% longer in the Takeda study cohort compared to previous findings.

Conclusions:

• Population kinetics modeling provides valuable insights into the absorption and elimination of asparagus metabolites responsible for malodorous urine.
• The study refines the understanding of urinary odor kinetics, with implications for personalized nutrition and metabolic studies.
• The R-Shiny app facilitates efficient crowdsourcing for population pharmacokinetic studies in various settings.