Human ADME for YH12852 using wavelength scanning cavity ring-down spectroscopy (WS-CRDS) after a low radioactivity dose
BIOANALYSIS(2020)
Abstract
Aim: Human C-14 radiotracer studies provide information-rich data sets that enable informed decision making in clinical drug development. These studies are supported by liquid scintillation counting after conventional-sized C-14 doses (50-200 mu Ci) or complex accelerator mass spectrometry (AMS) after microtracer-sized doses (similar to 0.1-1 mu Ci). Mid-infrared laser-based 'cavity ring-down spectroscopy' (CRDS) is an emerging platform for the sensitive quantitation of C-14 tracers. Results & methodology: We compared the total C-14 concentrations in plasma and urine samples from a microtracer study using both CRDS and AMS technology. The data were evaluated using statistical and pharmacokinetic modeling. Conclusion: The CRDS method closely reproduced the AMS method for total C-14 concentrations. With optimization of the automated sample interface and further testing, it promises to be an accessible, robust system for pivotal microtracer investigations
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Key words
accelerator mass spectrometry,ADME,clinical,CRDS,laser,mass balance,microtracing,pharmacokinetics,tracer
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