Measuring Receptor Occupancy with PET

Author(s): Aren van Waarde.

Journal Name: Current Pharmaceutical Design

Volume 6 , Issue 16 , 2000

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Abstract:

Many physiological and biochemical measurements can be performed noninvasively in humans with modern imaging techniques like magnetic resonance imaging (MRI), positron emission tomography (PET) or single-photon emission computed tomography (SPECT). This review focuses on the monitoring of drugreceptor interactions in patients and healthy volunteers with PET. Such studies depend on the availability of a suitable radioligand; they are already possible for classical and atypical neuroleptics, anxiolytics, antidepressants, anticholinergics, antihistamines, antiepileptics, beta-blockers and hypnotic drugs. In Phase I-II human studies, measurements of plasma pharmacokinetics can be combined with images of receptor occupancy and be quantitatively related to pharmacologic effects which are induced in the same subjects. Optimal dosing schedules can be defined and valuable information for the design of Phase III studies can be acquired. Moreover, the effect of interventions (e.g. change of dose, additional medication) can be predicted. Medical imaging techniques will play an increasing role in clinical pharmacology and allow well-informed go/no-go decisions in future drug development

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Article Details

VOLUME: 6
ISSUE: 16
Year: 2000
Page: [1593 - 1610]
Pages: 18
DOI: 10.2174/1381612003398951
Price: $58

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PDF: 17