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Recent advances in biomedical applications of accelerator mass spectrometry Hah SS; Henderson PT; Turteltaub KWJ Biomed Sci 2009[Jun]; 16 (1): 54The use of radioisotopes has a long history in biomedical science, and the technique of accelerator mass spectrometry (AMS), an extremely sensitive nuclear physics technique for detection of very low-abundant, stable and long-lived isotopes, has now revolutionized high-sensitivity isotope detection in biomedical research, because it allows the direct determination of the amount of isotope in a sample rather than measuring its decay, and thus the quantitative analysis of the fate of the radiolabeled probes under the given conditions. Since AMS was first used in the early 90's for the analysis of biological samples containing enriched 14C for toxicology and cancer research, the biomedical applications of AMS to date range from in vitro to in vivo studies, including the studies of 1) toxicant and drug metabolism, 2) neuroscience, 3) pharmacokinetics, and 4) nutrition and metabolism of endogenous molecules such as vitamins. In addition, a new drug development concept that relies on the ultrasensitivity of AMS, known as human microdosing, is being used to obtain early human metabolism information of candidate drugs. These various aspects of AMS are reviewed and a perspective on future applications of AMS to biomedical research is provided.|8-Hydroxy-2'-Deoxyguanosine[MESH]|Animals[MESH]|Biomedical Research/trends[MESH]|Carbon Radioisotopes/chemistry[MESH]|DNA Damage[MESH]|Deoxyguanosine/analogs & derivatives/pharmacology[MESH]|Equipment Design[MESH]|Humans[MESH]|Mass Spectrometry/*methods[MESH]|Oxidative Stress[MESH]|Particle Accelerators[MESH]|Pharmacokinetics[MESH]|Radioisotopes/pharmacology[MESH] |
