title: Bioimaging mass spectrometry of trace elements - recent advance and applications of LA-ICP-MS: A review.
abstract: Bioimaging using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) offers the capability to quantify trace elements and isotopes within tissue sections with a spatial resolution ranging about 10-100 μm. Distribution analysis adds to clarifying basic questions of biomedical research and enables bioaccumulation and bioavailability studies for ecological and toxicological risk assessment in humans, animals and plants. Major application fields of mass spectrometry imaging (MSI) and metallomics have been in brain and cancer research, animal model validation, drug development and plant science. Here we give an overview of latest achievements in methods and applications. Recent improvements in ablation systems, operation and cell design enabled progressively better spatial resolutions down to 1 μm. Meanwhile, a body of research has accumulated covering basic principles of the element architecture in animals and plants that could consistently be reproduced by several laboratories such as the distribution of Fe, Cu, Zn in rodent brain. Several studies investigated the distribution and delivery of metallo-drugs in animals. Hyper-accumulating plants and pollution indicator organisms have been the key topics in environmental science. Increasingly, larger series of samples are analyzed, may it be in the frame of comparisons between intervention and control groups, of time kinetics or of three-dimensional atlas approaches.
authors: Central Institute for Engineering, Electronics and Analytics (ZEA-3), Forschungszentrum Jülich, Jülich D-52425, Germany. Electronic address: s.becker@fz-juelich.de.
authors: J Sabine
authors: JS
authors: Becker
authors: Institute for Neuroscience and Medicine (INM-2), Forschungszentrum Jülich, Jülich D-52425, Germany. Electronic address: a.matusch@fz-juelich.de.
authors: Andreas
authors: A
authors: Matusch
authors: Central Institute for Engineering, Electronics and Analytics (ZEA-3), Forschungszentrum Jülich, Jülich D-52425, Germany. Electronic address: b.wu@fz-juelich.de.
authors: Bei
authors: B
authors: Wu
mesh_terms: D000818:Animals; D006801:Humans; D053685:Laser Therapy / Q000379:methods*; D013058:Mass Spectrometry / Q000379:methods*; D013054:Spectrophotometry, Atomic / Q000379:methods*; D014131:Trace Elements / Q000032:analysis*
chemical_list: D014131:Trace Elements
keywords: Elemental bio-imaging; LA-ICP-MS; Laser ablation inductively coupled plasma mass spectrometry; Trace metal imaging